A high-pressure water demolition device for track base plate construction

Abstract

This invention provides a high-pressure water jetting device for railway track base plate construction, comprising a car body assembly, a sliding frame, a high-pressure water jetting mechanism, and a fracturing adjustment mechanism. The sliding frame is fitted between the upper and lower frames of the car body assembly. A reciprocating drive mechanism is installed on the top of the upper frame to drive the sliding frame to reciprocate within the car body assembly. A wheel frame and track wheels are fixed to the bottom of the lower frame, with the track wheels positioned on the upper side of the rail for movement. A high-pressure water jetting mechanism is installed at one end of the sliding frame, and a fracturing adjustment mechanism is installed at the other end. The fracturing adjustment mechanism includes a radial push cylinder, which comprises a cylinder body. Multiple radial holes are provided on one or both sides of the cylinder body, and a radial push rod is sealed and fitted within each radial hole. This device eliminates the need for layer-by-layer high-pressure jetting of reinforced concrete layers, instead performing skip-stage punching and fracturing operations. This improves the efficiency of railway reinforced concrete layer repair construction, reduces environmental pollution, decreases labor intensity, and enhances safety.

Description

Technical Field

[0001] This invention belongs to the technical field of construction equipment for reinforced concrete layers of track base plates, specifically relating to a high-pressure water demolition device for track base plate construction. Background Technology

[0002] Currently, most high-speed railways in my country use ballastless track structures. Due to the characteristics of reinforced concrete structures and the increasing load on trains, the aging and damage of concrete structures will become more frequent in the later stages of operation. Once the reinforced concrete structure reaches a certain yield strength, it will lead to track structure failure, weakening or failure of compressive and shear strength, and overall structural instability, posing a significant safety hazard to high-speed rail operations. Because high-speed rail lines are exposed to natural factors (such as wind, rain, and temperature changes), some filler in the mortar layer may be eroded out, causing gaps between the mortar layer and the base plate and track slab. This not only reduces train comfort but may also lead to safety risks. Traditionally, manual pneumatic hammers are used to remove the mortar layer, which is extremely inefficient, requires a large amount of manpower and time, and is very labor-intensive. Furthermore, the dust and noise generated during pneumatic hammer removal pollute the environment and harm the health of workers.

[0003] Currently, there are two main types of methods for removing defects in reinforced concrete structures both domestically and internationally: one is traditional techniques, such as pneumatic chisel removal, mechanical milling, and hydraulic splitting. These traditional techniques can barely remove and repair defects in wide and narrow joints, lateral blocks, bridge retaining walls, and exposed parts of the base plate in high-speed railways. However, for some hidden projects, such as the post-cast strip under the track slab in bridge sections and damaged base plates, the only solution is to cut the rails and remove the track slab before treatment, which may require long-term or prolonged train speed restrictions, making it practically impossible. The other type of method is a new high-pressure water jet technology. This method uses high-pressure water jets to act on the micropores of the concrete surface. When the water pressure exceeds the tensile strength of the concrete, the concrete is broken and detached from the main body, achieving rapid separation and removal of the reinforcing steel from the concrete structure without damaging the reinforcing steel. This method allows for on-site removal and repair within a construction window (approximately 4-5 hours) without affecting train transportation the following day.

[0004] Existing technologies for repairing mortar layers in high-speed railways suffer from low efficiency, high labor intensity, serious environmental pollution, and safety risks. Therefore, finding more efficient, environmentally friendly, and safe methods to address these issues is crucial to improving the maintenance and repair efficiency of high-speed railway lines. Summary of the Invention

[0005] In view of the defects and problems of existing mortar layer construction methods and equipment, the present invention provides a high-pressure water demolition device for track base plate construction, which reduces environmental pollution, reduces labor intensity, and improves safety.

[0006] The solution to the technical problem of this invention is as follows: a high-pressure water demolition device for track base plate construction is adopted, including a car body assembly, a sliding frame, a reciprocating drive mechanism, and a high-pressure water jet mechanism, as well as a fracturing adjustment mechanism and an expansion assembly. The car body assembly includes an upper frame and a lower frame fixed together, with rollers installed in the upper and lower frames respectively. A sliding frame is fitted between the upper and lower frames, with the upper and lower parts of the sliding frame respectively cooperating with the corresponding rollers. A reciprocating drive mechanism is installed on the top of the upper frame, which is used to drive the sliding frame to move back and forth within the car body assembly. A wheel frame is fixed at the bottom of the lower frame, and a track wheel is installed on the wheel frame. The track wheel is located on the upper side of the rail and can move. A high-pressure water jet mechanism is installed at one end of the sliding frame, and a fracturing adjustment mechanism is installed at the other end of the sliding frame. The fracturing adjustment mechanism includes a radial push cylinder, which includes a cylinder body. Multiple radial holes are provided on one or both sides of the cylinder body, and a radial push rod is sealed and fitted in each radial hole.

[0007] Preferably, an expansion assembly is provided on the outside of the radial push cylinder. The expansion assembly includes a fixed sleeve, a movable sleeve, and radial push teeth. An arc-shaped movable sleeve is fixed to the outer end of a plurality of radial push rods, and a fixed sleeve is fixed to the outer wall of the cylinder body on the opposite side of the movable sleeve. A series of radial push teeth are fixed to the outside of the fixed sleeve and the movable sleeve, respectively. Each radial push tooth is conical and is used to squeeze the reinforced concrete layer to one side and break it.

[0008] Preferably, the sliding frame includes a strip frame, rails and end wall plates. The upper and lower parts of the strip frame are respectively provided with rails, and the two ends are respectively fixed with end wall plates. The upper and lower rails are respectively assembled with the rollers of the upper frame and the lower frame.

[0009] Preferably, the reciprocating drive mechanism includes a motor, a driving pulley, a driven pulley, a toothed belt, a transverse screw, a guide assembly, a shaft end fixing seat, and a screw sleeve assembly. Two pairs of shaft end fixing seats are respectively fixed to the inner sides of the end wall plates at both ends. At least two sets of guide assemblies are respectively fixed in the top inner cavity of the upper frame. A transverse screw is fitted in each guide assembly, and both ends of the transverse screw are respectively fixedly installed in the corresponding shaft end fixing seat. A screw sleeve assembly is fixedly installed in the upper frame, which includes a base and an internally fitted screw sleeve. The screw sleeve is fixed to the driven pulley as a whole. A driving pulley is installed on the motor shaft. The driving pulley is connected to one or two driven pulleys through a toothed belt. When the motor rotates, it can drive the driven gear to rotate, thereby driving the screw sleeve in the screw sleeve assembly to rotate, thereby driving the transverse screw to move laterally to the left or right. When the transverse screw moves left and right, it drives the sliding frame to reciprocate laterally.

[0010] Preferably, the high-pressure water jet mechanism includes a fixed sleeve two, a telescopic sleeve one, a base, and a high-pressure water pipe. The fixed sleeve two is vertically fixed below the end of the strip frame. The telescopic sleeve one is fitted inside the fixed sleeve two. The base is fixed to the bottom of the telescopic sleeve one. The two can slide and adjust. A high-pressure water pipe connector assembly is installed inside the base. The rear end of the connector assembly is connected to a high-pressure water supply pipe, which is connected to a high-pressure water system. A high-pressure water pipe is fixedly installed at the front end of the connector assembly. A high-pressure nozzle is installed at the front end of the high-pressure water pipe. The high-pressure nozzle includes a nozzle that moves forward along the axis and a nozzle that moves forward along the sidewall.

[0011] Preferably, a reciprocating high-pressure water pipe is installed on the rear side of the base. A hollow area is provided on the base, and supports are respectively installed at both ends of the hollow area. Guide rods are fixed between the two sides, and reciprocating screws are installed on each side via bushings. A motor is fixed to one support, and the motor shaft is connected to the reciprocating screw. A slider is fitted onto the guide rod, and the slider contains a reciprocating sleeve, which is fitted into the reciprocating screw. A reciprocating high-pressure water pipe is installed on the slider, and a high-pressure nozzle is installed at the front end of the reciprocating high-pressure water pipe. When the motor rotates, it can drive the slider to reciprocate, thereby driving the reciprocating high-pressure water pipe and the high-pressure nozzle to reciprocate.

[0012] Preferably, the fracturing adjustment mechanism further includes a fixed sleeve three, a telescopic sleeve two, a fixed seat two, and a support tube. The fixed sleeve three is vertically fixed to one end of the strip frame. The telescopic sleeve two, which can be telescopically extended, is fitted inside the fixed sleeve three. The two can be telescopically adjusted and locked. The fixed seat two is fixedly installed at the bottom of the telescopic sleeve two. The support tube is horizontally fixed on the fixed seat two. The radial thrust cylinder is fixedly installed at the front end of the support tube. An oil pipe is fitted inside the support tube and connected to the oil inlet of the radial thrust cylinder.

[0013] Preferably, an auxiliary guide wheel frame is fixed downward at the end of the lower body, and a guide wheel is installed on its upper side to support the radial thrust cylinder on the upper side of the guide wheel.

[0014] Preferably, the radial thrust cylinder includes a cylinder body with multiple radial holes on one or both sides of the cylinder body. The expansion assembly is equipped with an expansion drive mechanism, which controls the expansion drive mechanism to control the expansion degree of the expansion assembly. The expansion drive mechanism includes a fixed seat, a compensation cylinder, a one-way valve, a solenoid valve, a controller, and a constant pressure tank. The fixed seat is installed on the support pipe, and the compensation cylinder is fixed in the fixed seat. The oil pump pressurizes the oil in the oil tank into the constant pressure tank. The constant pressure tank is equipped with a pressure sensor. The controller controls the actual operation of the oil pump according to the set value of the pressure sensor to maintain a constant oil pressure in the constant pressure tank. The constant pressure tank is connected to the rear oil chamber of the compensation cylinder through an oil pipe and a one-way valve. The rear oil chamber of the compensation cylinder is connected to the constant pressure tank through an oil pipe and a solenoid valve, which is controlled by the controller.

[0015] The aforementioned high-pressure water jet breaking equipment is expected to improve the efficiency of high-speed rail track maintenance and repair, reduce environmental pollution, decrease labor intensity, and improve safety, offering the following beneficial effects:

[0016] 1. Improved efficiency: By using a mechanized lateral reciprocating motion, the equipment eliminates the need for high-pressure jetting to break up reinforced concrete layers (including mortar layers) layer by layer. Instead, it performs punching and fracturing operations in a skip-step manner. This allows the equipment to quickly address problems in reinforced concrete layers, reducing manual labor and thus improving maintenance efficiency.

[0017] 2. Energy saving and environmental protection: High-pressure water is used to break up reinforced concrete or mortar. Due to the use of a skip-type demolition method, the energy consumption required for traditional demolition work is reduced, which helps to reduce energy costs and at the same time reduces environmental pollution.

[0018] 3. Reduced labor intensity: Mechanized and automated work reduces manual labor, lowers the labor intensity of workers, and thus improves work safety and employee health.

[0019] 4. Safety: The precise control of the equipment and the high-pressure water crushing method reduce the risk of accidents, especially on high-speed railway lines, providing higher safety.

[0020] 5. Integrated design: The equipment has a compact component structure, making it easy to carry and operate, and making maintenance work more convenient. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a certain real-time mode of the high-pressure water breaking device of the present invention; Figure 2 yes Figure 1 A three-dimensional structural diagram of the CRRC body components;

[0022] Figure 3 yes Figure 2 Schematic diagram of the internal structure of the CRRC body components;

[0023] Figure 4 yes Figure 1 A schematic diagram of the screw and sleeve mating relationship in a reciprocating drive mechanism;

[0024] Figure 5 yes Figure 1 Front view of the device (without casing);

[0025] Figure 6 This is a schematic diagram of an expansion component;

[0026] Figure 7 yes Figure 6 Schematic diagram of the cross-sectional structure of the middle AA section;

[0027] Figure 8yes Figure 6 Schematic diagram of the cross-sectional structure of the middle BB section;

[0028] Figure 9 yes Figure 3 The right view;

[0029] Figure 10 This is another structural schematic diagram of the expansion component.

[0030] Numbered components in the diagram: Car body assembly 1, upper frame 11, lower frame 12, roller seat 13, roller 14, column 15, fixed seat one 16, outer wall 17, wheel frame 18, track wheel 19, sliding frame 2, strip frame 21, track 22, end wall plate 23, reciprocating drive mechanism 3, motor seat 31, motor 32, driving pulley 33, driven pulley 34, toothed belt 35, horizontal screw 36, guide assembly 37, shaft end fixed seat 38, screw sleeve assembly 39, high-pressure water jet mechanism 4, fixed sleeve two 41, telescopic sleeve one 42, base 43, high-pressure water pipe 44 (Reciprocating high-pressure flushing), fracturing adjustment mechanism 5, fixed sleeve three 51, telescopic sleeve two 52, fixed seat two 53, support pipe 54, radial push cylinder 55, radial push cylinder inlet 551, radial push rod 552, auxiliary guide wheel frame 56, expansion assembly 6, fixed sleeve one 61, movable sleeve 62, fixed strip 63, movable strip 64, guide sleeve 65, first inclined plate 66, second inclined plate 67, end shaft sleeve 68, end shaft 69, expansion drive mechanism 7, fixed buckle seat 71, compensation cylinder 72, one-way valve 73, solenoid valve 74, controller 75, constant pressure tank 76. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] Example 1: During the demolition of the reinforced concrete layer (including the mortar layer) of a high-speed railway, due to the limited thickness of the reinforced concrete or mortar layer, the narrow construction area, and the difficulty of manual construction, a method is now adopted as follows: Figure 1 The high-pressure water jet breaking equipment shown is used for the construction of track base plates. It can reduce the amount of breaking work, thereby achieving energy saving and environmental protection. The high-pressure water jet breaking equipment mainly includes a car body component 1, a sliding frame 2, a reciprocating drive mechanism 3, a high-pressure water jet mechanism 4, a fracturing adjustment mechanism 5, an expansion component 6, and an expansion drive mechanism 7, etc.

[0033] Specifically, such as Figure 1 , Figure 2 and Figure 5As shown, the car body assembly 1 includes an upper frame 11, a lower frame 12, roller seats 13, rollers 14, columns 15, a fixed base 16, an outer wall 17, wheel frames 18, and track wheels 19. The upper frame 11 and lower frame 12 are fixed together by the columns 15, and outer walls 17 are fixed around the periphery of both the upper and lower frames. A series of roller seats 13 are fixedly mounted laterally along the inner edge of the upper frame 11, and each roller seat 13 is equipped with a roller 14. A reciprocating drive mechanism 3 is mounted on the top of the upper frame 11. A series of roller seats 13 are fixedly mounted laterally along the inner edge of the lower frame 12, and each roller seat 13 is equipped with a roller 14. A wheel frame 18 is fixed to the bottom of the lower frame 12, and track wheels 19 are mounted on the wheel frames 18. The track wheels 19 are located on the upper side of the rail and can move. Ideally, a travel drive mechanism should be installed on the car body assembly 1 to drive the track wheel 19 to rotate, so that it can travel along the rail on its own.

[0034] like Figure 1 and Figure 5 As shown, the sliding frame 2 includes a strip frame 21, a track 22, and an end wall plate 23. The upper and lower parts of the strip frame 21 are respectively provided with the track 22, and the end wall plates 23 are fixed at both ends. The upper and lower tracks 22 are respectively assembled with the rollers 14 of the upper frame 11 and the lower frame 12, so that the sliding frame 2 can move laterally along each roller.

[0035] The reciprocating drive mechanism 3 is used to drive the sliding frame 2 to reciprocate within the vehicle body assembly 1. For example... Figure 3 and Figure 4 As shown, the reciprocating drive mechanism 3 includes a motor base 31, a motor 32, a driving pulley 33, a driven pulley 34, a toothed belt 35, a transverse screw 36, a guide assembly 37, a shaft end fixing seat 38, and a threaded sleeve assembly 39. One or two pairs of shaft end fixing seats 38 are respectively fixed to the inner sides of the end wall plates 23 at both ends. At least two sets of guide assemblies 37 are respectively fixed in the top inner cavity of the upper frame 11 (for example, guide assemblies are installed at both ends and / or the middle of the top of the upper frame 11). A transverse screw 36 is fitted within each guide assembly 37, with both ends of the transverse screw 36 fixedly installed within the corresponding shaft end fixing seat 38. A threaded sleeve assembly 39 is fixedly installed within the upper frame 11, comprising a base and an internally fitted threaded sleeve, which is integrally fixed to the driven pulley.

[0036] The motor mount 31 is fixed to the top of the vehicle body assembly 1, and the motor 32 is fixed to the motor mount 31. The drive pulley 33 is mounted on the shaft of the motor 32. The drive pulley 33 is connected to one or two driven pulleys 34 through a toothed belt 35. When the motor rotates, it can drive the driven gear to rotate, which in turn drives the screw sleeve in the screw sleeve assembly to rotate, thereby driving the horizontal screw 36 to move laterally to the left or right. When the horizontal screw moves left and right, it drives the sliding frame 2 to move laterally back and forth.

[0037] like Figure 1 and Figure 5 As shown, a high-pressure water jet mechanism 4 is installed at one end of the sliding frame 2, and a fracturing adjustment mechanism 5 is installed at the other end of the sliding frame 2. The high-pressure water jet mechanism 4 includes a fixed sleeve 41, a telescopic sleeve 42, a base 43, and a high-pressure water pipe 44 (for reciprocating high-pressure flushing). The fixed sleeve 41 is vertically fixed below the end of the strip frame 21. The telescopic sleeve 42 is fitted inside the fixed sleeve 41, and the base 43 is fixed to the bottom of the telescopic sleeve 42. The two can slide and adjust to change the extension length of the telescopic sleeve 42, thereby changing the height of the base 43. The sliding adjustment can be driven by a hydraulic cylinder, an electric actuator, or fixed by setting a locking screw at the connection point after adjustment. A high-pressure water pipe connector assembly is installed inside the base 43. The rear end of the connector assembly is connected to a high-pressure water supply pipe, which is connected to a high-pressure water system. A high-pressure water pipe 44 is fixedly installed at the front end of the connector assembly. A high-pressure nozzle is installed at the front end of the high-pressure water pipe 44. The high-pressure nozzle includes a nozzle that moves forward along the axis and a nozzle that moves forward along the sidewall. Furthermore, a reciprocating high-pressure water pipe can also be installed on the base 43, specifically on the rear side in the direction of vehicle travel. For example, a hollow area is set on the base, and supports are set at both ends of the hollow area. Guide rods are fixed between the two sides, and reciprocating screws are installed through bushings. A motor is fixed on one support, and the motor shaft is connected to the reciprocating screw. A slider is fitted on the guide rod, and the slider contains a reciprocating screw sleeve. The reciprocating screw sleeve is installed in conjunction with the reciprocating screw. A reciprocating high-pressure water pipe is installed on the slider, and a high-pressure nozzle is installed at the front end of the reciprocating high-pressure water pipe. When the motor rotates, it can drive the slider to move back and forth, thereby driving the reciprocating high-pressure water pipe and the high-pressure nozzle to move back and forth.

[0038] like Figure 1The fracturing adjustment mechanism 5 shown includes a fixed sleeve 3 51, a telescopic sleeve 2 52, a fixed seat 2 53, a support pipe 54, a radial thrust cylinder 55, and an auxiliary guide wheel frame 56. The fixed sleeve 3 51 is vertically fixed to the other end of the strip frame 21. The telescopic sleeve 2 52, which can extend and retract, is fitted inside the fixed sleeve 3 51; both can be adjusted and locked. A fixed seat 2 53 is fixedly installed at the bottom of the telescopic sleeve 2 52. A support pipe 54 is horizontally fixed on the fixed seat 2 53. A radial thrust cylinder 55 is fixedly installed at the front end of the support pipe 54. An oil pipe is fitted inside the support pipe 54 and connected to the oil inlet 551 of the radial thrust cylinder 55. An auxiliary guide wheel frame 56 can also be fixed downwards at the end of the lower frame 12, with a guide wheel installed on its upper side to support the radial thrust cylinder 55. The radial thrust cylinder 55 includes a cylinder body with multiple radial holes on one or both sides. A radial thrust rod 552 is sealed and fitted inside each radial hole. In this embodiment, multiple radial holes are provided on one side of the cylinder body and radial push rods 552 are respectively sealed and installed thereon. The radial push cylinder 55 is provided with an expansion assembly 6.

[0039] like Figure 10 An expansion assembly 6, as shown, includes a fixed sleeve 61, a movable sleeve 62, a fixed strip 63, a movable strip 64, a guide sleeve 65, a first inclined plate 66, a second inclined plate 67, an end sleeve 68, and an end shaft 69. An arc-shaped movable sleeve 62 is fixed to the outer end of a plurality of radial push rods 552, and a fixed sleeve 61 is fixed to the outer wall of the cylinder body opposite the movable sleeve 62. A series of radial push teeth, each conical in shape, are fixed to the outer sides of the fixed sleeve 61 and the movable sleeve 62, respectively, for squeezing and breaking up the mortar layer to one side. Typically, the mortar layer on the side not impacted by high-pressure water (i.e., the front side) has a robust support structure, corresponding to one side of the fixed sleeve 61, while one side of the mortar layer on the other side (i.e., the rear side) corresponds to the movable sleeve 62. When high-pressure oil is filled into the radial push cylinder 55, multiple radial push rods 552 extend outward and drive the movable sleeve 62 to move outward, applying pressure to the side wall of the rear mortar layer, forcing the mortar side to detach from the track plate and the base plate, and being crushed by multiple radial push teeth.

[0040] In implementing the above scheme, the car body assembly 1 is first moved onto the rails. Then, the heights of the high-pressure water jet mechanism 4 and the fracturing adjustment mechanism 5 on both sides of the sliding frame 2 are adjusted so that the high-pressure water pipe 44 corresponds to one side of the mortar layer and the radial thrust cylinder corresponds to the other side of the mortar layer. Next, the top motor is controlled to rotate, driving the right side of the sliding frame 2 (i.e., one side of the high-pressure water jet mechanism 4) inward. Simultaneously, the high-pressure water jet system is activated, and the mortar layer is broken up by high-pressure water through the gradually moving high-pressure nozzle, ultimately forming a perforation in the mortar layer. Then, the top motor is controlled to rotate, driving the left side of the sliding frame 2 (i.e., one side of the fracturing adjustment mechanism 5) inward, allowing the radial thrust cylinder 55 to gradually insert into the perforation and fracturing the perforation layer by layer. Clearly, the rear wall of the perforation is thinner, while the front side, located in the unbroken area, is very thick. Under the action of the radial thrust cylinder 55, the mortar layer will move backward and break up. After the auxiliary reciprocating high-pressure water pipe and nozzle are installed, the reciprocating high-pressure water pipe will flush and clean the broken mortar layer behind it during the punching operation on the right side.

[0041] Based on the above scheme, the expansion assembly 6 located at the front end of the radial thrust cylinder 55 can also adopt the following... Figures 6-8 The structure shown is as follows. Specifically, the outer side of the fixing sleeve 61 is set as a plane, as shown in the figure. Figure 7 As shown, on the plane of the fixed sleeve 61, a fixed strip 63 is fixed on the left side, and a movable strip 64 is installed on the right side, with the two strips parallel to each other. Guide sleeves 65 are respectively provided at both ends of the fixed strip 63, and both ends of the movable strip 64 are respectively fitted through the two guide sleeves 65, thus constraining the movable strip 64 to have only one degree of sliding freedom. A first inclined plate 66 and a second inclined plate 67 are hinged to the upper sides of the fixed strip 63 and the movable strip 64 via bearing seats. End bushings 68 are respectively provided at the top of the first inclined plate 66 and the second inclined plate 67, and the two end bushings 68 at the top are hinged together by a through end shaft 69. Therefore, when the movable strip 64 moves relative to the fixed strip 63, it can cause each pair of first inclined plates 66 and second inclined plates 67 to move inward or outward. When they move inward, the first inclined plates 66 and second inclined plates 67 protrude outward; when they move outward, the first inclined plates 66 and second inclined plates 67 retract inward or even fit against the surface of the corresponding strip. Based on the above structure, after installing the expansion drive mechanism 7, the expansion drive mechanism 7 can be controlled to control the degree of expansion of each inclined plate.

[0042] like Figure 6As shown, the expansion drive mechanism 7 includes a fixed seat 71, a compensating cylinder 72, a one-way valve 73, a solenoid valve 74, a controller 75, a constant pressure tank 76, an oil pump 77, and an oil tank 78. The fixed seat 71 is installed on the support pipe 54, the fixed sleeve 61, or the fixed strip 63. The compensating cylinder 72 is fixed within the fixed seat 71. The front end of the push-pull rod of the compensating cylinder 72 is connected to the end of the movable strip 64 to control its movement. The oil pump 77 pressurizes oil from the oil tank into the constant pressure tank 76. The constant pressure tank 76 is equipped with a pressure sensor. The controller controls the operation of the oil pump based on the pressure sensor's set value to maintain a constant oil pressure within the constant pressure tank. The constant pressure tank is connected to the rear oil chamber of the compensating cylinder 72 via an oil pipe and the one-way valve 73. Simultaneously, the rear oil chamber of the compensating cylinder 72 is connected to the constant pressure tank 76 via an oil pipe and the solenoid valve 74, which is controlled by the controller. The above solution primarily addresses the situation where, when the span of the high-pressure water perforation interval increases, the rear mortar layer, though pushed, is not completely broken due to the limited expansion of the radial push cylinder 55. During implementation, after the radial push cylinder 55 is filled with oil, the fixed sleeve 61 and the movable sleeve 62 separate, causing the rear mortar layer to move outward (whether broken or not). When the radial push cylinder 55 draws oil outward, causing the radial push rods to retract backward, the pressure in the compensation cylinder's oil chamber decreases. Oil from the constant pressure tank enters the compensation cylinder through the one-way valve, causing the first inclined plate 66 and the second inclined plate 67 to unfold and support the sidewall of the mortar layer. When the radial push cylinder 55 is refilled with oil and expanded, the oil in the compensation cylinder does not flow back into the constant pressure tank due to the one-way valve. At this point, the unfolded first and second inclined plates 66 and 67, combined with the expansion of the radial push cylinder 55, further cause the mortar layer to be broken under constant pressure. This process can occur multiple times. Finally, the solenoid valve 74 is controlled by the controller to open the return oil pipe, so that the oil in the compensation cylinder flows back into the constant pressure tank, in preparation for the next expansion.

[0043] The above scheme outlines the main implementation process for maintaining the mortar layer of high-speed railway tracks:

[0044] 1. Preparation: First, move the high-pressure water demolition equipment onto the rails and ensure that it is adjusted to a suitable height so that the high-pressure water nozzles can correspond to the position of the mortar layer.

[0045] 2. High-pressure water demolition: Activate the high-pressure water system and use high-pressure nozzles to demolish the mortar layer with high-pressure water, gradually penetrating the mortar layer and forming perforations. This step weakens the mortar structure, creating through-holes.

[0046] 3. Fracturing: Using a fracturing adjustment mechanism, the radial thrust cylinder is gradually inserted into the perforation from the other side of the rail to fracture the perforation layer by layer. The fracturing process forces the mortar layer to move backward and break up.

[0047] 4. Cleaning: Install auxiliary reciprocating high-pressure water pipes and nozzles to flush and clean the broken mortar layer behind, ensuring the cleanliness of the maintenance area.

[0048] The specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, or improvements made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. For example, a vibration mechanism can be installed at the rear end of the supplementary hydraulic cylinder or at the front end of its propulsion shaft.

Claims

1. A high-pressure water jetting device for track base plate construction, comprising a vehicle body assembly (1), a sliding frame (2), a reciprocating drive mechanism (3), and a high-pressure water jetting mechanism (4), characterized in that, It also includes a fracturing adjustment mechanism (5) and an expansion assembly (6). The vehicle body assembly (1) includes an upper frame (11) and a lower frame (12) fixed together. Rollers (14) are installed in the upper and lower frames respectively. A sliding frame (2) is fitted between the upper and lower frames. The upper and lower parts of the sliding frame (2) are respectively fitted together with the corresponding rollers (14). A reciprocating drive mechanism (3) is installed on the top of the upper frame (11). The reciprocating drive mechanism (3) is used to drive the sliding frame (2) to move back and forth in the vehicle body assembly (1). A wheel frame (18) is fixed at the bottom of the lower frame (12). The wheel frame (18) is equipped with track wheels (19). The track wheel (19) is located on the upper side of the rail and can move. A high-pressure water jet mechanism (4) is installed at one end of the sliding frame (2), and a fracturing adjustment mechanism (5) is installed at the other end of the sliding frame (2). The fracturing adjustment mechanism (5) includes a radial thrust cylinder (55). The radial thrust cylinder (55) includes a cylinder body. Multiple radial holes are provided on one or both sides of the cylinder body. A radial push rod (552) is sealed in each radial hole. An expansion assembly (6) is provided on the outside of the radial thrust cylinder (55). The expansion assembly (6) includes a fixed sleeve (61), a movable sleeve (62), and radial push teeth. The outer ends of the multiple radial push rods (552) are fixed. An arc-shaped movable sleeve (62) is provided, and a fixed sleeve (61) is fixed to the outer wall of the cylinder body on the opposite side of the movable sleeve (62). A series of radial push teeth are fixed to the outer sides of the fixed sleeve (61) and the movable sleeve (62), respectively. Each radial push tooth is conical and is used to squeeze the reinforced concrete layer to one side and break it. The outer side of the fixed sleeve (61) is set as a plane. Based on the plane of the fixed sleeve (61), a fixed strip plate (63) is fixed on the left side and a movable strip plate (64) is installed on the right side. The two plates are parallel to each other. Guide sleeves (65) are provided at both ends of the fixed strip plate (63) and the movable strip plate (64) is installed on the right side. The two ends of the movable plate (64) are respectively fitted into two guide sleeves (65). The movable plate (64) is constrained to have only one degree of sliding freedom. The first inclined plate (66) and the second inclined plate (67) are hinged to the upper side of the fixed plate (63) and the movable plate (64) through the bearing seat. The top of the first inclined plate (66) and the second inclined plate (67) are respectively provided with end bushings (68), and the two end bushings (68) at the top are hinged together by the through end shaft (69). When the movable plate (64) moves relative to the fixed plate (63), it can drive each pair of first inclined plates (66) and second inclined plates (67) to move closer to the inside or further away from the outside.

2. The high-pressure water demolition equipment for track base plate construction according to claim 1, characterized in that, The sliding frame (2) includes a strip frame (21), a track (22) and an end wall plate (23). The upper and lower parts of the strip frame (21) are respectively provided with the track (22), and the end wall plates (23) are respectively fixed at both ends. The upper and lower tracks (22) are respectively assembled with the rollers (14) of the upper frame (11) and the lower frame (12).

3. The high-pressure water demolition equipment for track base plate construction according to claim 2, characterized in that, The reciprocating drive mechanism (3) includes a motor (32), a driving pulley (33), a driven pulley (34), a toothed belt (35), a transverse screw (36), a guide assembly (37), a shaft end fixing seat (38), and a screw sleeve assembly (39). Two pairs of shaft end fixing seats (38) are respectively fixed to the inner side of the end wall plates (23) at both ends. At least two sets of guide assemblies (37) are respectively fixed in the top inner cavity of the upper frame (11). A transverse screw (36) is fitted in each guide assembly (37). The two ends of the transverse screw (36) are respectively fixedly installed on the corresponding shaft end fixing seat. Inside 38), a screw sleeve assembly (39) is fixedly installed inside the upper frame (11), which includes a base and an internally fitted screw sleeve. The screw sleeve is fixed as a whole with the driven pulley. A drive pulley (33) is installed on the shaft of the motor (32). The drive pulley (33) is connected to one or two driven pulleys (34) through a toothed belt (35). When the motor rotates, it can drive the driven gear to rotate, thereby driving the screw sleeve in the screw sleeve assembly to rotate, thereby driving the horizontal screw (36) to move laterally to the left or right. When the horizontal screw moves left and right, it drives the sliding frame (2) to move laterally back and forth.

4. The high-pressure water demolition equipment for track base plate construction according to claim 2, characterized in that, The high-pressure water jet mechanism (4) includes a fixed sleeve two (41), a telescopic sleeve one (42), a base (43), and a high-pressure water pipe (44). The fixed sleeve two (41) is vertically fixed below the end of the strip frame (21). The telescopic sleeve one (42) is fitted inside the fixed sleeve two (41). The base (43) is fixed at the bottom of the telescopic sleeve one. The two can slide and adjust. A high-pressure water pipe connector assembly is installed inside the base (43). The rear end of the connector assembly is connected to a high-pressure water supply pipe. The high-pressure water supply pipe is connected to a high-pressure water system. A high-pressure water pipe (44) is fixedly installed at the front end of the connector assembly. A high-pressure nozzle is installed at the front end of the high-pressure water pipe (44). The high-pressure nozzle includes a nozzle that moves forward along the axis and a nozzle that moves forward along the side wall.

5. The high-pressure water demolition equipment for track base plate construction according to claim 4, characterized in that, A reciprocating high-pressure water pipe is installed on the rear side of the base (43). A hollow area is set on the base and supports are set at both ends of the hollow area. Guide rods are fixed between the two sides and reciprocating screws are installed through bushings. A motor is fixed on one side support and the motor shaft is connected to the reciprocating screw. A slider is fitted on the guide rod and the slider contains a reciprocating screw sleeve. The reciprocating screw sleeve is installed in conjunction with the reciprocating screw. A reciprocating high-pressure water pipe is installed on the slider and a high-pressure nozzle is installed at the front end of the reciprocating high-pressure water pipe. When the motor rotates, it can drive the slider to move back and forth, thereby driving the reciprocating high-pressure water pipe and the high-pressure nozzle to move back and forth.

6. The high-pressure water demolition equipment for track base plate construction according to claim 2, characterized in that, The fracturing adjustment mechanism (5) further includes a fixed sleeve three (51), a telescopic sleeve two (52), a fixed seat two (53), and a support pipe (54). The fixed sleeve three (51) is vertically fixed to one end of the strip frame (21). The telescopic sleeve two (52) is fitted inside the fixed sleeve three (51). The two can be telescopically adjusted and locked. The fixed seat two (53) is fixedly installed at the bottom of the telescopic sleeve two (52). The support pipe (54) is fixed horizontally on the fixed seat two (53). The radial thrust cylinder (55) is fixedly installed at the front end of the support pipe (54). An oil pipe is fitted inside the cavity of the support pipe (54). The oil pipe is connected to the oil inlet (551) of the radial thrust cylinder (55).

7. The high-pressure water demolition equipment for track base plate construction according to claim 6, characterized in that, An auxiliary guide wheel frame (56) is fixed downward at the end of the lower frame (12), and a guide wheel is installed on its upper side to support the radial thrust cylinder (55) on the upper side of the guide wheel.

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