A combined sleeper replacement unit

Abstract

An embodiment of the present application provides a combined sleeper replacement unit, which includes a sleeper conveyor vehicle and several sleeper replacement vehicles connected in sequence; the sleeper conveyor vehicle is used to convey new sleepers to the sleeper replacement vehicles and recycle old sleepers; the sleeper replacement vehicle includes a replacement vehicle frame and a sleeper transport trolley. An upper conveyor belt and a lower conveyor belt are arranged above the replacement vehicle frame, and the sleeper transport trolley moves horizontally and / or vertically on the replacement vehicle frame; a movable sleeper replacement trolley that can move horizontally is arranged below the replacement vehicle frame. The combined sleeper replacement unit provided by the embodiment of the present application can complete the operation of replacing sleepers without damaging the old sleepers, and does not require track lifting or lining operations, and is applicable to the technical field of railway line maintenance and repair.

Description

Technical Field

[0001] This application relates to the technology of railway line maintenance, and particularly to a combined sleeper replacement unit. Background Art

[0002] Currently, the continuous sleeper replacement operation for old foreign railway lines is mainly carried out by using large rail and sleeper replacement equipment. These equipment have a long operation line, a large volume, low working efficiency, difficult construction organization, long operation time, and difficult parking.

[0003] In addition to this kind of large equipment in China, railway sleeper replacement machines modified from small excavators with multifunctional sleeper grabbing devices are mostly used for construction. The operation efficiency of a single unit is not high. When multiple units are spread out and operate simultaneously, it can flexibly meet the requirement of operation efficiency. This mode cannot transport sleepers at one time, and at least three construction operations need to be specially organized to completely complete the replacement of sleepers. The construction organization is difficult, the personnel demand is large, and the potential safety hazard is large.

[0004] Currently, all sleeper replacement equipment on the market, such as large rail and sleeper replacement equipment or sleeper replacement machines modified from small excavators, has the following defects: During construction, the actions of raising the track or lining the track are inevitable, which will damage the bed and the rail; Only a short distance of sleeper replacement can be achieved at one time, and it is necessary to frequently transport new sleepers and output old sleepers to meet the construction requirements, resulting in low construction efficiency; Two sets of equipment need to be set up respectively for the laying of new sleepers and the recovery of old sleepers, which increases the cost and the length of the whole sleeper replacement equipment; Since most of the existing sleeper replacement equipment is a complete production line, as long as one link fails, the construction has to be stopped, and the operation can only continue after the problematic link is repaired, which delays the construction progress. Summary of the Invention

[0005] In order to solve one of the above technical defects, a combined sleeper replacement unit is provided in the embodiments of this application.

[0006] The first aspect embodiment of this application provides a combined sleeper replacement unit, including a sleeper conveyor vehicle and several sleeper replacement vehicles connected in sequence; the sleeper conveyor vehicle is used to convey new sleepers to the sleeper replacement vehicles and recover old sleepers.

[0007] The sleeper replacement vehicle includes: a replacement vehicle frame and a sleeper transport trolley. An upper conveyor belt and a lower conveyor belt are provided above the replacement vehicle frame. The sleeper transport trolley moves horizontally and / or vertically on the replacement vehicle frame; A horizontally movable mobile sleeper replacement trolley is arranged below the replacement vehicle frame.

[0008] A lifting mechanism is provided at the front end above the replacement vehicle frame, and a folding and lifting conveyor belt is provided at the rear end. The sleeper transport trolley can vertically lift in the lifting mechanism and move horizontally on the replacement vehicle frame.

[0009] A lifting flat conveyor belt is provided at the end of the frame of the mobile sleeper-changing trolley.

[0010] The sleeper conveyor vehicle includes a special flatbed vehicle. The special flatbed vehicle is provided with a transfer conveyor belt. One end of the transfer conveyor belt can horizontally slide on the special flatbed vehicle, and the other end of the transfer conveyor belt can vertically lift. A hoisting transport vehicle is also provided on the special flatbed vehicle.

[0011] A sliding platform is provided at the front end of the special flatbed vehicle, and a lifting guide post is provided at the rear end of the special flatbed vehicle. The transfer conveyor belt is provided on the sliding platform and the lifting guide post. One end of the transfer conveyor belt can horizontally slide on the sliding platform, and the other end of the transfer conveyor belt can vertically lift through the lifting guide post.

[0012] The sleeper replacement vehicle with a built-in sleeper circulation system in this application has an upper conveyor belt and a lower conveyor belt. It can not only carry more new sleepers for sleeper replacement operations, but also cooperate with the lifting mechanism, the sleeper transport trolley and the lifting flat conveyor belt to realize the circulation of new and old sleepers in the sleeper replacement vehicle with a built-in sleeper circulation system. There is no need to separately set up two sets of equipment for laying new sleepers and recycling old sleepers, which saves costs and reduces the length / volume of the overall equipment; moreover, there is no need to frequently transport new sleepers and output old sleepers, which greatly saves transportation costs and increases construction efficiency. Description of the Drawings

[0013] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0014] Figure 1 Schematic structural diagram of the sleeper replacement vehicle with a built-in sleeper circulation system provided by the embodiment of the present application;

[0015] Figure 2 Schematic structural diagram of a combined sleeper replacement unit provided by the embodiment of the present application;

[0016] Figure 3 Schematic structural diagram of the sleeper conveyor vehicle provided by the embodiment of the present application;

[0017] Figure 4 Schematic structural diagram of the power vehicle provided by the embodiment of the present application;

[0018] In the figure: 1 is a sleeper conveyor vehicle, 2 is a sleeper replacement vehicle with a self - contained sleeper circulation system, 3 is a power vehicle, 11 is a transfer conveyor belt, 12 is a special flat car, 14 is a hoisting and transporting vehicle, 15 is a lifting guide post, 16 is a sliding platform, 21 is a replacement vehicle frame, 13 and 23 are both lapped center plates, 24 is an upper conveyor belt, 25 is a lower conveyor belt, 26 is a sleeper transporting trolley, 27 is a folding and lifting conveyor belt, 28 is a mobile sleeper replacement trolley, 41 is an operation room, 42 is a gripping arm, 43 is a pneumatic wrench, 44 is a lifting support plate, 31 is a towing beam, 32 is a rest room, 33 is a power room, 34 is an operating driver's cab, 35 is a vehicle frame, 22 and 36 are both bogies. Detailed implementation manners

[0019] In order to make the technical solutions and advantages in the embodiments of the present application clearer and more understandable, the following further elaborates on the exemplary embodiments of the present application with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than an exhaustive list of all embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0020] In this embodiment, the direction along the extension of the rail is set as the longitudinal direction, the direction perpendicular to the extension of the rail is set as the transverse direction, and the direction perpendicular to the transverse and longitudinal directions is set as the vertical direction, with the traveling direction during mechanical operation being the front.

[0021] In the process of implementing the present application, the inventors found that there are the following defects in existing sleeper replacement equipment on the market, whether it is large - scale rail and sleeper replacement equipment or sleeper replacement machines transformed from small excavators: During construction, the actions of raising the track or lining the track are inevitable, which will damage the bed and the rail; Only a short - distance sleeper replacement can be achieved at a time, and it is necessary to frequently transport new sleepers and output old sleepers to meet the construction requirements, resulting in low construction efficiency; Two sets of equipment need to be set up respectively for the laying of new sleepers and the recycling of old sleepers, increasing the cost and the length of the entire sleeper replacement equipment; Since most of the existing sleeper replacement equipment is a complete production line, as long as one link fails, construction has to stop, and construction can only continue after the problem link is repaired, delaying the construction progress.

[0022] To address the above problems, the embodiments of the present application provide a sleeper replacement vehicle with a self - contained sleeper circulation system. As Figure 1 shown, it includes a replacement vehicle frame 21 and a sleeper transporting trolley 26. The replacement vehicle frame 21 serves as the basic frame and provides installation interfaces for various components. A bogie is provided at the bottom of the replacement vehicle frame 21 for traveling.

[0023] Above the replacement vehicle frame 21, there are an upper conveyor belt 24 and a lower conveyor belt 25. The sleeper transport trolley 26 can move horizontally and / or vertically on the replacement vehicle frame 21 and is used to transfer sleepers between the position where the sleepers are stored and the conveyor belts.

[0024] Below the replacement vehicle frame 21, there is a moving sleeper replacement trolley 28 that moves horizontally in the front-rear direction. The moving sleeper replacement trolley 28 is used to remove the old sleepers and transfer them to the corresponding conveyor belts, and place the new sleepers transported by the conveyor belts in place. Specifically, the moving sleeper replacement trolley 28 can self-drive forward and backward along the inner side of the I-beam of the replacement vehicle frame 21.

[0025] The technical solution provided in this embodiment uses a replacement vehicle frame and a sleeper transport trolley. Above the replacement vehicle frame, there are an upper conveyor belt and a lower conveyor belt. The sleeper transport trolley moves horizontally and / or vertically on the replacement vehicle frame and is used to convey sleepers. Below the replacement vehicle frame, there is a moving sleeper replacement trolley that can move horizontally to perform the sleeper replacement operation and cooperate with the conveyor belts to transfer the old and new sleepers. The technical solution provided in this embodiment can achieve the replacement and transportation of sleepers with one sleeper replacement vehicle, with relatively high construction efficiency and the ability to continuously construct.

[0026] On the basis of the above technical solution, a lifting mechanism is provided at the front end above the replacement vehicle frame 21. At the rear end above the replacement vehicle frame 21, there is a folding and lifting conveyor belt 27. The sleeper transport trolley 26 can vertically lift within the lifting mechanism, and the sleeper transport trolley 26 can move horizontally on the replacement vehicle frame 21.

[0027] At the end of the frame of the moving sleeper replacement trolley 28, there is a lifting flat conveyor belt 44. After the lifting flat conveyor belt 44 rises, it docks with the sleeper transport trolley 26. The sleeper transport trolley 26 can be raised to dock with the upper conveyor belt 24 so that the sleepers can be transferred between the sleeper transport trolley 26 and the upper conveyor belt 24, or lowered to dock with the lower conveyor belt 25 so that the sleepers can be transferred between the sleeper transport trolley 26 and the lower conveyor belt 25.

[0028] Further, the upper conveyor belt 24 and the lower conveyor belt 25 are of a two-side chain and pallet structure, and the forward and reverse rotation of the chain can be used to push the sleepers forward or backward.

[0029] Further, the moving sleeper replacement trolley 28 includes an operation room 41, a grabbing arm 42, and a pneumatic wrench 43. The grabbing arm 42 has two output ends, and a scraper and a gripper are respectively installed on the two output ends. The grabbing arm 42 further includes an arm frame and a hydraulic device, and the gripper is driven by hydraulic power to grab the sleepers. The scraper is used to scrape off the rubber pads and ballast on the surface of the sleepers. The pneumatic wrench 43 is used to grab the sleeper fasteners for removal and installation.

[0030] As Figures 2 - 4As shown in the figure, this embodiment also provides a combined sleeper replacement unit, which includes a sleeper conveyor car 1, several sleeper replacement cars 2 connected in sequence, and a power car 3 that provides traction force. The sleeper replacement car 2 can be implemented by any of the above contents.

[0031] The sleeper conveyor car 1 includes a special flat car 12. A sliding platform 16 is provided at the front end of the special flat car 12, and a lifting guide post 15 is provided at the rear end of the special flat car 12. A transfer conveyor belt 11 is provided on the sliding platform 16 and the lifting guide post 15. One end of the driving conveyor belt 11 can horizontally slide on the sliding platform 16, and the other end of the driving conveyor belt 11 can be vertically lifted through the lifting guide post 15. A hoisting transport vehicle 14 is also provided on the special flat car 12; the power car 3 includes a traction shaft 31, a rest room 32, a power room 33, an operation driver's cab 34, a vehicle frame 35, and a bogie 36.

[0032] Furthermore, the combined sleeper replacement unit further includes a sleeper transport vehicle. A running track is provided on the sleeper transport vehicle, and a running track is also provided on the special flat car 12. The sleeper transport vehicle is coupled with the sleeper conveyor car 1 and the running tracks of the two vehicles are connected. Running drive wheels are provided under the hoisting transport vehicle 14, and the hoisting transport vehicle 14 horizontally moves on the running tracks of the sleeper transport vehicle and the sleeper conveyor car 1 through the running drive wheels.

[0033] Furthermore, the power car 3 is used to provide the traction power of the unit, the air source for braking, the power supply for the whole machine, and the operation control system for the whole machine.

[0034] Furthermore, the lapping center plate 13 of the sleeper conveyor car 1 is connected to the front lapping center plate 23 of the sleeper replacement car 2 with a self - contained sleeper circulation system to complete the lapping of the two vehicles, and the sleeper conveyor car 1 and the sleeper replacement car 2 with a self - contained sleeper circulation system share a bogie 22; between multiple sleeper replacement cars 2 with a self - contained sleeper circulation system, the front lapping center plate 23 of the rear car is connected to the rear lapping center plate of the front car to complete the lapping of the two vehicles, and each car shares the front bogie 22 with the front car; between the sleeper replacement car 2 with a self - contained sleeper circulation system and the power car 3, the rear lapping center plate 23 of the sleeper replacement car 2 with a self - contained sleeper circulation system is connected to the traction shaft 31 of the power car 3, and the power car 3 is separately provided with two groups of bogies 36.

[0035] This embodiment also provides an operation method for the above - mentioned combined sleeper replacement unit, including the following steps:

[0036] S1. Loading sleepers: Hoist the sleepers in the sleeper transport special vehicle onto the transfer conveyor belt 11 through the hoisting transport vehicle 14;

[0037] S2. Sleeper Transportation: Operate the lifting guide post 15 to raise or lower the right end of the transfer conveyor belt 11 until it is flush with the upper conveyor belt 24 or the lower conveyor belt 25. Synchronously operate the transfer conveyor belt 11 and the upper conveyor belt 24 or the lower conveyor belt 25 to transfer the sleepers on the transfer conveyor belt 11 to the upper conveyor belt 24 or the lower conveyor belt 25 until the number of sleepers carried on the upper conveyor belt 24 or the lower conveyor belt 25 meets the requirements of the operation.

[0038] S3. New Sleeper Replacement: The sleeper replacement vehicle 2 with a built-in sleeper circulation system moves to the construction section to be constructed under the traction of the power vehicle 3. The lower conveyor belt 25 transfers the new sleepers 46 to the sleeper transportation trolley 26. The sleeper transportation trolley 26 vertically descends to the replacement vehicle frame 21 through the lifting mechanism and then horizontally moves to the end of the frame of the mobile sleeper replacement trolley 28. The sleeper transportation trolley 26 transfers the new sleepers 46 to the lifting flat conveyor belt 44. The lifting flat conveyor belt 44 vertically descends to an appropriate height. The mobile sleeper replacement trolley 28 takes out the old sleepers 45 from the operation section and places them on the lifting flat conveyor belt 44. The mobile sleeper replacement trolley 28 continues to grab the new sleepers 46 and completes the installation of the new sleepers 46, and drives the mobile sleeper replacement trolley 28 to the next sleeper replacement position.

[0039] S4. Old Sleeper Storage: While the new sleepers 46 are being installed, the lifting flat conveyor belt 44 vertically ascends and transfers the old sleepers 45 to the sleeper transportation trolley 26. The sleeper transportation trolley 26 horizontally moves to the lifting mechanism and then vertically ascends to the upper conveyor belt 24. The sleeper transportation trolley 26 transfers the old sleepers 45 to the upper conveyor belt 24 and then vertically descends to the lower conveyor belt 25. At the same time, the folding lifting conveyor belt 27 vertically ascends to the upper conveyor belt 24 and catches the new sleepers pushed out from the upper conveyor belt 24. The folding lifting conveyor belt 27 vertically descends to the lower conveyor belt 25 and transfers the new sleepers to the lower conveyor belt 25.

[0040] S5. Repeat steps S3 - S4. If the sleeper replacement operation is completed for this construction section, then execute step S6; if the lower conveyor belt 25 is already full of old sleepers, then execute S7.

[0041] S6. Send an instruction to the tractor 3, and the tractor 3 moves forward the distance of a group of sleepers, and continue to execute step S5 until the sleeper replacement operation for the entire construction section is completed.

[0042] S7. Reverse - transport the old sleepers on the sleeper replacement vehicle with a built - in sleeper circulation system to the sleeper transfer vehicle 1 for unified recycling. After the sleeper transfer vehicle 1 unloads the old sleepers through the hoisting transport vehicle 14, then execute steps S1, S2, and S5.

[0043] Further, in the step S3, when the sleeper-changing trolley 28 removes the old sleeper 45 and installs the new sleeper 46, the specific operations are as follows: The staff located in the operation room 41 manipulates to complete the sleeper-changing operation. The pneumatic wrench 43 is manipulated to loosen the sleeper fasteners. The grab arm 42 is manipulated to adjust to a certain angle so that its scraper contacts the ballast. The ballast in the sleeper box is scraped and gathered backward by the scraper of the grab arm 42 until a deep pit for removing the sleeper is formed. The grab arm 42 is manipulated to rotate a certain angle so that the center line of the grab arm 42 is aligned with the center line of the old sleeper 45. The vertical movement of the grab arm 42 is adjusted through the hydraulic device so that the gripper of the grab arm 42 clamps the old sleeper 45 to be replaced. The swing angle of the gripper of the grab arm 42 is manipulated to move the old sleeper 45 left and right and rotate it so that the old sleeper 45 does not interfere vertically with the rail. The old sleeper 45 is lifted and placed at the front end of the lifting flat conveyor belt 44. The gripper of the grab arm 42 is adjusted so that the gripper grabs the new sleeper 46 on the lifting flat conveyor belt 44. The gripper rotates and adjusts a certain angle so that the new sleeper 46 does not interfere vertically with the rail, and the new sleeper 46 is placed in the deep pit scraped by the grab arm scraper, and then the new sleeper 46 is rotated to be upright.

[0044] Further, in the step S2, when the new sleeper 46 is transported from the sleeper conveyor car 1 to the sleeper-changing car 2 with a built-in sleeper circulation system, the sleeper transport trolley 26 moves to between the upper conveyor belt 24 or the lower conveyor belt 25 and the transfer conveyor belt 11 through the lifting platform inside the lifting mechanism, serving as a transition connection section between the upper conveyor belt 24 or the lower conveyor belt 25 and the transfer conveyor belt 11. After the sleeper transport trolley 26 completes the transportation of the new sleeper 46 on the lower conveyor belt 25, it stays at the lower conveyor belt 25 waiting for the next instruction.

[0045] Further, in the step S2, when transporting new sleepers on multiple sleeper-changing cars 2 with a built-in sleeper circulation system, only the sleeper transport trolleys 26 at the front ends and the folding lifting conveyor belts 27 at the rear ends of all the sleeper-changing cars 2 with a built-in sleeper circulation system need to be adjusted to be aligned with the upper conveyor belt 24 or the lower conveyor belt 25 respectively, forming a complete sleeper conveyor belt connecting the sleeper conveyor car 1 to the last sleeper-changing car 2 with a built-in sleeper circulation system. After all are aligned with the upper conveyor belt 24 or the lower conveyor belt 25, the conveyor belt is started to push the new sleepers backward one by one. After the last sleeper-changing car 2 with a built-in sleeper circulation system is filled, the upper conveyor belt 24 of the last sleeper-changing car 2 with a built-in sleeper circulation system is stopped. After each section is filled, the conveyor belt is stopped until the first sleeper-changing car 2 with a built-in sleeper circulation system is filled.

[0046] Further, in the step S1, the sleeper conveyor car 1 can also be driven to the freight yard where the sleepers are stacked, and the sleepers in the freight yard are lifted onto the transfer conveyor belt 11 by the hoisting transport vehicle 14.

[0047] Further, when the vehicle is running, the folding and lifting conveyor belt 27 needs to be folded and retracted to avoid interference caused by the rotation of the conveyor belt during cornering.

[0048] During specific implementation, after receiving the sleeper replacement operation plan, the sleeper transfer vehicle 1 is driven to the freight yard where the sleepers are stacked. The sleepers in the freight yard are hoisted onto the transfer conveyor belt 11 by the hoisting transport vehicle 14, or a special sleeper transport vehicle is coupled to the rear of the unit, and the sleepers in the special sleeper transport vehicle are hoisted onto the transfer conveyor belt 11 by the hoisting transport vehicle 14.

[0049] In this application, after the sleeper transport vehicle is connected to the sleeper transfer vehicle, the running tracks of the two vehicles are connected. The hoisting transport vehicle moves on the running track and hoists the sleepers on the sleeper transport vehicle onto the transfer conveyor belt, so that the sleeper transfer vehicle does not need to frequently transport the sleepers back and forth between the freight yard where the sleepers are stacked and the construction site, further saving the transportation cost of transporting new and old sleepers.

[0050] The sleeper transfer vehicle 1 fully loaded with new sleepers 46 is connected to the sleeper replacement vehicle 2 with a self - contained sleeper circulation system. The lifting guide column 15 is lifted, and one end of the transfer conveyor belt 11 rises to the same height as the upper conveyor belt 24 under the action of the lifting guide column 15. At the same time, the other end of the transfer conveyor belt 11 horizontally slides within the sliding platform 16, and the transfer conveyor belt 11 and the upper conveyor belt 24 rotate clockwise synchronously to convey the new sleepers 46 onto the upper conveyor belt 24 until the number of new sleepers 46 carried on the upper conveyor belt 24 meets the operation requirements. Then the lifting guide column 15 descends, and one end of the transfer conveyor belt 11 descends to the same height as the lower conveyor belt 25 under the action of the lifting guide column 15. At the same time, the other end of the transfer conveyor belt 11 horizontally slides within the sliding platform 16, and the transfer conveyor belt 11 and the lower conveyor belt 25 rotate clockwise synchronously to convey the new sleepers 46 onto the lower conveyor belt 25 until the number of new sleepers 46 carried on the lower conveyor belt 25 meets the operation requirements;

[0051] To cooperate with the double - layer conveyor belt structure of the sleeper replacement vehicle with a self - contained sleeper circulation system, one end of the transfer conveyor belt on the sleeper transfer vehicle can be lifted or lowered under the action of the lifting guide column, and at the same time, the other end of the transfer conveyor belt horizontally slides within the sliding platform. With this structure, the sleeper transfer vehicle can transport the sleepers to the upper conveyor belt and the lower conveyor belt of the sleeper replacement vehicle with a self - contained sleeper circulation system respectively.

[0052] Specifically, when the sleeper transport trolley 26 is operating, there should be empty spaces to load new and old sleepers. Therefore, there should be no sleepers during the transfer. After loading is completed, a special pressing device is used to press and lock the sleepers on the conveyor belt. The whole process is program - controlled and requires little or only a small amount of manual intervention.

[0053] Specifically, when transporting the new sleeper 46 from the sleeper transport vehicle 1 to the sleeper replacement vehicle 2 with a built-in sleeper circulation system, the sleeper transport trolley 26 moves to between the upper conveyor belt 24 or the lower conveyor belt 25 and the transfer conveyor belt 11 through the lifting platform inside the lifting mechanism, acting as a transition connection section between the upper conveyor belt 24 or the lower conveyor belt 25 and the transfer conveyor belt 11. After the sleeper transport trolley 26 completes the transportation of the new sleeper 46 on the lower conveyor belt 25, it stays at the lower conveyor belt 25 waiting for the next instruction;

[0054] Before operation, the sleeper transfer vehicle 1, several sleeper replacement vehicles 2 with self - contained sleeper circulation systems and the power vehicle 3 are marshaled. The sleeper replacement vehicle 2 with the self - contained sleeper circulation system moves to the section to be constructed under the traction of the power vehicle 3. The lower conveyor belt 25 rotates counter - clockwise to move the new sleeper 46 onto the sleeper transport trolley 26 that stays here. The lifting platform inside the lifting mechanism causes the sleeper transport trolley 26 to descend to the plane of the replacement vehicle frame 21. Operate the running drive wheels under the sleeper transport trolley 26 to move the sleeper transport trolley 26 longitudinally to the end of the frame of the mobile sleeper replacement trolley 28 and dock with the raised lifting flat conveyor belt 44, and push the new sleeper 46 to the rear end of the lifting flat conveyor belt 44 through the running conveyor belt 44. The lifting flat conveyor belt 44 descends vertically by an appropriate height, and the mobile sleeper replacement trolley 28 starts the sleeper replacement operation, takes out the old sleeper 45 from the operation section and places it at the front end of the lifting flat conveyor belt 44. The mobile sleeper replacement trolley 28 grabs the new sleeper 46 and completes the installation of the new sleeper 46. While the mobile sleeper replacement trolley 28 installs the new sleeper 46, the lifting flat conveyor belt 44 with the old sleeper 45 on it moves vertically upward and docks with the sleeper transport trolley 26 that stays at the end of the frame of the mobile sleeper replacement trolley 28, stacks the old sleeper 45 onto the sleeper transport trolley 26. Operate the running drive wheels under the sleeper transport trolley 26 to move the sleeper transport trolley 26 to the lifting platform inside the lifting mechanism, and lift the sleeper transport trolley 26 to the same height as the upper conveyor belt 24 through the lifting platform inside the lifting mechanism. Synchronously rotate the conveyor belt on the sleeper transport trolley 26 and the upper conveyor belt 24 clockwise to convey the old sleeper 45 onto the upper conveyor belt 24; at the same time, unfold and raise the folding lifting conveyor belt 27 to be flush with the upper conveyor belt 24. The new sleeper pushed out on the upper conveyor belt 24 is caught by the folding lifting conveyor belt 27. The folding lifting conveyor belt 27 descends to be flush with the lower conveyor belt 25, and at the same time rotates the folding lifting conveyor belt 27 and the lower conveyor belt 25 counter - clockwise to push the new sleeper on the folding lifting conveyor belt 27 into the lower conveyor belt 25 to replenish the number of new sleepers on the lower conveyor belt 25; the mobile sleeper replacement trolley 28 moves forward to the next sleeper replacement position, moves the sleeper transport trolley 26 to the lower conveyor belt 25, and prepares to start the next cycle. Thus, a cycle of replacing a group of new and old sleepers is completed. Repeat the above steps until the sleeper replacement operation for this construction section is completed or the lower conveyor belt 25 is full of old sleepers, then stop the construction, recycle the old sleepers and replenish the new sleepers on the sleeper replacement vehicle 2 with the self - contained sleeper circulation system.

[0055] The sleeper replacement vehicle with a built-in sleeper circulation system in this application is equipped with an upper conveyor belt and a lower conveyor belt. It can not only carry more new sleepers for sleeper replacement operations, but also cooperate with the lifting mechanism, sleeper transport trolley, and lifting flat conveyor belt to realize the circulation of new and old sleepers in the sleeper replacement vehicle with a built-in sleeper circulation system. There is no need to separately set up two sets of equipment for laying new sleepers and recycling old sleepers, which saves costs and reduces the length / volume of the overall equipment. Moreover, there is no need to frequently transport new sleepers and output old sleepers, which greatly saves transportation costs and increases construction efficiency.

[0056] Specifically, during the construction of the mobile sleeper replacement trolley 28, the staff is located in the operation room 41 to operate and complete the sleeper replacement operation: operate the pneumatic wrench 43 to loosen the sleeper fasteners, operate the grab arm 42, adjust it by a certain angle so that its scraper contacts the ballast, and use the scraper of the grab arm 42 to scrape and gather the ballast in the sleeper box backward until a deep pit that can be used to take out the sleeper is formed; operate the grab arm 42 to rotate by a certain angle so that the center line of the grab arm 42 is aligned with the center line of the old sleeper 45, adjust the vertical movement of the grab arm 42 through the hydraulic device so that the gripper of the grab arm 42 clamps the old sleeper 45 to be replaced, operate the swing angle of the gripper of the grab arm 42 to move and rotate the old sleeper 45 left and right so that the old sleeper 45 does not interfere vertically with the rail, lift the old sleeper 45 and place it at the front end of the lifting flat conveyor belt 44. When the gripper stacks the sleepers, the old sleepers 45 are stacked in the front and the new sleepers 46 are placed in the back for the convenience of the gripper to pick up; adjust the gripper of the grab arm 42 so that the gripper grabs the new sleeper 46 on the lifting flat conveyor belt 44, rotate and adjust the gripper by a certain angle so that the new sleeper 46 does not interfere vertically with the rail, and place the new sleeper 46 into the deep pit scraped out by the grab arm scraper, and then rotate the new sleeper 46 upright, and manually operate the pneumatic wrench 43 to install fasteners for the new sleeper 46. After completing the replacement of a set of new and old sleepers, operate the mobile sleeper replacement trolley 28 to move forward to the next sleeper replacement position and repeat the above steps.

[0057] When the mobile sleeper replacement trolley on the sleeper replacement vehicle with a built-in sleeper circulation system in this application is performing the sleeper replacement operation, through the mutual cooperation of the pneumatic wrench, scraper, gripper, hydraulic device, etc., the old sleeper can be taken out without damaging it, and a new sleeper can be installed. There is no need for track lifting or lining operations, which has little impact on the deformation or force of the rail, and the safety risk during construction operations is small. The alignment of the line is maintained well, and the tracks before and after the operation area are available for the operation vehicle to travel, and the time for retracting and deploying the vehicle is short.

[0058] Specifically, the overall machine operation control system works in a programmed manner. It can at least realize the functions of loading new sleepers and unloading old sleepers for the whole vehicle through the sleeper conveyor vehicle, the function of selecting sleepers for internal sleeper circulation of a single machine; the function of rotating and replacing new and old sleepers clockwise or counterclockwise.

[0059] Specifically, every few sleepers form a group. After replacing a group of sleepers, the staff sends an instruction to the tractor 3, and the tractor 3 moves forward by the distance of this group of sleepers, so that the sleeper replacement vehicle 2 with a self - contained sleeper circulation system can replace the next group of old sleepers. As a preferred solution, replacing two sets of track panels in the design state can cover the length of one sleeper replacement vehicle 2 with a self - contained sleeper circulation system. After completing the replacement of all sleepers within the whole vehicle range, the power vehicle 3 moves forward to the next vehicle - length range for operation. Multiple vehicle - length ranges of operations can be carried out at one operation point. According to the operation volume requirements proposed by the owner, the number of sleeper replacement vehicles 2 with a self - contained sleeper circulation system to be used can be estimated in advance to meet the operation efficiency requirements for the day.

[0060] For example, if the sleeper replacement vehicle 2 with a self - contained sleeper circulation system occupies the space of 5 sleepers, the mobile sleeper replacement trolley 28 can move forward by the space of 5 sleepers. When each sleeper replacement vehicle 2 with a self - contained sleeper circulation system has completed the replacement of 5 sleepers, it notifies the main machine one by one through the whole - machine operation control system. After the main machine collects that all operations are completed, the whole machine moves forward by 5 rails, crossing the completed operation area. The mobile sleeper replacement trolley 28 of the sleeper replacement vehicle 2 with a self - contained sleeper circulation system retreats to the starting point of the track and finishes the remaining 5 sleepers that were not completed before. Through one step of the whole machine, the operation range of one vehicle length can be completed. In this way, the one - time operation length can be adjusted according to the need by increasing or decreasing the number of sleeper replacement vehicles 2 with a self - contained sleeper circulation system to meet the requirements. Within one operation skylight, the whole machine can complete the operation distance of multiple vehicle lengths.

[0061] In this application, multiple sleeper replacement vehicles 2 with a self - contained sleeper circulation system are used to synchronously carry out sleeper replacement operations. Through the combination of several sleeper replacement vehicles 2 with a self - contained sleeper circulation system, the operation mileage requirements of different lengths can be achieved within the same time. Each sleeper replacement vehicle 2 with a self - contained sleeper circulation system works independently without mutual influence, and each completes the work of laying new sleepers and recycling old sleepers within its own area. It can achieve the replacement of sleepers over a long distance at one time, and the damage of a single sleeper replacement vehicle 2 with a self - contained sleeper circulation system will not affect other sleeper replacement vehicles 2 with a self - contained sleeper circulation system, minimizing the impact of equipment failures on the construction efficiency of the crew.

[0062] Specifically, the power vehicle 3 includes a traction shaft 31, a rest room 32, a power room 33, an operating driver's cab 34, a vehicle frame 35, and a bogie 36. Before operation, the power vehicle 3 is connected to the sleeper replacement vehicle 2 with a self - contained sleeper circulation system and the sleeper conveyor vehicle 1 through the traction shaft 31 to form a vehicle group. During operation, the vehicle group is towed to the operation area by the power vehicle 3. The sleeper replacement vehicle 2 with a self - contained sleeper circulation system operates on the old sleepers. After the mobile sleeper replacement trolley 28 replaces a group of sleepers, it sends an instruction to the power vehicle 3. The power vehicle 3 pushes the whole vehicle forward by the distance of one group of sleepers. After replacing all sleepers within the whole vehicle range, the power vehicle 3 pushes the whole vehicle forward by the distance of the whole vehicle.

[0063] Specifically, when multiple sleeper replacement vehicles 2 with self - contained sleeper circulation systems are connected in a train set, new sleepers are transported to all the sleeper replacement vehicles 2 with self - contained sleeper circulation systems. It is only necessary to adjust the sleeper transport carts 26 at the front ends and the folding lifting conveyor belts 27 at the rear ends of all the sleeper replacement vehicles 2 with self - contained sleeper circulation systems to align with the upper conveyor belt 24 or the lower conveyor belt 25 respectively, forming a complete sleeper conveyor belt connecting the sleeper transfer vehicle 1 to the last sleeper replacement vehicle 2 with a self - contained sleeper circulation system. After all are aligned with the upper conveyor belt 24, the conveyor belt is started to push the new sleepers backward one by one. After the last sleeper replacement vehicle 2 with a self - contained sleeper circulation system is filled, the upper conveyor belt 24 of the last sleeper replacement vehicle 2 with a self - contained sleeper circulation system is stopped. After each vehicle is filled, the conveyor belt is stopped until the first sleeper replacement vehicle 2 with a self - contained sleeper circulation system is filled. Similarly, when it is necessary to unload and recycle the old sleepers from multiple sleeper replacement vehicles 2 with self - contained sleeper circulation systems, the above - mentioned method is used to convey in the reverse direction.

[0064] In this application, the sleeper transport cart and the folding lifting conveyor belt can be lifted / descended to the corresponding positions when new sleepers need to be transported on multiple sleeper replacement vehicles with self - contained sleeper circulation systems, acting as a transport bridge between multiple upper conveyor belts or multiple lower conveyor belts, so that a complete sleeper transport line is formed between multiple upper conveyor belts or multiple lower conveyor belts. The new sleepers on the upper and lower conveyor belts of the sleeper transfer vehicle can be transported to multiple sleeper replacement vehicles with self - contained sleeper circulation systems at one time, or the old sleepers on the upper and lower conveyor belts of multiple sleeper replacement vehicles with self - contained sleeper circulation systems can be transported to the sleeper transfer vehicle, further saving the additional transport costs caused by frequent transportation of new and old sleepers and increasing the construction efficiency. At the same time, the loading and unloading of the sleepers in this application only need to be carried out at the sleeper transport vehicle and the sleeper transfer vehicle, without moving the train set at the construction site, avoiding the power loss caused by moving the train set, delaying the construction and the errors brought by the replacement location.

[0065] Specifically, when the vehicle is running, the folding lifting conveyor belt 27 needs to be folded and retracted to avoid interference caused by the rotation of the conveyor belt when turning.

[0066] Specifically, different sleepers can be selected cyclically according to needs to meet the replacement operations of various sleepers.

[0067] It should be noted that all components in this embodiment are for illustrative purposes only. As long as the functions of the components can be achieved, they are not the only options. For example, the driving types of each conveyor belt, trolley, and lifting mechanism can be driven by motors, hydraulic motors, pneumatic motors, etc.; the actuating devices of each lifting mechanism can be driven in forms such as chains, oil cylinders, and air cylinders; the types of each guide rail can be rail, guide groove, dovetail, guide post, etc.; the lap between vehicles can be in forms such as center plate and center pin; the power source used by the sleeper replacement vehicle with a self - contained sleeper circulation system can be provided by the vehicle itself or an external power vehicle; the sleeper replacement vehicle with a self - contained sleeper circulation system can share a bogie with the front vehicle by lapping, or can also have two bogies by itself and be connected to the front vehicle by a coupler or a connecting rod, etc.

[0068] A sleeper replacement vehicle with a self - contained sleeper circulation system and an operation method provided in this embodiment connect a sleeper conveyor vehicle, several sleeper replacement vehicles with a self - contained sleeper circulation system, and a power vehicle providing traction in sequence to form a unit. This unit can self - propel and can meet the requirements of operation efficiency by combining several sleeper replacement vehicles with a self - contained sleeper circulation system. Each sleeper replacement vehicle with a self - contained sleeper circulation system is an operation point, and multiple points operate independently. The operation is flexible and does not affect each other. After combination, the overall efficiency of the machine is high. The sleeper replacement vehicle with a self - contained sleeper circulation system can transfer and store new and old sleepers, and can complete all sleeper replacement operations at one time, which has strong practicability.

[0069] 1. The sleeper replacement vehicle with a self - contained sleeper circulation system in this application has an upper conveyor belt and a lower conveyor belt. It can not only carry more new sleepers for sleeper replacement operations, but also cooperate with the lifting mechanism, sleeper transport trolley, and lifting flat conveyor belt to realize the circulation of new and old sleepers in the sleeper replacement vehicle with a self - contained sleeper circulation system. There is no need to separately set up two sets of equipment for laying new sleepers and recycling old sleepers, which saves costs and reduces the length / volume of the overall equipment at the same time; moreover, there is no need to frequently transport new sleepers and output old sleepers, which greatly saves transportation costs and increases construction efficiency.

[0070] 2. In this application, multiple sleeper replacement vehicles with a self - contained sleeper circulation system are used to synchronously perform sleeper replacement operations. By combining several sleeper replacement vehicles with a self - contained sleeper circulation system, the operation mileage requirements of different lengths can be achieved within the same time. Each sleeper replacement vehicle with a self - contained sleeper circulation system works independently without affecting each other, and each completes the work of laying new sleepers and recycling old sleepers in its own area. It can realize the replacement of sleepers over a long distance at one time, and the damage of a single sleeper replacement vehicle with a self - contained sleeper circulation system will not affect other sleeper replacement vehicles with a self - contained sleeper circulation system, minimizing the impact of equipment failures on the construction efficiency of the unit.

[0071] 3. When the mobile sleeper replacement trolley on the sleeper replacement vehicle with a built-in sleeper recycling system in this application performs the sleeper replacement operation, through the mutual cooperation of pneumatic wrenches, scrapers, grippers, hydraulic devices, etc., the old sleeper can be removed without damaging it, and a new sleeper can be installed. There is no need for track lifting or lining operations, which has little impact on the deformation or stress of the rails, with relatively low safety risks during construction operations, better maintenance of the track alignment, and the track before and after the operation area is available for the operation vehicle to travel, and the time for vehicle retraction and deployment is short.

[0072] 4. In this application, to cooperate with the double-layer conveyor belt structure of the sleeper replacement vehicle with a built-in sleeper recycling system, one end of the transfer conveyor belt on the sleeper transfer vehicle can be lifted or lowered under the action of the lifting guide post, and at the same time, the other end of the transfer conveyor belt slides horizontally within the sliding platform. With this structure, the sleeper transfer vehicle can transport sleepers to the upper conveyor belt and the lower conveyor belt of the sleeper replacement vehicle with a built-in sleeper recycling system respectively.

[0073] 5. In this application, the sleeper transport trolley and the folding lifting conveyor belt can be lifted / descended to the corresponding positions when it is necessary to transport new sleepers to multiple sleeper replacement vehicles with a built-in sleeper recycling system, acting as a transport bridge between multiple upper conveyor belts or multiple lower conveyor belts, so that a complete sleeper transport line is formed between multiple upper conveyor belts or multiple lower conveyor belts. The new sleepers on the upper and lower conveyor belts of multiple sleeper replacement vehicles with a built-in sleeper recycling system can be transported by the sleeper transfer vehicle at one time, or the old sleepers on the upper and lower conveyor belts of multiple sleeper replacement vehicles with a built-in sleeper recycling system can be transported to the sleeper transfer vehicle, further saving the additional transport costs caused by frequent transportation of new and old sleepers and increasing the construction efficiency.

[0074] 6. After the sleeper transport vehicle is connected to the sleeper transfer vehicle in this application, the running tracks of the two vehicles are connected. The hoisting transport vehicle moves on the running track and hoists the sleepers on the sleeper transport vehicle onto the transfer conveyor belt, so that the sleeper transfer vehicle does not need to frequently transport sleepers back and forth between the freight yard where the sleepers are stacked and the construction site, further saving the transport costs of transporting new and old sleepers.

[0075] 7. The loading and unloading of sleepers in this application only need to be carried out at the sleeper transport vehicle and the sleeper transfer vehicle, without moving the vehicle groups at the construction site, avoiding the power loss caused by moving vehicle groups, delaying construction, and the errors brought by changing locations.

[0076] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0077] In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0078] In the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or capable of communicating with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0079] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present application.

[0080] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these changes and modifications.

Claims

1. A combined sleeper replacement unit, characterized in that, It includes a sleeper conveyor car (1) and several sleeper replacement cars (2) connected in sequence; the sleeper conveyor car (1) is used to convey new sleepers to the sleeper replacement cars (2) and recycle old sleepers. The sleeper replacement car includes a replacement car frame (21) and a sleeper transport trolley (26). An upper conveyor belt (24) and a lower conveyor belt (25) are provided above the replacement car frame (21). The sleeper transport trolley (26) moves horizontally and / or vertically on the replacement car frame (21); a horizontally movable mobile sleeper replacement trolley (28) is provided below the replacement car frame (21). An elevating mechanism is provided at the front end above the replacement car frame (21), and a folding elevating conveyor belt (27) is provided at the rear end. The sleeper transport trolley (26) can vertically lift within the elevating mechanism and move horizontally on the replacement car frame (21). An elevating flat conveyor belt (44) is provided at the end of the structure of the mobile sleeper replacement trolley (28). The sleeper conveyor car (1) includes a special flat car (12). The special flat car (12) is provided with a driving conveyor belt (11). One end of the driving conveyor belt (11) can horizontally slide on the special flat car (12), and the other end of the driving conveyor belt (11) can vertically lift. A hoisting transport vehicle (14) is also provided on the special flat car (12). A sliding platform (16) is provided at the front end of the special flat car (12), and a lifting guide post (15) is provided at the rear end of the special flat car (12). The driving conveyor belt (11) is provided on the sliding platform (16) and the lifting guide post (15). One end of the driving conveyor belt (11) can horizontally slide on the sliding platform (16), and the other end of the driving conveyor belt (11) can vertically lift through the lifting guide post (15).

2. The modular sleeper replacement unit according to claim 1, characterized in that The upper conveyor belt (24) and the lower conveyor belt (25) are of a two-side chain support plate structure, and the forward or backward pushing of the sleepers can be realized by the forward and reverse rotation of the chains.

3. The combined sleeper replacement unit according to claim 1, characterized in that, The mobile sleeper replacement trolley (28) includes an operation room (41), a grabbing arm (42), and a pneumatic wrench (43). The grabbing arm (42) has two output ends, and a scraper and a gripper are respectively installed on the two output ends.

4. The modular sleeper replacement unit according to claim 3, wherein The grabbing arm (42) further includes an arm frame and a hydraulic device.

5. The combined sleeper replacement unit according to claim 1, wherein, It further includes a sleeper transport vehicle. A running track is provided on the sleeper transport vehicle, and a running track is also provided on the special flat car (12). The sleeper transport vehicle is coupled with the sleeper conveyor car (1) and the running tracks of the two vehicles are connected. Running driving wheels are provided below the hoisting transport vehicle (14), and the hoisting transport vehicle (14) horizontally moves on the running tracks of the sleeper transport vehicle and the sleeper conveyor car (1) through the running driving wheels.

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