Universal seamless grid type telescopic device

Abstract

The universal seamless grid type telescopic device comprises a grid type telescopic panel, a seam covering telescopic supporting plate, an anchoring plate and a telescopic displacement box, the telescopic displacement box is of a sliding groove structure with an opening in the side face, and the grid type telescopic panel is arranged on the seam covering telescopic supporting plate; the left end and the right end of the grid type telescopic panel are connected to the anchoring plate and the telescopic displacement box correspondingly, the upper face and the lower face of the seam covering telescopic supporting plate are both covered with supporting sliding plates, one end of the seam covering telescopic supporting plate is vertically and rotationally connected with the anchoring plate, and the other end of the seam covering telescopic supporting plate is inserted into the telescopic displacement box and slidably connected with the telescopic displacement box. The telescopic device can achieve thermal expansion and cold contraction according to weather changes to conduct self-displacement telescopic sliding adjustment, the vertical rotating structure can adapt to the balance height difference of a bridge caused by unbalanced settlement of a roadbed pier, and the adverse effect caused by settlement of part of structures of two adjacent beam plates is relieved; according to the expansion device, bolt fastening installation of an original comb plate expansion device is replaced by the anchoring plate, and anchoring of the anchoring plate is firmer.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge expansion joints, and in particular relates to a universal seamless grid-type expansion device. Background Art

[0002] As an important auxiliary structure of the bridge, the expansion joint of the bridge is mainly used to meet the deformation requirements of the bridge deck. It is in direct contact with high-speed vehicles. Once there is a problem, it will seriously affect driving safety. In recent years, comb plate expansion joints have been widely used, but it has been found that this type of expansion joint has more prominent problems during use, such as bolt falling off, abnormal noise, damage to the anchor area, and the tooth plate falling off together with the concrete in the anchor area. After 3-5 years of opening to traffic, it shows a trend of frequent damage, and the maintenance frequency is high. After damage, it is easy to cause rollovers and tire blowouts for vehicles, which has a great impact on the safe operation of the highway. Therefore, it is necessary to discuss the main diseases and causes of the expansion joints of the comb plate of bridges and propose effective maintenance measures.

[0003] After analysis, the disadvantages of ordinary comb plate expansion joints are as follows:

[0004] 1. The damage is highly concealed, and there are great safety hazards. In the later stage of management and maintenance, it is difficult for maintenance technicians to judge whether the concrete in the anchorage area under the comb plate is damaged. When the bolts and the concrete in the anchorage area around the expansion joint are intact, it is easy to misjudge that the expansion joint is in good technical condition, resulting in the tooth plate and the concrete in the anchorage area falling off as a whole after the disease further develops, causing the vehicle to roll over.

[0005] 2. Road garbage is difficult to clean up by oneself. If maintenance is not in place, garbage cleaning will be difficult.

[0006] 3. High maintenance cost in the later stage, frequent maintenance and difficult construction. After the project was completed and entered the trial operation period, many problems began to appear in the expansion joints of the comb plate. Frequent maintenance led to increased operating costs, and maintenance was difficult. The maintenance workers had high requirements and required professional tools to open the comb plate to check the concrete damage in the anchoring area. The repair was difficult and the damage was difficult to eradicate after maintenance, and the service life was short. Summary of the invention

[0007] In view of this, the purpose of the present invention is to provide a universal seamless grid telescopic device to address the deficiencies of the prior art. The telescopic device can achieve thermal expansion and contraction according to weather changes to perform self-displacement, telescopic and sliding adjustment. The vertical rotation structure can adapt to the balance height difference caused by the uneven settlement of the roadbed and piers of the bridge, and reduce the adverse effects of the partial structural settlement of the two adjacent beams and slabs. The device is simple to install, easy to construct, and convenient for later maintenance.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] The universal seamless grid telescopic device comprises a grid telescopic panel, a cover seam telescopic support plate, an anchor plate and a telescopic displacement box. The telescopic displacement box is a slide groove structure with a side opening. The grid telescopic panel is arranged on the cover seam telescopic support plate, and the left and right ends of the grid telescopic panel are respectively connected to the anchor plate and the telescopic displacement box. The upper and lower surfaces of the cover seam telescopic support plate are covered with supporting slide plates. One end of the cover seam telescopic support plate is vertically rotatably connected to the anchor plate, and the other end of the cover seam telescopic support plate is inserted into the telescopic displacement box and slidably connected to it.

[0010] In order to better realize the present invention, further optimization is made in the above structure. The telescopic displacement box includes an upper cover plate, a lower support plate and a rear baffle. The upper cover plate and the lower support plate are respectively connected to the upper and lower sides of the rear baffle. The cover seam telescopic support plate is inserted between the upper cover plate and the lower support plate and is slidably connected thereto.

[0011] In order to better realize the present invention, the above structure is further optimized, anchor bolts are vertically arranged on the lower support plate, the anchor bolts pass upward through the cover seam telescopic support plate, and holes are opened on the cover seam telescopic support plate to accommodate the left and right movement of the anchor bolts.

[0012] In order to better realize the present invention, further optimization is made in the above structure, and waterproof sealing members are provided at the bottom of the grid-type telescopic panel and the top of the lower support plate.

[0013] In order to better realize the present invention, further optimization is made in the above structure, and the waterproof sealing component is a sealing water stop strip.

[0014] In order to better realize the present invention, further optimization is made in the above structure, and sliding supports are provided at the bottom of the grid-type telescopic panel and the top of the lower support plate.

[0015] In order to better realize the present invention, further optimization is made in the above structure, and the sliding support is a polytetrafluoroethylene slide plate.

[0016] In order to better realize the present invention, further optimization is made in the above structure, and the interior of the grid-type telescopic panel is a grid structure formed by connecting trapezoidal telescopic ribs that are wider at the bottom and narrower at the top.

[0017] In order to better realize the present invention, further optimization is made in the above structure, and the seam cover telescopic support plate and the anchor plate are rotatably connected through a vertical steering shaft and a steering shaft sleeve.

[0018] In order to better realize the present invention, further optimization is made in the above structure, and the supporting slide plate is a stainless steel slide plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The universal seamless grid telescopic device provided by the present invention has left and right sides respectively connected to the embedded steel bars of the beams and slabs on both sides of the bridge, and has a fixed end and a telescopic end. During long-term use, the universal seamless grid telescopic panel is integrally connected with the telescopic end and the fixed end. The relative sliding between the seam cover telescopic support plate and the telescopic displacement box can realize thermal expansion and contraction according to weather changes to perform self-displacement telescopic sliding adjustment of the telescopic device. The vertical rotation structure can adapt to the balance height difference of the bridge caused by uneven settlement of the roadbed and piers, and reduce the adverse effects of partial structural settlement on two adjacent beams and slabs. Vehicles can pass through the telescopic device more smoothly and safely during driving. The telescopic device realizes the bolt tightening installation of the anchor plate instead of the original comb plate telescopic device. The anchor plate is more firmly anchored. The grid design can effectively reduce the noise generated when the vehicle passes. The hidden sealing water stop strip effectively eliminates the problems of rubber aging and easy damage. The installation is simple, the construction is easy, and the later maintenance is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the universal seamless mesh telescopic device of the present invention;

[0023] Figure 2 This is a schematic diagram of the state of the grid-type telescopic panel of the present invention at high temperature;

[0024] Figure 3 It is a schematic diagram of the state of the grid-type telescopic panel of the present invention at low temperature.

[0025] In the figure:

[0026] 1-grid telescopic panel, 2-covering telescopic support plate, 3-anchor plate, 4-telescopic displacement box, 401-upper cover plate, 402-lower support plate, 403-rear baffle, 5-supporting slide plate, 6-anchor bolts, 7-waterproof seal, 8-sliding support, 9-vertical steering shaft, 10-steering shaft sleeve. DETAILED DESCRIPTION

[0027] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise specified, the meaning of "plurality" is two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 an indirect connection through an intermediate medium. 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] like Figure 1As shown, the structural schematic diagram of the universal seamless grid telescopic device provided by the present application includes a grid telescopic panel 1, a cover seam telescopic support plate 2, an anchor plate 3 and a telescopic displacement box 4, the telescopic displacement box 4 is a slide groove structure with a side opening, the grid telescopic panel 1 is arranged on the cover seam telescopic support plate 2, and the left and right ends of the grid telescopic panel 1 are respectively connected to the anchor plate 3 and the telescopic displacement box 4, and the upper and lower surfaces of the cover seam telescopic support plate 2 are covered with a supporting slide plate 5, which is a stainless steel slide plate. The left side of the cover seam telescopic support plate 2 is vertically rotatably connected to the anchor plate 3, and the cover seam telescopic support plate 2 swings up and down in the vertical direction, and can be adjusted in height. The right side of the cover seam telescopic support plate 2 is inserted into the telescopic displacement box 4 and slidably connected to it. The universal seamless mesh telescopic device provided by the present invention has a left anchor plate 3 and a right telescopic displacement box 4 that are respectively connected to the embedded steel bars of the beams and slabs on both sides of the bridge, with the left side being a fixed end and the right side being a telescopic end. During long-term use, the universal seamless mesh telescopic panel is integrally connected to the telescopic end and the fixed end, and the mesh telescopic panel 1 is automatically telescopically adjusted, and the relative sliding between the seam-covering telescopic support plate 2 and the telescopic displacement box 4 can form self-adjustment according to the thermal expansion and contraction of the bridge, and can slide left and right to adjust the width between the expansion joints of the bridge, and can also stably balance the height difference. The left side of the seam-covering telescopic support plate 2 is vertically rotatably connected to the anchor plate 3, which can adapt to the balanced height difference caused by uneven settlement of the roadbed and piers of the bridge, and reduce the adverse effects of partial structural settlement on the two adjacent beams and slabs. The telescopic device realizes the bolt-tightening installation of the anchor plate instead of the original comb plate telescopic device, and the anchor plate is more firmly anchored and strong, and the installation is convenient and quick, which reduces the maintenance cost, reduces the amount of metal raw materials, and reduces the cost of use.

[0031] In this embodiment, the telescopic displacement box 4 includes an upper cover plate 401, a lower support plate 402 and a rear baffle 403. The upper cover plate 401 and the lower support plate 402 are respectively connected to the upper and lower sides of the rear baffle 403, and the right side of the cover seam telescopic support plate 2 is inserted between the upper cover plate 401 and the lower support plate 402 and is slidably connected to them.

[0032] In order to prevent the telescopic cover plate 2 from sliding out of the telescopic displacement box 4, an anchor bolt 6 is vertically arranged on the lower support plate 402, and the anchor bolt 6 passes upward through the telescopic cover plate 2, and a hole is opened on the telescopic cover plate 2 to accommodate the left and right movement of the anchor bolt 6. The anchor bolt 6 is fixedly connected to the concrete of the beam and slab to limit the movement distance of the telescopic cover plate 2 and prevent the telescopic cover plate 2 from slipping out of the telescopic displacement box 4. On this basis, the hole opened on the support plate 2 ensures that the telescopic cover plate 2 can slide freely left and right with the telescopic displacement box 4.

[0033] In order to improve the waterproof sealing performance, waterproof seals 7 are provided on the right side of the bottom of the grid-type telescopic panel 1 and on the top of the lower support plate 402. The waterproof seals 7 are sealed water stop strips. The present application adopts a hidden multi-sealing waterproof system to effectively avoid the long-term exposure of the original telescopic device water stop strip to the air, and solves the problems of easy aging, difficult replacement due to water leakage, and high maintenance cost.

[0034] In order to improve the smoothness of the sliding connection, a sliding support 8 is provided on the right side of the bottom of the grid-type telescopic panel 1 and on the top of the lower support plate 402, so that the cover seam telescopic support plate 2 can maintain a good sliding effect during long-term use. The sliding support 8 is a polytetrafluoroethylene slide plate, and the low friction coefficient (μf≤0.08) between the polytetrafluoroethylene plate and the stainless steel plate can be used to ensure that the displacement of the supported parts in the horizontal direction is not restricted.

[0035] like Figure 2 and Figure 3 As shown, the inside of the grid-type expansion panel 1 is a grid structure formed by connecting trapezoidal expansion ribs that are wide at the bottom and narrow at the top. The narrow-at-top-wide-at-bottom trapezoidal design can realize the self-cleaning of road garbage generated by vehicles during the bridge stress expansion and contraction process, which can effectively prevent the expansion and contraction of the bridge from being affected by the failure to clean up road garbage in time, causing damage to the bridge; and the grid-type structure can effectively block the transmission of noise when the vehicle is driving, and reduce the transmission noise, so as to achieve the effect of reducing noise during the driving of the vehicle; and the grid-type design plays a good anti-skid role when the vehicle passes through the bridge in rainy and snowy weather, effectively ensuring the safety of the vehicle when passing the bridge.

[0036] In the present embodiment, the telescopic cover plate 2 and the anchor plate 3 are rotatably connected via a vertical steering shaft 9 and a steering shaft sleeve 10. The rotatable connection between the telescopic cover plate 2 and the anchor plate 3 can realize automatic vertical adjustment of the horizontal drop height according to the uneven settlement of the bridge roadbed and piers. Since the right side of the telescopic cover plate 2 adopts the feature of movable connection, the telescopic cover plate 2 can perform a slight vertical rotation, thereby reducing the height difference between two adjacent beams and slabs caused by the settlement of part of the structure, making the driving of vehicles safer and more stable.

[0037] Working principle:

[0038] The universal seamless grid-type telescopic device provided in the present application is arranged on both sides of the expansion joint of the bridge. The left anchor plate 3 and the right telescopic displacement box 4 are respectively connected to the embedded steel bars of the beams and slabs on both sides of the expansion joint. The left side is the fixed end and the right side is the telescopic end. The grid-type telescopic panel 1 at the top can automatically and elastically adjust. The left side of the seam-covering telescopic support plate 2 below it adjusts the height difference between the fixed end and the telescopic end through rotation control, and the right side of the seam-covering telescopic support plate 2 adjusts the width difference between the fixed end and the telescopic end through sliding control, thereby controlling the width and height of the beams and slabs at both ends of the expansion joint of the bridge.

[0039] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. Universal seamless mesh telescopic device, characterized by: The invention comprises a grid-type telescopic panel (1), a cover seam telescopic support plate (2), an anchor plate (3) and a telescopic displacement box (4); the telescopic displacement box (4) is a slide groove structure with a side opening; the grid-type telescopic panel (1) is arranged on the cover seam telescopic support plate (2); and the left and right ends of the grid-type telescopic panel (1) are respectively connected to the anchor plate (3) and the telescopic displacement box (4); the upper and lower surfaces of the cover seam telescopic support plate (2) are covered with supporting slide plates (5); one end of the cover seam telescopic support plate (2) is vertically rotatably connected to the anchor plate (3); and the other end of the cover seam telescopic support plate (2) is inserted into the telescopic displacement box (4) and slidably connected thereto.

2. The universal seamless mesh telescopic device according to claim 1, characterized in that: The telescopic displacement box (4) comprises an upper cover plate (401), a lower support plate (402) and a rear baffle plate (403); the upper cover plate (401) and the lower support plate (402) are respectively connected to the upper and lower sides of the rear baffle plate (403); the cover seam telescopic support plate (2) is inserted between the upper cover plate (401) and the lower support plate (402) and is slidably connected thereto.

3. The universal seamless mesh telescopic device according to claim 2, characterized in that: An anchor bolt (6) is vertically arranged on the lower support plate (402), and the anchor bolt (6) passes through the seam cover telescopic support plate (2) upwards, and the seam cover telescopic support plate (2) is provided with a hole for accommodating the left and right movement of the anchor bolt (6).

4. The universal seamless mesh telescopic device according to claim 3, characterized in that: The bottom of the grid-type telescopic panel (1) and the top of the lower support plate (402) are both provided with waterproof sealing members (7).

5. The universal seamless mesh telescopic device according to claim 4, characterized in that: The waterproof seal (7) is a sealing water stop strip.

6. The universal seamless mesh telescopic device according to claim 4, characterized in that: The bottom of the grid-type telescopic panel (1) and the top of the lower support plate (402) are both provided with sliding supports (8).

7. The universal seamless mesh telescopic device according to claim 6, characterized in that: The sliding support (8) is a polytetrafluoroethylene sliding plate.

8. The universal seamless mesh telescopic device according to any one of claims 1 to 7, characterized in that: The interior of the grid-type telescopic panel (1) is a grid structure formed by connecting trapezoidal telescopic ribs that are wider at the bottom and narrower at the top.

9. The universal seamless mesh telescopic device according to claim 8, characterized in that: The seam-covering telescopic support plate (2) and the anchor plate (3) are rotatably connected via a vertical steering shaft (9) and a steering shaft sleeve (10).

10. The universal seamless mesh telescopic device according to claim 1, characterized in that: The supporting slide plate (5) is a stainless steel slide plate.

Images