Supporting and connecting structure for roads, bridges and tunnels
Through the frame and hydraulic cylinder drive components, the arc-shaped structural surface of the road bridge and tunnel support connection structure is easily supported and disassembled, solving the problem of poor convenience in the prior art and improving operational convenience and adaptability.
Patent Information
- Application Number
- CN202422674005.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-11-04
AI Technical Summary
The existing road bridge and tunnel support connection structure is not convenient for convenient linkage adjustment of support to the arc-shaped structural surface, it is difficult to control electric, inconvenient to move in and out, and poor adaptability to modular splicing, which affects the labor intensity and convenience of manual assembly.
It adopts components such as frame, support legs, telescopic legs, electric wheels, hydraulic cylinders and hinged buckles. Through the hydraulic cylinder driving and electric wheel movement, the arc structure is easily supported and disassembled, and the arc structure surfaces of different lengths are modularly spliced.
It realizes convenient linkage adjustment support for arc-shaped structural surfaces, and the electric control is convenient to move, reducing the labor intensity of manual assembly, and improving operational convenience and adaptability.
Smart Images

Figure CN223177538U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of support connection structures, in particular to a support connection structure for road bridges and tunnels. Background Technique
[0002] The road bridge and tunnel structure is an important part of the modern transportation system, carrying the traffic needs of a large number of vehicles and pedestrians. However, due to long-term use and the influence of various external factors, these structures face various disease problems. These diseases not only seriously affect the smoothness of traffic, but also pose a threat to the safety and stability of the structure. For road bridge and tunnel structures, crack and deformation diseases are common and very serious problems. These diseases usually appear in parts such as bridge piers, pier caps and bridge decks, resulting in structural instability and reduced strength. The reasons for cracks and deformations may include earthquakes, temperature changes, material aging, etc.
[0003] As disclosed in a support connection structure for road bridges and tunnels with the authorization announcement number CN221589303U, it includes a support wall. A matching block is movably connected to the outside of the support wall. An installation block is movably connected to the top of the matching block. A connection block is movably connected to the right side of the installation block. A support assembly is movably connected to the inside of the support wall. The front side of the top of the installation rod is fixedly connected to the bottom of the second support column;
[0004] Although it realizes that the user connects the support wall with the matching block, then installs the installation rod between the support walls through the installation plate, makes the first support column fixed at the top of the installation rod and the second support column ready to be connected with the matching block, then the user plugs and fixes the installation block with the top of the matching block. At the same time, the matching plates fixed at the tops of the first support column and the second support column are in contact with the bottom of the installation block. Finally, the user makes an overall fixation. The user bolts the installation block and the matching block to reinforce the stability of the support of the installation rod, and bolts the matching plate and the installation block to reinforce the stability of the plug connection between the installation block and the matching block;
[0005] However, it does not solve the problem that the existing such support connection structures are generally not conducive to the convenient linkage adjustment and support of the arc-shaped structural surface during use, are not convenient for electrically controlling the transmission and movement of each structure, are not convenient for convenient moving in and out for support and disassembly, are not convenient for modular splicing to adapt to different lengths of arc-shaped structural surfaces, greatly affecting the labor intensity of manual assembly and connection and the convenience during operation and use. Summary of the Utility Model
[0006] The purpose of the present utility model is to provide a support connection structure for road bridges and tunnels, so as to solve the problems raised in the above background technology that the support connection structure is not convenient for the convenient linkage adjustment and support of the arc-shaped structural surface, not convenient for electrically controlling the transmission and movement of each structure, not convenient for the convenient insertion and removal of support, not convenient for modular splicing to adapt to different lengths of arc-shaped structural surfaces, affecting the labor intensity of manual assembly and connection, and affecting the convenience during operation and use.
[0007] To solve the above technical problems, the present utility model provides the following technical solutions:
[0008] A support connection structure for road bridges and tunnels, including a frame and support legs. The bottom ends of the frame are symmetrically installed with support legs. The bottom ends of the support legs are all slidably installed with telescopic legs. The bottom ends of the telescopic legs are all installed with walking frames. The bottom ends of the walking frames are all installed with two groups of electric wheels. A central section is arranged outside the frame. Both ends of the central section are installed with top arc sections. The bottom ends of the top arc sections are all installed with column plates, and the column plates are all connected to the frame. On the outside of the frame on one side of the top arc section, upper arc sections are symmetrically arranged. On the outside of the frame on one side of the upper arc section, middle arc sections are symmetrically arranged. On the outside of the frame on one side of the middle arc section, lower arc sections are symmetrically arranged. Lower connecting blocks are all installed on the inner walls of the lower arc sections. Middle connecting blocks are all installed on the inner walls of the middle arc sections.
[0009] Optionally, lower hinge buckles are all installed at one ends of the upper arc sections close to the top arc sections. Upper hinge buckles are all installed at one ends of the top arc sections close to the upper arc sections.
[0010] Optionally, hinge shafts are all arranged on one sides of the upper hinge buckles close to the lower hinge buckles, and the upper hinge buckles are movably connected to the lower hinge buckles through the hinge shafts.
[0011] Optionally, fourth hydraulic cylinders are all arranged at the bottom ends of the top arc sections. Rear clamping seats are all installed at one ends of the fourth hydraulic cylinders close to the top arc sections, and the fourth hydraulic cylinders are connected to the top arc sections through the rear clamping seats.
[0012] Optionally, front clamping seats are all installed at one ends of the fourth hydraulic cylinders close to the upper arc sections, and the fourth hydraulic cylinders are movably connected to the upper arc sections through the front clamping seats.
[0013] Optionally, third hydraulic cylinders are all movably installed on the outer walls of the frame on one sides of the middle connecting blocks, and the third hydraulic cylinders are all movably connected to the middle connecting blocks.
[0014] Optionally, second hydraulic cylinders are all movably installed on the outer walls of the frame on one sides of the lower connecting blocks, and the second hydraulic cylinders are all movably connected to the lower connecting blocks.
[0015] Optionally, adapter blocks are installed on the outer walls of both sides of the telescopic legs below the support legs. First hydraulic cylinders are installed on the outer walls of the support legs above the adapter blocks. Push rods are installed at the output ends of the first hydraulic cylinders, and the push rods are connected to the adapter blocks.
[0016] Optionally, a connection groove is provided inside the frame, and a connecting plate is installed on the side wall of the frame on one side of the connection groove.
[0017] Optionally, locking pins are symmetrically installed at the top of the frame above the connection groove, and the locking pins extend into the interior of the connection groove.
[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: This support connection structure not only realizes the convenient linkage adjustment support of the road and bridge tunnel support connection structure for the arc-shaped structural surface, facilitates the electric control of each structure for transmission and movement, facilitates the convenient movement in for support and movement out for disassembly, facilitates the modular splicing to adapt to different lengths of arc-shaped structural surfaces, but also reduces the labor intensity of manual assembly and connection, and improves the convenience of operation and use of the road and bridge tunnel support connection structure.
[0019] (1) When it is necessary to support the arc-shaped structure of the road and bridge tunnel, the electric wheels drive the walking frame to move. With the cooperation of multiple walking frames, the frame is moved to a suitable position. The first hydraulic cylinder drives the push rod to move, and the push rod drives the telescopic leg to slide inside the support leg through the adapter block, so as to lift the support leg, frame, column plate, and central section to a high position. The central section drives the top arc section to move synchronously. The second hydraulic cylinder drives the lower arc section to move through the lower connecting block. The third hydraulic cylinder drives the middle arc section to move through the middle connecting block. The top arc section supports the fourth hydraulic cylinder through the rear card seat, and the top arc section supports the upper hinge buckle. The fourth hydraulic cylinder drives the upper arc section and the lower hinge buckle to rotate around the hinge axis through the front card seat. The central section, top arc section, upper arc section, middle arc section, and lower arc section form an arc-shaped support structure to facilitate the arc-shaped support. When the support arm needs to be disassembled, the second hydraulic cylinder, third hydraulic cylinder, and fourth hydraulic cylinder are operated in reverse to facilitate the separation of the lower connecting block, middle arc section, and upper arc section from the outside. The first hydraulic cylinder is operated in reverse to lower the support leg, frame, and column plate by a certain height to facilitate the separation of the central section and top arc section from the outside, and it is convenient to move out under the drive of the electric wheels. It realizes the convenient linkage adjustment support of the road and bridge tunnel support connection structure for the arc-shaped structural surface, facilitates the electric control of each structure for transmission and movement, facilitates the convenient movement in for support and movement out for disassembly, reduces the labor intensity of manual assembly and connection, and improves the convenience of operation and use of the road and bridge tunnel support connection structure.
[0020] (2) When long - length support is required, multiple sets of frames are spliced together. At this time, the connecting plate of one set of frames is inserted into the connecting groove of another set of frames, and the two sets of connecting plates and connecting grooves are fixed with locking pins, which facilitates the splicing of multiple sets of road - bridge - tunnel support connection structures for long - length support use, realizes the convenient splicing of the road - bridge - tunnel support connection structure for long - length support use, and is convenient for modular splicing to adapt to different length and arc - shaped structural surfaces. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the description, further serve to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.
[0022] Figure 1 is a three - dimensional structure schematic diagram of the present invention;
[0023] Figure 2 is a front - view structure schematic diagram of the present invention;
[0024] Figure 3 is a three - dimensional structure schematic diagram of the frame of the present invention;
[0025] Figure 4 is a three - dimensional structure schematic diagram of the column plate of the present invention;
[0026] Figure 5 is a three - dimensional structure schematic diagram of the support leg of the present invention;
[0027] Figure 6 is a three - dimensional exploded structure schematic diagram of the upper arc section of the present invention;
[0028] Figure 7 is a three - dimensional enlarged structure schematic diagram of the fourth hydraulic cylinder of the present invention.
[0029] [Reference Numerals]
[0030] 1. Frame; 2. Support leg; 3. Telescopic leg; 4. Walking frame; 5. Electric wheel; 6. Adapter block; 7. Push rod; 8. First hydraulic cylinder; 9. Second hydraulic cylinder; 10. Lower connecting block; 11. Lower arc section; 12. Third hydraulic cylinder; 13. Middle connecting block; 14. Middle arc section; 15. Rear card seat; 16. Fourth hydraulic cylinder; 17. Front card seat; 18. Upper arc section; 19. Lower hinge buckle; 20. Hinge shaft; 21. Upper hinge buckle; 22. Top arc section; 23. Central section; 24. Connecting plate; 25. Locking pin; 26. Connecting groove; 27. Column plate.
[0031] As shown in the figure, in order to clearly show the structure of the embodiments of the present utility model, specific structures and devices are marked in the figure. However, this is only for illustrative purposes and is not intended to limit the present utility model to this specific structure, device, and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed implementation mode
[0032] The following will describe in detail a road bridge and tunnel support connection structure provided by the present utility model with reference to the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present utility model.
[0033] It should be noted that in the specification, the mention of "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. indicates that the described embodiment may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when combining embodiments to describe specific features, structures, or characteristics, the implementation of such features, structures, or characteristics in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.
[0034] Generally, terms can be understood at least in part from their use in the context. For example, at least in part depending on the context, the term "one or more" used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather, at least in part depending on the context, can allow for the existence of other factors that may not be explicitly described.
[0035] It can be understood that the meanings of "on...", "above...", and "overhead of..." in the present utility model should be interpreted in the broadest manner, such that "on..." not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above..." or "overhead of..." not only means "above" or "overhead of" something, but also can include the meaning of being "above" or "overhead of" something with no intervening features or layers therebetween.
[0036] In addition, spatial relative terms such as "under", "below", "lower part", "above", "upper part", etc. may be used in this text for convenience of description to describe the relationship between one element or feature and another or more elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device may be oriented in other ways, and the spatial relative descriptive terms used in this text may be similarly interpreted accordingly.
[0037] As Figures 1 to 7 shown, an embodiment of the present utility model provides a road bridge and tunnel support connection structure, which includes a frame 1 and support legs 2. Support legs 2 are symmetrically installed at the bottom end of the frame 1. Telescopic legs 3 are slidably installed at the bottom ends of the support legs 2. Walking frames 4 are installed at the bottom ends of the telescopic legs 3. Two groups of electric wheels 5 are installed at the bottom ends of the walking frames 4. A central section 23 is arranged outside the frame 1. Top arc sections 22 are installed at both ends of the central section 23. Column plates 27 are installed at the bottom ends of the top arc sections 22, and the column plates 27 are all connected to the frame 1. Upper arc sections 18 are symmetrically arranged outside the frame 1 on one side of the top arc section 22. Middle arc sections 14 are symmetrically arranged outside the frame 1 on one side of the upper arc section 18. Lower arc sections 11 are symmetrically arranged outside the frame 1 on one side of the middle arc section 14. Lower connecting blocks 10 are installed on the inner walls of the lower arc sections 11. Middle connecting blocks 13 are installed on the inner walls of the middle arc sections 14;
[0038] Lower hinge buckles 19 are installed at one ends of the upper arc sections 18 close to the top arc sections 22. Upper hinge buckles 21 are installed at one ends of the top arc sections 22 close to the upper arc sections 18. Hinge shafts 20 are arranged on one side of the upper hinge buckles 21 close to the lower hinge buckles 19, and the upper hinge buckles 21 are movably connected to the lower hinge buckles 19 through the hinge shafts 20;
[0039] Fourth hydraulic cylinders 16 are arranged at the bottom ends of the top arc sections 22. Rear clamping seats 15 are installed at one ends of the fourth hydraulic cylinders 16 close to the top arc sections 22, and the fourth hydraulic cylinders 16 are connected to the top arc sections 22 through the rear clamping seats 15;
[0040] Front clamping seats 17 are installed at one ends of the fourth hydraulic cylinders 16 close to the upper arc sections 18, and the fourth hydraulic cylinders 16 are movably connected to the upper arc sections 18 through the front clamping seats 17. Third hydraulic cylinders 12 are movably installed on the outer walls of the frame 1 on one side of the middle connecting blocks 13, and the third hydraulic cylinders 12 are movably connected to the middle connecting blocks 13;
[0041] Second hydraulic cylinders 9 are movably installed on the outer walls of the frame 1 on one side of the lower connecting blocks 10, and the second hydraulic cylinders 9 are movably connected to the lower connecting blocks 10;
[0042] Adapter blocks 6 are installed on the outer walls of both sides of the telescopic legs 3 below the support legs 2, and first hydraulic cylinders 8 are installed on the outer walls of the support legs 2 above the adapter blocks 6. Push rods 7 are installed at the output ends of the first hydraulic cylinders 8, and the push rods 7 are connected to the adapter blocks 6.
[0043] When it is necessary to support the arc structure of the road bridge and tunnel, the electric wheel 5 drives the walking frame 4 to move, and with the cooperation of multiple groups of walking frames 4, the frame 1 is moved to the appropriate position, and the first hydraulic cylinder 8 drives the push rod 7 to move, and the push rod 7 drives the telescopic leg 3 to slide inside the support leg 2 through the adapter block 6 to lift the support leg 2, frame 1, column plate 27, and center section 23 to a high position, and the center section 23 drives the top arc section 22 to move synchronously. Under the support of the second hydraulic cylinder 9 and the third hydraulic cylinder 12 by the frame 1, the second hydraulic cylinder 9 drives the lower arc section 11 to move through the lower connecting block 10, and the third hydraulic cylinder 12 drives the middle arc section 14 to move through the middle connecting block 13. The top arc section 22 supports the fourth hydraulic cylinder 16 through the rear seat 15, and the top arc section 22 supports the upper hinge buckle 21. The fourth hydraulic cylinder 16 drives the upper arc section 18 and the lower hinge buckle 19 through the front seat 17 with the hinge shaft 20 as the The shaft rotates, and the center section 23, the top arc section 22, the upper arc section 18, the middle arc section 14, and the lower arc section 11 form an arc-shaped support structure to facilitate arc-shaped support. When the support arm needs to be disassembled, the second hydraulic cylinder 9, the third hydraulic cylinder 12, and the fourth hydraulic cylinder 16 are operated in reverse to facilitate the lower connecting block 10, the middle arc section 14, and the upper arc section 18 to be separated from the outside. The first hydraulic cylinder 8 is operated in reverse to lower the support leg 2, the frame 1, and the column plate 27 to a certain height to facilitate the center section 23 and the top arc section 22 to be separated from the outside. They are conveniently moved out under the drive of the electric wheel 5, thereby realizing the convenient linkage adjustment support of the road bridge and tunnel support connection structure for the arc-shaped structural surface, facilitating the electric control of each structure to carry out transmission movement, facilitating convenient support in and out and disassembly, reducing the labor intensity of manual assembly and connection, and improving the convenience of operation and use of the road bridge and tunnel support connection structure.
[0044] like Figures 3 to 6 As shown, a connecting groove 26 is provided inside the frame 1, a connecting plate 24 is installed on the side wall of the frame 1 on one side of the connecting groove 26, and locking pins 25 are symmetrically installed on the top of the frame 1 above the connecting groove 26, and the locking pins 25 all extend into the interior of the connecting groove 26;
[0045] When long - length support is required, multiple sets of the frame 1 are spliced together. At this time, the connecting plate 24 of one set of the frame 1 is inserted into the connecting groove 26 of another set of the frame 1, and the two sets of the connecting plate 24 and the connecting groove 26 are fixed by a locking pin 25, which facilitates the splicing of multiple sets of road - bridge - tunnel support connection structures for use, facilitates long - length support, realizes the convenient splicing of the road - bridge - tunnel support connection structure for long - length support, and is convenient for modular splicing to adapt to different length arc - shaped structural surfaces.
[0046] The working principle of the present utility model is as follows: First, when supporting the arc - shaped structure of the road - bridge - tunnel, the electric wheel 5 drives the walking frame 4 to move. With the cooperation of multiple sets of walking frames 4, the frame 1 is moved to a suitable position. The first hydraulic cylinder 8 drives the push rod 7 to move, and the push rod 7 drives the telescopic leg 3 to slide inside the support leg 2 through the adapter block 6, so as to lift the support leg 2, the frame 1, the column plate 27, and the central section 23 to a high position. The central section 23 drives the top arc section 22 to move synchronously. The second hydraulic cylinder 9 drives the lower arc section 11 to move through the lower connecting block 10. The third hydraulic cylinder 12 drives the middle arc section 14 to move through the middle connecting block 13. The fourth hydraulic cylinder 16 drives the upper arc section 18 and the lower hinge buckle 19 to rotate around the hinge shaft 20 through the front card seat 17, which facilitates arc - shaped support. When the support arm needs to be disassembled, operate the second hydraulic cylinder 9, the third hydraulic cylinder 12, and the fourth hydraulic cylinder 16 in reverse to facilitate the disconnection of the lower connecting block 10, the middle arc section 14, and the upper arc section 18 from the outside. Operate the first hydraulic cylinder 8 in reverse to lower the support leg 2, the frame 1, and the column plate 27 by a certain height to facilitate the disconnection of the central section 23 and the top arc section 22 from the outside, and then it is convenient to move out under the drive of the electric wheel 5. When long - length support is required, multiple sets of the frame 1 are spliced together. At this time, the connecting plate 24 of one set of the frame 1 is inserted into the connecting groove 26 of another set of the frame 1, and the two sets of the connecting plate 24 and the connecting groove 26 are fixed by a locking pin 25, which facilitates the splicing of multiple sets of road - bridge - tunnel support connection structures for use, facilitates long - length support, and completes the use of the support connection structure.
[0047] The present utility model covers any substitutions, modifications, equivalent methods, and solutions made within the essence and scope of the present utility model. For the public to have a thorough understanding of the present utility model, specific details are described in detail in the following preferred embodiments of the present utility model. However, those skilled in the art can fully understand the present utility model without these detailed descriptions. In addition, to avoid unnecessary confusion to the essence of the present utility model, well - known methods, processes, procedures, components, and circuits are not described in detail.
[0048] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.
Claims
1. A support connection structure for road bridges and tunnels, characterized in that: It includes a frame and support legs. The bottom end of the frame is symmetrically installed with support legs. The bottom ends of the support legs are all slidably installed with telescopic legs. The bottom ends of the telescopic legs are all installed with traveling frames. The bottom ends of the traveling frames are all installed with two groups of electric wheels. The outside of the frame is provided with a central section. Both ends of the central section are installed with top arc sections. The bottom ends of the top arc sections are all installed with column plates, and the column plates are all connected to the frame. On the outside of the frame on one side of the top arc section, upper arc sections are symmetrically arranged. On the outside of the frame on one side of the upper arc section, middle arc sections are symmetrically arranged. On the outside of the frame on one side of the middle arc section, lower arc sections are symmetrically arranged. Lower connecting blocks are all installed on the inner walls of the lower arc sections. Middle connecting blocks are all installed on the inner walls of the middle arc sections.
2. The road bridge and tunnel support connection structure according to claim 1, characterized in that: Lower hinge buckles are all installed at one ends of the upper arc sections close to the top arc sections. Upper hinge buckles are all installed at one ends of the top arc sections close to the upper arc sections.
3. A road bridge and tunnel support connection structure according to claim 2, characterized in that: On one side of the upper hinge buckle close to the lower hinge buckle, hinge shafts are all arranged, and the upper hinge buckle is movably connected to the lower hinge buckle through the hinge shaft.
4. The road bridge and tunnel support connection structure according to claim 1, characterized in that: Fourth hydraulic cylinders are all arranged at the bottom ends of the top arc sections. Rear clamping seats are all installed at one ends of the fourth hydraulic cylinders close to the top arc sections, and the fourth hydraulic cylinders are connected to the top arc sections through the rear clamping seats.
5. The road bridge and tunnel support connection structure according to claim 4, characterized in that: Front clamping seats are all installed at one ends of the fourth hydraulic cylinders close to the upper arc sections, and the fourth hydraulic cylinders are movably connected to the upper arc sections through the front clamping seats.
6. The road bridge and tunnel support connection structure according to claim 1, characterized in that: Third hydraulic cylinders are all movably installed on the outer walls of the frame on one side of the middle connecting blocks, and the third hydraulic cylinders are all movably connected to the middle connecting blocks.
7. The road bridge and tunnel support connection structure according to claim 1, characterized in that: Second hydraulic cylinders are all movably installed on the outer walls of the frame on one side of the lower connecting blocks, and the second hydraulic cylinders are all movably connected to the lower connecting blocks.
8. The road bridge and tunnel support connection structure according to claim 1, characterized in that: Transfer blocks are all installed on the outer walls on both sides of the telescopic legs below the support legs. First hydraulic cylinders are all installed on the outer walls of the support legs above the transfer blocks. Push rods are all installed at the output ends of the first hydraulic cylinders, and the push rods are all connected to the transfer blocks.
9. The road bridge and tunnel support connection structure according to claim 1, characterized in that: A connection groove is arranged inside the frame. A connecting plate is installed on the side wall of the frame on one side of the connection groove.
10. The road bridge and tunnel support connection structure according to claim 9, characterized in that: Locking pins are symmetrically installed at the top end of the frame above the connection groove, and the locking pins all extend into the interior of the connection groove.
Citation Information
Patent Citations
Supporting and connecting structure for roads, bridges and tunnels
CN221589303U