CN217104698U

CN217104698U - Bridge expansion piece fastening device

Info

Publication number: CN217104698U
Application number: CN202220361800.6U
Authority: CN
Inventors: 李嘉璐; 郑伟; 王子琰; 茅卫生; 陶戴邦; 庞敏; 黄岚; 王璐瑶; 陈妍希
Original assignee: Shanghai Urban Construction Materials Co ltd
Current assignee: Shanghai Urban Construction Materials Co ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-08-02
Anticipated expiration: 2032-02-22

Abstract

The utility model relates to a bridge extensible member fastener, including the stop block, the stop block has two at least faces, wherein one side and a side laminating of bolt head, another side and the laminating of prefabricated groove cell wall. Above-mentioned bridge extensible member fastener sets up the stop block into two at least faces, and one side and the laminating of a side of bolt head, and the laminating of another side and prefabricated groove cell wall for spacing the bolt, make the stop block directly restrict the vice relative rotation of screw thread, neither can destroy the screw thread pair, further restrict the not hard up possibility of bolt with the physical mode again, can realize quick installation, the purpose of leading to the traffic fast.

Description

Bridge expansion piece fastening device

Technical Field

The utility model relates to a bridge fastener field especially relates to a bridge extensible member fastener.

Background

The expansion device is one of important functional components of highways and bridge engineering, and in order to meet the requirement of deformation of bridge bodies, the bridge expansion device is generally arranged between two beam ends of a bridge, between the beam ends and a bridge abutment or on the hinged position of the bridge. The bridge expansion device is an important component of a bridge, and the performance of the expansion device directly influences the driving safety and the smoothness of a bridge road. A common expansion device in bridge engineering is a comb plate expansion device, which mainly consists of a movable comb plate and a fixed comb plate, wherein the fixed comb plate is connected with a bridge floor at one section of a bridge by a connecting bolt, and the movable comb plate is anchored on the bridge floor at the other end by a bolt.

Along with increase and the heavy-duty vehicle's of highway, bridge operation year increase, the damage of not equidimension appears in succession in many fishback expansion joints, and the destruction form is most common with fishback department bolt nut not hard up condition, and when adopting conventional maintenance technology, the disease is reprocessed the rate and is higher. If the loosening defect of the comb plate cannot be repaired effectively in time, the steel plate is warped, deformed and lost, and great potential traffic safety hazards are brought.

The bolt is a tool for fastening the parts of the object step by utilizing the physics and mathematical principles of the inclined plane circular rotation and the friction force of the object, and is a common fastener. The structure of the screw is generally composed of a head, a screw rod formed by extending downwards from the bottom surface of the head, and a screw thread formed on the outer edge of the screw rod. General ordinary bolt all adopts ordinary sawtooth pattern screw thread, and tooth height, tooth thickness and contained angle intensity all can not adapt to the vibrations that the fishback constantly rolled and lead to, cause often to overhaul fastening and change. And the common bolt is easy to damage due to the poor strength of the sawtooth thread, and the gasket is an assembly part, so that the common bolt has the disadvantages of serious vibration loosening, high replacement rate, high labor intensity, increased cost and increased unsafe factors.

The traditional fastening device for the bridge expansion piece only utilizes the self-locking principle of threads or increases the friction force of relative rotation of a thread pair to realize looseness prevention, and the traditional fastening device for the bridge expansion piece is used in a comb-tooth plate structure and cannot fundamentally solve the problem of nut looseness.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a bridge expansion piece fastening device which can not damage the thread pair and can solve the problem of loosening of bolts and nuts at the comb plate in order to solve the technical problems.

The utility model provides a bridge extensible member fastener, includes the stop block, the stop block has two at least faces, and wherein one side is laminated with a side of bolt head, and the another side is laminated with the prefabricated groove cell wall.

Furthermore, a plurality of surfaces on the stop block are respectively attached to a plurality of side surfaces of the bolt head.

Furthermore, a plurality of pasting plates are arranged on the bottom surface of the stop block, and the pasting plates are arranged at intervals.

Furthermore, the arrangement direction of the pasting board coincides with one diameter of the prefabricated groove.

Furthermore, the section of the pasting board is in an inverted trapezoid shape.

Furthermore, a rubber layer is arranged on the bottom surface of the pasting board.

Furthermore, a positioning rod is fixed on the bottom surface of the stop block and is inserted into a positioning groove preset at the bottom of the prefabricated groove.

Furthermore, a gap is reserved between the bottom end of the positioning rod and the bottom of the positioning groove.

Above-mentioned bridge extensible member fastener sets up the stop block into two at least faces, and one side and the laminating of a side of bolt head, and the laminating of another side and prefabricated groove cell wall for spacing the bolt, make the stop block directly restrict the vice relative rotation of screw thread, neither can destroy the screw thread pair, further restrict the not hard up possibility of bolt with the physical mode again, can realize quick installation, the purpose of leading to the traffic fast.

Drawings

FIG. 1 is a schematic view of a first embodiment of a fastening device;

FIG. 2 is a schematic view of a second embodiment of a fastening device;

FIG. 3 is a schematic cross-sectional view of a fastening device according to a third embodiment;

fig. 4 is a side view of a fastening device of a third embodiment.

In the figure: 10. pre-groove preparation; 20. a bolt; 100. a stopper block; 110. pasting a board; 120. positioning a rod; 130. a rubber layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In one embodiment, as shown in fig. 1, a bridge expansion piece fastening device comprises a stop block 100, wherein the stop block 100 has at least two surfaces, one surface of which is attached to one side surface of the head of a bolt 20, and the other surface of which is attached to the groove wall of a prefabricated groove 10.

Above-mentioned bridge extensible member fastener sets up stop block 100 to two at least faces, and one side and the laminating of a side of bolt 20 head, and the laminating of another side and prefabricated groove 10 cell wall for carry on spacingly to bolt 20, make stop block 100 directly restrict the vice relative rotation of screw thread, neither can destroy the screw thread pair, further restrict the not hard up possibility of bolt 20 with the physical mode again, can realize quick installation, the purpose of leading to the car fast.

As shown in fig. 2, in the present embodiment, a plurality of surfaces of the stopper 100 are respectively abutted against a plurality of side surfaces of the head of the bolt 20.

As shown in fig. 3 and 4, in one embodiment, a plurality of adjacent plates 110 are disposed on a bottom surface of the stopper 100, and the adjacent plates 110 are spaced apart from each other. The contact surface between the adjacent plate 110 and the pre-groove 10 is increased, and the friction between the adjacent plate and the pre-groove is increased.

In this embodiment the direction of the placement of the pasting board 110 coincides with a diameter of the pregroove 10. When the bolt 20 is forced to rotate, the direction of the rotation is opposite to the friction between the adjacent flitch 110 and the pregroove 10, and the grip is stronger.

In this embodiment, the cross-section of the adjacent board 110 is an inverted trapezoid.

In this embodiment, the rubber layer 130 is disposed on the bottom surface of the pasting board 110. Further increasing grip.

In this embodiment, a positioning rod 120 is fixed to a bottom surface of the stopper 100, and the positioning rod 120 is inserted into a positioning groove provided at the bottom of the pre-groove 10. To prevent excessive force from causing the bolt 20 to deflect the retainer.

In the present embodiment, a space is left between the bottom end of the positioning rod 120 and the bottom of the positioning groove. Preventing the bottom surface of the stop block 100 or the abutment plate 110 from not completely abutting the bottom of the pregroove 10.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The bridge expansion piece fastening device is characterized by comprising a stop block, wherein the stop block is provided with at least two surfaces, one surface of the stop block is attached to one side surface of a bolt head, and the other surface of the stop block is attached to the wall of a prefabricated groove.

2. The bridge expansion fastener of claim 1, wherein the stop block has a plurality of surfaces that engage a plurality of sides of the bolt head.

3. The bridge expansion fastening device of claim 2, wherein the bottom surface of the stop block is provided with a plurality of adjacent plates, and the adjacent plates are spaced apart from each other.

4. A bridge expansion joint fastening device according to claim 3, wherein the direction of arrangement of the abutment plate coincides with a diameter of the pre-groove.

5. The bridge expansion fastener of claim 4, wherein said facing plates are inverted trapezoidal in cross-section.

6. The bridge expansion fastener of claim 5, wherein the bottom surface of the facing plate is provided with a rubber layer.

7. The bridge expansion piece fastening device according to claim 2, wherein a positioning rod is fixed to a bottom surface of the stop block, and the positioning rod is inserted into a positioning groove preset at the bottom of the prefabricated groove.

8. The bridge expansion fastener of claim 7, wherein the bottom end of the positioning rod is spaced from the bottom of the positioning slot.