Fixing structure of thin coal seam advancing jack

Abstract

The utility model provides a fixing structure of a thin coal seam pushing jack, which relates to the technical field of jacks and comprises a pushing plate, two fixing plates are fixedly mounted at the top of the pushing plate, one side of the outer wall of each fixing plate is in threaded connection with a screw rod, and one side of the outer wall of each screw rod is fixedly provided with a handle. And the other sides of the outer walls of the two screw rods are rotationally connected with moving plates. The jack is placed at a proper position on the pushing plate, then the two handles are rotated to drive the two screw rods and the two moving plates to stably and relatively move under the action of the four limiting grooves and the four limiting blocks until the jack body is limited and fixed in the middle position by the two semicircular blocks, and the jack body is fixed by the two semicircular blocks under the action of the two non-slip mats. According to the thin coal seam pushing jack, the limiting and fixing effects are improved, operation is easy, the jack can be fixed and limited on the pushing plate, and the stability and safety of the thin coal seam pushing jack in the working process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of jacks, in particular to a fixing structure of a thin coal seam pushing jack. Background Art

[0002] A thin coal seam refers to a mineral seam with a relatively thin thickness, usually less than 1.3 meters. Due to the thin thickness of the coal seam, traditional coal mining methods such as longwall mining or fully mechanized caving mining are difficult to implement in thin coal seams. Using a jack to push the thin coal seam is a mining method suitable for thin coal seams. This method uses a jack mechanism to push the coal seam forward to achieve coal mining. The jack mechanism is usually composed of a hydraulic system or a mechanical device, which can provide sufficient thrust to push the coal seam.

[0003] In the prior art, when the jack is pushing a thin coal seam, it needs to have sufficient stability and strength to withstand the thrust and pressure in coal mining. However, due to the complex fixing structure of the existing jack and its low practicality, the stability and safety of the jack when pushing a thin coal seam cannot be ensured. Utility Model Content

[0004] The utility model aims to solve the problem that the existing equipment cannot ensure the stability and safety of the thin coal seam pushing jack when in use, and proposes a fixing structure of the thin coal seam pushing jack.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fixing structure of a thin coal seam push jack, including a push plate, two fixed plates are fixedly installed on the top of the push plate, one side of the outer wall of the two fixed plates is threadedly connected with a screw, one side of the outer wall of the two screws is fixedly installed with a handle, the other side of the outer wall of the two screws is rotatably connected with a movable plate, one side of the outer wall of the two movable plates is fixedly installed with a connecting plate, one side of the outer wall of the two connecting plates is fixedly installed with a semicircular block, one side of the outer wall of the two semicircular blocks is fixedly installed with an anti-slip pad, and a jack body is placed on the top of the push plate.

[0006] Preferably, four limiting grooves are formed on the top of the push plate, limiting blocks are movably embedded in the inner surface walls of the four limiting grooves, and the tops of the four limiting blocks are fixedly connected to the bottoms of the two movable plates.

[0007] Preferably, positioning blocks are fixedly mounted on one side of the outer wall of the two movable plates, and strip blocks are fixedly mounted on the top of the two connecting plates.

[0008] Preferably, one side of the outer wall of the two bar-shaped blocks is provided with a positioning hole, and the outer walls of the two positioning blocks are movably inserted into the two positioning holes.

[0009] Preferably, four rectangular blocks are fixedly mounted on one side of the outer wall of the two movable plates, and two mounting strips are fixedly mounted on the outer wall of the two connecting plates.

[0010] Preferably, two rectangular holes are provided on one side of the outer walls of the four mounting strips, and the outer walls of the eight rectangular blocks are movably inserted into the eight rectangular holes.

[0011] Preferably, two circular holes are provided on one side of the outer walls of the four mounting strips, the outer walls of the eight rectangular blocks are threadedly connected with fixing screws, and the outer walls of the eight fixing screws are movably inserted into the eight circular holes.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] In the utility model, the jack is placed at a suitable position on the push plate, and then the two handles are turned. Under the action of the four limit grooves and the four limit blocks, the two screw rods and the two movable plates are driven to move stably relative to each other until the two semicircular blocks limit and fix the jack body at the middle position. Under the action of the two anti-slip pads, the limiting and fixing effect is improved, and the operation is simple, so that the jack can be fixed on the push plate, thereby improving the stability and safety of the jack when pushing thin coal seams.

[0014] In the utility model, through the functions of two positioning blocks, two strip blocks and two positioning holes, the two connecting plates can be accurately sleeved on the corresponding positions, and then the two connecting plates are sleeved on the eight rectangular blocks through four mounting strips and eight rectangular holes. Under the action of eight fixing screws, the two connecting plates are passed through the eight circular holes and fixed in the eight rectangular blocks, so that the two connecting plates and the two semicircular blocks with anti-skid pads are installed on the moving plate, and then the semicircular blocks and anti-skid pads of corresponding sizes can be replaced according to the size of the jack, so that jacks of different sizes can be limited and fixed on the push plate, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a fixing structure of a thin coal seam push jack is proposed for the utility model;

[0016] Figure 2 A front view of a fixing structure of a thin coal seam pushing jack is provided for the utility model;

[0017] Figure 3 A partial exploded diagram of a fixing structure of a thin coal seam push jack is proposed for the utility model;

[0018] Figure 4 The utility model provides a partially expanded schematic diagram of a fixing structure of a thin coal seam pushing jack.

[0019] Legend:

[0020] 1. Sliding plate; 2. Fixed plate; 3. Screw; 4. Handle; 5. Moving plate; 6. Connecting plate; 7. Semicircular block; 8. Anti-skid pad; 9. Jack body; 10. Limiting groove; 11. Limiting block; 12. Positioning block; 13. Strip block; 14. Positioning hole; 15. Rectangular block; 16. Mounting strip; 17. Rectangular hole; 18. Round hole; 19. Fixing screw. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purposes, features and advantages of the utility model, the utility model is further described below in conjunction with the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Embodiment 1, as Figure 1-Figure 4 As shown, the utility model provides a fixing structure of a thin coal seam push jack, including a push plate 1, two fixed plates 2 are fixedly installed on the top of the push plate 1, one side of the outer wall of the two fixed plates 2 is threadedly connected with a screw 3, one side of the outer wall of the two screws 3 is fixedly installed with a handle 4, the other side of the outer wall of the two screws 3 is rotatably connected with a movable plate 5, one side of the outer wall of the two movable plates 5 is fixedly installed with a connecting plate 6, one side of the outer wall of the two connecting plates 6 is fixedly installed with a semicircular block 7, one side of the outer wall of the two semicircular blocks 7 is fixedly installed with an anti-slip pad 8, a jack body 9 is placed on the top of the push plate 1, four limit grooves 10 are opened on the top of the push plate 1, the inner surface walls of the four limit grooves 10 are movably embedded with limit blocks 11, and the tops of the four limit blocks 11 are fixedly connected to the bottoms of the two movable plates 5.

[0024] The effect achieved by the entire embodiment 1 is that when a jack is needed to push a thin coal seam, the jack is first placed at a suitable position on the pushing plate 1, and then the handle 4 installed on one side of the outer wall of the two screw rods 3 is rotated. Since the other sides of the outer walls of the two screw rods 3 are rotatably connected to the movable plate 5, four limit grooves 10 are also provided on the pushing plate 1, and the four limit blocks 11 installed at the bottom of the two movable plates 5 are movably embedded in the four limit grooves 10, so that the two movable plates 5 can move relative to each other stably. In addition, because a connecting plate 6 is detachably connected to one side of the two movable plates 5, a semicircular block 7 with an anti-skid pad 8 is installed on one side of the two connecting plates 6, the two semicircular blocks 7 with anti-skid pads 8 can be moved relative to each other, and the jack can be limited and fixed in the middle position on the pushing plate 1 through the relative movement of the two semicircular blocks 7 with anti-skid pads 8. In addition, the operation is simple and the fixation is reliable, which improves the stability and safety of the jack when pushing the thin coal seam.

[0025] Embodiment 2, as Figure 2-Figure 4 As shown, a positioning block 12 is fixedly installed on one side of the outer wall of the two movable plates 5, a strip block 13 is fixedly installed on the top of the two connecting plates 6, a positioning hole 14 is opened on one side of the outer wall of the two strip blocks 13, and the outer walls of the two positioning blocks 12 are movably inserted in the two positioning holes 14, four rectangular blocks 15 are fixedly installed on one side of the outer wall of the two movable plates 5, two mounting strips 16 are fixedly installed on the outer wall of the two connecting plates 6, two rectangular holes 17 are opened on one side of the outer wall of the four mounting strips 16, and the outer walls of the eight rectangular blocks 15 are movably inserted in the eight rectangular holes 17, two circular holes 18 are opened on one side of the outer wall of the four mounting strips 16, the outer walls of the eight rectangular blocks 15 are threadedly connected with fixing screws 19, and the outer walls of the eight fixing screws 19 are movably inserted in the eight circular holes 18.

[0026] The effect achieved by the entire embodiment 2 is that, since positioning blocks 12 are installed on the two movable plates 5, strip blocks 13 are installed on the tops of the two connecting plates 6, and the two strip blocks 13 are sleeved on the two positioning blocks 12 through two positioning holes 14 opened on one side of their outer walls, it is convenient to quickly place the two connecting plates 6 in corresponding positions, and because four rectangular blocks 15 are installed on one side of the outer walls of the two movable plates 5, two mounting strips 16 are installed on the outer walls of the two connecting plates 6, and the four mounting strips 16 are sleeved on the eight rectangular blocks 15 through eight rectangular holes 17, and then under the action of eight fixing screws 19, they pass through the two circular holes 18 opened on one side of the outer walls of the four mounting strips 16 and are fixed on the eight rectangular blocks 15, so that the two connecting plates 6 and the two semicircular blocks 7 with anti-skid pads 8 are installed on the movable plate 5, and the semicircular blocks 7 and anti-skid pads 8 of corresponding sizes can be replaced according to the specifications of the jack, so that jacks of different sizes can be limited and fixed on the push plate 1, which is practical.

[0027] Working principle: First, when a jack is needed to push a thin coal seam, the jack is first placed on the push plate 1. According to the size of the jack, the corresponding semicircular block 7 and anti-skid pad 8 are selected, and the two semicircular blocks 7 are installed on the two connecting plates 6. Then, the two connecting plates 6 are sleeved on the positioning blocks 12 installed on the two moving plates 5 through two strip blocks 13 and two positioning holes 14. At this time, the four mounting strips 16 installed on the outer wall of the two connecting plates 6 are sleeved on the eight rectangular blocks 15 on the two moving plates 5 through eight rectangular holes 17, and under the action of eight fixing screws 19, the corresponding connecting plates 6 and the anti-skid pads 8 can be fixed. The semicircular block 7 of the pad 8 is installed on the movable plate 5, and then the two handles 4 are rotated at the same time to drive the two screw rods 3 to rotate and move forward in the two fixed plates 2. Since one side of the two screw rods 3 is rotatably connected to the movable plate 5, and the four limit blocks 11 installed at the bottom of the movable plate 5 are movably embedded in the four limit grooves 10, the two movable plates 5 are driven to move relative to each other stably until the jack is limited and fixed between the two semicircular blocks 7 and the two anti-slip pads 8. The operation process is simple, and jacks of different sizes can be limited and fixed, with high practicality, thereby improving the stability and safety of the jack when pushing thin coal seams.

[0028] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A fixed structure of a thin coal seam push jack, comprising a push plate (1), characterized in that: Two fixed plates (2) are fixedly installed on the top of the push plate (1); one side of the outer wall of the two fixed plates (2) is threadedly connected with a screw rod (3); one side of the outer wall of the two screw rods (3) is fixedly installed with a handle (4); the other side of the outer wall of the two screw rods (3) is rotatably connected with a movable plate (5); one side of the outer wall of the two movable plates (5) is fixedly installed with a connecting plate (6); one side of the outer wall of the two connecting plates (6) is fixedly installed with a semicircular block (7); one side of the outer wall of the two semicircular blocks (7) is fixedly installed with an anti-slip pad (8); and a jack body (9) is placed on the top of the push plate (1).

2. The fixing structure of the thin coal seam push jack according to claim 1 is characterized by: Four limiting grooves (10) are provided on the top of the push plate (1), and limiting blocks (11) are movably embedded in the inner surface walls of the four limiting grooves (10), and the tops of the four limiting blocks (11) are fixedly connected to the bottoms of the two movable plates (5).

3. The fixing structure of the thin coal seam push jack according to claim 2 is characterized by: A positioning block (12) is fixedly mounted on one side of the outer wall of the two movable plates (5), and a strip block (13) is fixedly mounted on the top of the two connecting plates (6).

4. The fixing structure of the thin coal seam push jack according to claim 3 is characterized by: One side of the outer wall of the two bar-shaped blocks (13) is provided with a positioning hole (14), and the outer walls of the two positioning blocks (12) are movably inserted into the inside of the two positioning holes (14).

5. The fixing structure of the thin coal seam push jack according to claim 4 is characterized by: Four rectangular blocks (15) are fixedly mounted on one side of the outer wall of the two movable plates (5), and two mounting strips (16) are fixedly mounted on the outer wall of the two connecting plates (6).

6. The fixing structure of the thin coal seam push jack according to claim 5, characterized in that: Two rectangular holes (17) are provided on one side of the outer wall of the four mounting strips (16), and the outer walls of the eight rectangular blocks (15) are movably inserted into the eight rectangular holes (17).

7. The fixing structure of the thin coal seam push jack according to claim 6, characterized in that: Two circular holes (18) are provided on one side of the outer wall of the four mounting strips (16); the outer walls of the eight rectangular blocks (15) are threadedly connected with fixing screws (19); and the outer walls of the eight fixing screws (19) are movably inserted into the eight circular holes (18).

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