Safety protection device for metal mine

Abstract

This utility model discloses a safety protection device for metal mines, belonging to the technical field of safety protection devices. Its main frame has a storage compartment fixedly connected to its upper part. Hydraulic devices, fixedly connected to the frame, are arranged around the storage compartment. The hydraulic devices are L-shaped and include an outer shell fixed to the frame. A bottom channel is fixedly connected to the lower part of the inner side of the outer shell, and a lower shaft is slidably connected within the bottom channel. A limit ring is slidably fixedly connected to the lower part of the inner side of the outer shell in a vertical direction. An upper shaft is slidably connected to the upper part of the inner side of the outer shell, and a dome is fixedly connected to one end of the upper shaft. The pressure on the dome is distributed to the hydraulic devices and crossbars on both sides. The hydraulic devices also move the upper shaft downwards, causing the lower shaft to extend and insert into the side walls of the mine tunnel, delaying the dome's descent and providing workers inside the frame with a longer escape time.

Description

Technical Field

[0001] This utility model belongs to the technical field of safety protection devices, and more specifically, it relates to a safety protection device for metal mines. Background Technology

[0002] During the mining process, it is often necessary to install protective netting above the mine tunnel to prevent falling rocks from injuring workers. Generally, protective netting is installed after the tunnel has been excavated to a certain length. However, as workers continue mining, falling rocks are inevitable, causing injury. Large rocks pose an even greater danger. Therefore, this invention aims to solve the problem of how to prevent falling rocks from harming workers and increase their escape time.

[0003] To address the aforementioned technical problems, this application proposes a solution. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a safety protection device for metal mines. The device pressure on the dome is distributed to the hydraulic devices and crossbars on both sides. The hydraulic devices will move the upper shaft downward, so that the lower shaft extends and inserts into the side walls on both sides of the mine tunnel, which delays the time of the dome's descent and provides workers inside the frame with a longer escape time.

[0005] The aforementioned safety protection device for metal mines includes a frame, a storage compartment fixedly connected to the upper part of the frame, and hydraulic devices fixedly connected to the frame around the storage compartment. The hydraulic device is generally L-shaped. The hydraulic device includes a housing fixed to the frame. A bottom channel is fixedly connected to the lower part of the inner side of the housing. A lower shaft is slidably connected in the bottom channel. A limit ring is slidably fixedly connected to the lower part of the inner side of the housing in the vertical direction. An upper shaft is slidably connected to the upper part of the inner side of the housing. A dome is fixedly connected to one end of the upper shaft.

[0006] Preferably, the upper part of the dome is semi-circular and hollow inside. The bottom of the dome is fixedly connected to the upper shaft around its perimeter. Fixed blocks are fixedly connected to both ends of the bottom of the dome along its length. A shaft is fixedly connected to the inside of each fixed block on the side closest to the inside of the dome.

[0007] Preferably, a second shaft is fixedly connected to the upper part of the frame on both sides of the width direction of the storage compartment, and a cross rod is fixedly connected to the two second shafts on the same side. The upper part of the cross rod is fixedly connected to the first shaft. Preferably, Preferably, an opening is provided at the bottom of one side of the storage compartment, and a baffle is slidably connected to the opening. A conveyor belt is driven to the other side of the storage compartment. A gear one is fixedly connected to the drive shaft of the conveyor belt near the opening. Gear two and gear three are rotatably connected to the wall of the storage compartment near gear one. Gear one and gear two are meshed and driven, and gear two and gear three are meshed and driven. A handle two is fixedly connected to one side of gear three.

[0008] Preferably, side railings are fixedly connected to both sides of the frame along its length, and multiple hooks are fixedly connected to the upper part and both sides of the frame along the side railings. Protective nets are fixedly connected to the hooks, and a front railing is fixedly connected to the bottom of one end of the frame along its width.

[0009] Preferably, the protective netting can be made of nylon or steel wire, and the height of the front guardrail accounts for one-third of the total frame height.

[0010] Preferably, a handle is rotatably connected to the upper frame of the front guardrail, and the handle can rotate only 0 to 90 degrees.

[0011] Preferably, lockable casters are fixedly connected to the four corners of the bottom of the frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model adopts a semi-circular dome design to better distribute the pressure of the device on the dome to the hydraulic devices and crossbars on both sides. The hydraulic devices will move the upper shaft downward, so that the lower shaft extends and inserts into the side walls on both sides of the mine tunnel, delaying the descent of the dome and providing workers inside the frame with a longer escape time. In addition, a storage compartment is designed in the upper part of the frame to store safety protective equipment, which is convenient for workers to use.

[0013] 2. This utility model features side railings and protective netting on both sides to prevent impact from large and small fragments respectively. Since small fragments fall more frequently, the protective netting is fixed by suspension for easy replacement. A front railing is installed at the front of the frame to prevent leg injuries from falling ore during operation. The mechanical mechanism used in this utility model is highly safe, with few complex structures, making it less prone to problems. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model after the protective netting has been removed; Figure 3 for Figure 2 Enlarged structural diagram of part A in the middle; Figure 4 This is a schematic diagram of the structure of this utility model after the dome has been removed; Figure 5 for Figure 4 A magnified structural diagram of part B in the middle section; Figure 6 This is a schematic diagram of the structure of the dome and the hydraulic device in this utility model; Figure 7 This is a cross-sectional structural diagram of the dome and hydraulic device in this utility model.

[0015] In the diagram: 1. Dome; 101. Fixing block; 102. Shaft 1; 2. Hydraulic device; 201. Upper shaft; 202. Outer shell; 2021. Limiting ring; 2022. Bottom channel; 203. Lower shaft; 3. Protective net; 4. Frame; 401. Hook; 402. Handle 1; 403. Storage compartment; 404. Shaft 2; 405. Conveyor belt; 406. Opening; 407. Baffle; 408. Gear 1; 409. Gear 2; 4010. Gear 3; 4011. Handle 2; 5. Lockable caster wheel; 6. Front guardrail; 7. Side guardrail; 8. Crossbar. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings: The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] like Figures 1 to 7 As shown, a safety protection device for metal mine shafts includes a frame 4, with a storage bin 403 fixedly connected to the upper part of the frame 4. Hydraulic devices 2, fixedly connected to the frame 4, are provided around the storage bin 403. Figure 7 As shown, the hydraulic device 2 is generally L-shaped. The hydraulic device 2 includes a housing 202 fixed to the frame 4. A bottom channel 2022 is fixedly connected to the lower inner side of the housing 202. A lower shaft 203 is slidably connected within the bottom channel 2022. A limit ring 2021 is slidably and fixedly connected to the lower vertical inner side of the housing 202. An upper shaft 201 is slidably connected to the upper inner side of the housing 202. One end of the upper shaft 201 is fixedly connected to the dome 1. The upper cavity of the hydraulic device 2 is larger than the bottom channel 2022. This design transfers the pressure on the dome to the lower shaft 203. The smaller diameter of the lower shaft 203 allows it to withstand greater pressure and makes it easier to insert into the walls on both sides of the mine tunnel, preventing or delaying the descent of the dome 1 and providing time for workers to escape.

[0018] The upper part of the dome 1 is semi-circular and hollow inside, leaving space for the storage compartment 403 to place items. The bottom of the dome 1 is fixedly connected to the upper shaft 201 around its perimeter. Fixing blocks 101 are fixedly connected to both ends of the bottom of the dome 1 along its length. Shaft 102 is fixedly connected to the inside of the fixing blocks 101 near the inside of the dome 1.

[0019] like Figure 2 The storage compartment 403 shown has two shafts 404 fixedly connected to the top of the frames 4 on both sides of its width. Two crossbars 8 are fixedly connected to the two shafts 404 on the same side, and the upper part of the crossbars 8 is fixedly connected to the shaft 102. The main function of the crossbars 8 is to support the dome 1 under normal conditions. The crossbars 8 can withstand a relatively small amount of pressure. When the weight of the crushed stone is large, the crossbars 8 cannot support it and will break. At this time, the dome 1 will move downwards, activating the hydraulic device 2. As shown in the figure, an opening 406 is provided at the bottom of one side of the storage compartment 403. A baffle 407 is slidably connected to the opening 406. The function of the baffle 407 is to prevent the safety protective equipment inside the storage compartment 403 from falling and causing injury to the staff. Moreover, the pull-out design makes it easier to retrieve the safety protective equipment. A conveyor belt 405 is connected to the other side of the storage compartment 403. A gear 408 is fixedly connected to the drive shaft of the conveyor belt 405 near the opening 406. Gears 409 and 4010 are rotatably connected to the wall of the storage compartment 403 near gear 408. Gears 408 and 409 are meshed and connected, and gears 409 and 4010 are meshed and connected. A handle 4011 is fixedly connected to one side of gear 4010. The main function of the storage compartment 403 is to store some safety protection equipment, such as safety helmets, miner's lamps, self-rescue devices, dust masks, escape respirators, first aid kits, etc. By using the form of a conveyor belt 405, the above-mentioned safety equipment can be placed on the conveyor belt 405 which is closer to the opening 406. Then, by rotating the handle 4011, the conveyor belt 405 is rotated through the meshing of gears, thereby moving the safety equipment to a position farther away from the opening 406.

[0020] Side railings 7 are fixedly connected to both sides of the frame 4 along its length, such as... Figure 2As shown, the main function of the side guardrail 7 is to provide the main frame 4 with resistance to pressure and deformation, and also to prevent larger ore from falling from both sides of the mine tunnel and causing injury to the workers inside the frame 4. Multiple hooks 401 are fixedly connected to the upper part and both sides of the frame 4 of the side guardrail 7. Protective netting 3 is fixedly connected to the hooks 401. The method of suspending the protective netting 3 using hooks 401 is because small pieces of ore are prone to falling in the mine tunnel. Prolonged impact between the protective netting and the ore can cause damage, and the suspension method facilitates replacement of the protective netting 3. The protective netting 3 can be made of nylon or steel wire. The main function of the protective netting 3 is to protect against smaller pieces of ore falling from the side walls or top of the mine tunnel. The mesh of the protective netting 3 is fine. Nylon or steel wire is chosen because both have good flexibility and are strong. A front guardrail 6 is fixedly connected to the bottom of one end of the frame 4 in the width direction. The height of the front guardrail 6 accounts for one-third of the total height of the frame 4. The purpose of setting up the front guardrail 6 is to prevent workers from being injured by falling ore while they are digging in front of the mine tunnel.

[0021] A handle 402 is rotatably connected to the upper frame 4 of the front guardrail 6. The handle 402 can only rotate from 0 to 90 degrees. Therefore, the handle 402 can only be folded inwards or perpendicular to the frame 4. This is because when the handle 402 is folded, it will not affect the work of the personnel inside the frame 4. When perpendicular, the personnel can push the handle 402 to move the device forward, thus protecting the personnel.

[0022] Lockable casters 5 are fixedly connected to the four corners of the bottom of the frame 4. The lockable casters 5 can lock the frame 4 when it is not moving, preventing the frame 4 from moving arbitrarily and thus ensuring adequate protection for the staff.

[0023] Those skilled in the art can use existing technologies they possess, such as installing appropriate mechanical limit switches or photoelectric sensors, to limit the specified positions of each actuator during the following operation process; to achieve automated operation, this utility model can use numerical control technology or PLC to control the actions of each actuator.

[0024] Working process: This utility model is installed in the section of the mine tunnel before the protective netting is installed on the top of the tunnel. The lockable casters 5 are locked in place, allowing workers to dig in front of the tunnel from inside the frame 4. During mining, ore may fall from the top or side walls of the tunnel due to vibration. At this time, the dome 1 at the top and the protective netting 3 on both sides will protect the workers and prevent injury. If the geological structure in the tunnel is unstable and large pieces of ore fall, they will first impact the dome 1. When the crossbar 8 can no longer support it, it will break, and the dome 1 will move downward, squeezing the hydraulic device 2. The lower shaft 203 at the other end of the hydraulic device 2 will extend outward after being squeezed, slowing down the descent of the dome 1 and facilitating the quick evacuation of the workers.

[0025] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A safety protection device for metal mine shafts, comprising a frame (4), characterized in that: The upper part of the frame (4) is fixedly connected to a storage compartment (403), and the storage compartment (403) is provided with a hydraulic device (2) fixedly connected to the frame (4) around its perimeter. The hydraulic device (2) is generally L-shaped. The hydraulic device (2) includes a housing (202) fixed on the frame (4). A bottom channel (2022) is fixedly connected to the lower part of the inner side of the housing (202). A lower shaft (203) is slidably connected inside the bottom channel (2022). A limit ring (2021) is slidably fixedly connected to the lower part of the inner side of the housing (202) in the vertical direction. An upper shaft (201) is slidably connected to the upper part of the inner side of the housing (202). A dome (1) is fixedly connected to one end of the upper shaft (201).

2. The safety protection device for metal mines according to claim 1, characterized in that: The upper part of the dome (1) is semi-circular and hollow inside. The bottom of the dome (1) is fixedly connected to the upper shaft (201) around the perimeter. Fixing blocks (101) are fixedly connected to both ends of the bottom of the dome (1) along the length direction. A shaft (102) is fixedly connected to the inside of the fixing block (101) near the inside of the dome (1).

3. A safety protection device for metal mines according to claim 2, characterized in that: The storage compartment (403) has a shaft two (404) fixedly connected above the frame (4) on both sides of the width direction. Two cross rods (8) are fixedly connected on the two shaft two (404) on the same side. The upper part of the cross rod (8) is fixedly connected to shaft one (102).

4. A safety protection device for metal mines according to claim 1, characterized in that: The storage compartment (403) has an opening (406) at the bottom of one side, and a baffle (407) is slidably connected to the opening (406). A conveyor belt (405) is connected to the other side of the storage compartment (403). A gear 1 (408) is fixedly connected to the drive shaft of the conveyor belt (405) near the opening (406). A gear 2 (409) and a gear 3 (4010) are rotatably connected to the wall of the storage compartment (403) near the gear 1 (408). The gear 1 (408) and gear 2 (409) are meshed and connected, and the gear 2 (409) and gear 3 (4010) are meshed and connected. A handle 2 (4011) is fixedly connected to one side of the gear 3 (4010).

5. A safety protection device for metal mines according to claim 1, characterized in that: Side railings (7) are fixedly connected to both sides of the frame (4) along its length. Multiple hooks (401) are fixedly connected to the upper part and both sides of the frame (4) of the side railings (7). Protective nets (3) are fixedly connected to the hooks (401). A front railing (6) is fixedly connected to the bottom of one end of the frame (4) along its width.

6. A safety protection device for metal mines according to claim 5, characterized in that: The material of the protective net (3) can be nylon or steel wire, and the height of the front guardrail (6) accounts for one-third of the height of the entire frame (4).

7. A safety protection device for metal mines according to claim 5, characterized in that: A handle (402) is rotatably connected to the frame (4) on the upper part of the front guardrail (6), and the rotation angle of the handle (402) is only 0~90 degrees.

8. A safety protection device for metal mines according to claim 1, characterized in that: Lockable casters (5) are fixedly connected to the four corners of the bottom of the frame (4).

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