A coal mining machine height adjustment cylinder

Abstract

The utility model discloses a coal mining machine height-adjustable oil cylinder, which relates to the technical field of coal mining machines and comprises a coal mining machine, wherein rocker arms are arranged on both sides of the coal mining machine, picks are fixedly connected to one side of the two rocker arms, two fixed columns are fixedly connected to both sides of the coal mining machine, and the opposite surfaces of the corresponding two fixed columns are rotatably connected to the two sides of the rocker arms, and a height-adjustable oil cylinder is arranged inside the coal mining machine, and piston telescopic rods are arranged on both sides of the height-adjustable oil cylinder, and elastic protective pads are arranged on both sides to stretch and contract with the telescopic length of the piston telescopic rod, so that the two elastic protective pads can protect the piston telescopic rod, so that the elastic protective pads on both sides can effectively prevent the falling and scattered coal slag from remaining on the outer surface of the piston telescopic rod, thereby ensuring the normal operation of the piston telescopic rod to a certain extent, and further improving the practicality of the protective component.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining machines, in particular to a height-adjustable oil cylinder for coal mining machines. Background Art

[0002] The coal shearer height adjustment cylinder is a hydraulic cylinder used on the coal shearer. It has the function of adjusting the coal cutting height of the coal shearer. By adjusting the extension and retraction of the telescopic rods on both sides of the coal shearer height adjustment cylinder, the coal cutting height of the coal shearer can be changed to meet different coal mining needs.

[0003] When the picks on both sides of the existing coal mining machine come into contact with the coal rock and implement cutting, coal slag is easy to fall and scatter on the outer surface of the telescopic rods on both sides of the height-adjustable oil cylinder, and the telescopic rods on both sides of the existing partially adjustable oil cylinder are not provided with relevant protective components, so that the coal slag may get stuck on the sliding surface of the telescopic rod, resulting in increased friction or sticking, thereby affecting the sliding and extension of the telescopic rod, and may cause the telescopic rod to fail to work normally. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a coal mining machine height-adjustable oil cylinder, which can solve the problem that the telescopic rods on both sides of the existing partially adjustable oil cylinders are not provided with relevant protective components, so that coal cinders may be stuck on the sliding surface of the telescopic rod, resulting in increased friction or sticking, thereby affecting the sliding and extension of the telescopic rod and may cause the telescopic rod to fail to work normally.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal mining machine height-adjustable cylinder, comprising a coal mining machine, rocker arms are arranged on both sides of the coal mining machine, pick teeth are fixedly connected to one side of the two rocker arms, two fixed columns are fixedly connected to both sides of the coal mining machine, and the opposite surfaces of the corresponding two fixed columns are rotatably connected to the two sides of the rocker arms, a height-adjustable cylinder is arranged inside the coal mining machine, piston telescopic rods are arranged on both sides of the height-adjustable cylinder, the piston telescopic rods on both sides of the height-adjustable cylinder slide through to the outside of the coal mining machine respectively, and protective components are arranged on the periphery of the two piston telescopic rods.

[0006] Preferably, the protective assembly includes two fixed blocks, one side of the two fixed blocks is fixedly connected to one side of the coal mining machine, the two fixed blocks are respectively located around the two sides of the piston telescopic rod, the top of the two fixed blocks are provided with a second rotation groove, the inner walls of the two second rotation grooves are rotatably connected to the second fixed rods, and the ends of the two second fixed rods away from the corresponding fixed blocks are fixedly connected to elastic protective pull pads.

[0007] Preferably, the two elastic protection pads are both semicircular, the inner sides of the two elastic protection pads are respectively located on the outer surface of the piston telescopic rod and are slidably connected, and the ends of the two elastic protection pads away from the corresponding second fixing rod are fixedly connected to the first fixing rod.

[0008] Preferably, a first threaded groove is formed inside the two first fixing rods, a first rotation groove is formed inside the two rocker arms, and inner walls of the two first rotation grooves are respectively rotatably connected to one end of the corresponding piston telescopic rod.

[0009] Preferably, both sides of the rocker arm are rotatably connected with a rotating column, the inner sides of the two rotating columns are provided with a fixing groove, the outer surfaces of the two fixing grooves are provided with a second thread groove, and the interiors of the two second thread grooves are respectively connected to the interiors of the corresponding fixing grooves.

[0010] Preferably, the inner walls of the two second thread grooves are threadedly connected to fixing bolts, and the outer surfaces of the two fixing bolts are respectively threadedly connected to the inner walls of the corresponding first thread grooves. Four protective components are provided, which are respectively arranged on both sides of the coal mining machine.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The coal mining machine height-adjustable oil cylinder is provided with elastic protective pads. The elastic protective pads on both sides will stretch and contract along with the extension and retraction length of the piston telescopic rod, so that the two elastic protective pads can protect the piston telescopic rod. The elastic protective pads on both sides can effectively prevent the falling and scattered coal slag from remaining on the outer surface of the piston telescopic rod, thereby ensuring the normal operation of the piston telescopic rod to a certain extent and further improving the practicality of the protective component.

[0013] (2) The coal mining machine height-adjustable oil cylinder can be arranged with a fixing bolt so that the fixing bolt can be turned to disengage from the first threaded groove, so that the first fixing rod can drive the elastic protective pad to be disengaged from the fixing groove, thereby separating and disassembling the elastic protective pad and the rocker arm. When the rocker arm is disassembled for maintenance or repair, the elastic protective pad can be easily disassembled and assembled, thereby improving the practicality of the elastic protective pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a height-adjustable oil cylinder for a coal mining machine according to the utility model;

[0016] Figure 2 It is a schematic diagram of the elastic protective pad of the utility model;

[0017] Figure 3 For the utility model Figure 2 A is an enlarged schematic diagram;

[0018] Figure 4 It is a plane schematic diagram of the fixing block of the utility model;

[0019] Figure 5 It is a plan view of the piston telescopic rod of the utility model.

[0020] Figure numerals: 1, coal mining machine; 2, fixed column; 3, rocker arm; 4, pick; 5, first rotating groove; 6, piston telescopic rod; 7, first fixed rod; 8, first threaded groove; 9, elastic protective pad; 10, second fixed rod; 11, second rotating groove; 12, fixed block; 13, rotating column; 14, fixed groove; 15, second threaded groove; 16, fixing bolt; 17, height-adjustable cylinder. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0025] See also Figure 1-5The utility model provides a technical solution: a coal mining machine height-adjustable oil cylinder, comprising a coal mining machine 1, rocker arms 3 are arranged on both sides of the coal mining machine 1, and pick teeth 4 are fixedly connected to one side of the two rocker arms 3, two fixed columns 2 are fixedly connected to both sides of the coal mining machine 1, and the opposite surfaces of the corresponding two fixed columns 2 are rotatably connected to the two sides of the rocker arms 3, a height-adjustable oil cylinder 17 is arranged inside the coal mining machine 1, and piston telescopic rods 6 are arranged on both sides of the height-adjustable oil cylinder 17, and the piston telescopic rods 6 on both sides of the height-adjustable oil cylinder 17 slide through the outside of the coal mining machine 1 respectively, and protective components are arranged on the peripheries of the two piston telescopic rods 6.

[0026] Furthermore, the protection component includes two fixed blocks 12, one side of the two fixed blocks 12 is fixedly connected to one side of the coal mining machine 1, the two fixed blocks 12 are respectively located on both sides of the piston telescopic rod 6, the top of the two fixed blocks 12 is provided with a second rotation groove 11, the inner walls of the two second rotation grooves 11 are rotatably connected with the second fixed rods 10, and the ends of the two second fixed rods 10 away from the corresponding fixed blocks 12 are fixedly connected with elastic protective pads 9, the two elastic protective pads 9 are semicircular, and the inner sides of the two elastic protective pads 9 are respectively located on the outer surface of the piston telescopic rod 6 for sliding connection;

[0027] Among them, the two elastic protective pads 9 are respectively fixedly connected to the first fixed rod 7 at one end away from the corresponding second fixed rod 10, the two first fixed rods 7 are provided with a first threaded groove 8 inside, and the two rocker arms 3 are provided with a first rotating groove 5 inside, and the inner walls of the two first rotating grooves 5 are respectively rotatably connected to one end of the corresponding piston telescopic rod 6.

[0028] Among them, both sides of the rocker arm 3 are rotatably connected with a rotating column 13, and the inner sides of the two rotating columns 13 are provided with a fixing groove 14. The outer surfaces of the two fixing grooves 14 are provided with a second thread groove 15. The interiors of the two second thread grooves 15 are respectively connected to the interiors of the corresponding fixing grooves 14, and the inner walls of the two second thread grooves 15 are threadedly connected to fixing bolts 16. The outer surfaces of the two fixing bolts 16 are respectively threadedly connected to the inner walls of the corresponding first thread grooves 8. Four protective components are provided, which are respectively arranged on both sides of the coal mining machine 1.

[0029] Furthermore, when the height-adjustable oil cylinder 17 adjusts the piston telescopic rod 6 on both sides to adjust the rocker arms 3 on both sides, during the operation of the existing coal mining machine 1, the height-adjustable oil cylinder of the coal mining machine 1 realizes the reciprocating motion of the piston telescopic rod through the transmission of hydraulic oil, thereby controlling the change in the coal cutting height of the coal mining machine. This is the existing technology and will not be elaborated on here.

[0030] Furthermore, through the provision of the elastic protective pads 9, the elastic protective pads 9 on both sides will stretch and contract along with the telescopic length of the piston telescopic rod 6, so that the two elastic protective pads 9 can protect the piston telescopic rod 6, so that the elastic protective pads 9 on both sides can effectively prevent the fallen and scattered coal slag from remaining on the outer surface of the piston telescopic rod 6, thereby ensuring the normal operation of the piston telescopic rod to a certain extent, and further improving the practicality of the protective component.

[0031] Furthermore, by setting the fixing bolt 16, the fixing bolt 16 can be rotated to disengage from the interior of the first threaded groove 8, so that the first fixing rod 7 can drive the elastic protection pad 9 to be disengaged and disassembled from the fixing groove 14, so that the elastic protection pad 9 and the rocker arm 3 can be separated and disassembled, and the elastic protection pad 9 can be conveniently disassembled and assembled when the rocker arm 3 is disassembled for maintenance or repair, thereby improving the practicality of the elastic protection pad 9.

[0032] Working principle: through the setting of the elastic protective pad 9, when the piston telescopic rod 6 on both sides is adjusted by the height-adjusting cylinder 17 to adjust the rocker arms 3 on both sides, during the operation of the existing coal mining machine 1, the coal mining machine 1 height-adjusting cylinder realizes the reciprocating motion of the piston telescopic rod through the transmission of hydraulic oil, thereby controlling the change of the coal cutting height of the coal mining machine. This is the prior art and will not be elaborated on here. The elastic protective pads 9 on both sides will stretch and contract with the telescopic length of the piston telescopic rod 6, so that the two elastic protective pads 9 can play a protective role for the piston telescopic rod 6, so that the elastic protective pads 9 on both sides can effectively prevent the falling and scattered coal slag from remaining on the outer surface of the piston telescopic rod 6, thereby ensuring the normal operation of the piston telescopic rod to a certain extent, and further improving the practicality of the protective component.

[0033] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A coal mining machine height adjustment cylinder, comprising a coal mining machine (1), rocker arms (3) are arranged on both sides of the coal mining machine (1), one side of each of the two rocker arms (3) is fixedly connected with a pick (4), two fixed columns (2) are fixedly connected on both sides of the coal mining machine (1), the opposite surfaces of the corresponding two fixed columns (2) are rotatably connected to the two sides of the rocker arms (3), a height adjustment cylinder (17) is arranged inside the coal mining machine (1), piston telescopic rods (6) are arranged on both sides of the height adjustment cylinder (17), and the piston telescopic rods (6) on both sides of the height adjustment cylinder (17) slide through the two sides of the outside of the coal mining machine (1), characterized in that: The peripheries of the two piston telescopic rods (6) are both provided with protective components; The protection component comprises two fixed blocks (12), one side of the two fixed blocks (12) is fixedly connected to one side of the coal mining machine (1), and the two fixed blocks (12) are respectively located on both sides of the piston telescopic rod (6).

2. A coal mining machine height adjustment cylinder according to claim 1, characterized in that: The top ends of the two fixed blocks (12) are each provided with a second rotation groove (11), the inner walls of the two second rotation grooves (11) are both rotationally connected to second fixed rods (10), and the ends of the two second fixed rods (10) that are respectively away from the corresponding fixed blocks (12) are both fixedly connected to elastic protective pull pads (9).

3. A coal mining machine height adjustment cylinder according to claim 2, characterized in that: The two elastic protective pads (9) are both semicircular; The inner sides of the two elastic protective pads (9) are respectively located on the outer surface of the piston telescopic rod (6) for sliding connection, and the ends of the two elastic protective pads (9) away from the corresponding second fixed rod (10) are fixedly connected to the first fixed rod (7).

4. A coal mining machine height adjustment cylinder according to claim 3, characterized in that: A first thread groove (8) is formed inside the two first fixing rods (7); Wherein, a first rotation groove (5) is provided inside each of the two rocker arms (3), and the inner walls of the two first rotation grooves (5) are respectively rotationally connected to one end of a corresponding piston telescopic rod (6).

5. The coal mining machine height-adjustable oil cylinder according to claim 1, characterized in that: Both sides of the rocker arm (3) are rotatably connected to a rotating column (13), and the inner sides of the two rotating columns (13) are provided with a fixing groove (14); The outer surfaces of the two fixing grooves (14) are each provided with a second thread groove (15), and the interiors of the two second thread grooves (15) are respectively connected to the interiors of the corresponding fixing grooves (14).

6. A coal mining machine height-adjustable oil cylinder according to claim 5, characterized in that: The inner walls of the two second thread grooves (15) are both threadedly connected with fixing bolts (16); The outer surfaces of the two fixing bolts (16) are respectively threadedly connected to the inner walls of the corresponding first thread grooves (8); There are four protective components, which are respectively arranged on both sides of the coal mining machine (1).

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