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CN-224223091-U - Auxiliary positioning device for welding main beam of crane

CN224223091UCN 224223091 UCN224223091 UCN 224223091UCN-224223091-U

Abstract

The utility model discloses an auxiliary positioning device for welding a crane girder, and relates to the technical field of welding of crane girders. The utility model comprises a bottom plate, wherein the top of the bottom plate is fixedly connected with a lower positioning plate, the top of the lower positioning plate is provided with an upper positioning plate, the top of the bottom plate is provided with a moving assembly, and the moving assembly comprises a box body fixedly connected to the front side of the lower positioning plate. According to the utility model, the motor drives the conveying wheel to carry out friction transmission with the main beam, so that automatic translation of the main beam is realized, the limit wheel and the guide rod are matched for stable guiding, multi-position welding can be completed without repeated disassembly and assembly, the movable frame, the second cylinder and the third cylinder are in linkage design, accurate lifting of the upper positioning plate is realized, the clamping requirements of welding workpieces with different thicknesses are met, the welding heat is quickly conducted into cooling liquid in the upper positioning plate by the heat conducting column, the temperature sensor is combined for real-time monitoring, the alarm is triggered when the temperature exceeds the preset temperature, heat dissipation lag caused by failure of the cooling liquid is avoided, and the thermal deformation risk of the workpiece is reduced.

Inventors

  • WANG MENG
  • WANG KAICHEN
  • LU ZIXIN
  • XIE JIAXIANG

Assignees

  • 河南巨人起重机集团有限公司

Dates

Publication Date
20260512
Application Date
20250513

Claims (7)

  1. 1. An auxiliary positioning device for welding a crane girder comprises a bottom plate (1) and is characterized in that the top of the bottom plate (1) is fixedly connected with a lower positioning plate (2), and the top of the lower positioning plate (2) is provided with an upper positioning plate (3); The top of the bottom plate (1) is provided with a moving assembly, the moving assembly comprises a box body (4) fixedly connected to the front side of the lower positioning plate (2), a motor (5) fixedly connected to one side inside the box body (4), and a conveying wheel (6) movably connected with one side of the lower positioning plate (2), and the moving assembly drives a crane girder to move; The top of the lower locating plate (2) is provided with a heat conduction assembly, the heat conduction assembly comprises a heat conduction column (7) fixedly connected to the bottom of the upper locating plate (3), a temperature detection sensor (8) and an alarm (9) are fixedly connected to the top of the upper locating plate (3), and the welding part is rapidly cooled through the heat conduction assembly.
  2. 2. The auxiliary positioning device for welding the main beam of the crane of claim 1, wherein the moving assembly further comprises a first air cylinder (10) fixedly connected to the top of the lower positioning plate (2), a supporting plate (11) fixedly connected to the output end of the first air cylinder (10), and a limiting wheel (12) movably connected to one side of the supporting plate (11).
  3. 3. The auxiliary positioning device for welding the main beam of the crane, as set forth in claim 1, is characterized in that a bracket (13) is fixedly connected to the rear side of the lower positioning plate (2), and a second cylinder (14) is fixedly connected to the front side of the bracket (13).
  4. 4. The auxiliary positioning device for welding the main beam of the crane, as set forth in claim 3, is characterized in that the output end of the second cylinder (14) is fixedly connected with a movable frame (15), and the bottom of the movable frame (15) is fixedly connected with a third cylinder (16).
  5. 5. The auxiliary positioning device for welding the main beam of the crane, as set forth in claim 1, is characterized in that the top of the bottom plate (1) is provided with a mounting hole, and the auxiliary positioning device is fixed by mounting Kong Duizheng devices.
  6. 6. The auxiliary positioning device for welding the main beam of the crane, as set forth in claim 1, is characterized in that the top of the lower positioning plate (2) is fixedly connected with a guide rod, and the output end of the motor (5) is fixedly connected with the conveying wheel (6).
  7. 7. The auxiliary positioning device for welding the main beam of the crane according to claim 3, wherein a guide rod is arranged at the top of the second cylinder (14), and the guide rod is fixedly connected with the bracket (13).

Description

Auxiliary positioning device for welding main beam of crane Technical Field The utility model belongs to the technical field of crane girder welding, and particularly relates to an auxiliary positioning device for crane girder welding. Background The main girder of the crane is one of key components in the structure of the crane and is responsible for bearing the main load of the crane and supporting the lifting, hoisting and movement functions of the crane. The main beam of the crane is usually made of steel or other high-strength materials, and needs to be welded with other parts in the production and processing process, so that an auxiliary positioning device is used in welding in order to ensure the accuracy, stability and welding quality of the welding process. The prior auxiliary positioning device has the defects that (1) the positioning flexibility is poor, when the main beam is subjected to multi-station welding, the main beam is required to be frequently disassembled or a plurality of devices are required to be used, the efficiency is low, positioning errors are easy to introduce, (2) the thermal deformation control is insufficient, the workpiece is easy to deform locally due to high welding temperature, the prior device lacks an active heat dissipation means, the welding seam forming precision is affected, and (3) the automation degree is low, the position adjustment of the main beam depends on manual operation, the moving stability is difficult to ensure, and the labor intensity is increased. Therefore, we provide an auxiliary positioning device for welding the main beam of the crane, which is used for solving the problems. Disclosure of utility model The utility model aims to provide an auxiliary positioning device for welding a crane girder, which solves the problems that most auxiliary positioning devices in the prior art are fixedly connected, the requirement of welding multiple parts of girders cannot be met, heat during welding cannot be treated in time, and a welding workpiece is deformed by heating through the cooperation of a moving assembly and a heat conducting assembly. In order to solve the technical problems, the utility model is realized by the following technical scheme. The utility model relates to an auxiliary positioning device for welding a crane girder, which comprises a bottom plate, wherein the top of the bottom plate is fixedly connected with a lower positioning plate, the top of the lower positioning plate is provided with an upper positioning plate, the top of the bottom plate is provided with a moving assembly, the moving assembly comprises a box body fixedly connected to the front side of the lower positioning plate, a motor fixedly connected to one side of the box body, a conveying wheel movably connected with one side of the lower positioning plate and used for driving the crane girder to move, the top of the lower positioning plate is provided with a heat conducting assembly, the heat conducting assembly comprises a heat conducting column fixedly connected to the bottom of the upper positioning plate, a temperature detection sensor and an alarm fixedly connected to the top of the upper positioning plate, and the welding member is rapidly cooled through the heat conducting assembly. The utility model is further arranged that the moving assembly further comprises a first air cylinder fixedly connected to the top of the lower positioning plate, a supporting plate fixedly connected to the output end of the first air cylinder, and a limiting wheel movably connected to one side of the supporting plate. The utility model is further characterized in that the rear side of the lower locating plate is fixedly connected with a bracket, and the front side of the bracket is fixedly connected with a second cylinder. The utility model is further characterized in that the output end of the second cylinder is fixedly connected with a movable frame, and the bottom of the movable frame is fixedly connected with a third cylinder. The utility model is further arranged that the top of the bottom plate is provided with a mounting hole, and the bottom plate is fixed by a mounting Kong Duizheng device. The utility model is further characterized in that the top of the lower positioning plate is fixedly connected with a guide rod, and the output end of the motor is fixedly connected with the conveying wheel. The utility model further provides that the top of the second cylinder is provided with a guide rod, and the guide rod is fixedly connected with the bracket. The utility model has the following beneficial effects. 1. According to the utility model, the motor drives the conveying wheel to carry out friction transmission with the main beam, so that automatic translation of the main beam is realized, the limit wheel and the guide rod are matched for stable guiding, multi-position welding can be completed without repeated disassembly and assembly, the movable frame, the second cylinder and th