Supporting device for coal mining

Abstract

The utility model discloses a coal mining supporting device which comprises a support, two second electric push rods are installed above the support, lifting blocks are installed at the output ends of the second electric push rods, second connecting bearings are installed in the lifting blocks, and connecting supporting rods are arranged in the second connecting bearings in a penetrating mode. A worm wheel is mounted at the front end of the connecting supporting rod, and an upper supporting plate is mounted between the two lifting blocks; and the fixing plate is fixedly installed at the front end of the lifting block, a first connecting bearing is installed in the fixing plate, and a worm is arranged in the first connecting bearing in a penetrating mode. According to the supporting device for coal mining, the upper supporting plate with the arc-shaped upper surface and the plane-shaped lower surface is arranged, and the upper supporting plate can be rotationally adjusted to enable the plane surface to be located above, so that the supporting device can be conveniently used in a flat-top coal mine hole and an arc-top coal mine hole, and the application range of the supporting device is widened; and the use cost of the supporting device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to a supporting device for coal mining. Background Art

[0002] In the process of coal mining, a series of support measures need to be taken to ensure the safety and stability of the working face and reduce the impact of mine pressure on mining operations. The selection and use of support devices are directly related to the life safety of miners and the production efficiency of mines.

[0003] China Authorization Announcement No. CN218716913U discloses a reinforced support device for coal mine development, including a support base, the left and right sides of the bottom end of the support base are fixedly connected with conical columns, the interior of the two conical columns is provided with a mounting groove, the interior of the mounting groove is provided with a threaded tube, the interior of the threaded tube is threadedly connected with a threaded rod, the bottom end of the threaded rod is fixedly connected with a fixed column, the outside of the threaded tube is fixedly connected with a fixed block, the front and rear sides of the conical column are provided with exit grooves, the front and rear sides of the fixed block are fixedly connected with connecting blocks, and the interiors of the two connecting blocks are rotatably connected with plug rods. In the utility model, by turning the handle, the coal mine tunnel is supported, and by turning the rotating rod, the support device is installed and disassembled, thereby making the support device more convenient to use and eliminating certain limitations.

[0004] The existing support device has a single arc-shaped or flat upper part and can only be used in coal mine caves with arc-shaped tops or coal mine caves with flat tops. The scope of use is narrow, resulting in the need to prepare corresponding support devices separately for coal mine caves with arc-shaped tops and coal mine caves with flat tops, which greatly increases the use cost of the support device. For this reason, we propose a support device for coal mine mining. Utility Model Content

[0005] The purpose of the utility model is to provide a support device for coal mining, so as to solve the problem proposed in the above background technology that the upper part of the existing support device is a single arc-shaped or flat-shaped device, and can only be used in coal mine caves with arc-shaped tops or coal mine caves with flat tops, and the scope of use is narrow, resulting in the need to separately prepare corresponding support devices for coal mine caves with arc-shaped tops and coal mine caves with flat tops, which greatly increases the use cost of the support device.

[0006] To achieve the above object, the utility model provides the following technical solutions: a support device for coal mining, comprising a bracket, two second electric push rods are installed above the bracket, a lifting block is installed at the output end of the second electric push rod, a second connecting bearing is installed inside the lifting block, a connecting support rod is passed through the inside of the second connecting bearing, a worm gear is installed at the front end of the connecting support rod, and an upper support plate is installed between the two lifting blocks;

[0007] A fixing plate is fixedly mounted on the front end of the lifting block, a first connecting bearing is mounted inside the fixing plate, and a worm is passed through the inside of the first connecting bearing.

[0008] Preferably, the connecting support rod is movably connected to the lifting block via a second connecting bearing, and the connecting support rod is fixedly connected to the upper support plate.

[0009] Preferably, the upper surface of the upper support plate is an arc-shaped structure, and the lower surface of the upper support plate is a planar structure.

[0010] Preferably, the worm is movably connected to the fixed plate via a first connecting bearing, and the worm wheel is meshingly connected to the worm.

[0011] Preferably, the bracket is further provided with:

[0012] The movable hole is opened inside the bracket, and the length and width of the movable hole are greater than the length and width of the upper support plate.

[0013] Preferably, the bracket is further provided with:

[0014] The first electric push rod is installed on both sides of the bracket, and the output end of the first electric push rod is installed with a side support plate.

[0015] Compared with the prior art, the utility model provides a support device for coal mine mining, which has the following beneficial effects: the support device for coal mine mining is provided with an upper support plate with an arc-shaped upper surface and a flat lower surface, and the upper support plate can be rotated and adjusted so that the flat surface is on the top, so as to be convenient for use in flat-top coal mine caves and arc-top coal mine caves, thereby expanding the scope of use of the support device and reducing the use cost of the support device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0019] Figure 4 This is a schematic diagram of the connection structure between the worm and the fixing plate of the utility model;

[0020] Figure 5 It is a schematic diagram of the connection structure of the support rod and the lifting block of the utility model.

[0021] In the figure: 1. bracket; 2. side support plate; 3. first electric push rod; 4. second electric push rod; 5. upper support plate; 6. movable hole; 7. connecting support rod; 8. lifting block; 9. worm gear; 10. worm; 11. fixing plate; 12. first connecting bearing; 13. second connecting bearing. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 A support device for coal mining, comprising a support 1, two second electric push rods 4 are installed above the support 1, a lifting block 8 is installed at the output end of the second electric push rod 4, a second connecting bearing 13 is installed inside the lifting block 8, a connecting support rod 7 is penetrated inside the second connecting bearing 13, a worm gear 9 is installed at the front end of the connecting support rod 7, an upper support plate 5 is installed between the two lifting blocks 8; the connecting support rod 7 is movably connected to the lifting block 8 through the second connecting bearing 13, and the connecting support rod 7 is fixedly connected to the upper support plate 5; the upper surface of the upper support plate 5 is an arc-shaped structure, and the lower surface of the upper support plate 5 is a plane structure; a fixed plate 11, which is fixedly installed at the front end of the lifting block 8, and a first connecting rod 7 is installed inside the fixed plate 11 Bearing 12, a worm 10 is inserted into the interior of the first connecting bearing 12; the worm 10 is movably connected to the fixed plate 11 through the first connecting bearing 12, and the worm wheel 9 is meshingly connected to the worm 10; by setting an upper support plate 5 with an arc-shaped upper surface and a flat lower surface, and the upper support plate 5 can be rotated and adjusted so that the flat surface is at the top, so as to be used in flat-top coal mine caves and arc-top coal mine caves, the use scope of the support device is expanded, and the use cost of the support device is reduced; a movable hole 6 is opened inside the bracket 1, and the length and width of the movable hole 6 are larger than the length and width of the upper support plate 5; a first electric push rod 3 is installed on both sides of the bracket 1, and a side support plate 2 is installed at the output end of the first electric push rod 3.

[0024] Working principle: When using the support device for coal mine exploitation, firstly screw the worm 10, and drive the connecting support rod 7 to rotate 180° through the worm gear 9, and adjust the arc surface or flat surface of the upper support plate 5 to match the shape of the top of the mine cave according to the shape of the top of the mine cave, and then place the support device in the coal mine cave, and the second electric push rod 4 is energized to push the lifting block 8 to move upward, thereby driving the upper support plate 5 to move upward to support the top of the coal mine cave, and then the first electric push rods 3 on both sides of the bracket 1 are energized to push the side support plates 2 to move to both sides, so that the side support plates 2 are against the two sides of the coal mine cave, and the installation of the support device can be completed. This is the working principle of the support device for coal mine exploitation.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A support device for coal mining, characterized in that: include: A bracket (1), wherein two second electric push rods (4) are installed above the bracket (1), a lifting block (8) is installed at the output end of the second electric push rod (4), a second connecting bearing (13) is installed inside the lifting block (8), a connecting support rod (7) is passed through the inside of the second connecting bearing (13), a worm gear (9) is installed at the front end of the connecting support rod (7), and an upper support plate (5) is installed between the two lifting blocks (8); A fixed plate (11) is fixedly mounted on the front end of the lifting block (8), a first connecting bearing (12) is mounted inside the fixed plate (11), and a worm (10) is inserted into the interior of the first connecting bearing (12).

2. A support device for coal mining according to claim 1, characterized in that: The connecting support rod (7) is movably connected to the lifting block (8) via a second connecting bearing (13), and the connecting support rod (7) is fixedly connected to the upper support plate (5).

3. A support device for coal mining according to claim 1, characterized in that: The upper surface of the upper support plate (5) is in an arc-shaped structure, and the lower surface of the upper support plate (5) is in a plane-shaped structure.

4. A support device for coal mining according to claim 1, characterized in that: The worm (10) is movably connected to the fixed plate (11) via a first connecting bearing (12), and the worm wheel (9) is meshingly connected to the worm (10).

5. A support device for coal mining according to claim 1, characterized in that: The support (1) is further provided with: A movable hole (6) is provided inside the bracket (1), and the length and width of the movable hole (6) are greater than the length and width of the upper support plate (5).

6. A support device for coal mining according to claim 1, characterized in that: The support (1) is further provided with: A first electric push rod (3) is installed on both sides of the bracket (1), and a side support plate (2) is installed at the output end of the first electric push rod (3).

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