Passenger car high-position assembly lifting platform

Abstract

The utility model relates to a passenger car high-position assembly lifting platform which comprises a motor, a speed reducer, a chain and a chain wheel and further comprises a stand column, a supporting rod, a motor base, a bearing base and a working table, the motor base is arranged on the supporting rod, a motor is arranged on the motor base, an output shaft of the motor is connected with the speed reducer, and two output ends of the speed reducer are both connected with transmission shafts. The lower portions of the bearing seats are provided with stand columns, the two stand columns are symmetrically arranged along the supporting rods, the two ends of the two transmission shafts are provided with chain wheels, the chain wheels are in meshed connection with a chain, one end of the chain is connected with a balancing weight, and the other end of the chain is connected with one side of the workbench through the chain wheels. The device further comprises a control circuit which is electrically connected with the motor. The stand column and the supporting rod are arranged, the motor and the speed reducer are arranged on the supporting rod to drive the chain wheel and the chain arranged on the stand column to work so as to hoist the workbench, electric lifting of the workbench is achieved in combination with a control circuit, use is convenient, and operation safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of passenger train manufacturing and assembling, in particular to a passenger train high-position assembling lifting platform. BACKGROUND

[0002] The side windows of large passenger trains and the installation positions of air conditioners are about 1-3m from the ground, and a climbing stool needs to be used during operation to enable the staff to complete high-position assembling operation. Since there are multiple side windows on the large passenger train, the climbing stool needs to be moved back and forth during operation, which affects the work efficiency. Moreover, the climbing stool is high, and there is a safety risk in climbing and operating on it. In addition, the existing climbing stool is inconvenient to adjust in height and cannot meet the needs of passenger trains of different heights. SUMMARY

[0003] The utility model discloses a passenger train high-position assembling lifting platform, which is provided with a stand and a support rod, a motor and a speed reducer are arranged on the support rod to drive the sprocket and chain arranged on the stand to work so as to lift the workbench, and the motor lifting of the workbench is realized in combination with the control circuit. The utility model is convenient to use and improves the operation safety.

[0004] To achieve the above-mentioned purpose, the utility model provides a passenger train high-position assembling lifting platform, which comprises a motor, a speed reducer, a chain and a sprocket, and further comprises a stand, a support rod, a motor base, a bearing seat and a workbench. The motor base is fixedly arranged on the top surface of the support rod. The motor base is provided with a motor. The output shaft of the motor is connected with the speed reducer. Both output ends of the speed reducer are connected with transmission shafts. Both transmission shafts are rotatably connected with bearings on the other sides. The outer ring surface of the bearing is fixed with the bearing seat. The lower part of the bearing seat is provided with a stand. Both stands are symmetrically arranged along the support rod. The stand is a hollow rectangular column structure. Both ends of the transmission shafts are provided with sprockets. The sprockets are meshingly connected with chains. One end of the chain is connected with a counterweight. The other end of the chain is connected with one side of the workbench through the sprocket.

[0005] A control cabinet is arranged below the stand. A control circuit is arranged in the control cabinet. The control circuit is electrically connected with the motor. The control circuit comprises a control button and a limit switch. The number of limit switches is two. Both limit switches are separately arranged on the upper end surface and the lower end surface of the workbench.

[0006] Further, a counterweight is arranged in the stand. A steel wire rope safety device is arranged between the counterweight and the workbench. One end of the steel wire rope of the steel wire rope safety device is fixed with the counterweight through a lock. The other end of the steel wire rope is upwardly arranged out of the stand and is fixed with the workbench through a lock.

[0007] The counterweight and the workbench have similar weights, the steel wire rope safety device is arranged to connect the counterweight and the workbench, the workbench operation safety is improved, and a safety accident is avoided after the chain is broken.

[0008] Further, the workbench is in a rectangular frame structure, the bottom surface of the workbench is fixedly provided with a baffle, the side surface of the workbench is provided with a gap, and a movable door is hinged to the gap of the workbench.

[0009] The workbench is provided with a pulley block on the side close to the column, and a track is fixedly connected to the outer side surface of the column corresponding to the pulley block, the track is in an I-shaped structure, and the pulley block is in sliding connection with the track.

[0010] One side of the workbench is provided with a mounting seat, the mounting seat is fixed to the workbench, and a control button is arranged on the mounting seat.

[0011] The workbench is welded by angle steels of ∠50*50 and ∠30*30, the baffle is a δ3mm pattern steel plate, an upper end of the baffle is welded with a φ32*2.5 steel pipe to form a guardrail for protecting the workers, and the height of the guardrail is 1050mm.

[0012] Further, the control circuit further comprises a main circuit and a control loop, the main circuit comprises a circuit breaker, a first contactor and a second contactor, the first contactor and the second contactor are connected to form a forward and reverse circuit, one side of the circuit breaker is connected to a power supply, the other side is connected to the normally open contact of the first contactor and the second contactor, and the other end of the normally open contact of the first contactor and the second contactor is connected to the motor.

[0013] The main circuit realizes the forward and reverse operation of the motor, and the circuit structure is simple and convenient to control.

[0014] Further, the control loop comprises an emergency stop switch, a first intermediate relay and a second intermediate relay, the emergency stop switch is connected to a power supply, and the first intermediate relay and the second intermediate relay are interlocked.

[0015] The coils of the first intermediate relay and the second intermediate relay are connected to the power supply through the control button, and the number of the control buttons is multiple.

[0016] The normally open contact of the first intermediate relay is connected to the coil of the second contactor through the limit switch arranged on the upper end surface of the workbench, and the normally open contact of the second intermediate relay is connected to the coil of the first contactor through the limit switch arranged on the lower end surface of the workbench.

[0017] The control circuit is arranged to control the motor to rotate reversely or forwardly at different positions, so that the workbench is controlled to ascend or descend on the ground or the workbench.

[0018] Further, the control circuit further comprises a time relay and an alarm, the node of a group of normally open contacts of the first intermediate relay and the second intermediate relay is connected with the normally open contact of the time relay, the other group of normally open contacts of the first intermediate relay and the second intermediate relay are connected with the coil of the time relay respectively, and the normally closed contact of the time relay is connected with the alarm to form a loop.

[0019] The alarm is arranged to give a sound and light alarm before the workbench is ascended or descended, so as to give an alarm to the user and the surrounding people, and the safety of the equipment is improved.

[0020] Through the above technical scheme, the utility model has the advantages of:

[0021] 1. The utility model improves the convenience of high assembly operation. The electric control design is adopted, including a motor, a speed reducer, a chain and a chain wheel, two columns and a support rod are further arranged, the motor and the speed reducer are fixedly arranged on the support rod, the speed reducer is a double-output shaft speed reducer, two output ends of the speed reducer are respectively connected with transmission shafts, chain wheels are arranged on the transmission shafts, chains are hingedly connected to the chain wheels, a counterweight is arranged on one side of the chain, and a workbench is arranged on the other side of the chain. When working, the motor rotates forward, the counterweight ascends, and the workbench descends; the motor rotates reversely, the counterweight descends, and a control circuit is arranged, the control circuit comprises a control button, and the control button is convenient to operate,

[0022] 2. The utility model is provided with a control circuit, the control circuit comprises limit switches arranged at the upper end and the lower end of the workbench, the limit switches limit the stroke of the workbench, and the use safety of the workbench is improved. The workbench is driven by electricity, and it is unnecessary to climb and avoid the phenomenon of stepping on nothing, so that the use safety is high. The counterweight reduces the load of the motor and reduces the vibration amplitude of the workbench. The operation safety is improved, the workbench is of a rectangular frame structure, the frame constitutes a guardrail to protect the operator. The workbench spans two columns, and the operation range includes the length of the whole vehicle, so that it is unnecessary to move when in use, and the use safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Fig. 1 is a structural schematic view of a passenger car high assembly lifting platform according to the utility model;

[0024] Figure 2 Fig. 2 is another structural schematic view of the passenger car high assembly lifting platform according to the utility model;

[0025] Figure 3 for Figure 2 Enlarged view of point A;

[0026] Figure 4 for Figure 2 Enlarged view of point B;

[0027] Figure 5 This is one of the circuit diagrams for a high-position assembly lifting platform for a passenger vehicle according to this utility model;

[0028] Figure 6 This is the second circuit diagram of a high-position assembly lifting platform for passenger vehicles according to this utility model.

[0029] Reference numerals in the attached diagram: 1. Motor; 2. Reducer; 3. Chain; 4. Sprocket; 5. Column; 6. Support rod; 7. Motor mount; 8. Bearing mount; 9. Workbench; 10. Drive shaft; 11. Counterweight; 12. Control button; 13. Limit switch; 14. Wire rope safety device; 15. Baffle; 16. Movable door; 17. Pulley block; 18. Track; 19. Mounting base; 20. First intermediate relay; 21. Second intermediate relay; 22. Time relay; 23. Alarm. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0031] Example 1

[0032] like Figures 1-6 As shown, a high-position assembly lifting platform for passenger vehicles includes a motor 1, a reducer 2, a chain 3, and a sprocket 4. It also includes a column 5, a support rod 6, a motor seat 7, a bearing seat 8, and a worktable 9. The motor seat 7 is fixedly mounted on the top surface of the support rod 6. The motor 1 is mounted on the motor seat 7. The output shaft of the motor 1 is connected to the reducer 2. Both output ends of the reducer 2 are connected to a drive shaft 10. The other side of each drive shaft 10 is rotatably connected to a bearing. The outer ring surface of the bearing is fixed to the bearing seat 8. The column 5 is mounted at the lower part of the bearing seat 8. The two columns 5 are symmetrically arranged along the support rod 6. The column 5 is a hollow rectangular column structure. Both ends of each drive shaft 10 are equipped with a sprocket 4. The sprocket 4 meshes with the chain 3. One end of the chain 3 is connected to a counterweight 11, and the other end is connected to one side of the worktable 9 via the sprocket 4.

[0033] A control cabinet is installed below the column 5. The control cabinet contains a control circuit, which is electrically connected to the motor 1. The control circuit includes a control button 12 and a limit switch 13. There are two limit switches 13, which are located on the upper and lower surfaces of the workbench 9.

[0034] The inside of the column 5 is provided with a counterweight 11, and a steel wire rope safety device 14 is arranged between the counterweight 11 and the workbench 9, one end of the steel wire rope of the steel wire rope safety device 14 is fixed with the counterweight 11 through a lock buckle, and the other end is upwardly out of the column 5 and fixed with the workbench 9 through a lock buckle.

[0035] The workbench 9 is in a rectangular frame structure, and a baffle 15 is fixedly arranged on the bottom surface of the workbench 9, and a gap is left on the side surface of the workbench 9, and a movable door 16 is hingedly connected at the gap position of the workbench 9.

[0036] A pulley block 17 is arranged on the side of the workbench 9 close to the column 5, and a track 18 is fixedly connected on the outside of the column 5 corresponding to the pulley block 17, the track 18 is in an I-shaped structure, and the pulley block 17 is in sliding connection with the track 18.

[0037] A mounting seat 19 is arranged on one side of the workbench 9, the mounting seat 19 is fixed with the workbench 9, and a control button 12 is arranged on the mounting seat 19.

[0038] As shown in Figure 5 and 6 , the control circuit further includes a main circuit and a control loop, the main circuit includes a circuit breaker (QF), a first contactor (KM1) and a second contactor (KM2), the first contactor and the second contactor are connected to form a forward and reverse circuit, one side of the circuit breaker is connected with a power supply, the other side is connected with the normally open contact of the first contactor and the second contactor, and the other end of the normally open contact of the first contactor and the second contactor is connected with the motor 1.

[0039] The control loop includes an emergency stop switch (ESA1 and ESA2), a first intermediate relay 20 (KY1) and a second intermediate relay 21 (KY2), the emergency stop switch is connected with a power supply, and the first intermediate relay 20 and the second intermediate relay 21 are interlocked.

[0040] The coil of the first intermediate relay 20 and the coil of the second intermediate relay 21 are connected with the power supply through the control button 12, and the number of the control button 12 is multiple.

[0041] The control button 12 includes a first up button SA1, a first down button SB1, a second up button SA11 and a second down button SB11, the first up button SA1 and the first down button SB1 are arranged in a control cabinet, the second up button SA11 and the second down button SB11 are installed on the mounting seat 19, the second up button SA11 and the second down button SB11 are connected with the circuit in the control cabinet through wires, and the first up button SA1, the first down button SB1, the second up button SA11 and the second down button SB11 are all point touch switches.

[0042] The normally open contact of the first intermediate relay 20 is connected with the coil of the second contactor through the limit switch 13 (SQ1) arranged on the upper end surface of the workbench 9, and the normally open contact of the second intermediate relay 21 is connected with the coil of the first contactor through the limit switch 13 (SQ2) arranged on the lower end surface of the workbench 9.

[0043] The control circuit further comprises a time relay 22 (SJ) and an alarm 23 (DL), the normally open contact of the time relay 22 is connected in front of the node of a group of normally open contacts of the first intermediate relay 20 and the second intermediate relay 21, another group of normally open contacts of the first intermediate relay 20 and the second intermediate relay 21 are respectively connected with the coil of the time relay 22, and the normally closed contact of the time relay 22 is connected with the alarm 23 to form a loop.

[0044] As shown in Figure 5 and 6 Since the principle of controlling the lifting of the workbench 9 through the first lifting button SA1 and the first lowering button SB1 at the control cabinet position is the same as that of controlling the lifting of the workbench 9 through the second lifting button SA11 and the second lowering button SB11 on the workbench 9, hereinafter, the operation on the workbench 9 will be described as an example, and the operation at the control cabinet position will not be described again. During the operation, two devices of the utility model can be arranged symmetrically with the center line of the passenger car in the passenger car high assembly work area according to the needs. The two lifting benches work independently of each other.

[0045] During the operation, the second lifting button SA11 is pressed, at this time, the coil of the first intermediate relay 20 is energized, the normally open contact is closed, and the normally closed contact is disconnected, and then the coil of the second intermediate relay 21 is disconnected, the coil of the time relay 22 is energized, and the contact of the time relay 22 works in delay, at this time, the alarm 23 is energized through the delay normally closed contact of the time relay 22 and one normally open contact of the first intermediate relay 20, the alarm 23 works, and prompts the staff that the workbench 9 is about to start working.

[0046] When the delay time ends, the normally closed contact of the time relay 22 is disconnected, the normally open contact is closed, and the alarm 23 is de-energized. The coil of the second contactor is energized through the normally open contact of the time relay 22, one normally open contact of the first intermediate relay 20, and the limit switch 13 (SQ1), and due to the interlocking connection, the coil of the first contactor is disconnected.

[0047] The coil of the second contactor is energized, its contact is closed, the motor 1 is energized to reverse, the motor 1 drives the sprocket 4 to rotate through the speed reducer 2, the chain 3 is driven to move, the counterweight 11 is lowered, and the workbench 9 is raised. Until the limit switch 13 (SQ1) at the upper end of the workbench 9 is triggered, the coil of the second contactor is disconnected by the limit switch 13 (SQ1), the coil of the second contactor is de-energized, its contact is reset, and the motor 1 is stopped. Or when the workbench 9 reaches the working position, the staff releases the second lifting button SA11, the control circuit is reset, the motor 1 is stopped, the speed reducer 2 is locked, and the workbench 9 is stopped at the working position.

[0048] When the second lifting button SB11 is pressed during the lowering, the coil of the second intermediate relay 21 is energized, its normally open contact is closed, the normally closed contact is disconnected, the coil of the first intermediate relay 20 is disconnected, then the time relay 22 is energized, the alarm 23 is operated, and the staff is prompted that the workbench 9 is about to work. When the delay time ends, the alarm 23 is de-energized, the normally open contact of the time relay 22 is completed to be closed, the coil of the first contactor is energized, the motor 1 is forward rotated, the counterweight 11 is raised, the workbench 9 is lowered, and until the limit switch 13 (SQ2) at the lower end of the workbench 9 is triggered, the coil of the first contactor is de-energized. The motor 1 is stopped, the speed reducer 2 is locked, and the workbench 9 is stopped on the ground. During the period, if the second lifting button SB11 is released, the motor 1 is stopped, and the workbench 9 is at the position when the second lifting button SB11 is released.

[0049] If a fault occurs, the emergency stop switch (ESA1 and ESA2) is pressed, and then the control circuit is instantaneously de-energized and reset. The workbench 9 is stopped at the current position.

[0050] The above-described embodiments are only preferred embodiments of the utility model, and do not limit the implementation range of the utility model, so that equivalent changes or modifications made according to the structure, features and principles described in the utility model patent range should be included in the utility model application patent range.

Claims

1. A passenger car high assembly lift comprising a motor (1), a speed reducer (2), a chain (3) and a sprocket (4), characterized in that, Also include the stand (5), the strut (6), the motor base (7), the bearing seat (8) and the workbench (9), the top surface of the strut (6) fixedly arranged motor base (7), the motor base (7) is provided with motor (1), the output shaft of the motor (1) is connected with speed reducer (2), the two output ends of the speed reducer (2) are all connected with transmission shaft (10), the other side of two transmission shaft (10) is all rotatably connected with bearing, the outer ring surface of bearing is fixed with bearing seat (8), the lower part of bearing seat (8) is provided with stand (5), two stand (5) is symmetrically arranged along strut (6), stand (5) is hollow rectangular column structure, both ends of two transmission shaft (10) are provided with sprocket (4), the sprocket (4) is engaged with chain (3), one end of chain (3) is connected with counterweight (11), the other end is connected with the one side of workbench (9) through sprocket (4); The lower position of stand (5) is provided with control cabinet, the control circuit is provided in control cabinet, the control circuit is electrically connected with motor (1), control circuit includes control button (12) and limit switch (13), the number of limit switch (13) is two, two limit switch (13) is separately arranged on the upper end surface and the lower end surface of workbench (9).

2. A high-level loading lift for a passenger vehicle as defined in claim 1, characterized in that The inside of stand (5) is provided with counterweight (11), the steel wire rope safety device (14) is arranged between counterweight (11) and workbench (9), one end of steel wire rope of steel wire rope safety device (14) is fixed with counterweight (11) through lock catch, the other end is fixed with workbench (9) through lock catch and goes out stand (5) upward.

3. A high-level loading lift for a passenger vehicle as defined in claim 1, wherein, The workbench (9) is rectangular frame structure, the bottom surface of workbench (9) is fixedly provided with baffle (15), the side surface of workbench (9) is left with gap, the gap position of workbench (9) is hinged with movable door (16); The side of workbench (9) close to stand (5) is provided with pulley block (17), corresponding pulley block (17) is fixedly connected with track (18) on the outside of stand (5), the track (18) is I-shaped structure, pulley block (17) is slidably connected with track (18); One side of workbench (9) is provided with mounting seat (19), the mounting seat (19) is fixed with workbench (9), the mounting seat (19) is provided with control button (12).

4. A high-level loading lift for a passenger vehicle as defined in claim 1, wherein, The control circuit further includes main circuit and control loop, the main circuit includes circuit breaker, first contactor and second contactor, the first contactor and second contactor are connected to constitute forward and reverse circuit, one side of circuit breaker is connected with power supply, the other side is connected with the normally open contact of first contactor and second contactor, the other end of normally open contact of first contactor and second contactor is connected with motor (1).

5. A high-level loading lift for a passenger vehicle as defined in claim 4, wherein, The control loop includes emergency stop switch, first intermediate relay (20) and second intermediate relay (21), the emergency stop switch is connected with power supply, the first intermediate relay (20) and second intermediate relay (21) are interlocked connected; The coils of the first intermediate relay (20) and the second intermediate relay (21) are connected to the power supply through the control buttons (12), and the number of the control buttons (12) is plural; The normally open contact of the first intermediate relay (20) is connected to the coil of the second contactor through the limit switch (13) arranged on the upper end surface of the workbench (9), and the normally open contact of the second intermediate relay (21) is connected to the coil of the first contactor through the limit switch (13) arranged on the lower end surface of the workbench (9).

6. A high-level loading lift for a passenger vehicle as defined in claim 5, wherein, The control circuit further comprises a time relay (22) and an alarm (23), the normally open contact of the time relay (22) is connected in front of the node of a group of normally open contacts of the first intermediate relay (20) and the second intermediate relay (21), the other group of normally open contacts of the first intermediate relay (20) and the second intermediate relay (21) are connected to the coil of the time relay (22) respectively, and the normally closed contact of the time relay (22) is connected to the alarm (23) to form a loop.

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