Pre-pressing type damping comb plate telescopic device
By setting flexible shock absorbing devices and stable anchoring components at the bridge expansion joints, the problems of poor shock absorption and loose anchoring of existing bridge expansion devices are solved, better shock absorption and longer service life are achieved, and the Noise when the vehicle passes.
Patent Information
- Application Number
- CN202421052195.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The existing bridge expansion device has poor shock absorption effect and the anchoring mechanism is prone to loosening, which affects the smooth passage of the vehicle.
A pre-pressure shock absorbing comb tooth plate telescopic device is designed, and the flexible shock absorbing device is provided at the junction of the transslit comb tooth plate and the fixed comb tooth plate, and the combined connection structure of the anchor assembly is used to ensure the comb tooth plate's Stable support and seal, flexible shock absorbing devices are installed with L-shaped grooves, including rubber support and flexible support, combined with waterproofing devices and drainage systems.
It improves shock absorption effect, extends the service life of the comb plate, reduces the noise when the vehicle passes, ensures smooth driving and comfortable, and the noise is 3 to 6 decibels lower than traditional steel joints.
Smart Images
Figure CN222294693U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bridge construction, and in particular relates to a pre-pressed shock-absorbing comb plate telescopic device. Background Art
[0002] A bridge expansion joint is a structural joint set on the bridge to prevent the bridge from cracking or being damaged due to climate temperature changes (thermal expansion and contraction), so that the bridge can be horizontally expanded and contracted along the length direction. The bridge expansion device is used to connect the structural joint. The existing bridge expansion device generally sets two comb plates between two adjacent beams. The comb teeth of the two comb plates are cross-set above one of the beams. The comb teeth are in direct contact with the beam, and the shock absorption effect is poor. Moreover, after long-term use, the anchoring mechanism used to connect the beam and the comb plate is easy to loosen, which will affect the smooth passage of vehicles. Utility Model Content
[0003] The utility model aims to provide a pre-compression type shock absorbing comb plate telescopic device with good shock absorbing effect.
[0004] The utility model is achieved in this way:
[0005] The utility model provides a pre-stressed shock-absorbing comb tooth plate telescopic device, comprising a cross-slot comb tooth plate and a fixed comb tooth plate, wherein the cross-slot comb tooth plate is supported by a first anchor assembly, and the fixed comb tooth plate is supported by a second anchor assembly, and a bridge expansion joint is located below the cross-slot comb tooth plate, and a waterproof device for sealing the cooperation between the first anchor assembly and the second anchor assembly is installed at the bridge expansion joint, and is characterized in that a flexible shock-absorbing device is provided at the junction of the cross-slot comb tooth plate and the fixed comb tooth plate, and the flexible shock-absorbing device is installed on the second anchor assembly.
[0006] According to the above technical solution, the second anchor assembly includes a second anchor plate, a support plate, a second connecting steel bar, a second embedded steel bar and a second longitudinal steel bar. A support plate is connected to the second anchor plate on one side of the waterproof device, a second connecting steel bar is fixed on the second anchor plate, the second connecting steel bar is connected to the second embedded steel bar, the second longitudinal steel bar crosses the second connecting steel bar and the second embedded steel bar, and a groove for installing a flexible shock absorbing device is provided between the support plate and the second anchor plate.
[0007] According to the above technical solution, the longitudinal section of the groove is L-shaped, and the flexible shock absorbing device includes a rubber bearing and a flexible support.
[0008] According to the above technical solution, the first anchoring assembly includes a first anchoring plate, a support plate, a first connecting steel bar, a first embedded steel bar and a first longitudinal steel bar. A support plate is connected to the first anchoring plate on one side of the waterproofing device, and a first connecting steel bar is fixed on the first anchoring plate. The first connecting steel bar is connected to the first embedded steel bar, and the first longitudinal steel bar crosses the first connecting steel bar and the first embedded steel bar.
[0009] According to the above technical solution, the waterproof device forms a water flow channel with a U-shaped cross section in the expansion joint.
[0010] According to the above technical solution, the waterproof device includes anchors welded to the first anchor assembly and the second anchor assembly respectively, and a U-shaped waterproof rubber strip is installed on the anchor, and the two sides of the waterproof rubber strip are fixed by fixing parts.
[0011] According to the above technical solution, a nose is provided at both ends of the expansion joint of the bridge, and a drainage pipe is provided at a low position between the nose and the waterproof rubber strip, through which the accumulated water in the waterproof device is introduced into the overall drainage system of the bridge.
[0012] According to the above technical solution, the cross-slot comb plate and the fixed comb plate are on the same horizontal plane, the teeth are arranged in a staggered manner, and a telescopic area is formed between the two teeth.
[0013] According to the above technical solution, the surfaces of the cross-slot comb plate and the fixed comb plate are both provided with anti-slip grooves.
[0014] The beneficial effects of the utility model are:
[0015] 1. The utility model arranges a flexible shock absorbing device in the intersection area of the comb teeth of two comb plates. The flexible shock absorbing device is always in a compressed state, which can play a good shock absorbing role and improve driving comfort.
[0016] 2. Through the design of the anchoring assembly of the utility model, the anchoring plate, the support plate, and the combination of connecting steel bars and embedded steel bars are connected, so that the comb plate support structure is more stable, firm and reliable, which can extend the reliable use time of the comb plate and enable vehicles to pass smoothly for a longer time.
[0017] 3. Displacement is achieved through the staggered comb tooth structure. Anti-skid grooves are provided on the surface of the cross-seam comb tooth plate and the fixed comb tooth plate, and anti-skid paint is applied. As well as the flexible shock-absorbing device, when the vehicle passes, the impact force is small, the driving is smooth, and less noise is generated. Compared with the traditional steel seam, the noise generated is 3 to 6 decibels lower. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 A schematic structural diagram of a pre-stressed shock-absorbing comb plate telescopic device provided in an embodiment of the utility model.
[0020] Figure 2 A schematic diagram of the anchoring structure of a pre-stressed shock-absorbing comb plate telescopic device provided in an embodiment of the utility model.
[0021] Figure 3 A schematic diagram of the left and right side tooth arrangement provided in an embodiment of the utility model.
[0022] Figure 4 This is a schematic diagram of the structure of a waterproof device provided in an embodiment of the utility model.
[0023] Figure 5 A schematic diagram of a tilting head and a drainage assembly provided in an embodiment of the utility model. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0027] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0028] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0031] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.
[0032] like Figure 1 , 2As shown, this embodiment provides a pre-stressed shock-absorbing comb plate telescopic device, including a cross-slot comb plate 2 and a fixed comb plate 4, wherein the cross-slot comb plate 2 is supported by a first anchor assembly 1, and the fixed comb plate 4 is supported by a second anchor assembly 6. Below the cross-slot comb plate 2 is a bridge expansion joint, and a waterproof device 3 for sealing the cooperation between the first anchor assembly 1 and the second anchor assembly 6 is installed at the bridge expansion joint. A flexible shock-absorbing device 5 is provided at the junction of the cross-slot comb plate and the fixed comb plate, and the flexible shock-absorbing device 5 is installed on the second anchor assembly. In this embodiment, a flexible shock-absorbing device is provided in the cross-slot comb plate intersection area of the comb teeth of the two comb plates, and the flexible shock-absorbing device is always in a compressed state, which can play a good shock-absorbing role and improve driving comfort.
[0033] In this embodiment, the first anchor assembly includes a first anchor plate 103, a first support plate 102, a first connecting steel bar 101, a first embedded steel bar 105 and a first longitudinal steel bar 104. The support plate 102 is welded on one side of the waterproof device on the first anchor plate 103, and the two form a T-shaped structure, which has the characteristics of good fatigue resistance, not easy to damage, and long service life. The first connecting steel bar 101 is welded on the first anchor plate 103, and the first connecting steel bar 101 is connected to the first embedded steel bar 105. The first longitudinal steel bar 104 crosses the first connecting steel bar and the first embedded steel bar. The first anchor assembly constitutes the support structure of the cross-seam comb plate 2. The telescopic device is anchored reliably by reinforcing and welding between the longitudinal and transverse steel bars and the anchor bars, and finally cast together with the beam body 7 with C50 steel fiber concrete. Through the design of the above-mentioned anchor assembly, the anchor plate, the support plate, the connecting steel bar and the embedded steel bar are combined and connected, so that the comb plate support structure is more stable, firm and reliable, which can extend the reliable use time of the comb plate, so that the vehicle can pass smoothly for a longer time.
[0034] The second anchoring assembly includes a second anchoring plate 603, a second support plate 602, a second connecting steel bar 601, a second embedded steel bar 605 and a second longitudinal steel bar 604. A support plate 602 is connected to the second anchoring plate 603 on one side of the waterproof device. A second connecting steel bar 601 is fixed on the second anchoring plate 603. The second connecting steel bar 601 is connected to the second embedded steel bar 605. The second longitudinal steel bar 604 crosses the second connecting steel bar and the second embedded steel bar. The second anchoring assembly constitutes a supporting structure for fixing the comb plate 4. The telescopic device is reliably anchored by reinforcing and welding the longitudinal and transverse steel bars and the anchor bars. Finally, C50 steel fiber concrete is cast together with the beam body 7. A groove for installing a flexible shock-absorbing device is provided between the support plate and the second anchor plate, wherein the longitudinal section of the groove is L-shaped, and the flexible shock-absorbing device includes a rubber support 501 and a flexible support 502, wherein the flexible support 502 is made of polyurethane material. This structure can play a good role in vibration reduction and buffering, and when the bridge turns a corner, the telescopic device can provide sufficient rotation space and ensure driving comfort.
[0035] like Figure 3 As shown, the teeth of the toothed plates on both sides are arranged in a staggered manner, and a telescopic interval is formed between the two teeth, and it is ensured that when the beam body is shortened to the maximum displacement of the telescopic device, the teeth on both sides are not completely separated, and the two tooth shapes can be changed into various shapes, and only need to be arranged in a staggered manner. The displacement is achieved by staggered arrangement of comb teeth structure, and the surfaces of the cross-slot comb tooth plate 2 and the fixed comb tooth plate 4 are provided with anti-skid grooves, coated with anti-skid paint, and flexible shock absorbing devices. When a vehicle passes, the impact force is small, the driving is stable, and the noise is less. Compared with the traditional steel joint, the noise is 3 to 6 decibels lower.
[0036] In this embodiment, Figure 4 As shown, the waterproof device 3 forms a water flow channel with a U-shaped cross section in the expansion joint. Specifically, the waterproof device 3 includes a waterproof rubber strip 302 with a U-shaped cross section, and both sides of the waterproof rubber strip 302 are arranged on the anchoring piece, which is fixed by a fixing piece. Among them, the anchoring piece 301 is an anchoring angle steel, and the fixing piece is a self-tapping screw 303, which is fixed to the anchoring angle steel through a pressure strip 304. The pressure strip 304 and the waterproof rubber strip are pressed tightly on the anchoring angle steel by the self-tapping screw 303. After the concrete of the beam body is poured, the anchoring end of the waterproof rubber strip is directly wrapped by the compacted concrete to achieve the effect of waterproof sealing, and the beam joint is completely sealed.
[0037] To ensure that the expansion joint does not leak from both sides of the bridge, Figure 5 As shown, a head 305 is provided at both ends of the expansion joint to prevent water from leaking from both sides, and a drainage pipe 306 is provided at a low position between the head 305 and the waterproof rubber strip. The accumulated water in the waterproof device is discharged from the lower end of the transverse slope of the bridge deck to the drainage pipe through the drainage pipe 306, and introduced into the overall drainage system of the bridge.
[0038] The embodiments described above are part of the embodiments of the utility model, but not all of the embodiments. The detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model claimed for protection, but only represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
Claims
1. A pre-stressed shock-absorbing comb plate expansion and contraction device, comprising a cross-slot comb plate and a fixed comb plate, wherein the cross-slot comb plate is supported by a first anchor assembly, and the fixed comb plate is supported by a second anchor assembly, and a bridge expansion joint is located below the cross-slot comb plate, and a waterproof device for sealing the cooperation between the first anchor assembly and the second anchor assembly is installed at the bridge expansion joint, characterized in that: A flexible shock absorbing device is provided at the junction of the cross-slot comb plate and the fixed comb plate, and the flexible shock absorbing device is installed on the second anchoring assembly.
2. The preloaded shock-absorbing comb plate telescopic device according to claim 1, characterized in that: The second anchoring assembly includes a second anchoring plate, a second supporting plate, a second connecting steel bar, a second embedded steel bar and a second longitudinal steel bar. A second supporting plate is connected to the second anchoring plate on one side of the waterproof device. A second connecting steel bar is fixed to the second anchoring plate. The second connecting steel bar is connected to the second embedded steel bar. The second longitudinal steel bar crosses the second connecting steel bar and the second embedded steel bar. A groove for installing a flexible shock absorbing device is provided between the second supporting plate and the second anchoring plate.
3. The pre-loaded shock-absorbing comb plate telescopic device according to claim 2, characterized in that: The longitudinal section of the groove is L-shaped, and the flexible shock absorbing device includes a rubber bearing and a flexible support.
4. The pre-loaded shock-absorbing comb plate telescopic device according to claim 1 or 2, characterized in that: The first anchoring assembly includes a first anchoring plate, a first supporting plate, a first connecting steel bar, a first embedded steel bar and a first longitudinal steel bar. The first supporting plate is connected to a side of the first anchoring plate located at the waterproof device, the first connecting steel bar is fixed to the first anchoring plate, the first connecting steel bar is connected to the first embedded steel bar, and the first longitudinal steel bar crosses the first connecting steel bar and the first embedded steel bar.
5. The pre-stressed shock-absorbing comb plate telescopic device according to claim 1 or 2, characterized in that: The waterproof device forms a water flow channel with a U-shaped cross section in the expansion joint.
6. The pre-loaded shock-absorbing comb plate telescopic device according to claim 5, characterized in that: The waterproof device comprises a U-shaped waterproof rubber strip, both sides of which are fixed on anchoring pieces through fixing pieces respectively, and the anchoring pieces are used to be fixed in the concrete of the beam body.
7. The pre-stressed shock-absorbing comb plate telescopic device according to claim 1 or 2, characterized in that: There are raised heads at both ends of the expansion joint of the bridge, and a drainage pipe is provided at a low position between the raised head and the waterproof rubber strip. The accumulated water in the waterproof device is introduced into the overall drainage system of the bridge through the drainage pipe.
8. The pre-stressed shock-absorbing comb plate telescopic device according to claim 1 or 2, characterized in that: The cross-slot comb tooth plate and the fixed comb tooth plate are on the same horizontal plane, the teeth are arranged in a staggered manner, and a telescopic area is formed between the two teeth.
9. The pre-stressed shock-absorbing comb plate telescopic device according to claim 1 or 2, characterized in that: The surfaces of the cross-slit comb tooth plate and the fixed comb tooth plate are both provided with anti-slip grooves.