Development machine and floating sealing device thereof

Abstract

The invention discloses a floating sealing device for a development machine, which comprises a first connection base (2) arranged on a rotary main shaft (1) of the development machine and a second connection base (4) arranged on a protective shell (3) of the development machine, wherein the first connection base (2) and the second connection base (4) have preset distance in the axial direction ofthe rotary main shaft (1); and the first connection base (2) is movably connected with the rotary main shaft (1) in the axial direction of the rotary main shaft (1). The floating sealing device overcomes the defect of error caused by mismachining tolerance, of the axial distance of the two connection bases, improves the operational performance, and simultaneously, reduces the requirements on machining and assembly of parts of the floating sealing device, so the machining cost is reduced. The invention also discloses the development machine with the floating sealing device.

Description

technical field [0001] The invention relates to the technical field of coal mining equipment, in particular to a floating sealing device for a roadheader. The invention also relates to a roadheader comprising the above-mentioned floating sealing device. Background technique [0002] With the rapid development of my country's economic construction, the coal industry continues to develop in the direction of mechanization and automation, and comprehensive mechanized coal mining equipment is more and more widely used in coal production under various geological conditions. [0003] In the operation of mechanized coal mining, the roadheader is one of the main mining equipment, and the excavation of the roadway is realized through the rotary cutting of the cutting head. The roadheader mainly includes a cutting head for excavating the roadway. The cutting head is an important part of the cutting part of the roadheader. The cutting part also includes a rotating main shaft. The cutti...

AI Technical Summary

Problems solved by technology

During the working process of the floating sealing device, the requirements for the axial distance between the first connecting seat and the second connecting seat are relatively strict. If the axial distance is too large, the sealing effect will be affected. Due to the high frictional force, it will seriously affect the service life of the floating sealing device; at present, the distance between the first connecting seat and the second connecting seat is generally controlled to ensure the distance between the two, however, the first connecting seat and the second connecting seat During the processing of the connection seat and the assembly process of the two, errors are unavoidable. In the process of processing and assembly, the errors caused by each process will accumulate, resulting in the first connection seat and the second connection after the assembly is completed. The error between the connecting seats is large, which affects the axial distance between the two; moreover, the above-mentioned method of forming the axial distance has strict requirements on the processing and assembly process of the parts, and the processing cost is relatively high

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