CN214362952U

CN214362952U - Jacking device for bridge construction

Info

Publication number: CN214362952U
Application number: CN202022651155.5U
Authority: CN
Inventors: 黄小岸
Original assignee: Individual
Current assignee: Nanjing Chengju Construction Engineering Co.,Ltd.
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-10-08
Anticipated expiration: 2030-11-16

Abstract

The utility model discloses a jacking device for bridge construction, which comprises a base, wherein a first hydraulic cylinder is fixedly arranged at the central position of the top of the base, one end of the first hydraulic cylinder is fixedly connected with a first telescopic rod, one end of the first telescopic rod is fixedly connected with a lifting plate, a sliding groove is arranged at the middle position of the inner bottom of the lifting plate, a sliding block is arranged in the sliding groove, a rack is fixedly arranged at the top of the sliding block, one side of the rack is fixedly connected with one end of a second telescopic rod, the utility model is provided with the rack, the second telescopic rod moves towards the direction close to a second gear, the second telescopic rod moves to drive the rack to move towards the direction close to the second gear, the rotating directions of the first lead screw and the second lead screw are opposite, so that moving blocks on the first lead screw and the second lead screw draw close towards the middle in a moving groove, the moving blocks drive a fixed plate to draw close towards the middle to fix a bridge at the top of the lifting plate, can effectively prevent the bridge from slipping and inclining.

Description

Jacking device for bridge construction

Technical Field

The utility model relates to a bridge construction, in particular to jacking device is used in bridge construction belongs to bridge construction equipment technical field.

Background

With the rapid development of highway construction in China, particularly the development of large-scale highway construction for more than ten years, the remarkable achievement is achieved. With the use of bridges, part of the supports of the bridges are aged or damaged and need to be replaced, the existing expressways enter the major and middle repair periods, and a considerable number of bridges need to be repaired every year. The existing bridge is also constructed in an auxiliary way by adopting a jacking device, and the used jacking devices are different according to the structural size of the bridge.

But the jacking device of present bridge construction usefulness is not good to the fixed effect of bridge for the bridge inclines the problem of landing even in the work progress appear easily, in case appear the landing and cause construction worker injured very easily, its potential safety hazard is great.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a jacking device is used in bridge construction to it is fixed not good to provide the bridge in solving above-mentioned background art, appears the problem of bridge landing easily.

In order to achieve the above object, the utility model provides a following technical scheme: a jacking device for bridge construction comprises a base, wherein a first hydraulic cylinder is fixedly mounted at the center of the top of the base, a first telescopic rod is fixedly connected to one end of the first hydraulic cylinder, a lifting plate is fixedly connected to one end of the first telescopic rod, a sliding groove is formed in the middle of the inner bottom of the lifting plate, a sliding block is arranged in the sliding groove, a rack is fixedly mounted at the top of the sliding block, one side of the rack is fixedly connected with one end of a second telescopic rod, a second hydraulic cylinder is fixedly connected to the other end of the second telescopic rod, rotating shafts are rotatably connected to the inner walls of the two sides of the lifting plate, a second gear is fixedly mounted at the middle of the outer side of each rotating shaft and meshed with the rack, a first lead screw and a second lead screw are arranged above each rotating shaft, one end of the first lead screw is fixedly connected with one end of the second lead screw, the outer side of the joint of the first lead screw and the second lead screw is fixedly provided with a first gear, the first gear is meshed with a second gear, moving blocks are arranged on the first lead screw and the second lead screw, moving grooves are symmetrically formed in the top of the lifting plate, the moving blocks are located in the moving grooves, the top of each moving block extends to the top of the lifting plate, and a fixing plate is fixedly arranged above the top of each moving block.

As an optimized technical scheme of the utility model, the slider is sliding connection with the spout.

As an optimal technical scheme of the utility model, second pneumatic cylinder fixed mounting is on one side inner wall of lifter plate.

As an optimized technical solution of the present invention, the second gear is located above the rack.

As an optimal technical scheme of the utility model, the other end of first lead screw is connected with one side inner wall rotation of lifter plate, the other end of second lead screw is connected with the opposite side inner wall rotation of lifter plate, the turning to of first lead screw and second lead screw is opposite.

As a preferred technical scheme of the utility model, first lead screw and second lead screw all with movable block threaded connection.

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

the utility model discloses the rack has been set up, start the second pneumatic cylinder, second pneumatic cylinder work, make the second telescopic link to the direction motion of being close to the second gear, through setting up slider and spout, make the second telescopic link motion drive rack to the direction motion of being close to the second gear, the rack is connected with the meshing of second gear, it is rotatory to make the second telescopic link drive the second gear in the motion process, the rotatory first gear that drives of second gear is rotatory thereupon, through setting up first lead screw and second lead screw, make the rotatory first lead screw and the second lead screw of driving of first gear rotate, it is opposite to revolve through setting up first lead screw and second lead screw, make the movable block on first lead screw and the second lead screw draw close to the centre in the shifting chute, the movable block drives the fixed plate and draws close to the centre, fix the bridge at lifter plate top, can effectually prevent bridge landing and slope.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic view of the internal structure of the lifter plate of the present invention;

fig. 4 is an enlarged schematic view of the structure at B in fig. 3.

In the figure: 1. a base; 2. a first hydraulic cylinder; 3. a first telescopic rod; 4. a lifting plate; 5. a fixing plate; 6. a moving groove; 7. a moving block; 8. a first lead screw; 9. a second hydraulic cylinder; 10. a second telescopic rod; 11. a second lead screw; 12. a first gear; 13. a rack; 14. a second gear; 15. a rotating shaft; 16. a slider; 17. a chute.

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. 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.

Referring to fig. 1-4, the utility model provides a technical scheme of jacking device for bridge construction:

as shown in the figures 1-4, the lifting device comprises a base 1, a first hydraulic cylinder 2 is fixedly installed at the center of the top of the base 1, one end of the first hydraulic cylinder 2 is fixedly connected with a first telescopic rod 3, one end of the first telescopic rod 3 is fixedly connected with a lifting plate 4, a sliding groove 17 is formed in the middle of the inner bottom of the lifting plate 4, a sliding block 16 is arranged in the sliding groove 17, a rack 13 is fixedly installed at the top of the sliding block 16, one side of the rack 13 is fixedly connected with one end of a second telescopic rod 10, the other end of the second telescopic rod 10 is fixedly connected with a second hydraulic cylinder 9, the sliding block 16 is in sliding connection with the sliding groove 17, the second hydraulic cylinder 9 is fixedly installed on the inner wall of one side of the lifting plate 4, the base 1 is arranged to facilitate installation of the first hydraulic cylinder 2, the first hydraulic cylinder 2 is started, the first hydraulic cylinder 2 works to enable the first telescopic rod 3 to move upwards, the first telescopic rod 3 moves upwards to drive the lifting plate 4 to move upwards, the top of lifter plate 4 lifts the bridge bottom, starts second pneumatic cylinder 9, and second pneumatic cylinder 9 work makes second telescopic link 10 move to the intermediate position of lifter plate 4, through setting up slider 16 and spout 17, makes the motion of second telescopic link 10 drive rack 13 move to the intermediate position of lifter plate 4.

According to the drawings of fig. 1-4, the inner walls of the two sides of the lifting plate 4 are rotatably connected with a rotating shaft 15, a second gear 14 is fixedly installed at the middle position of the outer side of the rotating shaft 15, the second gear 14 is engaged with a rack 13, a first lead screw 8 and a second lead screw 11 are arranged above the rotating shaft 15, one end of the first lead screw 8 is fixedly connected with one end of the second lead screw 11, a first gear 12 is fixedly installed at the outer side of the joint of the first lead screw 8 and the second lead screw 11, the first gear 12 is engaged with the second gear 14, moving blocks 7 are arranged on the first lead screw 8 and the second lead screw 11, moving grooves 6 are symmetrically arranged at the top of the lifting plate 4, the moving blocks 7 are located in the moving grooves 6, the top of the moving blocks 7 extends to the upper portion of the top of the lifting plate 4, a fixing plate 5 is fixedly installed above the top of the moving blocks 7, the other end of the first lead screw 8 is rotatably connected with the inner wall of one side of the lifting plate 4, the other end of the second lead screw 11 is rotationally connected with the inner wall of the other side of the lifting plate 4, the rotating directions of the first lead screw 8 and the second lead screw 11 are opposite, the first lead screw 8 and the second lead screw 11 are both in threaded connection with the moving block 7, the rack 13 is in meshed connection with the second gear 14, so that the second telescopic rod 10 drives the second gear 14 to rotate in the moving process, the installation of the second gear 14 is facilitated by the arrangement of the rotating shaft 15, the second gear 14 rotates to drive the first gear 12 to rotate along with the second gear, through the arrangement of the first lead screw 8 and the second lead screw 11, the first gear 12 rotates to drive the first lead screw 8 and the second lead screw 11 to rotate, through setting up the rotation direction of first lead screw 8 and second lead screw 11 opposite, make movable block 7 on first lead screw 8 and the second lead screw 11 draw close to the centre in shifting chute 6, movable block 7 drives fixed plate 5 and draws close to the centre, fixes the bridge at lifter plate 4 top.

When the jacking device is used, the jacking device for bridge construction facilitates installation of the first hydraulic cylinder 2 by arranging the base 1, the first hydraulic cylinder 2 is started, the first hydraulic cylinder 2 works to enable the first telescopic rod 3 to move upwards, the first telescopic rod 3 moves upwards to drive the lifting plate 4 to move upwards, the top of the lifting plate 4 lifts the bottom of a bridge, the second hydraulic cylinder 9 is started, the second hydraulic cylinder 9 works to enable the second telescopic rod 10 to move towards the direction close to the second gear 14, the second telescopic rod 10 moves to drive the rack 13 to move towards the direction close to the second gear 14 by arranging the sliding block 16 and the sliding groove 17, the rack 13 is meshed with the second gear 14, the second telescopic rod 10 drives the second gear 14 to rotate in the movement process, installation of the second gear 14 is facilitated by arranging the rotating shaft 15, the second gear 14 rotates to drive the first gear 12 to rotate therewith, through setting up first lead screw 8 and second lead screw 11, make the rotatory first lead screw 8 and the rotation of second lead screw 11 of driving of first gear 12, through setting up revolving to opposite of first lead screw 8 and second lead screw 11, make movable block 7 on first lead screw 8 and the second lead screw 11 draw close to the centre in shifting chute 6, movable block 7 drives fixed plate 5 and draws close to the centre, fix the bridge at lifter plate 4 top, can effectually prevent bridge landing and slope.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The jacking device for bridge construction comprises a base (1) and is characterized in that a first hydraulic cylinder (2) is fixedly arranged at the center of the top of the base (1), a first telescopic rod (3) is fixedly connected to one end of the first hydraulic cylinder (2), a lifting plate (4) is fixedly connected to one end of the first telescopic rod (3), a sliding groove (17) is formed in the middle of the inner bottom of the lifting plate (4), a sliding block (16) is arranged in the sliding groove (17), a rack (13) is fixedly arranged at the top of the sliding block (16), one side of the rack (13) is fixedly connected with one end of a second telescopic rod (10), a second hydraulic cylinder (9) is fixedly connected to the other end of the second telescopic rod (10), a rotating shaft (15) is rotatably connected to the inner walls of the two sides of the lifting plate (4), and a second gear (14) is fixedly arranged at the middle position of the outer side of the rotating shaft (15), the lifting plate is characterized in that the second gear (14) is meshed with the rack (13), a first lead screw (8) and a second lead screw (11) are arranged above the rotating shaft (15), one end of the first lead screw (8) is fixedly connected with one end of the second lead screw (11), a first gear (12) is fixedly mounted on the outer side of the joint of the first lead screw (8) and the second lead screw (11), the first gear (12) is meshed with the second gear (14), moving blocks (7) are arranged on the first lead screw (8) and the second lead screw (11), moving grooves (6) are symmetrically formed in the top of the lifting plate (4), the moving blocks (7) are located in the moving grooves (6), the top of each moving block (7) extends to the top of the lifting plate (4), and a fixing plate (5) is fixedly mounted above the top of each moving block (7).

2. The jacking device for bridge construction according to claim 1, wherein: the sliding block (16) is in sliding connection with the sliding groove (17).

3. The jacking device for bridge construction according to claim 1, wherein: and the second hydraulic cylinder (9) is fixedly arranged on the inner wall of one side of the lifting plate (4).

4. The jacking device for bridge construction according to claim 1, wherein: the second gear (14) is positioned above the rack (13).

5. The jacking device for bridge construction according to claim 1, wherein: the other end of the first lead screw (8) is rotatably connected with the inner wall of one side of the lifting plate (4), the other end of the second lead screw (11) is rotatably connected with the inner wall of the other side of the lifting plate (4), and the rotating directions of the first lead screw (8) and the second lead screw (11) are opposite.

6. The jacking device for bridge construction according to claim 1, wherein: the first lead screw (8) and the second lead screw (11) are in threaded connection with the moving block (7).