CN214301321U

CN214301321U - Telescopic cantilever beam structure of walking type bridge girder erection machine

Info

Publication number: CN214301321U
Application number: CN202122078888.9U
Authority: CN
Inventors: 张建鑫; 张志伟; 杨自乾; 张立胜
Original assignee: Henan Lugang Crane Group Co ltd
Current assignee: Henan Lugang Crane Group Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2021-09-28
Anticipated expiration: 2031-08-31

Abstract

The utility model relates to a bridge girder erection machine technical field specifically is a flexible cantilever beam structure of walking bridge girder erection machine, including bridge girder erection machine body and flexible arm, the surface of flexible arm and the inner wall sliding connection of bridge girder erection machine body, the inner wall sliding connection of bridge girder erection machine body has the balancing piece, the inside of bridge girder erection machine body is provided with the drive arrangement who makes the balancing piece to with flexible arm opposite direction motion, the inside of balancing piece is provided with the auxiliary device who makes the balancing piece focus descend, the mouth that goes up and down has been seted up to the bottom of bridge girder erection machine body. This flexible cantilever beam structure of walking bridge girder erection machine through mutually supporting between each structure in the drive arrangement for flexible arm can drive the balancing piece in step and move to opposite direction at the in-process that stretches out, and then reduces the uneven condition of the two sides atress of bridge girder erection machine body, makes the bridge girder erection machine body can not be overturned because of one side overweight in the in-process of work, has increased the security in the use.

Description

Telescopic cantilever beam structure of walking type bridge girder erection machine

Technical Field

The utility model relates to a bridge girder erection machine technical field specifically is a flexible cantilever beam structure of walking bridge girder erection machine.

Background

With the rapid development of the construction of railway passenger dedicated lines and high-speed railways in China, various types of bridge girder erection machines are put into use, most of the types of the bridge girder erection machines adopt a lower guide beam walking type structure, and the existing walking type bridge girder erection machines are provided with telescopic cantilever beam structures.

After the telescopic arm of the walking type bridge girder erection machine extends out to one side, one side of the bridge girder erection machine is heavier, the weight of the other side of the bridge girder erection machine is reduced, the two sides of the bridge girder erection machine are unbalanced in stress, when the telescopic arm carries out lifting work, the weights of the two sides are seriously unbalanced, a vehicle is easily overturned, and safety accidents are caused.

SUMMERY OF THE UTILITY MODEL

The specification provides a telescopic cantilever beam structure of a walking type bridge girder erection machine.

The embodiment of the specification provides a telescopic cantilever beam structure of a walking type bridge girder erection machine, which comprises a bridge girder erection machine body and a telescopic arm, wherein the surface of the telescopic arm is in sliding connection with the inner wall of the bridge girder erection machine body, the inner wall of the bridge girder erection machine body is in sliding connection with a balance block, a driving device which enables the balance block to move in the direction opposite to the direction of the telescopic arm is arranged in the bridge girder erection machine body, an auxiliary device which enables the gravity center of the balance block to descend is arranged in the balance block, and a lifting port is formed in the bottom of the bridge girder erection machine body.

Preferably, the driving device comprises a driving rack, the surface of the driving rack is fixedly connected with one side of the telescopic arm, and a large gear is meshed with the surface of the driving rack.

Preferably, the bottom fixedly connected with connecting rod of gear wheel, the surface of connecting rod rotates with the inner wall of frame bridge crane body to be connected, the one end fixedly connected with pinion that the gear wheel was kept away from to the connecting rod.

Preferably, a driven rack is meshed with one side of the pinion far away from the driving rack, and one side of the driven rack far away from the pinion is fixedly connected with the surface of the balance weight.

Preferably, the auxiliary device comprises a supporting rod, the surface of the supporting rod is rotatably connected with the inner wall of the balance block, a rope is wound on the surface of the supporting rod, and a weight is fixedly mounted at one end of the rope.

Preferably, one end of the support rod, which is far away from the driven rack, is fixedly connected with a linkage gear, the surface of the linkage gear is meshed with a fixed rack, and the surface of the fixed rack is fixedly connected with the inner wall of the bridge girder erection machine body

According to the technical scheme, the telescopic cantilever beam structure of the walking bridge girder erection machine provided by the embodiment of the specification at least has the following beneficial effects:

(1) this flexible cantilever beam structure of walking bridge girder erection machine through the mutually supporting between each structure among the drive arrangement for flexible arm can drive the balancing piece in step and move to opposite direction at the in-process that stretches out, and then reduces the uneven condition of the two sides atress of bridge girder erection machine body, makes the bridge girder erection machine body can not be overturned because of one side overweight at the in-process of work, greatly increased the security of bridge girder erection machine in the use.

(2) This flexible cantilever beam structure of walking bridge girder erection machine through setting up auxiliary device, can make the inside pouring weight of balancing piece descend from the mouth that goes up and down for the bottom and the ground contact of pouring weight, and then increase the ability of grabbing ground of bridge girder erection machine body, further increased the security.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application:

fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of a part of the structure of the present invention;

fig. 3 is a side cross-sectional view of the present invention;

fig. 4 is a schematic view of the driving device of the present invention.

In the figure: 1. a bridge girder erection machine body; 2. a telescopic arm; 3. a counterbalance; 4. a drive device; 41. a drive rack; 42. a connecting rod; 43. a bull gear; 44. a pinion gear; 45. a driven rack; 5. an auxiliary device; 51. a support bar; 52. a rope; 53. a weight block; 54. a linkage gear; 55. fixing a rack; 6. and a lifting port.

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 present invention provides a technical solution:

the utility model provides a flexible cantilever beam structure of walking bridge girder erection machine, includes bridge girder erection machine body 1 and flexible arm 2, the surface of flexible arm 2 and the inner wall sliding connection of bridge girder erection machine body 1, the inner wall sliding connection of bridge girder erection machine body 1 has balancing piece 3, and the quantity of balancing piece 3 is two, and two balancing pieces 3 use the central line of bridge girder erection machine body 1 to be the symmetry axis symmetric distribution. The bridge girder erection machine comprises a bridge girder erection machine body 1, a driving device 4 enabling a balance block 3 to move in the direction opposite to the direction of a telescopic arm 2 is arranged in the bridge girder erection machine body 1, an auxiliary device 5 enabling the gravity center of the balance block 3 to descend is arranged in the balance block 3, and a lifting port 6 is formed in the bottom of the bridge girder erection machine body 1.

In this embodiment, the driving device 4 includes two driving racks 41, the surface of the driving rack 41 is fixedly connected to one side of the telescopic arm 2, and the two driving racks 41 are respectively located at two sides of the telescopic arm 2. The surface of the driving rack 41 is engaged with a large gear 43.

Further, the bottom fixedly connected with connecting rod 42 of gear wheel 43, the surface of connecting rod 42 rotates with the inner wall of bridging machine body 1 and is connected, the one end fixedly connected with pinion 44 of gear wheel 43 is kept away from to connecting rod 42, the one side meshing that drive rack 41 was kept away from to pinion 44 has driven rack 45, driven rack 45 keeps away from one side of pinion 44 and the fixed surface of balancing piece 3 and is connected, through setting up gear wheel 43 and pinion 44, make when flexible arm 2 removes great distance, balancing piece 3 can remove less distance, and then avoided the overlength that sets up balancing piece 3, and occupy too much construction space, or can't extend because of extending the space not enough.

It should be noted that the auxiliary device 5 includes a support rod 51, a surface of the support rod 51 is rotatably connected to an inner wall of the balance weight 3, one end of the support rod 51 passes through one side of the balance weight 3 and extends into the bridge girder erection machine body 1, and a cavity for movement of the support rod 51 is formed in the bridge girder erection machine body 1. A rope 52 is wound around the surface of the support rod 51, and a weight 53 is fixedly mounted at one end of the rope 52.

It should be noted that a linkage gear 54 is fixedly connected to an end of the support rod 51 away from the driven rack 45, a fixed rack 55 is engaged with a surface of the linkage gear 54, a surface of the fixed rack 55 is fixedly connected with an inner wall of the bridge girder erection machine body 1, the fixed rack 55 is not engaged with the linkage gear 54 at an initial position, and the linkage gear 54 is engaged with the fixed rack 55 only after the weight 53 moves above the lifting port 6.

When the telescopic cantilever beam structure of the walking bridge girder erection machine is used, when the telescopic arm 2 moves, the driving rack 41 is driven to move, the driving rack 41 drives the big gear 43 to rotate, the big gear 43 drives the small gear 44 to rotate through the connecting rod 42, the small gear 44 drives the driven rack 45 to move in the direction opposite to the telescopic arm 2, and the driven rack 45 drives the balance block 3 to move in the direction opposite to the telescopic arm 2; the balance block 3 drives the supporting rod 51 to move, the supporting rod 51 drives the linkage gear 54 to move, when the linkage gear 54 moves to a certain distance, the linkage gear 54 is meshed with the fixed rack 55 and moves and rotates under the driving of the fixed rack 55, the linkage gear 54 drives the supporting rod 51 to rotate, the supporting rod 51 unreels the rope 52 in the rotating process, and the weight 53 descends from the lifting port 6.

The above embodiments are only used for illustrating the embodiments of the present invention, and are not intended to limit the embodiments of the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the embodiments of the present invention, and therefore all equivalent technical solutions also belong to the scope of the embodiments of the present invention, and the scope of patent protection of the embodiments of the present invention should be defined by the claims.

Claims

1. The utility model provides a flexible cantilever beam structure of walking bridge girder erection machine, includes bridge girder erection machine body (1) and flexible arm (2), its characterized in that: the surface of flexible arm (2) and the inner wall sliding connection of bridging machine body (1), the inner wall sliding connection of bridging machine body (1) has balancing piece (3), the inside of bridging machine body (1) is provided with makes balancing piece (3) to with flexible arm (2) opposite direction motion's drive arrangement (4), the inside of balancing piece (3) is provided with makes balancing piece (3) focus auxiliary device (5) that descend, lifting opening (6) have been seted up to the bottom of bridging machine body (1).

2. The telescopic cantilever beam structure of the walking type bridge girder erection machine according to claim 1, wherein: the driving device (4) comprises a driving rack (41), the surface of the driving rack (41) is fixedly connected with one side of the telescopic arm (2), and a large gear (43) is meshed with the surface of the driving rack (41).

3. The telescopic cantilever beam structure of the walking type bridge girder erection machine according to claim 2, wherein: the bottom fixedly connected with connecting rod (42) of gear wheel (43), the surface of connecting rod (42) rotates with the inner wall of bridging machine body (1) and is connected, the one end fixedly connected with pinion (44) of gear wheel (43) is kept away from in connecting rod (42).

4. The telescopic cantilever beam structure of the walking type bridge girder erection machine according to claim 3, wherein: one side of the pinion (44) far away from the driving rack (41) is meshed with a driven rack (45), and one side of the driven rack (45) far away from the pinion (44) is fixedly connected with the surface of the balance weight (3).

5. The telescopic cantilever beam structure of the walking type bridge girder erection machine according to claim 1, wherein: the auxiliary device (5) comprises a supporting rod (51), the surface of the supporting rod (51) is rotationally connected with the inner wall of the balance block (3), a rope (52) is wound on the surface of the supporting rod (51), and a weight (53) is fixedly mounted at one end of the rope (52).

6. The telescopic cantilever beam structure of the walking type bridge girder erection machine according to claim 5, wherein: one end, far away from the driven rack (45), of the supporting rod (51) is fixedly connected with a linkage gear (54), a fixed rack (55) is meshed on the surface of the linkage gear (54), and the surface of the fixed rack (55) is fixedly connected with the inner wall of the bridge girder erection machine body (1).