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CN-224209390-U - Crane girder tilting mechanism

CN224209390UCN 224209390 UCN224209390 UCN 224209390UCN-224209390-U

Abstract

The utility model belongs to the field of cranes, in particular to a crane girder overturning mechanism, which aims at solving the problem that existing crane girders which need to rotate two sides respectively are easy to be asynchronous; the four support barrels are sleeved on two sides of the surface of the crane girder respectively, so that the support barrels can drive the left part and the right part of the crane girder to rotate stably and synchronously, the difference of rotation speeds of the support barrels is avoided, and the welding part can be prevented from being torn due to different rotation speeds.

Inventors

  • Jia Lurui
  • WU NAN

Assignees

  • 山东泰沃重工有限公司

Dates

Publication Date
20260508
Application Date
20250606

Claims (6)

  1. 1. A crane girder tilting mechanism, characterized by including A base (1); the four support seats (2) are arranged, and the four support seats (2) are connected to the top of the base (1) through bolts; The crane girder overturning assembly comprises four crane girder overturning assemblies, wherein each crane girder overturning assembly comprises a supporting cylinder (3), an electric pushing cylinder (4) and clamping plates (5), the surfaces of the supporting cylinders (3) are rotatably sleeved with the inside of the supporting seat (2), the electric pushing cylinders (4) and the clamping plates (5) are six, the surfaces of the six electric pushing cylinders (4) are respectively connected with six holes of the supporting cylinders (3) through bolts, and the output ends of the electric pushing cylinders (4) are connected with the surfaces of the clamping plates (5) through bolts; The four turning assemblies are arranged, each turning assembly comprises a large rotating wheel (11), a driving belt (12), a small rotating wheel (13), a driving gear (14) and a gear ring (15), the inside of the large rotating wheel (11) is in transmission connection with the inner side of the driving belt (12), the top end of the inside of the driving belt (12) is in transmission connection with the inner side of the small rotating wheel (13), the shaft center of the small rotating wheel (13) is connected with the left side key of the driving gear (14), the gear ring (15) is arranged on the surface of the supporting cylinder (3), and teeth of the driving gear (14) are meshed with teeth of the gear ring (15); The power mechanism is connected with the four large rotating wheels (11).
  2. 2. The crane girder turnover mechanism according to claim 1, wherein the power mechanism comprises an electric cylinder (6), a slide bar (7), a hinge rod (8) and a transmission assembly, the output end of the electric cylinder (6) is connected with the top end of the slide bar (7) through bolts, the bottom end of the slide bar (7) is hinged with the top end of the hinge rod (8), and the hinge rod (8) is hinged with the transmission assembly.
  3. 3. The crane girder turnover mechanism according to claim 2, wherein the transmission assembly comprises a transmission frame (9) and a rotating shaft (10), the bottom end of the hinged rod (8) is hinged with a hole of the transmission frame (9), one end of the transmission frame (9) far away from the hinged rod (8) is connected with the right end key of the rotating shaft (10), and the axle centers of the four large rotating wheels (11) are connected with the surface keys of the rotating shaft (10).
  4. 4. The crane girder turnover mechanism according to claim 2, wherein the surface of the electric cylinder (6) is in bolt connection with the right support seat (2), the surface of the sliding bar (7) is in sliding connection with the right support seat (2), and the rotating shafts (10) are in rotary sleeving connection with the four support seats (2).
  5. 5. A crane girder tilting mechanism according to claim 3, wherein the middle end of the top of the base (1) is provided with a collecting frame (16), and the collecting frame (16) is located at the bottom of the rotating shaft (10).
  6. 6. The crane girder turnover mechanism according to claim 1, wherein the axle center of the large rotating wheel (11) is rotatably connected with the left side of the supporting seat (2), and the axle center of the transmission gear (14) is rotatably connected with the left side of the supporting seat (2).

Description

Crane girder tilting mechanism Technical Field The utility model relates to the technical field of cranes, in particular to a crane girder turnover mechanism. Background In the manufacturing process of the crane girder, in order to ensure the quality of welding seams, the crane girder needs to be overturned for a plurality of times so that the position to be welded is in a flat welding position, and a crane girder overturning mechanism is needed to be used, and the Chinese patent document with the publication number of CN118479357A discloses a crane girder overturning mechanism. However, according to the technical scheme, the crane girders on two sides are required to be rotated respectively and then welded, so that the two crane girders are easily asynchronous in transmission, and the welding stability of the crane girders is affected. Disclosure of utility model The utility model aims to solve the defect that in the prior art, crane girders on two sides need to be rotated respectively and are easy to be out of sync. In order to achieve the above purpose, the present utility model adopts the following technical scheme: a crane girder tilting mechanism comprises A base; The four support seats are connected to the top of the base through bolts; The four crane girder overturning assemblies are arranged, each crane girder overturning assembly comprises a supporting cylinder, an electric pushing cylinder and clamping plates, the surfaces of the supporting cylinders are rotatably sleeved with the inside of the supporting seat, the number of the electric pushing cylinders and the number of the clamping plates are six, the surfaces of the six electric pushing cylinders are respectively connected with six holes of the supporting cylinders through bolts, and the output ends of the electric pushing cylinders are connected with the surface bolts of the clamping plates; The turning assembly is provided with four turning assemblies, each turning assembly comprises a large rotating wheel, a driving belt, a small rotating wheel, a driving gear and a gear ring, the inside of the large rotating wheel is in transmission connection with the inner side of the driving belt, the top end of the inside of the driving belt is in transmission connection with the inner side of the small rotating wheel, the shaft center of the small rotating wheel is in key connection with the left side of the driving gear, the gear ring is arranged on the surface of the supporting cylinder, and teeth of the driving gear are meshed with teeth of the gear ring; the power mechanism is connected with the four large rotating wheels, the power mechanism can synchronously drive the four supporting cylinders to rotate through the transmission of the structure, and the four supporting cylinders are respectively sleeved on two sides of the surface of the main beam of the crane, so that the supporting cylinders can drive the left part and the right part of the main beam of the crane to stably and synchronously rotate, the difference of the rotating speeds of the supporting cylinders is avoided, and the welding parts can be prevented from being torn due to the difference of the rotating speeds. As a preferable scheme of the utility model, the power mechanism comprises an electric cylinder, a slide bar, a hinging rod and a transmission assembly, wherein the output end of the electric cylinder is connected with the top end of the slide bar through a bolt, the bottom end of the slide bar is hinged with the top end of the hinging rod, the hinging rod is hinged with the transmission assembly, the power supply of the electric cylinder is connected, the electric cylinder is controlled by the controller, the electric cylinder can drive the slide bar to move upwards, the slide bar can drive the hinging rod to move upwards, and the hinging rod can drive the transmission assembly to rotate. As a preferable scheme of the utility model, the transmission assembly comprises a transmission frame and a rotating shaft, the bottom end of the hinge rod is hinged with a hole of the transmission frame, one end of the transmission frame, which is far away from the hinge rod, is connected with the right end key of the rotating shaft, the axle centers of the four large rotating wheels are connected with the surface keys of the rotating shaft, the hinge rod can drive the transmission frame to rotate upwards, the transmission frame can drive the rotating shaft to rotate, and the rotating shaft can drive the four large rotating wheels to rotate. As a preferable scheme of the utility model, the surface of the electric cylinder is connected with the right supporting seat through bolts, the surface of the sliding bar is connected with the right supporting seat in a sliding way, the rotating shafts are rotatably sleeved with the four supporting seats, the electric cylinder is fixed by the supporting seats, the electric cylinder can be ensured to stably drive the sliding bar to move, the slidin