A road and bridge construction expansion joint grouting device and method
By integrating dust collection, mixing, and cleaning functions, the road and bridge construction expansion joint grouting equipment solves the problem of multiple equipment replacements in existing technologies, and realizes efficient and low-cost integrated construction of expansion joint cleaning and grouting, thereby improving construction quality and environmental cleanliness.
Patent Information
- Application Number
- CN202510208364.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-08-25
AI Technical Summary
In existing road and bridge construction, the cleaning and grouting process of expansion joints requires multiple equipment changes, which increases the difficulty and time cost of construction, and the equipment change process can easily affect the construction quality.
A grouting equipment integrating dust collection, mixing, and cleaning functions has been designed, including a guide rail, a vehicle body, a dust collection device, a mixing device, and a cleaning device. The brush is driven by a hydraulic cylinder to automatically adapt to the width of the expansion joint, and a ball and spring structure is used to prevent equipment wear, thus achieving integrated construction.
It improved construction efficiency, simplified the operation process, reduced construction difficulty and cost, ensured the cleaning quality, and reduced dust pollution.
Smart Images
Figure CN122629784A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of road and bridge construction technology, specifically to a grouting device and method for expansion joints in road and bridge construction. Background Technology
[0002] Expansion joints, also known as temperature joints, are structural joints in building structures designed to prevent cracking or damage caused by changes in climate temperature. Expansion joints are typically installed where the length of a building exceeds a certain limit, such as in bridges, houses, and roads.
[0003] Currently, most existing devices only have a single cleaning or grouting function, requiring multiple equipment or tool changes to complete the entire construction process. This not only increases the difficulty and time cost of construction, but may also affect the construction quality due to errors during equipment replacement. In view of this, we propose a grouting device and method for expansion joints in road and bridge construction. Summary of the Invention
[0004] The main objective of this invention is to provide a grouting device and method for expansion joints in road and bridge construction, which can solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention proposes a road and bridge construction expansion joint grouting device, comprising guide rails, multiple sets of which can be spliced according to the actual length of the expansion joint. A vehicle body is mounted above the guide rails, and a support frame is fixedly connected to the vehicle body. A dust collection device and a mixing device are mounted on the vehicle body, and a cleaning device is mounted on the support frame. A drive wheel is mounted on the outer wall of the vehicle body, driven by a motor to provide power for the movement of the vehicle. The cleaning device includes:
[0006] A hydraulic cylinder, wherein a rotating shaft is rotatably connected to the output end of the hydraulic cylinder, a cylinder is fixedly connected to the end of the rotating shaft, the rotating shaft passes through a gear and is slidably connected to the gear, and the gear is connected to a motor drive;
[0007] The cylinder has a rotating shaft rotatably connected to its inner wall. The rotating shaft has an arc-shaped groove. A lifting rod is slidably connected to the rotating shaft. A protrusion is fixedly connected to the outer wall of the lifting rod. The protrusion is slidably connected to the arc-shaped groove. A rotating block is rotatably connected to the lifting rod. A spring is fixedly connected to the outer wall of the rotating block. The rotating block is elastically connected to the inner wall of the rotating shaft through the spring. The lifting rod passes through the cylinder and is slidably connected to it. A brush is fixedly connected to the outer wall of the lifting rod. A roller is rotatably connected to the brush for abrading the brush. A fixing plate is fixedly connected to the inner wall of the cylinder. The fixing plate is penetrated by the rotating shaft and is rotatably connected to it.
[0008] A sliding plate is slidably connected to a locking rod. The locking rod is elastically connected to the inner wall of the sliding plate via a spring. The sliding plate is slidably connected to the rotating shaft through which a rotating shaft passes. A rotating plate is provided above the sliding plate. The rotating plate is rotatably connected to the rotating shaft through which a rotating shaft passes. The rotating plate has an arc-shaped groove and a locking groove.
[0009] Preferably, the arc-shaped groove is slidably connected to a sliding rod, the sliding rod passes through the cylinder and is slidably connected to the cylinder, and a brush is fixedly connected to the end of the sliding rod.
[0010] Preferably, the sliding rod has a groove, the sliding rod is slidably connected to the long rod, the long rod is slidably connected to the first brush, the long rod is slidably connected to the extrusion block, and the extrusion block is elastically connected to the inner wall of the sliding rod by the fourth spring.
[0011] Preferably, the extrusion block has an inclined groove, and an extrusion rod is provided directly below the inclined groove. The extrusion rod passes through the sliding rod and is slidably connected to the sliding rod. The extrusion rod is elastically connected to the inner wall of the sliding rod by a spring.
[0012] Preferably, a fixing rod is fixedly connected to the end of the long rod, and the fixing rod is slidably connected to the inner wall of the chute and the extrusion block.
[0013] Preferably, the inner wall of the long rod is provided with a ball bearing and a partition. A spring is fixedly connected to the outer wall of the partition. The end of the spring away from the partition is fixedly connected to the inner wall of the long rod. Through the action of centrifugal force, the ball bearing hits the partition, thereby causing the pull rod to apply an upward force to the sliding telescopic block, thereby releasing the limit of the long rod.
[0014] Preferably, a sliding telescopic block is slidably connected to the inner wall of the long rod, a through groove is provided at the upper end of the sliding telescopic block, a pull rod is slidably connected to the through groove, the pull rod is provided with an inclined surface for applying an upward force to the sliding telescopic block, the pull rod passes through the inner wall of the long rod and is slidably connected to the inner wall of the long rod, and the pull rod is fixedly connected to the outer wall of the partition.
[0015] Preferably, one end of the spring five is fixedly connected to the inner wall of the extrusion block, and the other end of the spring five is fixedly connected to the outer wall of the long rod. The extrusion block is provided with a limit groove.
[0016] Preferably, the discharge port of the mixing tank in the mixing device is fixedly connected to a conveying pipe, and the discharge port of the conveying pipe is fixedly connected to a spreading pipe.
[0017] Preferably, the method of using the road and bridge construction expansion joint grouting equipment includes the following steps:
[0018] S1. First, lay multiple sets of guide rails on both sides of the expansion joint, then place the vehicle body on the guide rails, then pour the paint raw materials into the mixing device, and start the mixing device so that the mixing blades inside it can mix the raw materials.
[0019] S2. Start the hydraulic cylinder so that the cylinder can carry brush one and brush two into the expansion joint. When brush two is squeezed, the lifting rod will move upward. During this process, the rotating shaft will drive the rotating plate to rotate, so that brush one moves towards the outer wall. When the long rod contacts the side wall of the expansion joint, the side wall of the expansion joint will squeeze the long rod, and the squeezing block will squeeze the squeezing rod, so that the squeezing rod moves downward. At the same time, the squeezing rod will drive the sliding plate to move downward, so that the locking rod disengages from the locking groove, thereby releasing the locking between the rotating shaft and the rotating plate, and then the sliding rod stops moving, so that brush one automatically adapts to the width of the expansion joint.
[0020] S3. When the motor drives the cylinder to rotate, the balls will roll under the action of centrifugal force, causing them to impact the partition and move. At this time, the pull rod will apply force to the sliding telescopic block, causing the sliding telescopic block to disengage from the limiting groove, thereby releasing the limit of the long rod. The long rod will then slide inside the extrusion block under the elastic force of spring five, thereby disengaging the long rod from the inner wall of the expansion joint, which can prevent the inner wall of the expansion joint from wearing the long rod during the rotation of brush one.
[0021] S4. Then start the drive wheel. At this time, the vehicle body will move on the guide rail under the action of the drive wheel. At this time, brush one and brush two will clean the inner wall of the expansion joint under the action of the vehicle body. At the same time, start the vacuuming device to vacuum the inside of the expansion joint. After cleaning the expansion joint several times, turn off the mixing device 4 and start the material conveying pipe to perform grouting treatment on the expansion joint.
[0022] This invention provides a grouting device for expansion joints in road and bridge construction. It has the following beneficial effects:
[0023] (1) The road and bridge construction expansion joint grouting equipment integrates a dust collection device, a mixing device and a cleaning device into one unit, realizing integrated construction of cleaning, dust collection and grouting. Construction personnel do not need to frequently change equipment or tools. They only need to start the corresponding devices in sequence according to the steps to complete all the work from cleaning to grouting. This not only improves construction efficiency, but also simplifies construction operation and reduces construction difficulty. At the same time, the use of the dust collection device reduces dust pollution and improves the cleanliness of the construction environment.
[0024] (2) When the hydraulic cylinder pushes the cylinder into the expansion joint, the second brush is squeezed and drives the rotating shaft to rotate, which in turn causes the first brush to automatically expand outward to adapt to expansion joints of different widths. At the same time, when the long rod contacts the side wall of the expansion joint, it can automatically stop expanding, ensuring that the brush and the side wall of the expansion joint are tightly fitted, which greatly improves the cleaning quality. Whether the expansion joint is narrow or wide, it can be thoroughly cleaned, providing a good foundation for subsequent grouting construction.
[0025] (3) The grouting equipment for expansion joints in this road and bridge construction features a long rod with ball bearings and springs. When the motor drives the cylinder to rotate, the ball bearings roll under centrifugal force and impact the partition, which in turn pushes the sliding expansion block to move via the pull rod. This design allows the long rod to automatically detach from the inner wall of the expansion joint under the elastic force of the spring, effectively preventing wear on the long rod from the inner wall of the expansion joint during the rotation of the brush. This not only extends the service life of the equipment but also reduces maintenance costs. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;
[0028] Figure 2 This is a schematic diagram of a portion of the three-dimensional structure of the present invention;
[0029] Figure 3 This is a three-dimensional structural diagram of the cleaning device of the present invention;
[0030] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the cylinder of the present invention;
[0031] Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure inside the cylinder of the present invention;
[0032] Figure 6 This is a schematic diagram of the three-dimensional structure of the rotating plate of the present invention;
[0033] Figure 7 This is a schematic diagram of the three-dimensional structure of the fixing plate of the present invention;
[0034] Figure 8 This is a schematic diagram of the three-dimensional cross-sectional structure of the sliding rod of the present invention;
[0035] Figure 9 For the present invention Figure 5 Schematic diagram of structure A in the middle;
[0036] Figure 10 For the present invention Figure 8 Schematic diagram of structure B in the middle;
[0037] Figure 11 For the present invention Figure 10 Schematic diagram of the structure;
[0038] Figure 12 This is a schematic diagram of the two-dimensional structure of the brush of the present invention.
[0039] Explanation of icon numbers:
[0040] 1. Guide rail; 2. Car body; 21. Support frame; 22. Hydraulic cylinder; 23. Motor; 24. Rotating shaft; 25. Cylinder; 251. Sliding plate; 2511. Locking rod; 2512. Spring 1; 252. Fixing plate; 253. Rotating plate; 2531. Arc groove 1; 2532. Locking groove; 26. Brush 1; 27. Rotating shaft; 271. Arc groove 2; 272. Spring 2; 273. Rotating block; 274. Lifting rod; 275. Brush 2; 276. Roller; 28. 281. Sliding rod; 282. Slide groove; 282. Long rod; 2821. Fixed rod; 2822. Spring three; 2823. Partition plate; 2824. Ball bearing; 2825. Sliding telescopic block; 2826. Through groove; 2827. Pull rod; 283. Spring four; 284. Extrusion block; 2841. Spring five; 2842. Limiting groove; 285. Spring six; 286. Extrusion rod; 29. Drive wheel; 3. Dust collection device; 4. Mixing device; 41. Conveying pipe; 42. Spreading pipe.
[0041] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0043] Please see Figures 1-12This invention proposes a grouting device for expansion joints in road and bridge construction, including a guide rail 1, a vehicle body 2 above the guide rail 1, a support frame 21 fixedly connected to the vehicle body 2, a dust collection device 3 and a mixing device 4 on the vehicle body 2, a cleaning device on the support frame 21, a drive wheel 29 on the outer wall of the vehicle body 2, and a material conveying pipe 41 fixedly connected to the discharge port of the mixing tank in the mixing device 4, and a material spreading pipe 42 fixedly connected to the discharge port of the material conveying pipe 41.
[0044] In an embodiment of the present invention, in order to clean expansion joints, the cleaning device specifically includes a hydraulic cylinder 22. A rotating shaft 24 is rotatably connected to the output end of the hydraulic cylinder 22. A cylinder 25 is fixedly connected to the end of the rotating shaft 24. The rotating shaft 24 passes through a gear and is slidably connected to the gear. The gear is driven by a motor 23. A rotating shaft 27 is rotatably connected to the inner wall of the cylinder 25. The rotating shaft 27 has an arc-shaped groove 271. A lifting rod 274 is slidably connected to the rotating shaft 27. A protrusion is fixedly connected to the outer wall of the lifting rod 274, and the protrusion is slidably connected to the arc-shaped groove 271. A rotating block 273 is rotatably connected to the lifting rod 274. A spring 272 is fixedly connected to the outer wall of the rotating block 273. The rotating block 273 is elastically connected to the inner wall of the rotating shaft 27 through the spring 272. Next, the lifting rod 274 passes through the cylinder 25 and is slidably connected to the cylinder 25. A second brush 275 is fixedly connected to the outer wall of the lifting rod 274. A roller 276 is rotatably connected to the second brush 275. A fixed plate 252 is fixedly connected to the inner wall of the cylinder 25. The fixed plate 252 is passed through by the rotating shaft 27 and is rotatably connected to the rotating shaft 27. A locking rod 2511 is slidably connected to the sliding plate 251. The locking rod 2511 is elastically connected to the inner wall of the sliding plate 251 through a spring 2512. The sliding plate 251 is passed through by the rotating shaft 27 and is slidably connected to the rotating shaft 27. A rotating plate 253 is provided above the sliding plate 251. The rotating plate 253 is passed through by the rotating shaft 27 and is rotatably connected to the rotating shaft 27. The rotating plate 253 has an arc-shaped groove 2531 and a locking groove 2532.
[0045] like Figures 3-6 As shown, when the hydraulic cylinder 22 is started, the rotating shaft 24, which is rotatably connected to the output end of the hydraulic cylinder 22, drives the cylinder 25 to move towards the bottom of the expansion joint. When the roller 276 contacts the bottom of the expansion joint, the bottom will apply a force to the lifting rod 274, causing the lifting rod 274 to move upward. During this process, the protrusion fixedly connected to the outer wall of the lifting rod 274 will slide along the inner wall of the arc groove 271. During this process, the protrusion will apply a force to the rotating shaft 27, causing the rotating shaft 27 to rotate. When the rotating shaft 27 rotates, the locking rod 2511 will apply a force to the locking groove 2532, causing the rotating plate 253 to rotate synchronously with the rotating shaft 27. When the rotating plate 253 rotates, the arc groove 2531 will apply a force to the sliding rod 28, causing the sliding rod 28 to drive the brush 26 to move outward.
[0046] During the outward movement of the brush 26 driven by the sliding rod 28, when the long rod 282 contacts the side wall of the expansion joint, the side wall of the expansion joint will exert a force on the long rod 282, causing the extrusion block 284 to slide on the inner wall of the sliding rod 28. During this process, the extrusion block 284 will extrude the extrusion rod 286, causing the extrusion rod 286 to move downward. At the same time, the spring 285 undergoes elastic deformation. During this process, the extrusion rod 286 will drive the sliding plate 251 to move downward. When the sliding plate 251 moves downward, the locking rod 2511 will disengage from the locking groove 2532, thereby releasing the engagement between the rotating shaft 27 and the rotating plate 253, and thus causing the sliding rod 28 to stop moving. This design allows the brush 26 to automatically adapt to the width of the expansion joint. Then, the motor 23 is started, causing the cylinder 25 to drive the brush 26 to rotate, thereby cleaning the inner wall of the expansion joint.
[0047] Furthermore, the arc-shaped groove 2531 is slidably connected to a sliding rod 28, which penetrates the cylinder 25 and is slidably connected to the cylinder 25. A brush 26 is fixedly connected to the end of the sliding rod 28. The sliding rod 28 has a sliding groove 281. The sliding rod 28 is penetrated by a long rod 282 and is slidably connected to the long rod 282. The long rod 282 penetrates the brush 26 and is slidably connected to the brush 26. The long rod 282 penetrates the extrusion block 284 and is slidably connected to the extrusion block 284. The extrusion block 284 is elastically connected to the inner wall of the sliding rod 28 through a spring 283. One end of a spring 2841 is fixedly connected to the inner wall of the extrusion block 284. The other end of the spring 2841 is fixedly connected to the outer wall of the long rod 282. The extrusion block 284 has a limit groove 2842.
[0048] Furthermore, the extrusion block 284 has an inclined groove, and an extrusion rod 286 is provided directly below the inclined groove. The extrusion rod 286 passes through the sliding rod 28 and is slidably connected to the sliding rod 28. The extrusion rod 286 is elastically connected to the inner wall of the sliding rod 28 through a spring 285.
[0049] Furthermore, a fixed rod 2821 is fixedly connected to the end of the long rod 282. The fixed rod 2821 is slidably connected to the inner wall of the slide groove 281 and the extrusion block 284. The inner wall of the long rod 282 is provided with a ball bearing 2824 and a partition 2823. A spring 2822 is fixedly connected to the outer wall of the partition 2823. The end of the spring 2822 away from the partition 2823 is fixedly connected to the inner wall of the long rod 282. A sliding telescopic block 2825 is slidably connected to the inner wall of the long rod 282. A through groove 2826 is opened at the upper end of the sliding telescopic block 2825. A pull rod 2827 is slidably connected to the through groove 2826. The pull rod 2827 passes through the inner wall of the long rod 282 and is slidably connected to the inner wall of the long rod 282. The pull rod 2827 is fixedly connected to the outer wall of the partition 2823.
[0050] like Figure 8 , Figure 9 and Figure 11As shown, when the motor 23 drives the cylinder 25 to rotate, the ball bearings 2824 will roll under the action of centrifugal force, causing them to impact the partition 2823 and causing it to move. When the partition 2823 moves, the pull rod 2827, which is fixedly connected to the partition 2823, moves synchronously. When the pull rod 2827 moves, it applies a force to the sliding telescopic block 2825, causing it to move upward. At the same time, the sliding telescopic block 2825 will disengage from the limiting groove 2842, thereby releasing the limit of the long rod 282. At this time, the long rod 282 will slide inside the extrusion block 284 under the elastic force of the spring 2841, thus causing it to disengage from the inner wall of the expansion joint. This prevents the inner wall of the expansion joint from wearing the long rod 282 during the rotation of the brush 26.
[0051] The present invention discloses a method for using a grouting device for expansion joints in road and bridge construction, comprising the following steps:
[0052] S1. First, lay multiple sets of guide rails 1 on both sides of the expansion joint, then place the vehicle body 2 on the guide rails 1, then pour the paint raw material into the mixing device 4, and start the mixing device 4 so that the mixing blades inside it can mix the raw material.
[0053] S2. Start the hydraulic cylinder 22, so that the cylinder 25 drives the brush 1 26 and brush 275 into the expansion joint. When brush 275 is squeezed, the lifting rod 274 will move upward. During this process, the rotating shaft 27 will drive the rotating plate 253 to rotate, so that brush 1 26 moves to the outer wall. When the long rod 282 contacts the side wall of the expansion joint, the side wall of the expansion joint will squeeze the long rod 282. The squeezing block 284 will squeeze the squeezing rod 286, so that the squeezing rod 286 moves downward. At the same time, the squeezing rod 286 will drive the sliding plate 251 to move downward, so that the locking rod 2511 disengages from the locking groove 2532, thereby releasing the locking between the rotating shaft 27 and the rotating plate 253, and thus the sliding rod 28 stops moving, so that brush 1 26 automatically adapts to the width of the expansion joint.
[0054] S3. When the motor 23 drives the cylinder 25 to rotate, the ball bearing 2824 will roll under the action of centrifugal force, causing the ball bearing 2824 to hit the partition 2823 and causing the partition 2823 to move. At this time, the pull rod 2827 will apply force to the sliding telescopic block 2825, causing the sliding telescopic block 2825 to disengage from the limiting groove 2842, thereby releasing the limitation of the long rod 282. At this time, the long rod 282 will slide inside the extrusion block 284 under the elastic force of the spring 2841, thereby causing the long rod 282 to disengage from the inner wall of the expansion joint, which can prevent the inner wall of the expansion joint from wearing the long rod 282 during the rotation of the brush 26.
[0055] S4. Then start the drive wheel 29. At this time, the vehicle body 2 will move on the guide rail 1 under the action of the drive wheel 29. At this time, the brush 1 26 and brush 2 275 will clean the inner wall of the expansion joint under the action of the vehicle body 2. At the same time, the vacuuming device 3 will be started to vacuum the inside of the expansion joint. After cleaning the expansion joint several times, the mixing device 4 will be turned off, and the material conveying pipe 41 will be started to grout the expansion joint.
[0056] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.
Claims
1. A grouting device for expansion joints in road and bridge construction, comprising a guide rail (1), characterized in that: A vehicle body (2) is provided above the guide rail (1). A support frame (21) is fixedly connected to the vehicle body (2). A dust collection device (3) and a stirring device (4) are provided on the vehicle body (2). A cleaning device is provided on the support frame (21). A drive wheel (29) is provided on the outer wall of the vehicle body (2). The cleaning device includes: A hydraulic cylinder (22) is rotatably connected to a rotating shaft (24) at its output end. A cylinder (25) is fixedly connected to the end of the rotating shaft (24). The rotating shaft (24) passes through a gear and is slidably connected to the gear. The gear is driven by a motor (23). A cylindrical body (25) has a rotating shaft (27) rotatably connected to its inner wall. The rotating shaft (27) has an arc-shaped groove (271). A lifting rod (274) is slidably connected to the rotating shaft (27). A protrusion is fixedly connected to the outer wall of the lifting rod (274). The protrusion is slidably connected to the arc-shaped groove (271). A rotating block (273) is rotatably connected to the lifting rod (274). A spring (272) is fixedly connected to the outer wall of the rotating block (273). Block (273) is elastically connected to the inner wall of rotating shaft (27) via spring two (272). The lifting rod (274) passes through the cylinder (25) and is slidably connected to the cylinder (25). Brush two (275) is fixedly connected to the outer wall of the lifting rod (274). Roller (276) is rotatably connected to brush two (275). Fixed plate (252) is fixedly connected to the inner wall of the cylinder (25). The fixed plate (252) is passed through by rotating shaft (27) and is rotatably connected to rotating shaft (27). A sliding plate (251) is slidably connected to a locking rod (2511). The locking rod (2511) is elastically connected to the inner wall of the sliding plate (251) by a spring (2512). The sliding plate (251) is penetrated by a rotating shaft (27) and slidably connected to the rotating shaft (27). A rotating plate (253) is provided above the sliding plate (251). The rotating plate (253) is penetrated by the rotating shaft (27) and rotatably connected to the rotating shaft (27). The rotating plate (253) has an arc-shaped groove (2531) and a locking groove (2532).
2. The grouting equipment for expansion joints in road and bridge construction according to claim 1, characterized in that: The arc-shaped groove (2531) is slidably connected to a sliding rod (28), the sliding rod (28) passes through the cylinder (25) and is slidably connected to the cylinder (25), and a brush (26) is fixedly connected to the end of the sliding rod (28).
3. The grouting equipment for expansion joints in road and bridge construction according to claim 2, characterized in that: The sliding rod (28) has a groove (281) through it. The sliding rod (28) is slidably connected to the long rod (282) through it. The long rod (282) is slidably connected to the first brush (26) through it. The long rod (282) is slidably connected to the first brush (26) through it. The long rod (282) is slidably connected to the extrusion block (284) through it. The extrusion block (284) is elastically connected to the inner wall of the sliding rod (28) through the fourth spring (283).
4. The grouting equipment for expansion joints in road and bridge construction according to claim 3, characterized in that: The extrusion block (284) has an inclined groove, and an extrusion rod (286) is provided directly below the inclined groove. The extrusion rod (286) passes through the sliding rod (28) and is slidably connected to the sliding rod (28). The extrusion rod (286) is elastically connected to the inner wall of the sliding rod (28) through a spring (285).
5. The grouting equipment for expansion joints in road and bridge construction according to claim 3, characterized in that: The end of the long rod (282) is fixedly connected to a fixing rod (2821), and the fixing rod (2821) is slidably connected to the inner wall of the groove (281) and the extrusion block (284).
6. The grouting equipment for expansion joints in road and bridge construction according to claim 3, characterized in that: The inner wall of the long rod (282) is provided with a ball bearing (2824) and a partition (2823). A spring (2822) is fixedly connected to the outer wall of the partition (2823). The end of the spring (2822) away from the partition (2823) is fixedly connected to the inner wall of the long rod (282).
7. The grouting equipment for expansion joints in road and bridge construction according to claim 6, characterized in that: The inner wall of the long rod (282) is slidably connected to a sliding telescopic block (2825). The upper end of the sliding telescopic block (2825) is provided with a through groove (2826). The through groove (2826) is slidably connected to a pull rod (2827). The pull rod (2827) passes through the inner wall of the long rod (282) and is slidably connected to the inner wall of the long rod (282). The pull rod (2827) is fixedly connected to the outer wall of the partition (2823).
8. The grouting equipment for expansion joints in road and bridge construction according to claim 3, characterized in that: One end of a spring five (2841) is fixedly connected to the inner wall of the extrusion block (284), and the other end of the spring five (2841) is fixedly connected to the outer wall of the long rod (282). The extrusion block (284) has a limit groove (2842).
9. The grouting equipment for expansion joints in road and bridge construction according to claim 1, characterized in that: The mixing device (4) has a conveying pipe (41) fixedly connected to the discharge port of the mixing tank, and a spreading pipe (42) fixedly connected to the discharge port of the conveying pipe (41).
10. The method of using the grouting equipment for expansion joints in road and bridge construction as described in claims 1-9, characterized in that, Includes the following steps: S1. First, lay multiple sets of guide rails (1) on both sides of the expansion joint, then place the vehicle body (2) on the guide rails (1), then pour the paint raw material into the mixing device (4), and start the mixing device (4) so that the mixing blades inside it can mix the raw material. S2. Start the hydraulic cylinder (22) so that the cylinder (25) drives the first brush (26) and the second brush (275) into the expansion joint. When the second brush (275) is squeezed, the lifting rod (274) will move upward. During this process, the rotating shaft (27) will drive the rotating plate (253) to rotate, so that the first brush (26) moves to the outer wall. When the long rod (282) contacts the side wall of the expansion joint, the side wall of the expansion joint will squeeze the long rod (282), and the squeezing block (284) will squeeze the squeezing rod (286), so that the squeezing rod (286) moves downward. At the same time, the squeezing rod (286) will drive the sliding plate (251) to move downward, so that the locking rod (2511) is disengaged from the locking groove (2532), thereby releasing the locking between the rotating shaft (27) and the rotating plate (253), and then the sliding rod (28) stops moving, so that the first brush (26) automatically adapts to the width of the expansion joint. S3. When the motor (23) drives the cylinder (25) to rotate, the ball (2824) will roll under the action of centrifugal force, so that the ball (2824) will hit the partition (2823), causing the partition (2823) to move. At this time, the pull rod (2827) will apply force to the sliding telescopic block (2825), causing the sliding telescopic block (2825) to disengage from the limiting groove (2842), thereby releasing the limit of the long rod (282). At this time, the long rod (282) will slide inside the extrusion block (284) under the elastic force of the spring five (2841), thereby causing the long rod (282) to disengage from the inner wall of the expansion joint, which can prevent the inner wall of the expansion joint from wearing the long rod (282) during the rotation of the brush one (26). S4. Then start the drive wheel (29). At this time, the vehicle body (2) will move on the guide rail (1) under the action of the drive wheel (29). At this time, the first brush (26) and the second brush (275) will clean the inner wall of the expansion joint under the action of the vehicle body (2). At the same time, start the vacuuming device (3) to vacuum the inside of the expansion joint. After cleaning the expansion joint several times, turn off the mixing device 4 and start the conveying pipe (41) to grout the expansion joint.