Safety protection device for mine draw shaft brush expanding operation

Abstract

The utility model discloses a safety protection device for mine draw shaft brush expanding operation, and relates to the technical field of mine draw shaft brush expanding, the safety protection device comprises a soil layer and three steel wire ropes, the bottom ends of the left and right steel wire ropes are fixedly connected with suspension ropes I, the bottom ends of the suspension ropes I are provided with double-layer discs, and the double-layer discs are fixedly connected with the soil layer. And an integration plate is arranged at the bottom end of the double-layer plate. The inner well mouth sealing device has the main advantages that through the double-layer disc, the adjustable limiting supporting rod, the second channel steel frame, the second supporting rod sleeve and the integration disc, the inner well mouth can be sealed in the downward moving process of the double-layer disc, and therefore labor and a large amount of time for temporary sealing installation and detachment of the inner well mouth during winze expanding and brushing operation are saved. By saving the mounting and dismounting time, the construction period of winze brush expanding operation can be remarkably shortened, so that the project progress is accelerated, and the overall construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine chute expansion and brushing, in particular to a safety protection device for mine chute expansion and brushing operations. Background Art

[0002] During mine construction, various types of chutes are primarily used to transport waste rock from the upper middle section to the lower middle section, reducing the workload of machinery transporting equipment over long distances and across the middle section. These include various types of underground shafts, including reverse ventilation shafts, manholes, cable shafts, and waste rock chutes. Currently, the primary construction technique is reverse drilling, which involves using a drill to pilot a hole. Once the pilot hole is completed, a cutterhead is suspended at the bottom, where it rotates and cuts the hole, gradually building the shaft upwards.

[0003] However, the existing well construction process, where the diameter of the wellbore created by raise boring is generally less than 3 meters, cannot meet the functional requirements of some chute systems. Therefore, the most commonly used construction technique is to expand the chute from top to bottom. This involves drilling vertical holes around the existing chute wall according to the desired diameter. Then, explosive blasting is used to expand the chute to the desired diameter. This method is continued step by step until the bottom of the chute is reached. However, this downward expansion process currently relies primarily on manual labor. Because the existing wellbore diameter is generally over 2 meters, the wellhead must be sealed during the operation to ensure safety and prevent personnel and tools from accidentally falling into the wellbore and causing accidents. The most common method currently involves personnel arriving at the work surface in a cage, securing themselves with safety harnesses, and then temporarily sealing the existing wellbore using channel steel and steel mesh. Once the sealing is complete and safety is confirmed, drilling and charging proceed. Before blasting, the temporary seal is removed, and personnel and materials are hoisted to the upper wellhead. Finally, blasting is carried out, and this cycle repeats.

[0004] However, the above-mentioned existing operation process still has the problem of temporary closure before each operation, which needs to be dismantled before blasting, and the workload of material transportation and personnel installation and dismantling is large. By changing the temporary closure measures in the wellbore to an integrated wellhead sealing plate, the effect of inner wellhead sealing can be achieved, thereby saving labor and a lot of time for installation and dismantling of the temporary closure of the inner wellhead during the well chute expansion and flushing operation, and significantly improving work efficiency.

[0005] However, the existing charging process requires manual pre-drilling and then manually filling each hole with gunpowder. This manual filling requires precise control of the charge quantity, charge placement, and charging method to ensure the blasting effect. This process is complex, requires high-level skills, and is susceptible to human error. Utility Model Content

[0006] The purpose of the utility model is to solve the shortcomings of the existing technology and propose a safety protection device for mine chute expansion and brushing operations, which solves the problems of temporary closure before each operation, dismantling before blasting, and the large workload of material transportation and personnel installation and dismantling.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A safety protection device for mine chute expansion and brushing operations includes a soil layer and steel wire ropes. Three steel wire ropes are provided, with the bottom ends of two left and right steel wire ropes fixedly connected to a suspension rope. The bottom ends of the suspension ropes are provided with a double-layer disc, and the bottom ends of the double-layer discs are provided with an integrated disc. The integrated disc is used to save labor and time for temporarily installing and removing the inner wellhead during chute expansion and brushing operations. This significantly improves work efficiency and the on-site safety environment, prevents falls of personnel and tools, and effectively enhances the safety factor of the operation.

[0009] As a further improvement of the present invention, an outer wellhead is opened inside the top of the soil layer, an inner wellhead is opened inside the soil layer at the bottom of the outer wellhead, and a plurality of gunpowder holes are opened on the top surface of the soil layer.

[0010] As a further improvement of the present invention, the bottom end of the steel wire rope in the middle is fixedly connected to a hoist cage, the bottom of the suspension rope is provided with a support rod sleeve 1, the bottom end of the support rod sleeve 1 is fixedly connected to a channel steel frame 1, the channel steel frame 1 is fixedly connected to the top of the double-layer disk, and the bottom end of the double-layer disk is symmetrically fixedly connected to two adjustable limit support rods, and the bottom end of each adjustable limit support rod is sleeved with a second support rod sleeve. This has a connecting effect on the integrated disk.

[0011] As a further improvement of the present invention, the bottom end of the second support rod sleeve is fixedly connected to a second channel steel frame, which is fixedly connected to the top of the integrated disk. The middle of the integrated disk is provided with a steel mesh support surface, and the outer top of the integrated disk is evenly provided with a plurality of gunpowder inlets, thereby allowing for the pre-loading of gunpowder powder.

[0012] As a further improvement of the present invention, the integrated disc is fixedly connected to a squeeze tube at the bottom end of the powder inlet, a powder storage tank is defined within the top end of the squeeze tube, a powder outlet tank is defined on the inner wall of the bottom end of the powder storage tank, a telescopic tube is fixedly connected to the top end of the inner wall of the squeeze tube, and a powder outlet cartridge is fixedly connected to the bottom end of the telescopic tube, thereby preventing premature discharge of powder before the squeeze tube is pressed down.

[0013] As a further improvement of the present invention, a powder inlet groove is formed through the outer surface of each of the pyrotechnic cartridges, a spring is provided at the center of each of the telescopic tubes, the top end of each of the springs is fixedly connected to the top end of the inner wall of the extrusion tube, and the bottom end of each of the springs is fixedly connected to the top end of the pyrotechnic cartridge, and an outlet is provided at the bottom end of each of the pyrotechnic cartridges. This allows the pyrotechnic cartridges to automatically refill the pyrotechnic cartridges with gunpowder after the extrusion tubes have completed the opening of the pyrotechnic eye and the retraction process.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. A wire rope drives the first channel steel frame downward, thereby driving the double-layer disc downward. Since the integrated disc and the double-layer disc are connected by the adjustable limit strut, the second channel steel frame, and the second strut sleeve, the downward movement of the wire rope drives the integrated disc downward. This seals the inner wellhead during the downward movement of the double-layer disc, thereby saving the labor and significant time required to install and remove the temporary seal during the well expansion and brushing operation. By reducing installation and removal time, the well expansion and brushing operation can be significantly shortened, accelerating the project schedule and improving overall construction efficiency. Furthermore, the installation and removal of the temporary seal involves working at height and carrying heavy objects, which poses certain safety risks. Saving time means reducing the number and duration of these high-risk operations, thereby reducing construction risks.

[0016] 2. Through the extrusion tube, gunpowder storage tank, gunpowder discharge cartridge, and gunpowder inlet trough, the gunpowder discharge cartridge contacts the top of the gunpowder hole, pressing the gunpowder discharge cartridge into the extrusion tube. Once the extrusion tube and gunpowder discharge cartridge have been pressed downward against the soil, the gunpowder will also enter the gunpowder discharge cartridge. At this time, the extrusion tube is controlled away from the gunpowder hole, allowing the gunpowder to leak from the outlet into the gunpowder hole. This achieves the goal of simultaneously injecting gunpowder into the hole after drilling is completed. Immediate gunpowder injection after drilling reduces waiting time, making the construction process more streamlined and improving overall construction efficiency. Prompt loading and blasting after drilling is completed also ensures continuous operation and reduces downtime caused by waiting for loading or blasting. Furthermore, immediate gunpowder injection ensures sufficient diffusion of the explosives within the hole, fully utilizing the explosives' energy and improving the blasting effect. Immediate gunpowder injection after drilling also reduces the time the explosives are exposed to air, reducing the safety risks caused by accidental explosions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] Figure 2 For this utility model Figure 1 Schematic diagram of the cross-sectional structure of the middle soil layer.

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the soil layer in the utility model.

[0020] Figure 4 This is a schematic structural diagram of the steel wire rope, hoist cage and extruded tube in the utility model.

[0021] Figure 5 For this utility model Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of the extruded tube of the present utility model.

[0023] Figure 7 For this utility model Figure 6 Schematic diagram of the structure from another angle.

[0024] In the figure: 101, soil layer; 102, outer wellhead; 103, inner wellhead; 104, powder eye; 201, steel wire rope; 202, hoisting cage; 203, suspension rope one; 204, support rod sleeve one; 205, double-layer disk; 206, channel steel frame one; 207, adjustable limit support rod; 208, channel steel frame two; 209, support rod sleeve two; 210, integrated disk; 211, powder inlet; 212, steel mesh support surface; 301, extrusion tube; 302, powder storage tank; 303, powder outlet tank; 304, telescopic tube; 305, powder outlet cartridge; 306, powder inlet tank; 307, spring; 308, outlet. DETAILED DESCRIPTION

[0025] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0027] As shown in the figure, a safety protection device for mine chute expansion and brushing operations includes a double-layer disk 205, an adjustable limit support rod 207, an integrated disk 210, a steel mesh support surface 212, a gunpowder storage tank 302, a gunpowder discharge cartridge 305 and a spring 307.

[0028] First, the worker injects the gunpowder powder into the gunpowder storage tank 302 through the gunpowder inlet 211. Since the gunpowder inlet tank 306 is far away from the gunpowder outlet tank 303 in the normal state, the telescopic tube 304 can prevent the gunpowder from overflowing from the gunpowder outlet tank 303 at this time, thereby preparing the gunpowder in advance to facilitate the subsequent direct injection of gunpowder into the gunpowder eye 104.

[0029] When all the gunpowder storage tanks 302 are filled with gunpowder, the three steel wire ropes 201 are controlled to move downward. Since the middle steel wire rope 201 is fixedly connected to the cage 202, and the steel wire ropes 201 on both sides are connected to the double-layer disc 205 through the suspension rope 203, the support rod sleeve 204 and the channel steel frame 206, the downward movement of the steel wire rope 201 will drive the cage 202 and the double-layer disc 205 to move downward at the same time. Since the bottom end of the double-layer disc 205 is fixedly connected to the adjustable limit support rod 207, and the adjustable limit support rod 207 is fixedly connected to the bottom end of the double-layer disc 205, the adjustable limit support rod 207 is fixedly connected to the bottom end of the double-layer disc 205. The section limit strut 207 is inserted into the interior of the strut sleeve 209, and the strut sleeve 209 is fixedly connected to the top of the channel steel frame 208. The bottom end of the channel steel frame 208 is fixedly connected to the integrated disk 210, so that the downward movement of the double-layer disk 205 will simultaneously drive the integrated disk 210 to move downward, thereby achieving a sealing effect on the inner wellhead 103 during the downward movement of the double-layer disk 205, thereby saving labor and a lot of time for temporary sealing, installation and removal of the inner wellhead 103 during the well expansion and brushing operation.

[0030] When the integrated disk 210 moves downward, the extrusion tube 301 and all the components inside it will move downward. When the ignition powder cartridge 305 contacts the soil layer 101, the ignition powder cartridge 305 will be squeezed into the extrusion tube 301 by the reaction force of the soil layer 101. The spring 307 inserted at the top of the ignition powder cartridge 305 will undergo elastic deformation, and the telescopic tube 304 will move upward under the drive of the ignition powder cartridge 305. When the powder inlet trough 306 is flush with the powder outlet trough 303, the gunpowder powder inside the powder storage tank 302 will enter the ignition powder cartridge 305 through the powder outlet trough 303 and the powder inlet trough 306. At this time, the bottom end of the powder outlet 305 is exactly flush with the bottom end of the extrusion tube 301. The soil layer 101 is squeezed together, and when the squeezing tube 301 completely enters the soil layer 101, a gunpowder hole 104 will be opened through the squeezing tube 301. When the operator completes the inner wellhead operation, the integrated disk 210 is controlled to move upward by the wire rope 201. At this time, the gunpowder inside the gunpowder barrel 305 will leak into the gunpowder hole 104 through the bottom outlet 308, and under the rebound effect of the spring 307, the telescopic tube 304 will close the gunpowder groove 303 again to prevent the gunpowder from leaking out. In this way, gunpowder can be injected into the hole at the same time after the drilling is completed. The gunpowder can be injected immediately after the drilling is completed, which can reduce the waiting time and make the construction process more compact, thereby improving the overall construction efficiency.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A safety protection device for mine chute expansion and brushing operations, comprising a soil layer (101) and a steel wire rope (201), characterized in that: Three steel wire ropes (201) are provided, and the bottom ends of the left and right steel wire ropes (201) are fixedly connected to a suspension rope 1 (203), and the bottom end of the suspension rope 1 (203) is provided with a double-layer disk (205), and the bottom end of the double-layer disk (205) is provided with an integrated disk (210). The integrated disk (210) is used to save labor and time for temporarily closing, installing and removing the inner wellhead (103) during the well expansion and brushing operation.

2. A safety protection device for mine chute expansion and brushing operations according to claim 1, characterized in that: An outer wellhead (102) is provided inside the top of the soil layer (101), an inner wellhead (103) is provided inside the soil layer (101) at the bottom of the outer wellhead (102), and a plurality of gunpowder holes (104) are provided on the top surface of the soil layer (101).

3. A safety protection device for mine chute expansion and brushing operations according to claim 1, characterized in that: The bottom end of the steel wire rope (201) in the middle is fixedly connected to the cage (202), the bottom of the suspension rope (203) is provided with a support rod sleeve (204), the bottom end of the support rod sleeve (204) is fixedly connected to a channel steel frame (206), the channel steel frame (206) is fixedly connected to the top of the double-layer disk (205), and the bottom end of the double-layer disk (205) is symmetrically fixedly connected to two adjustable limit support rods (207), and the bottom ends of the adjustable limit support rods (207) are both sleeved with support rod sleeves (209).

4. A safety protection device for mine chute expansion and brushing operations according to claim 3, characterized in that: The bottom end of the second support rod sleeve (209) is fixedly connected to the second channel steel frame (208), and the second channel steel frame (208) is fixedly connected to the top of the integration disk (210). The middle of the integration disk (210) is provided with a steel mesh support surface (212), and the outer top of the integration disk (210) is evenly provided with a plurality of gunpowder inlets (211).

5. A safety protection device for mine chute expansion and brushing operations according to claim 4, characterized in that: The integrated disk (210) is fixedly connected to an extrusion tube (301) at the bottom end of the powder inlet (211), a powder storage tank (302) is provided inside the top end of the extrusion tube (301), a powder outlet tank (303) is provided on the inner wall of the bottom end of the powder storage tank (302), a telescopic tube (304) is fixedly connected to the top end of the inner wall of the extrusion tube (301), and a powder outlet cartridge (305) is fixedly connected to the bottom end of the telescopic tube (304).

6. A safety protection device for mine chute expansion and brushing operations according to claim 5, characterized in that: The outer surface of the firing powder barrel (305) is provided with a powder inlet groove (306) extending through it, and a spring (307) is provided at the center of the telescopic tube (304). The top end of the spring (307) is fixedly connected to the top end of the inner wall of the extrusion tube (301), and the bottom end of the spring (307) is fixedly connected to the top end of the firing powder barrel (305). The bottom end of the firing powder barrel (305) is provided with an outlet (308).

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