CN212834994U

CN212834994U - Device for preventing pin from backing for assembled bridge

Info

Publication number: CN212834994U
Application number: CN202020858631.8U
Authority: CN
Inventors: 汪乐晨; 李枝茂; 胡月明; 彭帅; 伏浩浩
Original assignee: Zhejiang Xingtu Bridge Special Equipment Manufacturing Co ltd
Current assignee: Zhejiang Xingtu Bridge Special Equipment Manufacturing Co ltd
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2021-03-30
Anticipated expiration: 2030-05-21

Abstract

A device that is used for preventing round pin spare of assembled bridge to roll back, including the linking arm, linking arm one end is equipped with the crotch, the other end and the base of linking arm rotate and link to each other, the linking arm is at least two, the crotch has set firmly solid fixed ring, adopts the spring to link to each other between two solid fixed rings, and two linking arms rotate with the base respectively and link to each other, the base is equipped with a screw hole, a threaded hole female connection bolt, linking arm and bailey frame keep fixed setting, twist thereby the bolt supports tight round pin spare stopping round pin spare.

Description

Device for preventing pin from backing for assembled bridge

Technical Field

The utility model relates to an assembled bridge technical field especially relates to a device that is used for preventing that round pin spare of assembled bridge from returning.

Background

The assembled bridge girder mainly comprises a Bailey girder which is formed by connecting a plurality of Bailey frames, and adjacent Bailey frames are connected by pin pieces. However, due to the large bridge load, when a vehicle runs on a bridge, the bridge deck is affected by various factors such as downwarping and heeling force, so that the safety pin of the pin piece is sheared, the cut piece may fall off, and finally, the bridge girder is disconnected, and the bridge collapses.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that, the not enough device that prevents that the round pin spare that is used for assembled bridge to roll back that provides of solving prior art existence.

The utility model adopts the technical proposal that: a device that is used for preventing round pin spare of assembled bridge to roll back, including the linking arm, linking arm one end is equipped with the crotch, the other end and the base of linking arm rotate and link to each other, the linking arm is at least two, the crotch has set firmly solid fixed ring, adopts the spring to link to each other between two solid fixed rings, and two linking arms rotate with the base respectively and link to each other, the base is equipped with a screw hole, a threaded hole female connection bolt, linking arm and bailey frame keep fixed setting, twist thereby the bolt supports tight round pin spare stopping round pin spare.

The utility model discloses still include the nut that links to each other with the bolt screw thread, the nut is located between bolt and the base, bolt and nut threaded connection.

The upper and lower both ends of base are equipped with the convex body, the one end that the linking arm is close to the base is equipped with the vacancy that allows the convex body to put into, the vacancy is located to the convex body, the convex body is equipped with first cotter hole, every linking arm is equipped with two second cotter holes that correspond with first cotter hole, thereby first cotter hole links to each other base and linking arm through pin and safety pin with the second cotter hole.

The assembled bridge comprises a bailey truss, the bailey truss comprises a cross beam, the cross beam is composed of channel steel, and a hook on the connecting arm is hooked with the channel steel firmly.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model discloses compare safety pin stopping structure, the atress intensity high stability is better, can prevent that the round pin spare from returning, ensures that the bridge that the round pin spare is connected is firm reliable.

Drawings

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

Fig. 2 is a schematic structural view of the present invention combined with a bailey frame.

Fig. 3 is a partial enlarged view at a.

Detailed Description

The invention will be further explained by the embodiments with reference to the drawings.

As shown in fig. 1 to 3, the device for preventing pin member from moving back for an assembled bridge according to the present embodiment includes a connecting arm 1, a hook 11 is disposed at one end of the connecting arm 1, the other end of the connecting arm 1 is rotatably connected to a base 2, the connecting arm 1 includes at least two connecting arms, the hook 11 is fixedly provided with fixing rings 111, the two fixing rings 111 are connected to each other by a spring 9, the two connecting arms 1 are respectively rotatably connected to the base 2, the base 2 is provided with a threaded hole, a bolt 3 is screwed into the threaded hole, the connecting arm 1 and a bailey bracket 8 are fixedly disposed, and the bolt 3 is screwed to abut against a pin member 4, thereby preventing the pin member 4 from moving back. This embodiment spring 9's effect prevents that crotch 11 is not hard up by the elasticity of spring, thereby supports tightly round pin piece 4 through screwing bolt 3 and can prevent the normal operating of guaranteeing the bridge that drops of round pin piece 4, compares the structure that adopts the safety pin stopping, and intensity is better.

The embodiment further comprises a nut 5 in threaded connection with the bolt 3, the nut 5 is arranged between the bolt 3 and the base 2, and the bolt 3 is in threaded connection with the nut 5. The effect of nut appears becoming flexible when preventing that bolt 3 and base 2 from being connected in this embodiment, during concrete implementation, moves bolt 3 and supports tight round pin spare 4 earlier, then moves nut 5 and supports tight base 2 screwing in to the realization is to the tight fixed position of bolt 3.

This embodiment the upper and lower both ends of base 2 are equipped with convex body 21, the one end that linking arm 1 is close to base 2 is equipped with the vacancy 12 that allows convex body 21 to put into, vacancy 12 is located to convex body 21, convex body 21 is equipped with first cotter hole, every linking arm 1 is equipped with two second cotter holes that correspond with first cotter hole, thereby first cotter hole links to each other base 2 and linking arm 1 through pin 6 and safety pin 7 with the second cotter hole. The present embodiment connects the base 2 and the connecting arm 1 through the pin 6 and the safety pin 7, so as to realize the rotation connection of the connecting arm 1 and the base 2.

This embodiment assembled bridge includes bailey frame 8, and bailey frame 8 includes crossbeam 81, crossbeam 81 adopts the channel-section steel to constitute, 11 hook firm channel-sections of crotch on the linking arm 1. The hooks 11 hook over the wide part of the legs of the channel and thus remain firmly attached.

The device for preventing the pin piece from returning for the assembled bridge in the embodiment specifically comprises the following use steps of firstly, rotatably connecting two connecting arms 1 and a base 2 with a safety pin 7 through a pin 6, opening the connecting arms 1 to allow two cross beams 8 to be placed into the angle inside the two connecting arms 1, then placing the device at the position of a pin piece 4 required to be abutted, respectively placing the two connecting arms 1 on the upper side and the lower side of the cross beam 8, respectively pressing the two connecting arms 1 towards the middle until hooks 11 of the two connecting arms 1 catch on leg wide parts of the cross beam 8, connecting springs 9 at fixing rings 111 of the hooks 11, screwing bolts 3 until the bolts 3 abut against the pin piece 4, and then screwing nuts 5 to lock the bolts 3.

Claims

1. A device that is used for preventing round pin spare of assembled bridge to roll back, characterized by, including linking arm (1), linking arm (1) one end is equipped with crotch (11), the other end and base (2) of linking arm (1) rotate continuously, linking arm (1) are at least two, crotch (11) have set firmly solid fixed ring (111), adopt spring (9) to link to each other between two solid fixed ring (111), and two linking arms (1) rotate with base (2) respectively and link to each other, base (2) are equipped with a screw hole, screw hole female connection bolt (3), linking arm (1) and bailey frame (8) keep fixed setting, twist and move thereby bolt (3) support tight round pin spare (4) stopping round pin spare (4).

2. The device for preventing the pin member from being retreated for an assembled bridge according to claim 1, further comprising a nut (5) threadedly coupled to the bolt (3), wherein the nut (5) is provided between the bolt (3) and the base (2).

3. The device for preventing the pin member from withdrawing of the fabricated bridge as set forth in claim 1, wherein the upper and lower ends of the base (2) are provided with protrusions (21), one end of the connecting arm (1) near the base (2) is provided with a vacant site (12) allowing the protrusion (21) to be placed therein, the protrusion (21) is provided in the vacant site (12), the protrusion (21) is provided with a first pin hole, each connecting arm (1) is provided with two second pin holes corresponding to the first pin hole, and the first pin hole and the second pin hole are connected through a pin (6) and a safety pin (7) to connect the base (2) and the connecting arm (1).

4. The device for preventing the pin member from retreating for an assembled bridge according to claim 1, wherein the bailey bracket (8) comprises a cross member (81) formed of a channel, and the hook (11) of the connecting arm (1) is hooked on the channel.