CN201924925U - Box body structure of single-roller off-pan shearer - Google Patents

Abstract

The utility model discloses a box body structure of a single-roller off-pan shearer, which comprises a bottom supporting plate assembly, a traction part box body and a cutting part box body, wherein the traction part box body and the cutting part box body are fixed on the bottom supporting plate assembly and are positioned at both sides of an electric motor; and both front and rear sides of the two box bodies are connected by two or more stud bolts. The box body structure is characterized in that one end of each stud bolt is provided with a nut and the other end of the stud bolt is provided with a hydraulic nut. The box body structure has the advantages of small height size and high connection reliability and is convenient to operate. The exploitable mining height range of the shearer is improved.

Description

The body structure of single cylinder off pan shearer

Technical field

The utility model relates to a kind of body structure of single cylinder off pan shearer.

Background technology

China's girdle resource distribution is wide, ature of coal good, but because its working seam thin thickness, the height dimension of coal-winning machine is had comparatively responsive, and its height dimension is the smaller the better; The single cylinder off pan shearer that is used for girdle at present, its casing comprises the backing board assembly, be fixed on the backing board assembly and be positioned at the tractive unit casing and the cutting units casing of motor both sides, the forward and backward side of described two tanks all links to each other by the stud more than two or two, nut all is equipped with at the two ends of every stud, connects two tanks by several studs; Because the locking of every stud one end nut and unclamp and to finish in the down-hole, therefore on tractive unit casing or cutting units casing, need to reserve the operating space of spanner, the height dimension of coal-winning machine is increased, reduced the mining height the adopted scope of coal-winning machine, and the locking of plain nut and unclamp operation be difficulty comparatively, each is bolt strained inhomogeneous, and the reliability of connection is lower.

The utility model content

The purpose of this utility model is the above-mentioned deficiency at prior art, and a kind of body structure of single cylinder off pan shearer is provided, and it has the advantage that height dimension is less, easy to operate, connection reliability is good, has improved the mining height the adopted scope of coal-winning machine.

For achieving the above object, the body structure of single cylinder off pan shearer of the present utility model, comprise the backing board assembly, be fixed on the backing board assembly and be positioned at the tractive unit casing and the cutting units casing of motor both sides, the forward and backward side of described two tanks all links to each other by the stud more than two or two, an end that it is characterized in that described every stud is equipped with nut, and the other end is equipped with hydraulic nut.

The utility model need not be reserved the operating space of spanner owing to the end at every stud adopts hydraulic nut when two tanks connects, make the height dimension of coal-winning machine reduce greatly, has improved the mining height the adopted scope of coal-winning machine; Owing to can act on simultaneously a plurality of hydraulic nuts by hydraulic jack, a plurality of bolts are carried out synchro-draw, not only easy to operate, and each is bolt strained evenly, good reliability of connection.

In sum, the utlity model has the advantage that height dimension is less, easy to operate, connection reliability is good, improved the mining height the adopted scope of coal-winning machine.

Description of drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is the vertical view of Fig. 1.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further described.

By Fig. 1, shown in Figure 2, the body structure of this list cylinder off pan shearer, comprise backing board assembly 1, be fixed on the backing board assembly 1 and be positioned at the tractive unit casing 3 and the cutting units casing 4 of motor 2 both sides, described two tanks 3 all links to each other by two studs 5 with 4 forward and backward side, one end of described every stud 5 is equipped with nut 6, and the other end is equipped with hydraulic nut 7.

The operating principle of hydraulic nut is to utilize hydraulic jack directly bolt to be applied external force, makes bolt be elongated in its elastic deformation area, screws the retainer on the hydraulic nut after bolt is elongated, and bolt will be locked on the position of elongation by retainer like this; The utility model is owing to adopt hydraulic nut 7 at an end of every stud, need not reserve the operating space of spanner when 4 are connected at two tanks 3, makes the height dimension of coal-winning machine reduce greatly, improved the mining height the adopted scope of coal-winning machine; Owing to can act on simultaneously a plurality of hydraulic nuts 7 by hydraulic jack during locking, four bolts 5 are carried out synchro-draw, not only easy to operate, and each bolt 5 is stressed even, good reliability of connection.

Claims (1)

1. the body structure of a single cylinder off pan shearer, comprise the backing board assembly, be fixed on the backing board assembly and be positioned at the tractive unit casing and the cutting units casing of motor both sides, the forward and backward side of described two tanks all links to each other by the stud more than two or two, an end that it is characterized in that described every stud is equipped with nut, and the other end is equipped with hydraulic nut.

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