Simple bridge ballast blocking wall expansion joint reserving device
By designing detachable pre-installed components and cleaning devices, the problem of easy damage to polyethylene foam boards was solved, enabling stable pre-installation and reuse of expansion joints in bridge retaining walls, thus improving construction efficiency and cleanliness.
Patent Information
- Application Number
- CN202520183486.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-06
AI Technical Summary
The existing expansion joint reservation device for bridge retaining walls uses polyethylene foam boards, which are prone to deformation and damage and are difficult to reuse, resulting in low construction efficiency and a high damage rate of retaining walls.
A simple bridge retaining wall expansion joint reservation device is adopted, which includes reserved components. The reserved plate can be detached and reused by using components such as hydraulic lifting rod, hydraulic telescopic rod and clamping frame. It is also equipped with grinding and cleaning functions to ensure the stability and cleanliness of the reserved gap.
It enables the stable reservation and reuse of expansion joints in bridge retaining walls, reduces construction damage, improves construction efficiency, and keeps the reserved plates clean through the cleaning function to prevent impact on subsequent use.
Smart Images
Figure CN223824041U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bridge construction technology, and in particular to a simple bridge retaining wall expansion joint reservation device. Background Technology
[0002] Expansion joints in bridge retaining walls refer to the gaps of a certain width left between the retaining walls during bridge design to accommodate expansion and contraction caused by factors such as temperature changes and loads. These gaps are called expansion joints, and their existence ensures that the bridge will not be damaged by excessive stress during expansion and contraction, thus guaranteeing the safe operation of the bridge. Pre-installation devices are required to assist in the design of expansion joints in bridge retaining walls.
[0003] The current method for reserving expansion joints in bridge retaining walls is to use polyethylene foam boards as diaphragms. These boards are prone to deformation and damage and are for single use only. After the concrete is poured, the diaphragms need to be removed, which is difficult and can easily lead to damage to the retaining wall, increasing the repair rate and thus severely reducing construction efficiency. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a simple bridge retaining wall expansion joint reservation device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A simple bridge retaining wall expansion joint pre-reservation device includes a pre-reservation component. The pre-reservation component includes a base, a hydraulic lifting rod is provided on the top outer wall of the base, a fixing block is installed at the top of the hydraulic lifting rod, a first hydraulic telescopic rod is provided on one side outer wall of the fixing block, the telescopic end of one side of the first hydraulic telescopic rod can slide through the fixing block, an installation seat is installed at the end of the first hydraulic telescopic rod, a second hydraulic telescopic rod is installed on the installation seat, two sets of the second hydraulic telescopic rod are provided, symmetrically installed on the two sides outer walls of the installation seat, the telescopic end of one side of the second hydraulic telescopic rod can slide through the installation seat, a clamping frame is installed at the end of the second hydraulic telescopic rod, a second pre-reservation plate is provided on one side of the clamping frame, a pre-reservation groove is opened in the center of the second pre-reservation plate, two sets of symmetrically arranged first pre-reservation plates are provided on one side of the second pre-reservation plate, the first pre-reservation plates are opened with several sets of positioning holes, and semi-circular steel bar grooves are opened on the side of the two sets of first pre-reservation plates closest to each other. A moving component for moving the position and a supporting component for supporting and maintaining stability are provided on one side of the base.
[0007] As a further improvement of this utility model: the moving component includes omnidirectional wheels, and multiple sets of omnidirectional wheels are arranged and installed sequentially on the bottom outer wall of the base. A support frame is installed on one side of the base, and a handle is installed through the support frame. The handle is covered with a protective cover.
[0008] As a further embodiment of this utility model: the support component includes a mounting frame, and multiple sets of mounting frames are provided, which are respectively installed on the outer walls of both sides of the base. A hydraulic push rod is provided on the top outer wall of the mounting frame. The telescopic end of the bottom of the hydraulic push rod can slide through the mounting frame, and a foot pad is installed at the bottom of the hydraulic push rod.
[0009] As a further improvement of this utility model: a speed-regulating motor is fixedly installed on the top outer wall of the base by bolts, the output end of the speed-regulating motor is connected to a transmission shaft, and a grinding head is detachably installed on one end of the transmission shaft.
[0010] As a further embodiment of this utility model: a cleaning tank is fixedly installed on the top outer wall of the base by bolts, and a rotary motor is symmetrically installed on both sides of the outer wall of the cleaning tank by bolts. One end of the rotary motor is connected to a rotary shaft, and one end of the rotary shaft is rotatably connected to the cleaning tank. A paddle is installed on one end of the rotary shaft.
[0011] As a further improvement of this utility model: a drain outlet is connected to one side of the cleaning pool, and a sealing plug is installed at one end of the drain outlet, with the diameter of the tail end of the sealing plug being larger than the diameter of the drain outlet.
[0012] As a further embodiment of this utility model: a storage cabinet is fixed to the top outer wall of the base by bolts, multiple sets of partitions are provided on the inner wall of the storage cabinet, and a top cover is installed on the top of the storage cabinet.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. By setting two sets of symmetrical first and second reserved plates to form an expansion joint reserved device, which is installed on the ballast wall formwork, the expansion joint can be reserved during the pouring process. After the ballast wall is formed, it can be easily disassembled and reused. This solves the problem that the traditional method is prone to deformation when reserving expansion joints and cannot be disassembled and reused. It also prevents damage to the ballast wall and can effectively improve the construction efficiency.
[0015] 2. The grinding head can be rotated by a speed-regulating motor. The removed first and second reserved plates can be moved to contact the rotating grinding head for grinding, which can effectively remove attached impurities and solidified concrete, avoiding affecting subsequent use.
[0016] 3. Water can be added through the paddle. After water is added, the first and second reserved plates that have been polished are put in. After they are put in, the rotating motor is started to control the rotating shaft and the paddle to rotate. The rotation of the paddle agitates the water flow, and the water flow washes the first and second reserved plates, thereby thoroughly cleaning the polishing debris. Attached Figure Description
[0017] Figure 1This is a structural schematic diagram from the main view of a simple bridge ballast retaining wall expansion joint reservation device proposed in this utility model.
[0018] Figure 2 This is a schematic diagram of the cleaning part of a simple bridge ballast retaining wall expansion joint reservation device proposed in this utility model;
[0019] Figure 3 This is a structural schematic diagram of the support part of a simple bridge ballast retaining wall expansion joint reservation device proposed in this utility model;
[0020] Figure 4 This is a schematic diagram of the grinding part of a simple bridge ballast retaining wall expansion joint reservation device proposed in this utility model.
[0021] In the diagram: 1-base, 2-caster wheel, 3-storage cabinet, 4-hydraulic push rod, 5-foot pad, 6-mounting bracket, 7-cleaning pool, 8-rotary motor, 9-support frame, 10-hydraulic lifting rod, 11-first hydraulic telescopic rod, 12-fixing block, 13-mounting seat, 14-second hydraulic telescopic rod, 15-clamping frame, 16-first reserved plate, 17-second reserved plate, 18-drain outlet, 19-rotating shaft, 20-paddle blade, 21-speed regulating motor, 22-grinding head, 23-drive shaft. Detailed Implementation
[0022] The technical solution of this utility model will be further described in detail below with reference to specific embodiments.
[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0024] Example 1
[0025] A simple expansion joint reservation device for bridge retaining walls, such as Figure 1-4As shown, the system includes a reserved component, which includes a base 1. A hydraulic lifting rod 10 is fixed to the top outer wall of the base 1 by bolts. A fixing block 12 is installed at the top of the hydraulic lifting rod 10. A first hydraulic telescopic rod 11 is fixed to one side of the outer wall of the fixing block 12 by bolts. The telescopic end of the first hydraulic telescopic rod 11 is slidably inserted through the fixing block 12. A mounting seat 13 is installed at the end of the first hydraulic telescopic rod 11. A second hydraulic telescopic rod 14 is installed on the mounting seat 13. Two sets of the second hydraulic telescopic rod 14 are provided and symmetrically installed on both sides of the mounting seat 13. The wall, the telescopic end of the second hydraulic telescopic rod 14 is slidably installed through the mounting base 13, the end of the second hydraulic telescopic rod 14 is installed with a clamping frame 15, the clamping frame 15 is provided with a second reserved plate 17 on one side, the second reserved plate 17 is provided with a reserved groove in the center, the second reserved plate 17 is provided with two sets of symmetrically arranged first reserved plates 16 on one side, the first reserved plates 16 are provided with several sets of positioning holes, the two sets of first reserved plates 16 are respectively provided with semi-circular steel bar grooves on the side of the two sets of first reserved plates 16 near each other, the base 1 is provided with a moving component for moving position and a supporting component for supporting and maintaining stability on one side;
[0026] In use, the two sets of first reserved plates 16 can be combined and separated. After combination, the adjacent semi-circular rebar grooves can be combined into a circular rebar groove to hold the rebar. The dimensions of the first reserved plate 16 and the second reserved plate 17 are determined according to the dimensions of the bridge retaining wall. The retaining wall is formed by pouring concrete after the pre-embedded rebar is installed and the retaining wall formwork is installed. After the retaining wall formwork is installed, the two sets of first reserved plates 16 are installed on the retaining wall formwork and combined. After combination, an expansion joint reserved device is formed. The circular rebar groove holds the longitudinally embedded rebar, thus completing the combination and installation. After completion, align the positioning holes of the first reserved plate 16 with the screw holes on the retaining wall template, and tighten the bolts to complete the fixation. After fixing, insert the second reserved plate 17 vertically against the first reserved plate 16, and use its reserved groove to vertically hold the reinforcing steel bars to complete the installation and fixation, thereby reinforcing the first reserved plate 16. After installation, pour concrete through the retaining wall template to complete the reservation of the bridge retaining wall expansion joint. When removing the retaining wall template after forming, loosen the fixing bolts, pull the second reserved plate 17 upwards, and then separate the first reserved plate 16 to complete the disassembly. After disassembly, it can be reused, solving the problem of deformation and inability to disassemble and reuse in traditional methods when reserving expansion joints. It also prevents damage to the retaining wall, effectively improving construction efficiency. When installing the first reserved plate 16 or the second reserved plate 17, either the first reserved plate 16 or the second reserved plate 17 can be placed at the mounting base 13. The clamping frame 15 can be moved by controlling the movement of the two sets of second hydraulic telescopic rods 14 to clamp and fix the first reserved plate 16 or the second reserved plate 17. After fixing, the height can be adjusted by the hydraulic lifting rod 10. The first hydraulic telescopic rod 11 can be adjusted to position and install the first reserved plate 16 and the second reserved plate 17. When disassembly is required, the clamping frame 15 can hold the top of the second reserved plate 17 and the hydraulic lifting rod 10 can control the clamping frame 15 to rise, making it easy to pull out the second reserved plate 17. After completion, the clamping frame 15 can fix the first reserved plate 16, and the first hydraulic telescopic rod 11 can control one side of the first reserved plate 16 to remove it. With the assistance, the installation and disassembly of the first reserved plate 16 and the second reserved plate 17 can be made faster and more convenient to use.
[0027] The moving component includes casters 2, and multiple sets of casters 2 are arranged and installed sequentially on the bottom outer wall of the base 1. A support frame 9 is installed on one side of the base 1, and a handle is installed through the support frame 9. The handle is covered with a protective cover.
[0028] When in use, the device can be easily pushed or pulled by holding the handle. Pushing or pulling the device controls the universal wheels 2 to rotate in contact with the ground, thereby moving the device. The device can be moved quickly and easily as needed, making it more convenient to use.
[0029] The support assembly includes a mounting frame 6, and multiple sets of mounting frames 6 are respectively installed on the outer walls of both sides of the base 1. A hydraulic push rod 4 is fixed to the top outer wall of the mounting frame 6 by bolts. The telescopic end of the bottom of the hydraulic push rod 4 can slide through the mounting frame 6. A foot pad 5 is installed at the bottom of the hydraulic push rod 4.
[0030] When in use, after the device is moved to the work area, the hydraulic push rod 4 can control the foot pad 5 to fall to the ground and support the device. The device can be kept stable by supporting the device. At the same time, when the device is supported, the caster 2 can leave the ground to avoid unnecessary displacement caused by the caster 2.
[0031] In order to grind away the concrete and other impurities attached to the first reserved plate 16 and the second reserved plate 17 after removal, such as Figure 3 , 4 As shown, a speed-regulating motor 21 is fixedly installed on the top outer wall of the base 1 by bolts. The output end of the speed-regulating motor 21 is connected to a transmission shaft 23. A grinding head 22 is detachably installed on one end of the transmission shaft 23.
[0032] During use, the speed-regulating motor 21 can control the rotation of the transmission shaft 23 and the grinding head 22. The removed first reserved plate 16 and second reserved plate 17 can be moved to contact the rotating grinding head 22 for grinding, which can effectively remove attached impurities and solidified concrete, avoiding affecting subsequent use.
[0033] To clean up debris, such as Figure 1 , 2 As shown in Figure 4, a cleaning tank 7 is fixed to the top outer wall of the base 1 by bolts. Rotary motors 8 are symmetrically installed on both sides of the outer wall of the cleaning tank 7 by bolts. One end of the rotary motor 8 is connected to a rotating shaft 19. One end of the rotating shaft 19 is rotatably connected to the cleaning tank 7. A blade 20 is installed on one end of the rotating shaft 19.
[0034] During use, water can be added through the paddle 20. After adding water, the first reserved plate 16 and the second reserved plate 17 that have been polished are placed in. After placement, the rotary motor 8 is started to control the rotation of the rotating shaft 19 and the paddle 20. The rotation of the paddle 20 agitates the water flow, which washes the first reserved plate 16 and the second reserved plate 17, thereby thoroughly cleaning the polishing debris. After completion, the first reserved plate 16 and the second reserved plate 17 are taken out and dried for subsequent use.
[0035] For easy water changes, such as Figure 2 As shown, a drain outlet 18 is connected to one side of the cleaning pool 7, and a sealing plug is installed at one end of the drain outlet 18. The diameter of the tail end of the sealing plug is larger than the diameter of the drain outlet 18.
[0036] When in use, the sealing plug can be removed to drain the sewage through the drain outlet 18 after cleaning. After rinsing the cleaning tank 7, the plug can be put back into the drain outlet 18 and water can be added again to quickly change the water and make it more convenient to use.
[0037] Example 2
[0038] For ease of storing the first reserved plate 16 and the second reserved plate 17, refer to Figure 3 A simple bridge retaining wall expansion joint reservation device. This embodiment makes the following improvements compared to embodiment 1: the outer wall of the top of the base 1 is fixed with a storage cabinet 3 by bolts, the inner wall of the storage cabinet 3 is provided with multiple sets of partitions, and the top of the storage cabinet 3 is installed with a top cover.
[0039] When in use, the space inside the storage cabinet 3 can be evenly divided by the partition. The first reserved plate 16 and the second reserved plate 17 can be placed in the multiple spaces, so that they can be quickly retrieved when needed. The top cover can be used to close the storage cabinet 3 to prevent foreign objects from entering.
[0040] The above description is only a preferred embodiment of the present utility model. For parts that do not require creative effort in circuit control, signal control and transmission, please refer to the prior art. However, the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A simple bridge retaining wall expansion joint pre-reservation device, comprising pre-reservation components, characterized in that, The reserved component includes a base (1), on the top outer wall of the base (1) is provided with a hydraulic lifting rod (10), a fixing block (12) is installed at the top of the hydraulic lifting rod (10), a first hydraulic telescopic rod (11) is provided on one side of the outer wall of the fixing block (12), the telescopic end of the first hydraulic telescopic rod (11) is slidably inserted through the fixing block (12), a mounting seat (13) is installed at the end of the first hydraulic telescopic rod (11), a second hydraulic telescopic rod (14) is installed on the mounting seat (13), two sets of the second hydraulic telescopic rod (14) are provided, respectively symmetrically installed on the outer walls of both sides of the mounting seat (13), the second hydraulic telescopic rod... The telescopic end of the rod (14) can slide through the mounting base (13). A clamping frame (15) is installed at the end of the second hydraulic telescopic rod (14). A second reserved plate (17) is provided on one side of the clamping frame (15). A reserved groove is provided in the center of the second reserved plate (17). Two sets of symmetrically arranged first reserved plates (16) are provided on one side of the second reserved plate (17). Several sets of positioning holes are provided on the first reserved plates (16). Semi-circular steel bar grooves are provided on the side of the two sets of first reserved plates (16) closest to each other. A moving component for moving position and a supporting component for supporting and maintaining stability are provided on one side of the base (1).
2. The simplified bridge retaining wall expansion joint pre-reservation device according to claim 1, characterized in that, The moving component includes casters (2), and multiple sets of casters (2) are arranged and installed sequentially on the bottom outer wall of the base (1). A support frame (9) is installed on one side of the base (1), and a handle is installed through the support frame (9). The handle is covered with a protective cover.
3. A simplified bridge retaining wall expansion joint pre-reservation device according to claim 1, characterized in that, The support assembly includes a mounting frame (6), which is provided in multiple sets and is installed on the outer walls of both sides of the base (1). A hydraulic push rod (4) is provided on the top outer wall of the mounting frame (6). The telescopic end of the bottom of the hydraulic push rod (4) can slide through the mounting frame (6). A foot pad (5) is installed at the bottom of the hydraulic push rod (4).
4. A simplified bridge retaining wall expansion joint pre-reservation device according to claim 1, characterized in that, A speed-regulating motor (21) is fixedly installed on the top outer wall of the base (1) by bolts. The output end of the speed-regulating motor (21) is connected to a transmission shaft (23). A grinding head (22) is detachably installed on one end of the transmission shaft (23).
5. A simplified bridge retaining wall expansion joint pre-reservation device according to claim 1, characterized in that, The outer wall of the base (1) is fixed with a cleaning tank (7) by bolts. Rotary motors (8) are symmetrically installed on the outer walls of both sides of the cleaning tank (7) by bolts. One end of the rotary motor (8) is connected to a rotating shaft (19). One end of the rotating shaft (19) is rotatably connected to the cleaning tank (7). A blade (20) is installed on one end of the rotating shaft (19).
6. A simplified bridge ballast retaining wall expansion joint pre-reservation device according to claim 5, characterized in that, The cleaning pool (7) is connected to a drain outlet (18) on one side. A sealing plug is installed at one end of the drain outlet (18), and the diameter of the tail end of the sealing plug is larger than the diameter of the drain outlet (18).
7. A simplified bridge retaining wall expansion joint pre-reservation device according to claim 1, characterized in that, The base (1) has a storage cabinet (3) fixed to the top outer wall by bolts. The storage cabinet (3) has multiple partitions on the inner wall and a top cover installed on the top of the storage cabinet (3).