CN-121990066-A - Detachable drag chain wheel fixing seat and walking frame for large excavator

CN121990066ACN 121990066 ACN121990066 ACN 121990066ACN-121990066-A

Abstract

The invention discloses a detachable drag chain wheel fixing seat and a walking frame for a large excavator, wherein the detachable drag chain wheel fixing seat comprises a plate body and two support bodies, the two support bodies are arranged in parallel and symmetrically welded on the upper end face of the plate body, the plate body is provided with a walking frame connecting hole, the upper end of the support body is provided with a wheel shaft seat connecting hole, the plate body is connected with the plate body connecting hole on a walking frame welding piece through the walking frame connecting hole and a first connecting piece, the wheel shaft seat connecting hole of the support body is connected with a wheel shaft seat through a second connecting piece, a wheel shaft is arranged in the wheel shaft seat, and a drag chain wheel is arranged between the two support bodies through the wheel shaft. The detachable drag chain wheel fixing seat is convenient to install and detach and convenient to maintain, and once the detachable drag chain wheel fixing seat is damaged, the detachable drag chain wheel fixing seat can be maintained or manufactured again according to the damage degree.

Inventors

WANG XUQIAO
PANG CHAOLI
WU QULAN
LI XIANG
GAO JUNKAI
LI SHENGQIANG

Assignees

力士德工程机械股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260306

Claims (7)

1. The detachable drag chain wheel fixing seat for the large excavator is characterized by comprising a plate body and a support body; The two supports are welded on the upper end face of the plate body in parallel and symmetrically, the plate body is provided with a walking frame connecting hole, and the upper end of the support is provided with a wheel shaft seat connecting hole; the plate body is connected with the plate body connecting hole on the walking frame welding piece through the walking frame connecting hole and the first connecting piece; the wheel shaft seat connecting holes of the supporting bodies are connected with the wheel shaft seat through second connecting pieces, a wheel shaft is arranged in the wheel shaft seat, and a towing wheel is arranged between the two supporting bodies by the wheel shaft.
2. The detachable drag chain wheel fixing seat for the large excavator according to claim 1, wherein the lower end face of the plate body is provided with a trapezoid groove, the trapezoid groove is in the same direction as the support body, and the walking frame connecting holes are arranged on two sides of the trapezoid groove.
3. A walking frame comprising a walking frame welding piece, which is characterized in that the upper end of the walking frame welding piece is provided with three detachable drag chain wheel fixing seats according to claim 1 along the trend of the walking frame welding piece; The detachable drag chain wheel fixing seat at the middle part is higher than the detachable drag chain wheel fixing seats at the two sides.
4. A walking frame as defined in claim 3, wherein three sets of plate body connecting holes are formed in the upper portion of the walking frame welding member for mounting a detachable drag chain wheel fixing seat, And the parts of the optimized left walking frame welding piece, on which the detachable drag chain wheel fixing seat is arranged, are respectively subjected to plane milling.
5. The walking frame of claim 4, wherein the first connecting member comprises a thickened washer and a first bolt, the first bolt passes through the thickened washer, the walking frame connecting hole and the plate connecting hole, the plate connecting hole is a threaded hole, and the first bolt is in threaded fit locking with the plate connecting hole.
6. The walking frame of claim 5, wherein the plate body and the support body are made of Q355D, the thickened gasket is made of carbon steel 45#, the first bolt material is made of alloy steel 35CrMo, and the surfaces of the thickened gasket and the first bolt are processed by Dacromet.
7. The walking frame according to claim 3, wherein the second connecting piece comprises a second bolt and a second gasket, the second bolt penetrates through the second gasket, a mounting hole of the wheel axle seat and a wheel axle seat connecting hole, the wheel axle seat connecting hole is a threaded hole, and the second bolt is in threaded fit locking with the wheel axle seat connecting hole.

Description

Detachable drag chain wheel fixing seat and walking frame for large excavator Technical Field The invention relates to the technical field of engineering machinery, in particular to a detachable drag chain wheel fixing seat and a walking frame for a large excavator. Background The conventional excavator drag chain fixing seat structure is convenient to manufacture, the precision is easy to control, and the manufacturing cost is low. For the existing structure form of the drag chain wheel fixing seat of the oversized excavator, the precision is not easy to control, the processing cost is high, and the maintenance is inconvenient. Based on the ultra-large excavator drag chain wheel fixing seat, the precision is not easy to control, the processing cost is high, the maintenance is inconvenient, and the actual situation of the service life and the operation efficiency of the excavator is directly affected. The invention innovatively designs the detachable drag chain wheel fixing seat, which is convenient to manufacture, easy to process and control the shape, position and dimensional tolerance precision, easy to assemble and maintain, stable in service performance and capable of achieving the purpose of prolonging the service life and improving the operation efficiency of the whole machine. Disclosure of Invention In order to overcome the defects of the prior art and solve at least one technical problem in the background art, the invention provides a detachable drag chain wheel fixing seat and a walking frame for a large excavator. In order to achieve the above purpose, the present invention adopts the following technical scheme: On one hand, the invention provides a detachable drag chain wheel fixing seat for a large excavator, which comprises a plate body and a support body; The two supports are welded on the upper end face of the plate body in parallel and symmetrically, the plate body is provided with a walking frame connecting hole, and the upper end of the support is provided with a wheel shaft seat connecting hole; the plate body is connected with the plate body connecting hole on the walking frame welding piece through the walking frame connecting hole and the first connecting piece; the wheel shaft seat connecting holes of the supporting bodies are connected with the wheel shaft seat through second connecting pieces, a wheel shaft is arranged in the wheel shaft seat, and a towing wheel is arranged between the two supporting bodies by the wheel shaft. Further, the lower end face of the plate body is provided with a trapezoid groove, the trend of the trapezoid groove is in the same direction as that of the support body, and the connecting holes of the walking frame are positioned on two sides of the trapezoid groove. The invention provides a walking frame, which comprises a walking frame welding piece and is characterized in that the upper end of the walking frame welding piece is provided with three detachable drag chain wheel fixing seats along the trend of the walking frame welding piece; The detachable drag chain wheel fixing seat at the middle part is higher than the detachable drag chain wheel fixing seats at the two sides. Further, three groups of plate body connecting holes are processed at the upper part of the walking frame welding piece and are used for installing a detachable drag chain wheel fixing seat, And the parts of the optimized left walking frame welding piece, on which the detachable drag chain wheel fixing seat is arranged, are respectively subjected to plane milling. Further, the first connecting piece comprises a thickened washer and a first bolt, the first bolt penetrates through the thickened washer, the walking frame connecting hole and the plate body connecting hole, the plate body connecting hole is a threaded hole, and the first bolt is in threaded fit locking with the plate body connecting hole. Further, the plate body and the support body are made of Q355D, the thickened gasket is made of carbon steel 45#, the first bolt material is made of alloy steel 35CrMo, and the surfaces of the thickened gasket and the first bolt are treated by Dacromet. Further, the second connecting piece comprises a second bolt and a second gasket, the second bolt penetrates through the second gasket, the mounting hole of the wheel axle seat and the wheel axle seat connecting hole, the wheel axle seat connecting hole is a threaded hole, and the second bolt is in threaded fit locking with the wheel axle seat connecting hole. Compared with the prior art, the invention has the following beneficial effects: The detachable drag chain wheel fixing seat structure solves a series of related problems of the fixing seat structure used for the drag chain wheel of the oversized excavator, and the quality, the service life and the operation efficiency of the whole excavator are all improved in a crossing mode. (1) The optimized walking frame welding piece is connected with the threaded hole and the mounting surf