Protective device for coal mine underground guniting
By using protective devices in underground spraying equipment of coal mines, including flat steel, connecting plates, plastic film and U-shaped steel, the problems of operator injuries and material waste during spraying are solved, and operational safety and production efficiency are improved.
Patent Information
- Application Number
- CN202420635901.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-03-29
AI Technical Summary
During the underground spraying process of coal mines, high wind pressure causes small gravel, sand, cement and other materials to rebound, which easily hurts the operator. Moreover, since sand and cement are sprayed out under the wind pressure, it is difficult for operators to clearly see the spraying position. , resulting in safety hazards and waste of materials.
A protective device is designed, including horizontally arranged flat steel, vertical connecting plates, transparent rectangular plastic film and U-shaped steel to fix the spray head and protect the operator's eyes and block foreign objects, ensuring that the operator can clearly see the spraying. point.
It effectively reduces safety hazards for operators, saves materials, improves production efficiency, reduces labor costs, and achieves the effect of repairing old and scrap.
Smart Images
Figure CN222254050U_ABST
Abstract
Description
[Technical field]
[0001] The utility model belongs to the technical field of coal mine grouting, and in particular relates to a protective device for underground coal mine grouting. [Background technology]
[0002] The tunnel needs to be constructed in accordance with standardization. After the tunnel is opened and excavated, spraying work is required. Due to the high wind pressure during spraying, the sprayed pebbles, sand, and cement will rebound to the side and easily injure the face and eyes of the sprayers. Furthermore, during the spraying work, the sand, cement, and gravel are sprayed out under the drive of wind pressure and are basically invisible. The eyes of the sprayers are basically half-open and half-closed facing the spraying position. Often a tunnel needs to be sprayed multiple times, and the materials cannot be used reasonably, resulting in material waste. [Contents of the utility model]
[0003] The utility model aims to provide a protective device for underground coal mine grouting, so as to solve the problem that operators are easily injured when a large amount of grouting is sprayed in the existing underground tunnel.
[0004] The utility model adopts the following technical scheme: a protective device for underground grouting in coal mines, comprising a horizontally arranged flat steel, which is a steel plate; two connecting plates are arranged vertically and in parallel above the flat steel, and a vertically arranged plastic film is connected to the rear of the two connecting plates, and the plastic film is a transparent rectangular plate used to block foreign matter;
[0005] The invention also comprises a U-shaped steel which surrounds the spray head of the spray pipe and is connected to the flat steel and is used for fixing the spray head under the flat steel.
[0006] In some embodiments, the tops of the two connecting plates are detachably connected to the plastic film by bolts.
[0007] In some embodiments, the two free ends of the U-shaped steel have threaded structures, and the two free ends of the U-shaped steel are locked to the top of the flat steel by nuts.
[0008] The beneficial effect of the utility model is that a plastic film for eye protection is processed in front of the nozzle by modification and fixed on the nozzle, so that the nozzle operator can watch the spraying point intently, reducing safety hazards and saving materials.
[0009] In addition to potential safety hazards, it reduces labor intensity, improves production efficiency, saves labor costs, and achieves the purpose of repairing old things and making use of waste.
Brief Description of the Drawings
[0010] Figure 1 It is a structural schematic diagram of the utility model.
[0011] Among them, 1. plastic film, 2. connecting plate, 3. flat iron, 4. nozzle, 5. U-shaped steel. [Specific implementation method]
[0012] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.
[0013] The utility model provides a protective device for underground grouting in coal mines, such as Figure 1 As shown, it includes a horizontally arranged flat steel 3, which is a steel plate; two connecting plates 2 are arranged vertically and in parallel above the flat steel 3, and a vertically arranged plastic film 1 is connected to the rear of the two connecting plates 2, and the plastic film 1 is a transparent rectangular plate used to block foreign objects.
[0014] It also includes a U-shaped steel 5 that surrounds the nozzle 4 of the spraying pipe and is finally connected to the flat steel 3 to fix the nozzle 4 of the spraying pipe to the bottom of the flat steel 3.
[0015] In some embodiments, the tops of the two connecting plates 2 are detachably connected to the plastic film 1 by bolts.
[0016] In some embodiments, the two free ends of the U-shaped steel 5 have a threaded structure, and the two free ends of the U-shaped steel 5 are locked to the top of the flat steel 3 by nuts.
[0017] The utility model is a method for using a protective device for underground coal mine grouting: when a large amount of grouting is required after the underground tunnel is excavated, a protective device for underground coal mine grouting is installed outside the nozzle 4 of the grouting pipe, and a plastic film 1 is placed in front of the operator's face area as a shield. During the grouting process, if the wind pressure is high during the grouting, the pebbles and sand and ash sprayed out will hit the side and rebound, and will hit the plastic film 1, so that the face and eyes of the personnel will not be injured, making the grouting process safer. It also avoids the problem of material loss and waste due to the inability to directly see the grouting position.
[0018] In actual use, for example, a small shift sprays 9 truckloads of sand and cement together, and 2-3 truckloads fall on the ground and can no longer be used as spraying materials. The average cost of one truckload of material is 300 yuan, 2 truckloads of 600 yuan for a full shift is 1,800 yuan, 30 days a month * 1,800 yuan a day. After using the protective device for underground spraying in coal mines of the utility model, the spraying process is more precise, the waste of materials is reduced, and about 54,000 yuan can be saved each month.
Claims
1. A protective device for underground coal mine grouting, characterized in that: It comprises a horizontally arranged flat steel (3), wherein the flat steel (3) is a steel plate; two connecting plates (2) are arranged vertically and in parallel above the flat steel (3), and a vertically arranged plastic film (1) is connected to the rear of the two connecting plates (2), wherein the plastic film (1) is a transparent rectangular plate used to block foreign matter; It also includes a U-shaped steel (5) which surrounds the nozzle (4) of the spraying pipe and is connected to the flat steel (3) for fixing the nozzle (4) to the bottom of the flat steel (3).
2. A protective device for underground coal mine grouting as claimed in claim 1, characterized in that: The tops of the two connecting plates (2) are detachably connected to the plastic film (1) via bolts.
3. A protective device for underground coal mine grouting as claimed in claim 1 or 2, characterized in that: The two free ends of the U-shaped steel (5) have a threaded structure, and the two free ends of the U-shaped steel (5) are locked to the top of the flat steel (3) through nuts.