Downward vertical large-diameter deep hole opening protection device

Abstract

The utility model provides a downward vertical large-diameter deep hole opening protection device. The downward vertical large-diameter deep hole opening protection device comprises a roadway bottom plate and a PVC sleeve. The downward large-diameter deep hole is formed in the top of the roadway bottom plate, and the PVC sleeve is arranged in the downward large-diameter deep hole. According to the downward vertical large-diameter deep hole opening protection device, the PVC sleeve is installed at the downward large-diameter deep hole opening for protection, the downward vertical large-diameter deep hole after construction is protected, slag and broken stone at the hole opening are prevented from falling into the hole opening, the large hole is prevented from being blocked, and the service life of the large hole is prolonged. The utilization rate of the downward vertical large-diameter deep hole is increased, the PVC sleeve is economical and practical, the PVC sleeve is very convenient to install after the downward large-diameter deep hole is constructed, and the construction cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mining using a downward vertical large-diameter deep hole process in underground mines, and particularly to a protective device for the orifice of a downward vertical large-diameter deep hole. Background Technology

[0002] In the subgrade stope backfilling mining method, some stopes require blasting using the downward vertical large-diameter deep hole process. After constructing the large-diameter deep hole, explosives are charged into the large-diameter deep hole and blasted. This is the traditional downward large-diameter deep hole lateral caving subgrade stope backfilling method in the field of mining engineering. The ore is then shoveled and extracted after being blasted by explosives.

[0003] The drawback of traditional downward large-diameter deep hole construction is that the hole opening is not protected after construction, and slag and waste rock from the top-level tunnel can easily fall into the hole, causing blockage. The vertical large-diameter deep hole needs to be cleaned again before charging explosives, otherwise charging and blasting cannot be carried out. Some vertical large-diameter deep holes are so severely blocked that they cannot be cleaned, resulting in the inability to charge and blast explosives in those holes.

[0004] Therefore, it is necessary to provide a downward vertical large-diameter deep hole orifice protection device to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides a downward vertical large-diameter deep hole orifice protection device, which solves the problem that after the construction of downward large-diameter deep holes, the orifice position is not protected, and the slag and waste rock in the top-layer roadway can easily fall into the hole, causing blockage. The vertical large-diameter deep hole needs to be cleaned again before charging explosives, otherwise charging and blasting cannot be carried out. Some vertical large-diameter deep holes are so severely blocked that they cannot be cleaned, making it impossible to charge and blast explosives in the hole.

[0006] To solve the above-mentioned technical problems, this utility model provides a downward vertical large-diameter deep hole opening protection device, comprising: a tunnel floor plate and a PVC sleeve;

[0007] A large-diameter deep hole is formed at the top of the tunnel floor, and a PVC sleeve is disposed inside the large-diameter deep hole.

[0008] Preferably, the PVC sleeve has connecting holes on both sides of its surface, and limiting cavities are formed on both sides of its interior. Friction devices are slidably installed on both sides of the PVC sleeve surface, and the friction devices include a friction plate, a fixing rod, a limiting block, and a spring.

[0009] Preferably, a stop is fixedly installed on the top of the PVC sleeve.

[0010] Preferably, the friction plate is disposed on the outer surface of the PVC sleeve, the two fixing rods are respectively fixedly installed on both sides of the surface of the friction plate, the limiting block is fixedly installed on one end of the fixing rod, and the spring is sleeved on one side of the outer surface of the fixing rod.

[0011] Preferably, the diameter of the fixing rod is adapted to the diameter of the connecting hole, and the diameter of the limiting block is adapted to the diameter of the limiting cavity.

[0012] Preferably, one end of the spring is fixedly connected to the surface of the limiting block, and the other end of the spring is fixedly connected to one side of the inner wall of the limiting cavity.

[0013] Preferably, a pressing plate is fixedly installed in the middle of the bottom of the friction plate.

[0014] Compared with related technologies, the downward vertical large-diameter deep hole orifice protection device provided by this utility model has the following beneficial effects:

[0015] This utility model provides a protective device for the orifice of a large-diameter deep hole in a downward vertical direction. By installing a PVC sleeve at the orifice of the large-diameter deep hole in a downward vertical direction, the device protects the hole after construction, preventing debris and gravel from falling into the orifice and causing blockage. This increases the utilization rate of the large-diameter deep hole in a downward vertical direction. Moreover, the PVC sleeve is economical and easy to install after the large-diameter deep hole in a downward vertical direction is constructed, thus reducing construction costs. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of the first embodiment of the downward vertical large-diameter deep hole opening protection device provided by this utility model;

[0017] Figure 2 A schematic diagram of the structure of a second embodiment of a downward vertical large-diameter deep hole opening protection device provided by this utility model;

[0018] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the PVC sleeve.

[0019] Figure 4 for Figure 2 The diagram shows the structure of the friction device.

[0020] Figure 5 A schematic diagram of the third embodiment of a downward vertical large-diameter deep hole opening protection device provided by this utility model;

[0021] Figure 6 for Figure 5 The diagram shows the structure of the friction device.

[0022] The following are labeled in the diagram: 1. Tunnel floor, 2. Downward large-diameter deep hole, 3. PVC sleeve, 4. Stop block, 5. Friction device, 51. Friction plate, 52. Fixing rod, 53. Limiting block, 54. Spring, 6. Limiting cavity, 7. Connecting hole, 8. Extrusion plate. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figure 1 The diagram shows a structural schematic of the first embodiment of a downward vertical large-diameter deep hole opening protection device provided by this utility model. The downward vertical large-diameter deep hole opening protection device includes: a roadway floor plate 1 and a PVC sleeve 3;

[0025] A large-diameter deep hole 2 is formed at the top of the tunnel floor 1, and a PVC sleeve 3 is disposed inside the large-diameter deep hole 2.

[0026] During construction, a complete set of PVC sleeves 3 can be purchased. After the construction of the large-diameter deep hole 2 is completed, the PVC sleeves 3 are cut into lengths of 50-70cm. Then, the PVC sleeves 3 can be directly installed at the hole opening, with the surface of the PVC sleeves 3 and the inner wall surface of the hole adhering to each other through friction. The construction process is simple, convenient, and very easy.

[0027] The working principle of the downward vertical large-diameter deep hole orifice protection device provided by this utility model is as follows:

[0028] During operation, a PVC sleeve 3 is first installed at the opening of the large-diameter deep hole 2 for protection. The PVC sleeve 3 extends about 30-40cm below the opening to ensure its stability. The PVC sleeve 3 is positioned 20-30cm above the opening to prevent debris from falling into the hole, thus achieving the purpose of creating a large-diameter deep hole.

[0029] Compared with related technologies, the downward vertical large-diameter deep hole orifice protection device provided by this utility model has the following beneficial effects:

[0030] This utility model provides a protective device for the opening of a large-diameter deep hole in a downward vertical direction. By installing a PVC sleeve 3 at the opening of the large-diameter deep hole 2 in a downward vertical direction, the device protects the large-diameter deep hole after construction, preventing debris and gravel from falling into the opening and causing blockage. This increases the utilization rate of the large-diameter deep hole in a downward vertical direction. Moreover, the PVC sleeve 3 is economical and easy to install after the large-diameter deep hole 2 is constructed, thus reducing construction costs.

[0031] Second Embodiment

[0032] Please refer to the following: Figure 2 , Figure 3 and Figure 4 Based on the first embodiment of this application which provides a downward vertical large-diameter deep hole opening protection device, the second embodiment of this application proposes another downward vertical large-diameter deep hole opening protection device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0033] Specifically, the second embodiment of this application provides a different type of downward vertical large-diameter deep hole opening protection device, wherein the PVC sleeve 3 has connecting holes 7 on both sides of its surface, and limiting cavities 6 are provided on both sides of the interior of the PVC sleeve 3. Friction devices 5 are slidably installed on both sides of the surface of the PVC sleeve 3, and the friction devices 5 include a friction plate 51, a fixing rod 52, a limiting block 53, and a spring 54.

[0034] A stop 4 is fixedly installed on the top of the PVC sleeve 3.

[0035] The friction plate 51 is disposed on the outer surface of the PVC sleeve 3, the two fixing rods 52 are respectively fixedly installed on both sides of the surface of the friction plate 51, the limiting block 53 is fixedly installed on one end of the fixing rod 52, and the spring 54 is sleeved on one side of the outer surface of the fixing rod 52.

[0036] The diameter of the fixing rod 52 is adapted to the diameter of the connecting hole 7, and the diameter of the limiting block 53 is adapted to the diameter of the limiting cavity 6.

[0037] One end of the spring 54 is fixedly connected to the surface of the limiting block 53, and the other end of the spring 54 is fixedly connected to one side of the inner wall of the limiting cavity 6.

[0038] In this embodiment, the PVC sleeve 3 is solid, and the restoring force of the spring 54 pushes the friction plate 51 away from the side of the PVC sleeve 3.

[0039] The working principle of the downward vertical large-diameter deep hole orifice protection device provided by this utility model is as follows:

[0040] During operation, the operator first holds the two friction plates 51 and moves them towards the PVC sleeve 3. The friction plates 51 drive the fixed rod 52 and the limiting block 53 to move towards the middle of the limiting cavity 6. The movement of the limiting block 53 pulls the spring 54.

[0041] Insert the two friction plates 51 and the PVC sleeve 3 into the interior of the large-diameter deep hole 2. The restoring force of the spring 54 pulls the limiting block 53 to move away from the PVC sleeve 3. The limiting block 53 drives the fixing rod 52 and the friction plate 51 to move away from the PVC sleeve 3, so that the friction plate 51 is in contact with the surface of the large-diameter deep hole 2.

[0042] The stop block 4 blocks the top of the downward large-diameter deep hole 2, which serves as a dustproof function and keeps the PVC sleeve 3 resting on the top surface of the tunnel floor 1.

[0043] Compared with related technologies, the downward vertical large-diameter deep hole orifice protection device provided by this utility model has the following beneficial effects:

[0044] This utility model provides a downward vertical large-diameter deep hole opening protection device. The friction plate 51 is moved by the restoring force of the spring 54, so that the friction plate 51 is in contact with the surface of the downward large-diameter deep hole 2. This device has a simple structure and strong practicality. The improved PVC sleeve 3 can be adapted to downward large-diameter deep holes 2 of different diameters. There is no need to select the PVC sleeve 3 with the diameter of the downward large-diameter deep hole 2, which reduces the preparation work of operators in selecting PVC sleeve 3 and improves the practicality and flexibility of PVC sleeve 3.

[0045] Third Embodiment

[0046] Please refer to the following: Figure 5 and Figure 6 Based on the first embodiment of this application, which provides a downward vertical large-diameter deep hole opening protection device, the third embodiment of this application proposes another downward vertical large-diameter deep hole opening protection device. The third embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the third embodiment will not affect the separate implementation of the first embodiment.

[0047] Specifically, the difference in the third embodiment of this application regarding the protection device for a large-diameter deep hole in a downward vertical direction is that a pressing plate 8 is fixedly installed in the middle of the bottom of the friction plate 51 in the protection device for a large-diameter deep hole in a downward vertical direction.

[0048] The working principle of the downward vertical large-diameter deep hole orifice protection device provided by this utility model is as follows:

[0049] During operation, the two bottom extrusion plates 8 are first aligned with the interior of the large-diameter deep hole 2. As the PVC sleeve 3 moves downward, the two extrusion plates 8 move downward against the inner wall surface of the large-diameter deep hole 2. The extrusion plates 8 pull the friction plate 51 closer to the PVC sleeve 3, so that the PVC sleeve 3 and the friction device 5 are directly embedded into the interior of the large-diameter deep hole 2.

[0050] Compared with related technologies, the downward vertical large-diameter deep hole orifice protection device provided by this utility model has the following beneficial effects:

[0051] This utility model provides a downward vertical large-diameter deep hole opening protection device. By installing inclined extrusion plates 8 at the bottom of friction plates 51, the bottom ends of the two extrusion plates 8 can be directly inserted into the interior of the downward large-diameter deep hole 2, eliminating the need for operators to extrude friction plates 51 and improving the installation efficiency of this device.

[0052] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A downward vertical large-diameter deep-hole portal protection device, characterized in that, The utility model relates to a roadway floor and PVC sleeve, downward large-diameter deep hole, the PVC sleeve is arranged inside downward large-diameter deep hole. The both sides of the surface of the PVC sleeve are provided with communication holes, the both sides of the inside of the PVC sleeve are provided with limiting cavities, the both sides of the surface of the PVC sleeve are slidably provided with friction devices, the friction device comprises a friction plate, a fixed rod, a limiting block and a spring. The top of the PVC sleeve is fixedly installed with a stop block.

2. A downward vertical large-diameter deep-hole portal protection device according to claim 1, characterized in that, The friction plate is arranged on the outer surface of the PVC sleeve, the two fixed rods are fixedly installed on the both sides of the surface of the friction plate, the limiting block is fixedly installed on one end of the fixed rod, and the spring is sleeved on one side of the outer surface of the fixed rod.

3. A downward vertical large-diameter deep-hole portal protection device according to claim 1, characterized in that, The diameter of the fixed rod is matched with the diameter of the communication hole, and the diameter of the limiting block is matched with the diameter of the limiting cavity.

4. A downward vertical large-diameter deep-hole portal protection device according to claim 2, characterized in that, One end of the spring is fixedly connected to the surface of the limiting block, and the other end of the spring is fixedly connected to one side of the inner wall of the limiting cavity.

5. A downward vertical large-diameter deep-hole orifice protection device according to claim 2, characterized in that, The middle of the bottom of the friction plate is fixedly installed with an extrusion plate.

6. A downward vertical large-diameter deep-hole portal protection device according to claim 2, characterized in that, ​ 7. A downward vertical large-diameter deep-hole portal protection device according to claim 2, characterized in that, ​

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