Auxiliary pushing device for ultra-thin coal seam hydraulic support

Abstract

The utility model discloses an auxiliary pushing device for an ultra-thin coal seam hydraulic support. The auxiliary pushing device comprises a first rolling wheel mechanism, a second rolling wheel mechanism, a third rolling wheel mechanism, a fourth rolling wheel mechanism and a hydraulic support base. The first roller mechanism is located in front of the right side of the hydraulic support base, the second roller mechanism is located behind the right side of the hydraulic support base, the third roller mechanism is located in front of the left side of the hydraulic support base, and the fourth roller mechanism is located behind the left side of the hydraulic support base. Compared with the prior art, the pushing friction resistance can be reduced in the forward moving process of the hydraulic support, so that the moving efficiency of the hydraulic support is greatly improved, and the pushing device adapts to the characteristic that the working face of the hydraulic support in an ultra-thin coal seam is high in pushing speed and is simple and compact in structural design. The device can flexibly adapt to a working face environment with a small mining space of an ultra-thin coal mine.

Description

Technical Field

[0001] The utility model relates to an auxiliary pushing device, in particular to an auxiliary pushing device for an ultra-thin coal seam hydraulic support, belonging to the technical field of coal mining. Background Art

[0002] Generally speaking, hydraulic supports are widely used in underground mining operations, such as coal and metal mines. They are primarily used to support and control the roof of the mining face to ensure operational safety and improve mining efficiency. Specifically, hydraulic supports are powered by a hydraulic system, enabling them to be raised, lowered, and moved to adapt to varying working conditions and environments.

[0003] Ultra-thin coal seams generally refer to those with a thickness of less than 0.8 meters. Hydraulic supports for ultra-thin coal seams must adapt to their characteristics, such as confined space and rapid working face advancement. However, existing hydraulic supports are typically designed for medium-thick and thick coal seams, lacking sufficient adaptation to the characteristics of ultra-thin coal seams. Their relatively low level of mechanization makes them incapable of meeting current mining requirements for ultra-thin coal seams. Utility Model Content

[0004] The purpose of the present utility model is to solve at least one of the above-mentioned technical problems and to provide an auxiliary pushing device for an ultra-thin coal seam hydraulic support. The auxiliary pushing device can reduce the pushing friction resistance during the forward movement of the hydraulic support, thereby greatly improving the moving efficiency of the hydraulic support, and adapting to the characteristics of the fast advancing speed of the working face of the hydraulic support in the ultra-thin coal seam. At the same time, its structural design is simple and compact, and can flexibly adapt to the working face environment with smaller mining space in ultra-thin coal mines.

[0005] The utility model achieves the above-mentioned object through the following technical solutions: an auxiliary pushing device for an ultra-thin coal seam hydraulic support, comprising a hydraulic support base, on which a first roller mechanism, a second roller mechanism, a third roller mechanism and a fourth roller mechanism are installed;

[0006] Among them, the first roller mechanism is located at the front end of one side of the hydraulic support base, the second roller mechanism is located at the rear end on the same side as the first roller mechanism, the third roller mechanism is located at the front end of the other side of the hydraulic support base, and the fourth roller mechanism is located at the rear end on the same side as the third roller mechanism.

[0007] As a further technical solution of the utility model: a first hole adapted to the size of the roller is opened on the hydraulic support base below the first roller mechanism; a second hole adapted to the size of the roller is opened on the hydraulic support base below the second roller mechanism, a third hole adapted to the size of the roller is opened on the hydraulic support base below the third roller mechanism, and a fourth hole adapted to the size of the roller is opened on the hydraulic support base below the fourth roller mechanism.

[0008] As a further technical solution of the present invention: the first roller mechanism includes a first hydraulic mechanism, a first roller and a second hydraulic mechanism; wherein the first hydraulic mechanism and the second hydraulic mechanism are symmetrically installed on both sides of the first roller.

[0009] As a further technical solution of the present invention: the first hydraulic mechanism includes a first hydraulic rod, a first guide groove, a first bearing seat and a first cylindrical rolling bearing; wherein, the first roller is fixedly mounted on the inner ring of the first cylindrical rolling bearing, the first bearing seat is fixedly mounted on the outer ring of the first cylindrical rolling bearing, the first guide groove is slidably mounted on the first bearing seat, the hydraulic cylinder part of the first hydraulic rod is fixedly mounted on the first guide groove, and the hydraulic rod part of the first hydraulic rod is fixedly mounted on the first bearing seat.

[0010] As a further technical solution of the present invention: the structure of the second hydraulic mechanism is exactly the same as that of the first hydraulic mechanism;

[0011] As a further technical solution of the utility model: the structures of the second roller mechanism, the third roller mechanism and the fourth roller mechanism are exactly the same as the first roller mechanism;

[0012] The beneficial effects of the utility model are:

[0013] 1) The utility model can reduce the friction resistance of the hydraulic support during its forward movement, thereby greatly improving the moving efficiency of the hydraulic support and adapting to the characteristics of the fast advancing speed of the hydraulic support working face in extremely thin coal seams;

[0014] 2) The structural design of the utility model is simple and compact. The auxiliary pushing device is located inside the base of the hydraulic support. It can be extended to assist the movement of the hydraulic support when the hydraulic support moves, and retracted into the base when working. It occupies a small space and can flexibly adapt to the working surface environment with small space in extremely thin coal mining;

[0015] 3) The utility model changes sliding into rolling during the forward movement of the hydraulic support, thereby reducing the wear of the hydraulic support base and increasing the service life of the hydraulic support. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model;

[0017] Figure 2 It is a bottom schematic diagram of an embodiment of the utility model;

[0018] Figure 3 This is a front view of an embodiment of the first roller mechanism of the present utility model;

[0019] Figure 4 This is a front view of the first hydraulic mechanism embodiment of the utility model

[0020] In the picture:

[0021] 1. First roller mechanism, 1-1. First hydraulic mechanism, 1-2. First roller, 1-3. Second hydraulic mechanism, 1-1-1. First hydraulic rod, 1-1-2. First guide groove, 1-1-3. First bearing seat, 1-1-4. First cylindrical rolling bearing;

[0022] 2. Second roller mechanism; 3. Third roller mechanism; 4. Fourth roller mechanism;

[0023] 5. Hydraulic support base, 5-1, first hole, 5-2, second hole, 5-3, third hole, 5-4, fourth hole. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. The embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0025] Example 1, as Figure 1 As shown, this embodiment provides an auxiliary pushing device for an ultra-thin coal seam hydraulic support, the auxiliary pushing device comprising a first roller mechanism 1, a second roller mechanism 2, a third roller mechanism 3, a fourth roller mechanism 4 and a hydraulic support base 5;

[0026] Among them, the first roller mechanism 1 is located in front of the right side of the hydraulic support base 5, the second roller mechanism 2 is located behind the right side of the hydraulic support base 5, the third roller mechanism 3 is located in front of the left side of the hydraulic support base 5, and the fourth roller mechanism 4 is located behind the left side of the hydraulic support base 5.

[0027] Example 2, as Figure 2 As shown, in addition to all the technical features of the first embodiment, this embodiment also includes: a first hole 5-1 adapted to the size of the roller is opened on the hydraulic support base 5 below the first roller mechanism 1, a second hole 5-2 adapted to the size of the roller is opened on the hydraulic support base 5 below the second roller mechanism 2, a third hole 5-3 adapted to the size of the roller is opened on the hydraulic support base 5 below the third roller mechanism 3, and a fourth hole 5-4 adapted to the size of the roller is opened on the hydraulic support base 5 below the fourth roller mechanism 4.

[0028] In this embodiment, the first roller mechanism 1, the second roller mechanism 2, the third roller mechanism 3 and the fourth roller mechanism 4 can move up and down synchronously. When the hydraulic support is working, the roller mechanism retracts into the inside of the base. When the hydraulic support moves, the roller mechanism extends through the first hole 5-1, the second hole 5-2, the third hole 5-3 and the fourth hole 5-4 on the base to assist the movement of the hydraulic support.

[0029] Example 3, as Figure 3 As shown, in addition to all the technical features of Example 2, this embodiment also includes: the first roller mechanism 1 includes a first hydraulic mechanism 1-1, a first roller 1-2, and a second hydraulic mechanism 1-3; wherein the first hydraulic mechanism 1-1 and the second hydraulic mechanism 1-3 are symmetrically installed on both sides of the first roller 1-2.

[0030] In this embodiment, the first hydraulic mechanism 1 - 1 and the second hydraulic mechanism 1 - 3 drive the first roller 1 - 2 to move up and down.

[0031] Example 4, as Figure 4 As shown, in addition to all the technical features of the first embodiment, this embodiment further includes: a first hydraulic mechanism 1-1 includes a first hydraulic rod 1-1-1, a first guide groove 1-1-2, a first bearing seat 1-1-3 and a first cylindrical rolling bearing 1-1-4;

[0032] Among them, the first roller 1-2 is fixedly installed on the inner ring of the first cylindrical rolling bearing 1-1-4, the first bearing seat 1-1-3 is fixedly installed on the outer ring of the first cylindrical rolling bearing 1-1-4, the first guide groove 1-1-2 is slidably installed on the first bearing seat 1-1-3, the hydraulic cylinder part of the first hydraulic rod 1-1-1 is fixedly installed on the first guide groove 1-1-2, and the hydraulic rod part of the first hydraulic rod 1-1-1 is fixedly installed on the first bearing seat 1-1-3.

[0033] In this embodiment, the first hydraulic rod 1-1-1 drives the first bearing seat 1-1-3 to move up and down by telescoping, and the first bearing seat 1-1-3 drives the first cylindrical rolling bearing 1-1-4 to move up and down;

[0034] Example 5, as Figure 1 As shown, in addition to all the technical features of Example 1, this embodiment also includes: the structure of the second hydraulic mechanism 1-3 is exactly the same as the structure of the first hydraulic mechanism 1-1; the structure of the second roller mechanism 2, the third roller mechanism 3 and the fourth roller mechanism 4 is exactly the same as the structure of the first roller mechanism 1.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0036] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An auxiliary pushing device for a hydraulic support in an extremely thin coal seam, comprising a hydraulic support base (5), characterized in that: A first roller mechanism (1), a second roller mechanism (2), a third roller mechanism (3) and a fourth roller mechanism (4) are installed on the hydraulic support base (5); The first roller mechanism (1) is located at the front end of one side of the hydraulic support base (5), the second roller mechanism (2) is located at the rear end of the same side as the first roller mechanism (1), the third roller mechanism (3) is located at the front end of the other side of the hydraulic support base (5), and the fourth roller mechanism (4) is located at the rear end of the same side as the third roller mechanism (3).

2. The auxiliary pushing device according to claim 1, characterized in that: A first hole (5-1) adapted to the size of the roller is provided on the hydraulic support base (5) below the first roller mechanism (1); a second hole (5-2) adapted to the size of the roller is provided on the hydraulic support base (5) below the second roller mechanism (2); a third hole (5-3) adapted to the size of the roller is provided on the hydraulic support base (5) below the third roller mechanism (3); and a fourth hole (5-4) adapted to the size of the roller is provided on the hydraulic support base (5) below the fourth roller mechanism (4).

3. The auxiliary pushing device according to claim 1, characterized in that: The first roller mechanism (1) comprises a first hydraulic mechanism (1-1), a first roller (1-2) and a second hydraulic mechanism (1-3); wherein the first hydraulic mechanism (1-1) and the second hydraulic mechanism (1-3) are symmetrically mounted on both sides of the first roller (1-2).

4. The auxiliary pushing device according to claim 3, characterized in that: The first hydraulic mechanism (1-1) comprises a first hydraulic rod (1-1-1), a first guide groove (1-1-2), a first bearing seat (1-1-3) and a first cylindrical rolling bearing (1-1-4); wherein the first roller (1-2) is fixedly mounted on the inner ring of the first cylindrical rolling bearing (1-1-4), the first bearing seat (1-1-3) is fixedly mounted on the outer ring of the first cylindrical rolling bearing (1-1-4), the first guide groove (1-1-2) is slidably mounted on the first bearing seat (1-1-3), the hydraulic cylinder portion of the first hydraulic rod (1-1-1) is fixedly mounted on the first guide groove (1-1-2), and the hydraulic rod portion of the first hydraulic rod (1-1-1) is fixedly mounted on the first bearing seat (1-1-3).

5. The auxiliary pushing device according to claim 4, characterized in that: The structure of the second hydraulic mechanism (1-3) is completely identical to that of the first hydraulic mechanism (1-1).

6. The auxiliary pushing device according to claim 1, characterized in that: The structures of the second roller mechanism (2), the third roller mechanism (3) and the fourth roller mechanism (4) are completely identical to the structure of the first roller mechanism (1).

Images