Water jet forcible entry device and method for repairing track bed and base of railway track
Through the water jet device of the multi-degree of freedom adjustment nozzle, the problem of insufficient freedom of nozzle position and angle adjustment of railway track beds and bases is solved, efficient dismantling and equipment protection of multiple types of cracks is achieved, and maintenance efficiency and accuracy are improved.
Patent Information
- Application Number
- CN202510777384.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-11
- Publication Date
- 2025-08-12
AI Technical Summary
In the prior art, the nozzle position and angle adjustment freedom of the water jet breaker device of the railway track bed and base is limited, and it cannot adapt to cracks of multiple types of sizes, and it cannot avoid rails and sleepers, resulting in low maintenance efficiency and equipment damage.
The nozzle device with multiple degrees of freedom is adopted to adjust the nozzle position and angle by controlling the first and third driving sources, adjust the nozzle height in combination with the limit switch, avoid the rails and sleepers, and use high-pressure water jets to break it.
It realizes efficient dismantling of cracks of multiple types of sizes, avoids damage to rails and sleepers, improves the timeliness and accuracy of maintenance, and reduces resource waste.
Smart Images
Figure CN120465336A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of water jet and track demolition, and in particular relates to a water jet demolition device and method for repairing railway track bed and base. Background Art
[0002] Ballastless track inevitably develops cracks during long-term operation, and these cracks in the concrete have a persistent impact on the trackbed slab. Excessively large cracks can directly impact the structural strength of the trackbed slab. The trackbed slab has load limits based on actual construction conditions. If cracks in the trackbed slab exceed the load limit, the load on the track can be affected, leading to deformation of the steel reinforcement in the trackbed slab. Given the severity of this problem, regular inspections of railway sections are necessary to document and repair any cracks. Large cracks require removal of the existing concrete and re-casting. Manual concrete demolition with hammers is inefficient and can damage the steel reinforcement within the high-speed rail track. High-pressure water jets, which efficiently demolish concrete without damaging the reinforcement, have led to the idea of applying high-pressure water jets to the maintenance and demolition of high-speed rail trackbeds and substructures.
[0003] In the traditional construction process, patrol inspectors often inspect the tracks, and when cracks are found, they determine whether to repair them. Then, after centralized feedback, they carry out subsequent demolition and repair, which results in a waste of resources and untimely repairs. Moreover, the traditional water jet demolition device used to repair railway track beds and bases, although the nozzle position and angle can be adjusted to a certain extent, has limited adjustment freedom and cannot be well applied to cracks of various types and sizes; during the operation of the nozzle, it cannot avoid the rails and sleepers well, causing varying degrees of damage and impact to the nozzle itself, as well as the rails and sleepers. In response to the problems of low inspection efficiency and low demolition and repair accuracy, the present invention provides a device that integrates the functions of automated disease detection and automated demolition and repair. Summary of the Invention
[0004] In order to solve the above problems, the present invention proposes a water jet demolition device and method for repairing railway track beds and bases. By controlling the first driving source and the third driving source to adjust the position and angle of the nozzle, multi-degree-of-freedom adjustment of the nozzle is achieved, which can be suitable for demolishing concrete under cracks of various types and sizes; at the same time, the height of the nozzle can be adjusted by controlling the second driving source according to the signal of the limit switch. With the help of the limit switch, the rails and sleepers can be accurately avoided, avoiding affecting the nozzle itself, the rails and sleepers, etc.
[0005] To achieve the above objectives, in a first aspect, the present invention provides a water jet demolition device for repairing railway track bed and base, which adopts the following technical solutions:
[0006] A water jet demolition device for repairing railway track bed and base, comprising a mobile base, an adjustment mechanism, a control system and a high-pressure pump group arranged on the mobile base, and an actuator arranged on the adjustment mechanism;
[0007] The actuator includes a support connected to the adjustment mechanism, a first driving source provided on the support, a lead screw connected to the first driving source, a moving block connected to the lead screw, a second driving source provided on the moving block, a lifting rod provided on the moving block and cooperating with the second driving source, a third driving source provided on the lifting rod, a rotating shaft connected to the third driving source, and a nozzle provided on the rotating shaft;
[0008] A plurality of limit switches are provided on the support; the limit switches, the first driving source, the second driving source, and the third driving source are all connected to the control system; the control system is used to adjust the position and angle of the nozzle by controlling the first driving source and the third driving source, and to adjust the height of the nozzle by controlling the second driving source according to the signal of the limit switch.
[0009] Furthermore, a slide rail and a slide groove are provided between the moving block and the support, and a thread sleeve cooperating with the lead screw is provided in the moving block.
[0010] Furthermore, the lifting rod is a rack, and the second driving source is provided with a gear meshing with the rack.
[0011] Furthermore, a connecting rod is vertically arranged on the lifting rod, and the third driving source is arranged on the connecting rod; the rotating shaft is rotatably connected to the connecting rod through a bearing.
[0012] Furthermore, the nozzle is connected to the high-pressure pump group through a connecting pipe; and a dust cover is provided on the support.
[0013] Furthermore, the adjustment mechanism includes an actuator arm hinged to the movable base; one end of the actuator arm is connected to the movable base via a first telescopic member, and the other end is connected to the actuator mechanism.
[0014] Furthermore, a first slide rail is provided on the movable base, a first connecting plate is slidably provided on the first slide rail, a second slide rail perpendicular to the first slide rail is provided on the first connecting plate, a second connecting plate is slidably provided on the second slide rail, and the execution arm is hinged on the second connecting plate.
[0015] Furthermore, the end of the execution arm is rotatably connected to the support via a rotating support plate, and a second telescopic member is further connected between the execution arm and the support.
[0016] Furthermore, the two ends of the actuator are respectively provided with a visual detection system. When the crack areas collected by the two visual detection systems are both larger than the preset area and the maximum cross-sectional dimensions of the cracks are both larger than the preset dimensions, the demolition operation is carried out.
[0017] In order to achieve the above-mentioned purpose, in a second aspect, the present invention further provides a water jet demolition method for repairing railway track bed and base, which adopts the following technical solution:
[0018] A water jet demolition method for repairing railway track beds and foundations, employing the water jet demolition device for repairing railway track beds and foundations as described in the first aspect of the present invention; comprising: the control system adjusts the position and angle of the nozzle by controlling the first drive source and the third drive source to demolish concrete; during movement of the nozzle, the position of the rails and sleepers is determined by means of a limit switch, and the control system adjusts the height of the nozzle to avoid the rails and sleepers by controlling the second drive source according to a signal from the limit switch.
[0019] Compared with the prior art, the present invention has the following beneficial effects:
[0020] The actuator in the present invention includes a support connected to the adjusting mechanism, a first driving source arranged on the support, a screw connected to the first driving source, a moving block connected to the screw, a second driving source arranged on the moving block, a lifting rod arranged on the moving block and cooperating with the second driving source, a third driving source arranged on the lifting rod, a rotating shaft connected to the third driving source, and a nozzle arranged on the rotating shaft; the control system can adjust the position and angle of the nozzle by controlling the first driving source and the third driving source, thereby realizing multi-degree-of-freedom adjustment of the nozzle, and can be suitable for breaking concrete under cracks of various types and sizes; at the same time, the control system can adjust the height of the nozzle by controlling the second driving source according to the signal of the limit switch, and with the help of the limit switch, it can accurately avoid the rails and sleepers, thereby avoiding affecting the nozzle itself, the rails and sleepers, etc.
[0021] In the present invention, through the integration of the visual inspection system, the equipment inspects along the track. When the collected crack information meets the set requirements, the equipment stops and moves to the corresponding position. The demolition operation is directly carried out with the help of the water jet demolition device, and then maintenance is carried out. This not only avoids the operation of staff or special inspection devices and reduces the waste of resources, but also can enter the demolition operation process in time when problems are found, greatly improving the timeliness of track maintenance. When judging cracks, the video or image information collected at both ends of the actuator is judged at the same time, avoiding the problem of misjudgment of cracks caused by problems such as shooting angles. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The drawings constituting a part of the specification of this embodiment are used to provide a further understanding of this embodiment. The schematic embodiments and descriptions of this embodiment are used to explain this embodiment and do not constitute an improper limitation on this embodiment.
[0023] Figure 1 Schematic diagram of the overall structure of the device of Example 1 of the present invention;
[0024] Figure 2 Schematic diagram of the actuator of Example 1 of the present invention;
[0025] Figure 3 Schematic diagram of the adjustment mechanism of Example 1 of the present invention;
[0026] Figure 4 This is a schematic diagram of the demolition trajectory of Example 1 of the present invention;
[0027] Among them, 100, actuator; 101, support; 102, first drive source; 103, screw; 104, moving block; 105, second drive source; 106, lifting rod; 107, connecting rod; 108, third drive source; 109, rotating shaft; 110, buckle; 111, nozzle; 112, connecting pipe; 113, first limit switch; 114, second limit switch; 115, dust cover; 200, adjusting mechanism; 201, first slide rail; 202, first connecting plate; 203, second slide rail; 204, second connecting plate; 205, actuator arm; 206, first telescopic member; 207, pneumatic control valve; 208, second telescopic member; 209, rotating support plate; 300, control system; 400, high-pressure pump group; 500, mobile base. DETAILED DESCRIPTION
[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0029] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.
[0030] Example 1:
[0031] High-speed railways often utilize ballastless track designs. Within this ballastless rail structure, cement is often used for on-site construction. The most fundamental characteristic of this debris-free design is high precision, with millimeter tolerances essential for ensuring vehicle stability. Furthermore, ballastless track offers high durability, meeting the requirements of trains operating at speeds of up to 350 km / h.
[0032] Due to the unique nature of the building structure, cracks in ballastless track are inevitable over long-term operation. These cracks in the ballastless track concrete continuously impact the trackbed slab. Excessively large cracks can directly impact the slab's structural strength. Trackbed slabs have load limits based on actual construction conditions. If cracks exceed the slab's load limit, the load on the track can be affected, potentially causing deformation of the steel reinforcement within the slab.
[0033] Given the severity of these issues, railway authorities regularly inspect sections of railway tracks, document any cracks and other issues, and compile repair manuals and plans tailored to the specific conditions. Large cracks require removal of the existing concrete and recasting. Currently, concrete removal is often done manually with hammers, which is inefficient and can damage the steel reinforcement within high-speed rail tracks. High-pressure water jets, which can efficiently break down concrete without damaging the reinforcement, are being used for maintenance and demolition of high-speed rail trackbeds and subgrades.
[0034] The principle of using high-pressure water jets to break concrete is to aim the high-pressure water nozzle at the concrete surface and directly inject it into its gaps and tiny cracks. When the water pressure in the gap overcomes the pressure of the concrete, the breaking effect will occur. When using high-pressure water jets to break reinforced concrete structures, since the steel bars are relatively hard and belong to a uniform medium, and the concrete is relatively soft and belongs to an uneven medium, the concrete is easy to break without damaging the steel structure, will not produce violent vibrations, will not cause stress diffusion, and can be broken layer by layer to a specified depth. In this way, the track bed and base plate concrete can be broken without damaging the original steel structure, achieving the desired breaking effect. The specific content of the executive mechanism invention is as follows.
[0035] As described in the background technology, the traditional water jet demolition device used to repair railway track beds and bases can adjust the nozzle position and angle to a certain extent, but its adjustment freedom is limited and it cannot be well adapted to cracks of various types and sizes; moreover, during the operation of the nozzle, it cannot avoid the rails and sleepers well, causing varying degrees of damage and impact to the nozzle itself, as well as the rails and sleepers.
[0036] In response to the above problems, Figure 1 As shown, this embodiment provides a water jet demolition device for repairing railway track subgrades and bases. It is used to demolish subgrades and bases with concrete cracks, achieving the purpose of demolishing concrete without damaging the existing steel structure, and facilitating the secondary pouring and maintenance of the subgrades and bases. The device includes a mobile base 500, an adjustment mechanism 200, a control system 300, and a high-pressure pump unit 400 disposed on the mobile base 500, and an actuator 100 disposed on the adjustment mechanism 200.
[0037] like Figure 2 As shown, the actuator 100 includes a support 101 connected to the adjustment mechanism 200, a first driving source 102 provided on the support 101, a lead screw 103 connected to the first driving source 102, a moving block 104 connected to the lead screw 103, a second driving source 105 provided on the moving block 104, a lifting rod 106 provided on the moving block 104 and cooperating with the second driving source 105, a third driving source 108 provided on the lifting rod 106, a rotating shaft 109 connected to the third driving source 108, and a nozzle 111 provided on the rotating shaft 109;
[0038] A plurality of limit switches are provided on the support 101, for example, a first limit switch 113 and a second limit switch 114 are provided; the limit switches, the first driving source 102, the second driving source 105, and the third driving source 108 are all connected to the control system 300; the control system 300 is used to adjust the position and angle of the nozzle 111 by controlling the first driving source 102 and the third driving source 108, and to adjust the height of the nozzle 111 by controlling the second driving source 105 according to the signal of the limit switch.
[0039] Specifically, the control system 300 can adjust the position and angle of the nozzle 111 by controlling the first driving source 102 and the third driving source 108, thereby realizing multi-degree-of-freedom adjustment of the nozzle 111 and being applicable to the demolition of concrete under cracks of various types and sizes; at the same time, the control system 300 can adjust the height of the nozzle 111 by controlling the second driving source 105 according to the signal of the limit switch, and with the help of the limit switch, it can accurately avoid the rails and sleepers, thereby avoiding affecting the nozzle 111 itself, the rails and sleepers, etc.
[0040] In some embodiments, as Figure 2 As shown, the support 101 can be configured as a metal shell with a long slot formed on the top of the metal shell, within which the nozzle 111 can move left and right. Multiple limit switches are provided below the support 101. Specifically, the number and location of the limit switches can be determined based on the actual conditions of the rails and sleepers. A dust cover 115 is provided on the support 101 to prevent excessive impurities or dust from entering.
[0041] In some embodiments, as Figure 2 and Figure 3 As shown, the first driving source 102, the second driving source 105 and the third driving source 108 can be electric motors or pneumatic motors, etc.; when pneumatic motors are used, correspondingly, a pneumatic regulating valve 207 and a power source connected to each pneumatic motor are set on the mobile base 500.
[0042] In some embodiments, as Figure 2 As shown, a slide rail and a slide groove are provided between the moving block 104 and the support 101 to improve stability. A threaded sleeve is provided in the moving block 104 to cooperate with the lead screw 103. It can be understood that the lead screw 103 is rotatably provided on the support 101 through components such as bearings. When the first driving source 102 drives the lead screw 103 to rotate, the threaded sleeve drives the moving block 104 to move left and right, thereby driving the nozzle 111 to move.
[0043] In some embodiments, as Figure 2 As shown, the lifting rod 106 is a rack, and the second driving source 105 is provided with a gear that meshes with the rack. It is understood that when the second driving source 105 drives the gear to rotate, it can drive the rack to move, thereby adjusting the height of the nozzle 111. By changing the rotation direction of the second driving source 105, the height of the nozzle 111 can be raised or lowered.
[0044] In some embodiments, as Figure 2 As shown, a connecting rod 107 is vertically mounted on the lifting rod 106, and the third driving source 108 is mounted on the connecting rod 107. A rotating shaft 109 is rotatably connected to the connecting rod 107 via a bearing. A clip 110 is mounted on the rotating shaft 109 for attaching the nozzle 111. The clip 110 can be implemented using existing equipment. As can be understood, when the third driving source 108 rotates, the rotating shaft 109 rotates, thereby adjusting the angle of the nozzle 111.
[0045] In some embodiments, as Figure 2 As shown, the nozzle 111 is connected to the high-pressure pump group 400 through a connecting pipe 112; the high-pressure pump group 400 can be implemented by existing technology to provide a high-pressure water source, which will not be described in detail here.
[0046] In some embodiments, as Figure 1 and Figure 3As shown, the adjustment mechanism 200 includes an actuator arm 205 hinged to the mobile base 500; one end of the actuator arm 205 is connected to the mobile base 500 via a first telescopic member 206, and the other end is connected to the actuator 100. Optionally, a first slide rail 201 is provided on the mobile base 500, a first connecting plate 202 is slidably provided on the first slide rail 201, a second slide rail 203 perpendicular to the first slide rail 201 is provided on the first connecting plate 202, a second connecting plate 204 is slidably provided on the second slide rail 203, and the actuator arm 205 is hingedly connected to the second connecting plate 204 via a hinge or the like. It is understood that the operating range and position of the actuator 100 can be adjusted by adjusting the first telescopic member 206, the first connecting plate 202 on the first slide rail 201, and the second connecting plate 204 on the second slide rail 203.
[0047] In some embodiments, as Figure 1 and Figure 3 As shown, the end of the actuator arm 205 is rotatably connected to the support 101 via a rotating support plate 209, and a second telescopic member 208 is further connected between the actuator arm 205 and the support 101. By setting the rotating support plate 209 and the second telescopic member 208, the degree of freedom of control over the nozzle is further improved.
[0048] The mobile base 500 may be provided with wheels matching the slide rails, and a power mechanism for driving the wheels to rotate.
[0049] Example 2:
[0050] This embodiment provides a water jet demolition device for repairing railway trackbeds and foundations. The actuator 100 is a key component for demolding concrete. The nozzle 111 utilizes an alloy, high-flow nozzle capable of meeting the demands of ultra-high pressure and high flow. The nozzle 111 is fixed to a rotating shaft 109. Driven by a third drive source 108, the nozzle 111 can be rotated back and forth, enabling swinging of the nozzle 111 for demolding, improving demolition efficiency and enabling demolition in hard-to-reach corners.
[0051] The lead screw 103 and the threaded sleeve can adopt a ball screw structure, with the threaded sleeve serving as the threaded screw fixing nut. Rotating the lead screw drives the threaded screw fixing nut to move left and right, thereby driving the movable block 104 to move left and right, thus achieving left and right movement of the nozzle 111. In summary, the nozzle 111 can achieve multi-degree-of-freedom movement, enabling all-around, precise demolition of concrete roadbed slabs.
[0052] The up and down movement of the actuator 100 is achieved through the adjustment mechanism 200. The adjustment mechanism 200 can achieve three-point movement; the first movement is to control the second telescopic member 208, and with the help of the rotating support plate 209 to achieve the angle adjustment of the actuator arm 205±20 degrees, so as to achieve the angle adjustment of the actuator 100 and perform precise demolition. The second is to achieve the up and down movement of the actuator 100 with the help of the up and down telescopic action of the first telescopic member 206. The third is that the entire arm and the actuator are on the guide rail slider. Specifically, the front and back left and right adjustment of the actuator arm 205 and the actuator 100 can be achieved with the help of the adjustment of the first connecting plate 202 on the first slide rail 201 and the adjustment of the second connecting plate 204 on the second slide rail 203. In addition, the high-pressure pump group 400 can provide the water jet with a water pressure of 0-300Mpa and a large water flow of 0-200L / min, providing powerful power for water jet demolition.
[0053] In some embodiments, the demolition working conditions are input into the computer in advance through a self-written software algorithm program, and the computer automatically writes the following Figure 4 The demolition trajectory shown allows for precise demolition of the demolition area. The limit switches built into the actuator structure provide boundaries for the demolition trajectory, improving demolition accuracy while sparing the remaining intact roadbed and protecting the demolition equipment. A built-in precision control system enhances the equipment's anti-interference capabilities. The entire water jet demolition equipment consists of three main components: the high-pressure pump unit 400, the actuator 100 and the adjustment mechanism 200, and the mobile base 500. The mobile base 500 has pre-set mounting points for the equipment. Once the equipment is installed, simply tighten the mounting screws. This modular assembly improves efficiency. The equipment assembly sequence is as follows: first, use a crane to lower the mobile base 500 onto the high-speed rail track. Then, use the crane to attach the ultra-high-pressure pump unit 400 to the trolley. Finally, attach the actuator 100 and the adjustment mechanism 200 to the trolley. The entire equipment is assembled. For use, the mobile base 500 is used to transport the equipment to the construction site, and construction can begin.
[0054] In some embodiments, railway inspectors will regularly inspect the entire railway track section and record the damaged trackbed. According to the specific section, the equipment will be transported to the designated location. The equipment has a pre-stored control strategy. The size of the demolition target and the interference object are input into the strategy. The control strategy will automatically generate the demolition trajectory. The specific demolition trajectory is as follows: Figure 4As shown. The specific operation sequence during demolition is to input the demolition target and interference objects into the control strategy to automatically generate the demolition trajectory; turn on the air pump and water supply valve, input the target pressure value, and start the ultra-high pressure pump group 400; turn on the water valve switch, click the start button, etc., to perform accurate and efficient demolition. Because interference and collision with rails and sleepers may occur during the demolition of the roadbed and base plate, a limit device is added to the direction of movement of the actuator ball screw (left and right). When the limit point is reached, the nozzle water jet switch is turned off, and the hydraulic lifting motor is raised to avoid the rails and sleepers. When the nozzle reaches the drop limit point, the nozzle drops to the set target distance, the water switch is turned on, and demolition continues. At the same time, the control system 300 can also adjust the deflection angle of the angle motor through the PLC to achieve demolition in blind spots and improve the efficiency and effect of demolition.
[0055] Example 3:
[0056] This embodiment provides a water jet demolition method for repairing railway track beds and bases, which adopts the water jet demolition device for repairing railway track beds and bases as described in Example 1 or Example 2; the method includes: the control system 300 controls the first driving source 102 and the third driving source 108 to adjust the position and angle of the nozzle 111 to demolish concrete; during the movement of the nozzle 111, the position of the rails and sleepers is determined with the help of a limit switch, and the control system 300 controls the second driving source 105 according to the signal of the limit switch to adjust the height of the nozzle 111 to avoid the rails and sleepers.
[0057] Example 4:
[0058] This embodiment provides a water jet demolition method for repairing a railway track bed and a substructure, which uses the water jet demolition device for repairing a railway track bed and a substructure as described in Example 1 or Example 2; the method comprises:
[0059] In the traditional construction process, the tracks are often inspected by patrol personnel or special inspection equipment. When cracks are found, a judgment is made on whether to repair them. Then, after centralized feedback, subsequent demolition and repair are carried out. However, the above inspection and repair process has the problem of wasting resources and untimely maintenance. Based on this, in this embodiment, a visual detection system is set on the water jet demolition device used to repair the railway track bed and base to detect cracks. Through the integration of the visual detection system, the equipment inspects along the track. When the collected crack information meets the set requirements, the equipment stops and moves to the corresponding corresponding position. The demolition operation is carried out directly with the help of the water jet demolition device, and then repairs are carried out. This not only avoids the operation of staff or special inspection devices and reduces the problem of resource waste, but also can enter the demolition operation process in time when problems are found, greatly improving the timeliness of track maintenance.
[0060] Optionally, cameras or other visual detection systems are respectively provided at both ends in front of the actuator 100, and the cameras or other visual detection systems are connected to the control system 300; when judging cracks in the collected video or image, the video or image information collected at both ends of the actuator 100 are judged, and when the cracks in the video or image collected at both ends of the actuator 100 meet the requirements, the control system 300 controls the device to perform a demolition operation; judging the video or image information collected at both ends of the actuator 100 avoids the problem of misjudgment of cracks caused by problems such as shooting angles; for example, when the collected crack area is larger than the preset area, and the maximum cross-sectional size of the crack is larger than the preset size, a demolition operation is performed.
[0061] The above description is merely a preferred embodiment of this embodiment and is not intended to limit this embodiment. Those skilled in the art will readily appreciate that this embodiment may be modified and varied in various ways. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this embodiment shall be within the scope of protection of this embodiment.
Claims
1. A water jet demolition device for repairing railway track bed and foundation, characterized in that: It includes a mobile base, an adjustment mechanism, a control system and a high-pressure pump group arranged on the mobile base, and an actuator arranged on the adjustment mechanism; The actuator includes a support connected to the adjustment mechanism, a first driving source provided on the support, a lead screw connected to the first driving source, a moving block connected to the lead screw, a second driving source provided on the moving block, a lifting rod provided on the moving block and cooperating with the second driving source, a third driving source provided on the lifting rod, a rotating shaft connected to the third driving source, and a nozzle provided on the rotating shaft; A plurality of limit switches are provided on the support; the limit switches, the first driving source, the second driving source, and the third driving source are all connected to the control system; the control system is used to adjust the position and angle of the nozzle by controlling the first driving source and the third driving source, and to adjust the height of the nozzle by controlling the second driving source according to the signal of the limit switch.
2. The water jet demolition device for repairing railway track bed and foundation according to claim 1, characterized in that: A slide rail and a slide groove are provided between the moving block and the support, and a thread sleeve matched with the lead screw is provided in the moving block.
3. The water jet demolition device for repairing railway track bed and foundation according to claim 1, characterized in that: The lifting rod is a rack, and the second driving source is provided with a gear meshing with the rack.
4. The water jet demolition device for repairing railway track bed and foundation according to claim 1, characterized in that: A connecting rod is vertically arranged on the lifting rod, and the third driving source is arranged on the connecting rod; the rotating shaft is rotatably connected to the connecting rod through a bearing.
5. The water jet demolition device for repairing railway track bed and foundation according to claim 1, characterized in that: The nozzle is connected to the high-pressure pump group through a connecting pipe; a dust cover is provided on the support.
6. The water jet demolition device for repairing railway track bed and foundation according to claim 1, characterized in that: The adjustment mechanism includes an actuator arm hinged to the movable base; one end of the actuator arm is connected to the movable base via a first telescopic member, and the other end is connected to the actuator mechanism.
7. The water jet demolition device for repairing railway track bed and foundation according to claim 6, characterized in that: The movable base is provided with a first slide rail, a first connecting plate is slidably provided on the first slide rail, a second slide rail perpendicular to the first slide rail is provided on the first connecting plate, a second connecting plate is slidably provided on the second slide rail, and the actuator arm is hinged on the second connecting plate.
8. The water jet demolition device for repairing railway track bed and foundation according to claim 6, characterized in that: The end of the execution arm is rotatably connected to the support via a rotating support plate, and a second telescopic member is further connected between the execution arm and the support.
9. The water jet demolition device for repairing railway track bed and foundation according to claim 1, characterized in that: A visual detection system is provided at both ends of the actuator. When the crack areas collected by the two visual detection systems are both larger than the preset area and the maximum cross-sectional dimensions of the cracks are both larger than the preset dimensions, demolition operations are performed.
10. A water jet demolition method for repairing railway track bed and foundation, characterized in that: A water jet demolition device for repairing railway track beds and bases according to any one of claims 1 to 9 is used; comprising: the control system adjusts the position and angle of the nozzle by controlling the first drive source and the third drive source to demolish concrete; during the movement of the nozzle, the position of the rails and sleepers is determined with the help of a limit switch, and the control system adjusts the height of the nozzle to avoid the rails and sleepers by controlling the second drive source according to the signal of the limit switch.