Operation vehicle for overhauling in tunnel and construction method of operation vehicle

Abstract

The invention aims to provide an operation vehicle for overhauling in a tunnel and a construction method thereof, and belongs to the technical field of railway overhauling. The operation vehicle comprises a track operation vehicle, a transverse moving auxiliary vehicle, a lifting overhauling mechanism and a turnover assembly; the rail operation vehicle comprises an operation vehicle body, a first motor and connecting lug plates are arranged on the top face of the operation vehicle body, a first ball screw sliding block pair is installed at the output end of the first motor, the connecting lug plates are located on the two sides of the first motor, butt joint male plates are arranged at the two ends of the other side of the operation vehicle body, and first sliding grooves are formed in the two ends of the top face of the operation vehicle body. The lower portion of the operation vehicle body is connected with rail wheels through lifting oil cylinders, a second motor is arranged above the rail wheels, the output end of the second motor is connected with a reduction gear box, and the output end of the reduction gear box is connected with the rail wheels. By using the device, the construction time for the rail operation vehicle to leave the rail area can be controlled to be about 5 minutes, and the utilization rate of the window overhauling period is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of railway maintenance technology, specifically relating to a work vehicle for maintenance inside tunnels and its construction method. Background Technology

[0002] Railway maintenance typically utilizes track-mounted maintenance vehicles. These vehicles perform maintenance on railway equipment during "maintenance windows," which are pre-arranged and defined periods in the train timetable. These windows are used for construction, repair, and inspection of equipment such as tracks, bridges, signals, and overhead contact lines, and are not marked with train tracks (or have their operating modes adjusted). The core objective is to provide the necessary working conditions for equipment maintenance while ensuring absolute train safety, thereby achieving a balance between transportation and maintenance and ensuring the long-term reliable operation of the railway.

[0003] Maintenance downtime is extremely valuable, especially on busy main lines where it is very short and needs to be used efficiently. The aforementioned problems are particularly pronounced when encountering tunnels, where insufficient downtime often necessitates moving track equipment out of the tunnel before maintenance is completed, only to move it back in during the next downtime. This situation severely impacts maintenance efficiency. Summary of the Invention

[0004] This invention addresses the problem of low efficiency in railway maintenance operations within tunnels by providing a maintenance vehicle and its construction method for tunnel maintenance.

[0005] The present invention adopts the following technical solution: A maintenance vehicle for tunnels includes a rail maintenance vehicle, a lateral auxiliary vehicle, a lifting maintenance mechanism, and a tilting assembly. The rail-mounted work vehicle includes a work vehicle body. The top surface of the work vehicle body is equipped with a motor and two connecting lugs. A ball screw slider assembly is installed at the output end of the motor. The connecting lugs are located on both sides of the motor. The other side of the work vehicle body has perforated male plates at both ends. The top surface of the work vehicle body has sliding grooves at both ends, with the end of the sliding groove near the male plate open. A rail wheel is connected to the bottom of the work vehicle body via a lifting cylinder. A second motor is located above the rail wheel. The output end of the second motor is connected to a reduction gearbox, and the output end of the reduction gearbox is connected to the rail wheel.

[0006] Furthermore, the lateral movement auxiliary vehicle includes an auxiliary vehicle body. A motor three is mounted on the top surface of the auxiliary vehicle body. A ball screw slider pair two is installed at the output end of the motor three. Slide grooves two are provided on both sides of the ball screw slider pair two. A perforated docking female plate is provided on one side of the auxiliary vehicle body. The docking female plate is connected to the docking male plate of the working vehicle body via a pin. The end of the slide groove two near the docking female plate is open. A road wheel is located below the auxiliary vehicle body. A motor four is located above the road wheel. A reduction gearbox is connected to the output end of the motor four. The output end of the reduction gearbox is connected to the road wheel.

[0007] Furthermore, the lifting and maintenance mechanism includes a storage box and a maintenance operation platform box, which are connected by a scissor mechanism. A through groove is provided at the bottom center of the storage box, which matches the first and second ball screw slider pairs. Traveling wheels are symmetrically provided on both sides of the through groove.

[0008] Furthermore, the number of walking wheels on each side is at least three. The walking wheels are a set of carrying pole wheels. Each walking wheel includes a wheel frame, and wheel seats are symmetrically provided on both sides of the wheel frame. The wheel seats are rotatably engaged with the wheel frame. Two rollers are installed on the wheel seats, and the wheel frame is located between the two rollers. Side wheels are installed on the outer side of the wheel seats.

[0009] Furthermore, the tilting assembly includes two winches and a column located on the auxiliary vehicle body. The winches are located on the side closer to the third motor, and the column is located on the side farther away from the third motor. A pulley is installed at the top of the column, and a steel wire rope is wound on the winches. The other end of the steel wire rope passes around the pulley and is connected to the connecting ear plate on the top surface of the working vehicle body.

[0010] Furthermore, the open end of the first chute is provided with a chamfer or rounded corner.

[0011] Furthermore, the open end of the second chute is provided with a chamfer or rounded corner.

[0012] A construction method for a work vehicle used for maintenance inside tunnels includes the following steps: S1. A platform is built on one side of the track. The scissor mechanism descends and is stored in the storage box. The track work vehicle moves to one side of the platform. The lateral auxiliary vehicle is set on the platform. The slider on the ball screw slider pair is connected to the lifting and maintenance mechanism. The traveling wheel is located in the slide groove. S2. The lateral auxiliary vehicle moves toward the rail work vehicle, and the lifting cylinder is adjusted synchronously until the male and female plates are aligned and connected by pins. S3. Motor 1 drives ball screw slider pair 1, which drives the lifting and maintenance mechanism to move laterally toward the lateral auxiliary vehicle until the storage box is connected to the slider on ball screw slider pair 2, separating the slider on ball screw slider pair 1 from the lifting and maintenance mechanism. Then, motor 3 drives ball screw slider pair 2 to move the lifting and maintenance mechanism completely onto the lateral auxiliary vehicle. S4. The wire rope pulled out by the winch passes over the pulley and connects to the connecting ear plate; S5. The winch starts, the wire rope is tensioned, and then the lifting cylinder retracts, causing the track wheel to disengage from the track. S6. The winch continues to rotate, causing the rail work vehicle to rotate 30-45° around the pin, and the lateral auxiliary vehicle moves backward synchronously, thus causing the rail work vehicle to leave the rail area.

[0013] The beneficial effects of this invention are as follows: 1. By using this device, the construction time for the railcar to leave the track area can be controlled to about 5 minutes, which greatly improves the utilization rate of the maintenance window.

[0014] 2. Currently, it takes more than 60 minutes (including 10-20 minutes for safety confirmation) for a work vehicle to leave the tunnel and avoid a train. The device can reduce this time to less than 30 minutes. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of a rail-operated vehicle; Figure 2 This is a structural schematic diagram of the lateral movement auxiliary vehicle; Figure 3 This is a structural diagram of the lifting and maintenance mechanism; Figure 4 This is a schematic diagram of the structure of the spreader pole wheel assembly; Figure 5 This is a schematic diagram showing the connection between the lifting and maintenance mechanism and the rail work vehicle. Figure 6 A schematic diagram showing the overall connection of the rail work vehicle, the lateral auxiliary vehicle, the lifting and maintenance mechanism, and the tilting assembly; Figure 7 This is a schematic diagram of the construction method of the present invention. Figure 1 ; Figure 8 This is a schematic diagram of the construction method of the present invention. Figure 2 ; Figure 9 This is a schematic diagram of the construction method of the present invention. Figure 3 ; Figure 10 This is a schematic diagram of the construction method of the present invention. Figure 4 ; Figure 11This is a schematic diagram of the construction method of the present invention. Figure 5 ; Figure 12 This is a schematic diagram of the construction method of the present invention. Figure 6 ; Figure 13 This is a schematic diagram of the construction method of the present invention. Figure 7 ; Figure 14 This is a schematic diagram of the construction method of the present invention. Figure 8 ; The components are as follows: 1-Work vehicle body; 2-Motor 1; 3-Connecting ear plate; 4-Ball screw slider pair 1; 5-Matching male plate; 6-Slide groove 1; 7-Lifting cylinder; 8-Rail wheel; 9-Motor 2; 10-Auxiliary vehicle body; 11-Motor 3; 12-Ball screw slider pair 2; 13-Slide groove 2; 14-Matching female plate; 15-Pin; 16-Road wheel; 17-Storage box; 18-Maintenance work platform box; 19-Scissor fork mechanism; 20-Through groove; 21-Wheel frame; 22-Wheel seat; 23-Roller; 24-Side wheel; 25-Winder; 26-Column; 27-Pulley; 28-Wire rope; 29-Platform. Detailed Implementation

[0016] The invention will be further described with reference to the accompanying drawings.

[0017] As shown in the figure, a work vehicle for maintenance in tunnels includes a rail work vehicle, a lateral auxiliary vehicle, a lifting maintenance mechanism, and a tilting assembly. The track-operated vehicle includes a vehicle body 1. The top surface of the vehicle body 1 is equipped with a motor 2 and two connecting lugs 3. A ball screw slider assembly 4 is installed at the output end of the motor 2. The motor 2 drives the ball screw on the ball screw slider assembly 4 to rotate, thereby moving the slider on the ball screw slider assembly 4 along the length of the ball screw. The connecting lugs 3 are located on both sides of the motor 2. The other side of the vehicle body 1 has perforated male plates 5 at both ends. The top surface of the vehicle body 1 has sliding grooves 6 at both ends. The end of the sliding groove 6 closest to the male plate 5 is open, and the open end has a chamfer or rounded corner. A track wheel 8 is connected to the bottom of the vehicle body 1 via a lifting cylinder 7. A motor 9 is located above the track wheel 8. The output end of the motor 9 is connected to a reduction gearbox, and the output end of the reduction gearbox is connected to the track wheel 8. The motor 9, in conjunction with the reduction gearbox, drives the track wheel 8 to rotate, enabling the track wheel 8 to travel on the track.

[0018] The lateral movement auxiliary vehicle includes an auxiliary vehicle body 10. A motor 3 11 is mounted on the top surface of the auxiliary vehicle body 10. A ball screw slider pair 2 12 is installed at the output end of the motor 3 11. The motor 3 11 can drive the ball screw on the ball screw slider pair 2 12 to rotate, thereby causing the slider on the ball screw slider pair 2 12 to move along the length of the ball screw. Slide grooves 2 13 are provided on both sides of the ball screw slider pair 2 12. A perforated docking female plate 14 is provided on one side of the auxiliary vehicle body 10. The docking female plate 14 is connected to the docking male plate 5 of the working vehicle body 1 via a pin 15. The end of the slide groove 2 13 near the docking female plate 14 is open, and the open end has a chamfer or rounded corner. A road wheel 16 is provided below the auxiliary vehicle body 10. A motor 4 is provided above the road wheel 16. A reduction gearbox is connected to the output end of the motor 4. The output end of the reduction gearbox is connected to the road wheel 16. The motor 4, in conjunction with the reduction gearbox, drives the road wheel 16 to rotate, thereby enabling the road wheel 16 to move.

[0019] The lifting and maintenance mechanism includes a storage box 17 and a maintenance operation platform box 18 located on the upper part of the storage box 17. The storage box 17 and the maintenance operation platform box 18 are connected by a scissor mechanism 19. A through groove 20 is provided at the middle of the bottom of the storage box 17. The through groove 20 matches the ball screw slider pair 4 and the ball screw slider pair 12. Traveling wheels are symmetrically provided on both sides of the through groove 20.

[0020] The number of walking wheels on each side is at least three. The walking wheels are a set of carrying pole wheels. The walking wheels include a wheel frame 21. Wheel seats 22 are symmetrically provided on both sides of the wheel frame 21. The wheel seats 22 are rotatably engaged with the wheel frame 21. Two rollers 23 are installed on the wheel seats 22. The wheel frame 21 is located between the two rollers 23. Side wheels 24 are installed on the outer side of the wheel seats 22.

[0021] The traveling wheels are a set of spreader wheels, which can adapt to situations where there is a height difference (error ≤ 30mm) between the bottom surfaces of slide 6 and slide 13. If a single wheel is used, occasionally a single wheel will get stuck when entering slide 13, increasing the travel time. In addition, the requirements for the height difference between the bottom surfaces of slide 6 and slide 13 are extremely strict (error ≤ 5mm). However, after replacing it with a set of spreader wheels, the above problems are completely solved.

[0022] The tilting assembly includes two winches 25 and a column 26 located on the auxiliary vehicle body 10. The winches 25 are located on the side closer to the motor 3 11, and the column 26 is located on the side away from the motor 3 11. A pulley 27 is installed at the top of the column 26. A steel wire rope 28 is wound on the winches 25. The other end of the steel wire rope 28 passes around the pulley 27 and is connected to the connecting ear plate 3 on the top surface of the working vehicle body 1.

[0023] A construction method for a work vehicle used for maintenance inside tunnels includes the following steps: S1. Construct platform 29 on one side of the track. The construction of platform 29 shall not affect the passage of trains. The scissor lift mechanism 19 descends and is stored in the storage box 17. The rail work vehicle moves to one side of the platform 29. The lateral auxiliary vehicle is set on the platform 29. The slider on the ball screw slider pair 4 is connected to the lifting and maintenance mechanism. The traveling wheel is located in the slide groove 6. S2. The lateral auxiliary vehicle moves toward the rail work vehicle and adjusts the lifting cylinder 7 synchronously until the male plate 5 and the female plate 14 are aligned and connected by the pin 15. The preferred diameters of the male and female plates 5 and 14 are 55-60mm, and the preferred diameter of the pin 15 is 50mm. The diameters of the male and female plates 5 and 14 are 5-10mm larger than the diameter of the pin 15. This is to reduce the difficulty of docking and improve the efficiency of docking, so as to achieve successful docking within 1 minute. At the same time, the height requirement of the platform 29 is: after the rail work vehicle and the lateral movement auxiliary vehicle are connected by the pin 15, the allowable error of the height difference between the bottom surface of the first slide 6 and the bottom surface of the second slide 13 can reach 30mm. This error will be adapted by the spreader wheel set. This is to prevent the high precision requirement from causing great difficulty in docking.

[0024] S3. Motor 12 drives ball screw slider pair 4 to move the lifting and maintenance mechanism towards the lateral auxiliary vehicle until the storage box 17 is connected to the slider on ball screw slider pair 2 12, separating the slider on ball screw slider pair 4 from the lifting and maintenance mechanism. Then, motor 311 drives ball screw slider pair 2 12 to move the lifting and maintenance mechanism completely onto the lateral auxiliary vehicle. S4. The wire rope 28 pulled out by the winch 25 passes around the pulley 27 and connects to the connecting ear plate 3; S5. The winch 25 starts, the wire rope 28 is tensioned, and then the lifting cylinder 7 is retracted, causing the track wheel 8 to disengage from the track. S6, the winch 25 continues to rotate, causing the rail work vehicle to rotate 30-45° around the pin 15, and the lateral auxiliary vehicle moves backward synchronously, thus causing the rail work vehicle to leave the rail area.

Claims

1. A work vehicle for maintenance inside tunnels, characterized in that: Includes rail work vehicle, lateral movement auxiliary vehicle, lifting and maintenance mechanism and tilting assembly; The railcar includes a car body (1), the top surface of the car body (1) is provided with a motor (2) and two connecting lugs (3), the output end of the motor (2) is equipped with a ball screw slider pair (4), the connecting lugs (3) are located on both sides of the motor (2), the other two sides of the car body (1) are provided with a hole-filled male plate (5), the top surface of the car body (1) is provided with a sliding groove (6), the sliding groove (6) is open at one end near the male plate (5); the bottom of the car body (1) is connected to a rail wheel (8) through a lifting cylinder (7), the top of the rail wheel (8) is provided with a motor (9), the output end of the motor (9) is connected to a reduction gearbox, and the output end of the reduction gearbox is connected to the rail wheel (8).

2. The work vehicle for tunnel maintenance according to claim 1, characterized in that: The lateral movement auxiliary vehicle includes an auxiliary vehicle body (10). The top surface of the auxiliary vehicle body (10) is provided with a motor three (11). The output end of the motor three (11) is equipped with a ball screw slider pair two (12). The two sides of the ball screw slider pair two (12) are provided with a sliding groove two (13). One side of the auxiliary vehicle body (10) is provided with a docking mother plate (14) with holes. The docking mother plate (14) is connected to the docking male plate (5) of the working vehicle body (1) through a pin (15). The sliding groove two (13) is open at one end near the docking mother plate (14). The auxiliary vehicle body (10) is provided with a road wheel (16) below it. The road wheel (16) is provided with a motor four above it. The output end of the motor four is connected to a reduction gearbox. The output end of the reduction gearbox is connected to the road wheel (16).

3. A work vehicle for tunnel maintenance according to claim 2, characterized in that: The lifting and maintenance mechanism includes a storage box (17) and a maintenance operation platform box (18). The storage box (17) and the maintenance operation platform box (18) are connected by a scissor mechanism (19). A through groove (20) is provided at the bottom center of the storage box (17). The through groove (20) matches the first ball screw slider pair (4) and the second ball screw slider pair (12). Traveling wheels are symmetrically provided on both sides of the through groove (20).

4. A work vehicle for tunnel maintenance according to claim 3, characterized in that: The number of walking wheels on each side is at least three. The walking wheels are a set of carrying pole wheels. The walking wheels include a wheel frame (21). Wheel seats (22) are symmetrically provided on both sides of the wheel frame (21). The wheel seats (22) are rotatably engaged with the wheel frame (21). Two rollers (23) are installed on the wheel seats (22). The wheel frame (21) is located between the two rollers (23). Side wheels (24) are installed on the outer side of the wheel seats (22).

5. A work vehicle for tunnel maintenance according to claim 4, characterized in that: The tilting assembly includes two winches (25) and a column (26) located on the auxiliary vehicle body (10). The winches (25) are located on the side closer to the motor three (11), and the column (26) is located on the side away from the motor three (11). A pulley (27) is installed at the top of the column (26). A wire rope (28) is wound on the winches (25). The other end of the wire rope (28) passes around the pulley (27) and is connected to the connecting ear plate (3) on the top surface of the work vehicle body (1).

6. A work vehicle for tunnel maintenance according to claim 1, characterized in that: The open end of the chute (6) is provided with a chamfer or rounded corner.

7. A work vehicle for tunnel maintenance according to claim 2, characterized in that: The open end of the second chute (13) is provided with a chamfer or rounded corner.

8. A construction method for a work vehicle used for tunnel maintenance as described in any one of claims 1-7, characterized in that: Includes the following steps: S1. A platform (29) is built on one side of the track. The scissor mechanism (19) descends and is stored in the storage box (17). The track work vehicle moves to one side of the platform (29). The lateral auxiliary vehicle is set on the platform (29). The slider on the ball screw slider pair (4) is connected to the lifting and maintenance mechanism. The traveling wheel is located in the slide groove (6). S2. The lateral auxiliary vehicle moves toward the rail work vehicle and adjusts the lifting cylinder (7) synchronously until the male plate (5) and the female plate (14) are aligned and connected by the pin (15). S3. Motor 1 (2) drives ball screw slider pair 1 (4) to move the lifting and maintenance mechanism towards the lateral auxiliary vehicle until the storage box (17) is connected to the slider on ball screw slider pair 2 (12), separating the slider on ball screw slider pair 1 (4) from the lifting and maintenance mechanism. Then, motor 3 (11) drives ball screw slider pair 2 (12) to move the lifting and maintenance mechanism completely onto the lateral auxiliary vehicle. S4. The wire rope (28) pulled out by the winch (25) passes over the pulley (27) and connects to the connecting ear plate (3); S5. The winch (25) is started, the wire rope (28) is tensioned, and then the lifting cylinder (7) is retracted, so that the track wheel (8) is disengaged from the track; S6. The winch (25) continues to rotate, causing the rail work vehicle to rotate 30-45° around the pin (15), and the lateral auxiliary vehicle moves backward synchronously, thereby causing the rail work vehicle to leave the rail area.

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