Anti-warping tooth multi-directional displacement device and its application in comb plate type telescopic device

Abstract

The present invention belongs to the auxiliary device of the bridge expansion device, and in particular refers to the application of a multi-directional displacement device for preventing tooth warping in a comb-tooth plate type expansion device. The multi-directional displacement device for preventing tooth warping includes a first fixed tooth plate fixed to the upper surface of the concrete structure on one side of the expansion joint by a first anchoring device, and a movable tooth plate mounted on the upper surface of the concrete structure on both sides of the expansion joint and having the inner side adapted to the tooth shape of the first fixed tooth plate; the side wall and the bottom of the self-resetting mechanism are buried in the concrete structure on the inner lower surface of the movable tooth plate, and also include a tooth plate pad, the upper surface of the tooth plate pad is attached to the movable tooth plate and the bottom surface of the first fixed tooth plate, and the top of the self-resetting mechanism passes through the tooth plate pad to cooperate with the lower part of the movable tooth plate and guides the sliding cooperation along the displacement direction of the movable tooth plate. The present invention solves the problems existing in the prior art that the tooth plate of the expansion device is easy to warp up and causes the tooth plate to be damaged. It has the advantages of effectively preventing the movable tooth plate from warping up, improving the stress condition of the movable tooth plate, and reducing the vibration and noise caused by displacement.

Description

Technical Field

[0001] The invention belongs to an accessory device of a bridge expansion device, and in particular refers to a multi-directional displacement device for preventing warping of teeth and the application of the device in a comb-tooth plate type expansion device. Background Art

[0002] The bridge expansion device is an important component of the bridge. The cross-gap comb-type tooth plate expansion device currently used in China has a main tooth plate fixed to one side of the beam end by a bolt at one end. The tooth plate spans the gap at the beam end, and one side of the comb-type teeth is far away from the fixed end. The tooth plate is easy to warp up, causing damage to the tooth plate. Vehicles running over the upturned tooth plate can easily cause damage to the vehicle.

[0003] In recent years, bridge construction has developed rapidly, and more and more large cross-border bridges, cable-stayed bridges, suspension bridges and other bridges are being built. The traditional comb-shaped toothed expansion device can only meet the longitudinal and lateral displacement requirements because the tooth plates are fixed on both sides of the beam ends by bolts. It is difficult to adapt to the vertical angular displacement caused by loads and other external forces of the bridge.

[0004] Based on the above reasons, the telescopic device must first ensure strength to resist impact, secondly, to achieve vibration reduction and noise reduction, and thirdly, to achieve multi-directional displacement. Existing telescopic devices are already difficult to meet the above requirements at the same time, and various problems will occur during use. Therefore, it is imperative to study a telescopic device that can achieve anti-warping teeth and meet the requirements of multi-directional displacement of the beam body. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-directional displacement device for preventing tooth warping and its application in a comb-tooth plate telescopic device, which can effectively prevent the tooth plate from warping, adapt to the multi-directional displacement of the bridge space caused by various factors, and ensure driving comfort.

[0006] The overall technical concept of the present invention is:

[0007] The multi-directional displacement device for preventing warped teeth comprises a first fixed tooth plate fixed to the upper surface of the concrete structure on one side of the expansion joint by a first anchoring device, and a movable tooth plate mounted on the upper surface of the concrete structure on both sides of the expansion joint and with the inner side adapted to the tooth shape of the first fixed tooth plate; the side wall and bottom of the self-resetting mechanism are buried in the concrete structure on the inner lower surface of the movable tooth plate, and also comprises a tooth plate pad, the upper surface of the tooth plate pad is attached to the movable tooth plate and the bottom surface of the first fixed tooth plate, and the top of the self-resetting mechanism passes through the tooth plate pad to cooperate with the lower part of the movable tooth plate and guides the sliding cooperation along the displacement direction of the movable tooth plate.

[0008] Application of anti-warping tooth multi-directional displacement device in comb-tooth plate telescopic device.

[0009] The specific technical concepts of the present invention include:

[0010] The main function of the self-resetting mechanism is to pull the tooth end of the movable tooth plate to eliminate the height difference caused by the settlement of the beam body; when a vertical impact comes, it always pulls the inner tooth end of the movable tooth plate so that the inner tooth end is always in close contact with the bottom surface or the tooth plate pad to prevent the tooth end from tilting up. The self-resetting mechanism includes a cylinder body with a closed lower end and an open top end, a cylinder rod arranged in the cylinder body along the longitudinal direction, a locking gasket arranged at the lower end of the cylinder rod, the top of the cylinder rod forms a guiding sliding fit with the lower surface of the movable tooth plate along the displacement direction of the movable tooth plate, an elastic element is fixed on the cylinder rod between the guide groove and the locking gasket, and a matching gap is provided between the lower end of the cylinder rod and the bottom of the cylinder body.

[0011] In order to achieve effective cooperation between the movable tooth plate and the top of the cylinder rod, the preferred technical implementation means is that the top of the cylinder rod is provided with a connecting portion or an interface adapted to the lower surface of the movable tooth plate.

[0012] A more preferred technical implementation is that the connection part or interface adopts a slider disposed at the top of the cylinder rod, and the slider and the guide groove provided on the lower surface of the movable tooth plate along the displacement direction of the movable tooth plate adopt a guide sliding fit. The slider can adopt a nut matched with or integrally formed with the top of the cylinder rod, a dovetail slider, etc., which do not deviate from the technical essence of the present invention.

[0013] In order to facilitate the effective cooperation between the slider and the guide groove, facilitate the manufacturing, molding and assembly of parts and components, and reduce the impact of parts on the concrete structure, the preferred technical implementation method is that the third anchoring device is fixed to the first fixed tooth plate, and the slider passes through the tooth plate pad and slides with the guide groove.

[0014] In order to ensure that the elastic-plastic body of the cylinder rod can play a better role when it is under compression and tension, the fitting clearance between the lower end of the cylinder rod and the bottom of the cylinder body is greater than 1mm.

[0015] The elastic element is made of one of rubber, polyurethane, a combination of rubber and steel plate, and a spring.

[0016] The main function of the cylinder body is to accommodate the elastic-plastic body and the cylinder rod, and at the same time reserve a certain space for the displacement and rotation of the cylinder rod. Its specific shape can be flexibly selected and set according to needs. The preferred and feasible technical means include that the cylinder body adopts one of the shapes of a cylinder, an elliptical cylinder, a regular polygonal prism, a rectangular parallelepiped or a cube.

[0017] In order to make the outer side of the movable tooth plate adaptively adjusted with the multi-directional displacement of the bridge space, so as to improve the stress condition of the movable tooth plate and further reduce the possibility of its end warping, the preferred technical implementation means is that the outer side of the movable tooth plate is connected with a multi-directional displacement device, and the side wall and bottom of the multi-directional displacement device are fixed in the concrete structure on the other side of the expansion joint.

[0018] A more preferred implementation method of the multi-directional displacement device is that the multi-directional displacement device includes a control seat whose side walls and bottom are fixed to the concrete structure on the other side of the expansion joint, a groove is provided on the upper surface of the control seat, and the bottom of the outer end of the movable tooth plate extends to form a rotating shaft adapted to the groove, and a rotating adjustment block with an elastic function is arranged between the control seat on the inner side of the rotating shaft and the lower surface of the movable tooth plate.

[0019] In order to improve the smoothness of the transition between the bridge deck and the fixed tooth plate, the preferred technical implementation method is to also include a second fixed tooth plate, the inner end of which is arranged above the rotating shaft and fixed to the upper surface of the concrete structure on the other side of the expansion joint through a second anchoring device.

[0020] In order to effectively protect the control seat in the concrete structure, a more preferred technical implementation means is that the lower surface of the inner end of the second fixed tooth plate is fixed to the upper surface of the outer end of the control seat.

[0021] The first, second and third anchoring devices in the present invention can adopt anchoring bars, anchoring plates or other anchoring components, all of which do not deviate from the technical essence of the present invention. Among them, it is more preferred that the first anchoring device and the second anchoring device are preferably C-type anchoring bars; the third anchoring device serves as an auxiliary reinforcement for the first anchoring device, and preferably adopts L-type anchoring bars.

[0022] The applicant needs to state:

[0023] In the description of the present invention, the orientations or positional relationships indicated by terms such as "upper surface", "both sides", "inside", "bottom", "top", "lower surface", "lower part", "lower end", "top end", "outer end", "outer side", "longitudinal" and the like are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of simplifying the description of the present invention. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation and therefore cannot be understood as limitations on the present invention. In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] The substantial features and significant technical advances of the present invention are:

[0025] 1. The present invention adopts a self-resetting mechanism as the main technical means to prevent the movable tooth plate from warping. Its overall structure is simple and easy to use and maintain. The self-resetting mechanism is connected to the movable tooth plate through a slider. When the beam body settles, a height difference is generated between the beam bodies at both ends of the expansion joint. The movable tooth plate is vertically displaced as the shaft rotates, and the tooth end tends to warp up. The self-resetting structure pulls the tooth end of the movable tooth plate to eliminate the height difference caused by the settlement of the beam body. When a vertical impact occurs, the self-resetting structure always pulls the tooth end of the movable tooth plate, so that the tooth end is always in close contact with the bottom surface or the tooth plate pad to prevent the tooth end from warping up.

[0026] 2. The movement of the movable tooth plate at one end of the telescopic device is limited by a multi-directional displacement device, and the tooth end is adsorbed and connected to the bottom surface or the tooth plate pad by a self-resetting structure to avoid the vibration of the tooth end of the movable tooth plate caused by the running of the vehicle, thereby achieving the effect of reducing noise and improving the driving comfort of the driver and passengers.

[0027] 3. The use of a multi-directional displacement device, through the movement and deformation of the rotating shaft and the rotating adjustment block with elastic function, can adapt to the multi-directional displacement of the bridge space caused by various factors such as bridge temperature change displacement, concrete shrinkage creep, vehicle load, wind load, earthquake, etc. While improving the stress condition of the movable tooth plate, it not only further reduces the vibration and noise caused by the displacement, but also improves the stress condition of the movable tooth plate, thereby effectively improving its durability.

[0028] 4. The adoption of the second fixed tooth plate can, firstly, ensure a smooth transition between the bridge deck and the fixed tooth plate, further improve the stability of vehicle passage, and secondly, prevent the movable tooth plate from moving freely while ensuring the rotation of the movable tooth plate.

[0029] 5. The anchoring device in the present invention preferably adopts C-shaped or L-shaped anchoring bars without bolt structure, which can effectively prevent the bolts from loosening during high-frequency vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings of the present invention include:

[0031] Figure 1 It is an outline diagram of the present invention.

[0032] Figure 2 yes Figure 1 AA view.

[0033] Figure 3 It is a structural schematic diagram of the multi-directional displacement device in the present invention.

[0034] Figure 4 It is a schematic diagram of the assembly structure of the self-resetting mechanism in the present invention.

[0035] The reference numerals in the accompanying drawings are as follows:

[0036] 1. Second anchoring device; 2. Second fixed tooth plate; 3. Multi-directional displacement device; 3A. Control seat; 3B. Rotating shaft; 3C. Rotating adjustment block; 4. Movable tooth plate; 5. Tooth plate pad; 6. Self-resetting mechanism; 6A. Slider; 6B. Elastic element; 6C. Locking gasket; 6D. Cylinder rod; 6E. Cylinder body; 7. Third anchoring device; 8. First fixed tooth plate; 9. First anchoring device; 10. Expansion joint. DETAILED DESCRIPTION

[0037] The following further describes the embodiments of the present invention in conjunction with the accompanying drawings, but does not limit the present invention. The protection scope of the present invention shall be based on the contents recorded in the claims, and any equivalent technical means replaced according to the description shall not depart from the protection scope of the present invention.

[0038] The overall structure of this embodiment is as shown in the figure, wherein the anti-warping tooth multi-directional displacement device includes a first fixed tooth plate 8 fixed to the upper surface of the concrete structure on one side of the expansion joint 10 by a first anchoring device 9, and a movable tooth plate 4 mounted on the upper surface of the concrete structure on both sides of the expansion joint 10 and the inner side of which is adapted to the tooth shape of the first fixed tooth plate 8; the side wall and bottom of the self-resetting mechanism 6 are buried in the concrete structure on the inner lower surface of the movable tooth plate 4, and also include a tooth plate pad 5, the upper surface of the tooth plate pad 5 is in contact with the movable tooth plate 4 and the bottom surface of the first fixed tooth plate 8, the top of the self-resetting mechanism 6 passes through the tooth plate pad 5 and cooperates with the lower part of the movable tooth plate 4 and guides the sliding cooperation along the displacement direction of the movable tooth plate 4.

[0039] Application of anti-warping tooth multi-directional displacement device in comb-tooth plate telescopic device.

[0040] The self-resetting mechanism 6 includes a cylinder body 6E with a closed lower end and an open top end, a cylinder rod 6D arranged longitudinally in the cylinder body 6E, and a locking gasket 6C arranged at the lower end of the cylinder rod 6D. The top of the cylinder rod 6D forms a guiding sliding fit with the lower surface of the movable tooth plate 4 along the displacement direction of the movable tooth plate. An elastic element 6B is fixed on the cylinder rod 6D between the guide groove and the locking gasket 6C, and a fitting gap is provided between the lower end of the cylinder rod 6D and the bottom of the cylinder body 6E.

[0041] The top of the cylinder rod 6D is provided with a connecting portion or an interface adapted to the lower surface of the movable tooth plate 4.

[0042] The connection part or interface adopts a slider 6A arranged at the top of the cylinder rod 6D, and the slider 6A and the guide groove opened on the lower surface of the movable tooth plate 4 along the displacement direction of the movable tooth plate adopt a guide sliding fit. The slider adopts a nut matched with or integrally formed with the top of the cylinder rod.

[0043] The third anchoring device 7 is fixed to the first fixed tooth plate 8, and the sliding block 6A passes through the tooth plate pad 5 and is guided and slidably matched with the guide groove.

[0044] The clearance between the lower end of the cylinder rod 6D and the bottom of the cylinder body 6E is greater than 1 mm.

[0045] The elastic element 6B is made of one of rubber, polyurethane, a combination of rubber and steel plate, and a spring.

[0046] The cylinder body 6E is cylindrical.

[0047] The outer side of the movable tooth plate 4 is connected to a multi-directional displacement device 3 , and the side wall and bottom of the multi-directional displacement device 3 are fixed in the concrete structure on the other side of the expansion joint 10 .

[0048] The multi-directional displacement device 3 includes a control seat 3A whose side walls and bottom are fixed in the concrete structure on the other side of the expansion joint 10. A groove is provided on the upper surface of the control seat 3A. The bottom of the outer end of the movable tooth plate 4 extends to form a rotating shaft 3B adapted to the groove. A rotating adjustment block 3C with an elastic function is arranged between the control seat 3A on the inner side of the rotating shaft 3B and the lower surface of the movable tooth plate 4.

[0049] It also includes a second fixed tooth plate 2 , the inner end of which is mounted above the rotating shaft 3B and is fixed to the upper surface of the concrete structure on the other side of the expansion joint 10 through a second anchoring device 1 .

[0050] The inner lower surface of the second fixed tooth plate 2 is fixed to the outer upper surface of the control seat 3A.

[0051] In this embodiment, the first anchoring device 9 and the second anchoring device 1 use C-shaped anchoring bars, and the third anchoring device 7 uses L-shaped anchoring bars.

[0052] In order to verify the technical effect of this embodiment, the applicant conducted the following data verification:

[0053] Through force analysis and calculation, taking the 160-type telescopic device as an example, the thickness of the tooth plate is 30mm thick Q355 steel plate, the length of a single tooth plate module is 1m, the thickness of the active tooth plate guide groove bearing the tension part is 9mm, and the elastic element is a combination of steel plate and rubber. Each self-reset device can withstand a tension of >10KN. If three self-reset devices are set for each active tooth plate, the tension is >30kN / m. Referring to the standard GB / T 38387-2019 "Bridge Rubber Noise Reduction Telescopic Device", the permanent magnet adsorption force of the 160-type telescopic device is ≥10kN / m. The product in this embodiment is far superior to this technical indicator. Compared with the magnetic telescopic device, the magnet adsorption function is safer and more reliable.

Claims

1. A multi-directional displacement device for preventing warping of teeth, comprising a first fixed tooth plate (8) fixed to the upper surface of a concrete structure on one side of an expansion joint (10) by a first anchoring device (9), and a movable tooth plate (4) arranged on the upper surface of the concrete structure on both sides of the expansion joint (10) and having an inner side adapted to the tooth shape of the first fixed tooth plate (8); characterized in that The side wall and bottom of the self-resetting mechanism (6) are buried in the concrete structure of the inner lower surface of the movable tooth plate (4), and also include a tooth plate pad (5), the upper surface of the tooth plate pad (5) is in contact with the bottom surface of the movable tooth plate (4) and the first fixed tooth plate (8), the top of the self-resetting mechanism (6) passes through the tooth plate pad (5) and cooperates with the lower part of the movable tooth plate (4) and guides and slides along the displacement direction of the movable tooth plate (4); the self-resetting mechanism (6) includes a cylinder body (6E) with a closed lower end and an open top end, a cylinder rod (6D) longitudinally arranged in the cylinder body (6E), and a locking gasket (6C) arranged at the lower end of the cylinder rod (6D), the top of the cylinder rod (6D) forms a guide and slides with the lower surface of the movable tooth plate (4) along the displacement direction of the movable tooth plate, and the guide groove and An elastic element (6B) is fixed on the cylinder rod (6D) between the locking washers (6C), and a matching gap is provided between the lower end of the cylinder rod (6D) and the bottom of the cylinder body (6E); the outer side of the movable tooth plate (4) is connected to a multi-directional displacement device (3), the side wall and the bottom of the multi-directional displacement device (3) are fixed in the concrete structure on the other side of the expansion joint (10), and the multi-directional displacement device (3) includes a control seat (3A) whose side wall and the bottom are fixed in the concrete structure on the other side of the expansion joint (10), and a groove is provided on the upper surface of the control seat (3A), and the bottom of the outer end of the movable tooth plate (4) extends to form a rotating shaft (3B) adapted to the groove, and a rotating adjustment block (3C) with an elastic function is provided between the control seat (3A) on the inner side of the rotating shaft (3B) and the lower surface of the movable tooth plate (4).

2. The anti-warping tooth multi-directional displacement device according to claim 1 is characterized in that The top of the cylinder rod (6D) is provided with a connecting portion or an interface adapted to the lower surface of the movable tooth plate (4).

3. The anti-warping tooth multi-directional displacement device according to claim 2 is characterized in that The connecting portion or interface adopts a slider (6A) arranged at the top end of the cylinder rod (6D), and the slider (6A) and the guide groove opened on the lower surface of the movable tooth plate (4) along the displacement direction of the movable tooth plate adopt a guide sliding fit.

4. The anti-warping tooth multi-directional displacement device according to claim 3 is characterized in that The third anchoring device (7) is fixed to the first fixed tooth plate (8), and the sliding block (6A) passes through the tooth plate pad (5) and is guided and slidably matched with the guide groove.

5. The anti-warping tooth multi-directional displacement device according to claim 1, characterized in that The matching clearance between the lower end of the cylinder rod (6D) and the bottom of the cylinder body (6E) is greater than 1 mm.

6. The anti-warping tooth multi-directional displacement device according to claim 1, characterized in that The elastic element (6B) is made of one of rubber, polyurethane, a combination of rubber and steel plate, and a spring.

7. The anti-warping tooth multi-directional displacement device according to claim 1, characterized in that The cylinder body (6E) is in the shape of a cylinder, an elliptical cylinder, a regular polygonal prism, a rectangular parallelepiped or a cube.

8. The anti-warping tooth multi-directional displacement device according to any one of claims 1 to 7, characterized in that It also comprises a second fixed tooth plate (2), the inner end of which is mounted above the rotating shaft (3B) and is fixed to the upper surface of the concrete structure on the other side of the expansion joint (10) through a second anchoring device (1).

9. The anti-warping tooth multi-directional displacement device according to claim 8, characterized in that The lower surface of the inner end of the second fixed tooth plate (2) is fixed to the upper surface of the outer end of the control seat (3A).

10. Application of the anti-warping tooth multi-directional displacement device according to any one of claims 1 to 9 in a comb-tooth plate type telescopic device.

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