New and old beam plate connecting device for reconstruction and extension of expressway
By combining components such as guide frames and extension frames, the problems of uneven height and short service life of the connection devices for new and old beams and slabs are solved, achieving flush fixing and buffering of beams and slabs, and improving the durability of the device.
Patent Information
- Application Number
- CN202520328396.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-27
AI Technical Summary
The existing highway reconstruction and expansion projects have inconsistent heights in the connection devices between new and old beams and slabs, which can easily damage passing vehicles and lack a buffer structure, resulting in a short service life.
The design employs a combination of guide frame, heightening frame, support structure, auxiliary structure, buffer structure, and fixing structure, including components such as support threaded rod, damping buffer, load-bearing buffer plate, and load-bearing spring. The beam plate is flush-fixed by rotating the support threaded sleeve and the limit nut, and the damping buffer and spring provide a buffering effect.
The new and old beams were fixed at the same height, reducing damage to the vehicle, extending the service life of the device, and improving the durability of the device through the buffer structure.
Smart Images
Figure CN223893210U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of highway reconstruction and expansion technology, and in particular to a connection device for new and old beams and slabs in highway reconstruction and expansion. Background Technology
[0002] In recent years, urban traffic volume in my country has been increasing year by year, which has led to a continuous increase in the load on bridges. The original highway carrying capacity can no longer meet the current transportation needs, so reconstruction and expansion have become a major focus of bridge construction. Therefore, corresponding connecting devices are needed to connect the old and new beams.
[0003] The existing connection devices between the old and new beams in highway reconstruction and expansion projects are of uneven height, causing significant damage to passing vehicles. Furthermore, the existing connection devices lack a buffer structure, making them prone to damage and resulting in a short service life. Utility Model Content
[0004] The technical problem this utility model aims to solve is that the existing connection devices for new and old beams in highway reconstruction and expansion are of uneven height, causing significant damage to passing vehicles. Furthermore, the existing connection devices for new and old beams in highway reconstruction and expansion lack a buffer structure, making them prone to damage and resulting in a short service life.
[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is a connection device for new and old beams and slabs in highway reconstruction and expansion, including a guide frame and a heightening frame. The heightening frame is installed on the upper wall of the guide frame. The guide frame has four guide holes. A support structure is installed on the upper wall of the heightening frame. An auxiliary structure is installed on the outer wall of the guide frame. A buffer structure is installed on the upper wall of the auxiliary structure. A fixing structure is installed on the auxiliary structure. The support structure includes: a main load-bearing plate, four support threaded rods, and four support threaded sleeves. The main load-bearing plate is installed on the upper wall of the heightening frame. The four support threaded rods are respectively installed on the upper wall of the main load-bearing plate. The four support threaded sleeves are respectively fitted onto the outer wall of the four support threaded rods.
[0006] As a further embodiment of this utility model: the auxiliary structure includes: two auxiliary fixing sleeves, four limiting threaded holes, four supporting threaded holes, and two auxiliary load-bearing plates; the two auxiliary fixing sleeves are respectively fitted onto the two sides of the guide frame, the four limiting threaded holes are respectively opened on the upper wall surface of the two auxiliary fixing sleeves, the four supporting threaded holes are respectively opened on the upper wall surface of the two auxiliary fixing sleeves, and the two auxiliary load-bearing plates are respectively installed on the two sides of the two auxiliary fixing sleeves.
[0007] As a further embodiment of this utility model: the buffer structure includes: four damping buffers, two load-bearing buffer plates and four buffer springs; the four damping buffers are respectively installed on the upper wall of the two auxiliary load-bearing plates, the two load-bearing buffer plates are respectively installed on the upper wall of the four damping buffers, and the four buffer springs are respectively fitted on the outer wall of the four damping buffers.
[0008] As a further embodiment of this utility model: the fixing structure includes: four fixed guide rods, four threaded limiting sleeves, four threaded support sleeves, and two beam plate bodies; the lower ends of the four fixed guide rods are respectively threaded and connected to the four supporting threaded holes; the four threaded limiting sleeves are respectively fitted onto the outer wall surface of the four fixed guide rods; the four threaded support sleeves are respectively fitted onto the outer wall surface of the four threaded limiting sleeves; and the two beam plate bodies are respectively fitted onto the outer wall surface of the four threaded support sleeves.
[0009] As a further embodiment of this utility model, the guide frame is provided with assembly chamfers around its perimeter.
[0010] As a further embodiment of this utility model: the four limiting threaded holes are respectively aligned with the four guide holes and are respectively connected by limiting nuts.
[0011] As a further embodiment of this utility model: load-bearing springs are respectively fitted on the outer wall surfaces of the four fixed guide rods.
[0012] As a further embodiment of this utility model: the height-increasing frame adopts a telescopic block, which can extend and retract vertically, and the elastic force is greater than the weight of the two beam plates.
[0013] The present invention adopts the above technical solution and has the following advantages compared with the prior art:
[0014] Since the two beam slabs are new and old, their models and weights may differ, resulting in different support heights when placed on the load-bearing springs. The operator rotates four support threaded sleeves around the four support threaded rods in the gap between the two beam slabs and the extension frame, pressing the four support threaded sleeves against the upper wall inside the two beam slabs. The four threaded support sleeves are then used until the upper surfaces of the two beam slabs are flush. This solves the problem of uneven heights in the existing highway reconstruction and expansion beam slab connection devices, which causes significant damage to passing vehicles.
[0015] As the two beam bodies move downwards, they also drive the two load-bearing buffer plates downwards. The two load-bearing buffer plates then drive the four damping buffers to retract. During this process, the four threaded support sleeves drive the four threaded limit sleeves to move along the four fixed guide rods, and the four load-bearing springs retract. When the vehicle leaves, the four load-bearing springs and the riser frame reset, driving the two beam bodies to reset. This solves the problem that the existing connection devices for new and old beams in highway reconstruction and expansion lack a buffer structure, are prone to damage, and have a short service life. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of a connection device for new and old beams in the reconstruction and expansion of a highway, as described in this utility model embodiment.
[0017] Figure 2 This is a schematic diagram of the support structure of a connection device for new and old beams in the reconstruction and expansion of a highway, as described in this utility model embodiment.
[0018] Figure 3 This is a schematic diagram of the auxiliary structure of a connection device for new and old beams and slabs in the reconstruction and expansion of a highway, according to an embodiment of this utility model.
[0019] Figure 4 This is a schematic diagram of the fixing structure of a connection device for connecting old and new beams in the reconstruction and expansion of a highway, according to an embodiment of this utility model.
[0020] In the diagram: 1. Guide frame; 2. Elevator frame; 3. Guide hole; 4. Main load-bearing plate; 5. Support threaded rod; 6. Support threaded sleeve; 7. Auxiliary fixing sleeve; 8. Limiting threaded hole; 9. Support threaded hole; 10. Auxiliary load-bearing plate; 11. Damping buffer; 12. Load-bearing buffer plate; 13. Buffer spring; 14. Fixed guide rod; 15. Threaded limiting sleeve; 16. Threaded support sleeve; 17. Beam plate body; 18. Limiting nut; 19. Load-bearing spring. Detailed Implementation
[0021] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0022] Please see Figures 1-4A connection device for new and old beams and slabs in highway reconstruction and expansion includes a guide frame 1 and an extension frame 2. The extension frame 2 is installed on the upper wall of the guide frame 1. The guide frame 1 has four guide holes 3. A support structure is installed on the upper wall of the extension frame 2. An auxiliary structure is installed on the outer wall of the guide frame 1. A buffer structure is installed on the upper wall of the auxiliary structure. A fixing structure is installed on the auxiliary structure. The support structure includes: a main load-bearing plate 4, four support threaded rods 5, and four support threaded sleeves 6. The main load-bearing plate 4 is installed on the upper wall of the extension frame 2. The four support threaded rods 5 are respectively installed on the upper wall of the main load-bearing plate 4. The four support threaded sleeves 6 are respectively fitted onto the outer wall of the four support threaded rods 5.
[0023] Please see Figure 3 The auxiliary structure includes: two auxiliary fixing sleeves 7, four limiting threaded holes 8, four supporting threaded holes 9, and two auxiliary load-bearing plates 10; the two auxiliary fixing sleeves 7 are respectively fitted on the two sides of the guide frame 1, the four limiting threaded holes 8 are respectively opened on the upper wall of the two auxiliary fixing sleeves 7, the four supporting threaded holes 9 are respectively opened on the upper wall of the two auxiliary fixing sleeves 7, and the two auxiliary load-bearing plates 10 are respectively installed on the two sides of the two auxiliary fixing sleeves 7.
[0024] Please see Figure 3 The buffer structure includes: four damping buffers 11, two load-bearing buffer plates 12, and four buffer springs 13; the four damping buffers 11 are respectively installed on the upper wall of the two auxiliary load-bearing plates 10, the two load-bearing buffer plates 12 are respectively installed on the upper wall of the four damping buffers 11, and the four buffer springs 13 are respectively fitted on the outer wall of the four damping buffers 11.
[0025] Please see Figure 4 The fixed structure includes: four fixed guide rods 14, four threaded limiting sleeves 15, four threaded support sleeves 16, and two beam bodies 17; the lower ends of the four fixed guide rods 14 are respectively threaded and connected to four support threaded holes 9; the four threaded limiting sleeves 15 are respectively fitted onto the outer wall surface of the four fixed guide rods 14; the four threaded support sleeves 16 are respectively fitted onto the outer wall surface of the four threaded limiting sleeves 15; and the two beam bodies 17 are respectively fitted onto the outer wall surface of the four threaded support sleeves 16.
[0026] Please see Figure 2 The guide frame 1 has chamfers around its perimeter, which facilitates the assembly of the two auxiliary fixing sleeves 7 with the guide frame 1 during use.
[0027] Please see Figure 3 The four limiting threaded holes 8 are respectively aligned with the four guide holes 3 and are respectively connected by limiting nuts 18. In use, the four guide holes 3 and the four support threaded holes 9 are screwed in by the four limiting nuts 18 to fix the two auxiliary fixing sleeves 7 onto the guide frame 1.
[0028] Please see Figure 4 Each of the four fixed guide rods 14 has a load-bearing spring 19 mounted on its outer wall. When in use, the four threaded support sleeves 16 drive the four threaded limit sleeves 15 to move along the four fixed guide rods 14 respectively, and the four load-bearing springs 19 retract.
[0029] Please see Figure 2 The riser 2 uses telescopic blocks that can extend and retract vertically, and the elastic force is greater than the weight of the two beam bodies 17. When in use, the operator rotates the four support threaded sleeves 6 around the four support threaded rods 5 in the gap between the two beam bodies 17 and the riser 2, and pushes the four support threaded sleeves 6 against the upper wall inside the two beam bodies 17, and works with the four threaded support sleeves 16 until the upper surfaces of the two beam bodies 17 are flush.
[0030] In Example 1, since the two beam bodies 17 are new and old beams, their models may be different, their weights may be different, and their support heights may be different when placed on the load-bearing springs 19. The operator rotates the four support threaded sleeves 6 around the four support threaded rods 5 in the gap between the two beam bodies 17 and the riser 2, so that the four support threaded sleeves 6 are pressed against the upper wall inside the two beam bodies 17, and the four threaded support sleeves 16 are used until the upper surfaces of the two beam bodies 17 are flush.
[0031] Specifically, during installation, the operator unscrews the four threaded limiting sleeves 15 around the four threaded support sleeves 16, then places the two beam plate bodies 17 onto the four threaded support sleeves 16. Finally, the four threaded limiting sleeves 15 are screwed in along the four threaded support sleeves 16 to fix the two beam plate bodies 17. Then, the two beam plate bodies 17 are moved to move the two auxiliary fixing sleeves 7 toward the guide frame 1, inserting the two beam plate bodies 17 into the main load-bearing plate 4. At the same time, the two auxiliary fixing sleeves 7 are inserted into the guide frame 1, bringing the two beam plate bodies 17 into contact with the extension frame 2. Then, the operator rotates the four support threaded sleeves 6 around the four support threaded rods 5 in the gap between the two beam plate bodies 17 and the extension frame 2, pressing the four support threaded sleeves 6 against the upper wall inside the two beam plate bodies 17 until the upper surfaces of the two beam plate bodies 17 are flush. Finally, the four limiting nuts 18 are screwed in to fix the four guide holes 3 and the four support threaded holes 9, securing the two auxiliary fixing sleeves 7 onto the guide frame 1.
[0032] In Example 2, as the two beam bodies 17 move downward, they also drive the two load-bearing buffer plates 12 to move downward. The two load-bearing buffer plates 12 respectively drive the four damping buffers 11 to retract. During this period, the four threaded support sleeves 16 drive the four threaded limit sleeves 15 to move along the four fixed guide rods 14 respectively. The four load-bearing springs 19 retract. When the vehicle leaves, the four load-bearing springs 19 and the riser 2 reset, driving the two beam bodies 17 to reset.
[0033] Specifically, when the vehicle passes over the two beam bodies 17, the two beam bodies 17 move downwards synchronously through four support threaded sleeves 6. The four support threaded sleeves 6 drive the main load-bearing plate 4 downwards through four support threaded rods 5, causing the riser frame 2 to retract. At the same time as the two beam bodies 17 move downwards, they also drive the two load-bearing buffer plates 12 downwards. The two load-bearing buffer plates 12 respectively drive the four damping buffers 11 to retract. During this period, the four threaded support sleeves 16 drive the four threaded limit sleeves 15 to move along the four fixed guide rods 14 respectively, and the four load-bearing springs 19 retract. When the vehicle leaves, the four load-bearing springs 19 and the riser frame 2 reset, driving the two beam bodies 17 to reset. The reset is made smoother by the four damping buffers 11.
[0034] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.
Claims
1. A connection device for new and old beams and slabs in the reconstruction and expansion of a highway, comprising a guide frame (1) and a heightening frame (2), characterized in that, The height-increasing frame (2) is installed on the upper wall of the guide frame (1). The guide frame (1) has four guide holes (3). The upper wall of the height-increasing frame (2) is equipped with a support structure. The outer wall of the guide frame (1) is equipped with an auxiliary structure. The upper wall of the auxiliary structure is equipped with a buffer structure. The auxiliary structure is equipped with a fixing structure. The support structure includes: a main load-bearing plate (4), four support threaded rods (5) and four support threaded sleeves (6); The main load-bearing plate (4) is installed on the upper wall of the riser (2), and the four supporting threaded rods (5) are respectively installed on the upper wall of the main load-bearing plate (4). The four supporting threaded sleeves (6) are respectively fitted on the outer wall of the four supporting threaded rods (5).
2. The connection device for new and old beams and slabs in highway reconstruction and expansion according to claim 1, characterized in that, The auxiliary structure includes: two auxiliary fixing sleeves (7), four limiting threaded holes (8), four supporting threaded holes (9), and two auxiliary load-bearing plates (10); The two auxiliary fixing sleeves (7) are respectively fitted on the two sides of the guide frame (1), the four limiting threaded holes (8) are respectively opened on the upper wall of the two auxiliary fixing sleeves (7), the four supporting threaded holes (9) are respectively opened on the upper wall of the two auxiliary fixing sleeves (7), and the two auxiliary load-bearing plates (10) are respectively installed on the two sides of the two auxiliary fixing sleeves (7).
3. The connection device for new and old beams and slabs in highway reconstruction and expansion according to claim 2, characterized in that, The buffer structure includes: four damping buffers (11), two load-bearing buffer plates (12), and four buffer springs (13); The four damping buffers (11) are respectively installed on the upper wall of the two auxiliary load-bearing plates (10), the two load-bearing buffer plates (12) are respectively installed on the upper wall of the four damping buffers (11), and the four buffer springs (13) are respectively fitted on the outer wall of the four damping buffers (11).
4. The connection device for new and old beams and slabs in highway reconstruction and expansion according to claim 2, characterized in that, The fixing structure includes: four fixed guide rods (14), four threaded limiting sleeves (15), four threaded support sleeves (16), and two beam plate bodies (17); The lower ends of the four fixed guide rods (14) are respectively threaded and connected to the four support threaded holes (9). The four threaded limiting sleeves (15) are respectively fitted on the outer wall of the four fixed guide rods (14). The four threaded support sleeves (16) are respectively fitted on the outer wall of the four threaded limiting sleeves (15). The two beam plate bodies (17) are respectively fitted on the outer wall of the four threaded support sleeves (16).
5. The connection device for new and old beams and slabs in highway reconstruction and expansion according to claim 1, characterized in that, The guide frame (1) has chamfered edges around its perimeter.
6. A connection device for new and old beams and slabs in highway reconstruction and expansion according to claim 2, characterized in that, The four limiting threaded holes (8) are respectively aligned with the four guide holes (3) and are respectively connected by limiting nuts (18).
7. A connection device for new and old beams and slabs in highway reconstruction and expansion according to claim 4, characterized in that, The outer walls of the four fixed guide rods (14) are respectively fitted with load-bearing springs (19).
8. A connection device for new and old beams and slabs in highway reconstruction and expansion according to claim 1, characterized in that, The height-increasing frame (2) uses telescopic blocks that can extend and retract vertically, and the elastic force is greater than the weight of the two beam plates (17).