CN201771531U - Push rod adjusting jack for inclined and steeply inclined fully mechanized mining hydraulic bracket - Google Patents

Abstract

The utility model discloses a push rod adjusting jack for an inclined and steeply inclined fully mechanized mining hydraulic bracket. The jack comprises a piston rod, a cylinder body and a pin shaft which are connected with a base of the hydraulic bracket, wherein the base has a hexahedral box structure and is provided with a cylinder body installation hole and a piston rod installation hole which are coaxial with each other; a sealing ring is arranged between the piston rod and the piston rod installation hole; the piston rod is hinged with the base at the outer end of the piston rod through the pin shaft; a dust-proof sealing ring is arranged between the cylinder body installation hole and the cylinder body; the cylinder body moves in the cylinder body installation body in a stretching way; a cylinder body bottom pad is movably connected to the front end of the cylinder body; the front end of the cylinder body bottom pad is connected with a push rod of the hydraulic bracket; and an outer cylinder sleeve is fixedly connected with the cylinder body bottom pad, extends from the front end of the cylinder body to the back end of the cylinder body outside the cylinder body and is in sliding fit with the cylinder body installation hole. The jack has the advantages that: the jack has a simple structure, long service life and low coal mining production cost, is convenient to maintain and does not need integrally replacing.

Description

Push rod jack for inclined and steep fully mechanized mining hydraulic supports

Technical field The utility model relates to a fully mechanized mining support equipment component in the coal mining industry, in particular to a push rod jack used for inclined and steeply inclined fully mechanized mining hydraulic supports. the

Background technology In the coal mining industry, the inclination angle of the coal seam is usually divided into gently inclined coal seam, inclined coal seam and steeply inclined coal seam according to the inclination angle of the coal seam. A coal seam with an inclination angle below 25° is a gently inclined coal seam, and a coal seam with a dip angle greater than 45° is a steeply inclined coal seam. In the coal mining face, the hydraulic supports and conveyors belonging to the fully mechanized mining equipment are arranged along the direction of the inclination angle of the coal seam, forming a corresponding inclination angle with the horizontal plane. The bigger it is, the more serious the problem is. The push rod is a connection device connecting the hydraulic support and the conveyor. The push rod is connected to the base of the hydraulic support through a hydraulic cylinder. There are push rod adjustment jacks on both sides of the push rod to adjust and limit the offset position of the push rod. Through The push rod jack adjustment realizes the control of the sliding amount of the conveyor. At present, the push rod jack is fixed on the hydraulic support base by two pin shafts through the piston rod, and the bottom of the cylinder block is pushed against the push rod side. During the working process, the push rod is affected by the downward trend of the conveyor, and exerts positive pressure and lateral force on the bottom of the jack cylinder in the extended state. The push rod and the bottom of the jack cylinder will cause friction and wear, which will easily lead to the bending of the piston rod of the jack or the bottom of the cylinder. fall off, causing damage to the jack. When the piston rod of the push rod jack in the existing structure is bent or the bottom of the cylinder falls off, it can only be replaced as a whole. At the same time, the operation is difficult. , this problem is particularly prominent. the

SUMMARY OF THE INVENTION The purpose of this utility model is to address the deficiencies of the prior art and provide a push rod jack for tilting and steeply tilting fully mechanized mining hydraulic supports with simple structure, convenient maintenance, no need for overall replacement, and low coal mining production costs . the

In order to achieve the above object, the utility model adopts the following technical solutions:

A push rod jack for tilting and steep fully mechanized mining hydraulic support, comprising a piston rod, a cylinder body, and a pin shaft connected to the base of the hydraulic support, the base includes a bottom plate fixedly connected to each other and forming a six-sided box structure, Cover plate, inner wall board, outer wall body, front and rear sealing boards, the inner wall board is provided with a cylinder body installation hole, the outer wall body is provided with a piston rod installation hole, and the cylinder body installation hole and the piston rod installation hole are coaxial; A part of the piston rod is located in the installation hole of the piston rod. The outer end of the piston rod is connected with the outer wall through a pin shaft. The cylinder moves telescopically in the installation hole of the cylinder body. There is a dustproof A sealing ring, the front end of the cylinder body is movably connected to the cylinder bottom pad, and the front end of the cylinder bottom pad is movably connected to the outside of the inner wall board and the side of the push rod of the hydraulic support. the

In the utility model adopting the above scheme, various joint connection methods, such as universal joints, hinges, etc., can be used between the bottom pad of the cylinder body and the cylinder body of the jack; relative rotation can be generated between the bottom pad of the cylinder body and the cylinder body , in the extended working state, when the bottom pad of the cylinder body is subjected to the normal pressure and lateral force reacted by the push rod, it forms a relative movement with the cylinder body together with the push rod, and the cylinder body will not be affected by this permanent bending deformation or being damaged. Wear and tear, even if the bottom gasket of the cylinder body is seriously damaged, it will not cause irreparable damage to the cylinder body, let alone the piston rod. Therefore, when the bottom gasket of the cylinder body is damaged and needs to be replaced, only the bottom of the cylinder body needs to be replaced. The cylinder body, piston rod and other parts can still be used, which not only reduces the maintenance workload and saves labor costs, but also avoids the direct property loss of replacing the cylinder body and piston rod parts, greatly reducing coal mining production costs. the

Preferably, a rotating shaft is provided at the bottom of the cylinder, the axis of the rotating shaft is perpendicular to the axis of the cylinder, the bottom pad of the cylinder is provided with a transverse through hole adapted to the shaft, and the bottom of the cylinder is rotationally connected with the bottom pad of the cylinder through the shaft and the through hole. It ensures that the bottom pad of the cylinder body is reliably connected in rotation with the cylinder body, and has a simple structure, convenient maintenance and replacement, and low manufacturing cost. the

Further preferably, an outer cylinder liner is fixedly connected to the bottom pad of the cylinder body, the outer cylinder liner extends from the front end of the cylinder body to the rear end of the cylinder body, the outer cylinder liner surrounds the outside of the cylinder body, and a There is a gap, and the outer cylinder liner is slidably fitted with the mounting hole of the cylinder block. Avoid friction and wear on the base between the cylinder and the hydraulic pressure, further ensuring a long service life of the cylinder. the

Preferably, the pin quantity is 1, and the axis of the pin axis and the axis of the piston rod are vertically intersected in the same plane, and the pin shaft is rotatably fitted in the pin shaft mounting holes provided at the corresponding positions of the piston rod and the base. A single pin shaft can realize the rotation of the piston rod around the axis of the pin shaft. In the case of a large displacement of the cylinder bottom pad, it can still ensure that the piston rod does not produce bending deformation, prolong the service life of the piston rod, and further reduce the production cost of coal mining. the

Preferably, a sealing ring is connected between the piston rod installation hole and the piston rod, and the sealing ring is located in a sealing ring groove provided on the piston rod. The sealing ring and the dust-proof sealing ring work together to avoid the influence of dust in the working environment on the working surface of the piston rod, prevent the wear and tear of the working surface of the piston rod due to dust pollution and hydraulic seal leakage, further prolong the service life of the jack and reduce coal mining production cost. the

The utility model has the beneficial effects of adjusting the push rod jack used for tilting and steeply tilting fully mechanized mining hydraulic supports, and the utility model has the advantages of simple structure, no need for integral replacement, long service life and low coal mining production cost. the

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view of the utility model in use;

Fig. 2 is a structural representation of the utility model. the

Specific embodiments The utility model will be further described below in conjunction with the accompanying drawings:

Referring to Fig. 1 and Fig. 2 for implementation, a push rod jack for inclined and steep fully mechanized mining hydraulic supports includes a piston rod 1 connected to a base 4 of the hydraulic support, a cylinder body 2, and a pin shaft 3, and the base 4 includes The bottom plate 43, the cover plate 44, the inner wall plate 45, the outer wall body 46, and the front and rear sealing plates 47 are fixedly connected with each other and form a six-sided box structure. A piston rod mounting hole 42 is provided on the cylinder block mounting hole 41 and the piston rod mounting hole 42 is coaxial; a part of the piston rod 1 is located in the piston rod mounting hole 42, and the piston rod 1 is connected to the outer end through the pin shaft 3 at its outer end. The wall 46 is connected, and the cylinder body 2 telescopically moves in the cylinder body installation hole 41. A dustproof sealing ring 411 is provided between the cylinder body installation hole 41 and the cylinder body 2, and the front end of the cylinder body 2 is movably connected with a cylinder body bottom pad 21. The front end of the cylinder bottom pad 21 is flexibly connected to the outside of the inner wall panel 45 and the side of the push rod 5 of the hydraulic support. the

The bottom of the cylinder body 2 is provided with a rotating shaft 22, the axis of the rotating shaft 22 is perpendicular to the axis of the cylinder body 2, the cylinder bottom pad 21 is provided with a transverse through hole 211 adapted to the rotating shaft 22, and the bottom of the cylinder body 2 passes through the rotating shaft 22 and the through hole. 211 is rotationally connected with cylinder bottom pad 21. the

An outer cylinder liner 212 is fixedly connected to the bottom pad 21 of the cylinder body. The outer cylinder liner 212 extends from the front end of the cylinder body 2 to the rear end of the cylinder body 2. The outer cylinder liner 212 surrounds the outside of the cylinder body 2. A gap is provided between the outer wall of the cylinder body 2 , and the outer cylinder liner 212 is slidingly fitted with the cylinder body mounting hole 41 . the

The number of the pin shaft 3 is one, and the axis of the pin shaft 3 and the axis of the piston rod 1 are vertically intersected in the same plane, and the pin shaft 3 is rotated and fitted in the mounting holes of the pin shaft 3 provided at the corresponding positions of the piston rod 1 and the base 4 . the

A seal ring 421 is connected between the piston rod installation hole 42 and the piston rod 1 , and the seal ring 421 is located in a seal ring groove provided on the piston rod 1 . the

Although the embodiments of the present utility model have been described above in conjunction with the accompanying drawings, those of ordinary skill in the art can also realize that it is feasible to make various changes or modifications within the scope of the appended claims, and these modifications and changes should be understood To be within the scope and intent of the present utility model. the

Claims (5)

1. one kind is used to tilt and the accent push rod jack of high-dipping comprehensive mining hydraulic bracket, comprise the piston rod (1), cylinder body (2), the bearing pin (3) that are connected with the base (4) of hydraulic support, base (4) comprises base plate (43), cover plate (44), inner wall panel (45), outer body of wall (46), the front and back shrouding (47) that is mutually permanently connected and forms six body structures, inner wall panel (45) is provided with cylinder body installing hole (41), outer body of wall (46) is provided with piston rod installing hole (42), cylinder body installing hole (41) and piston rod installing hole (42) coaxial line; The part of piston rod (1) is positioned at piston rod installing hole (42), piston rod (1) its outer end by bearing pin (3) with outside body of wall (46) be connected, cylinder body (2) telescopic moving in cylinder body installing hole (41), be provided with dust-proof seal ring (411) between cylinder body installing hole (41) and the cylinder body (2), it is characterized in that: described cylinder body (2) front end is connected with cylinder body heelpiece (21), and outside push rod (5) side with hydraulic support at inner wall panel (45) of cylinder body heelpiece (21) front end flexibly connects.

2. according to claim 1ly be used to tilt and the accent push rod jack of high-dipping comprehensive mining hydraulic bracket, it is characterized in that: described cylinder body (2) bottom is provided with rotating shaft (22), the axis of rotating shaft (22) and cylinder body (2) axis normal, cylinder body heelpiece (21) is provided with the cross through hole (211) that adapts with rotating shaft (22), and cylinder body (2) bottom is rotationally connected with cylinder body heelpiece (21) by rotating shaft (22) and through hole (211).

3. according to claim 2ly be used to tilt and the accent push rod jack of high-dipping comprehensive mining hydraulic bracket, it is characterized in that: be fixedly connected with outer cylinder sheath (212) on the described cylinder body heelpiece (21), outer cylinder sheath (212) is extended to cylinder body (2) rear end by cylinder body (2) front end, outer cylinder sheath (212) is enclosed in cylinder body (2) outside, be provided with the gap between the inwall of outer cylinder sheath (212) and cylinder body (2) outer wall, outer cylinder sheath (212) is slidingly matched with cylinder body installing hole (41).

4. according to claim 1ly be used to tilt and the accent push rod jack of high-dipping comprehensive mining hydraulic bracket, it is characterized in that: described bearing pin (3) quantity is 1, the axis of bearing pin (3) axis and piston rod (1) intersects vertically in same plane, and bearing pin (3) is rotatably assorted in bearing pin (3) installing hole that piston rod (1) and base (4) relevant position are provided with.

5. according to claim 1ly be used to tilt and the accent push rod jack of high-dipping comprehensive mining hydraulic bracket, it is characterized in that: be connected with joint ring (421) between described piston rod installing hole (42) and the piston rod (1), joint ring (421) is arranged in the joint ring draw-in groove that piston rod (1) is provided with.

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