Comb plate mounting structure and prestress type anti-loosening environment-friendly assembly telescopic device

Abstract

The utility model provides a comb plate installation structure and a prestress type anti-loosening environment-friendly assembly telescopic device, and belongs to the technical field of bridge telescopic devices. The comb plate mounting structure comprises a comb plate, a first sleeve, an elastic body and a first connecting piece; the comb plate is provided with a first threaded hole; the first sleeve is used for being pre-buried in a beam body, and a containing groove is formed in the surface, close to the comb plate, of the first sleeve. The elastic body is located in the containing groove and provided with a mounting hole. The first connecting piece penetrates through the first threaded hole and the mounting hole and is in threaded connection with the first threaded hole, and the elastic body is configured to be in a compressed state under the pre-tightening effect of the first connecting piece. According to the utility model, the elastic body is arranged to be in a compressed state, and the compressed elastic body is propped against the first connecting piece, so that the connection stability of the elastic body and the first connecting piece is improved; and the compressed elastic body can restore deformation and release energy, so that the first connecting piece abuts against the comb plate, and loosening between the first connecting piece and the comb plate is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge expansion devices, and in particular relates to a comb plate installation structure and a prestressed anti-loosening and environmentally friendly assembly expansion device. Background Art

[0002] The expansion device is an important component of highway bridge pavement. It is designed to adapt to the temperature expansion and contraction of the bridge, the shrinkage and creep of concrete, and the displacement of the bridge under load, ensuring the safety and comfort of vehicle traffic.

[0003] In the related art, the comb plate is fixed to the beam body by bolts. However, in the actual operation of the bridge, the comb plate will be affected by the impact of vehicle loads and other various vibrations, causing the bolts fixing the comb plate to the beam body to loosen, thereby causing damage to the telescopic device and affecting the normal use of the telescopic device.

[0004] In view of this, this application is proposed. Utility Model Content

[0005] The purpose of this application is to provide a comb plate installation structure and a prestressed anti-loosening and environmentally friendly assembly telescopic device to solve the above-mentioned technical problems existing in the prior art.

[0006] This application is implemented as follows:

[0007] In the first aspect, the present application provides a comb plate installation structure, including a comb plate, a first sleeve, an elastomer and a first connecting piece; the comb plate has a first threaded hole; the first sleeve is used to be embedded in the beam body, and a receiving groove is provided on the surface of the first sleeve close to the comb plate; the elastomer is installed in the receiving groove, and the elastomer is provided with a mounting hole; the first connecting piece passes through the first threaded hole and the mounting hole, and is threadedly connected to the first threaded hole, and the elastomer is configured to be in a compressed state under the pre-tightening action of the first connecting piece.

[0008] In a second aspect, the present application provides a prestressed anti-loosening and environmentally friendly assembly telescopic device, including the comb plate installation structure provided in the first aspect.

[0009] The technical solution adopted in this application can achieve the following beneficial effects:

[0010] In the utility model, an elastomer is arranged in the accommodating groove, and a first connecting member is arranged to pass through the first threaded hole and the mounting hole of the elastomer. By tightening the first connecting member, the elastomer is compressed by utilizing the pre-tightening effect of the first connecting member, so that the elastomer is in a compressed state, and the elastomer in the compressed state is pressed against the first connecting member, thereby improving the connection stability between the elastomer and the first connecting member; based on the elastic properties of the elastomer, in the event of looseness between the first connecting member and the comb tooth plate, the compressed elastomer will restore the deformation and release energy, driving the first connecting member to press against the comb tooth plate, thereby avoiding looseness between the first connecting member and the comb tooth plate, thereby ensuring the stability of the connection structure between the first connecting member and the comb tooth plate, improving the stability of the comb tooth plate mounting structure, increasing the reliability of the telescopic device, and extending the service life of the telescopic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments of the utility model or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 The overall schematic diagram of the comb plate installation structure provided by some embodiments of the utility model Figure 1 ;

[0013] Figure 2 The overall schematic diagram of the comb plate installation structure provided by some embodiments of the utility model Figure 2 ;

[0014] Figure 3 It is a top view of the comb plate installation structure provided by some embodiments of the utility model;

[0015] Figure 4 Some embodiments of the present invention provide Figure 3 AA cross-section Figure 1 ;

[0016] Figure 5 yes Figure 4 A schematic diagram of the disassembly of the comb plate installation structure provided in;

[0017] Figure 6 Some embodiments of the present invention provide Figure 3 AA cross-section Figure 2 ;

[0018] Figure 7 yes Figure 4 A schematic diagram of the structure in which the elastic body of the comb plate installation structure provided in is not in a compressed state;

[0019] Figure 8 Some embodiments of the present invention provide Figure 3 BB cross-sectional view;

[0020] Fig. 9 yes Figure 8 A schematic diagram of the disassembly of the comb plate installation structure provided in;

[0021] Fig.10 It is a schematic diagram of the overall structure of the telescopic device provided in some embodiments of the utility model.

[0022] In the figure: 100-comb plate, 110-first threaded hole, 120-second threaded hole, 130-comb teeth, 140-countersunk hole, 210-first sleeve, 211-accommodating groove, 220-elastic body, 221-mounting hole, 230-first connecting piece, 240-nut, 310-second sleeve, 311-threaded groove, 320-second connecting piece, 400-stop base, 410-mounting stop, 420-third threaded hole, 430-fourth threaded hole, 500-anchor bar, 600-water-stop assembly. DETAILED DESCRIPTION

[0023] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.

[0024] The present application embodiment provides a comb plate installation structure, referring to Figures 1 to 9 As shown, by arranging the elastic body 220, the elastic body 220 is in a compressed state, thereby promoting the first connecting member 230 to be firmly connected to the comb plate 100 and preventing the first connecting member 230 from loosening.

[0025] The comb plate 100 installation structure provided in the embodiment of the present application includes a comb plate 100, a first sleeve 210, an elastic body 220 and a first connecting member 230, Figure 4 and Figure 5As shown. The comb plate 100 is a main component of the bridge expansion device, which is directly installed on the surface of the beam body. One end of the comb plate 100 is provided with comb teeth 130, which is arranged near the expansion joint of the bridge, and the comb plate 100 is provided with a first threaded hole 110 for the bolt to pass through. The first sleeve 210 serves as the installation base of the comb plate 100. The first sleeve 210 is used to be pre-buried in the beam body, and the surface of the first sleeve 210 near the comb plate 100 is provided with a receiving groove 211. The receiving groove 211 is used to install the elastic body 220, and the receiving groove 211 limits the circumferential direction of the elastic body 220. The elastic body 220 is arranged in the receiving groove 211, and the elastic body 220 is provided with a mounting hole 221. The first connecting member 230 passes through the first threaded hole 110 and the mounting hole 221, and is threadedly connected with the first threaded hole 110. The elastic body 220 is configured to be in a compressed state under the pre-tightening action of the first connecting member 230.

[0026] In the embodiment of the present application, the first connecting member 230 is inserted into the mounting hole 221 of the elastic body 220, and the first connecting member 230 is tightened, and the elastic body 220 is compressed by the pre-tightening effect of the first connecting member 230, so that the elastic body 220 is in a compressed state. The compressed elastic body 220 is pressed against the first connecting member 230, thereby improving the connection stability between the elastic body 220 and the first connecting member 230; based on the elastic properties of the elastic body 220, when there is looseness between the first connecting member 230 and the comb plate 100, the compressed elastic body 220 will restore the deformation and release energy, driving the first connecting member 230 to press against the comb plate 100, thereby avoiding the looseness between the first connecting member 230 and the comb plate 100, thereby ensuring the stability of the connection structure between the first connecting member 230 and the comb plate 100, improving the stability of the installation structure of the comb plate 100, increasing the reliability of the telescopic device, and extending the service life of the telescopic device.

[0027] There are many ways for the first connecting member 230 to compress the elastic body 220. In some embodiments of the present application, refer to Figure 4As shown, a thread can be provided on the inner wall of the mounting hole 221 of the elastic body 220, and the first connecting member 230 is threadedly connected with the mounting hole 221. The first connecting member 230 passes through the first threaded hole 110 and the mounting hole 221 in sequence, and the first connecting member 230 is fully tightened, so that the elastic body 220 is compressed, so that the elastic body 220 is in a compressed state. The compressed elastic body 220 will occupy the hole space of the mounting hole 221, so the elastic body 220 in a compressed state can be tightly sleeved outside the first connecting member 230, and the friction force between the elastic body 220 and the first connecting member 230 is greater, and relative rotation between the elastic body 220 and the first connecting member 230 is not easy to occur. Even if the comb plate 100 and the first connecting member 230 are loose under the impact of the vehicle load, since the elastic body 220 is in a compressed state, the elastic body 220 will restore the deformation and release energy, so that the first connecting member 230 is pressed against the comb plate 100 again, avoiding the first connecting member 230 and the comb plate 100 from being loose. In addition, since the inner wall of the mounting hole 221 is provided with threads, the friction fastening effect between the elastomer 220 in the compressed state and the first connecting member 230 is stronger, and the fixing effect of the elastomer 220 on the first connecting member 230 is more stable, further avoiding relative rotation between the first connecting member 230 and the elastomer 220, which causes looseness between the first connecting member 230 and the comb plate 100.

[0028] In this arrangement, the elastic body 220 can be pre-fixed in the first sleeve 210 in advance, and the elastic body 220 partially protrudes from the first sleeve 210 as a compression margin. The first sleeve 210 is installed in the beam body according to the normal pre-embedded sequence. After the subsequent comb plate 100 is laid, the first connecting member 230 is inserted into the first threaded hole 110 and the mounting hole 221 in sequence. Figure 7 As shown, at this time, the first connecting member 230 has not been tightened, and the installation has not been completed. Further tighten the first connecting member 230, refer to Figure 4 As shown, the elastic body 220 is in a compressed state, and the installation of the comb plate 100 is completed.

[0029] In other embodiments of the present application, reference Figure 6As shown, threads may not be provided on the inner wall of the mounting hole 221. Specifically, the mounting structure of the comb plate 100 further includes a nut 240, and correspondingly, the first connecting member 230 is a screw rod, which includes a head and a rod portion, and the nut 240 can be sleeved outside the rod portion of the first connecting member 230 and threadedly connected with the first connecting member 230. The head of the first connecting member 230 is disposed in the receiving groove 211 of the first sleeve 210, and the elastomer 220 is also installed in the receiving groove 211, and is sleeved on the rod portion of the first connecting member 230 through the mounting hole 221. After the rod portion of the first connecting member 230 passes through the mounting hole 221, it continues to pass through the first threaded hole 110 of the comb plate 100, and the nut 240 is sleeved on the portion of the first connecting member 230 protruding from the comb plate 100. The nut 240 is tightened so that the nut 240 and the comb plate 100 are tightly arranged, thereby compressing the elastic body 220 located in the receiving groove 211, so that the elastic body 220 is in a compressed state.

[0030] Under such a layout, since the elastic body 220 is in a compressed state, the elastic body 220 has a pressing force on the head of the first connecting member 230 and the comb plate 100, the head of the first connecting member 230 is pressed by the elastic body 220, and the first connecting member 230 is not easy to rotate. Even if the comb plate 100 vibrates under the external force, the comb plate 100 and the first connecting member 230 become loose, resulting in an increase in the distance between the comb plate 100 and the head of the first connecting member 230, but since the elastic body 220 is in a compressed state, the elastic body 220 will restore the deformation and release energy, and re-press between the head of the first connecting member 230 and the comb plate 100, so that the nut 240 still presses against the comb plate 100, avoiding the loose connection between the first connecting member 230 and the comb plate 100, and ensuring the stability of the connection between the first connecting member 230 and the comb plate 100. At the same time, since there is no need to set a thread inside the mounting hole 221, the preparation process of the elastic body 220 is simplified.

[0031] In order to maintain the flatness of the surface of the comb plate 100 and ensure that the vehicle can pass normally, a countersunk hole 140 is provided on the surface of the comb plate 100. The nut 240 is provided in the countersunk hole 140. Figure 6 Or the head of the first connecting member 230 is disposed in the countersunk hole 140, refer to Figure 4 shown.

[0032] In some embodiments of the present application, the comb plate 100 installation structure further includes a second sleeve 310 and a second connector 320 to improve the stability of the connection between the comb plate 100 and the beam body. The second sleeve 310 is similar to the first sleeve 210 and is also used to be embedded in the beam body, and the second sleeve 310 is provided with a thread groove 311 on the surface close to the comb plate 100, as shown in FIG. Fig. 9The comb plate 100 is provided with a second threaded hole 120 corresponding to the thread groove 311. The second connecting member 320 is threadedly provided in the second threaded hole 120 and the thread groove 311 to fix the comb plate 100 and the second sleeve 310. Figure 8 The second connecting member 320 cooperates with the first connecting member 230 to improve the stability of the fixing of the comb plate 100 and the beam body.

[0033] The first connecting member 230 and the second connecting member 320 are both threadedly connected to the comb plate 100. Figure 3 As shown, the first connecting member 230 is close to the comb teeth 130 of the comb tooth plate 100, the second connecting member 320 is far away from the comb teeth 130 of the comb tooth plate 100, and the second connecting member 320 is located on the side of the first connecting member 230 far away from the comb teeth 130 of the comb tooth plate 100. The comb tooth plate 100 has two ends, one end is far away from the expansion joint, and the other end is close to the expansion joint, and the comb teeth 130 are located at the end of the comb tooth plate 100 close to the expansion joint. Under the impact of external loads, the comb teeth 130 end of the comb tooth plate 100 is more likely to vibrate than the other end. Therefore, the second connecting member 320 is far away from the comb teeth 130 end, and the first connecting member 230 is close to the comb teeth 130 end. In the case of vibration of the comb tooth plate 100, the first connecting member 230 is more likely to adapt to the vibration of the comb tooth plate 100, and the second connecting member 320 is not easily pulled by the comb tooth plate 100, which will not affect the stability of the connection between the second connecting member 320 and the comb tooth plate 100.

[0034] In some embodiments of the present application, a stopper base 400 is further included. The stopper base 400 is used to be fixed to the beam body and is located on a side of the comb plate 100 close to the beam body. The stopper base 400 has an installation stopper 410. The end of the comb plate 100 away from its comb teeth 130 is located in the installation stopper 410. Figure 1 to Figure 2 , Figures 4 to 9 shown.

[0035] The first sleeve 210 and the second sleeve 310 are both located on the side of the stopper base 400 away from the comb plate 100, and are fixedly connected to the stopper base 400. The stopper base 400 also has a third threaded hole 420 for the first connecting member 230 to pass through and a fourth threaded hole 430 for the second connecting member 320 to pass through. The stopper base 400 is arranged below the comb plate 100 and above the first sleeve 210 and the second sleeve 310, and is fixed to the beam body, thereby improving the stability of the fixation of the comb plate 100 to the beam body, and the stopper base 400 can prevent the bolts from being subjected to radial force, further preventing the bolts from loosening relative to the comb plate 100.

[0036] When the elastomer 220 is in a compressed state, the elastic force generated by the compression of the elastomer 220 acts on the stop base 400, so that the stop base 400 and the comb plate 100 are tightly fixed, thereby avoiding positional displacement between the stop base 400 and the comb plate 100, and further preventing the bolts from loosening due to radial force.

[0037] In some embodiments of the present application, the installation structure of the comb plate 100 further includes an anchor bar 500, which is used to be anchored in the beam body to improve the anchoring strength between the telescopic device and the beam body concrete, and to avoid the situation where the telescopic device is damaged due to insufficient anchoring strength with the beam body concrete. The anchor bar 500 can be fixed to at least one of the stop base 400, the first sleeve 210, and the second sleeve 310. The anchor bar 500 can be fixed to the stop base 400 alone, or to the first sleeve 210 or the second sleeve 310 alone, which can be determined specifically according to the installation conditions and the installation environment.

[0038] In some embodiments, reference Figure 1 and Figure 2 As shown, one end of the anchor bar 500 is fixed to the end surface of the comb teeth 130 of the stopper base 400 away from the comb plate 100, and the other end is fixed to the surface of the stopper base 400 away from the comb plate 100. Under such a layout, the contact area between the anchor bar 500 and the stopper base 400 is large, and the stability of the fixing structure with the stopper base 400 is strong. Furthermore, while the anchor bar 500 is fixed to the stopper base 400, it can also be fixed to the first sleeve 210 or the second sleeve 310 close to the anchor bar 500, thereby improving the stability of the fixing of the overall installation structure of the comb plate 100 to the beam body.

[0039] In other embodiments, the number of anchor bars 500 is at least two, and the two anchor bars 500 are located on opposite sides of the first sleeve 210 or the second sleeve 310 to cooperate with the first sleeve 210 or the second sleeve 310. Figure 1 and Figure 2 As shown. The anchor bar 500 not only enhances the anchoring strength between the telescopic device and the beam body, but also limits the first sleeve 210 or the second sleeve 310 to prevent the connection between the first sleeve 210 or the second sleeve 310 and the beam body from loosening, further improving the stability of the comb plate 100 installation structure and the beam body. The opposite sides of the first sleeve 210 or the second sleeve 310 refer to the two ends of the sleeve in the radial direction, and the two anchor bars 500 are arranged along the radial direction of the sleeve.

[0040] In some preferred embodiments, the anchor bars 500 are fixed to the stop base 400 and distributed on both sides of the first sleeve 210 or the second sleeve 310 .

[0041] In order to improve the installation stability of the comb plate 100, a plurality of first threaded holes 110 and second threaded holes 120 are provided on the comb plate 100, and the plurality of first threaded holes 110 and the plurality of second threaded holes 120 are arranged in sequence and spaced apart along the arrangement direction of the comb teeth 130 of the comb plate 100, and each first threaded hole 110 is threadedly connected with a first connecting member 230, and each first connecting member 230 is correspondingly provided with a first sleeve 210 and an elastomer 220, and each second threaded hole 120 is threadedly connected with a second connecting member 320, and each second connecting member 320 is correspondingly provided with a second sleeve 310.

[0042] The present application also provides a prestressed anti-loosening environmentally friendly assembly telescopic device, referring to Fig.10 As shown, it includes the comb plate 100 installation structure provided by any of the above embodiments. Two comb plates 100 are provided, and the comb teeth 130 of the two comb plates 100 are arranged opposite to each other and mesh with each other. The two comb plates 100 are respectively located on both sides of the expansion joint of the beam body, and a water stop assembly 600 is also provided between the two comb plates 100 installation structures.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A comb plate mounting structure, characterized in that: include: A comb plate (100), wherein the comb plate (100) has a first threaded hole (110); A first sleeve (210), the first sleeve (210) being used for being pre-buried in the beam body, and a receiving groove (211) being provided on a surface of the first sleeve (210) close to the comb plate (100); an elastic body (220), the elastic body (220) being installed in the containing groove (211), and the elastic body (220) being provided with a mounting hole (221); A first connecting member (230), wherein the first connecting member (230) passes through the first threaded hole (110) and the mounting hole (221), and is threadedly connected to the first threaded hole (110); the elastic body (220) is configured to be in a compressed state under the pre-tightening action of the first connecting member (230).

2. A comb plate installation structure according to claim 1, characterized in that: It also includes a second sleeve (310) and a second connecting member (320); The comb plate (100) is provided with a second threaded hole (120); The second sleeve (310) is used for being embedded in the beam body, and a thread groove (311) is provided on the surface of the second sleeve (310) close to the comb plate (100), and the second connecting member (320) is threadedly arranged in the second threaded hole (120) and the thread groove (311).

3. A comb plate installation structure according to claim 2, characterized in that: The second connecting member (320) is located on a side of the first connecting member (230) away from the comb teeth (130) of the comb tooth plate (100).

4. A comb plate installation structure according to claim 2, characterized in that: It also comprises a stopper base (400), the stopper base (400) being used for fixing to the beam body and being installed on a side of the comb plate (100) close to the beam body, the stopper base (400) having an installation stopper (410), and an end of the comb plate (100) away from its comb teeth (130) being located in the installation stopper (410); The first sleeve (210) and the second sleeve (310) are both fixed to the side of the stop base (400) facing away from the comb plate (100), and the stop base (400) also has a third threaded hole (420) for the first connecting member (230) to pass through and a fourth threaded hole (430) for the second connecting member (320) to pass through.

5. A comb plate installation structure according to claim 4, characterized in that: It also includes an anchor bar (500) for anchoring in the beam body, and the anchor bar (500) is fixed to at least one of the stop base (400), the first sleeve (210), and the second sleeve (310).

6. A comb plate installation structure according to claim 5, characterized in that: One end of the anchor bar (500) is fixed to the end surface of the comb teeth (130) of the stop base (400) away from the comb plate (100), and the other end is fixed to the surface of the stop base (400) away from the comb plate (100); And / or, there are at least two anchor bars (500), and the two anchor bars (500) are located on opposite sides of the first sleeve (210) or the second sleeve (310) to cooperate with the first sleeve (210) or the second sleeve (310) in a limiting manner.

7. A comb plate installation structure according to claim 1, characterized in that: The inner wall of the mounting hole (221) is provided with threads, and the first connecting member (230) is threadedly connected to the mounting hole (221); Alternatively, the mounting structure further comprises a nut (240), the first connecting member (230) being a screw rod, the head of the first connecting member (230) being located in the accommodating groove (211), the rod of the first connecting member (230) passing through the mounting hole (221), the first threaded hole (110) and the nut (240) in sequence, and the first connecting member (230) being threadedly connected to the nut (240), and the nut (240) being tightly arranged against the comb plate (100) so that the elastomer (220) is in a compressed state.

8. A comb plate installation structure according to claim 7, characterized in that: The comb plate (100) is provided with a countersunk hole (140), and the nut (240) is located in the countersunk hole (140).

9. A comb plate installation structure according to claim 2, characterized in that: A plurality of the first threaded holes (110) and a plurality of the second threaded holes (120) are provided, and the plurality of the first threaded holes (110) and the plurality of the second threaded holes (120) are arranged in sequence and spaced apart along the arrangement direction of the comb teeth (130) of the comb plate (100), and each of the first threaded holes (110) is threadedly connected to a first connecting member (230), and each of the second threaded holes (120) is threadedly connected to a second connecting member (320).

10. A prestressed anti-loosening environmentally friendly assembly telescopic device, characterized in that: It comprises the comb plate mounting structure as described in any one of claims 1-9.

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