Railway ballastless track off-joint and crack grouting device

Abstract

This utility model relates to the field of railway ballastless track repair and reinforcement technology, and discloses a grouting device for gaps and cracks in railway ballastless track. The device includes: an injector comprising a cylinder, a piston, a piston rod, and an elastic component. One end of the cylinder has a grout outlet. The piston is movably connected within the cylinder and fixedly connected to one end of the piston rod. The other end of the piston rod passes through the other end of the cylinder. The elastic component drives the piston rod to move towards the grout outlet. A main pipe and multiple branch pipes are also included, at least one of which is made of flexible material. The main pipe is connected to the grout outlet, and one end of each branch pipe is connected to the main pipe. A grouting seat is connected to the other end of each branch pipe, and the grouting seat is fixed to the surface of the crack and guides the grout into the crack. By using multiple branch pipes and grouting seats, multiple cracks can be grouted simultaneously. The elastic component allows the piston rod to move automatically towards the grout outlet, reducing manual operation steps.

Description

Technical Field

[0001] This utility model relates to the field of railway ballastless track repair and reinforcement technology, and in particular to a grouting device for railway ballastless track joints and cracks. Background Technology

[0002] As a crucial component of modern railways, ballastless track is susceptible to various factors during long-term operation, such as repeated train loads, environmental erosion, and foundation settlement. These factors can lead to gaps and cracks in the track. If not repaired promptly, these small gaps will gradually widen, causing damage to the track structure and changes in track geometry, severely impacting the safety and reliability of railway transportation. To address this, grouting devices for ballastless track gaps and cracks have been developed. Their main function is to inject grout into the gaps and cracks through a grouting process, achieving filling and solidification, thereby restoring the integrity and stability of the track structure.

[0003] In the existing field of concrete crack repair, patent document CN221143684U provides a concrete crack repair tool. The core of this solution lies in the combination of a syringe, a grouting tube, a main pipe, and multiple branch pipes. The syringe is filled with grout, the grouting tube connects the syringe outlet to the main pipe, and the main pipe is a flexible tube connected to multiple branch pipes spaced along its length, with the branch pipes communicating internally with the main pipe. In actual operation, inserting the branch pipes into the crack and pushing the syringe piston rod achieves multi-point grouting. Compared to traditional single-point grouting syringes, this improves grouting efficiency to some extent, and the flexible tube design is adaptable to curved cracks. However, when examined in the specific scenario of grouting gaps and cracks in railway ballastless track, the existing technology has significant shortcomings. Especially in the complex environment of railway tracks, gaps and cracks are widely distributed and numerous. This solution uses manual piston rod pushing; when multiple cracks need to be repaired simultaneously, each syringe requires manual operation, which undoubtedly consumes a large amount of manpower. In railway maintenance operations, increased labor costs not only mean higher economic expenditures, but are also subject to limitations in human resource allocation and operational safety, making it difficult to meet the large-scale, efficient, and rapid repair needs of railways.

[0004] Therefore, developing a highly automated grouting device that can simultaneously handle multiple cracks and is easy to operate, effectively improving the repair efficiency of railway ballastless track defects, has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The present invention aims to provide a grouting device for gaps and cracks in railway ballastless tracks to overcome the shortcomings mentioned above.

[0006] In order to achieve the above objectives, the technical solution of this utility model is as follows:

[0007] Grouting device for joints and cracks in ballastless railway tracks, including:

[0008] A syringe includes a barrel, a piston, a piston rod, and an elastic component. One end of the barrel is provided with a dispensing hole. The piston is movably connected to the barrel and fixedly connected to one end of the piston rod. The other end of the piston rod passes through the other end of the barrel. The elastic component is used to drive the piston rod to move towards the dispensing hole.

[0009] A main pipe and multiple branch pipes, at least one of the main pipe and branch pipes being made of a flexible material, the main pipe being connected to a slurry outlet, and one end of each of the multiple branch pipes being connected to the main pipe; and

[0010] A grouting seat is connected to the other end of each of the multiple branch pipes. The grouting seat is used to fix the surface of the gap and guide the grout to flow into the gap.

[0011] Furthermore, the resilient component includes:

[0012] A drive cylinder is movably inserted into the other end of the cylinder body, and the other end of the piston rod passes through the drive cylinder and is fixedly and slidably connected to the drive cylinder; and

[0013] An elastic element is used to drive the drive cylinder to move toward the slurry outlet.

[0014] Furthermore, the other end of the piston rod passes through the bottom of the drive cylinder, and the piston rod is provided with a plurality of connecting holes spaced apart along its length.

[0015] The elastic component also includes a positioning pin detachably connected to the wall of the drive cylinder, the positioning pin being detachably connected to the connection hole.

[0016] Furthermore, the other end edge of the cylinder extends outward to form a first retaining edge, and the driving cylinder is slidably connected to the first retaining edge along the axial direction of the cylinder.

[0017] The cylinder wall of the drive cylinder is sleeved on the periphery of the cylinder body, and the edge of the drive cylinder near the slurry outlet extends inward to form a second retaining edge, which is located on the side of the first retaining edge near the slurry outlet.

[0018] The elastic element is used to move the first stop edge and the second stop edge away from each other.

[0019] Furthermore, the elastic element is a compression spring sleeved on the periphery of the cylinder, and the two ends of the compression spring are respectively connected to the first stop and the second stop.

[0020] Furthermore, the outer wall of the piston rod is adapted to the through hole at the bottom of the drive cylinder, and the outer wall of the piston rod is provided with two planes, through which the connecting hole is provided.

[0021] Furthermore, a sliding groove is provided on the outer edge of the first stop, and a sliding protrusion is provided on the inner side wall of the drive cylinder. The sliding protrusion is arranged along the axis of the cylinder body, and the sliding protrusion and the sliding groove are slidably connected in a one-to-one correspondence.

[0022] Furthermore, the other end of the piston rod passes through the bottom of the drive cylinder and is fixedly connected to a pressing handle.

[0023] Furthermore, the connection between the main pipe and the branch pipe, and between the main pipe and one end of the cylinder, are all threaded and detachable.

[0024] Furthermore, the grouting base includes an integrally formed grouting pipe and a base, the grouting pipe and the base are connected, the grouting pipe is connected to the other end of the branch pipe by a screw, and the base has a hollow structure.

[0025] Compared with the prior art, this utility model has at least the following advantages:

[0026] This invention, by setting up multiple branch pipes and grouting seats, can simultaneously grout multiple cracks, greatly improving grouting efficiency. Simultaneously, the elastic component allows the piston rod to automatically move towards the grout outlet, reducing cumbersome manual operations and further improving grouting efficiency. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of the grouting device for joints and cracks in ballastless railway tracks according to this utility model.

[0029] Figure 2 This is a cross-sectional view of the grouting device for joints and cracks in ballastless railway tracks according to this utility model;

[0030] Figure 3 This utility model Figure 2 A magnified view of a portion of region A in the middle;

[0031] Figure 4 This utility model Figure 2 A magnified view of a portion of region B in the middle;

[0032] Figure 5 This utility model Figure 2 A magnified view of a portion of region C.

[0033] Reference numerals: 1. Cylinder; 2. Piston; 3. Piston rod; 4. Grout outlet; 5. Main pipe; 6. Branch pipe; 7. Grouting pipe; 8. Base; 9. Drive cylinder; 10. Connecting hole; 11. Positioning pin; 12. First stop edge; 13. Second stop edge; 14. Compression spring; 15. Sliding groove; 16. Sliding protrusion; 17. Press handle. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] In the field of modern railway engineering, the maintenance and repair of ballastless tracks are of paramount importance, and grouting devices for gaps and cracks in ballastless tracks are a key piece of equipment. This invention, through the coordinated operation of its various components, can effectively complete the grouting repair of gaps and cracks in ballastless tracks.

[0037] Reference Figure 1-5 This utility model provides a grouting device for joints and cracks in railway ballastless tracks, including a syringe, a main pipe 5, a branch pipe 6, and a grouting seat.

[0038] The syringe includes a barrel 1, a piston 2, a piston rod 3, and an elastic component. The barrel 1 serves as the outer shell of the syringe, providing a stable space for the storage and delivery of the slurry. One end of the barrel 1 has a slurry outlet 4. The piston 2 is movably connected inside the barrel 1 and fits tightly against the inner wall of the barrel 1, enabling it to reciprocate within the barrel 1. One end of the piston 2 is fixedly connected to the piston rod 3, and the other end of the piston rod 3 passes through the other end of the barrel 1. When an external force is applied to the piston rod 3, the piston 2 will move accordingly within the barrel 1. To facilitate control of the piston rod 3, the other end of the piston rod 3 passes through the bottom of the drive cylinder 9 and is fixedly connected to a pressing handle 17. The elastic component is used to drive the piston rod 3 towards the slurry outlet 4, so as to continuously deliver the slurry into the gap when no one is operating it. Here, the gap is a general term for the joints and cracks in the ballastless track. The slurry mentioned above is preferably made of epoxy resin.

[0039] At least one of the main pipe 5 and the branch pipe 6 is made of a flexible material. The main pipe 5 is connected to the slurry outlet 4, and multiple branch pipes 6 are provided, with one end of each branch pipe 6 connected to the main pipe 5. Specifically, the connections between the main pipe 5 and the branch pipe 6, and between the main pipe 5 and one end of the cylinder 1, are threaded and detachable. The threaded and detachable connections between the components facilitate installation and disassembly, improving operational convenience. In a preferred embodiment of this invention, the branch pipe 6 is made of a flexible material, which can adapt to cracks of different shapes, improving the applicability of the device.

[0040] Multiple grouting seats are provided, and each grouting seat is connected to the other end of a branch pipe 6. The grouting seats are used to fix the surface of the gap and guide the grout into the gap. The grouting seat includes an integrally formed grouting pipe 7 and a base 8. The grouting pipe 7 and the base 8 are connected. The other end of the grouting pipe 7 is threaded to the branch pipe 6. The base 8 has a hollow structure, which facilitates the fixing of the base 8 with the sealant later.

[0041] Preferably, the elastic component includes a drive cylinder 9 and an elastic element. The drive cylinder 9 is movably inserted into the other end of the cylinder body 1, and the other end of the piston rod 3 passes through the drive cylinder 9 and is fixedly slidably connected to the drive cylinder 9. The elastic element is used to drive the drive cylinder 9 to move towards the slurry outlet 4.

[0042] Specifically, the other end of the piston rod 3 passes through the bottom of the drive cylinder 9, and the piston rod 3 is provided with a plurality of connecting holes 10 at intervals along its length. The elastic component also includes a positioning pin 11 detachably connected to the wall of the drive cylinder 9, and the positioning pin 11 is detachably connected to the connecting holes 10.

[0043] Preferably, the other end edge of the cylinder 1 extends outward to form a first retaining edge 12, and the drive cylinder 9 is slidably connected to the first retaining edge 12 along the axial direction of the cylinder 1; the edge of the drive cylinder 9 near the grout outlet 4 extends inward to form a second retaining edge 13, and the second retaining edge 13 is located on the side of the first retaining edge 12 near the grout outlet 4; the elastic element is used to drive the first retaining edge 12 and the second retaining edge 13 away from each other. The elastic element is a compression spring 14, which is sleeved on the periphery of the cylinder 1, and its two ends are connected to the first retaining edge 12 and the second retaining edge 13 respectively, and is used to drive the cylinder 1 to move towards the grout outlet 4. The compression spring 14 in the elastic component can be adjusted according to actual needs, further realizing the adjustability of the grouting pressure.

[0044] Preferably, the outer wall of the piston rod 3 is adapted to the through hole of the cylinder 1 of the drive cylinder 9, and the outer wall of the piston rod 3 has two planes, through which the connecting hole 10 passes. This design ensures that the piston rod 3 can only move axially relative to the drive cylinder 9 and cannot rotate circumferentially. This facilitates the passage of the locating pin 11 through the connecting hole 10.

[0045] A sliding groove 15 is provided on the outer edge of the first stop 12, and a sliding protrusion 16 is provided on the inner side wall of the drive cylinder 9. The sliding protrusion 16 is arranged along the axial direction of the cylinder 1, and the sliding protrusion 16 and the sliding groove 15 are slidably connected in a one-to-one correspondence. This design ensures that the drive cylinder 9 can only move axially relative to the cylinder 1 and cannot rotate circumferentially.

[0046] The working principle of this utility model:

[0047] a. Installation process:

[0048] First, connect one end of multiple branch pipes 6 to the main pipe 5 via threads. The branch pipes 6 are made of flexible material to accommodate cracks of different shapes. Then, connect the grouting seats to the other ends of the branch pipes 6 one by one, placing the grouting seats at specified intervals on the crack surface. Next, seal the cracks with sealant to ensure a good seal and prevent grout leakage during the grouting process, and then fix the grouting seats to the crack surface. After the sealant has cured, proceed to the next step.

[0049] b. Grouting process:

[0050] First, use the inlet of syringe barrel 1 to draw in grout. Ensure that syringe barrel 1 is filled with grout while expelling air from inside to guarantee grouting effect. Second, connect the outlet of syringe barrel 1 to the main pipe 5, ensuring a tight, leak-free connection. At this point, the elastic component is in its natural state. The operator pushes the pressing handle 17, moving the piston 2 towards the outlet hole 4. Grout enters the gap sequentially through syringe barrel 1, main pipe 5, branch pipe 6, and grouting seat until the pressing resistance increases significantly. Then, hold syringe barrel 1 with one hand and grip the drive cylinder 9 with the other. Move the drive cylinder 9 away from the grouting hole, compressing the compression spring 14. After the movement is complete, insert the positioning pin 11 into the drive cylinder 9, ensuring that the positioning pin 11 is connected to the connecting hole 10. The selected connecting hole 10 should meet the pressure requirements. After standing for a period of time, as the compression spring 14 gradually extends, it drives the drive cylinder 9 to move. The piston 2 moves in the cylinder 1 toward the slurry outlet 4, pressing the slurry into the crack through the main pipe 5 and the branch pipe 6.

[0051] It should be noted that if the pressure does not meet the requirements during the grouting process, the connection between the main pipe 5 and the cylinder 1 should be disconnected in time. At this time, the main pipe 5 should be separated from the cylinder 1, grouting fluid should be added to the main pipe 5, the main pipe 5 and the cylinder 1 should be reconnected, and the grouting operation should continue.

[0052] c. Cleaning process:

[0053] After injection, maintain a certain pressure to allow the grout to fully diffuse and fill the cracks. Allow the grout to cure; the curing time depends on the grout's properties and environmental conditions. Once cured, remove the grouting base, branch pipe 6, and main pipe 5 in sequence. Clean the sealant and grouting base, ensuring the track surface is clean and free of residue.

[0054] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0055] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A grouting device for joints and cracks in ballastless railway tracks, characterized in that, include: The syringe includes a barrel (1), a piston (2), a piston rod (3), and an elastic component. One end of the barrel (1) is provided with a dispensing hole (4). The piston (2) is movably connected inside the barrel (1) and fixedly connected to one end of the piston rod (3). The other end of the piston rod (3) passes through the other end of the barrel (1). The elastic component is used to drive the piston rod (3) to move toward the dispensing hole (4). A main pipe (5) and a plurality of branch pipes (6), at least one of the main pipe (5) and branch pipes (6) being made of a flexible material, the main pipe (5) being connected to a slurry outlet (4), and one end of the plurality of branch pipes (6) being connected to the main pipe (5); and A grouting seat is connected one-to-one with the other end of the multiple branch pipes (6). The grouting seat is used to fix the surface of the gap and guide the grout to flow into the gap.

2. The grouting device for joints and cracks in ballastless railway tracks according to claim 1, characterized in that, The elastic component includes: A drive cylinder (9) is movably inserted into the other end of the cylinder (1), and the other end of the piston rod (3) passes through the drive cylinder (9) and is fixedly and slidably connected to the drive cylinder (9); and An elastic element is used to drive the drive cylinder (9) to move toward the slurry outlet (4).

3. The grouting device for joints and cracks in ballastless railway tracks according to claim 2, characterized in that, The other end of the piston rod (3) passes through the bottom of the drive cylinder (9), and the piston rod (3) is provided with a plurality of connecting holes (10) at intervals along its length. The elastic component also includes a positioning pin (11) detachably connected to the wall of the drive cylinder (9), and the positioning pin (11) is detachably connected to the connection hole (10).

4. The grouting device for joints and cracks in ballastless railway tracks according to claim 3, characterized in that, The other end edge of the cylinder (1) extends outward to form a first stop (12), and the driving cylinder (9) is slidably connected to the first stop (12) along the axial direction of the cylinder (1); The cylinder wall of the drive cylinder (9) is sleeved on the periphery of the cylinder body (1). The drive cylinder (9) extends inward from the edge near the slurry outlet (4) to form a second flange (13). The second flange (13) is located on the side of the first flange (12) near the slurry outlet (4). The elastic element is used to drive the first stop (12) and the second stop (13) away from each other.

5. The grouting device for joints and cracks in ballastless railway tracks according to claim 4, characterized in that, The elastic element is a compression spring (14) sleeved on the periphery of the cylinder (1), and the two ends of the compression spring (14) are respectively connected to the first stop (12) and the second stop (13).

6. The grouting device for joints and cracks in ballastless railway tracks according to claim 5, characterized in that, The outer wall of the piston rod (3) is adapted to the through hole at the bottom of the drive cylinder (9). The outer wall of the piston rod (3) has two planes, and the connecting hole (10) passes through the two planes.

7. The grouting device for joints and cracks in ballastless railway tracks according to claim 4, characterized in that, The outer edge of the first stop (12) is provided with a sliding groove (15), and the inner side wall of the drive cylinder (9) is provided with a sliding protrusion (16). The sliding protrusion (16) is arranged along the axis of the cylinder (1), and the sliding protrusion (16) and the sliding groove (15) are slidably connected in a one-to-one correspondence.

8. The grouting device for joints and cracks in ballastless railway tracks according to claim 4, characterized in that, The other end of the piston rod (3) passes through the bottom of the drive cylinder (9) and is fixedly connected to a pressing handle (17).

9. The grouting device for joints and cracks in ballastless railway tracks according to any one of claims 1 to 8, characterized in that, The main pipe (5) and the branch pipe (6) are connected by threads, and the main pipe (5) and one end of the cylinder (1) are connected by threads.

10. The grouting device for joints and cracks in ballastless railway tracks according to any one of claims 1 to 8, characterized in that, The grouting base includes an integrally formed grouting pipe (7) and a base (8). The grouting pipe (7) and the base (8) are connected. The other end of the grouting pipe (7) is threadedly connected to the branch pipe (6). The base (8) has a hollow structure.

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