Upper coal seam supporting device

Abstract

The utility model relates to the technical field of coal seam supporting, in particular to an upper coal seam supporting device which comprises supporting plates, a movable plate and a screw rod, hydraulic cylinders are installed at the front ends and the rear ends of the tops of the two supporting plates respectively, and a supporting frame is installed at the tops of the four hydraulic cylinders. Movable rods are welded to the two sides of the bottom of the supporting frame correspondingly, fixing bases are welded to the bottoms of the two supporting plates correspondingly, fixing plates are welded to the front ends and the rear ends of the two supporting plates correspondingly, screw holes are formed in the four fixing plates correspondingly, and the four screws are engaged with the four screw holes correspondingly; and bearings are installed at the tops of the four movable plates correspondingly, the bottoms of the four screws are fixedly connected with inner rings of the four bearings correspondingly, and trundles are installed at the bottoms of the four movable plates correspondingly. The utility model has the advantages that the position of the support frame is convenient to move, and the labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal seam support, in particular to an upper coal seam support device. Background Art

[0002] A coal seam refers to a layer of coal buried in an underground coal mine. These coal seams were formed in the geological period and are usually formed by the natural decomposition and compression of plant debris over millions of years. Coal seams can be mined and utilized as energy resources, and have a certain impact on groundwater, geological structures, etc. The upper coal seam support device is a device used to maintain the stability and safety of coal mine tunnels during coal mining. It is used to support and fix coal seams and mine tunnels to prevent accidents such as collapse and landslides. Such a device helps ensure the safety of miners and equipment when working inside a coal mine.

[0003] The position of the support device inside the coal seam mine tunnel needs to be adjusted frequently to ensure the safety and stability of the coal seam. When adjusting the position of the existing support device, the staff needs to dismantle it from the original position, move it to the designated position and then assemble it, which not only takes a long time, but also increases the labor intensity of the staff. Utility Model Content

[0004] The utility model aims to provide an upper coal seam supporting device, which has the advantages of conveniently moving the position of the support frame and reducing labor intensity, thereby solving the problem that the upper coal seam supporting device is inconvenient to adjust the position.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an upper coal seam support device, comprising a support plate, a movable plate and a screw rod, hydraulic cylinders are respectively installed at the front and rear ends of the top of the two support plates, support frames are installed on the top of the four hydraulic cylinders, movable rods are respectively welded on both sides of the bottom of the support frame, fixed seats are respectively welded at the bottom of the two support plates, fixed plates are respectively welded at the front and rear ends of the two support plates, screw holes are respectively opened on the four fixed plates, and the four screw rods are respectively meshed and connected with the four screw holes, bearings are respectively installed on the top of the four movable plates, the bottoms of the four screw rods are respectively fixedly connected to the four bearing inner rings, and casters are respectively installed on the bottom of the four movable plates.

[0006] When using an upper coal seam support device in the present technical solution, two fixed seats are placed on the ground of the coal mine tunnel, and four hydraulic cylinders on the top of the two support plates apply thrust to the support frame, and the support frame rises and contacts the top of the coal mine tunnel. The two support plates and the support frame provide supporting force for the top of the coal mine tunnel. When the position of the support frame needs to be moved, four hand wheels are used to rotate four screws, and the four screws rotate and move in the screw holes of the four fixed plates. The four screws push the four movable plates down respectively, so that the casters at the bottom of the four movable plates pass through the fixing holes of the two fixed seats and contact the ground, applying thrust to the fixed seats, and the two fixed seats can carry the support frame to move position through the casters.

[0007] Preferably, the tops of the two support plates are respectively provided with movable holes in the middle, and the bottoms of the two movable rods are respectively inserted into the two movable holes. The two movable rods limit the support frame, and when the support frame is raised or lowered, the two movable rods move in the movable holes of the two support plates to prevent the support frame from shaking.

[0008] Preferably, hooks are installed on both sides of the support frame, and the two hooks can hang lighting lamps.

[0009] Preferably, the front and rear ends of the support frame are connected, so that the staff can walk inside the support frame.

[0010] Preferably, hand wheels are respectively installed on the tops of the four screw rods, and a distance is left between the hand wheels and the support plate. The four screw rods can be rotated by using the four hand wheels, and when the hand wheels are rotated, there will be no interference with the support plate.

[0011] Preferably, two fixing seats below the four casters are symmetrically provided with fixing holes, the fixing holes passing through the upper and lower ends of the fixing seats. The casters can pass through the fixing holes and contact the ground.

[0012] Preferably, the two support plates are perpendicular to the two fixing seats respectively, and the directions of the two support plates will not be offset.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model provides a fixed seat, a screw rod and a caster. Four hydraulic cylinders on the top of the two support plates apply thrust to the support frame, and the support frame rises and contacts the top of the coal mine tunnel. The two support plates and the support frame provide supporting force for the top of the coal mine tunnel. When the position of the support frame needs to be moved, the support frame is retracted, and four hand wheels are used to rotate four screw rods. The four screw rods rotate and move in the screw holes of the four fixed plates. The four screws push the four movable plates down respectively, so that the casters at the bottom of the four movable plates pass through the fixing holes of the two fixed seats and contact the ground, applying thrust to the fixed seats. The two fixed seats can carry the support frame to move the position through the casters, thereby achieving the effect of conveniently moving the position of the support frame and reducing labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a first angle;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a second angle;

[0017] Figure 3 It is a schematic diagram of the structure of the movable plate and the fixed plate of the utility model;

[0018] Figure 4 This is a schematic diagram of the support plate and support frame structure of the utility model.

[0019] In the figure: 1. fixed seat; 2. movable plate; 3. fixed plate; 4. hand wheel; 5. support plate; 6. hydraulic cylinder; 7. support frame; 8. movable rod; 9. screw rod; 10. fixing hole; 11. caster; 12. hook; 13. bearing; 14. screw hole; 15. movable hole. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0023] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] Embodiment 1

[0025] like Figure 1-Figure 4As shown, an upper coal seam support device proposed by the utility model comprises a support plate 5, a movable plate 2 and a screw rod 9, hydraulic cylinders 6 are respectively installed at the front and rear ends of the tops of the two support plates 5, support frames 7 are installed at the tops of the four hydraulic cylinders 6, hooks 12 are respectively installed on both sides of the inside of the support frames 7, and the front and rear ends of the support frames 7 are connected, and fixed seats 1 are respectively welded at the bottoms of the two support plates 5, and the two support plates 5 are respectively perpendicular to the two fixed seats 1, and fixed plates 3 are respectively welded at the front and rear ends of the two support plates 5, and screw holes 14 are respectively opened on the four fixed plates 3, and four screw rods 9 are respectively meshed and connected with the four screw holes 14, and hand wheels 4 are respectively installed at the tops of the four screw rods 9, and a distance is left between the hand wheels 4 and the support plates 5, bearings 13 are respectively installed at the tops of the four movable plates 2, and the bottoms of the four screw rods 9 are respectively fixedly connected to the inner rings of the four bearings 13, and casters 11 are respectively installed at the bottoms of the four movable plates 2, and the two fixed seats 1 below the four casters 11 are symmetrically provided with fixing holes 10, and the fixing holes 10 run through the upper and lower ends of the fixed seat 1.

[0026] In this embodiment, by placing two fixed seats 1 on the ground of the coal mine tunnel, the four hydraulic cylinders 6 on the top of the two support plates 5 apply thrust to the support frame 7, and the support frame 7 rises and contacts the top of the coal mine tunnel. The two support plates 5 and the support frame 7 provide supporting force for the top of the coal mine tunnel. The hooks 12 on both sides of the inside of the support frame 7 can hang lighting fixtures, and the staff can walk inside the support frame 7. When the position of the support frame 7 needs to be moved, the support frame 7 is retracted, and four hand wheels 4 are used to rotate four screws 9. The four screws 9 rotate and move in the screw holes 14 of the four fixed plates 3. The four screws 9 push the four movable plates 2 down respectively, so that the casters 11 at the bottom of the four movable plates 2 pass through the fixing holes 10 of the two fixed seats 1 and contact the ground, applying thrust to the fixed seat 1, and the two fixed seats 1 can carry the support frame 7 to move the position through the casters 11.

[0027] Embodiment 2

[0028] like Figure 1-Figure 4 As shown, the utility model proposes an upper coal seam support device. Compared with the first embodiment, this embodiment also includes: a movable rod 8 and a movable hole 15. The movable rods 8 are respectively welded on both sides of the bottom of the support frame 7, and the movable holes 15 are respectively opened in the middle of the tops of the two support plates 5. The bottoms of the two movable rods 8 are respectively inserted into the two movable holes 15.

[0029] In this embodiment, the support frame 7 is limited by two movable rods 8. When the support frame 7 is raised or lowered, the two movable rods 8 move in the movable holes 15 of the two support plates 5 to prevent the support frame 7 from shaking.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An upper coal seam support device, comprising a support plate (5), a movable plate (2) and a screw rod (9), characterized in that: Hydraulic cylinders (6) are respectively installed at the front and rear ends of the tops of the two support plates (5), support frames (7) are installed at the tops of the four hydraulic cylinders (6), movable rods (8) are respectively welded on both sides of the bottom of the support frames (7), fixed seats (1) are respectively welded at the bottoms of the two support plates (5), fixed plates (3) are respectively welded at the front and rear ends of the two support plates (5), screw holes (14) are respectively opened on the four fixed plates (3), and the four screw rods (9) are respectively meshed and connected with the four screw holes (14), bearings (13) are respectively installed at the tops of the four movable plates (2), and the bottoms of the four screw rods (9) are respectively fixedly connected with the inner rings of the four bearings (13), and casters (11) are respectively installed at the bottoms of the four movable plates (2).

2. The upper coal seam support device according to claim 1 is characterized in that: A movable hole (15) is respectively opened in the middle of the top of the two support plates (5), and the bottoms of the two movable rods (8) are respectively inserted into the two movable holes (15).

3. The upper coal seam support device according to claim 1 is characterized in that: Hooks (12) are respectively installed on both sides of the interior of the support frame (7).

4. The upper coal seam support device according to claim 1 is characterized in that: The support frame (7) has two ends connected to each other.

5. The upper coal seam support device according to claim 1 is characterized in that: A hand wheel (4) is respectively installed on the top of the four screw rods (9), and a distance is left between the hand wheel (4) and the support plate (5).

6. The upper coal seam support device according to claim 1 is characterized in that: Two fixing seats (1) below the four casters (11) are symmetrically provided with fixing holes (10), and the fixing holes (10) penetrate the upper and lower ends of the fixing seats (1).

7. The upper coal seam support device according to claim 1 is characterized in that: The two support plates (5) are respectively perpendicular to the two fixing seats (1).

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