CN209760011U - Large-displacement highway bridge expansion device - Google Patents

Abstract

The utility model discloses a big displacement public road bridge roof beam telescoping device, one side of the bearing plate A of flexible subassembly and bearing plate B is equipped with the spacing portion of protrusion along its length direction interval, be spacing recess between two adjacent spacing portions of protrusion, in the spacing portion of protrusion on the bearing plate A inserted the spacing recess on the bearing plate B and the spacing portion of protrusion on the bearing plate B inserted the spacing recess on the bearing plate A, the tip of spacing recess is equipped with spring A and spring A's tip fixed connection to the spacing portion of protrusion, the both sides of bearing plate A's the spacing portion of protrusion all opened along its length direction has spacing spout, and the both sides of the spacing portion of protrusion on the bearing plate B are equipped with spacing post, and spacing post and spacing spout sliding connection in the spacing spout was inserted to spacing post, and a flexible loop bar of stiffener fixedly connected with is passed through in the outside of bearing plate A and bearing plate B. The utility model discloses make the junction stability of telescoping device stronger.

Description

Large-displacement highway bridge expansion device

Technical Field

The utility model relates to a road and bridge technical field specifically is a big displacement public road bridge roof beam telescoping device.

Background

China has large investment scale in the field of highway construction, and bridge engineering is numerous. The expansion device used on the bridge, in particular to the expansion device with large displacement used by a super bridge such as a long-span continuous beam, a cable-stayed bridge, a suspension bridge and the like, is an important part of the bridge, and once the expansion device is damaged, the traffic is seriously influenced, and the loss is heavy. At present, most of the expansion devices used on bridges adopt a polymer spring block and a chain to control the displacement of a middle profile material so as to ensure that each gap of the expansion device is changed. The small displacement telescoping device adopts the above structure problem not much, but to the great telescoping device of displacement volume, there is the inhomogeneous problem of gap change in the product at present, and the gap change is inhomogeneous again has caused the vehicle to be in the great gap department through the telescoping device, and the vehicle "jumps" seriously to will guarantee the stability, the connectivity of junction in big displacement telescoping device department.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the prior art not enough, provide a big displacement public road bridge roof beam telescoping device now, solved the problem that current telescoping device can not guarantee the stability and the connectivity of junction.

(II) technical scheme

The utility model discloses a following technical scheme realizes:

A large-displacement highway bridge expansion device comprises an expansion assembly, wherein the expansion assembly comprises a bearing plate A, a bearing plate B, a convex limiting part, a limiting groove, a spring A, a limiting sliding groove and a limiting column, the convex limiting parts are arranged on one side of the bearing plate A and one side of the bearing plate B along the length direction at intervals, the limiting groove is arranged between two adjacent convex limiting parts, the convex limiting part on the bearing plate A is inserted into the limiting groove on the bearing plate B, the convex limiting part on the bearing plate B is inserted into the limiting groove on the bearing plate A, the end part of the limiting groove is provided with the spring A, the end part of the spring A is fixedly connected to the end part of the convex limiting part, the two sides of the convex limiting part of the bearing plate A are provided with the limiting sliding grooves along the length direction, the two sides of the convex limiting part on the bearing plate B are provided with the limiting column, the limiting column is inserted into the limiting sliding groove and is connected with the limiting sliding groove in a sliding mode, the outer sides of the bearing plate A and the bearing plate B are respectively provided with a reinforcing rod, and a telescopic loop bar is fixedly connected between the end portions of the reinforcing rods.

Preferably, the telescopic loop bar comprises an inner bar A, an inner bar B, an outer bar and a spring B, wherein one end of the inner bar A and one end of the inner bar B are fixedly connected to the reinforcing bar, the other end of the inner bar A and the other end of the inner bar B are sleeved in the outer bar, the spring B is fixedly connected between the inner bar A and the inner bar B, and the inner bar A and the inner bar B are connected with the outer bar in a sliding mode.

Preferably, the friction coefficient between the outer walls of the inner rod A and the inner rod B and the inner wall of the outer rod is greater than 1.

Preferably, the inner rod A, the inner rod B and the outer rod are all made of metal rods.

Preferably, the low side of bearing plate A and bearing plate B is equipped with a supporting beam, the both sides of bearing plate A and bearing plate B are equipped with a plurality of hangers A along its length direction, it is equipped with a plurality of hangers B along its direction of height to prop up supporting beam, bearing plate A's hanger A with fixedly connected with elastic rope between the hanger B on the supporting beam of bearing plate B bottom, bearing plate B's hanger A with fixedly connected with elastic rope between the hanger B on the supporting beam of bearing plate A bottom.

Preferably, the bearing plate A and the bearing plate B are both coated with wear-resistant coatings.

(III) advantageous effects

compared with the prior art, the beneficial effects of the utility model are as follows:

The utility model is provided with a telescopic component which comprises a bearing plate A and a bearing plate B, wherein the convex limit part on the bearing plate A is inserted into the limit groove on the bearing plate B, the convex limit part on the bearing plate B is inserted into the limit groove on the bearing plate A, the end part of the limit groove 4 is provided with the spring A, the end part of the spring A is fixedly connected to the end part of the convex limit part 3, thus forming a comb structure, when the bearing plate A and the bearing plate B expand with heat and contract with cold, the spring A can move along the length square of the limit groove, the convex limit parts on the bearing plate A and the bearing plate B are mutually clamped to form a mortise-tenon structure, the connectivity between the bearing plate A and the bearing plate B is enhanced, the exercise between the bearing plate A and the bearing plate B caused by overlarge displacement is avoided, in addition, the convex limit part on the bearing plate A is provided with a limit chute, be equipped with spacing post on the spacing portion of protrusion on the bearing plate B, spacing spout and spacing post sliding connection, satisfy flexible demand on the one hand, avoid the displacement volume too big on the one hand, be equipped with flexible loop bar on bearing plate A and bearing plate B in addition, satisfy flexible needs, be equipped with hangers A on bearing plate A and the bearing plate B, be equipped with hangers B on a supporting beam, be equipped with the elasticity rope between hangers A and the hangers B, and elasticity rope cross arrangement, also be for the connectivity of strengthening between bearing plate A and the bearing plate B.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view of the present invention;

FIG. 3 is a schematic structural view of the telescopic rod of the present invention;

Fig. 4 is a schematic view of a partial structure of the present invention.

In the figure: 1. a bearing plate A; 2. a bearing plate B; 3. a protruding limit part; 4. a limiting groove; 5. a limiting column; 6. a spring A; 7. a limiting chute; 8. a reinforcing bar; 9. an inner rod A; 10. An inner rod B; 11. an outer rod; 12. a spring B; 13. a support beam; 14. a suspension loop A; 15. a hanging lug B; 16. an elastic cord; 17. a telescopic loop bar; 18. a telescoping assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

As shown in fig. 1-3, the large displacement telescopic device for highway bridges comprises a telescopic assembly 18, wherein the telescopic assembly 18 comprises a bearing plate a1, a bearing plate B2, protruding limiting parts 3, limiting grooves 4, a spring a6, limiting sliding grooves 7 and limiting columns 5, the protruding limiting parts 3 are arranged on one side of the bearing plate a1 and one side of the bearing plate B2 at intervals along the length direction of the bearing plate, the limiting grooves 4 are arranged between two adjacent protruding limiting parts 3, the protruding limiting parts 3 on the bearing plate a1 are inserted into the limiting grooves 4 on the bearing plate B2, the protruding limiting parts 3 on the bearing plate B2 are inserted into the limiting grooves 4 on the bearing plate a, the springs a6 are arranged at the end parts of the limiting grooves 4, the end parts of the springs a6 are fixedly connected to the end parts of the protruding limiting parts 3, the limiting sliding grooves 7 are arranged on both sides of the protruding limiting parts 3 of the bearing plate a1 along the length direction, the both sides of the spacing portion 3 of protrusion on the bearing plate B2 are equipped with spacing post 5, spacing post 5 inserts in the spacing spout 7 just spacing post 5 with spacing spout 7 sliding connection, the outside of bearing plate A1 and bearing plate B2 all is equipped with a stiffener 8, a flexible loop bar 17 of fixedly connected with between the tip of stiffener 8.

In this embodiment, telescopic loop bar 17 includes interior pole a9, interior pole B10, outer pole 11 and spring B12, wherein one end fixed connection of interior pole a9 and interior pole B10 is in the stiffener 8, the other end cover of interior pole a9 and interior pole B10 is established in outer pole 11 just fixedly connected with spring B12 between interior pole a9 and the interior pole B10, interior pole a9 with interior pole B10 and outer pole 11 sliding connection. Therefore, when the bearing plate A and the bearing plate 2 are displaced due to expansion caused by heat and contraction caused by cold, the telescopic sleeve rod can be stretched according to the stretching of the bearing plate A and the bearing plate B2.

In the present embodiment, the friction coefficient between the outer walls of the inner lever a9 and the inner lever B10 and the inner wall of the outer lever 11 is greater than 1. Slowing down its sliding speed.

In the present embodiment, the inner lever a9, the inner lever B10, and the outer lever 11 are all made of metal rods. The connectivity between the bearing plate A1 and the bearing plate B2 is strengthened.

In this embodiment, the bottom ends of the bearing plate a1 and the bearing plate B2 are provided with a support beam 13, two sides of the bearing plate a1 and the bearing plate B2 are provided with a plurality of hangers a14 along the length direction thereof, the support beam 13 is provided with a plurality of hangers B15 along the height direction thereof, an elastic rope 16 is fixedly connected between the hanger a14 of the bearing plate a1 and the hanger B15 on the support beam 13 at the bottom of the bearing plate B2, and an elastic rope 16 is fixedly connected between the hanger a14 of the bearing plate B2 and the hanger B15 on the support beam 13 at the bottom of the bearing plate a 1. The hanger A14, the hanger B15 and the elastic rope 16 are used for enhancing the connection between the bearing plate A1 and the bearing plate B2, and the connection between the bearing plate A1 and the bearing plate B2 is prevented from being broken.

in this embodiment, the bearing plate a1 and the bearing plate B2 are coated with wear-resistant coatings, which reduces the wear efficiency.

In fig. 1-3, the utility model provides a telescopic assembly, telescopic assembly includes bearing plate a1 and bearing plate B2, protruding spacing portion 3 on bearing plate a1 inserts in spacing recess 4 on bearing plate B2 and protruding spacing portion 3 on bearing plate B2 inserts in spacing recess 4 on bearing plate a, the tip of spacing recess 4 is equipped with spring A6 and the tip of spring A6 is fixedly connected to the tip of protruding spacing portion 3, constitutes a broach structure like this, when bearing plate a1 and bearing plate B2 expand with heat and contract with cold, can remove along the length direction of spacing recess 4, and protruding spacing portion 3 on bearing plate a1 and bearing plate B2 mutually blocks, constitutes a tenon fourth of twelve earthly branches structure, strengthens the connectivity between bearing plate a1 and bearing plate B2, avoids causing because too big and fracture between the two, in addition, a protruding limit part 3 on a bearing plate A1 is provided with a limit sliding groove 7, a limit column 5 is arranged on the protruding limit part 3 on a bearing plate B2, the limit sliding groove 7 is in sliding connection with the limit column 5, on one hand, the telescopic requirement is met, on the other hand, the overlarge displacement is avoided, on the other hand, a telescopic loop bar 17 is arranged on the bearing plate A1 and the bearing plate B2, the telescopic requirement is met, hanging lugs A14 are arranged on the bearing plate A1 and the bearing plate B2, hanging lugs B15 are arranged on the support beam 13, an elastic rope 16 is arranged between the hanging lugs A14 and the hanging lugs B15, the elastic rope 16 is arranged in a crossed mode, and the connection between the bearing plate A1 and the bearing plate B2 is.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.

Claims (6)

1. A large displacement highway bridge telescoping device, includes telescopic component (18), its characterized in that: the telescopic component (18) comprises a bearing plate A (1), a bearing plate B (2), protruding limiting parts (3), limiting grooves (4), a spring A (6), limiting sliding grooves (7) and limiting columns (5), wherein the protruding limiting parts (3) are arranged on one side of the bearing plate A (1) and one side of the bearing plate B (2) at intervals along the length direction of the bearing plate A, the limiting grooves (4) are arranged between two adjacent protruding limiting parts (3), the protruding limiting parts (3) on the bearing plate A (1) are inserted into the limiting grooves (4) on the bearing plate B (2), the protruding limiting parts (3) on the bearing plate B (2) are inserted into the limiting grooves (4) on the bearing plate A, the springs A (6) are arranged at the end parts of the limiting grooves (4), and the end parts of the springs A (6) are fixedly connected to the end parts of the protruding limiting parts (3), the both sides of the spacing portion of protrusion (3) of bearing plate A (1) all are opened along its length direction and are had spacing spout (7), the both sides of the spacing portion of protrusion (3) on bearing plate B (2) are equipped with spacing post (5), insert in spacing post (5) just in spacing spout (7) spacing post (5) with spacing spout (7) sliding connection, the outside of bearing plate A (1) and bearing plate B (2) all is equipped with a stiffener (8), fixedly connected with telescopic sleeve pole (17) between the tip of stiffener (8).

2. The large displacement road bridge expansion device of claim 1, wherein: telescopic loop bar (17) are including interior pole A (9), interior pole B (10), outer pole (11) and spring B (12), wherein one end fixed connection of interior pole A (9) and interior pole B (10) is in stiffener (8), the other end cover of interior pole A (9) and interior pole B (10) is established in outer pole (11) just fixedly connected with spring B (12) between interior pole A (9) and interior pole B (10), interior pole A (9) with interior pole B (10) and outer pole (11) sliding connection.

3. The large displacement road bridge expansion device of claim 2, wherein: and the friction coefficient between the outer walls of the inner rod A (9) and the inner rod B (10) and the inner wall of the outer rod (11) is greater than 1.

4. The large displacement road bridge expansion device of claim 2, wherein: the inner rod A (9), the inner rod B (10) and the outer rod (11) are all made of metal rods.

5. The large displacement road bridge expansion device of claim 1, wherein: the bottom of bearing plate A (1) and bearing plate B (2) is equipped with a supporting beam (13), the both sides of bearing plate A (1) and bearing plate B (2) are equipped with a plurality of hangers A (14) along its length direction, it is equipped with a plurality of hangers B (15) along its direction of height to prop up supporting beam (13), the hangers A (14) of bearing plate A (1) with fixedly connected with elastic rope (16) between hangers B (15) on bearing plate B (2) bottom sprag beam (13), the hangers A (14) of bearing plate B (2) with fixedly connected with elastic rope (16) between hangers B (15) on bearing plate A (1) bottom sprag beam (13).

6. The large displacement road bridge expansion device of claim 1, wherein: and wear-resistant coatings are coated on the bearing plate A (1) and the bearing plate B (2).