CN217149919U

CN217149919U - Limiting device for pushing steel box girder

Info

Publication number: CN217149919U
Application number: CN202220368352.2U
Authority: CN
Inventors: 蒋德虎; 刘礼民; 蒋昕昱; 刘福荣; 孙运曙; 李金花; 王周领; 马乔; 王康鹏; 丁红岗; 阳光灿
Original assignee: Kunming Jiaji Steel Structure Engineering Co ltd
Current assignee: Kunming Jiaji Steel Structure Engineering Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-08-09
Anticipated expiration: 2032-02-23

Abstract

The utility model discloses a stop device that is used for steel box girder top to push relates to steel box girder construction technical field. The utility model provides a stop device that is used for steel box girder to push away which characterized in that: including backing up roof beam and locating part, the locating part is fixed to be set up in backing up the roof beam bottom, and the locating part is provided with 4 ~ 6, and the locating part is at the jack lateral wall along radial evenly distributed. The limiting part is arranged at the bottom of the pad beam to limit the moving range of the jack, so that the position deviation between the jack and the pad beam is controlled within a certain range, and even if the jack and the pad beam slightly deviate, the jack and the pad beam cannot fall off under the action of the limiting part.

Description

Limiting device for pushing steel box girder

Technical Field

The utility model relates to a steel case roof beam construction technical field, concretely relates to a stop device that is used for steel case roof beam top to push away.

Background

In the high-speed construction and development of road networks in China, bridge engineering technology plays an extremely important role, and a series of advanced technologies and construction processes such as turning bridges, floating bridges, pushing bridges and the like appear. In the construction of pushing up the bridge, often adopt jacking jack cooperation pad roof beam to carry out the ascending top in vertical side to the steel box roof beam, need a plurality of jacks cooperation to use under the big condition of steel box roof beam size usually, because the atress problem, can cause the jack piston to take place the problem of skew with the pad roof beam occasionally, lead to the jacking security poor, the incident such as pad roof beam drops appears even, construction safety and quality are difficult to guarantee, the efficiency of construction is low, consequently, need to develop a stop device who is used for the top of steel box roof beam to push urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stop device for steel case roof beam top pushes away can take place the problem of offset between jack piston and the pad roof beam in solving current construction.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a stop device that is used for steel box girder to push away which characterized in that: including backing up roof beam and locating part, the locating part is fixed to be set up in backing up the roof beam bottom, and the locating part is provided with 4 ~ 6, and the locating part is at the jack lateral wall along radial evenly distributed.

The further technical scheme is that the limiting piece is sheet-shaped, and a chamfer is arranged at the bottom of the limiting piece.

According to a further technical scheme, the limiting part is arc-shaped, and a reinforcing plate is arranged between the outer side wall of the limiting part and the bottom of the pad beam.

The further technical scheme is that a sliding groove is formed in the bottom of the pad beam, a sliding block plate is connected in the sliding groove in a sliding mode, the sliding block plate is I-shaped, and a limiting piece is fixed at the bottom of the sliding block plate.

According to a further technical scheme, a plurality of positioning holes are formed in the bottom wall of the sliding groove along the length direction of the bottom wall of the sliding groove, clamping plates are arranged at two ends of the sliding block plate, and the clamping plates are fixed on the positioning holes.

A further technical scheme is that the clamping plate is L-shaped.

A further technical scheme is that buffer springs are arranged between the top wall of the sliding groove and the top of the sliding block plate and between the sliding block plate and the bottom wall of the sliding groove.

The working principle is as follows: the limiting parts are 4-6, are uniformly distributed on the outer side wall of the jack along the radial direction and are fixedly arranged at the bottom of the pad beam, when the jack is used, the top of the pad beam is contacted with the bottom of the steel box beam to be pushed, and the jack piston moves upwards along the limiting parts to push the pad beam until the steel box beam is pushed to a specified position. In the process, the limiting piece limits the moving range of the jack, and even if the jack and the pad beam deviate at a certain position, the jack and the pad beam cannot fall off under the action of the limiting piece. Strengthen the intensity of locating part, the locating part can use the arc slice to establish the reinforcing plate simultaneously can add on the lateral wall. When a plurality of jacks are required to be installed below the pad beam, a sliding groove can be formed in the bottom of the pad beam, a sliding block plate is arranged in the sliding groove, and the sliding block plate is fixed with the limiting part, so that the requirement of multipoint pushing can be met, and the position of the limiting part can be selected according to actual requirements.

Compared with the prior art, the beneficial effects of the utility model are that: the limiting device for the steel box beam pushing is simple in structure and convenient to operate, the moving range of the jack is limited by arranging the limiting part at the bottom of the pad beam, so that the position deviation between the jack and the pad beam is controlled within a certain range, and even if the jack and the pad beam slightly deviate, the jack and the pad beam cannot fall off under the action of the limiting part.

Drawings

Fig. 1 is a schematic view of a first structure of the present invention.

Fig. 2 is a schematic diagram of a second structure of the present invention.

Fig. 3 is a third schematic structural diagram of the present invention.

Fig. 4 is a schematic side view of the present invention.

In the figure: 1-pad beam, 101-sliding chute, 2-limiting piece, 3-jack, 4-sliding block plate, 5-clamping plate, 6-spring and 7-reinforcing plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

Fig. 1 shows a structural limiting device for pushing a steel box girder, which comprises a pad girder 1 and a limiting part 2, wherein the pad girder 1 can be made of i-steel or channel steel by welding, and reinforcing ribs can be arranged on the side wall of the pad girder at intervals for increasing the strength of the pad girder. The limiting piece 2 is a sheet straight plate and is welded at the bottom of the pad beam 1, 4-6 limiting pieces 2 are arranged, and the limiting pieces 2 are uniformly distributed on the outer side wall of the jack 3 along the radial direction. To reduce weight, the bottom of the limiting member 2 may be chamfered. When the pushing device is used, the top of the pad beam 1 is contacted with the bottom of a steel box beam to be pushed, and the piston of the jack 3 moves upwards along the limiting part 2 to push the pad beam 1 until the steel box beam is pushed to a specified position. In the process, the limiting part 2 limits the moving range of the jack 3, and even if the jack 3 and the pad beam 1 generate certain position deviation, the jack 3 and the pad beam 1 cannot fall off under the action of the limiting part 2.

Example 2

Fig. 2 shows another structure of a limiting device for steel box girder jacking, which comprises a pad beam 1 and a limiting part 2, wherein the pad beam 1 can be made of i-steel or channel steel by welding, and reinforcing ribs can be arranged on the side wall of the pad beam at intervals for increasing the strength of the pad beam. The locating part 2 adopts the arc form steel sheet, and the arc form steel sheet internal diameter suits with jack 3 external diameter. The limiting piece 2 is welded at the bottom of the pad beam 1, 4-6 limiting pieces 2 are arranged, and the limiting pieces 2 are uniformly distributed on the outer side wall of the jack 3 along the radial direction. In order to increase the strength of the limiting part 2, a reinforcing plate 7 is arranged between the outer side wall of the limiting part 2 and the bottom of the pad beam 1.

Example 3

Fig. 3 shows another structure of a limiting device for pushing a steel box girder, which comprises a pad girder 1, wherein a sliding groove 101 is formed in the bottom of the pad girder 1, a sliding block plate 4 is connected in the sliding groove 101 in a sliding manner, and the sliding block plate 4 is in an i shape and is fixed with a limiting piece 2 at the bottom. The limiting part 2 is an arc-shaped steel plate, and the inner diameter of the arc-shaped steel plate is matched with the outer diameter of the jack 3. The limiting piece 2 is welded at the bottom of the sliding block plate 4, the limiting piece 2 is provided with 4-6, and the limiting piece 2 is uniformly distributed on the outer side wall of the jack 3 along the radial direction. In order to increase the strength of the limiting part 2, a reinforcing plate 7 is arranged between the outer side wall of the limiting part 2 and the bottom of the slider plate 4. When a plurality of jacks 2 need to be installed below the pad beam 1, a corresponding number of sliding block plates 4 are arranged in the sliding groove 101, and the sliding block plates 4 are fixed with the limiting part 2, so that the requirement of multipoint pushing can be met, and the position of the limiting part 2 can be selected according to actual requirements. After 4 location of slider board, for preventing that it from sliding in spout 101, 4 both ends of slider board are provided with cardboard 5, and cardboard 5 is the L type, fixes on the locating hole that corresponds on the spout 101 diapire through the fixed orifices at top. As shown in fig. 4, in order to reduce the vibration between the slider plate 5 and the chute 101 and prolong the service life, a buffer spring 6 or a buffer rubber pad is disposed between the top wall of the chute and the top of the slider plate, and between the slider plate and the bottom wall of the chute.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More particularly, various variations and modifications are possible in the component parts and/or arrangements within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. The utility model provides a stop device that is used for steel box girder to push away which characterized in that: the jack comprises a pad beam (1) and limiting pieces (2), wherein the limiting pieces (2) are fixedly arranged at the bottom of the pad beam (1), 4-6 limiting pieces (2) are arranged, and the limiting pieces (2) are uniformly distributed on the outer side wall of the jack (3) along the radial direction; the bottom of the pad beam (1) is provided with a sliding groove (101), the sliding groove (101) is connected with a sliding block plate (4) in a sliding mode, and the sliding block plate (4) is I-shaped and is fixed with a limiting piece (2) at the bottom.

2. The limiting device for steel box girder jacking according to claim 1, wherein: the limiting piece (2) is sheet-shaped, and a chamfer is arranged at the bottom of the limiting piece.

3. The limiting device for steel box girder jacking according to claim 1, wherein: the limiting part (2) is arc-shaped, and a reinforcing plate (7) is arranged between the outer side wall of the limiting part (2) and the bottom of the pad beam (1).

4. The limiting device for steel box girder jacking according to claim 1, wherein: a plurality of positioning holes are formed in the bottom wall of the sliding groove (101) along the length direction of the sliding groove, clamping plates (5) are arranged at two ends of the sliding plate (4), and the clamping plates (5) are fixed on the positioning holes.

5. The limiting device for steel box girder jacking according to claim 4, wherein: the clamping plate (5) is L-shaped.

6. The limiting device for steel box girder jacking according to claim 1, wherein: buffer springs are arranged between the top wall of the sliding groove (101) and the top of the sliding block plate (4) and between the sliding block plate (4) and the bottom wall of the sliding groove (101).