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CN-122009988-A - Auxiliary arm preassembling assembly and auxiliary arm assembling method

CN122009988ACN 122009988 ACN122009988 ACN 122009988ACN-122009988-A

Abstract

The invention relates to the technical field of engineering machinery and discloses an auxiliary arm preassembly assembly and an auxiliary arm assembly method, wherein the auxiliary arm preassembly assembly comprises a support tool, a support assembly and a support assembly, wherein the support tool is used for supporting the support tool on the ground; the device comprises a connecting seat, an auxiliary arm, a linear driving assembly and a third hanging structure, wherein the connecting seat is provided with a first hanging structure, the auxiliary arm is provided with a plurality of second hanging structures, and the linear driving assembly is provided with the third hanging structure. According to the invention, the supporting tool is arranged, so that the connecting seat can be stabilized on the ground, the problems of potential safety hazard and inaccurate positioning caused by manual temporary support are avoided, and the hanging structure is arranged on the connecting seat, the auxiliary arm and the linear driving assembly, so that the hanging gesture is convenient to control, the assembling operation difficulty of the auxiliary arm and the manual adjustment time can be obviously reduced, and the assembling efficiency is improved. The structure can effectively solve the problems of difficult field assembly and low efficiency of the auxiliary arm, so that the field assembly operation of the auxiliary arm is more convenient, the assembly efficiency is higher, and the safety is higher.

Inventors

  • CHEN HONGQIAO

Assignees

  • 湖南三一中型起重机械有限公司

Dates

Publication Date
20260512
Application Date
20260324

Claims (10)

  1. 1. A sub-arm pre-assembly, comprising: the support tool (1) is used for being supported on the ground and provided with a first connecting structure (101); the connecting seat (2) is provided with a second connecting structure (201), a third connecting structure (202), a fourth connecting structure (203) and a first hanging structure (204), wherein the second connecting structure (201) is detachably connected with the first connecting structure (101); A sub-arm (3) provided with a fifth connection structure (301), a sixth connection structure (302) and a plurality of second hanging structures (303), wherein the fifth connection structure (301) is positioned at one end of the sub-arm (3) and is detachably hinged with the third connection structure (202), and the plurality of second hanging structures (303) are distributed at intervals along the length direction of the sub-arm (3); The linear driving assembly (4) is used for driving the auxiliary arm (3) to rotate relative to the connecting seat (2), a third hanging structure is arranged on the linear driving assembly (4), the linear driving assembly (4) is provided with a fixed end and a power output end, the fixed end is provided with a seventh connecting structure (401), the seventh connecting structure (401) is detachably hinged with the fourth connecting structure (203), the power output end is provided with an eighth connecting structure (402), and the eighth connecting structure (402) is detachably hinged with the sixth connecting structure (302).
  2. 2. The sub-arm pre-assembly according to claim 1, further comprising a first pin (5), a second pin (6), a third pin (7) and a fourth pin (8); The first connecting structure (101) comprises a plurality of first ear plates, wherein first pin holes (1011) are formed in the first ear plates, the second connecting structure (201) comprises a plurality of second ear plates, second pin holes are formed in the second ear plates, the third connecting structure (202) comprises a plurality of third ear plates, third pin holes (2021) are formed in the third ear plates, the fourth connecting structure (203) comprises a plurality of fourth ear plates, fourth pin holes (2031) are formed in the fourth ear plates, the fifth connecting structure (301) comprises a plurality of fifth ear plates, fifth pin holes are formed in the fifth ear plates, the sixth connecting structure (302) comprises a plurality of sixth ear plates, sixth pin holes are formed in the sixth ear plates, the seventh connecting structure (401) comprises a plurality of seventh ear plates, seventh pin holes are formed in the seventh ear plates, the eighth connecting structure (402) comprises a plurality of eighth ear plates, and eighth pin holes are formed in the eighth ear plates; The first pin shaft (5) passes through the first pin hole (1011) and the second pin hole at the same time to connect the supporting tool (1) and the connecting seat (2), the second pin shaft (6) passes through the third pin hole (2021) and the fifth pin hole at the same time to connect the connecting seat (2) and the auxiliary arm (3), the third pin shaft (7) passes through the fourth pin hole (2031) and the seventh pin hole at the same time to connect the fixed end of the linear driving assembly (4) and the connecting seat (2), and the fourth pin shaft (8) passes through the sixth pin hole and the eighth pin hole at the same time to connect the power output end of the linear driving assembly (4) and the auxiliary arm (3).
  3. 3. The sub-arm pre-assembly according to claim 2, wherein the first (101), the second (201), the third (202), the fourth (203), the fifth (301), the sixth (302), the seventh (401) and the eighth (402) connection structures are provided with at least two, each of the first (101) and the second (201) connection structures being detachably hinged with each of the first (101) and the second (201) connection structures being in one-to-one correspondence, each of the third (202) and the fifth (301) connection structures being detachably hinged with each of the third (202) and the fifth (301) connection structures being in one-to-one correspondence, each of the fourth (203) and the seventh (401) connection structures being detachably hinged with each of the seventh (401) connection structures being in one-to-one correspondence, each of the fourth (203) and the eighth (302) connection structures being in one-to-one correspondence, each of the fourth (202) and the eighth (302) connection structures being in one-to-one correspondence.
  4. 4. The auxiliary arm preassembly assembly according to claim 2, wherein the supporting tool (1) is provided with a limiting pin shaft (9), the limiting pin shaft (9) is located below the first connecting structure (101), the axis of the limiting pin shaft (9) is parallel to the hinging axis of the connecting seat (2) and the supporting tool (1), the connecting seat (2) is provided with a clamping fork (205), the clamping fork (205) is provided with a clamping groove (2051), and the clamping groove (2051) is matched with the limiting pin shaft (9) in a clamping mode.
  5. 5. The sub-arm pre-assembly according to claim 4, wherein the clamping groove (2051) is an arc-shaped groove, and an opening width of the clamping groove (2051) is smaller than an inner diameter of the clamping groove (2051).
  6. 6. The sub-arm pre-assembly according to claim 2, wherein the support tooling (1) comprises: A base plate (103) for supporting on the ground; the vertical plate (104) is vertically arranged on the bottom plate (103), and the first connecting structure (101) is arranged on the vertical plate (104).
  7. 7. The sub-arm pre-assembly according to claim 6, wherein a plurality of reinforcing ribs (105) are provided between the base plate (103) and the riser (104).
  8. 8. The sub-arm pre-assembly according to claim 2, further comprising a bottom support (10), in the length direction of the sub-arm (3), the bottom support (10) being located between the sixth connection structure (302) and an end of the sub-arm (3) facing away from the connection socket (2), the sub-arm (3) abutting against the bottom support (10).
  9. 9. The sub-arm pre-assembly according to any one of claims 2 to 8, wherein the end of the sub-arm (3) remote from the connection seat (2) is provided with a support wheel (11), the support wheel (11) being rotatably arranged on the sub-arm (3), the support wheel (11) having a lower surface protruding at least partially from the sub-arm (3).
  10. 10. A method of assembling a sub-arm, for use with the sub-arm pre-assembly of any one of claims 2 to 9, comprising the steps of: S1, hoisting the connecting seat (2) to the supporting tool (1), enabling the second pin hole to be aligned with the first pin hole (1011), and enabling the first pin shaft (5) to pass through the first pin hole (1011) and the second pin hole; s2, hoisting the auxiliary arm (3) to the connecting seat (2), enabling the fifth pin hole to be aligned with the third pin hole (2021), and enabling the second pin shaft (6) to penetrate through the fifth pin hole and the third pin hole (2021); S3, hoisting the linear driving assembly (4) to the connecting seat (2), enabling the seventh pin hole to be aligned with the fourth pin hole (2031), and enabling the third pin shaft (7) to pass through the seventh pin hole and the fourth pin hole (2031); And S4, starting the linear driving assembly (4), lifting the power output end of the linear driving assembly (4) to align the eighth pin hole with the sixth pin hole, and then enabling the fourth pin shaft (8) to pass through the eighth pin hole and the sixth pin hole.

Description

Auxiliary arm preassembling assembly and auxiliary arm assembling method Technical Field The invention relates to the technical field of engineering machinery, in particular to a sub-arm preassembly assembly and a sub-arm assembly method. Background As an important engineering machine, the crane is widely applied to various construction occasions. In order to meet the requirement of overhead ultra-long distance or ultra-high hoisting operation, a crane is generally additionally provided with an auxiliary arm structure on the basis of a main arm. The auxiliary arm has the advantages of compact volume in the folded state, flexible length adjustment in the working state and the like, and is widely applied to large-tonnage cranes. The secondary arm is typically required to be assembled with the adapter and drive mechanism and then integrally mounted to the main arm head of the crane. Currently, the on-site assembly operation of the auxiliary arm mainly relies on manual cooperation to complete the alignment and connection between the components. This conventional assembly method has a number of inconveniences in practical operation. The adapter section is used as a key component for connecting the main arm and the auxiliary arm, and the structure of the adapter section is generally irregularly shaped in order to meet the requirements of stress and hinge point arrangement. In the assembly process, the switching section needs to be supported temporarily by manpower. The temporary support mode has poor stability and has great potential safety hazard. When the auxiliary arm is hinged with the switching section, the coaxiality of the hinge points of the auxiliary arm and the switching section is required to be ensured. However, due to the influence of the dead weight of the auxiliary arm, the auxiliary arm body is easy to generate position deviation in an unfixed state, so that the hinge point on the auxiliary arm body and the hinge point on the switching section are difficult to naturally align. The problem of dislocation of the hinge points caused by the self weight of the structure and unstable support is caused, so that the connection operation is extremely difficult, the position of the auxiliary arm is often required to be adjusted manually and repeatedly, and even the auxiliary arm is forcedly corrected by means of tools such as a crowbar, so that the auxiliary arm is time-consuming and labor-consuming, and the hinge points are easy to damage. The problems are solved, so that the on-site assembly operation of the auxiliary arm depends on repeated adjustment of manual experience for a long time, the assembly is very difficult, the labor intensity is high, and the efficiency is low. Disclosure of Invention Aiming at the problems that the on-site assembly operation of the auxiliary arm depends on manual repeated adjustment, is difficult to assemble, has high labor intensity and low efficiency in the prior art, the invention provides the auxiliary arm preassembly assembly and the auxiliary arm assembly method, which can simplify the operation flow and improve the assembly efficiency. The invention provides a sub-arm preassembly assembly, which comprises a supporting tool, a connecting seat, a linear driving assembly and a power output end, wherein the supporting tool is used for being supported on the ground, a first connecting structure is arranged on the supporting tool, a second connecting structure, a third connecting structure, a fourth connecting structure and a first hanging structure are arranged on the connecting seat, the second connecting structure is detachably connected with the first connecting structure, a fifth connecting structure, a sixth connecting structure and a plurality of second hanging structures are arranged on the auxiliary arm, the fifth connecting structure is located at one end of the auxiliary arm and detachably hinged with the third connecting structure, the second hanging structures are distributed at intervals along the length direction of the auxiliary arm, the linear driving assembly is used for driving the auxiliary arm to rotate relative to the connecting seat, the third hanging structure is arranged on the linear driving assembly, the linear driving assembly is provided with a fixed end and a power output end, the fixed end is provided with a seventh connecting structure which is detachably hinged with the fourth connecting structure, and the power output end is provided with an eighth connecting structure which is detachably hinged with the eighth connecting structure. The first hanging structure, the second hanging structure and the third hanging structure are all used for hooking and matching with a lifting appliance of the lifting equipment. When the auxiliary arm preassembly assembly is assembled, firstly, a supporting tool is placed on the ground, a connecting seat is hoisted to the supporting tool through hoisting equipment, a second connecting structure is connected w