Ballastless track bearing platform milling and grinding vehicle

Abstract

The application provides a ballastless track bearing platform milling and grinding vehicle, which comprises a flat car and a working system, the working system comprises: a bearing frame which is detachably installed on the flat car through a detachable connecting device; at least one self-walking working device which is detachably connected above the bearing frame; and a hoisting device which is fixed on the bearing frame and used for hoisting and lowering the working device between the bearing frame and a line; wherein the upper end of the detachable connecting device is connected with the bearing frame, and the lower end of the detachable connecting device is connected with the flat car. The ballastless track bearing platform milling and grinding vehicle can hoist the working device above the bearing frame through the hoisting device and lower the working device to the line for work when the working device is needed to work, and can lower the working device on the line back to the bearing frame through the hoisting device after the working device finishes work.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of maintenance of ballastless track, in particular to a ballastless track bearing platform milling and grinding vehicle. BACKGROUND

[0002] High-speed trains are highly sensitive to TQI (Track Quality Index) values when they are running normally on the line, so high-speed railways have high requirements for factors affecting TQI values such as track elevation, track alignment, track gauge, level, and triangular pits. A too large TQI value is very unfavorable for the safety of high-speed trains. After the settlement or arching of the subgrade, the TQI value of the high-speed railway will be affected. After the TQI value changes, it is necessary to maintain and repair the high-speed railway to restore the TQI value, which is a necessary means to ensure the safety of high-speed trains.

[0003] Due to the long-time operation of high-speed railways after their construction, the railway line will have different degrees of diseases, which will cause changes in the track quality index value. In the case that the track quality caused by the track slab arching disease cannot meet the normal operation requirements of high-speed trains, the bearing platform needs to be treated to ensure that the treated bearing platform can meet the track quality requirements of high-speed train operation. In the case of small amount of settlement and arching leading to changes in the track quality index value, the track quality index value can be restored by adjusting the rail fastening system to ensure the safety of train operation. For sections with a large amount of arching, the adjustment range of the rail fastening system has been exceeded. The current maintenance methods are track slab reconstruction method and tunnel arch reconstruction method. The specific construction method is to remove the track bed slab and subgrade below the rail and to newly make the subgrade and track bed slab inside the tunnel to restore the track line quality index value. However, both of these two construction methods have the disadvantages of long construction period, many construction personnel, great construction organization difficulty, high labor intensity of personnel operation, high maintenance cost, etc. Moreover, they cannot complete the maintenance and repair work in the window point. This reconstruction construction method cannot meet the requirements of high-efficiency, fast, high degree of mechanization, etc. of the maintenance construction management of high-speed railway ballastless track in the window.

[0004] The existing patent CN111549596A is a railway rail installation groove online polishing construction method, which comprises the following steps: determining the length of the line adjustment section according to the disease condition and position; measuring the rail temperature; the rail installation groove milling and grinding vehicle arrives at the scene; the milling operation and dust suction operation are completed at one time according to the milling amount; the milling operation of all sleeper positions within the coverage range of the rail installation groove milling and grinding vehicle guide shaft is automatically completed according to the milling amount instruction set by the control system; the device needs to be configured with a corresponding milling cutter for milling operation when in use, which increases the labor intensity of the workers, the patent CN111719360A is a milling and grinding device for eliminating the arch disease on the railway sleeper, which comprises a processing cutter head for milling and grinding the sleeper, a cutter head rotating driving device for driving the processing cutter head to rotate, and a cutter head moving driving mechanism for driving the processing cutter head to move, the cutter head rotating driving device drives the processing cutter head to rotate to mill and grind the profile surface of the sleeper, the processing mode is relatively single, and the processing precision is low, the patent CN213380236U is a sleeper milling and grinding equipment, which comprises a moving frame and two processing mechanisms arranged on the moving frame and used for milling and grinding the sleeper; the moving frame is lifted by four jacking driving devices respectively, so that the moving frame is adjusted to be parallel to the reference horizontal plane, the side wall of the abutment plate is abutted against and abutted against the side wall of the track bed, and then the sleeper is milled and ground, the device does not have a water source, and a water source needs to be connected separately during construction, the construction period is long, and the construction organization difficulty is great. SUMMARY

[0005] In order to solve one of the above technical defects, a ballastless track bearing rail platform milling and grinding vehicle is provided in the embodiments of the present application.

[0006] According to the embodiments of the present application, a ballastless track bearing rail platform milling and grinding vehicle is provided, which comprises a flat car and a working system, the working system comprises:

[0007] A bearing frame is detachably mounted on the flat car through a detachable connecting device;

[0008] At least one self-propelled working device is detachably connected above the bearing frame;

[0009] A lifting device is fixed on the bearing frame and used for lifting and placing the working device between the bearing frame and the line;

[0010] The upper end of the detachable connecting device is connected with the bearing frame, and the lower end of the detachable connecting device is connected with the flat car.

[0011] In the implementation, the working device comprises:

[0012] One milling device and one grinding device;

[0013] Or two milling devices;

[0014] or two grinding devices.

[0015] In an embodiment, the detachable connecting device comprises:

[0016] a welding seat fixed outside the carrying frame;

[0017] a U-shaped lock hook plate assembly for hooking the lower flange of the I-beam of the side beam of the flat car;

[0018] a bolt and a nut, the bolt passing through the screw holes reserved in the welding seat and the U-shaped lock hook plate assembly and being locked by the nut.

[0019] In an embodiment, the U-shaped lock hook plate assembly comprises:

[0020] a U-shaped lock hook, the bottom plate of the U-shaped lock hook being longer than the top plate of the U-shaped lock hook;

[0021] a lower bottom plate fixed inside the bottom plate of the U-shaped lock hook;

[0022] an upper bottom plate fixed inside the top plate of the U-shaped lock hook;

[0023] wherein the bolt passes through the screw holes reserved in the welding seat and the bottom plate of the U-shaped lock hook and is locked by the nut.

[0024] In an embodiment, the working system further comprises:

[0025] a cooling water system fixedly connected to the upper middle part of the carrying frame;

[0026] wherein two working devices are respectively located at the two ends of the cooling water system, one of which is a front-end working device located at the front end of the carrying frame above, and the other is a rear-end working device, and the hoisting device is fixed between the cooling water system and the front-end working device.

[0027] In an embodiment, the working system further comprises:

[0028] a generator set fixed to the rear end of the carrying frame above, the rear-end working device being located between the generator set and the cooling water system, and the generator set providing necessary power supply for the whole vehicle working;

[0029] wherein the front-end working device is a milling device, and the rear-end working device is a grinding device.

[0030] In an embodiment, the hoisting device is a straight-arm hydraulic telescopic hoisting device, which can realize 360° rotation in the horizontal plane and has a small-range elevation function.

[0031] In implementation, the work system further comprises:

[0032] A pipeline winding and unwinding device is fixedly installed on the bearing frame, and is located at the side of the cooling water system.

[0033] In implementation, the pipeline winding and unwinding device is provided with at least one water pump input interface and at least one cooling water output interface, and is provided with at least one power input interface and at least one power output interface.

[0034] In implementation, the work system further comprises:

[0035] An electrical system is used to control the power supply of the generator set to the work device, the power supply of the water pump of the cooling water system, the tightening and release of the pipeline winding and unwinding device, the whole vehicle lighting and the whistle.

[0036] The ballastless track bearing platform milling and grinding vehicle provided in the embodiment of the application can perform milling and grinding work on the ballastless track bearing platform. Through online milling and grinding treatment of the bearing platform, the geometric parameters of the ballastless track line can be adjusted to meet the demand of normal operation of high-speed trains. The work efficiency is high, the work quality is good, the number of construction workers is small, the construction period is short, and the construction cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings, which are included to provide a further understanding of the application and constitute a part of this application, illustrate certain illustrative embodiments of the application and together with the description serve to explain the application. In the drawings:

[0038] Figure 1 The overall structure schematic diagram provided for the embodiment of the application;

[0039] Figure 2 The overall structure working state top view schematic diagram provided for the embodiment of the application;

[0040] Figure 3 The milling device schematic diagram provided for the embodiment of the application;

[0041] Figure 4 The hoisting device schematic diagram provided for the embodiment of the application;

[0042] Figure 5 The cooling water system schematic diagram provided for the embodiment of the application;

[0043] Figure 6 The pipeline winding and unwinding device schematic diagram provided for the embodiment of the application;

[0044] Figure 7 The end surface schematic diagram provided for the embodiment of the application, in which the bearing frame and the flat car are connected through detachable connecting devices.

[0045] Figure 8 A side view showing the connection between the load-bearing frame and the flatcar provided in this embodiment of the application via a detachable connecting device;

[0046] Figure 9 A schematic diagram showing the connection between the load-bearing frame and the flatcar provided in this embodiment of the application via a detachable connecting device;

[0047] Figure 10 This is a schematic diagram of the detachable connection device provided in an embodiment of this application.

[0048] Numbers in the diagram: 1-Flatcar, 1-01-Side beam of flatcar, 2-Milling device, 3-Grinding device, 4-Lifting device, 5-Generator set, 6-Cooling water system, 7-Electrical system, 8-Pipeline take-up and drop device, 9-Bearing frame, 91-Side beam of bearing frame, 10-Detachable connection device, 101-U-shaped lock hook plate assembly, 102-Welding seat, 103-Bolt, 104-Nut, 105-Lower base plate, 106-Upper base plate, 107-U-shaped groove, 108-Welding surface of welding seat. Detailed Implementation

[0049] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0050] In the process of realizing this application, the inventors discovered that the existing technology has disadvantages such as long construction period, large number of construction personnel, great difficulty in construction organization, high labor intensity of personnel operation, and high maintenance cost. Moreover, the implementation of the maintenance plan will affect the normal operation of trains.

[0051] To address the aforementioned problems, this application provides a ballastless track bearing milling and grinding machine, such as... Figures 1-6 As shown, it includes a flatcar 1 and a working system, the working system comprising:

[0052] The supporting frame 9 is detachably mounted on the flatcar 1 via a detachable connecting device 10;

[0053] At least one self-propelled working device is detachably connected above the support frame 9;

[0054] The lifting device 4 is fixed on the bearing frame 9 and is used to hoist the working device between the bearing frame 9 and the line.

[0055] The upper end of the detachable connecting device 10 is connected with the bearing frame 9, and the lower end of the detachable connecting device 10 is connected with the flat car 1.

[0056] Each working device has self-walking and braking and self-guiding functions.

[0057] The ballastless track bearing platform milling and grinding vehicle of the embodiment of the application can hoist the working device on the bearing frame by the hoisting device and place the working device on the track for work when the working device needs to work, and can place the working device on the track back to the bearing frame by the hoisting device after the working device finishes work. The working device itself has self-walking and braking and self-guiding functions and can walk, brake and guide on the track to work.

[0058] As shown in Figure 1 , the bearing frame 9 is detachably mounted on the flat car 1 through the detachable connecting device 10, that is, the bearing frame 9 can be detached from the flat car 1. In this way, the working system and the flat car can be detached and mounted.

[0059] In the implementation, as shown in Figure 1 , the working device includes:

[0060] a milling device 2 and a grinding device 3, and a hoisting device 4 for hoisting the milling device 2 and the grinding device 3 on the ballastless track to work;

[0061] or two milling devices 2;

[0062] or two grinding devices 3.

[0063] The milling device 2 is arranged at the front end of the bearing frame and serves as the front-end working device of the vehicle. The milling device 2 can be hoisted on the ballastless track of the adjacent line or the current line by the self-provided hoisting device 4 of the vehicle to work. The milling device 2 has self-walking and self-braking functions after obtaining electric energy and can realize walking, positioning, alignment, work and other functions under remote control. The milling device 2 has four adjustment degrees of freedom, that is, displacement in the horizontal direction, the vertical direction and the longitudinal direction and A-axis rotation, can realize first large-amount profiling milling work on the ballastless track, and ensures work quality and work efficiency.

[0064] The grinding device 3 is arranged at the rear end of the bearing frame and serves as the rear-end working device of the vehicle. The grinding device 3 has self-walking and self-braking functions after obtaining electric energy and can realize walking, positioning, alignment, work and other functions under remote control. The grinding device 3 has four adjustment degrees of freedom, that is, displacement in the horizontal direction, the vertical direction and the longitudinal direction and A-axis rotation, can realize second small-amount and high-precision profiling grinding work on the ballastless track, and ensures work quality and work efficiency.

[0065] The working device can work in various forms, and the milling device 2 and the grinding device 3 work in different combinations, such as milling+milling, milling+grinding, or grinding+grinding.

[0066] In the implementation, as shown in Figures 7-10 The detachable connecting device 10 comprises:

[0067] The welding seat 102 is fixed on the outer side of the carrying frame 9, that is, the welding seat 102 is fixed on the outer side of the edge beam 91 of the carrying frame through the welding seat welding surface 108;

[0068] The U-shaped lock hook plate assembly 101 is used to hook the lower wing edge of the I-shaped beam of the side beam 1-01 of the flat car;

[0069] The bolt 103 passes through the screw hole reserved in the welding seat 102 and the U-shaped lock hook plate assembly 101, and is locked by the nut 104.

[0070] The welding seat is fixed on the outer side of the carrying frame, the U-shaped lock hook plate assembly hooks the flat car, the bolt passes through the screw hole reserved in the welding seat and the U-shaped lock hook plate assembly to realize the connection of the welding seat and the U-shaped lock hook plate assembly, and finally the nut is locked to realize the detachable connection of the carrying frame and the flat car through the detachable connecting device.

[0071] Specifically, the upper wing edge of the I-shaped beam is fixedly connected to the lower bottom surface of the side beam 1-01 of the flat car. In this way, the lower wing edge of the I-shaped beam is connected to the U-shaped lock hook plate assembly 101.

[0072] In the implementation, as shown in Figures 8-10 The U-shaped lock hook plate assembly 101 comprises:

[0073] The U-shaped lock hook, the bottom plate of the U-shaped lock hook is longer than the top plate of the U-shaped lock hook;

[0074] The lower bottom plate 105 is fixed on the inner side of the bottom plate of the U-shaped lock hook;

[0075] The upper bottom plate 106 is fixed on the inner side of the top plate of the U-shaped lock hook;

[0076] The bolt 103 passes through the screw hole reserved in the welding seat 102 and the bottom plate of the U-shaped lock hook, and is locked by the nut.

[0077] The U-shaped lock hook, the lower bottom plate 105 and the upper bottom plate 106 are fixed on the inner side of the bottom plate of the U-shaped lock hook and the inner side of the top plate of the U-shaped lock hook respectively, forming a U-shaped groove 107. The existence of the lower bottom plate and the upper bottom plate makes the contact area with the lower flange of the I-shaped beam of the side beam of the flat car larger, and the installation is more firm. The bottom plate of the U-shaped lock hook is longer than the top plate of the U-shaped lock hook, so that the bottom plate of the U-shaped lock hook provides sufficient space for the installation of the bolt and the nut.

[0078] In the present application, as shown in Figure 1 The work system further comprises:

[0079] The cooling water system 6 is fixedly connected to the upper middle part of the bearing frame; the cooling water system 6 is composed of a water storage tank, a water pump, a water replenishing pump and the like, wherein the water storage tank is provided with a water level gauge, a plurality of water injection ports, a top cover, a plurality of water discharge ports, a filter, an observation port and a staircase and the like;

[0080] Among them, two work devices are respectively located at both ends of the cooling water system, one of which is a front-end work device located at the front end of the upper part of the bearing frame, and the other is a rear-end work device. The hoisting device 4 is fixed between the cooling water system 6 and the front-end work device. That is, the two work devices are respectively located on both sides of the hoisting device.

[0081] In this way, the two work devices are relatively dispersed in the position between the bearing frame, and the hoisting device can hoist and place the front-end work device from the front end of the bearing frame, and can hoist and place the rear-end work device from the rear end of the bearing frame.

[0082] In the present application, as shown in Figure 1 The work system further comprises:

[0083] The generator set 5 is fixed to the rear end of the upper part of the bearing frame, and the rear-end work device is located between the generator set 5 and the cooling water system 6. The generator set 5 provides the necessary power supply for the whole vehicle work.

[0084] Among them, the front-end work device is a milling device 2, and the rear-end work device is a grinding device 3.

[0085] As an optional way, the front-end work device is a grinding device 3, and the rear-end work device is a milling device 2.

[0086] In the present application, the hoisting device 4 adopts a straight-arm hydraulic telescopic type hoisting device, which can realize 360° rotation in the horizontal plane and has a small range of elevation angle function.

[0087] In the present application, as shown in Figure 1As shown, the work system further comprises a pipeline winding and unwinding device 8 fixedly installed on the bearing frame 9, the pipeline winding and unwinding device 8 is located on the side of the cooling water system 6, the pipeline winding and unwinding device 8 is an integrated structure independently arranged by an electrical slip ring and a rotary joint, can realize the winding and unwinding of the cable and the water pipe by driving a motor + speed reducer device, can provide uninterrupted water supply and power supply during the winding and unwinding process, and adopts a quick plug connector for connection at the connection with the device, facilitating quick disassembly and assembly.

[0088] In the present application, at least one water pump input interface and at least one cooling water output interface are arranged on the pipeline winding and unwinding device 8, at least one power input interface and at least one power output interface are arranged on the pipeline winding and unwinding device 8, the input interface does not rotate with the rotation of the device, and the output interface rotates with the rotation of the device.

[0089] In the implementation, the pipeline winding and unwinding device 8 is an integrated structure independently arranged by an electrical slip ring and a rotary joint.

[0090] In the present application, as shown, Figure 1 The work system further comprises:

[0091] An electrical system 7 is arranged on the opposite side of the cooling water system 6 to the control pipeline winding and unwinding device 8, the electrical system 7 is used for controlling the power supply of the generator set 5 to the milling device 2 and the grinding device 3, controlling the power supply of the water pump of the cooling water system 6, controlling the winding and unwinding of the pipeline winding and unwinding device 8, controlling the lighting and whistle of the whole vehicle.

[0092] The flat car 1 serves as a bearing main body and has a bogie, a car body, a braking system, a car coupler buffer device and the like, and can provide a necessary bearing body and a basic platform for the transportation and work of the car. When the car is attached for return transport, the flat car 1 serves as a bearing body of the whole set of equipment and can conveniently transfer the whole set of equipment. When the car is used for work, the railway flat car 1 serves as a basis for construction organization and is in a parked state, maintains normal grounding, and provides a necessary basic material for the whole work. The flat car 1 can realize railway transportation, and after the flat car 1 is removed, the whole set of equipment can be hoisted and transferred, can realize highway transportation, and is suitable for complex and variable transportation and work conditions.

[0093] The car does not have self-propelled capability, needs to be towed to a designated position of a disease section by a rail car during work, and uses a self-provided hoisting device to respectively hoist and place the milling device and the grinding device on an adjacent line or the line.

[0094] The present application comprises a flat car, a bearing frame, a milling device, a grinding device, a hoisting device, a pipeline winding and unwinding device, a generator set, an electrical system, a cooling water system, wherein the milling device and the grinding device can be arbitrarily replaced and recombined into a work system combination form of milling + grinding or grinding + grinding.

[0095] The application can be maintained and repaired online, and construction is carried out in the skylight point. The power required for the operation is provided by the generator set, and the pressure water required for the operation is provided by the cooling water system. When the milling device and the grinding device perform the operation, the cable and the water pipe are reeled in and out by the pipeline reeling device, and the operation is provided with sustainable electric energy and pressure water.

[0096] In the description of the application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the 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 application.

[0097] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0098] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0099] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0100] Obviously, those skilled in the art can make various modifications and variations 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 also intends to include these modifications and variations.

Claims

1. A ballastless track bearing platform milling and grinding vehicle, characterized in that, The invention relates to a ballastless track rail milling and grinding vehicle comprising a flat car and a working system, wherein the working system comprises: a carrying frame (9) mounted on the flat car through detachable connecting devices; at least one self-propelled working device detachably connected above the carrying frame; a lifting device (4) fixed on the carrying frame for hoisting the working device between the carrying frame and the track; wherein the upper end of the detachable connecting device is connected with the carrying frame and the lower end of the detachable connecting device is connected with the flat car; the detachable connecting device comprises: a welding seat fixed on the outer side of the carrying frame (9); a U-shaped lock hook plate assembly for hooking the lower wing edge of the I-beam of the side beam of the flat car; a bolt and a nut, the bolt passing through the screw holes reserved in the welding seat and the U-shaped lock hook plate assembly and being locked by the nut; the U-shaped lock hook plate assembly comprises: a U-shaped lock hook, the bottom plate of the U-shaped lock hook being longer than the top plate of the U-shaped lock hook; a lower bottom plate fixed on the inner side of the bottom plate of the U-shaped lock hook; an upper bottom plate fixed on the inner side of the top plate of the U-shaped lock hook; wherein the bolt passes through the screw holes reserved in the welding seat and the bottom plate of the U-shaped lock hook and is locked by the nut; the working device comprises: one milling device (2) and one grinding device (3); or two milling devices (2); or two grinding devices (3); the milling device (2) and the grinding device (3) have self-propelled and braking and self-guiding functions after being powered on, can walk, brake and guide on the track and have the functions of rail milling and grinding.

2. The ballastless track bearing platform milling and grinding vehicle according to claim 1, characterized in that, the working system further comprises: a cooling water system (6) fixedly connected above the middle part of the carrying frame; wherein the two working devices are respectively located at the two ends of the cooling water system, one of the working devices is a front-end working device located at the front end above the carrying frame and the other working device is a rear-end working device, and the lifting device (4) is fixed between the cooling water system (6) and the front-end working device.

3. The ballastless track bearing platform milling and grinding vehicle according to claim 2, characterized in that, the working system further comprises: a generator set (5) fixed above the rear end of the carrying frame, the rear-end working device being located between the generator set (5) and the cooling water system (6), and the generator set (5) providing necessary power supply for the whole vehicle operation; wherein the front-end working device is a milling device (2) and the rear-end working device is a grinding device (3).

4. The ballastless track bearing platform milling and grinding vehicle according to claim 1, characterized in that: the lifting device (4) is a straight-arm hydraulic telescopic lifting device capable of realizing 360° rotation in the horizontal plane and having a small-range elevation function.

5. The ballastless track bearing platform milling and grinding vehicle according to claim 3, characterized in that: the working system further comprises: a pipeline winding and unwinding device (8) fixedly mounted on the carrying frame, the pipeline winding and unwinding device (8) being located at the side of the cooling water system (6).

6. The ballastless track support platform milling and grinding vehicle according to claim 5, characterized in that: at least one water pump input interface and at least one cooling water output interface are arranged on the pipeline winding and unwinding device (8), and at least one power input interface and at least one power output interface are arranged on the pipeline winding and unwinding device (8).

7. The ballastless track rail milling and grinding vehicle according to claim 5, wherein The work system further comprises: An electrical system (7) for controlling the power supply of the generator set (5) to the work device, the power supply of the water pump of the cooling water system (6), the tightening and release of the pipeline winding and unwinding device (8), the whole vehicle lighting and the horn.

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