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CN-122007759-A - Cantilever crane internal stay structure

CN122007759ACN 122007759 ACN122007759 ACN 122007759ACN-122007759-A

Abstract

The application provides an arm support internal support structure, and relates to the technical field of engineering machinery. The structure comprises a supporting seat, a plurality of wedge-shaped sliding blocks, a plurality of tightening assemblies and at least one tightening assembly, wherein the wedge-shaped sliding blocks are sequentially connected along the extending direction of the supporting seat, the wedge-shaped sliding blocks positioned at the head part or the tail part are connected with the supporting seat, the wedge-shaped sliding blocks can move relative to the supporting seat, the tightening assemblies are movably connected with the supporting seat, and at least one tightening assembly is movably arranged on the side face of each wedge-shaped sliding block. According to the structure, when the tightening assembly is abutted against the inner wall of the arm support, the tightening assembly provides supporting force for the side plate of the arm support in the arm support, the problem that the side plate of the arm support is easy to concave during rivet welding is solved, meanwhile, after the device is placed in the arm support, the tightening assembly is abutted against the inner wall of the arm support under the drive of the wedge-shaped sliding block, and after the side plate is corrected to concave, the tightening assembly is only required to be separated from the inner wall of the arm support and taken out of the device, so that the operation is simple.

Inventors

  • SHEN WENXUE
  • XU SHAN
  • LI PENG
  • MU ZHONGLIN
  • LIU YUNZHAN
  • LI KELIANG

Assignees

  • 中国铁建重工集团股份有限公司

Dates

Publication Date
20260512
Application Date
20260313

Claims (10)

  1. 1. An arm support internal support structure, which is characterized by comprising: a support base (100); The wedge-shaped sliding blocks (200) are sequentially connected along the extending direction of the supporting seat (100), the wedge-shaped sliding blocks (200) positioned at the head part or the tail part are connected with the supporting seat (100), and the wedge-shaped sliding blocks (200) can move relative to the supporting seat (100); The support device comprises a plurality of tightening assemblies (300), wherein the tightening assemblies (300) are movably connected with a support seat (100), at least one tightening assembly (300) is movably arranged on the side face of each wedge-shaped sliding block (200), and the tightening assemblies (300) are configured to deviate from or face the support seat (100) under the driving of the wedge-shaped sliding blocks (200) when the wedge-shaped sliding blocks (200) move so as to be in butt joint with or separate from the inner wall of a cantilever crane (900).
  2. 2. The boom inner support structure according to claim 1, wherein the side surface of the wedge-shaped slider (200) is inclined from one end of the wedge-shaped slider (200) to the other end; The side surface of the wedge-shaped sliding block (200) is provided with a sliding groove (210), the extending direction of the sliding groove (210) is consistent with the moving direction of the wedge-shaped sliding block (200), and the tightening assembly (300) is correspondingly inserted into the sliding groove (210) and is in sliding connection with the sliding groove (210); And/or, two ends of the wedge-shaped sliding block (200) are respectively provided with a first connecting part (220) and a second connecting part (230), and the first connecting part (220) of the wedge-shaped sliding block (200) positioned at the head part or the tail part is connected with the supporting seat (100); Also comprises a plurality of connecting pieces (400), wherein the first connecting part (220) of one of the two adjacent wedge-shaped sliding blocks (200) and the second connecting part (230) of the other are connected through the connecting pieces (400).
  3. 3. The boom inner support structure according to claim 2, wherein the chute (210) comprises at least one horizontal section (211) and at least one inclined section (212), the horizontal section (211) and the inclined section (212) being in turn connected.
  4. 4. The boom inner support structure according to claim 2, wherein one end of the connecting piece (400) is a ball head (410), a third connecting portion (420) is arranged at the other end of the connecting piece (400), the second connecting portion (230) and the third connecting portion (420) are detachably connected, and the first connecting portion (220) is hinged to the ball head (410).
  5. 5. The boom inner support structure according to claim 2, wherein the tightening assembly (300) comprises a tightening head (310) and a ball-shaped member (320) arranged on the tightening head (310), the ball-shaped member (320) can rotate relative to the tightening head (310), the ball-shaped member (320) is located in the chute (210), and the tightening head (310) is inserted on the support base (100).
  6. 6. The boom inner support structure according to claim 5, wherein the tightening head (310) comprises a tightening part (311) and an extension part (312) arranged on the tightening part (311), the tightening part (311) is detachably connected with the extension part (312), the ball-shaped member (320) is arranged on the tightening part (311), and the extension part (312) is used for abutting against the boom (900).
  7. 7. The boom inner support structure according to any one of claims 2-6, wherein the support base (100) comprises a housing (110) and a mounting support base (120), the mounting support base (120) is connected with the housing (110), the housing (110) is movably connected with the tightening assembly (300), and the mounting support base (120) is disposed on an end face of the housing (110).
  8. 8. The boom inner support structure according to claim 7, further comprising a driving assembly (500), wherein the driving assembly (500) comprises a driving oil cylinder (510), a mounting sleeve (520), a mounting shaft (530) and a base (540), the base (540) is connected with the mounting support base (120), the mounting shaft (530) is connected with the base (540), the mounting shaft (530) is connected with the driving oil cylinder (510), the driving oil cylinder (510) is connected with the first connecting portion (220), the mounting shaft (530) is connected with the mounting sleeve (520), and the mounting sleeve (520) is connected with the housing (110).
  9. 9. The boom inner support structure according to claim 7, further comprising a sliding sleeve assembly (600), wherein the sliding sleeve assembly (600) comprises a pressing plate (610), a sliding sleeve (620) and a sealing ring (630), the sliding sleeve (620) is inserted on the shell (110), the sealing ring (630) is connected with the sliding sleeve (620), the pressing plate (610) is connected with the sealing ring (630), and the sliding sleeve assembly (600) is sleeved on the tightening assembly (300); The sliding device further comprises sliding pads (700), four sliding pads (700) are respectively arranged on two sides of the wedge-shaped sliding block (200), eight sliding pads (700) are symmetrically arranged, and the sliding pads (700) are connected with the shell (110).
  10. 10. The boom inner support structure of claim 7, further comprising a rolling assembly (800), wherein the rolling assembly (800) comprises a rolling sleeve (810) and a spherical rolling head (820) arranged on the rolling sleeve (810), the spherical rolling head (820) can rotate relative to the rolling sleeve (810), the rolling sleeve (810) is connected with the housing (110), the rolling sleeve (810) is connected with the connecting piece (400), and the spherical rolling head (820) is used for rolling contact with the interior of the boom (900).

Description

Cantilever crane internal stay structure Technical Field The application relates to the technical field of engineering machinery, in particular to an arm support internal stay structure. Background In the field of engineering machinery manufacturing, the rectangular section arm support is widely applied to equipment such as tower cranes, aerial work platforms, engineering vehicles and the like due to the characteristics of high structural strength, high space utilization rate and the like. Such arms are usually composed of two bending plates abutted or four side plate corners, and have hollow structures inside and long lengths (usually several meters to more than ten meters). In the rivet welding process, the side plates of the arm support are required to be accurately positioned and fixed so as to ensure the accuracy of the section size, the uniformity of the weld joint gaps and the consistency of welding quality. In the prior art, the rivet welding positioning of the rectangular section arm support mainly depends on manual operation, and the problem of part indent is solved by manual operation, and screw rods are welded on the outer side surfaces of the bending plates or the side plates, and indent correction is performed in a screw rod drawing mode. Or a supporting plate is arranged inside the arm support. However, the manual operation has the problem of inconvenient operation. Disclosure of Invention The application provides an arm support internal support structure which is used for solving the problem of inconvenient operation. In one aspect, the present application provides an arm support inner support structure, including: A support base; The wedge-shaped sliding blocks are sequentially connected along the extending direction of the supporting seat, the wedge-shaped sliding blocks positioned at the head part or the tail part are connected with the supporting seat, and the wedge-shaped sliding blocks can move relative to the supporting seat; The supporting seat is movably connected with the wedge-shaped sliding blocks, at least one supporting component is movably arranged on the side face of each wedge-shaped sliding block, and the supporting components are configured to deviate from or face the supporting seat to be in butt joint or separation joint with the inner wall of the arm support under the driving of the wedge-shaped sliding blocks when the wedge-shaped sliding blocks move. In one possible implementation manner, the side surface of the wedge-shaped sliding block is inclined from one end of the wedge-shaped sliding block to the other end of the wedge-shaped sliding block; the side face of the wedge-shaped sliding block is provided with a sliding groove, the extending direction of the sliding groove is consistent with the moving direction of the wedge-shaped sliding block, and the tightening assembly part is correspondingly inserted into the sliding groove and is in sliding connection with the sliding groove; And/or, two ends of the wedge-shaped sliding block are respectively provided with a first connecting part and a second connecting part, and the first connecting part of the wedge-shaped sliding block positioned at the head part or the tail part is connected with the supporting seat; The wedge-shaped sliding block further comprises a plurality of connecting pieces, wherein the first connecting part of one of the two adjacent wedge-shaped sliding blocks is connected with the second connecting part of the other wedge-shaped sliding block through the connecting pieces. In one possible implementation manner, the arm support internal support structure provided by the application comprises at least one horizontal section and at least one inclined section, wherein the horizontal section and the inclined section are sequentially communicated. In a possible implementation manner, in the cantilever crane internal bracing structure provided by the application, one end of the connecting piece is a ball head, the other end of the connecting piece is provided with a third connecting part, the second connecting part and the third connecting part are detachably connected, and the first connecting part is hinged with the ball head. In one possible implementation manner, the arm support inner supporting structure provided by the application comprises a supporting head and a spherical member arranged on the supporting head, wherein the spherical member can rotate relative to the supporting head, the spherical member is positioned in the sliding groove, and the supporting head is inserted on the supporting seat. In one possible implementation manner, the inner support structure of the arm support provided by the application comprises the support part and the lengthening part arranged on the support part, wherein the support part is detachably connected with the lengthening part, the spherical part is arranged on the support part, and the lengthening part is used for being abutted with the arm support. In one