CN111942425A - Wheel set replacing device for 160 km-per-hour power centralized motor train unit - Google Patents

Abstract

The invention relates to a wheelset replacement device for a power-concentrated EMU with a speed of 160km/h. The system is installed in an overhaul space below the ground of an overhaul warehouse, and the overhaul space includes an EMU running line and a wheelset storage line arranged side by side in the longitudinal direction; A movable rail bridge is arranged inside, the front and rear sides of the movable rail bridge are symmetrically arranged with a bogie carriage device, and a rail bridge elevator device is arranged at the bottom of the movable rail bridge; between the moving line and the wheelset storage line, the wheelset is arranged to move out laterally. The traction transmission device is provided with a wheelset storage line lifting device in the wheelset storage line. The invention improves the working efficiency of temporary repair and the utilization rate of equipment, and can combine the original moving wheelset replacement equipment and vehicle wheelset replacement equipment into one device, which saves space and investment, and also fills the domestic market that is not suitable for both high-speed trains and control trains. And the blank of the replacement equipment for the trailer wheel has great economic and social benefits.

Description

Wheelset replacement device for power-concentrated EMUs with a speed of 160km/h

technical field

The invention relates to the technical field of motor vehicle maintenance, in particular to a wheelset replacement device for a power-concentrated motor train set with a speed of 160 km per hour.

Background technique

In order to speed up the modernization of railway equipment, make full use of the maintenance resources of existing lines and locomotives and passenger cars, improve the quality of railway transportation services on existing lines, and meet the requirements of railway transportation and business development, since 2018, China National Railway Group has successively launched in Lanzhou, Kunming, Hangzhou and other railway bureau group companies have launched power-concentrated EMUs with a speed of 160km per hour, and have achieved good social and economic benefits.

Wheelset replacement is one of the technological processes of the temporary repair operation of the power-concentrated EMU with a speed of 160km/h. When the wheel tread is peeled off on the EMU, trailer and control car, the wheelset needs to be replaced. At present, wheelset replacement is more frequent, and the requirements for wheelset replacement equipment are also higher. However, since the 160km/h power-concentrated EMU consists of an EMU, a trailer and a control car, the size and composition of the wheelset are different, and higher requirements are placed on the wheelset replacement device. In order to improve the wheelset replacement efficiency, it is necessary to develop a A wheelset replacement device suitable for all kinds of motor vehicles, trailers and control vehicles.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a wheelset replacement device for a power-concentrated EMU with a speed of 160km/h, so as to realize automatic replacement of the wheelset of the power-concentrated EMU with a speed of 160km/h.

The technical scheme adopted in the present invention is:

The wheelset replacement device for power-concentrated EMUs with a speed of 160km/h is characterized by:

The system is installed in the maintenance space below the ground of the maintenance warehouse, and the maintenance space includes the motor train running line and the wheelset storage line arranged longitudinally side by side;

A movable rail bridge is arranged in the moving line of the motor train, a bogie bracket car device is symmetrically arranged on the front and rear sides of the movable rail bridge, and a rail bridge elevator device is arranged at the bottom of the movable rail bridge;

Between the moving line of the motor vehicle and the wheelset storage line, a traction transmission device for laterally moving out the wheelset is arranged, and a wheelset storage line lifting device is arranged in the wheelset storage line.

Track bridge positioning and locking devices are also arranged on the front and rear sides of the movable track bridge.

The movable track bridge includes support platform, steel rail, traction frame and roller;

The steel rail is arranged above the support table, the bottom of the support table is provided with rollers, and one side is provided with a traction frame.

The bogie carriage device includes a carriage, a No. 1 lead screw lift, a steel transmission chain, a steel frame body and a No. 1 drive motor;

The bracket is located on the top of the No. 1 lead screw lift, the No. 1 lead screw lift is installed on the steel frame body, and the No. 1 lead screw lift is connected to the No. 1 drive motor through a steel transmission chain.

The rail bridge lift device includes a positioning pin, a lifting frame, a linear slider, a No. 2 lead screw lift, a base and a No. 2 drive motor;

The No. 2 lead screw lift is installed on the base and is driven by the No. 2 drive motor; the lifting frame is located on the top of the No. 2 lead screw lift, and has a vertical guide column. The guide column is provided with a linear slider and the top is provided with a positioning pin.

The wheelset laterally moves out of the traction transmission device including traction pin, chain, transmission mechanism, traction motor and track frame;

The traction motor is associated with the transmission mechanism through a chain, and is mounted on the track frame, the traction pin is mounted on the chain, and the traction frame of the movable track bridge is correspondingly provided with pin holes.

The track bridge positioning and locking device includes a support frame, a rack, a gear, a No. 3 drive motor, a telescopic pin and a bearing;

The telescopic pin is located in the support frame, and the bottom is provided with a bearing; the output end of the No. 3 driving motor is connected to the rack through a gear, and the telescopic pin is locked through the braking of the No. 3 driving motor.

The lifting device of the wheelset storage line includes the No. 4 drive motor, the transmission shaft, the No. 3 lead screw elevator, the linear slide rail, the movable track bridge roller running track and the support seat;

The No. 3 lead screw elevator is set on the support base, and the top is provided with a movable track bridge roller running track, and the No. 3 lead screw elevator is connected to the No. 4 drive motor through the transmission shaft;

Linear slide rails are arranged between the two ends of the support base and the wall.

The present invention has the following advantages:

The invention has the advantages of simple structure, obvious effect and reliable system. After using the device, the wheel sets of the 160km/h power-concentrated EMU, the trailer and the control car can be replaced at the same time, which improves the work efficiency and equipment of temporary repair. Utilization rate, the original moving wheelset replacement equipment and vehicle wheelset replacement equipment can be combined into one equipment, which saves space and investment, and also fills the gap in China that is not applicable to the replacement equipment for motor vehicles, control vehicles and trailer wheelsets at the same time. Great economic and social benefits.

Description of drawings

Figure 1 is a schematic front view of a wheelset replacement device.

Figure 2 is a schematic plan view of a wheelset replacement device.

Figure 3 is a longitudinal schematic view of a wheelset replacement device.

Figure 4 is an elevation view of the movable track bridge.

Figure 5 is a plan view of the movable track bridge.

FIG. 6 is an elevation view of the bogie carriage device.

Fig. 7 is a side view of the bogie carriage device.

FIG. 8 is an elevation view of the rail bridge elevator device.

Fig. 9 is a side view of the rail bridge elevator device.

Figure 10 is an elevational view of the wheelset being moved laterally out of the traction drive.

Figure 11 is a plan view of the wheelset being moved laterally out of the traction drive.

Figure 12 is a front view of the track bridge positioning locking device.

Figure 13 is a cross-sectional view of the track bridge positioning locking device.

Figure 14 is an elevation view of the wheelset storage line lifting device.

Figure 15 is a plan view of the wheelset storage line lifting device.

The figure is marked as:

1. Bogie carriage device, 2. Active track bridge, 3. Track bridge elevator device, 4. Track bridge positioning and locking device, 5. Wheelset laterally moving out traction transmission device, 6. Wheelset storage line lifting device;

11. Bracket, 12, No. 1 lead screw lift, 13, Guide rod, 14, Steel transmission chain, 15, Steel frame body, 16, No. 1 drive motor;

21. Support table, 22, Steel rail, 23, Traction frame, 24, Roller;

31, positioning pin, 32, lifting frame, 33, linear slider, 34, No. 2 lead screw lift, 35, base, 36, No. 2 drive motor;

41-support frame, 42-rack, 43-gear, 44, No. 3 drive motor, 45, telescopic pin, 46, bearing,

51, traction pin, 52, chain, 53, transmission mechanism, 54, traction motor, 55, track frame;

61. No. 4 drive motor, 62, drive shaft, 63, No. 3 lead screw lift, 64, linear slide rail, 65, movable track bridge roller running track, 66, support seat.

Detailed ways

The present invention will be described in detail below with reference to specific embodiments.

The invention relates to a wheelset replacement device for a power-concentrated EMU with a speed of 160km/h. The device is installed in the maintenance space below the ground of an inspection warehouse, and is suitable for a power-concentrated EMU with a speed of 160km/h, a trailer and a control vehicle. wheelset replacement. The 160km/h power-concentrated EMU is mainly composed of power cars, trailers and control cars. The maximum operating speed is 160km/h. There are two types of short trains and long trains. The short train consists of 1 EMU + 7 trailers. It consists of +1 control car, and the long group consists of 1 motor car + 16~18 trailers + 1 motor car. The invention can be used for wheelset replacement work where the vehicle's own weight is less than or equal to 70 tons, the wheelbase of the bogie is 2400mm-2900mm, and the wheel diameter is 760mm-915mm.

The maintenance space includes the motor train running line and the wheelset storage line arranged longitudinally side by side; a movable rail bridge 2 is arranged in the motor train driving line, and the front and rear sides of the movable rail bridge 2 are symmetrically arranged with a bogie carriage device 1, and the bottom of the movable rail bridge 2 is arranged. A rail bridge elevator device 3 is provided; between the moving line and the wheelset storage line, a wheelset laterally moving out traction transmission device 5 is provided, and a wheelset storage line lifting device 6 is provided in the wheelset storage line. The track bridge positioning and locking devices 4 are also provided on the front and rear sides of the movable track bridge 2 .

The movable track bridge 2 includes a support table 21, a steel rail 22, a traction frame 23 and a roller 24;

The bogie carriage device 1 includes a carriage 11, a No. 1 lead screw lift 12, a steel transmission chain 14, a steel frame body 15 and a No. 1 drive motor 16; the carriage 11 is located on the top of the No. 1 lead screw lift 12, and the No. The bar lift 12 is mounted on the steel frame body 15 , and the No. 1 lead screw lift 12 is connected to the No. 1 drive motor 16 through a steel transmission chain 14 .

The rail bridge lift device 3 includes a positioning pin 31, a lifting frame 32, a linear slider 33, a No. 2 lead screw lift 34, a base 35 and a No. 2 drive motor 36; the No. 2 lead screw lift 34 is installed on the base 35, and the No. The driving motor 36 is driven; the lifting frame 32 is located on the top of the No. 2 lead screw lift 34, and has a vertical guide column.

The wheelset is moved laterally out of the traction transmission device 5, which includes traction pins 51, chains 52, transmission mechanisms 53, traction motors 54 and track frames 55; 51 is installed on the chain 52, and pin holes are correspondingly provided on the traction frame 23 of the movable track bridge 2.

The track bridge positioning and locking device 4 includes a support frame 41, a rack 42, a gear 43, a No. 3 drive motor 44, a telescopic pin 45 and a bearing 46; the telescopic pin 45 is located in the support frame 41, and the bottom is provided with a bearing 46; No. 3 drive The output end of the motor 44 is connected to the rack 42 through the gear 43 , and the telescopic pin 45 is locked by the braking of the No. 3 driving motor 44 .

The wheelset storage line lifting device 6 includes a No. 4 drive motor 61, a transmission shaft 62, a No. 3 lead screw lift 63, a linear slide 64, a movable track bridge roller running track 65 and a support seat 66; the No. 3 lead screw lift 63 is arranged on the On the support base 66, a movable track bridge roller running track 65 is arranged on the top, and the No. 3 lead screw elevator 63 is connected to the No. 4 drive motor 61 through the transmission shaft 62; the two ends of the support base 66 and the wall are provided with linear slide rails 64.

The structure of the present invention is further described in detail with reference to the accompanying drawings:

The bogie carriage device 1 is used to replace the support of the wheel to the bogie, the bearing capacity of one side is 20 tons, the lifting stroke is 0-500mm, and the lifting speed is 0-12mm/s. It consists of a steel frame body, a bracket, a lift, a guide rod, a transmission chain and a drive motor.

The movable track bridge 2 has a length of 2.2 meters and is composed of a support table, a steel rail, a roller, and a traction frame. The support table is welded by section steel and plate, and the welding stress is removed after welding. The support frame has sufficient strength and stability. In the non-working state, the telescopic pin of the track bridge positioning locking device 4 extends to support the movable track bridge 2, which can allow a 138-ton, three-axle bogie shunting locomotive to pass at a speed of less than 15km/h.

The rail bridge elevator device 3 is composed of a lifting frame, a linear slide rail, two 25-ton lead screw lifts, a base machine and two 5-kilowatt servo drive motors. The lifting frame is welded and formed by square tube, section steel, plate and other materials. Linear sliders are installed on the four guide columns of the lifting frame to ensure the stability of lifting. Two 5kW servo motors drive two 25-ton lead screws to lift and lower respectively. The lift force is 40 tons to meet the requirements of spring pressure and pre-pressure when the wheelset is disassembled. The use of servo motor drive can control the lifting speed to smoothly lift and stop within 0-12mm/s. As a component that drives the lifting gravity, the bar lift can ensure the double safety and self-locking performance of the equipment during the lifting process and prevent the workpiece from falling off during the lifting process.

The track bridge positioning locking device 4 is installed on the fixed track support frames on the front and rear sides of the movable track bridge 2, and the locking pin is driven and retracted by the motor to lock the movable track bridge 2 to ensure the safety and stability of the track when the train passes. Bearing gravity to avoid the lead screw elevator of the elevator device 3 from bearing gravity, it is composed of a bearing seat, a gear, a rack, a telescopic pin and a motor.

The wheelset is moved laterally out of the traction transmission device 5, and the movable rail bridge is pulled from the main track to the wheelset storage line lifting device 6, and the replacement wheelset is moved out of the car body and pulled to the wheelset storage line lifting device to replace the wheelset. The movable rail bridge carrying the replacement is pulled from the storage line lifting device 6 to the main rail. It is composed of traction pin, chain, transmission mechanism, traction motor and track frame. When working, the pin hole on the traction frame on the movable rail bridge 2 falls into the traction pin, and the traction pin is electrically driven by the chain to drive the movable track bridge 2 to the wheelset. on the storage line lifter. The side of the track frame is welded with section steel, and the upper 22Kg light rail is used as the running track of the two rollers of the movable track bridge. The traction motor adopts frequency conversion technology to ensure the stability of starting and stopping during the operation process and the accuracy of positioning. The traction length is 3.6 meters, and the running speed is 0-8.5m/min.

The wheelset storage line lifting device 6 lifts the movable rail bridge 2 carrying the wheelset to the level of the workshop floor, which is convenient for the lifting of the wheelset. The lifting stroke is 1250mm, the maximum lifting force is 5 tons, and the lifting speed is 0-12mm /s, the frequency conversion technology of the lifting motor ensures the stability of starting and stopping when lifting, and the linear slide rails installed on both sides of the wall ensure the stability of operation. process security. The support bracket adopts section steel and plate welding with sufficient strength, and the post-weld stress treatment ensures the stability of the steel frame. The wheelset storage line lifting device is composed of a support frame, a movable track bridge 2 roller running tracks, a linear slide rail, a lead screw lifter, a transmission shaft, and a drive motor.

The concrete operation process of the present invention is:

1. The wheel set to be changed is at the middle track bridge of the moving line of the motor train, and the bogie bolster falls above a certain position of the carriage device at both ends of the track bridge (determine whether the bolster is on the left or right according to the wheel changing position). At this time, the maintenance personnel control the execution device to raise the trolley device, release the track bridge positioning locking device after it is in place, and then raise the middle track bridge (the wheelset decomposition conditions can be satisfied) to manually decompose the wheelset.

2. After the manual disassembly of the wheelset is completed, the maintenance personnel shall control the execution device to move the wheelset to be replaced to the storage line (both the middle rail bridge and the wheelset storage line are lowered to the lowest position, at this time, the wheelset can be moved laterally out of the traction transmission device to remove the wheelset Move the pair to the wheelset storage line. When the wheelset completely enters the wheelset storage line, then raise the wheelset storage line to the ground, and then completely remove the wheelset to be replaced.)

3. After replacing the wheelset, the maintenance personnel will move the replaced wheelset back to the middle rail bridge (the middle rail bridge and the wheelset storage line are both lowered to the lowest position, and then the wheelset can be moved laterally for traction through the wheelset) The transmission device moves the wheelset back to the middle track bridge. When the wheelset completely enters the middle track bridge, the middle track bridge is raised to a certain height [the wheelset assembly conditions can be met], and the wheelset can be assembled online.)

4. After the assembly of the wheelset is completed, the maintenance personnel can restore the equipment to the initial state of entering the vehicle, and the entire wheelset replacement process is completed at this time.

5. According to the design of this equipment, the actuators are all driven by motors. Therefore, the motor control objects of the actuator are as follows: the lifting motor of the bogie carriage device (4), the lifting motor of the middle rail bridge (2), the motor of the positioning and locking device of the track bridge (4), and the frequency conversion motor of the traction device (1). ), storage line lift motor (1), submersible pump motor (1).

The control requirements of each motor are as follows:

(1) Relatively precise position control and synchronous control are required for the lifting and lowering of the bogie trolley device, the lifting of the middle rail bridge, and the moving in and out of the traction device. Therefore, servo drives or frequency conversion speed control are used for these motors. And a closed-loop control system is formed with a rotary encoder to improve the control accuracy.

(2) Conventional contactor control is used for motors such as storage line lifting, positioning and locking devices.

6. Control mode structure: The equipment control mode adopts industrial control computer and programmable logic controller (PLC) to form upper and lower computers for control. Among them, the industrial control computer, as the upper computer, is mainly responsible for data information management and network communication, as well as equipment operation status monitoring. As the lower computer, the PLC is mainly responsible for the action control, logic control and interlocking of the equipment actuator, and at the same time exchanging information with the man-machine interface. This control method makes full use of the powerful data management and network functions of the industrial control computer and the characteristics of providing a good interactive interface, and also makes full use of the powerful logic control function and high reliability of the PLC to ensure the control accuracy and reliability of the control site. sex.

7. Realization of the control system: (1) Control between the upper and lower computers: The upper computer accesses the lower computer by polling, communicates with the lower computer using the HOSTLINK protocol, and exchanges information with the lower computer, mainly transmitting vehicle model, bogie information, Process information and read equipment operating status from the lower computer. (2) Realization of the control structure of the lower computer: PLC and servo driver use MODBUS protocol to carry out 1:N communication and exchange information in real time.

8. Design of interlocking protection: The control system fully considers various situations that may occur in field operations, and has carried out a perfect interlocking and protection design for equipment and operations: (1) Actuator protection: the action of each actuator Proximity switches (most actuators also use rotary encoders) and software protection are used for comprehensive protection to ensure that the actions of the actuators will not exceed the design limits. (2) Operational protection: The work flow of wheelset replacement equipment is divided into several types, and each type of process steps are designed to be optimized. Each process operation needs to be carried out in the sequence of steps and must not be executed across steps. . The control system automatically monitors the execution of each process step, and each step requires the operator to confirm, thus avoiding possible adverse consequences due to misoperation.

The content of the present invention is not limited to those listed in the embodiments, and any equivalent transformations taken by those of ordinary skill in the art to the technical solutions of the present invention by reading the description of the present invention are covered by the claims of the present invention.

Claims (8)

1. A change device for 160km power concentration type EMUs wheel pair at speed per hour, its characterized in that:

the system is arranged in an overhaul space below the ground of an overhaul warehouse, and the overhaul space comprises a bullet train travelling line and a wheel pair storing and releasing line which are longitudinally arranged side by side;

a movable track bridge (2) is arranged in a bullet train travelling line, bogie bracket vehicle devices (1) are symmetrically arranged on the front side and the rear side of the movable track bridge (2), and a track bridge elevator device (3) is arranged at the bottom of the movable track bridge (2);

a wheel pair transverse moving-out traction transmission device (5) is arranged between the motor car driving line and the wheel pair storing and releasing line, and a wheel pair storing and releasing line lifting device (6) is arranged in the wheel pair storing and releasing line.

2. The wheel set replacing device for the power concentrated motor train unit at 160km/h according to claim 1, wherein:

the front side and the rear side of the movable track bridge (2) are also provided with track bridge positioning and locking devices (4).

3. The wheel set replacing device for the power concentrated motor train unit at the speed of 160km per hour of claim 2, wherein:

the movable track bridge (2) comprises a support platform (21), a steel rail (22), a traction frame (23) and a roller (24);

the steel rail (22) is arranged above the support platform (21), the bottom of the support platform (21) is provided with a roller (24), and one side of the support platform is provided with a traction frame (23).

4. The wheel set replacing device for the power concentrated motor train unit at 160km/h according to claim 3, wherein:

the bogie bracket vehicle device (1) comprises a bracket (11), a first lead screw lifter (12), a steel transmission chain (14), a steel frame body (15) and a first driving motor (16);

the bracket (11) is positioned at the top of the first lead screw lifter (12), the first lead screw lifter (12) is installed on the steel frame body (15), and the first lead screw lifter (12) is connected to the first driving motor (16) through the steel transmission chain (14).

5. The wheel set replacing device for the power concentrated motor train unit at 160km/h according to claim 4, wherein:

the track bridge elevator device (3) comprises a positioning pin (31), an elevator frame (32), a linear sliding block (33), a second lead screw elevator (34), a base (35) and a second driving motor (36);

the second lead screw lifter (34) is arranged on the base (35) and is driven by a second driving motor (36); the lifting frame (32) is positioned at the top of the second screw rod lifter (34) and is provided with a vertical guide post, a linear slide block (33) is arranged on the guide post, and a positioning pin (31) is arranged at the top end of the guide post.

6. The wheel set replacing device for the power concentrated motor train unit at 160km/h according to claim 5, wherein:

the wheel pair transverse moving-out traction transmission device (5) comprises a traction pin (51), a chain (52), a transmission mechanism (53), a traction motor (54) and a track frame (55);

the traction motor (54) is connected with the transmission mechanism (53) through a chain (52) and is arranged on the track frame (55), the traction pin (51) is arranged on the chain (52), and a pin hole is correspondingly arranged on the traction frame (23) of the movable track bridge (2).

7. The wheel set replacing device for the power concentrated motor train unit at 160km/h according to claim 6, wherein:

the track bridge positioning and locking device (4) comprises a support frame (41), a rack (42), a gear (43), a third driving motor (44), a telescopic pin (45) and a bearing (46);

the telescopic pin (45) is positioned in the support frame (41), and the bottom of the telescopic pin is provided with a bearing (46); the output end of the third driving motor (44) is connected to the rack (42) through a gear (43), and the telescopic pin (45) is locked through the braking of the third driving motor (44).

8. The wheel set replacing device for the power concentrated motor train unit at 160km/h according to claim 7, wherein:

the wheel set storing and paying-off lifting device (6) comprises a fourth driving motor (61), a transmission shaft (62), a third lead screw lifter (63), a linear slide rail (64), a movable rail bridge roller walking rail (65) and a supporting seat (66);

the third lead screw lifter (63) is arranged on the supporting seat (66), the top of the third lead screw lifter is provided with a movable track bridge roller walking track (65), and the third lead screw lifter (63) is connected to the fourth driving motor (61) through a transmission shaft (62);

a linear slide rail (64) is arranged between the two ends of the supporting seat (66) and the wall body.

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