Catalogue. 1.1 Concepts of products Chief use Applicable scope and working conditions...1

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2 Catalogue 1. Part of script 1.1 Concepts of products Chief use Applicable scope and working conditions Specification and exterior structure Transmission structure and working principles Installation and adjustment Test and accept Points for safe operation Examination,protection,maintenance and troubles-shooting Maintenance Easy-damaged parts Tables and documents Table 1~Table Diagrams Diagrams1~Diagrams

3 1. Part of script 1.1 Concepts of product CD1 and MD1 series of wire-rope electric hoist are improved ones on the basis of the original CD and MD. They are widely used and very popular among users because of their characteristics of tight structure, smart body,safety and reliability, common-used parts, well changeable property, strong lifting capacity as well as convenient maintenance. The hoist exist in form of stationary style and crab-style, the former is divided into four style that is A1, A2, A3 and A4 according to the position (up, down, left and right) of the fixed trestle. It can be installed directly on the frame. The latter with movable function can be installed on the track. CD1 model lifts with single speed, and MD1 model not only with dual speed but also with low speed. On such a basics, CD1(CD), MD1(GDS) and WH164 20t, 32t are developed by our technicians. They share the same structure principles and installations ways with the original CD1 and MD1. The following contents all take CD1 and MD1 for example. Our running scope mainly lies in series of electric hoist with 0.25t-32t load and 3m-30m height. In addition, your special needs shall be met and non-standard hoists shall be manufactured. 1.2 Chief use The crab-model installed on many kinds of cranes of suspending from T-steel can lift heavy objects straight or in a curve. The stationary ones installed on fixed trestle can lift object vertically of from different angles. The product are widely used at industry or enterprises, railway, harbors, warehouses and materials sites etc. They are indispensable machinery to improve working conditions and efficiency in manufactory. 1.3 Applicable scope and working conditions The product applies to such an environment as no fire, no explosive danger, no corrosive media and no dirt exist. And the temperature id between 20 degree and 40 degree up zero, the witness is no higher than 85%, the elevation is below 1000m. It is banned to lift metals, poisonous, combustible and explosive objects. The applicable power source is 3- phase alternating current (A.C for short ), 50Hz (60Hz) frequence and (380v-660v) voltage. Their rated load must be reduced by 20% according as their working grade increases by one grade compared to their middle-level working grade. 1.4 Specification and exterior structure Example for Specifications CD1 (MD1) 5 9 D ( A2) Rated load is 5t Lifting height is 9m D for Electric -crab model CD1 with usual speed A2 for stationary model MD1with usual and low speed Specification,technical data and exterior installation dimensions ( see table 4) Diagram of Exterior structure ( Diagram 1-7) 1

4 1.5 Transmission structure and working principles CD1(MD1)---Model electric hoist mainly consist of three parts, the first is lifting mechanism, the second traveling mechanism and the last electric equipment Lifting mechanism In this mechanism, the lifting motor drivers the roller to rotation through the reducer via the coupling, so that the wire -rope reeled on the roller and carry the hook to rise and fall. A claw -shaped coupling instrument is used to connect the motor axis with the input axis of reducers when the lifting height is 6m (H=6m), when H 9m, the intermediate shaft and rigid coupling are added Lifting motor The motor with large tractive force is employed to comply with the frequent direct traveling during course of working discontinuously. CD1-model is equipped with ZD-style single speed motor, and MD1 with ZDS-style double motor. The different between the usual speed and the low speed is 10: Reducers All reducers adopt 3-Level bevel gear. The gear and axes are made of alloy steel or qualified carbon-steel. Power heat treatment is conducted to ensure their reliability and life. Finally, the box -body and box-cover made of cast-iron are both well shake-reducing and sealed tightly Roller The roller is made of cast- iron or seamless steel and transmits power through spline. Its case is made of welded steel plate. This is the core part of the hoist, whose side is connected to traveling mechanism. Its ends are respectively connected with lifting reducer and the motor its button cooperates with book through wire-rope. And on the top-front of the case installed the limiter's guide bar Hook The hook is forged of peculiar steel and connected to its case through cross beam via thrust ball bearing so that the hook can rotate freely. Hooks with 5-ton or less lifting capacity are single-pulley style and the 10-ton double-pulley style Traveling mechanism Electric bogie, traveling motor,traveling reducer together with driven crab compose the traveling mechanism which moves the main body to-and-fro through side plates and roller. Its traveling speed is generally 20m/min, and 30m/min is also selected sometimes. One set of driving devices is employed for 1t-5t, and two sets for 10t or more. Straight wheel tread is designed for those used together with box-girder or H shape steel,and circular are tread for those with l-steel Electrical equipment This mechanism consists of electric control box button switch. limiter and connecting wire etc. The operating voltage is usual 36v, press the button correctly according to the marked direction on the button switch and control the hoist through the on-and-off of the relay in the control box. The illustrations should be used together with the attached motor and circuit diagrams. 1.6 Installation and adjustment Installation Check and preparation before installation a) check and accept according to the packing list after the electric hoist arrives at the installation site. Then examine whether there are damaged or lost components during the course of transportation. 2

5 b) Read carefully the illustrations and other attached documents to understand their structure. c) The traveling bogies current-leading instrument and the hook are always packaged separated with the main body, so reassembly is necessary when installed. d) Clear up the oil stain and rust-proof paint on the tread of the electric bogie. e) Do examiner whether the chock has flaws like crackles or burr before installing the rope key. During installation, the wire - ropes must be put into the rope groove and plug chocks tightly, then install wire rope clips well and inspect their reliability. f) Fill the lifting and traveling reducer with oil according to the illustrations, then seal the oil - hole tightly to stop the oil from leaking. g) Understand the installation spot and prepare the installation facilities Installation The rail frame used for the movement of the electric hoist is selected and designed according to standard GB by users themselves. Adjust the electric and drive bogies with spaces when installing to ensure the space between the wheel edge and rail flange is 3-5mm In according with different hoists, please install the electrical equipments referring to relevant circuit Points for attention to installation a) Elastic buffer should be set at the two ends of the rail in order to make sure that the hoist doesn't deviate from the rail when it reaches the end or to prevent bumping into the body. b) The rail or the connected frame should be equipped with earth-connecting wire as which bare copper wire with the diameter of Ф4-5mm or metal conducting -wire with the section no less than 25mm can serve. c) All power circuit in the electric equipment, and the resistance to ground of the controlling circuit should be no less than 1.5Ω per working voltage Examination and adjustment Check whether all connected parts are firm, whether all the assembly meets the requirement, whether the power source complies with the rules, whether the circuit is right, whether the brakes and limiter devices are reliable and acute, whether the reeled rope around the rope guider are smooth, whether the bogie deviates from the orbit, whether the contact between the wheel tread and the rail is good etc. Correct in time the moment troubles occur. Table 3 lists some methods usually used to deal with troubles Adjustment Adjust the space between the bogie wheel and the rail flange to be in the scope of 3-5mm Adjustment of the running distance for the main motor axis The braking effect is the best when the running distance of the main conic motor axis is 1.5mm. Adjustment is necessary when the electric hoist slides too far with rated load. Adjust as follow: a) adjustment of the motor on the hoist below 5t : take off the rear cover,loosen the four bolts fixing regulation nuts. Spin the regulation nuts clockwise to the limited position, then spin counterclockwise one circle, and finally tighten the bolts. b) Adjustment of the motor on the 10t hoist :the sequence is the same with a)expect the spinning direction. That is to say, clockwise spinning increase the running distance and the counterclockwise decreases it Adjustment to the power -cut limiter 3

6 The process of adjustment is realized through regulating the two bumping blocks on the position-limiting bars. The methods are as follows :loosen their their bolts, and the blocks lie on different sides of the rope guide so that blocking board can push the block freely. When the lifting motor starts, the board pushes the top block to move till the space between the case top edge of the hook pulley and the shell bottom edge of the roller is in the scope of 150mm-50mm. At the moment, stop and make the top block approach the blocking board. Finally, tighten the bolts. The adjustment to the bottom limit position is as the above expect the opposite direction 3 or more circle of wire rope should be left on the roller when the hook falls to the lowest point. After the adjustment,try to lift for several times to verify whether the top-and -bottom limited positions meet relevant requirement. 1.7 Test and accept Test with no load Press relevant buttons and check whether the movement of all mechanisms complies with the marked sign on the button. If right,try again for two cycles continuously Raise or lower the hook to the limited positions and check whether the position limiter is reliable Click the button and confirm the running distance of the motor axis which should be in the range of 1-2mm. It is not until there is no abnormal phenomenon occurring in the no-load test that the loading test can be conducted. The latter is carried out in two forms of static test and dynamic test. Examine whether there is unusual phenomenon Static test With rated voltage, add load gradually to 1.25times the rated load. Lift to position mm from the ground and stay for on less than 10min, unload and check with eyes whether there are abnormal phenomena like crackles or permanent distortion to all parts. If not, to be qualified Dynamic test With rated voltage, carry out dynamic test with 1.1times the rated load. The total test cycle is 30 seconds; that is 6 seconds to rise, 9 seconds to stop, 6 seconds to fall, another 9 seconds to stop. The test should last for 15 cycles. Then, see whether there are abnormal phenomena on every part. If not any, confirm to be qualified The braking motor should be adjusted to such an extent as the heavy objects can stop in the air. When stop during the course of falling with rated load, the sliding distance S Vup/100mm (Vup short for lifting speed with rated load) etc. 1.8 Points for safe operation Qualified operator Healthy and have a knowledge of machine and electrical operation Familiar to electric hoist's structure, performance, safety rules and such illustrations etc Work with training credentials Operation should be stopped under one of the following conditions Overloading or nor clear about the objects' weight, lift buried objects and pull slantingly There are defects or injuries which shall influence safe work, for example, the brakes or 4

7 position-limiter doesn't work, the nuts of the hook are damaged, the wear and tear of the steel-rope reaches the scrap standard and so on Possible sliding as result of loose binding or disequilibrium. Or there is no pad between edges of heavy objects and the wire-ropes Too dark at the spot to see clearly loaded objects Do not stop in the air for a long time Operating rules Each shift should conduct day-to-day examination according to Table Do not stop via position-limiter or adjust brakes while lifting heavy objects, carry out examination or maintenance As the heavy objects approach or reach rated load. Do try for a short distance and lift with the lowest height. Make sure there is nobody below when lifting objects or more-circle wire-rope must be left on the roller on safety grounds when the hook is at the lowest working position for the electric hoist without falling limiter Do not remove and revise the safety devices on the electric hoist Stop Check Eliminate troubles Restart, such a procedure should be obeyed when there is abnormal noise during the operation Requirements for users (See clause in standard ZBJ ) Electric hoists must be manufactured in specialized factories with manufacturing license Necessary rules and regulations for safe operation must be erected by users for special requirements of the user, necessary reset must be approves by the manufacturer and relevant labor protection authority Users should build files of their electric hoists. The following contents should be included, technical manufacturing documents of hoists, installation spot and starting time, records of installation and examination, records of daily use, maintenance and protection etc., accident records of equipment or persons, problems and appraisal to equipments. 1.9 Examination, maintenance and troubles-shooting. Trial examination to newly-installed, large-scale repaired hoists or electric hoists lying idle for one or more years should be conducted according to relevant installation rules. Three ways are as follows: Daily check: Table 7 lists examination items and requirements Monthly check: The examination cycle depends on the importance of every part to safe rotation, use frequency as well as property of easy damage or not. Accordingly, the examination is divided into three grades: First level is to check once a month, second level is once every three months and third level is once every six months. See table 8 for monthly check projects, requirements and grades Annual examination: full safe examination to usual electric hoist should be conducted once a year. Table 9 lists annual check projects and requirement Maintenance Regular lubrication and maintenance to the hoists should be carried out to ensure its reliability and life. Diagram 10 shows the lubrication parts and Table 6 and 8 lists lubrication norms Use, protection and scrap of steel-ropes Wire-ropes which can directly affect safe operation of hoists are the key parts of lifting 5

8 mechanism. They usually are scraped because of wear and tear, therefore, they should be always kept lubricative and examined at intervals. The wire-rope should be rejected when it meets article 2.5 in standard GB Practical norms of examination and rejection for wire rope of hoisting machinery or one of the following phenomena occurs. Then, broken ropes should be changed for new one in time. a) Densely broken wire or a ply of wire is snapped. b) The wear and tear or corrosion of the diameter of wire-rope reaches 7% the metric diameter even though there is no obvious broken phenomenon. c) The cutting amount per spill reaches the sum in table 1 and Maintenance Immediate maintenance, adjustments or part changes should be conducted to those which disagree with the requirements during daily, monthly and annual examination. a)the alternative components should have the same performance with original materials. b)when welding is needed, employed materials and welding quality should comply with the quality standard of original components. c)no maintenance while the electric hoists are working Easy-damaged parts Rope guide, scaled ring, braking ring and small high-speed gear of the traveling motor etc, are all easy to be damaged. 6

9 2.Tables and documents Table 1 wire rope rejection standards (within one ply) Rejection's standards for wire-rope 6 19= =222 Safety multiple of wire rope Cross ply Paralyzing ply Cross ply Paralyzing ply *The cross ply of 6 37 is widely selected for the hoist. The steel-wire should be rejected when the broken wire within one ply reaches 22. When even wear or corrosion is found on the external layer of the wire at any section of the steel-wire, the rejection standards should be decreased as stated in Table 2. Table 2 Convert the wire diameter abrasion into broken pieces Wear or corrosion proportion of exterior steel-wire(%) Equivalent proportion of broken wires within one ply in table(%)

10 Table 3 Usual troubles and regulations (See next page) Trouble Chief reasons Method to cope 1.after starting up, the motor doesn't work or can't lift heavy objects (1)extreme overload (2)the voltage is 10% or more lower than the rated voltage (3)troubles with electric devices like cut circuit or bad connections (4)the brake wheel can't disengage because of the rust and corrosion between brake wheel and rear end cover No overload is allowed Wait for the voltage to recover to norm Check and repair electric devices and circuits Remove the brake wheel and clean the rust or corrosive surface 2.Unreliable brake or the slide-down distance exceeds the specifications 3.too high is the rise temperature (5)rub between the conic rotor and stator (1)the spring pressure is reduced due to the wear of the brake ring or other causes (2)bad connection between brake ring and conic surface of rear end cover (3)greasy dirt on braking surface (4)loosening of brake ring (5)fatigue of pressure ring (6)ineffective shift or stick of the coupling instrument (1)overloading (2)working exceedingly frequency (3)insufficient space of the brake which means an additional load so that the brake ring can't disengage itself completely when rotating Refer to serial No.9. Adjust according to Remove to repair and grind Remove to clean Replace it Replace the spring Check the connection parts Not allowed According to FC30% working system Readjust the space 8

11 Troubles Chief reasons Methods to cope (1)bad lubrication 4.too noisy is the reducer (2)excessive wear,too wide space between gears (3)damage of gears Remove to check and repair 5.the motor hums when starting up 6.Impossible restart after the stopping as the heavy object is on half way 7.the hoist can not stop after starting or when it reaches the limited position 8.the reducer leaks oil 9.rub between the conical rotor and stator due to insufficient spare (4)damage of bearings (1)power and motor lack phase (2)bad connection of AC contactor The voltage is too low or fluctuation is too fierce (1)burning up of points of A.C. contactor (2)position-limiter does not work (1)bad assembly or damage of the sealing ring between the body and cover (2)connecting screws are not tightened No rub is allowed dispatched products.the trouble is mainly caused by:serious wear of the bearing rings on the motor shaf,axial displacement of the rotor or the stator. Maintain or replace the contactor Do not start until the voltage recovers to norm Cut off the general power and remove it to repair or alternate the contactor Remove to repair or replace the sealing ring Tighten the screws Remove and replace the bearing ring to make the space between conic surface of the rotor and that of the stator in the scope of mm(narrower for smaller motor) or send it back to the manufacturer for repair. 9

12 lifting height lifting speed Model Table 4 Chief data of technical perormance and exterior dimensions m m/min CD,MD lifting capacity t (8/0.8) 8(8/0.8) 8(8/0.8) 8(8/0.8) 8(8/0.8) traveling speed m/min 20(30) 20(30) 20(30) 20(30) 20(30) diameter of mm diameter rope of wire-rope mm wire structure form 6*19 D-6*19+1 D-6*37+1 D-6*37+1 D-6*37+1 type of I-steel rail (GB706-88) 16-22b 16-28b 16-28b 20a-32c 20a-32c minimum radius of ring shaped rail m lifting motor capacity type rotating speed power ZD ZD ZDS 1 0.2/0.8 ZD ZDS 1 0.2/1.5 ZD ZDS 1 0.4/3 ZD ZDS 1 0.4/4.5 3P(380V-660V) 50Hz.60Hz type Dw5024 ZDY ZDY ZDY ZDY traveling capacity kw motor rotating r/min speed power 3P(380V-660V) 50Hz.60Hz working grade & structure grade middle-level middle-level middle-level middle-level middle-level H E L L1 Basic dimensions ±2% Total ± 15% L kw / / / /4.5 r/min CD MD mm m 104 n b ф B F 355/ / / /642 CD MD Fixed CD kg Fixed MD

13 Model lifting capacity t lifting height m lifting speed traveling speed m/min m/min 8(8/0.8) 20(30) 7(7/0.7) 20(30) 3.5(3.5/0.35) (3.3/0.33) diameter of rope mm wire-rope diameter of wire mm structure form D-6*37+1 D-6*37+1 D-6*37+1 D-6*37+1 D-6*37+1 type of I-steel rail(gb706-88) 25a-45c 32b-63c 50c-63c 63 and over - minimum radius of ring shaped rail CD,MD m type ZD ZDS 1 0.8/7.5 ZD ZDS 1 1.5/13 D ZDS 1 1.5/ ZD ZDS 1 3.0/18. ZD lifting motor capacity rotating speed kw r/min / / /13 3.0/ power 3P(380V-660V)50hz.60Hz type ZDY ZDY ZDY ZDY capacity rotating speed kw r/min * * * power 3P(380V-660V)50hz.60Hz working grade & structure grade middle-lever middle-lever light-lever light-lever middle-lever H E L L Basic dimensions ±2% L m CD MD n h ф B F 472/ CD Total ±15% MD kg Fixed CD Fixed MD

14 Table5 I-steel No. and amount (P)of adjusted washer 0.25 Specificatio t n of I-steel GB m 6-9 m 0.5-1t 2-3t 5t 10t 16t over 6-9 over 6-9 over m m 12m m 12m 0m 8m Remarks a b a b a b a b a b c a b c a b c a b c a 14 50b c a b c a b c the space between wheel edge and I-steel edge is 3-5mm. 2.the thickness of 0.25ton-washer is 2mm. 3. the thickness of ton-washer is 3mm. 4.refer to factors of punched nail knot for the sum of washer of 1-5t,12m as well as 10-16t with punched nail. 5.data in this table are just for reference. The needed quantity of washers listed above is for single-side of one bolt. 12

15 Table 6 lubrication oil capacit of lifting and traveling reducer with different weight Lifting capacity(t) Lifting reducer(t) Traveling reducer(g) _ Table 7 Items and requirements for daily examination Items Working spot Traveling rail Requirements No obstacles in the way of the operator No unusual phenomena on the rail seen from the ground Button(pendant switch) Movements of rising, falling or to the left or right should be acute and accurate; the electric hoist should be not move when pressing a group of buttons at the same time. Limiter Hook device Wire rope Limited position should be accurately reliable when empty hook ascends to be the limited position. The hook should rotate flexibly in the range of 360 circumference and 180 vertical. No bump occurs when the pulley is rotating. No abnormal phenomena on the loosening device of the hook nuts. And the locking instrument at the mouth of the hook is normal. Observe every day in the light of article in GB5927 Brake Brakes to rise, fall and travel should be flexible and reliable. Rope guide and other safety devices Work normally, safely and reliable 13

16 Table 8 items,requirements and grades for monthly examination Items Requirements Grade Obstacles in the traveling scope The minimum space between the traveling scope and buildings or other devices should be no less than 100mm Ⅰ Travel ing rail(tsteel) Stop-gear at the end of the rail and the connecting screws or welding chink Coupling screw to fix rails Welding chink at the rail connected points No warping or damage is allowed to the stop-gear.coupling screw is not allowed to loosen and apply welding connection.slight crackle is forbidden No loosening is allowed to screws Defects like slight crackle are not allowed Ⅰ Ⅲ Ⅲ Wear and tear of the rail Partial unusual warping and wear-tear are not allowed between the rail and wheel tread as well as the contacted points at the wheel edge. Ⅲ Blocks Unusual wear and tear is banned on the block groove.keep the wheel edge intact. Ⅰ Hook device Appearance Injury is not allowed to block cover.do not loosen the axis-blocking board and finally the lock instrument at the mouth of the hook should work normally. Ⅰ Working state The block should rotate smoothly and flexibly Ⅲ Balanc ing blocks Appearance Fits should be connected solidly and no damage is allowed on the rotating blocks Wall board Coupling screws are not allowed to loosen Ⅲ Wheel Unusual wear and tear together with bruises is not allowed between the tread and wheel edge Ⅲ Ⅲ 14

17 Items Requirements Grade Fixed condition at the end Every end should remain reliable,not unusual phenomenon is allowed Ι Wire-rope Appearance There should be lubrication oil on the rope and any defects like knots,burning obvious loosening or corrosion are all forbidden. Ι Safe degree of application Execute the rules of article 2.5.1~ in GB5972. Ι Gears Lubrication condition Open -style/closed -style gear's surface should be brushed with oil/mechanical oil at intervals Π Appearance Any drawbacks like exterior injury,unusual wrench or ageing and so on are all prohibited. Π Cables Assembly conditions Any loosening situation is banded both to the connection of cable with switch and supporting wire.middle-wire ring should not deviate from the rail. Ш Electric collector Working condition Electric collecting block should rotate flexibly without obvious wear and tear. Π Appearance The linking screws and insulation body should remain light,and the spring should keep highly springy. Ш 15

18 Table 9 items and requirements for annual examination Items Requirements Clearance degree of the tread No attached oil dirt or amount of dirt. Leaning degree No larger than 1/1000 Traveling rail Wheel Jointed points Worn condition Wheel edge Tread Appearance No slight crackles are allowed between welding chink and rail.the deviation amount of top-bottom and two sides should be no larger than 1 Worn tread proportions should be no larger than 10% the original dimension.and the worn width proportion should be no more than 5% the original dimension. The worn wheel edge thickness should be no more than 50% the original thickness and the total space between the wheel edge and rail side should be smaller than 50% the width of the wheel surface The worn diameter of tread should be smaller than 5% the origin. The diameter difference should be smaller than 1% the metric diameter,and the spherical difference should be smaller than 0.8 No slight crackles and damages. Gears Brakes Wire rope Wear and tear of lifting mechanism gears Repeat examining according to monthly requirements. Repeat examining according to monthly requirements. The permitted worn proportion should be smaller than 20% except the first-level gear whose wear proportion should be smaller than 15% the origin. 16

19 Items Gears Wear and tear of traveling mechanism gears Examination of defects on the tooth surface Requirements The permitted worn proportion should be smaller than 25% except the first-level gear whose wear proportion should be smaller than 15% the origin. The open-style gear should be smaller than 30%. Slight crackles or broken teeth are forbidden on the tooth. Damage degree on the tooth-surface should be no larger than 30% the mating surface and the depth should be no thick than 10% the origin. Hook Appearance Wear and tear of dangerous surface Mouth open degree There should be no slight crackles on the surface.elastic warp is not allowed to dangerous surface, screw lines or the neck. Do not weld any defects. No more than 5% the original dimension. No more than 5% the original dimension. Twisted warp No more than 10 Blocks Uneven wear of the block groove should be smaller than 3mm.Wear of the groove wall should be smaller than 20% the origin and the worn bottom proportion should be smaller than 25% the diameter of the wire-rope,there should be no defects which shall damage the wire-rope. Axes Wear of the gear axis Wear of other axes The worn proportion should be no more than 1% the original axial neck. The worn proportion should be no more than 2% the original axial neck. Rollers No slight crackles. And the worn proportion should be no more than 10% the original thickness 17

20 Items Key Spline Requirements Any loosening distortion and unusual wear are all banned to the connection between the key and key slot. Unusual wear or warp should not occur. Rolling bearing There should be no damage or slight crackles Oil-sealing device There should be no slight crackles on the matching surface. Cables Electric collector switch Repeat examining in accordance with requirements for monthly check. Repeat examining in accordance wit h requirements for monthly check. Resistance to ground of the circuit No lower than 1.5M Ω Resistance between usual electric body and screws to ground No more than 0.1 Ω 18

21 3. Part of fiagrams 1. reducer 2. roller 3.lifting motor 4.electric bogie 5.conic brake 6.adjusting nut 7.rope guide 8.coupling 9.hook 10.controlling button 11.hollow axis 12.box-body 13.sealed circle gear gear axis gear 17.04gear axis 18.ball bearing 19.rolling-neddle 20.box-cover 21.acration cover Fig.1 Mechanic transmitting structure of CD 1 -type electric hoist 19

22 1.reducer of lifting mechanism 2. roller 3.lifting motor 4. brake adjustor 5.electric button 6.electric bogie 7.hook 9.reducer of traveling mechanism 10.traveling motor 11.cabel-leading instument Fig.2 exterior structure of CD 1 -type electric hoist (0.25t,3m~12m) 1. reducer of lifting mechanism 2.roller 3.lifting motor 4.brake adjustor 5.electric instrument 6.electric bogie 7.hook 8.button switch 9.reducer of traveling mechanism 10.traveling motor 11.soft-cable current-introducing instrument Fig.3 exterior structure of CD 1 -type electric hoist (0.5~5t,6m~9m) 20

23 1.reducer of lifting mechanism 2.roller 3.lifting motor 4.brake adjustor 5.electric instrument 6.electric bogie 7.hook 8.button switch 9.reducer of traveling mechanism 10.traveling motor 11.soft-cable current-introducing instrument 12.driven bogie Fig.4 exterior structure of CD 1 -type electric hoist (0.5~5t,12m~30m) 1.reducer of lifting mechanism 2.roller 3.lifting motor 4.brake adjustor 5.electric instrument 6.electric bogie 7.hook 8.button switch 9.reducer of traveling mechanism 10.traveling motor 11.soft-cable current-introducing instrument Fig.5 exterior structure of CD 1 -type electric hoist (10t,9m~30m) 21

24 1.reducer of lifting mechanism 2.roller 3.electric bogie 4.soft-cable current-introducing instrument 5.electric instrument 6.lifting motor 7.hook 8.button switch 9.reducer of traveling mechanism 10.traveling motor Fig.6 exterior structure of CD 1 -type electric hoist (16t,9m~18m) 1.reducer of lifting mechanism 2.roller 3.rope wedge 4.lifting motor 5.hook 6.fixed block 7.electric instrument 8.soft-cable current-introducing instrument 9.electric bogie 10.reducer of traveling mechanism 11.traveling motor 12.button switch Fig.7 exterior structure of CD 1 -type electric hoist (20t,32t,6m~16m) 22

25 Fig.8 Sketch map for electric hoist with rope reeling system Fig.9 Sketch for the arrangement of fixed hoist's foundation 23

26 No. Name of parts Lubrication method Name of lubrication oil Period 1 Reducer of lifting mechanism Inject from top hole Gear oil N100 or mechanical oil Hj-50 Once every three months 2 Reduce of traveling mechanism Inject from top hole Calcium-based lubrication oil ZG-3 Once every three months 3 Steel-rope and roller solt Daub the surface Steel-rope oil Once every fifteen days 4 Hook-pulling bearing and block bearing Daub the surface Calcium-based lubrication oil ZG-3 Once every six months 5 Walking-wheel bearing Daub the surface Calcium-based lubrication oil ZG-3 Once every six months 6 Roller bearing Daub the surface Calcium-based lubrication oil ZG-3 Once every six months 7 Bearing of lifting&traveling motor Squeeze in Calcium-based lubrication oil ZG-3 Once every six months 8 Slow-speed box-body Squeeze in Calcium-based lubrication oil ZG-3 Once every six months Fig.10 Lubrication sketch for CD1,MD1 type hoists 24

27 S1 Button-box T1 Transformer F30 Circuit breaker S95 Limit switch S1-1~S1-6 Button M2 Travelling motor K0-K4 A.C. contactor S1-0 Emergency switch M1 Rising-falling motor Code Name Code Name Code Name Fig.11 principle map of 36V controlling circuit for CD1-type electric hoist (0.5~5t) 25

28 S1 Button-box T1 Transformer F30 Circuit breaker S95 Limit switch S1-1~S1-6 Button M3 Travelling motor K0-K6 A.C.contactor S1-0 Emergency switch M1 M2 Rising-falling motor Code Name Code Name Code Name Fig.12 principle map of 36V controlling circuit for CD1-type electric hoist (0.5~5t) 26

29 S1 Button-box T1 Transformer F30 Circuit breaker S95 Limit switch S1-1~S1-6 Button M2 M3 Travelling motor K0-K4 A.C.contactor S1-0 Emergency switch M1 Rising-falling motor Code Name Code Name Code Name Fig.13 principle map of 36V controlling circuit for CD1-type electric hoist (10~32t) 27

30 S1 Button-box T1 Transformer F30 Circuit breaker S95 Limit switch S1-1~S1-8 Button M3 M4 Travelling motor K0-K6 A.C.contactor S1-0 Emergency switch M1 M2 Rising-falling motor Code Name Code Name Code Name Fig.14 principle map of 36V controlling circuit for MD1-type electric hoist (10~32t) 28

31