Telescopic highway subgrade protection device
By designing the telescopic support assembly and the fixing assembly, the safety problem caused by the increased spacing between guard rods when the existing device extends vertically is solved, achieving height-adjustable stable protection and improving the protective performance and reliability of the highway subgrade protection device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG ZHONGQIANG CONSTR ENG
- Filing Date
- 2025-09-03
- Publication Date
- 2026-05-19
AI Technical Summary
When existing retractable roadbed protection devices extend vertically, the spacing between the guard rods increases, making it difficult to provide effective protection and reducing safety.
The device employs a telescopic support assembly, a first fixing assembly, and a protective assembly. Its height-adjustable design ensures that the protective device remains stable after deployment, avoiding safety hazards caused by excessive protective spacing or loose components.
It enables flexible adjustment of the protective height according to actual needs, ensuring the protective effect, improving the stability and reliability of the device, avoiding safety hazards caused by loosening, and significantly improving the protective performance.
Smart Images

Figure CN224260042U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of protective device technology, specifically a retractable roadbed protection device. Background Technology
[0002] The roadbed is a strip-shaped structure built according to the route and in accordance with specific technical standards. It forms the foundation of the highway. During highway maintenance, in order to prevent construction workers and passing vehicles from damaging the edges of the roadbed, roadbed protection devices are needed for isolation and protection.
[0003] In highway transportation, to effectively reduce the space occupied by roadbed protection devices, existing roadbed protection devices are designed as structures that can extend and retract in both the vertical and horizontal directions. This design not only meets the space constraints during transportation but also allows for flexible adjustment of the size of the protection device according to specific scenarios in actual use, thereby optimizing space utilization while ensuring the safety of the highway roadbed.
[0004] Although the roadbed protection device adopts a retractable structural design to meet the space constraints during transportation, in actual applications, when the device is extended vertically, the distance between the two guard rods will increase accordingly. This makes it difficult for the protection device to provide effective protection when facing vehicles traveling on the road, thereby weakening its protective function and reducing the safety of the protection device. Therefore, a retractable roadbed protection device is proposed to address the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a retractable roadbed protection device to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A retractable roadbed protection device includes a telescopic support assembly. A first fixing component is installed at the right end of the telescopic support assembly. A protective component is inserted into the rear end of the telescopic support assembly. A fixing hole is installed at the upper end of the telescopic support assembly. The telescopic support assembly includes a protective shell. A cross-shaped slot is provided at both the front and rear ends of the protective shell. A fixing hole and an insertion hole are provided through the inner side of the protective shell. The first fixing component includes a fixing bolt, which is inserted into the through hole. The through hole is located inside the pressure plate. An insertion rod is fixedly connected to the left side of the pressure plate. The protective component includes a first protective rod. A receiving groove is provided near the outside of the first protective rod. The outer side of the receiving groove is fixedly connected to the end of the protective cloth. Insert blocks are fixedly connected to both the front and rear ends of the first protective rod. A fixing insertion port is provided inside the insert block. A second protective rod is fixedly connected to the upper end of the protective cloth.
[0008] As a further optimization of this utility model, the bottom end of the protective shell is fixedly connected to a fixed base, the inner side of the protective shell is provided with a sliding groove and a reserved hole, a movable rod is inserted into the sliding groove, and a top seat is fixedly connected to the top of the movable rod.
[0009] As a further optimization of this utility model, a pre-drilled hole is provided on the inner side of the movable rod, and the protective shell and the movable rod are fixed together by bolts.
[0010] As a further optimization of this utility model, the top seat has cross-shaped slots at its front and rear ends, a fixing hole and an insertion hole are formed through the inner side of the top seat, a second protective rod is inserted into the cross-shaped slot of the top seat, and the top seat is fixed to the second fixing component by bolts.
[0011] As a further optimization of this utility model, the insertion rod is inserted into the socket, the fixed socket is aligned with the socket on the left and right, and the insertion rod is inserted into the fixed socket.
[0012] As a further optimization of this utility model, the fixing hole and the through hole are aligned left and right, the left end of the pressure plate is in close contact with the right end of the protective shell, the fixing bolt is inserted into the fixing hole, and the protective shell and the pressure plate are fixed together by the fixing bolt.
[0013] As a further optimization of this utility model, the lower end of the protective cloth is wound around the outside of the receiving groove, and the front and rear ends of the second protective rod are both fixed with inserts.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] In this utility model, through the provision of a telescopic bracket assembly, a first fixing assembly, and a protective assembly, the device, with its height adjustable design, can flexibly adjust the protective height according to actual protective needs, ensuring the protective effect. At the same time, the device can maintain a stable protective state after being deployed, avoiding safety hazards caused by excessive protective spacing or loose parts, and significantly improving protective performance and reliability. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is an exploded structural diagram of the entire utility model;
[0018] Figure 3 This is a cross-sectional structural diagram of the telescopic support assembly of this utility model;
[0019] Figure 4 This utility model Figure 3 A schematic diagram of the structure at point A;
[0020] Figure 5 This is a schematic diagram of the protective component structure of this utility model;
[0021] Figure 6 This utility model Figure 5 A schematic diagram of the structure at point B.
[0022] In the diagram: 1. Telescopic bracket assembly; 11. Protective shell; 12. Fixed base; 13. Cross slot; 14. Fixing hole; 15. Sliding groove; 16. Reserved hole; 17. Insertion hole; 18. Movable rod; 19. Top seat;
[0023] 2. First fixing component; 21. Fixing bolt; 22. Pressure plate; 23. Through hole; 24. Insert rod;
[0024] 3. Protective components; 31. First protective bar; 32. Protective cloth; 33. Insert block; 34. Receiving groove; 35. Fixing socket; 36. Second protective bar;
[0025] 4. Second fixing component. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0028] Please see Figures 1-6 This utility model provides a technical solution:
[0029] A retractable roadbed protection device includes a telescopic support assembly 1. A first fixing component 2 is installed at the right end of the telescopic support assembly 1. A protective component 3 is inserted into the rear end of the telescopic support assembly 1. A fixing hole 14 is installed at the upper end of the telescopic support assembly 1. The telescopic support assembly 1 includes a protective shell 11. A cross slot 13 is opened at both the front and rear ends of the protective shell 11. A fixing hole 14 and an insertion hole 17 are opened through the inner side of the protective shell 11. The first fixing component 2 includes a fixing bolt 21, which is inserted into the inside of a through hole 23. The through hole 23 is opened on the inner side of a pressure plate 22. An insertion rod 24 is fixedly connected to the left side of the pressure plate 22. The protective component 3 includes a first protective rod 31. A receiving groove 34 is opened near the outside of the first protective rod 31. The outer side of the receiving groove 34 is fixedly connected to the end of a protective cloth 32. Insert blocks 33 are fixedly connected to both the front and rear ends of the first protective rod 31. A fixing insertion port 35 is opened on the inner side of the insert blocks 33. A second protective rod 36 is fixedly connected to the upper end of the protective cloth 32.
[0030] As a further implementation of this solution, a fixed base 12 is fixedly connected to the bottom of the protective shell 11. A sliding groove 15 and a reserved hole 16 are provided on the inner side of the protective shell 11. A movable rod 18 is inserted into the sliding groove 15. A top seat 19 is fixedly connected to the top of the movable rod 18. A reserved hole 16 is provided on the inner side of the movable rod 18. The protective shell 11 and the movable rod 18 are fixed together by bolts. With the above settings, the device can adjust its height by sliding the movable rod 18 inside the sliding groove 15, thereby flexibly adjusting the protection height according to the actual protection requirements and ensuring the protection effect.
[0031] As a further implementation of this solution, cross slots 13 are provided at the front and rear ends of the top seat 19, and fixing holes 14 and insertion holes 17 are provided through the inner side of the top seat 19. The second protective rod 36 is inserted into the cross slots 13 provided in the top seat 19. The top seat 19 is fixed to the second fixing component 4 by bolts. Through the above settings, the second protective rod 36 can be firmly installed on the top seat 19 and fixed to the second fixing component 4 by bolts, which further enhances the stability and protective performance of the device and ensures the reliability of the protective components during use.
[0032] As a further implementation of this solution, the insertion rod 24 is inserted into the insertion hole 17, the fixing socket 35 is aligned with the insertion hole 17, the insertion rod 24 is inserted into the fixing socket 35, the fixing hole 14 is aligned with the through hole 23, the left end of the pressure plate 22 is tightly attached to the right end of the protective shell 11, the fixing bolt 21 is inserted into the fixing hole 14, and the protective shell 11 and the pressure plate 22 are fixed together by the fixing bolt 21. Through the above settings, the stability of the device during assembly and use is ensured, and the protective performance is avoided due to loosening or falling off of parts.
[0033] As a further implementation of this solution, the lower end of the protective cloth 32 is rolled around the outside of the receiving groove 34, and the front and rear ends of the second protective rod 36 are fixed with inserts 33. Through the above settings, the protective cloth 32 can maintain a stable protective state after being unfolded, avoiding safety hazards caused by excessive protective spacing or loose parts, and significantly improving protective performance and reliability.
[0034] Workflow: During device assembly, firstly, the height of the telescopic support assembly 1 is adjusted. The movable rod 18 is pre-inserted into the sliding groove 15. By pulling the movable rod 18 upward, it slides within the sliding groove 15 until the distance between the protective shell 11 and the movable rod 18 reaches the required distance. Bolts are inserted into the pre-drilled holes 16 on both the protective shell 11 and the movable rod 18, securing them together. The first protective rod 31 is rotated to release the protective cloth 32 from the receiving groove 34 until the distance between the second protective rod 36 and the first protective rod 31 reaches the required distance. Then, the insert block 33 securing the first protective rod 31 is inserted into the cross slot 13, and the insert rod 24 is inserted into the insertion hole 17 and fixed. Inside the socket 35, the pressure plate 22 is fixed to the protective shell 11 by fixing bolts 21. Then, the second protective rod 36 is installed to the top seat 19 in the same way. The second protective rod 36 and the top seat 19 are fixed by the second fixing component 4. Then, another telescopic bracket component 1 is installed at the rear end of the protective component 3 to complete the installation. Based on the above principles, the protective component 3 designed by the device can be adjusted according to the required protection height. When the protective component 3 is unfolded, the first protective rod 31 and the second protective rod 36 are set with a protective cloth 32. This protection mechanism can significantly reduce safety accidents caused by large protection gaps and improve the protection performance of the device. At the same time, the unfolded protective cloth 32 will not shrink or release, thus increasing the strength of the protection.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A retractable roadbed protection device, comprising a telescopic support assembly (1), characterized in that: The telescopic support assembly (1) has a first fixing component (2) installed on the right end, and a protective component (3) is inserted into the rear end of the telescopic support assembly (1). The telescopic bracket assembly (1) has a fixing hole (14) installed at the upper end. The telescopic bracket assembly (1) includes a protective shell (11). The front and rear ends of the protective shell (11) are provided with cross slots (13). The inner side of the protective shell (11) is provided with a fixing hole (14) and a plug hole (17). The first fixing component (2) includes a fixing bolt (21), which is inserted into the inside of a through hole (23). The through hole (23) is opened on the inside of a pressure plate (22), and a plug rod (24) is fixedly connected to the left side of the pressure plate (22). The protective component (3) includes a first protective rod (31), a receiving groove (34) is provided near the outside of the first protective rod (31), the outer side of the receiving groove (34) is fixedly connected to the end of the protective cloth (32), the front end and the rear end of the first protective rod (31) are fixedly connected to the insert (33), the inner side of the insert (33) is provided with a fixed insertion port (35), and the upper end of the protective cloth (32) is fixedly connected to a second protective rod (36).
2. The retractable roadbed protection device according to claim 1, characterized in that: The protective shell (11) is fixedly connected to a fixed base (12) at the bottom. The protective shell (11) has a sliding groove (15) and a reserved hole (16) on the inner side. A movable rod (18) is inserted into the sliding groove (15). A top seat (19) is fixedly connected to the top of the movable rod (18).
3. The retractable highway subgrade protection device according to claim 2, characterized in that: A pre-drilled hole (16) is provided on the inner side of the movable rod (18), and the protective shell (11) and the movable rod (18) are fixed together by bolts.
4. A retractable highway subgrade protection device according to claim 2, characterized in that: The top seat (19) has cross slots (13) at its front and rear ends. The top seat (19) has a fixing hole (14) and an insertion hole (17) through it. The second protective rod (36) is inserted into the cross slot (13) of the top seat (19). The top seat (19) is fixed to the second fixing component (4) by bolts.
5. A retractable highway subgrade protection device according to claim 1, characterized in that: The insertion rod (24) is inserted into the socket (17), the fixed socket (35) is aligned with the socket (17) left and right, and the insertion rod (24) is inserted into the fixed socket (35).
6. A retractable highway subgrade protection device according to claim 1, characterized in that: The fixing hole (14) and the through hole (23) are aligned left and right. The left end of the pressure plate (22) is close to the right end of the protective shell (11). The fixing bolt (21) is inserted into the fixing hole (14). The protective shell (11) and the pressure plate (22) are fixed together by the fixing bolt (21).
7. A retractable highway subgrade protection device according to claim 1, characterized in that: The lower end of the protective cloth (32) is wrapped around the outside of the receiving groove (34), and the front and rear ends of the second protective rod (36) are fixed with inserts (33).