Coal mine wall-knocking and top-asking safety device
By designing a safety device for coal mines and using the lever principle and rotating roulette, the problems of labor and safety hazards of workers during the low-coal seam are solved, and safe and efficient coal block knocking operations are achieved, reducing the number of casualty rate.
Patent Information
- Application Number
- CN202421218165.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-30
AI Technical Summary
During the low coal seam knocking and asking questions, workers were unable to stand and limited operating space, which resulted in labor and inefficient operation, and were unable to effectively monitor whether the coal block was stable, which poses serious safety hazards, resulting in a high casualty rate of coal mine workers.
A coal mine strike-and-top safety device is designed, including a protective frame body and a tapping rod. The lever principle and rotating roulette can be used to knock the coal blocks on the bottom coal seam to provide protection and facilitate operation, and prevent the coal block from falling off the coal. Workers cause harm.
It significantly reduces the risk of bottom coal seam knocking and top work, ensures the safety of workers during operation, and improves operating efficiency.
Smart Images
Figure CN222315133U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of underground coal mining, in particular to a coal mine wall knocking and top questioning safety device. Background Art
[0002] Drilling and blasting is often used to excavate hard rock tunnels (tunnels). Before the start of production operations after blasting, it is necessary to use crowbars, steel chisels or pickaxes to knock on the tunnel, working surface roof and side walls, and find floating stones based on the sound, so that they can be pried off in a timely and safe manner to ensure the safety of operators and the normal progress of production operations. Currently.
[0003] Low coal seam knocking refers to knocking on the top of the bottom coal seam. The height of the bottom coal seam is only about 0.5-1 meter. Workers working in the bottom coal seam cannot stand and can only half squat or even lie on the bottom surface. In the process of knocking on the top, a small hammer is used to knock on the top surface. There are generally laborious and inefficient conditions during use. The most important thing is that it is impossible to observe with the eyes whether the coal blocks on the top surface will be knocked off. During the work process, it is very likely that the coal block in front is very firm, while the next coal block is very dangerous and will fall down with a slight touch. Workers are facing dangers that may come at any time without any protection measures. This is why knocking on the top has the highest casualty rate among coal miners. Utility Model Content
[0004] In order to solve the above problems, the purpose of the utility model is to provide a coal mine wall knocking and top questioning safety device.
[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical solutions:
[0006] A coal mine wall and top knocking safety device comprises a protective frame and a knocking rod; a fulcrum is provided on the protective frame, and the knocking rod is movably arranged on the fulcrum. An operator hides behind the protective frame and uses the knocking rod to knock the coal blocks on the top of the bottom coal seam through the lever principle.
[0007] The protective frame is a tripod frame, a movable slot is provided in the middle of the tripod frame, and a support rod is fixed at the top corner of the tripod frame as a fulcrum;
[0008] A through hole is provided in the middle position of the knocking rod in accordance with the diameter of the supporting rod, and the knocking rod is movably fitted on the supporting rod through the through hole.
[0009] The knocking rod comprises a movable part, a knocking part and a use part, wherein the knocking part is fixedly arranged at one end of the movable part, the use part is fixedly arranged at the other end of the knocking part, and the through hole is a long key groove arranged at the movable part.
[0010] A rotating wheel disc is provided at the bottom of the protection frame.
[0011] A handle is provided at one end of the use portion.
[0012] The interior of the tripod body is hollow.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] The device designed by the utility model can carry out the knocking and top-checking operation under the condition of ensuring sufficient safety of the workers, and can greatly reduce the danger of the knocking and top-checking work in the bottom coal seam. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Attached Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0016] Attached Figure 2 It is the actual use diagram in the utility model.
[0017] Attached Figure 3 It is a schematic diagram of a rotating wheel disc being arranged at the bottom of the utility model.
[0018] Attached Figure 4 It is an exploded view of the overall structure of the utility model.
[0019] Attached Figure 5 It is the front view of the tripod body in the utility model.
[0020] Numbers shown in the accompanying drawings:
[0021] 1. Protective frame; 2. Knocking rod; 21. Movable part; 22. Knocking part; 23. Use part; 3. Fulcrum; 4. Tripod body; 5. Movable slot; 6. Support rod; 7. Through hole; 71. Long key slot; 8. Rotating wheel; 9. Handle. DETAILED DESCRIPTION
[0022] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present application.
[0023] See attached Figure 1-5 The utility model is a coal mine knocking safety device, which is intended to protect workers from sudden coal falling when working in the bottom coal seam, wherein the main structure includes a protective frame 1 and a knocking rod 2; a fulcrum 3 is provided on the protective frame 1, and the knocking rod 2 is movably arranged on the fulcrum 3. An operator hides behind the protective frame 1 and uses the knocking rod 2 to knock the coal blocks on the top of the bottom coal seam through the lever principle. See attached drawing. Figure 2As mentioned above, the human body hides in Figure 2 The lever principle is used to knock the position to be tested at position A. Even if coal falls in time, it will not cause harm to the operator at position A.
[0024] The protective frame 1 is a tripod 4, which can form an inclined baffle between the workers and the coal falling area to protect the workers behind the baffle. At the same time, a movable groove 5 is opened in the middle of the tripod 4, and a support rod 6 is fixed at the top corner of the tripod 4 as a fulcrum 3, which can also facilitate the realization of the lever principle.
[0025] A through hole 7 is provided in the middle of the knock rod 2 to match the diameter of the support rod 6. The knock rod 2 is movably fitted on the support rod 6 through the through hole 7, thus forming a lever mechanism.
[0026] See attached Figure 4 The knocking rod 2 includes a movable part 21, a knocking part 22 and a use part 23. The knocking part 22 is fixedly arranged at one end of the movable part 21, and the use part 23 is fixedly arranged at the other end of the knocking part 22. The through hole 7 is a long key groove 71 arranged on the movable part 21. If there is only one through hole 7, then the knocking point of the secondary lever structure is only one point. If you want to knock other positions, you need to move the device as a whole, which will be troublesome. Therefore, the through hole 7 is a long key groove 71 arranged on the movable part 21. At this time, the worker can adjust the position of the support rod 6 in the long key groove 71 to achieve the operation of knocking different positions. At the same time, a rotating wheel 8 is provided at the bottom of the protective frame 1, so that the knocking area will become larger, avoiding frequent moving of the device. A handle 9 is provided at one end of the use part 23. Refer to the attached Figure 2 The knocking operation is achieved by pressing the handle 9 up and down. The interior of the tripod body 4 is hollow to prevent the entire device from being too heavy and affecting its use.
Claims
1. A coal mine knocking and top safety device, characterized by: The invention comprises a protective frame (1) and a knocking rod (2); a fulcrum (3) is provided on the protective frame (1), and the knocking rod (2) is movably arranged on the fulcrum (3); an operator hides behind the protective frame (1) and uses the knocking rod (2) to knock the coal blocks on the top of the bottom coal seam through the principle of leverage.
2. A coal mine knocking and top-checking safety device according to claim 1, characterized in that: The protective frame body (1) is a tripod body (4), a movable groove (5) is provided in the middle of the tripod body (4), and a support rod (6) is fixedly provided at the top corner of the tripod body (4) as a fulcrum (3); A through hole (7) is provided in the middle position of the knocking rod (2) to match the diameter of the support rod (6), and the knocking rod (2) is movably matched on the support rod (6) through the through hole (7).
3. A coal mine knocking and top-checking safety device according to claim 2, characterized in that: The knocking rod (2) comprises a movable part (21), a knocking part (22) and a use part (23); the knocking part (22) is fixedly arranged at one end of the movable part (21), the use part (23) is fixedly arranged at the other end of the knocking part (22), and the through hole (7) is a long key groove (71) arranged on the movable part (21).
4. A coal mine knocking and top-checking safety device according to claim 3, characterized in that: A rotating wheel disc (8) is provided at the bottom of the protection frame body (1).
5. A coal mine knocking and top-checking safety device according to claim 4, characterized in that: A handle (9) is provided at one end of the use portion (23).
6. A coal mine knocking and top-checking safety device according to claim 5, characterized in that: The interior of the tripod body (4) is hollow.