Multifunctional rail engineering vehicle set with running direction reversing function

Abstract

According to the multifunctional rail engineering vehicle set with the running direction reversing function, a hydraulic winch winch is arranged at the front end of a rail engineering vehicle, and a hydraulic excavator is carried at the rear end of the rail engineering vehicle; one bottom face of a frame of the rail engineering vehicle is provided with an axle box locking oil cylinder corresponding to axle box end covers in the wheel set axle boxes in the vertical direction, and a rotary supporting device located between the two wheel set axle boxes is installed in the middle of the rail engineering vehicle. The rail engineering truck moves downwards from the lower end to rotate and reverse under rotating supporting of the rotary supporting device connected with the steel rail in an anti-sideslip fit mode. According to the invention, material transfer, traction, excavation and hoisting are realized, extra allocation equipment is not needed, the problem that a traditional rail engineering vehicle is limited by a rail structure and needs a special steering line to adjust the direction is solved, convenience is provided for single-track railway maintenance, tunnel construction and reversing in a limited scene of small operation interval space, the driving direction adjusting difficulty is reduced, and the working efficiency is improved. The operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of track engineering vehicles, and particularly relates to a multifunctional track engineering vehicle group with a running direction reversing function. BACKGROUND

[0002] In domestic and foreign railway construction and maintenance operations, in order to ensure the smooth development of construction, line equipment, operation materials and the like need to be transported to the construction site. As a core transport tool, the track vehicle undertakes the key task of material transfer. In the actual transportation process, due to factors such as the layout of the operation area, the requirements of the construction process and the like, it is often necessary to adjust the running direction of the track vehicle to adapt to the operation requirements, at which time the original turning operation of the track vehicle becomes a necessary link. However, due to the structural characteristics of the railway track, the track engineering vehicle can usually only run straight along the extension direction of the track. In the operation scene without a special turning track (such as a turnout turning section), it is difficult to adjust the running direction. Especially in single-line railway maintenance, tunnel construction or small operation intervals, due to limited space, it is impossible to lay a special turning track, and the direction adjustment requirement of the track engineering vehicle becomes a key problem restricting the operation efficiency. Therefore, in order to solve the above-mentioned direction adjustment problem of the track vehicle. SUMMARY

[0003] The technical problem solved by the present application is to provide a multifunctional track engineering vehicle group with a running direction reversing function. By arranging a rotary support device at the bottom of the track engineering vehicle, material transfer, traction, excavation and hoisting can be realized synchronously without the need for additional equipment. At the same time, the multifunctional track engineering vehicle group has the function of reversing the running direction of the single-line track, solves the problem that the traditional track engineering vehicle needs a special turning track to adjust the direction due to the limitation of the track structure, provides convenience for the direction reversing in the scene of single-line railway maintenance, tunnel construction and small operation intervals with limited space, and can reverse the direction without a special turning track, thereby breaking through the space limitation, reducing the difficulty of adjusting the running direction and improving the operation efficiency.

[0004] The technical solution adopted by the present application is a multifunctional track engineering vehicle group with a running direction reversing function, which comprises track engineering vehicles connected in head-to-tail and a track flat car with a truck-mounted crane at the rear end. The front end of the track engineering vehicle is provided with a hydraulic winch hoist, and the rear end of the track engineering vehicle is provided with a hydraulic excavator. The bottom surface of the frame of the track engineering vehicle is provided with an axle box locking oil cylinder corresponding to the upper and lower positions of the axle box end cover in the wheel set axle box. The rotary support device is arranged between the two sets of wheel set axle boxes in the middle of the track engineering vehicle. When the track engineering vehicle needs to reverse during uncoupling, the axle box locking oil cylinder piston rod is connected to the axle box end cover through a connecting pin, and after the axle box locking oil cylinder piston rod is retracted to drive the wheel set axle box to move upward, the track engineering vehicle moves downward at the lower end to rotate and reverse under the rotation support of the rotary support device connected to the anti-skid steel rail.

[0005] The rotary supporting device comprises a support assembly fixed to the bottom of the frame of the track engineering vehicle and an anti-skid supporting seat located below the frame, the anti-skid supporting seat is rotationally connected to the fixing seat above it through a rotary bearing, the lifting device installed on the upper end surface of the fixing seat is connected with the support assembly, and the anti-skid supporting seat is driven by the lifting device to move up and down, so as to realize the separation or anti-skid adaptation of the anti-skid supporting seat and the steel rail, and the anti-rotation locking device is rotationally installed on the support assembly and detachably connected with the anti-skid supporting seat in the non-working state.

[0006] Further, the lifting device comprises two symmetrically arranged bidirectional oil cylinders, the upper end of the bidirectional oil cylinder is fixedly connected with the support assembly, and the lower end of the piston rod of the bidirectional oil cylinder is connected with the fixing seat.

[0007] Further, the fixing seat comprises an upper ring plate, a wear plate, two upper seats symmetrically fixed to the upper ring plate in a central and symmetrical manner, the upper ring plate is fixed to the upper end surface of the outer ring of the rotary bearing, and the inner ring of the rotary bearing is fixedly connected with the anti-skid supporting seat, the piston rod of the bidirectional oil cylinder extending into the inside of the upper seat is connected with the middle part of the upper seat through a pin shaft, and the wear plates are fixed on the outer end surface and the inner side wall of the upper seat.

[0008] Further, the support assembly comprises a fixing seat and a limiting seat, two fixing seats corresponding in position to the two bidirectional oil cylinders in the lifting device are fixed to the bottom of the frame, the bidirectional oil cylinder with the upper end fitted into the fixing seat is fixedly connected with the fixing seat, four limiting seats are fixed to the bottom surface of the frame, L-shaped limiting plates are fixed to the inner side walls of the limiting seats, and the wear plates on the outer end surface and the inner side wall of the upper seat are respectively in contact with the long side plates and the short side plates of the L-shaped limiting plates.

[0009] Further, the anti-skid supporting seat comprises a lower ring plate, a channel steel and a stop block, the lower ring plate is fixedly connected with the outer ring of the rotary bearing, two channel steels vertically arranged with the steel rail are fixedly arranged on the bottom surface of the lower ring plate in a symmetrical manner, and two stop blocks fixed to the bottom surface of the channel steel in a central and symmetrical manner are respectively located on the inner side of the steel rail on the same side.

[0010] Further, the anti-rotation locking device comprises a hook and an operating rod, the limiting seat in the support assembly is fixed with a mounting seat, the middle part of the hook is hingedly connected to the mounting seat, the upper end of the hook is hingedly connected with one end of the operating rod, and the hook plate fixed to the lower ring plate of the anti-skid supporting seat is hung with the lower end of the hook in the non-working state of the upper moving suspension, and the separation of the hook and the hook plate is realized by pulling the operating rod outward.

[0011] Further, the track engineering vehicle is provided with a grab rail device corresponding to the upper and lower positions of the corresponding side rail, and the grab rail device is controlled to move downward to tightly hold the rail in the construction state of the track engineering vehicle or move upward to separate from the rail in the running state of the track engineering vehicle.

[0012] Further, the air compressor arranged at the bottom of the vehicle frame is driven by the front end of the engine, and the rear end of the engine is connected with the hydraulic gearbox through a transmission shaft II, the hydraulic gearbox is connected with the hydraulic pump, and the hydraulic gearbox is connected with the front and rear axle gearboxes through transmission shafts II.

[0013] Further, the track flat car is supported by two bogies arranged at the bottom of the second vehicle frame, the front end and the upper side of the second vehicle frame are fixed with guardrails, the rear end of the platform of the second vehicle frame is provided with diesel generator sets and crane hydraulic stations on both sides of the truck-mounted crane, and the front and rear ends of the track flat car are provided with buffer devices and traction devices.

[0014] Compared with the prior art, the present application has the following advantages: 1. The technical solution can realize simultaneous material transfer, traction, excavation and lifting without additional deployment of equipment, and has the function of single-line driving direction reversing, solving the problem that the traditional track engineering vehicle needs a special reversing line to adjust the direction, providing convenience for single-line railway maintenance, tunnel construction and small operation interval space reversing, and reversing in place without a special reversing line, breaking through the space limitation, reducing the difficulty of driving direction adjustment, and improving the operation efficiency. 2. The technical solution provides a rotating support condition for the reversing of the driving direction of the track engineering vehicle by arranging a structure that uses a slewing bearing to rotationally connect the anti-skid support seat and the fixed seat under the vehicle frame, and cooperates with the lifting device to drive the anti-skid support seat to adapt to the anti-skid of the rail, thereby realizing the reversing of the driving direction of the track engineering vehicle in the working condition without a special reversing line, solving the defect that the track engineering vehicle is difficult to adjust the direction in the working condition without a special reversing line in the prior art, improving the operation efficiency and flexibility. 3. The technical solution limits the lateral displacement of the track engineering vehicle during the reversing process by arranging a stop block on the bottom surface of the base that is located inside the rail when the anti-skid support seat moves downward to contact the rail, thereby avoiding skidding and ensuring the safety of the reversing process. 4. The technical solution provides a locking and limiting condition for the anti-skid support seat in the non-working state by rotationally installing a hook on the limiting seat that is hung with a hook plate on the anti-skid support seat, thereby improving the stability and safety of the track engineering vehicle during operation in the non-working state of the anti-skid support seat, and preventing it from rotating randomly. 5、The technical scheme has simple structure and reasonable design, does not need to transform the original wheel set structure of the track engineering vehicle, is suitable for the existing track engineering vehicle, the setting of the wear plate is beneficial to reduce the component wear, prolong the service life, and reduce the maintenance cost, the track engineering vehicle integrates the hydraulic winch hoist and the hydraulic excavator, the track flat car carries the truck crane, and multiple operations such as material transfer, traction, excavation and hoisting can be realized simultaneously, a plurality of single-function devices need not to be allocated, the equipment cost and operation time are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structural front view of the present application; Figure 2 It is the structural plan view of the present application; Figure 3 It is the power distribution diagram of the track engineering vehicle of the present application; Figure 4 It is the rotary support state diagram of the rotary support device and the rail anti-side slip adaptation of the bottom of the vehicle frame one; Figure 5 It is the structural front view of the rotary support device of the present application; Figure 6 It is the structural plan view of the rotary support device of the present application; Figure 7 It is the structural left view of the rotary support device of the present application; Figure 8 It is the structural front view of the support assembly installed on the vehicle frame one of the present application; Figure 9 It is the structural bottom view of the support assembly installed on the vehicle frame one of the present application; Figure 10 It is the structural left view of the support assembly installed on the vehicle frame one of the present application. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the present application will be described below. Figures 1-10 The technical scheme in the embodiments of the present application will be described below.

[0017] It should be noted that, in this article, unless otherwise stated, it is understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0018] In this article, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations. The element defined by the statement "includes a..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0019] The multifunctional track engineering vehicle group with the running direction reversing function, such as Figures 1-2As shown, including the track engineering vehicle 1 and the track flat car 2 with the truck-mounted crane 7 at the rear end, the track engineering vehicle 1 is provided with a hydraulic winch 4 at the front end, and a hydraulic excavator 3 is mounted at the rear end of the track engineering vehicle 1, the traction device is responsible for transmitting the traction and braking force of the locomotive, and ensures that the vehicle can start, accelerate, decelerate and stop smoothly, and the traction device and the buffer device both adopt the existing structure, which will not be repeated here; The bottom surface of the frame 1-1 of the track engineering vehicle 1 is provided with an axle box locking oil cylinder 9 corresponding to the upper and lower positions of the axle box end cover 5-1 in the wheel set axle box 5, the piston rod of the axle box locking oil cylinder 9 is retracted and moved up to separate from the axle box end cover 5-1 when the track engineering vehicle 1 is running, and when the track engineering vehicle 1 is working, the axle box locking oil cylinder 9 drives the axle box end cover 5-1 to move down and abut against the axle box end cover 5-1 to make the rigid connection of the wheel set 5-2 in the wheel set axle box 5 and the steel rail 11; The track engineering vehicle 1 is provided with a rotary support device 6 between the two sets of wheel set axle boxes 5, when the track engineering vehicle 1 needs to change direction during uncoupling, the piston rod of the axle box locking oil cylinder 9 is connected with the axle box end cover 5-1 through the connecting pin 8, and after the piston rod of the axle box locking oil cylinder 9 is retracted to drive the wheel set axle box 5 to move up, the track engineering vehicle 1 is lowered at the lower end to rotate and change direction under the rotation support of the rotary support device 6 connected with the steel rail 11 to prevent side slipping; The above structure can realize material transfer, traction, excavation and lifting simultaneously without the need for additional deployment equipment, and has the function of single-line driving direction reversing, solving the problem that the traditional track engineering vehicle 1 needs a special reversing line to adjust the direction due to the limitation of the track structure, providing convenience for single-line railway maintenance, tunnel construction and small operation interval space scenarios, reversing in place without the need for a special reversing line, breaking through the space limitation, reducing the difficulty of driving direction adjustment, and improving the operation efficiency; As Figures 5-7As shown, the rotary support device 6 includes a support assembly fixed to the bottom of the frame 1-1 of the track engineering vehicle 1 and an anti-skid support seat 6-7 located below the frame 1-1, which is rotatably connected to the fixed seat 6-4 above it through a rotary bearing 6-8, and the lifting device installed on the upper end surface of the fixed seat 6-4 is connected with the support assembly and drives the anti-skid support seat 6-7 to move up and down, realizing the separation or anti-skid adaptation of the anti-skid support seat 6-7 and the steel rail 11, and the anti-rotation locking device is rotatably installed on the support assembly and detachably connected with the anti-skid support seat 6-7 in the non-working state, at this time, the rotary support device 6 is suspended at the bottom of the frame 1-1 and is locked and positioned by the anti-rotation locking device; in the above structure, the structure of rotatably connecting the anti-skid support seat 6-7 and the fixed seat 6-4 through the rotary bearing 6-8 is arranged below the frame 1-1, which provides rotary support conditions for the reversing of the driving direction of the track engineering vehicle 1, and cooperates with the lifting device to drive the anti-skid support seat 6-7 to adapt to the anti-skid of the steel rail 11, realizing the reversing of the driving direction of the track engineering vehicle 1 in the working condition without a special turning line, solving the defect that the track engineering vehicle 1 is difficult to adjust the direction in the working condition without a special turning line in the prior art, and improving the operation efficiency; The specific structure of the lifting device is as follows: the lifting device includes two symmetrically arranged bidirectional oil cylinders 6-1, the upper ends of which are fixedly connected with the support assembly, and the lower ends of the piston rods of the bidirectional oil cylinders 6-1 are connected with the fixed seat 6-4 through a pin shaft; specifically, the fixed seat 6-4 includes an upper ring plate 6-43, a wear plate 6-42, and two upper seats 6-41 symmetrically fixed to the upper ring plate 6-43 in a slot-shaped hollow structure, the upper ring plate 6-43 is fixed to the upper end surface of the outer ring of the rotary bearing 6-8, and the inner ring of the rotary bearing 6-8 is fixedly connected with the anti-skid support seat 6-7, the piston rod of the bidirectional oil cylinder 6-1 extending into the inside of the upper seat 6-41 is connected with the middle part of the upper seat 6-41 through a pin shaft, and the wear plates 6-42 are fixed on the outer end surface and the inner side wall of the upper seat 6-41.

[0020] As Figures 8-10As shown, the support assembly includes fixed seat 6-5 and limit seat 6-9, the bottom of the frame 1-1 is fixed with two fixed seats 6-5 corresponding to the position of two double-acting cylinders 6-1 in the lifting device, and the upper end of the double-acting cylinder 6-1 adapted to the fixed seat 6-5 is fixedly connected with the fixed seat 6-5, four limit seats 6-9 are fixed on the bottom surface of the frame 1-1, and L-shaped limit plates 6-91 are fixed on the inner side wall of the limit seat 6-9. Two upper seats 6-41 in the fixed seat 6-4 are respectively located in the inner side of the limit seat 6-9 at the corresponding position, and the outer end surface and the inner side wall of the wear plate 6-42 are respectively in contact with the long side plate and the short side plate of the L-shaped limit plate 6-91; in the above structure, in the rotary support operation, the outer end surface and the inner side wall of the wear plate 6-42 are limited in the L-shaped limit plate 6-91 of the frame 1-1, the relative movement of the rotary support structure and the frame 1-1 is limited, and the safety and reliability is improved; As Figures 5-7 As shown, the anti-side-slip support seat 6-7 includes a lower ring plate 6-73, a channel steel 6-71 and a stop block 6-72, the lower ring plate 6-73 is fixedly connected with the outer ring of the rotary support 6-8, two channel steels 6-71 vertically arranged with the rail 11 are fixedly arranged on the bottom surface of the lower ring plate 6-73 in symmetry, and two stop blocks 6-72 fixed on the bottom surface of the channel steel 6-71 in the center symmetry are respectively located on the inner side of the same side rail 11; wherein the length of the channel steel 6-71 is greater than the gauge, when the piston of the double-acting cylinder 6-1 is extended, the channel steel 6-71 at the bottom of the lower ring plate 6-73 is pressed on the rail 11, and the stop block 6-72 located on the inner side of the rail 11 limits the side-slip of the structure on the rail surface; in the above structure, by arranging the anti-side-slip support seat 6-7 on the bottom surface of the base 6-71, the stop block 6-72 located on the inner side of the rail 11 when the anti-side-slip support seat 6-7 contacts with the rail 11, the lateral displacement of the track engineering vehicle 1 is limited during the reversing process, the side-slip is avoided, and the safety of the reversing process is ensured; The specific structure of the anti-rotation locking device is as follows: the anti-rotation locking device includes a hook 6-10 and an operating rod 6-6, the limit seat 6-9 in the support assembly is fixed with a mounting seat 6-2, and the middle part of the hook 6-10 is hingedly connected to the mounting seat 6-2, the upper end of the hook 6-10 is hingedly connected with one end of the operating rod 6-6, and the hook plate 6-3 fixed on the lower ring plate 6-73 of the anti-side-slip support seat 6-7 is hung with the lower end of the hook 6-10 in the non-working state of upward movement and suspension, and the separation of the hook 6-10 and the hook plate 6-3 is achieved by pulling the operating rod 6-6 outward; in the above structure, by rotating the hook 6-10 with the lower end hung with the hook plate 6-3 on the anti-side-slip support seat 6-7 on the limit seat 6-9, a locking and limiting condition is provided for the anti-side-slip support seat 6-7 in the non-working state, the stability and safety of the track engineering vehicle 1 in operation when the anti-side-slip support seat 6-7 is in the non-working state are improved, and the random rotation thereof is prevented; AsFigure 1 As shown, the track engineering vehicle 1 is provided with a rail grabber 10 corresponding to the upper and lower positions of the corresponding side rail 11 at each of the four corners of the bottom of the track engineering vehicle 1, and the rail grabber 10 is controlled to realize the downward movement of the rail grabber 10 to tightly embrace the rail 11 in the construction state of the track engineering vehicle 1 or the upward movement of the rail grabber 10 to separate from the rail 11 in the running state of the track engineering vehicle 1. The track engineering vehicle 1 is provided with a generator set 1-3 for the operation of the hydraulic system on the rear end platform of the track engineering vehicle 1. In the above structure, the rail grabber 10 is of an existing structure, and the lifting structure of the rail grabber 10 can adopt an existing oil cylinder driving structure, a motor driving screw rod control structure or a screw rod height adjusting structure, which will not be described here, As shown in the drawings, Figure 3 As shown, the air compressor 1-4 arranged at the bottom of the vehicle frame 1-1 is powered by the front end of the engine 1-5, and the rear end of the engine 1-5 is connected with the hydraulic torque converter 1-8 through the transmission shaft 1-6. The hydraulic torque converter 1-8 is connected with the hydraulic pump 1-7, and the hydraulic torque converter 1-8 is connected with the front and rear axle gear boxes 1-2 through the transmission shaft 2-9 at both ends. The power transmission layout can efficiently transmit the power of the engine 1-5, and at the same time meet the power demand of the air compressor 1-4, the hydraulic system and the axle driving, without the need to additionally set multiple power sources, thereby simplifying the equipment structure and reducing the energy consumption and maintenance cost.

[0021] As shown in the drawings, Figure 1 As shown, the track flat car 2 is supported by two bogies 2-2 arranged at the bottom of the vehicle frame 2-1. The vehicle frame 2-1 is fixed with a protective fence 2-3 at the front end and both sides of the upper edge position. The vehicle frame 2-1 is provided with a diesel generator set 2-4 and a crane hydraulic station 2-5 located at both sides of the mobile crane 7 at the rear end of the upper platform. The track flat car 2 is provided with a buffer device 2-6 and a traction device 2-7 at both ends. The arrangement of the above structure can improve the driving stability and safety of the track flat car 2, reduce the impact of the buffer device 2-6 during driving and docking, and ensure the reliable connection of the traction device 2-7 with the track engineering vehicle 1 or other equipment. On the other hand, the protective fence 2-3 at the front end and both sides of the vehicle frame 2-1 can protect the equipment and personnel on the vehicle, and the diesel generator set 2-4 and the crane hydraulic station 2-5 at the rear end can provide independent power for the mobile crane 7, ensure that the lifting operation is not affected by other systems, and improve the independence and efficiency of the operation.

[0022] The technical scheme has simple structure and reasonable design, does not need to transform the original wheel set structure of the track engineering vehicle 1, is suitable for the existing track engineering vehicle 1, the setting of the wear plate is beneficial to reduce the wear of parts, prolong the service life, reduce the maintenance cost, the track engineering vehicle integrates the hydraulic winch hoist, the hydraulic excavator, the track flat car carries the truck crane, and can simultaneously realize material transfer, traction, excavation, hoisting and other operations, does not need to allocate multiple single-function devices, and reduces the equipment cost and operation time consumption.

[0023] It is apparent to those skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments, and that the application can be implemented in other particular forms without departing from the spirit or essential characteristics of the application. The foregoing embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims to the features to which the reference signs are attached.

[0024] Furthermore, it should be understood that although the present specification is described in terms of embodiments, not every embodiment according to the present specification need necessarily include every independent technical feature mentioned in the specification, and that reference to a particular feature of the specification does not mean that every embodiment according to the present specification necessarily includes that particular feature. The description of the embodiments is merely exemplary in nature and is in no way intended to limit the application, its application, or products by the application.

Claims

1. A multi-functional rail engineering vehicle group with a reversing travel direction function, characterized in that: The system includes a track engineering vehicle (1) connected end to end and a track flatcar (2) equipped with a crane (7) at the rear end. The track engineering vehicle (1) is equipped with a hydraulic winch (4) at the front end and a hydraulic excavator (3) at the rear end. Both ends of the track engineering vehicle (1) are equipped with traction devices and buffer devices for absorbing and reducing the impact force generated by the vehicle during operation. The bottom surface of the frame (1-1) of the track engineering vehicle (1) is equipped with an axle box locking cylinder (9) corresponding to the upper and lower positions of the axle box end cover (5-1) in the wheel set axle box (5). The section is equipped with a slewing support device (6) located between two sets of wheel set axle boxes (5). When the track engineering vehicle (1) needs to change direction after uncoupling, the piston rod of the axle box locking cylinder (9) is connected to the axle box end cover (5-1) through the connecting pin (8). After the piston rod of the axle box locking cylinder (9) retracts and drives the wheel set axle box (5) to move upward, the track engineering vehicle (1) moves down to the slewing support device (6) which is adapted to the anti-side slip of the rail (11) and rotates to change direction. The length of the channel steel (6-71) at the bottom of the slewing support device (6) that contacts the rail (11) is greater than the gauge of the two rails (7).

2. The multi-functional rail engineering vehicle group with reversing travel direction function according to claim 1, characterized in that: The slewing support device (6) includes a support assembly fixed to the bottom of the frame (1-1) of the rail engineering vehicle (1) and an anti-slip support seat (6-7) located below the frame (1-1). The anti-slip support seat (6-7) is rotatably connected to the fixed seat (6-4) above it via a slewing bearing (6-8). A lifting device installed on the upper surface of the fixed seat (6-4) is connected to the support assembly and the lifting device drives the anti-slip support seat (6-7) to move up and down, thereby realizing the separation of the anti-slip support seat (6-7) from the rail (11) or anti-slip adaptation. The support assembly is rotatably equipped with an anti-rotation locking device whose lower end is detachably connected to the anti-slip support seat (6-7) in the non-working state.

3. The multi-functional rail engineering vehicle group with reversing travel direction function according to claim 2, characterized in that: The lifting device includes two symmetrically arranged bidirectional hydraulic cylinders (6-1). The upper end of the bidirectional hydraulic cylinder (6-1) is fixedly connected to the support assembly, and the lower end of the piston rod of the bidirectional hydraulic cylinder (6-1) is connected to the fixed seat (6-4).

4. The multi-functional rail engineering vehicle group with reversing travel direction function according to claim 3, characterized in that: The fixed seat (6-4) includes an upper ring plate (6-43), a wear plate (6-42), and two upper seats (6-41) with groove-shaped hollow structures symmetrically fixed on the upper ring plate (6-43). The upper ring plate (6-43) is fixed to the upper end face of the outer ring of the slewing bearing (6-8), and the inner ring of the slewing bearing (6-8) is fixedly connected to the anti-slip support seat (6-7). The piston rod of the lower end of the bidirectional oil cylinder (6-1) extends into the upper seat (6-41) and is connected to the middle of the upper seat (6-41) through a pin. Wear plates (6-42) are fixed on the outer end face and inner side wall of the upper seat (6-41).

5. The multi-functional rail engineering vehicle group with reversing travel direction function according to claim 2, characterized in that: The support assembly includes a fixed seat (6-5) and a limiting seat (6-9). Two fixed seats (6-5) are fixed at the bottom of the frame (1-1) and correspond to the positions of the two bidirectional hydraulic cylinders (6-1) in the lifting device. The upper end of the bidirectional hydraulic cylinder (6-1) adapted to the fixed seat (6-5) is fixedly connected to the fixed seat (6-5). Four limiting seats (6-9) are fixed on the bottom surface of the frame (1-1). An L-shaped limiting plate (6-91) is fixed on the inner side wall of the limiting seat (6-9). The two upper seats (6-41) in the fixed seat (6-4) are located at their respective ends inside the limiting seats (6-9). The wear plates (6-42) on the outer end face and inner side wall of the upper seat (6-41) are in contact with the long side plate and short side plate of the L-shaped limiting plate (6-91) respectively.

6. The multi-functional rail engineering vehicle group with reversing travel direction function according to claim 2, characterized in that: The anti-slip support seat (6-7) includes a lower ring plate (6-73), a channel steel (6-71), and a stop block (6-72). The lower ring plate (6-73) is fixedly connected to the outer ring of the slewing bearing (6-8). Two channel steels (6-71) are symmetrically fixed on the bottom surface of the lower ring plate (6-73) and are perpendicular to the rail (11). Two stop blocks (6-72) are symmetrically fixed on the bottom surface of the channel steel (6-71) and are located on the inner side of the rail (11) on the same side.

7. The multi-functional rail engineering vehicle group with reversing travel direction function according to claim 2, characterized in that: The anti-rotation locking device includes a hook (6-10) and an operating rod (6-6). A mounting base (6-2) is fixed on the limiting seat (6-9) in the support assembly, and the middle part of the hook (6-10) is hinged to the mounting base (6-2). The upper end of the hook (6-10) is hinged to one end of the operating rod (6-6). The hook plate (6-3) fixed on the lower ring plate (6-73) in the anti-slip support (6-7) is engaged with the lower end of the hook (6-10) in the corresponding position when it is in the non-working state of being suspended in the air. The hook (6-10) and the hook plate (6-3) are separated by pulling the operating rod (6-6) outward.

8. The multi-functional rail engineering vehicle group with reversing travel direction function according to claim 1, characterized in that: The bottom of the track engineering vehicle (1) is equipped with rail grippers (10) at the four corners, which correspond to the vertical positions of the corresponding side rails (11). By controlling the rail grippers (10), the rail grippers (10) can move down to grip the rails (11) when the track engineering vehicle (1) is in the construction state, or move up to separate from the rails (11) when the track engineering vehicle (1) is in the running state. The rear platform of the track engineering vehicle (1) is equipped with generator sets (1-3) for the hydraulic system.

9. The multi-functional rail engineering vehicle group with reversing travel direction function according to claim 1, characterized in that: The air compressor (1-4) installed at the bottom of the frame (1-1) takes power from the front end of the engine (1-5), and the rear end of the engine (1-5) is connected to the hydraulic gearbox (1-8) through the first drive shaft (1-6). The hydraulic gearbox (1-8) is connected to the hydraulic pump (1-7), and both ends of the hydraulic gearbox (1-8) are connected to the front and rear axle gearboxes (1-2) through the second drive shaft (1-9).

10. The multi-functional rail engineering vehicle group with reversing travel direction function according to claim 1, characterized in that: The rail flatcar (2) is supported by two bogies (2-2) located at the bottom of the frame two (2-1). The front end and upper edges of the frame two (2-1) are fixed with guardrails (2-3). The rear end of the platform of the frame two (2-1) is equipped with a diesel generator set (2-4) and a hydraulic station for the crane (7) located on both sides. The rail flatcar (2) is equipped with a buffer device (2-6) and a traction device (2-7) at both the front and rear ends.

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