CN212294372U

CN212294372U - Supporting leg transverse moving mechanism in bridge erecting machine

Info

Publication number: CN212294372U
Application number: CN202020687962.XU
Authority: CN
Inventors: 贾体锋; 冯艳秋; 李高峰; 范友国
Original assignee: Xuzhou XCMG Railway Equipment Co Ltd
Current assignee: Xuzhou XCMG Railway Equipment Co Ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2021-01-05
Anticipated expiration: 2030-04-29

Abstract

The utility model discloses a landing leg sideslip mechanism in bridge girder erection machine, including landing leg crossbeam, articulated seat and drive wheelset, the drive wheelset is fixed to be set up in the bottom of landing leg crossbeam, the drive wheelset passes through articulated seat and landing leg crossbeam fixed connection, the drive wheelset includes first wheelset and second wheelset, first wheelset and second wheelset are followed the thickness direction of landing leg crossbeam sets up side by side, first wheelset and second wheelset pass through the articulated shaft with articulated seat is articulated. Through the structure, the advancing stability and the bearing capacity of the middle supporting leg can be increased, so that the requirement for mounting the large-tonnage precast beam is met.

Description

Supporting leg transverse moving mechanism in bridge erecting machine

Technical Field

The utility model relates to a highway bridging machine technical field, concretely relates to landing leg sideslip mechanism in bridging machine.

Background

The bridge girder erection machine is key equipment in the construction process of precast beams such as roads, bridges and the like. The design rationality of the bridge girder erection machine directly influences the safety of the road construction process. With the maturity of precast beam construction technology and the rapid development of road construction, the bridge girder erection machine gradually develops towards the direction of large tonnage and long span. The landing leg sideslip mechanism arranges mainly to the small-tonnage design among current highway bridging machine, including articulated seat, drive wheelset and landing leg crossbeam, articulated seat and drive wheel constitute the single line and arrange in landing leg crossbeam lower extreme, and it has following shortcoming: the bearing capacity is small, four wheels are generally arranged in the conventional structure and limited by the number of the wheels, and the integral bearing capacity of the middle support leg is small; secondly, the stability is poor, the existing structure has the defects that the four wheels are arranged in a single row, the stability is poor, and the whole bridge girder erection machine is easy to shake in the process of passing through holes and erecting girders; thirdly, the landing leg crossbeam is high, and under the current form of arranging, in order to satisfy bearing capacity, the wheel design diameter is great, and well landing leg overall height is higher, and the frame roof beam in-process influences the beam piece trafficability characteristic. Generally speaking, the supporting legs in the existing highway bridge erecting machine are used as main supporting legs in the girder erecting construction process, and the transverse moving mechanism of the supporting legs cannot meet the requirement of erecting stability of a large-tonnage precast beam.

SUMMERY OF THE UTILITY MODEL

The utility model aims to improve the poor stability's that the landing leg exists defect and not enough among the prior art, provide a landing leg sideslip mechanism in the frame bridge crane, make the frame bridge crane remove steadily, highly reduce to adapt to the demand of erectting of large-tonnage precast beam.

In order to achieve the above object, the utility model discloses a landing leg sideslip mechanism in bridge girder erection machine, including landing leg crossbeam, articulated seat and drive wheelset, the drive wheelset is fixed to be set up in the bottom of landing leg crossbeam, the drive wheelset passes through articulated seat and landing leg crossbeam fixed connection, its characterized in that: the driving wheel set comprises a first wheel set and a second wheel set, the first wheel set and the second wheel set are arranged in parallel along the thickness direction of the supporting leg cross beam, and the first wheel set and the second wheel set are hinged to the hinged seat through hinged shafts.

Furthermore, the number of the driving wheel sets is two, four or eight, and the driving wheel sets are symmetrically arranged along the bottom of the supporting leg beam. The number of the prefabricated beams is increased and the prefabricated beams are symmetrically arranged, so that the prefabricated beams can meet the moving requirement of large-tonnage prefabricated beams.

Furthermore, two wheels are arranged on the first wheel set in parallel along the length direction of the supporting leg cross beam, and two wheels are arranged on the second wheel set in parallel along the length direction of the supporting leg cross beam.

Furthermore, at least one of the first wheel set and the second wheel set of each driving wheel set is connected with a driving device, and the carrying capacity of the whole middle supporting leg is improved by increasing the number of the driving devices.

Furthermore, the number of the articulated shafts is one, and the two wheel sets are connected in series by one articulated shaft.

Preferably, the hinge shaft includes a first hinge shaft and a second hinge shaft, wherein the first wheel set is hinged to the hinge seat through the first hinge shaft, and the second wheel set is hinged to the hinge seat through the second hinge shaft. Through setting up two articulated shafts, can dismantle the maintenance of being convenient for to single wheelset.

The utility model has the advantages that: through set up two wheelsets on the drive wheelset, every wheelset sets up two wheels, stability when landing leg removes in can increasing on one hand, and on the other hand increases its bearing capacity, through setting up two wheelsets, can make the diameter of wheel reduce to the whole height of landing leg in the reduction has improved the trafficability characteristic of precast beam.

Drawings

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

fig. 2 is a schematic front structural view of the present invention;

FIG. 3 is a sectional view taken along line A-A in FIG. 2;

FIG. 4 is a schematic view of a drive wheel assembly;

in the figure, 1-leg beam, 2-hinge seat, 3-drive wheel set, 31-first wheel set, 32-second wheel set, 4-hinge shaft, 41-first hinge shaft, 42-second hinge shaft, 5-drive device.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1-2, a supporting leg traversing mechanism in bridge erecting machine, including supporting leg crossbeam 1, articulated seat 2 and driving wheel group 3, driving wheel group 3 is fixed to be set up in the bottom of supporting leg crossbeam 1, driving wheel group 3 is through articulated seat 2 and supporting leg crossbeam 1 fixed connection, wherein driving wheel group 3 includes first wheelset 31 and second wheelset 32, first wheelset 31 and second wheelset 32 set up side by side along the thickness direction of supporting leg crossbeam 1, first wheelset 31 and second wheelset 32 pass through articulated shaft 4 and articulate seat 2, it explains here, the length of supporting leg crossbeam 1, for set up along the screen left and right directions in fig. 2, its thickness sets up along the screen vertical direction. In the embodiment, the number of the driving wheel sets 3 is two, and can also be four or eight, and the driving wheel sets are symmetrically arranged along the bottom of the supporting leg beam 1, so that the bearing capacity of the whole middle supporting leg can be increased, and the installation requirement of the large-tonnage precast beam can be met. The first wheel set 31 and the second wheel set 32 which are arranged in parallel and run in double lines are arranged on the single driving wheel set 3, so that the walking smoothness of the middle support leg can be improved. As shown in fig. 4, two wheels are arranged in parallel along the length direction of the leg beam 1 on the first wheel set 31, and two wheels are arranged in parallel along the length direction of the leg beam 1 on the second wheel set 32. The number of wheels is doubled compared to the prior art, so that the diameter of the wheels can be reduced appropriately to improve the passability of the precast beam. The driving wheel set 3 is connected in a hinged manner through the hinge shaft 4, that is, two wheels in one wheel set can rotate with the hinge shaft 4 as an axis at a small angle, so that in practical use, when the height of the rail below the driving wheel set is uneven, the two wheels in one wheel set can pass through in a flexible manner, so as to prevent the middle support leg from generating excessive vibration. At least one of the first wheel set 31 and the second wheel set 32 of each driving wheel set 3 is connected with the driving device 5, in this embodiment, the driving device 5 is arranged on the first wheel set 31 of each driving wheel set 3, and in order to meet the installation requirement of the large-tonnage precast beam, the driving devices can be also arranged on the second wheel set 32, or alternatively arranged, so as to optimize the spatial arrangement.

As shown in fig. 3, the hinge shaft 4 includes a first hinge shaft 41 and a second hinge shaft 42, wherein the first wheel set 31 is hinged to the hinge base 2 through the first hinge shaft 41, and the second wheel set 32 is hinged to the hinge base 2 through the second hinge shaft 42. Therefore, the disassembly and the maintenance are convenient. The number of the hinge shafts 4 may be one.

As shown in fig. 4, the driving device 5 is a direct-coupled driving device, which drives two large gears through a small gear, and the large gears drive a wheel respectively. As for the connection of driving wheelset 3 and articulated seat 2, set up two round holes of the same diameter on utilizing the wheel case on first wheelset 31, also set up two round holes of the same diameter on articulated seat 2 with the wheel case, then with two round holes on the wheel case with articulated seat on two round holes involutory, pass the round hole of involutory with first articulated shaft 41, then with first articulated shaft 41 with articulated seat 2 through the cardboard fixed can. The connection of the second wheel set 42 to the articulated seat 2 is the same as described above.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes that can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art can be made within the scope of the claims of the present invention.

Claims

1. The utility model provides a landing leg sideslip mechanism in bridge girder erection machine, includes landing leg crossbeam (1), articulated seat (2) and drive wheelset (3), drive wheelset (3) fixed set up in the bottom of landing leg crossbeam (1), drive wheelset (3) are passed through articulated seat (2) and landing leg crossbeam (1) fixed connection, its characterized in that: the driving wheel set (3) comprises a first wheel set (31) and a second wheel set (32), the first wheel set (31) and the second wheel set (32) are arranged in parallel along the thickness direction of the supporting leg beam (1), and the first wheel set (31) and the second wheel set (32) are hinged to the hinge seat (2) through hinge shafts (4).

2. The leg traversing mechanism in the bridge erecting machine according to claim 1, wherein: the number of the driving wheel sets (3) is two, four or eight, and the driving wheel sets are symmetrically arranged along the bottom of the supporting leg beam (1).

3. A leg traversing mechanism in an bridging machine according to claim 1 or 2, wherein: the first wheel set (31) is provided with two wheels in parallel along the length direction of the supporting leg beam (1), and the second wheel set (32) is provided with two wheels in parallel along the length direction of the supporting leg beam (1).

4. The leg traversing mechanism in the bridge erecting machine according to claim 1, wherein: at least one of the first wheel set (31) and the second wheel set (32) of each of the driving wheel sets (3) is connected with a driving device (5).

5. The leg traversing mechanism in the bridge erecting machine according to claim 1, wherein: the number of the articulated shafts (4) is one.

6. The leg traversing mechanism in the bridge erecting machine according to claim 1, wherein: the hinge shaft (4) comprises a first hinge shaft (41) and a second hinge shaft (42), wherein the first wheel set (31) is hinged to the hinge seat (2) through the first hinge shaft (41), and the second wheel set (32) is hinged to the hinge seat (2) through the second hinge shaft (42).