Underground drill-through blast hole bottom reverse sealing device

Abstract

The utility model relates to the technical field of mining, in particular to an underground drill-through blast hole bottom reverse sealing device which is used for being installed in a blast hole and blocking the bottom of the blast hole and comprises a reverse sealing structure, the reverse sealing structure comprises an installation piece and at least two expansion assemblies, and the installation piece and the expansion assemblies are arranged on the reverse sealing structure. The expansion assemblies are distributed on the periphery of the installation part and are evenly arranged in the circumferential direction of the installation part. The pushing cylinder is arranged on the mounting part in a sleeving mode, and the pushing cylinder can slide in the axial direction of the mounting part and is used for driving the expansion assembly to be unfolded; the expansion assembly comprises an expansion unit and an expansion fan blade connected with the expansion unit, the expansion unit can drive the expansion fan blade to expand outwards in the radial direction of the mounting part, and a plurality of spike teeth are arranged on the expansion fan blade; the problem that in the forming process of the branch draw shaft, explosives easily fall into a main draw shaft, and the forming effect of the branch draw shaft is affected is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mining, in particular to a bottom anti-sealing device for an underground drilled blasthole. Background Art

[0002] In mining operations, the efficient transportation and lifting of ore constitute the core link of the entire production process, which is directly related to the output efficiency and economic benefits of the mine. Among them, the main chute of the mine plays a central role in the ore transportation system. Its stability and durability are of decisive significance for ensuring the continuous operation and safe operation of the mine. However, the main chute will encounter multiple challenges in actual operation. In particular, when ore falls from a height, it frequently hits the shaft wall at high speed. This high-intensity physical impact can easily damage the shaft wall structure, thereby hindering the smooth flow of ore. In order to reduce the mechanical pressure on the main chute and reduce the risk of direct damage, mine designers generally tend to add multiple branch chutes on the side of the main chute. The advantage of this layout is that it allows ore to gradually flow into the main chute from the middle section through the branch chutes, effectively dispersing the direct impact of the ore on the main chute, thereby improving the stability and safety of the entire ore transportation system.

[0003] However, in the process of forming the branch chute, it is first necessary to use a drilling rig to drill several blast holes, then put explosives into the blast holes and detonate the explosives to finally form the branch chute; however, in the process of drilling the blast holes, the blast holes are often connected to the main chute. When the explosives are placed, due to the potential connectivity between the blast holes and the main chute, once the explosives get out of control and fall into the main chute, it may not only cause a safety accident, but also seriously affect the formation effect of the branch chute.

[0004] Therefore, in view of this, the inventors proposed an underground drilled blasthole bottom anti-sealing device to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide an underground drilled blasthole bottom anti-sealing device to solve the problem that during the formation of branch chutes, explosives easily fall into the main chutes, thereby affecting the formation effect of the branch chutes.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A bottom reverse sealing device for an underground blast hole drilled through is used for being installed in the blast hole to seal the blast hole, comprising a reverse sealing structure, wherein the reverse sealing structure comprises:

[0008] A mounting member and an expansion component, wherein the number of the expansion components is at least two, and each of the expansion components is distributed around the periphery of the mounting member, and each of the expansion components is evenly arranged along the circumference of the mounting member;

[0009] a pushing cylinder, the pushing cylinder being sleeved on the mounting member and being slidable along the axial direction of the mounting member to drive the expansion assembly to expand;

[0010] The expansion component includes an expansion unit and an expansion sector connected to the expansion unit. The expansion unit can drive the expansion sector to expand outward along the radial direction of the mounting member. The expansion sector is provided with a plurality of spikes.

[0011] According to the above technical solution, the device is precisely installed in the blast hole that needs to be sealed. When the blast hole needs to be sealed, the push tube is pushed by external force and transmitted to the expansion component along the axial sliding of the mounting part. The expansion unit inside it starts to work, driving the expansion fan piece connected to it to expand outward along the radial direction of the mounting part, so that the expansion fan piece is fully unfolded and fits tightly to the inner wall of the blast hole, and the nail teeth are deeply embedded in the wall of the blast hole, thereby achieving effective sealing of the blast hole.

[0012] Furthermore, the mounting member includes a mounting head and a connecting rod, the mounting head is provided with an internal threaded hole, and an end of the connecting rod close to the mounting head is formed with an external thread, and the internal thread is adapted to the external thread.

[0013] Furthermore, a sliding sleeve is sleeved on the connecting rod, and the sliding sleeve can move along the axial direction of the connecting rod.

[0014] Furthermore, the expansion unit includes a support plate, a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod are arranged to cross each other.

[0015] Furthermore, one end of the first connecting rod is hinged to a first mounting block, and the other end of the first connecting rod is connected to a second mounting block; the first mounting block is fixed to the mounting head, and the second mounting block is fixed to the support plate;

[0016] One end of the second connecting rod is connected to a third mounting block, and the other end of the second connecting rod is connected to a fourth mounting block. The third mounting block is fixed on the sliding sleeve, and the fourth mounting block is fixed on the support plate.

[0017] Furthermore, a first sliding groove is provided on the second mounting block, a first sliding column is slidably arranged in the first sliding groove, and the first sliding column is hinged to the first connecting rod; a second sliding groove is provided on the third mounting block, a second sliding column is slidably arranged in the second sliding groove, and the second sliding column is hinged to the second connecting rod.

[0018] According to the above technical solution, when it is necessary to seal the blast hole, an external force pushes the push tube to slide axially along the mounting member. The movement of the push tube drives the movement of the sleeve, thereby changing the intersection angle of the first connecting rod and the second connecting rod. The support plate, the first connecting rod and the second connecting rod in the expansion unit together form a retractable frame. The first connecting rod and the second connecting rod are arranged crosswise with each other and are connected to the support plate and the sleeve by being hinged on the mounting block. As the sleeve moves, the first connecting rod begins to change under the guidance of the first sliding post in the first chute and the second connecting rod begins to change under the guidance of the second sliding post in the second chute. This change drives the support plate and the expansion fan blades thereon to expand radially outward along the mounting member. The expansion fan blades have an arc-shaped structure that fits tightly against the inner wall of the blast hole, forming an effective seal.

[0019] Furthermore, the cross section of the support plate is an arc-shaped structure.

[0020] Furthermore, the extended fan blades are in an arc-shaped structure, and the extended fan blades are fixed on the support plate.

[0021] Furthermore, the spike teeth are evenly distributed along the length direction of the extended sector.

[0022] Furthermore, the top end of the spike teeth is a conical structure.

[0023] Beneficial effects of the utility model:

[0024] This innovative underground drilled blasthole bottom sealing device cleverly deploys an expansion assembly by sliding a pusher tube. Driven by a support plate, the expansion blades expand radially outward along the blasthole, driving the tapered spikes deeply into the blasthole wall, effectively sealing the blasthole. This design not only eliminates the safety hazard of explosives easily falling into the main chute, but also ensures the formation of branch chutes, improving the stability and safety of the ore transportation system.

[0025] Other advantages, objectives and features of the present application will be described to some extent in the subsequent description, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present application. The objectives and other advantages of the present application can be achieved and obtained through the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the distribution structure of the main chute and branch chute;

[0027] Figure 2 A schematic diagram of the structure of the main chute and the branch chute during the formation process;

[0028] Figure 3This is a schematic diagram of the overall structure of the bottom anti-sealing device for underground blastholes according to the present invention in one direction;

[0029] Figure 4 This is a schematic diagram of the overall structure of the bottom anti-sealing device for underground blastholes in another direction of the present invention;

[0030] Figure 5 It is a cross-sectional schematic diagram of one direction of the bottom anti-sealing device of an underground drilled blasthole according to the utility model;

[0031] Figure 6 This is a cross-sectional view of the bottom anti-sealing device of an underground blasthole according to the present invention from another direction;

[0032] Figure 7 This is a schematic structural diagram of one direction of the expansion unit in the bottom anti-sealing device for underground blasthole drilling according to the present invention;

[0033] Figure 8 This is a structural schematic diagram of another direction of the expansion unit in the bottom anti-sealing device for underground drilled blastholes of the present invention.

[0034] Among them, the anti-sealing structure 1, the mounting part 2, the mounting head 21, the connecting rod 22, the extension component 3, the extension unit 31, the support plate 311, the first connecting rod 312, the second connecting rod 313, the first mounting block 314, the second mounting block 315, the first slide groove 3151, the first slide column 3152, the third mounting block 316, the second slide groove 3161, the second slide column 3162, the fourth mounting block 317, the extension fan 32, the push tube 4, the sliding sleeve 5, the nail teeth 6, and the gun hole 7. DETAILED DESCRIPTION

[0035] The following describes the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended solely to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0036] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. Therefore, the drawings only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0037] like Figure 1As shown, in order to reduce the mechanical pressure on the main chute and reduce the risk of direct damage, mine designers generally add multiple branch chutes on the side of the main chute. The advantage of this layout is that it allows the ore to gradually flow into the main chute through the branch chutes, effectively dispersing the direct impact of the ore on the main chute, thereby improving the stability and safety of the entire ore transportation system.

[0038] However, during the formation of branch wells, Figure 2 As shown, it is first necessary to use a drilling rig to drill a number of blastholes 7, then put explosives into the blastholes 7 and detonate the explosives, and finally form branch chutes; however, during the process of drilling the blastholes 7, the blastholes 7 are often connected to the main chute. When the explosives are placed, due to the potential connectivity between the blastholes 7 and the main chute, once the explosives lose control and fall into the main chute, it may not only cause a safety accident, but also seriously affect the formation effect of the branch chute.

[0039] Therefore, this embodiment proposes an underground drilled blasthole bottom anti-sealing device, including an anti-sealing structure 1, which is installed in the blasthole 7 to seal the bottom of the blasthole 7 to prevent explosives from falling into the main chute; Figures 3 to 8 As shown, the anti-sealing structure 1 includes a mounting part 2, an expansion component 3 and a pushing cylinder 4. The number of expansion components 3 is at least two, and each expansion component 3 is distributed on the periphery of the mounting part 2, and each expansion component 3 is evenly arranged along the circumference of the mounting part 2; in this embodiment, the number of expansion components 3 is preferably five; the pushing cylinder 4 is sleeved on the mounting part 2, and the pushing cylinder 4 can slide along the axial direction of the mounting part 2 to drive the expansion component 3 to unfold.

[0040] The expansion assembly 3 includes an expansion unit 31 and expansion blades 32 connected to the expansion unit 31. The expansion blades 32 are in an arc-shaped structure. The expansion unit 31 can drive the expansion blades 32 to expand radially outward along the mounting member 2. A plurality of spikes 6 are provided on the expansion blades 32. The top ends of the spikes 6 are in a conical structure, which is convenient for piercing the inner wall of the blast hole. The spikes 6 are evenly distributed along the length direction of the expansion blades 32. According to the above technical solution, the device is installed in the blast hole 7 that needs to be blocked. When the blast hole 7 needs to be blocked, the push tube 4 is pushed by an external force and slides along the axial direction of the mounting member 2 to transmit to the expansion assembly 3. The expansion unit 31 inside the expansion unit 31 starts to work, driving the expansion blades 32 connected thereto to expand radially outward along the mounting member 2, so that the expansion blades 32 are fully expanded and tightly fit the inner wall of the blast hole 7. The spikes 6 deeply penetrate into the wall of the blast hole 7, thereby achieving effective blocking of the blast hole 7.

[0041] As a preferred embodiment, Figure 5 As shown, the mounting member 2 includes a mounting head 21 and a connecting rod 22. The mounting head 21 is provided with an internal threaded hole. The connecting rod 22 is close to one end of the mounting head 21 (i.e. Figure 5In the embodiment, the left end of the connecting rod 22 is formed with an external thread, and the internal thread is adapted to the external thread.

[0042] The connecting rod 22 is sleeved with a sliding sleeve 5 , which can move along the axial direction of the connecting rod 22 .

[0043] As a preferred embodiment, Figure 7 and Figure 8 As shown, the expansion unit 31 includes a support plate 311, a first connecting rod 312 and a second connecting rod 313. The cross section of the support plate 311 is an arc-shaped structure. The expansion fan 32 is fixed on the support plate 311. The first connecting rod 312 and the second connecting rod 313 are arranged crosswise with each other; the left end of the first connecting rod 312 is hinged with a first mounting block 314, and the right end of the first connecting rod 312 is connected to the second mounting block 315; the first mounting block 314 is fixed on the mounting head 21, and the second mounting block 315 is fixed on the support plate 311; specifically, the second mounting block 315 is provided with a first sliding groove 3151, and a first sliding column 3152 is slidingly arranged in the first sliding groove 3151, and the first sliding column 3152 is hinged to the right end of the first connecting rod 312.

[0044] The right end of the second connecting rod 313 is connected to the third mounting block 316, and the third mounting block 316 is fixed on the sliding sleeve 5; the left end of the second connecting rod 313 is connected to the fourth mounting block 317, and the fourth mounting block 317 is fixed on the support plate 311; specifically, a second sliding groove 3161 is provided on the third mounting block 316, and a second sliding column 3162 is slidingly arranged in the second sliding groove 3161, and the second sliding column 3162 is hinged to the second connecting rod 313.

[0045] In a possible implementation, when the bottom of the blasthole 7 is made of hard rock and the spike teeth 6 cannot penetrate into it, a suction cup can be installed on the spike teeth 6 to absorb the inner wall of the blasthole.

[0046] In one possible embodiment, when the spikes 6 are deeply embedded in the wall of the blast hole 7, the anti-sealing structure 1 is fixed in the blast hole 7; the connecting rod 22 can also be twisted in the reverse direction so that the connecting rod 22 is disengaged from the mounting head 21, and the connecting rod 22 and the push cylinder 4 are removed to facilitate the subsequent placement of explosives into the blast hole 7.

[0047] During use of this embodiment, first, the anti-sealing device of the blast hole 7 is accurately installed in the blast hole 7 to be blocked; then, the pushing cylinder 4 is pushed by external force to slide along the axial direction of the mounting member 2, and the movement of the pushing cylinder 4 drives the sliding sleeve 5 to move to the left, and then drives the expansion unit 31 to start working through the cross-connection structure of the first connecting rod 312 and the second connecting rod 313; the support plate 311 gradually expands outward along the radial direction of the connecting rod 22 under the action of the change in the angle of the first connecting rod 312 and the second connecting rod 313, driving the fixed The expansion sector 32 on the support plate 311 is expanded together; at the same time, the conical nail teeth 6 provided on the expansion sector 32 are deeply penetrated into the inner wall of the blast hole 7, and then the connecting rod 22 and the push cylinder 4 are limited, thereby effectively realizing the blocking of the blast hole 7; after the explosives are put into the blast hole, the risk of the explosives falling into the main chute out of control can be avoided, thereby ensuring the safe progress of the mining operation. The structure is compact and practical, and the problem that the explosives are easy to fall into the main chute during the formation of the branch chute, thereby affecting the formation effect of the branch chute, is solved.

[0048] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or modification made by those skilled in the art based on the present invention shall fall within the protection scope of the present invention.

Claims

1. An underground drilled blast hole bottom anti-sealing device, used for being installed in a blast hole (7) to seal the bottom of the blast hole (7), characterized in that: The invention comprises an anti-sealing structure (1), wherein the anti-sealing structure (1) comprises: A mounting member (2) and an expansion component (3), wherein the number of the expansion components (3) is at least two, and each of the expansion components (3) is distributed on the periphery of the mounting member (2), and each of the expansion components (3) is evenly arranged along the circumference of the mounting member (2); A pushing cylinder (4), wherein the pushing cylinder (4) is sleeved on the mounting member (2), and the pushing cylinder (4) can slide along the axial direction of the mounting member (2) to drive the expansion component (3) to expand; The expansion assembly (3) comprises an expansion unit (31) and an expansion fan (32) connected to the expansion unit (31). The expansion unit (31) can drive the expansion fan (32) to expand radially outward along the mounting member (2). The expansion fan (32) is provided with a plurality of spike teeth (6).

2. The bottom sealing device for underground blastholes according to claim 1, characterized in that: The mounting member (2) comprises a mounting head (21) and a connecting rod (22); an internal threaded hole is formed on the mounting head (21); an external thread is formed on one end of the connecting rod (22) close to the mounting head (21); the internal thread is adapted to the external thread.

3. The bottom sealing device for underground blastholes according to claim 2, characterized in that: A sliding sleeve (5) is sleeved on the connecting rod (22), and the sliding sleeve (5) is movable along the axial direction of the connecting rod (22).

4. The bottom sealing device for underground blastholes according to claim 3, characterized in that: The expansion unit (31) comprises a support plate (311), a first connecting rod (312) and a second connecting rod (313), wherein the first connecting rod (312) and the second connecting rod (313) are arranged to cross each other.

5. The bottom sealing device for underground blastholes according to claim 4, characterized in that: One end of the first connecting rod (312) is hinged to a first mounting block (314), and the other end of the first connecting rod (312) is connected to a second mounting block (315); the first mounting block (314) is fixed to the mounting head (21), and the second mounting block (315) is fixed to the support plate (311); One end of the second connecting rod (313) is connected to a third mounting block (316), and the other end of the second connecting rod (313) is connected to a fourth mounting block (317). The third mounting block (316) is fixed on the sliding sleeve (5), and the fourth mounting block (317) is fixed on the support plate (311).

6. The bottom sealing device for underground blastholes according to claim 5, characterized in that: A first sliding groove (3151) is provided on the second mounting block (315), a first sliding column (3152) is slidably provided in the first sliding groove (3151), and the first sliding column (3152) is hinged to the first connecting rod (312); a second sliding groove (3161) is provided on the third mounting block (316), a second sliding column (3162) is slidably provided in the second sliding groove (3161), and the second sliding column (3162) is hinged to the second connecting rod (313).

7. The bottom sealing device for underground blastholes according to claim 4, characterized in that: The cross section of the support plate (311) is in an arc-shaped structure.

8. The bottom sealing device for underground blastholes according to claim 7, characterized in that: The extended fan blade (32) has an arc-shaped structure, and the extended fan blade (32) is fixed on the support plate (311).

9. The bottom sealing device for underground blastholes according to claim 8, characterized in that: The spike teeth (6) are evenly distributed along the length direction of the extended sector (32).

10. The bottom sealing device for underground blastholes according to claim 9, characterized in that: The top end of the spike (6) is in a conical structure.

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