CN-121990457-A - Bridge crane trolley frame structure

CN121990457ACN 121990457 ACN121990457 ACN 121990457ACN-121990457-A

Abstract

The invention relates to the technical field of lifting transportation equipment, and particularly discloses a trolley frame structure of a bridge crane, which comprises a frame, wherein an adjusting component is arranged below the frame, the frame is formed by splicing a plurality of support columns, support plates I are jointly fixed at the tops of the support columns, wheels are mounted at the bottoms of the support columns positioned on the same side of the frame, the frame is a rectangular frame, four lifting components are respectively arranged at the middle points of four sides of the frame, the lifting components comprise U-shaped support seats, the bottoms of the support seats are in sliding connection with the support columns, a winding drum is rotationally connected between the inner walls of the support seats, steel wire ropes I are wound on the winding drum, mounting grooves I are formed in one side, far away from the frame, of the support seats along the length direction, two guide wheels I are symmetrically arranged in the mounting grooves I, one side wall of each guide wheel I is rotationally connected with one inner wall of each mounting groove, and the lifting components are used for solving the problem that a traditional bridge crane is low in lifting stability and safety.

Inventors

QIU YONGFENG
HUA BINGYU
XIE ZHANGHONG
WANG YUCHEN
HUANG SHENGXIANG
SI JUNYING
SHI YONGCHANG
SHEN JIANLIANG
CHEN ZHIWEI
ZHONG LEI
DONG HONGYU
ZHAO BIXIA

Assignees

杭州华新机电工程有限公司

Dates

Publication Date: 20260508
Application Date: 20260311

Claims (10)

1. The trolley frame structure of the bridge crane is characterized by comprising a frame, wherein an adjusting component is arranged below the frame; The frame is formed by splicing a plurality of support columns, the top parts of the support columns are jointly fixed with a first support plate, and wheels are arranged at the bottoms of the support columns positioned on the same side of the frame; the frame is a rectangular frame, and four lifting assemblies are respectively arranged at the middle points of four sides of the frame; The lifting assembly comprises a U-shaped supporting seat, wherein the bottom of the supporting seat is in sliding connection with the supporting column; one side, far away from the frame, of the supporting seat is provided with a first installation groove along the length direction, two first guide wheels are symmetrically arranged in the first installation groove, and one side wall of each guide wheel is rotationally connected with the inner wall of the first installation groove; The first steel wire rope passes through the space between the first guide wheels and is contacted with the first guide wheels simultaneously, and a first coiling wheel which is arranged coaxially with the first guide wheels is fixed on the side wall of the other side of each first guide wheel; a second steel wire rope is arranged between the first winding wheels in the same lifting assembly, and two ends of the second steel wire rope are respectively fixed on the corresponding first winding wheels; The adjusting assembly comprises a cross expansion bracket, the cross expansion bracket is provided with four expansion ends, adjusting rings are fixed on the four expansion ends, a second supporting plate is fixed on one side, away from the cross expansion bracket, of each adjusting ring, a second winding wheel is fixed on the second supporting plate, the four second winding wheels are in one-to-one correspondence with the four supporting seats, the axis of each second winding wheel is located in the middle position of the corresponding first winding wheel of the lifting assembly, and the second steel wire rope is wound on the corresponding second winding wheel.
2. The bridge crane trolley frame structure of claim 1, wherein the inner wall of the adjusting ring is rotatably connected with a supporting block, a second installation groove is formed in the supporting block and penetrates through two ends of the supporting block, a second guide wheel is rotatably connected between the inner walls of two sides of the second installation groove, a wire penetrating groove is formed in the side wall of the second installation groove, a second wire rope penetrates through the wire penetrating groove and the second guide wheel, and the second wire rope is in contact with the second guide wheel.
3. The trolley frame structure of the bridge crane according to claim 1, wherein a first motor is fixed at the bottom of the second support plate, a gear is fixed at the output end of the first motor towards the inner wall of the second support plate, a gear ring is fixed on the outer wall of the support block in a coaxial manner, and the gear ring are meshed with each other.
4. The bridge crane trolley frame structure of claim 1, wherein a mounting block is fixed at the center of the top of the supporting plate, four second cylinders are arranged on the outer wall of the mounting block in a one-to-one correspondence manner based on a central circumferential array, the four second cylinders are respectively arranged with four lifting assemblies, second output ends of the second cylinders are respectively fixed with a second motor, sliding seats are respectively fixed at the bottoms of the second motors, and the sliding seats are in sliding connection with the first supporting plate.
5. The trolley frame structure of the bridge crane according to claim 4, wherein the output end of the motor is connected to a speed reducer, the speed reducer is fixed to the first support plate, the speed reducer extends to the side wall of the support seat through the first support plate, and corresponds to the position of the winding drum, and the output end of the speed reducer extends through the support seat and is fixedly connected with the winding drum.
6. The trolley frame structure of the bridge crane according to claim 1, wherein each first guide wheel is provided with a guide groove in the circumferential direction, and the guide groove is used for passing through the first steel wire rope and preventing the first steel wire rope from shifting; the two guide wheels in the same installation groove I are in circumferential contact, and at the moment, the contact parts of the two guide grooves jointly form a guide channel of the steel wire rope I.
7. The bridge crane trolley frame structure of claim 1, wherein the bottom of the support column on the same side is fixedly provided with a mounting frame together, the mounting frame is fixedly welded with the bottom of the support column, and the length of the mounting frame is matched with the distance between the support columns on the same side.
8. The trolley frame structure of the bridge crane according to claim 7, wherein wheels are symmetrically installed in the installation frame, the wheels are rotatably connected with the installation frame through bearings, and wheel grooves of the wheels are matched with the track size of the main beam.
9. The trolley frame structure of the bridge crane according to claim 1, wherein four first air cylinders are arranged in the cross telescopic frame and are respectively arranged at the four telescopic ends in a one-to-one correspondence manner, so that a stable driving source is provided for telescopic action of the cross telescopic frame.
10. A bridge crane trolley structure according to claim 2, wherein in an initial condition the position between the two first guide wheels in the same lifting assembly is on the same axis as the position of the wire-penetration slot and the second guide wheels.

Description

Bridge crane trolley frame structure Technical Field The invention relates to the technical field of hoisting and transporting equipment, in particular to a trolley frame structure of a bridge crane. Background In the fields of industrial production, logistics transportation and the like, the bridge crane is widely applied to operations such as loading, unloading, carrying, hoisting and the like of cargoes as an important hoisting device. The trolley frame structure of the bridge crane is a key component part of the bridge crane, and carries a lifting mechanism and other important parts of the crane, so that the performance and the operation safety of the crane are directly affected. The traditional bridge crane trolley frame structure has some defects in the design and use process. On the one hand, when lifting a heavy object, because the gravity center of the heavy object may have offset, the traditional lifting mode is difficult to ensure that four lifting points apply uniform tension to the heavy object, and the heavy object is easy to roll in the lifting process, so that the operation risk is increased, and even the safety accident may be caused. On the other hand, the existing trolley frame structure is not flexible enough when adjusting the lifting point position and the angle of the steel wire rope, is difficult to adapt to the lifting demands of weights with different shapes, sizes and gravity center positions, and limits the universality and the operation efficiency of the crane. In addition, in the operation process of the traditional trolley frame structure, the steel wire rope is easy to be subjected to uneven tension and friction, so that the abrasion of the steel wire rope is increased, the service life of the steel wire rope is shortened, and the maintenance cost and the downtime of equipment are increased. Moreover, the movement stability of the trolley frame is still to be improved, and shaking and other conditions possibly occur in the transverse movement process, so that the accuracy of lifting operation is affected. Therefore, a trolley frame structure of a bridge crane is provided, which is used for solving the problem of low lifting stability and safety of the traditional bridge crane. Disclosure of Invention The invention aims to provide a trolley frame structure of a bridge crane, which aims to solve the problems in the background technology. In order to achieve the above purpose, the present invention adopts the following technical scheme: the trolley frame structure of the bridge crane comprises a frame, wherein an adjusting component is arranged below the frame; The frame is formed by splicing a plurality of support columns, the top parts of the support columns are jointly fixed with a first support plate, and wheels are arranged at the bottoms of the support columns positioned on the same side of the frame; the frame is a rectangular frame, and four lifting assemblies are respectively arranged at the middle points of four sides of the frame; The lifting assembly comprises a U-shaped supporting seat, wherein the bottom of the supporting seat is in sliding connection with the supporting column; one side, far away from the frame, of the supporting seat is provided with a first installation groove along the length direction, two first guide wheels are symmetrically arranged in the first installation groove, and one side wall of each guide wheel is rotationally connected with the inner wall of the first installation groove; The first steel wire rope passes through the space between the first guide wheels and is contacted with the first guide wheels simultaneously, and a first coiling wheel which is arranged coaxially with the first guide wheels is fixed on the side wall of the other side of each first guide wheel; a second steel wire rope is arranged between the first winding wheels in the same lifting assembly, and two ends of the second steel wire rope are respectively fixed on the corresponding first winding wheels; The adjusting assembly comprises a cross expansion bracket, the cross expansion bracket is provided with four expansion ends, adjusting rings are fixed on the four expansion ends, a second supporting plate is fixed on one side, away from the cross expansion bracket, of each adjusting ring, a second winding wheel is fixed on the second supporting plate, the four second winding wheels are in one-to-one correspondence with the four supporting seats, the axis of each second winding wheel is located in the middle position of the corresponding first winding wheel of the lifting assembly, and the second steel wire rope is wound on the corresponding second winding wheel. Preferably, the inner wall of the adjusting ring is rotationally connected with a supporting block, a second installation groove is formed in the supporting block in a penetrating manner at two ends of the supporting block, a second guide wheel is rotationally connected between the inner walls of two sides of