Underground coal mine onboard forepoling device

Abstract

The utility model discloses a machine-mounted advance support device for an underground coal mine, and relates to the technical field of temporary support. Comprising a sliding rod, the outer edge of the sliding rod is slidably connected with a circle of sliding table, the outer edge of the sliding table is rotatably connected with a plurality of evenly-distributed lifting pulling rods, one end of the sliding rod is fixedly connected with a protection table, and the outer edge of the protection table is rotatably connected with a plurality of evenly-distributed folding connecting rods; the outer end of each folding connecting rod is rotationally connected with a supporting pulling frame. Through the arrangement of the protective support and the protective skin and the arrangement of the sliding table, the protective support and the protective skin can be supported by corresponding sizes according to actual conditions, so that the coal mine roadway wall is attached and supported, and soil and stones on the roadway wall can be completely blocked by the protective skin; the situation that soil and rocks fall into the range shielded by the protective skin is avoided, and the good protective supporting effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of temporary support, in particular to an underground coal mine machine-mounted advanced support device. Background Art

[0002] A typical coal mine needs to excavate 16,000 meters of tunnels annually to accommodate fully mechanized mining faces. With the introduction of high-powered tunneling machines (TDMs), tunneling speeds are accelerating. However, the existing support method requires a 500-square-millimeter metal mesh to be placed on either side of the tunnel after the TDM cuts two rows of tunnels and before support is applied. This prevents roof collapse and injuries from falling roofs. Existing underground coal mine machine-mounted advance support devices (Announcement No. CN203891913U) have at least the following drawbacks:

[0003] The above scheme supports and protects the coal mine tunnel wall by setting up support arms and support caps. However, in actual use, these support caps can only support some supporting points of the wall, so some soil and rocks may still leak between the support arms, causing safety hazards. Therefore, an underground coal mine airborne advanced support device is developed. Utility Model Content

[0004] The main purpose of the utility model is to provide an underground coal mine machine-mounted advance support device, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The cam is connected to the lifting and lowering rods by sliding, and the lifting and lowering rods are connected to the lifting and lowering rods by rotating the lifting and lowering rods.

[0007] Preferably, a folding slide is provided on the inner side of each folding connecting rod, and the inner walls on both sides of each folding slide are in sliding contact with the two sides of the corresponding lifting and pulling rod respectively. A connecting groove is provided on the surface of each supporting and pulling frame, and one end of each lifting and pulling rod is rotatably connected to the inner walls on both sides of the corresponding connecting groove.

[0008] Preferably, each of the protective brackets is rotatably connected to a side of the protective platform, each of the angle-adjusting rotating seats is fixedly connected to a side of the angle-adjusting rotating seat, one end of each of the angle-adjusting rotating seats is fixedly connected to another angle-adjusting rotating seat, and the angle-adjusting rotating seats separated from the protective brackets are all rotatably connected to the protective platform.

[0009] Preferably, a positioning slot is provided on the surface of the sliding rod, a slider is fixedly connected to the inner wall of the sliding platform, and the slider is slidably connected to the inner walls on both sides of the positioning slot.

[0010] Preferably, one end of the sliding rod facing away from the protective platform is fixedly connected to a connecting base, one side of the connecting base is fixedly connected to a rotating platform, and one side of the rotating platform is rotatably connected to a placement seat.

[0011] Preferably, two symmetrically distributed sealing sleeves are fixedly connected to the side of the connecting base facing away from the rotating table, a sliding push rod is slidably connected to the inner wall of one side of the sealing sleeve, and each of the sliding push rods is fixedly connected to the sliding table.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By setting up the protective bracket and protective skin, and utilizing the setting of the sliding platform, the protective bracket and protective skin can be propped up to the corresponding size according to the actual situation, so as to fit and support the coal mine tunnel wall, so that the soil and rock on the tunnel wall can be completely blocked by the protective skin, avoiding the soil and rock from falling into the range blocked by the protective skin, and achieving a better protective support effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an isometric view of the present utility model;

[0015] Figure 2 This is a schematic diagram of the protective frame structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the support drive frame of the utility model;

[0017] Figure 4 It is a schematic diagram of the internal structure of the lifting structure of the utility model.

[0018] In the figure: 101, protective bracket; 102, angle adjustment spring; 103, protective platform; 104, sliding platform; 105, sliding rod; 106, positioning slide; 107, lifting and pulling rod; 108, supporting and pulling frame; 109, folding slide; 110, folding connecting rod; 201, placement seat; 202, rotating platform; 203, sealing sleeve; 204, sliding push rod; 205, connecting base; 206, air pump; 207, sliding top plate; 208, sealing piston; 301, protective skin. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0022] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0023] A coal mine underground airborne advanced support device includes a sliding rod 105, the outer edge of the sliding rod 105 is slidably connected to a circle of sliding platforms 104, the outer edge of the sliding platform 104 is rotatably connected to a plurality of evenly distributed lifting and pulling rods 107, one end of the sliding rod 105 is fixedly connected to a protective platform 103, the outer edge of the protective platform 103 is rotatably connected to a plurality of evenly distributed folding connecting rods 110, the outer end of each folding connecting rod 110 is rotatably connected to a supporting and pulling frame 108, each supporting and pulling frame 108 corresponds to a lifting and pulling rod 107, each lifting and pulling rod 107 is rotatably connected to the corresponding supporting and pulling frame 108, one end of each supporting and pulling frame 108 is rotatably connected to a protective bracket 101, and a protective skin 301 is fixedly connected between two adjacent protective brackets 101. Each folding connecting rod 110 has a folding slot 109 on its inner side. The inner walls of each folding slot 109 are in sliding contact with the inner walls of the corresponding lifting and pulling rod 107. Each supporting and pulling frame 108 has a connecting groove on its surface. One end of each lifting and pulling rod 107 is rotatably connected to the inner walls of the corresponding connecting groove. Each protective bracket 101 is rotatably connected to an angle adjustment rotating seat on the side facing the protective platform 103. One side of each angle adjustment rotating seat is fixedly connected to an angle adjustment spring 102. One end of each angle adjustment spring 102 is fixedly connected to another angle adjustment rotating seat. The angle adjustment rotating seats separated from the protective bracket 101 are all rotatably connected to the protective platform 103. The surface of the sliding rod 105 has a positioning slot 106. A slider is fixedly connected to the inner wall of the sliding platform 104. The slider is slidably connected to the inner walls of the positioning slot 106. In this embodiment, by pushing the sliding platform 104 toward the protective platform 103, pulling the folding connecting rod 110 and the supporting pulling frame 108 to straighten, the protective bracket 101 and the protective skin 301 are propped up. The protective skin 301 is made of thicker canvas material and has a better protective effect.

[0024] The end of the sliding rod 105 facing away from the protective platform 103 is fixedly connected to a connecting base 205. A rotating platform 202 is fixedly connected to one side of the connecting base 205. A placement seat 201 is rotatably connected to one side of the rotating platform 202. Two symmetrically distributed sealing sleeves 203 are fixedly connected to the side of the connecting base 205 facing away from the rotating platform 202. A sliding top plate 207 is fixedly connected to one side of the sealing sleeves 203. A sliding push rod 204 is slidably connected to the inner wall of the sliding top plate 207. Each sliding push rod 204 is fixedly connected to the sliding platform 104. In this embodiment, an air pump 206 is fixedly connected to one side of the connecting base 205. The output end of the air pump 206 communicates with the interior of the two sealing sleeves 203. A sealing piston 208 is fixedly connected to one end of the sliding push rod 204, which is inserted into the sealing sleeve 203. The outer edge of the sealing piston 208 is slidably connected to the inner wall of the sealing sleeve 203. The operation of the air pump 206 drives the sliding platform 104.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the accompanying embodiments and their equivalents.

Claims

1. A coal mine underground machine-mounted advance support device, comprising a sliding rod (105), characterized in that: The outer edge of the sliding rod (105) is slidably connected to a circle of sliding platforms (104), the outer edge of the sliding platform (104) is rotatably connected to a plurality of evenly distributed lifting and pulling rods (107), one end of the sliding rod (105) is fixedly connected to a protective platform (103), the outer edge of the protective platform (103) is rotatably connected to a plurality of evenly distributed folding connecting rods (110), the outer end of each folding connecting rod (110) is rotatably connected to a supporting and pulling frame (108), each supporting and pulling frame (108) corresponds to a lifting and pulling rod (107), each lifting and pulling rod (107) is rotatably connected to the corresponding supporting and pulling frame (108), one end of each supporting and pulling frame (108) is rotatably connected to a protective bracket (101), and a protective skin (301) is fixedly connected between two adjacent protective brackets (101).

2. The coal mine underground machine-mounted advanced support device according to claim 1, characterized in that: A folding slide (109) is provided on the inner side of each folding connecting rod (110), and the inner walls on both sides of each folding slide (109) are in sliding contact with the two sides of the corresponding lifting and pulling rod (107). A connecting groove is provided on the surface of each supporting and pulling frame (108), and one end of each lifting and pulling rod (107) is rotatably connected to the inner walls on both sides of the corresponding connecting groove.

3. The coal mine underground machine-mounted advanced support device according to claim 1, characterized in that: Each of the protective brackets (101) is rotatably connected to an angle adjustment rotating seat on one side facing the protective platform (103), and each of the angle adjustment rotating seats is fixedly connected to an angle adjustment spring (102) on one side, and one end of each of the angle adjustment springs (102) is fixedly connected to another angle adjustment rotating seat, and the angle adjustment rotating seats separated from the protective brackets (101) are all rotatably connected to the protective platform (103).

4. The coal mine underground machine-mounted advanced support device according to claim 1, characterized in that: A positioning slot (106) is provided on the surface of the sliding rod (105), and a slider is fixedly connected to the inner wall of the sliding platform (104), and the slider is slidably connected to the inner walls on both sides of the positioning slot (106).

5. The coal mine underground machine-mounted advanced support device according to claim 1, characterized in that: One end of the sliding rod (105) facing away from the protective platform (103) is fixedly connected to a connecting base (205), one side of the connecting base (205) is fixedly connected to a rotating platform (202), and one side of the rotating platform (202) is rotatably connected to a placement seat (201).

6. The coal mine underground machine-mounted advanced support device according to claim 5, characterized in that: Two symmetrically distributed sealing sleeves (203) are fixedly connected to one side of the connecting base (205) facing away from the rotating platform (202); a sliding push rod (204) is slidably connected to the inner wall of one side of the sealing sleeve (203); and each sliding push rod (204) is fixedly connected to the sliding platform (104).

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