A rail panel replacement machine

Abstract

The application discloses a track slab replacement machine, which comprises a vehicle frame, a first bogie and a second bogie connected with the vehicle frame, a first hoisting device arranged above the first bogie and a second hoisting device arranged above the second bogie. The track slab replacement machine adopts the arrangement form of the double hoisting devices, on one hand, the two hoisting devices can be independently operated and can be backup for each other in the independent operation, on the other hand, the two hoisting devices can be simultaneously operated and can expand the operation range and improve the operation efficiency in the simultaneous operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of railway engineering machinery, in particular to a track slab replacement machine. BACKGROUND

[0002] After the high-speed railway is put into operation, with the development of time, under the joint action of train load, external environment, and deformation of off-line foundation structure, the track slab has appeared cracks, bulging, spalling, and even map-like cracking and other damage forms, which seriously affect the stability and strength of the track structure. Therefore, the replacement and maintenance construction of the damaged track slab is needed to improve the line quality and ensure the safety of high-speed railway operation.

[0003] At present, the existing track slab replacement construction operation in China mainly uses the mode of "hoisting track vehicle + flat car" combined with small tools to complete the replacement of the track slab. The process is relatively complicated, the number of operating personnel is large, and the degree of mechanical automation is not high. In recent years, some construction units have also explored the construction technology of track slab replacement and developed high-speed railway ballastless track slab rapid replacement equipment. The equipment uses the "flat car + vehicle-mounted slab replacement main platform" slab replacement operation mode. The equipment basically meets the needs of field application, and 1-2 track slabs can be replaced in a single day window, which improves the degree of mechanization and operation efficiency to a certain extent. However, the existing hoisting track vehicle and rapid replacement equipment still have many problems: the single crane form is used, there is no fault emergency backup function, and the vehicle position needs to be moved when replacing continuous damaged track slabs, which is low in operation efficiency. The crane is in the form of a winch, and the flexible hoisting of the steel wire rope is limited in operation under the height limit of the catenary. The crane is prone to contact with the catenary or other line facilities, and the operation safety is low. The equipment can only realize adjacent line slab replacement operation. Although the rapid replacement equipment can realize on-line slab replacement operation, the equipment and the vehicle need to be separated, the operation is complex, the operation cycle is long, and there is a high safety risk. The equipment has no leg leveling function and cannot complete the slab replacement operation under large super-high operation conditions. The vehicle cannot be equipped with track slabs, and other tooling equipment needs to be replaced. SUMMARY

[0004] The purpose of the present application is to provide a track slab replacement machine. The track slab replacement machine adopts a double hoisting device arrangement form. On the one hand, the two hoisting devices can operate independently and serve as fault mode backups when operating independently. On the other hand, the two hoisting devices can operate simultaneously and expand the operation range when operating simultaneously, thereby improving the operation efficiency.

[0005] To achieve the above-mentioned purpose, the present application provides a track slab replacement machine, which comprises a vehicle frame, a first bogie and a second bogie connected to the vehicle frame, a first hoisting device arranged above the first bogie, and a second hoisting device arranged above the second bogie.

[0006] In some embodiments, the first hoisting device and / or the second hoisting device is a folding arm crane.

[0007] In some embodiments, the track panel replacing machine further comprises a first power system providing power source for the first hoisting device and a second power system providing power source for the second hoisting device.

[0008] In some embodiments, the track panel replacing machine further comprises a hydraulic system provided with cross oil supply pipelines in communication with the first hoisting device and the second hoisting device to realize that the first power system provides power source for the second hoisting device and the second power system provides power source for the first hoisting device.

[0009] In some embodiments, the vehicle frame is provided with lifting legs which can be supported on the roadbed after being extended and support the vehicle frame, the first bogie and the second bogie to be separated from the track surface after being supported.

[0010] In some embodiments, the first hoisting device and the second hoisting device are installed through a pin shaft, the first hoisting device and the second hoisting device can rotate around the pin shaft to adjust the angle, and a leveling oil cylinder providing adjustment power is connected to the first hoisting device and the second hoisting device.

[0011] In some embodiments, the end of the first hoisting device and the second hoisting device is provided with a track panel special sling, a track panel loading clamp is arranged between the first hoisting device and the second hoisting device on the flat surface of the vehicle frame, and the track panel loading clamp is installed on the corresponding installation interface reserved on the vehicle frame according to the specifications and models of the track panel.

[0012] In some embodiments, the first hoisting device and the second hoisting device can be remotely controlled by a remote controller, a camera is arranged on the track panel special sling, the camera can observe the status of the four clamps of the track panel special sling fixing the track panel and feed the influence signal to the remote controller.

[0013] In some embodiments, the track panel special sling is provided with a sensor which can record the path information of the track panel special sling and feed back to the remote controller, and the track panel special sling is controlled by the remote controller to realize automatic return of the replaced track panel through the memory path.

[0014] In some embodiments, the track panel loading clamp is provided with a first clamping body, a second clamping body and a third clamping body, the first clamping body and the third clamping body are used for longitudinal positioning of the track panel, and the second clamping body is used for transverse positioning of the track panel.

[0015] With respect to the above background, the track slab replacement machine provided by the present application comprises a vehicle frame, a first bogie and a second bogie connected to the vehicle frame, a first hoisting device arranged above the first bogie, and a second hoisting device arranged above the second bogie.

[0016] During the operation of the track slab replacement machine, the old track slab is removed and the new track slab is placed by the action of the hoisting devices, wherein the second hoisting device can operate or stop operating simultaneously with the operation of the first hoisting device, and the first hoisting device can operate or stop operating simultaneously with the operation of the second hoisting device, and the two are independent and do not affect each other. The track slab replacement machine adopts the arrangement form of double hoisting devices, on the one hand, the two hoisting devices can operate independently and serve as backup for each other when operating independently, and on the other hand, the two hoisting devices can operate simultaneously and expand the operation range and improve the operation efficiency when operating simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0018] Figure 1 The structure front view of the track slab replacement machine provided by the embodiment of the present application is provided.

[0019] Figure 2 The on-vehicle arrangement and adjacent line operation diagram of the track slab replacement machine provided by the embodiment of the present application is provided.

[0020] Figure 3 The off-vehicle arrangement diagram of the track slab replacement machine provided by the embodiment of the present application is provided.

[0021] Figure 4 The structure left view of the track slab replacement machine provided by the embodiment of the present application is provided.

[0022] Figure 5 The leveling structure diagram of the track slab replacement machine provided by the embodiment of the present application is provided.

[0023] Figure 6 The loading structure diagram of the track slab replacement machine provided by the embodiment of the present application is provided.

[0024] Figure 7 The track slab loading diagram of the track slab replacement machine provided by the embodiment of the present application is provided.

[0025] Figure 8 The main view of the on-line operation of the track slab replacement machine provided by the embodiment of the present application is provided.

[0026] Figure 9 The track panel replacement machine provided by the embodiment of the present application provides a main line operation diagram.

[0027] Wherein,

[0028] 1-first bogie, 2-car frame, 3-generator set, 4-lighting system, 5-second bogie, 6-floor and railing, 7-second diesel tank, 8-first power system, 9-first hoisting device, 10-track panel special sling, 11-track panel loading clamp, 12-second hoisting device, 13-second power system, 14-hand brake device, 15-end beam, 16-first diesel tank, 17-traction beam, 18-sleeper beam, 19-side beam, 20-middle beam, 21-cross beam, 22-braking system, 23-hydraulic system, 24-coupler lifting device, 25-coupler buffer device, 26-lifting leg, 27-pivot, 28-traction device, 29-hoisting clamp, 30-leveling oil cylinder, 31-first clamping body, 32-second clamping body, 33-third clamping body. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0031] Reference is made to Figures 1 to 9 Wherein, Figure 1 The track panel replacement machine provided by the embodiment of the present application provides a main line operation diagram. Figure 2 The track panel replacement machine provided by the embodiment of the present application provides a main line operation diagram. Figure 3 The track panel replacement machine provided by the embodiment of the present application provides a main line operation diagram. Figure 4 The track panel replacement machine provided by the embodiment of the present application provides a main line operation diagram. Figure 5 The track panel replacement machine provided by the embodiment of the present application provides a main line operation diagram. Figure 6 The track panel replacement machine provided by the embodiment of the present application provides a main line operation diagram. Figure 7 The track panel replacement machine provided by the embodiment of the present application provides a main line operation diagram. Figure 8 The track panel replacement machine provided by the embodiment of the present application provides a main line operation diagram. Figure 9The track slab replacement machine provided by the embodiment of the present application provides a line operation diagram.

[0032] In a first specific embodiment, the present application provides a track slab replacement machine, mainly comprising a vehicle frame 2, a first bogie 1 and a second bogie 5 connected to the vehicle frame 2, a first hoisting device 9 arranged above the first bogie 1, and a second hoisting device 12 arranged above the second bogie 5.

[0033] In the operation process of the track slab replacement machine, the old track slab is removed and the new track slab is placed by the action of the hoisting device. The second hoisting device 12 can operate simultaneously or stop operating when the first hoisting device 9 operates, and the first hoisting device 9 can operate simultaneously or stop operating when the second hoisting device 12 operates. The two hoisting devices are independent and do not affect each other.

[0034] The track slab replacement machine adopts a double-hoisting device arrangement. On the one hand, the two hoisting devices can operate independently and serve as backup for each other when operating independently. On the other hand, the two hoisting devices can operate simultaneously and expand the operation range and improve the operation efficiency when operating simultaneously.

[0035] For example, the present application specifically relates to a lifting operation vehicle for track slab replacement construction of high-speed railway ballastless track, which is applied to lifting and removing damaged track slabs and lifting and placing new track slabs in track slab replacement construction, and can also be used for lifting operation in maintenance of other high-speed railway lines.

[0036] It should be noted that the above-mentioned track slab replacement lifting operation vehicle does not have self-walking power. If self-walking power is required, a walking power system can be configured, which should belong to the scope of the description of the embodiment.

[0037] In some embodiments, the first hoisting device 9 and / or the second hoisting device 12 is a folding arm crane.

[0038] In the embodiment, the present application adopts a folding arm crane, which has functions such as telescoping, rotating, and pitching, and rigidly connects hoisting. The structure is compact, the operation is flexible and safe and reliable, and the rigid hoisting can realize position memory through a special lifting appliance, one-key coarse track slab paving function, which solves the problem of low safety of flexible hoisting operation and improves the operation efficiency.

[0039] For example, the first hoisting device 9 and the second hoisting device 12 are both folding arm cranes.

[0040] In some embodiments, the track slab replacement machine further comprises a first power system 8 for providing a power source for the first hoisting device 9 and a second power system 13 for providing a power source for the second hoisting device 12.

[0041] In the embodiment, the application adopts a double folding arm crane arrangement form, two folding arm cranes are symmetrically arranged at the front and rear ends of the vehicle, each crane is provided with an independent power system, the two cranes are backup for each other, and six CRTSI type damaged track plates can be replaced at one time under the premise that the vehicle is not moved, the original track crane has no fault backup function, the on-line operation does not need to additionally provide a track crane or other equipment as a backup vehicle, the operation efficiency is high, and the use cost is low.

[0042] Further, the track plate replacement machine further comprises a hydraulic system 23, the hydraulic system 23 is provided with cross oil supply pipelines in communication with the first lifting device 9 and the second lifting device 12, so as to realize that the first power system 8 provides a power source for the second lifting device 12 and the second power system 13 provides a power source for the first lifting device 9.

[0043] In the embodiment, in an initial state, the first power system 8 provides a power source for the first lifting device 9, and the second power system 13 provides a power source for the second lifting device 12, when one set of power system fails to provide a power source for the matched crane, the power system can be switched, and cross control of the power system on the crane is realized.

[0044] In a specific embodiment, the track crane mainly comprises a vehicle frame 2, a first bogie 1, a second bogie 5, a hook buffer device 25, a first lifting device 9, a second lifting device 12, a first power system 8, a second power system 13, a lighting system 4, a brake system 22, a hydraulic system 23, a floor and a guardrail 6 and the like.

[0045] The vehicle frame 2 is composed of an end beam 15, a traction beam 17, a bolster beam 18, a traction device 28, a side beam 19, a middle beam 20, a cross beam 21 and the like, and is a load-bearing structure of the whole vehicle.

[0046] The vehicle frame 2 is connected with the first bogie 1 and the second bogie 5 through the traction device 28; the vehicle frame 2 is provided with a vehicle hook lifting device 24 and a hook buffer device 25 at the front and rear ends and is provided with a train pipe connection interface; the first power system 8 and the second power system 13 are symmetrically arranged at the upper front and rear ends of the vehicle frame 2, the first lifting device 9 is arranged above the first bogie 1, and the second lifting device 12 is arranged above the second bogie 5; the second diesel tank 7, the first diesel tank 16, the generator set 3, two sets of hand brake devices 14, the brake system 22, the hydraulic system 23, a lifting clamp 29 and the lighting system 4 are arranged below the vehicle frame 2, the first diesel tank 16 provides fuel for the first power system 8 and the generator set 3, the second diesel tank 7 provides fuel for the second power system 13, and the lighting system 4 is powered by the two sets of power systems.

[0047] Further, the end of the first hoisting device 9 and the second hoisting device 12 is provided with a track plate special lifting appliance 10, and a track plate loading clamp 11 is arranged between the first hoisting device 9 and the second hoisting device 12 on the flat car frame 2, and the track plate loading clamp 11 is installed on the corresponding installation interface reserved on the car frame 2 according to the specifications and models of the track plate.

[0048] In the embodiment, the first hoisting device 9 and the second hoisting device 12 are in the form of a folding arm crane, and the track plate is rigidly connected by the track plate special lifting appliance 10 to complete hoisting. The track plate special lifting appliance 10 can simultaneously meet the hoisting operation of the CRTS I, II and III track plates, and has the functions of 360° full rotation, front-back amplitude adjustment, left-right transverse movement, left-right leveling, vertical lifting and locking grabbing.

[0049] Further, the first hoisting device 9 and the second hoisting device 12 can be remotely controlled by a remote controller.

[0050] In the embodiment, the rotation, leveling, lifting, locking, amplitude variation and transverse movement of the track plate special lifting appliance 10, and the extension, amplitude variation and rotation of the hoisting arm of the first hoisting device 9 and the second hoisting device 12 have remote control and remote operation functions, which are convenient for the operator to operate off the vehicle. A camera is arranged on the track plate special lifting appliance 10, which can observe the status of the four clamps at any time and feed back the image signal to the remote controller. The first hoisting device 9 and the second hoisting device 12 have two working conditions of contact network and non-contact network, and the first hoisting device 9 and the second hoisting device 12 are provided with a lifting height limiting device and an alarm function in the contact network working condition.

[0051] Further, the track plate special lifting appliance 10 is provided with a sensor, which can record the path information of the track plate special lifting appliance 10 and feed back to the remote controller, so that the track plate special lifting appliance 10 can automatically return to the original position of the damaged track plate through the memory path after replacement.

[0052] In the embodiment, the first hoisting device 9 and the second hoisting device 12 in combination with the track plate special lifting appliance 10 can remember the initial position of the damaged track plate through the sensor, and the new track plate can automatically return to the original position through the memory path, so as to complete the rough laying of the new track plate. During the operation, the crane of the hoisting vehicle can complete the off-site operation of the old track plate and the in-site operation of the new track plate through rotation and extension, so as to complete the adjacent track plate replacement operation.

[0053] Further, the track plate loading clamp 11 is provided with a first clamping body 31, a second clamping body 32 and a third clamping body 33, the first clamping body 31 and the third clamping body 33 are used for longitudinal positioning of the track plate, and the second clamping body 32 is used for transverse positioning of the track plate.

[0054] In the embodiment, the track plate loading clamp 11 is arranged in the middle of the frame 2 of the hoisting operation vehicle, and has three structural forms. The first and third clamping bodies 31 and 33 are mainly used for positioning the track plate in the longitudinal direction, and the second clamping body 32 is mainly used for positioning the track plate in the transverse direction. The shapes of the track plates CRTS I, CRTS II and CRTS III are quite different. The installation position of the first clamping body 31 on the frame 2 is adjusted according to the type of the track plate pre-placed on the vehicle. The loading clamp 11 is designed with rubber pads with adjustable thickness for adjusting the positioning gap of the track plate. Finally, the track plate placed on the vehicle is bidirectionally constrained.

[0055] Based on the above, the present application solves the problem that the equipment required for other track plate replacement construction cannot be configured.

[0056] In some embodiments, the frame 2 is provided with lifting legs 26 which can be supported on the roadbed after being extended and support the frame 2, the first bogie 1 and the second bogie 5 to be separated from the rail surface after being supported.

[0057] Please continue to refer to Figure 2 The hoisting operation vehicle is used for adjacent line track plate replacement operation. When operating, the hoisting operation vehicle is parked on the adjacent line, the vehicle is parked through the hand brake device 14, then the lifting legs 26 are extended to both sides and then supported on the roadbed, and the first lifting device 9 and the second lifting device 12 can simultaneously perform track plate replacement operation. Once parked, a maximum of 6 CRTS I type track plates can be lifted.

[0058] Please continue to refer to Figure 8 and Figure 9 The hoisting operation vehicle can also be used for track plate replacement operation on the line. When operating, the hoisting operation vehicle is parked at the operation point, the vehicle is parked through the hand brake device 14, then the total of 8 lifting legs 26 are extended to both sides and then supported on the roadbed, the frame 2 is supported, the frame 2 is connected with the first bogie 1 and the second bogie 5 through the traction device 28, all the wheels can be separated from the rail surface by about 100 mm, the rail is pushed away, the hoisting operation vehicle is rotated to the rear of the vehicle with the supporting crane, the old track plate is removed and the new track plate is placed, thereby completing the track plate replacement operation on the line.

[0059] Based on the above, the hoisting operation vehicle of the present application can be used for operation on the line and adjacent line operation without disassembling the equipment, thereby solving the problems of complicated adjacent line track plate replacement process, inconvenient operation and high labor intensity.

[0060] In some embodiments, the first lifting device 9 and the second lifting device 12 are installed through the pin shaft 27, the first lifting device 9 and the second lifting device 12 can rotate around the pin shaft 27 to adjust the angle, and the first lifting device 9 and the second lifting device 12 are connected with the leveling oil cylinder 30 which provides adjustment power.

[0061] Please continue to refer to Figure 5 When the crane vehicle is parked at the working point in the section with a rail height difference of 175mm between the inner and outer sides of the curve super-elevation, two sets of hand brake devices 14 are pulled up, the lifting cylinder 30 is extended or retracted, the crane is rotated around the pin shaft 27 to the horizontal state, at this time, the lifting legs 26 are in the vertical state with the roadbed, the lifting legs 26 are extended to the two sides and then supported on the roadbed, and the track slab replacement operation in the curve super-elevation working condition can be performed. In the vehicle running state, the leveling device is reset and has a mechanical locking function.

[0062] Based on the above, the super-elevation leveling device is arranged in the application, and the super-elevation working condition can be leveled and then the lifting operation is performed, so that the operation working condition is more perfect and the safety is higher.

[0063] Finally, the track slab replacement machine provided by the application, i.e., the lifting vehicle for the track slab replacement construction of the high-speed railway ballastless track, mainly solves the problems of low replacement operation efficiency, poor safety and poor adaptability of the operation section of the existing track slab, and at least has the following characteristics: the application adopts a double-folding-arm crane arrangement form, each crane is configured with an independent power system, the two cranes are backup for each other in the fault mode, and the two cranes can operate simultaneously, thereby expanding the operation range and improving the operation efficiency; the application adopts a folding-arm crane, which is rigidly connected for lifting, has the advantages of compact structure, flexible operation, safety and reliability, etc., and can realize initial position memory through a special lifting appliance, the path is reversible, and the track slab can be roughly laid by one key; the track slab replacement of the application can be realized by the cooperation of the two cranes to exchange the new and old slabs, and the two cranes can operate simultaneously to improve the replacement efficiency when multiple track slabs are replaced in the adjacent line; the folding-arm crane of the application is provided with a follow-up leveling mechanism, which can keep the track slab in real-time horizontal state during lifting, can adapt to the outer rail super-elevation working condition, and has higher operation safety; the folding-arm crane of the application has an initial position memory function, can realize one-key positioning of the new track slab, has a horizontal small displacement, small angle and other positioning position fine adjustment functions, and realizes rough laying of the track slab; the application integrates the track slab loading clamp, the construction lighting system, other small hydraulic tools and the AC power interface, optimizes the construction organization, and simplifies the construction process.

[0064] It should be noted that many components mentioned in the application are general standard components or components known by those skilled in the art, and their structures and principles can be known by the technical personnel through technical manuals or obtained through conventional experimental methods.

[0065] It should be noted that in the present specification, the relationship terms such as first and second are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between the entities.

[0066] The track panel replacement machine provided by the present application is described in detail above. The principles and implementation manners of the present application are described by applying specific examples, and the above description of the examples is only used to help understand the method of the present application and the core idea thereof. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A rail panel replacement machine characterized by, The crane frame, the first bogie and the second bogie are connected, the first hoisting device is arranged above the first bogie, and the second hoisting device is arranged above the second bogie; The first hoisting device and the second hoisting device are backup for each other in failure mode and can operate simultaneously to expand the operation range; The crane frame is provided with lifting legs, the lifting legs can be supported on the roadbed after being extended to the sides and support the crane frame, the first bogie and the second bogie after being supported to be separated from the rail surface; After the vehicle is parked by the hand brake device, the lifting legs are driven to extend to the sides and then are supported on the roadbed, the crane frame is supported, the crane frame is connected with the first bogie and the second bogie through a traction device, and all the wheels are separated from the rail surface to perform the off-site of the old track plate and the on-site of the new track plate; The first hoisting device and the second hoisting device are installed through a pin shaft, the first hoisting device and the second hoisting device can rotate around the pin shaft to adjust the angle, and the first hoisting device and the second hoisting device are connected with a leveling oil cylinder for providing adjustment power; When the crane is parked at the operation point after operating on the curve super-elevation road section, the two sets of hand brake devices are pulled up, the leveling oil cylinder can make the crane rotate around the pin shaft to the horizontal state, the lifting legs are in the vertical state with the roadbed, and the lifting legs can extend to the sides and then are supported on the roadbed to perform the track plate replacement operation in the curve super-elevation working condition.

2. The rail panel replacement machine of claim 1, wherein, The first hoisting device and / or the second hoisting device is a folding arm crane.

3. The rail panel replacement machine of claim 2, wherein, A first power system for providing the power source for the first hoisting device and a second power system for providing the power source for the second hoisting device are further included.

4. The rail panel replacement machine of claim 3, wherein, A hydraulic system is further included, the hydraulic system is provided with cross oil supply pipelines in communication with the first hoisting device and the second hoisting device to realize that the first power system provides the power source for the second hoisting device and the second power system provides the power source for the first hoisting device.

5. The rail panel replacement machine of claim 1, wherein, Track plate special hangers are installed at the ends of the first hoisting device and the second hoisting device, a track plate loading clamp is arranged between the first hoisting device and the second hoisting device on the plane of the crane frame, and the track plate loading clamp is installed on the corresponding installation interface reserved on the crane frame according to the specifications and models of the track plates.

6. The rail panel replacement machine of claim 5, wherein, The first hoisting device and the second hoisting device can be remotely controlled by a remote controller, a camera is arranged on the track plate special hanger, the camera can observe the conditions of the four clamps of the track plate special hanger for fixing the track plate and feed the influence signals to the remote controller.

7. The track slab replacement mechanism according to claim 6, characterized in that, The track plate special hanger is provided with a sensor, the sensor can record the path information of the track plate special hanger and feed back to the remote controller, the track plate special hanger is controlled by the remote controller to realize the automatic return of the replaced track plate through the memory path.

8. The track slab replacement mechanism according to claim 5, characterized in that, The track panel loading fixture is provided with a first clamping body, a second clamping body and a third clamping body, the first clamping body and the third clamping body are used for longitudinal positioning of the track panel, and the second clamping body is used for transverse positioning of the track panel.

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