A borehole protector

Abstract

The utility model discloses a blasthole hole protector, including the protection pipe and the cornice, the protection pipe is the cylindrical shape of inside hollow, and the protection pipe includes the first sheath and the second sheath, the connecting edge of first sheath and second sheath realizes detachable connection through the connecting component, the top outside welding of first sheath has the cornice A, the right side welding of second sheath top has the cornice B. The utility model passes through the protection cylinder of steel material and makes, can effectively block the collapse of the rock and soil around the hole mouth, avoids the problem of insufficient hole depth, does not need secondary perforation or secondary crushing, significantly reduces manpower, consumable and time, and first sheath and second sheath are detachably installed through the connecting component, solve the condition of taking out the protection cylinder and taking out the explosive, through being equipped with the fixed component between two cornices, not only through the connecting component between two sheaths, but also through the connection of fixed component, realize the installation firm and the dismounting function of protection cylinder, improve the overall stability of protection cylinder further.

Description

Technical Field

[0001] This utility model relates to the field of open-pit mining technology, specifically a borehole protector. Background Technology

[0002] Drilling is the first production process in open-pit mining. Its work involves using a drilling rig to drill holes in the ore body to provide space for subsequent blasting operations. During drilling, factors such as slag removal air pressure and groundwater levels frequently cause hole collapses, resulting in insufficient hole depth and significantly impacting subsequent blasting operations.

[0003] The usual solution is to backfill the original blast hole and drill a second hole nearby, which would drastically increase costs. If the hole depth is insufficient and blasting continues, it will affect the blasting quality, causing problems such as the base and large pieces, requiring secondary crushing and increasing blasting costs. Moreover, ordinary hole protectors are cylindrical, which are not easy to remove when placing explosives. It is easy for the explosives to be pulled out when the hole protector is removed, making the operation inconvenient. Utility Model Content

[0004] The purpose of this utility model is to provide a borehole protector to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a borehole protector, comprising a protective tube and a top edge, wherein the protective tube is a hollow cylindrical shape, and the protective tube includes a first sheath and a second sheath, wherein the connecting edge of the first sheath and the second sheath is detachably connected by a connecting component, a top edge A is welded to the outer side of the top of the first sheath, and a top edge B is welded to the right side of the top of the second sheath;

[0006] Both ends of the top eaves A and B are fixedly connected by fixing components. Both the outer sides of the top eaves A and B are welded with connecting ears, and fixing bolts with threaded structures pass through the connecting ears.

[0007] As a preferred embodiment of the present invention, the connecting assembly is provided with two sets of front and rear symmetrical structures. Each set of the connecting assembly includes a connecting frame welded to the left end face of the first sheath, and the connecting frame is slidably installed in the mounting groove opened on the right end face of the second sheath.

[0008] In a preferred embodiment of this utility model, both the connecting frame and the mounting groove are T-shaped and connected in a fitting manner, and both the upper and lower ends of the mounting groove are open structures.

[0009] As a preferred embodiment of this utility model, both the first sheath and the second sheath are semi-circular and made of steel, and the first sheath and the second sheath have the same structure and are symmetrically arranged.

[0010] As a preferred embodiment of the present invention, the two fixing components include a first connecting block welded to the front and rear sides of the left end face of the top eaves A, and a second connecting block welded to the front and rear sides of the right end face of the second connecting block, wherein the first connecting block and the second connecting block are symmetrically arranged.

[0011] In a preferred embodiment of this utility model, the positioning block welded to the upper side of the left end face of the first connecting block is embedded in the positioning groove opened at the upper end of the second connecting block and is connected in cooperation. A locking bolt is installed through the first connecting block, and the locking bolt is embedded in the second connecting block and threadedly connected.

[0012] As a preferred embodiment of this utility model, each of the two connecting ears is welded with a handle shell, and the handle shell is fan-shaped with an internal hollow structure.

[0013] In a preferred embodiment of this invention, the inner diameter of the sheath is larger than the diameter of the drill bit, and the outer diameter of the sheath is smaller than the diameter of the borehole.

[0014] In a preferred embodiment of this utility model, the sheath, top eaves A, top eaves B, and the upper surface of the connecting ear are all on the same plane.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The steel casing in this utility model can effectively prevent the collapse of the surrounding rock and soil, avoid the problem of insufficient hole depth, eliminate the need for secondary drilling or secondary crushing, significantly reduce manpower, material consumption and time costs, and the first casing and the second casing can be disassembled and installed by connecting components, which solves the problem of taking out explosives when removing the casing.

[0017] 2. In this utility model, by providing a fixing component between the two top eaves, the two sheaths are not only assembled by connecting components, but also connected by fixing components, which realizes the functions of secure installation and disassembly of the protective sleeve, and further improves the overall stability of the protective sleeve. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram showing the exploded structure of the protective tube and the top eaves of this utility model;

[0020] Figure 3 This is a top view of the connection structure between the protective tube and the connecting component of this utility model;

[0021] Figure 4 This is an exploded structural diagram of the connecting component of this utility model;

[0022] Figure 5 This is a schematic diagram of the fixing component structure of this utility model;

[0023] Figure 6 This is an exploded view of the fixing component of this utility model;

[0024] Figure 7 This is a schematic diagram of the handle shell structure of this utility model.

[0025] In the diagram: 1. Protective tube; 101. First protective sleeve; 102. Second protective sleeve; 2. Top eaves A; 3. Top eaves B; 4. Connecting assembly; 401. Connecting bracket; 402. Mounting groove; 5. Fixing assembly; 501. First connecting block; 502. Positioning block; 503. Positioning groove; 504. Second connecting block; 505. Locking bolt; 6. Connecting ear; 7. Fixing bolt; 8. Handle housing. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. "Multiple" means two or more, and unless otherwise explicitly limited, all of them fall within the scope of protection of this utility model.

[0029] Example 1

[0030] like Figure 1-6 As shown, this utility model provides a technical solution: including a protective tube 1 and a top edge 2. The protective tube 1 is a hollow cylinder, and the protective tube 1 includes a first protective sleeve 101 and a second protective sleeve 102. The connecting edge of the first protective sleeve 101 and the second protective sleeve 102 is detachably connected through a connecting component 4.

[0031] The connecting component 4 has two sets with a front-to-back symmetrical structure. Each set of connecting components 4 includes a connecting frame 401 welded to the left end face of the first sheath 101. The connecting frame 401 is slidably installed in the mounting groove 402 opened on the right end face of the second sheath 102.

[0032] Both the connecting bracket 401 and the mounting groove 402 are T-shaped and are connected together. Both the upper and lower ends of the mounting groove 402 are open, which facilitates the splicing installation of the protective sleeve.

[0033] Both the first sheath 101 and the second sheath 102 are semi-circular steel materials, and the first sheath 101 and the second sheath 102 have the same structure and are symmetrically arranged. The two sheaths form a cylinder, which facilitates the operation of the drill bit and the way explosives are used.

[0034] Both connecting lugs 6 are welded with handle shells 8, and the handle shells 8 are fan-shaped with an internal hollow structure, which facilitates the installation and removal of the protective sleeve.

[0035] The inner diameter of the casing 1 is larger than the diameter of the drill bit, and the outer diameter of the casing 1 is smaller than the diameter of the borehole, so as to avoid the drill bit colliding with the casing when it is working.

[0036] The upper surfaces of the protective tube 1, top eaves A2, top eaves B3 and connecting lug 6 are all on the same plane, which makes it easy to fix the whole device on the ore.

[0037] In this embodiment, the steel casing can effectively prevent the collapse of the surrounding soil and rock, avoid the problem of insufficient hole depth, eliminate the need for secondary drilling or secondary crushing, significantly reduce manpower, material consumption and time costs, and the first and second casings can be detached and installed through the connecting components, which solves the problem of taking out explosives when removing the casing.

[0038] Example 2

[0039] like Figure 1 , 2 As shown in Figure 7, this utility model provides a technical solution: including a protective tube 1 and a top eave 2. The protective tube 1 is a hollow cylinder, and the protective tube 1 includes a first sheath 101 and a second sheath 102. The connecting edge of the first sheath 101 and the second sheath 102 is detachably connected by a connecting component 4. A top eave A2 is welded to the outer side of the top of the first sheath 101, and a top eave B3 is welded to the right side of the top of the second sheath 102.

[0040] Both ends of the top eaves A2 and B3 are fixedly connected by fixing components 5. Both the outer sides of the top eaves A2 and B3 are welded with connecting ears 6, and fixing bolts 7 with threaded structures are passed through the connecting ears 6.

[0041] The two fixing components 5 include a first connecting block 501 welded to the front and rear sides of the left end of the top eaves A2, and a second connecting block 504 welded to the front and rear sides of the right end of the second connecting block 504. The first connecting block 501 and the second connecting block 504 are symmetrically arranged to fix the two sheaths and increase the firmness.

[0042] The positioning block 502 welded to the upper side of the left end face of the first connecting block 501 is embedded in the positioning groove 503 opened at the upper end of the second connecting block 504 and is connected in a cooperative manner. A locking bolt 505 is installed through the first connecting block 501, and the locking bolt 505 is embedded in the second connecting block 504 and is threaded. The cooperation between the positioning block on the first connecting block and the mounting groove realizes the precise positioning of the two sheaths.

[0043] In this embodiment, by providing a fixing component between the two top eaves, the two sheaths are not only assembled by connecting components, but also connected by fixing components, which realizes the functions of secure installation and disassembly of the sheath, and further improves the overall stability of the sheath.

[0044] Working principle:

[0045] When using,

[0046] 1. Preliminary preparation and component inspection

[0047] Before operation, check the integrity of each component of the hole protector: confirm that the first protective sleeve 101 and the second protective sleeve 102 are not deformed, the connecting bracket 401 and the mounting groove 402 of the connecting component 4 are not stuck, the first connecting block 501, the positioning block 502, the second connecting block 504 and the locking bolt 505 of the fixing component 5 are intact, the fixing bolt 7 on the connecting ear 6 is not stripped, and the handle shell 8 is not damaged.

[0048] 2. The hole protector is assembled to form a complete protective tube.

[0049] Take the first sheath 101 and the second sheath 102, align the connecting bracket 401 on the left end face of the first sheath 101 with the mounting groove 402 on the right end face of the second sheath 102, and slide it in along the upper and lower opening direction of the mounting groove 402 until the two sheaths fit together to form a complete cylindrical tube 1.

[0050] At this time, the top edge A2 is welded to the outer side of the top of the first sheath 101 and the top edge B3 is welded to the right side of the top of the second sheath 102, forming a natural connection. At this time, the positioning block 502 on the first connecting block 501 is embedded in the positioning groove 503 of the second connecting block 504, completing the precise positioning.

[0051] The locking bolt 505 is passed through the first connecting block 501 and screwed into the threaded hole of the second connecting block 504 until it is tightened, thereby fixing the top eaves A2 and the top eaves B3. At this time, the hole protector is assembled.

[0052] 3. Install the borehole protector at the borehole opening.

[0053] Align the assembled protective tube 1 with the position of the blast hole to be pierced, and slowly insert it into the blast hole. Because the outer diameter of the protective tube 1 is smaller than the diameter of the blast hole, it can be easily inserted. Ensure that the lower end faces of the top edge A2 and the top edge B3 are in contact with the ground around the hole.

[0054] Take the fixing bolt 7 and pass it through the connecting lug 6 on the outside of the top eaves A2 and B3 respectively. Then screw the fixing bolt 7 into the foundation pre-drilled around the hole until it is tightened, so that the hole protector is fixed to the hole opening and avoids displacement during operation.

[0055] 4. The hole protector plays a protective role during drilling operations.

[0056] Start the drilling rig and align the drill bit with the hollow channel of the casing 1. Since the inner diameter of the casing 1 is larger than the diameter of the drill bit, the drill bit can enter smoothly to carry out the drilling operation. During the process, the first sleeve 101 and the second sleeve 102 of the casing 1 prevent the collapse of the rock and soil at the borehole opening. The slag discharge air pressure and groundwater will not cause the borehole opening to deform, ensuring that the drilling depth meets the design requirements.

[0057] 5. Removal of the hole protector before placing the explosives

[0058] After the drilling operation is completed, first unscrew the fixing bolt 7 on the connecting lug 6 to release the hole protector from the foundation, and then place the explosive inside the protective tube 1;

[0059] Loosen the locking bolt 505 of the fixing component 5 with a tool and remove it from the first connecting block 501 and the second connecting block 504. Then separate the positioning block 502 and the positioning groove 503. If the length of the explosive hole is equal to the length of the protective tube 1, when disassembling the first protective sleeve 101 and the second protective sleeve 102, you only need to use your fingers to block the explosive to disassemble the two protective sleeves without taking out the explosive. If the length of the explosive hole is greater than the length of the explosive but less than the length of the protective tube 1, you can slowly push the explosive into the interior by controlling the support rod.

[0060] Preparations were made for subsequent blasting.

[0061] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A borehole protector, comprising a protective tube (1) and a top rim, characterized in that: The protective tube (1) is a hollow cylinder, and the protective tube (1) includes a first sheath (101) and a second sheath (102). The connecting edge of the first sheath (101) and the second sheath (102) is detachably connected by a connecting component (4). A top edge A (2) is welded to the outer side of the top of the first sheath (101), and a top edge B (3) is welded to the right side of the top of the second sheath (102). The top eaves A (2) and B (3) are fixedly connected at both ends by fixing components (5). Connecting ears (6) are welded to the outer sides of the top eaves A (2) and B (3), and fixing bolts (7) with threaded structures are provided through the connecting ears (6).

2. The borehole protector according to claim 1, characterized in that: The connecting component (4) has two sets of front and rear symmetrical structures. Each set of the connecting component (4) includes a connecting frame (401) welded to the left end face of the first sheath (101). The connecting frame (401) is slidably installed in the mounting groove (402) opened on the right end face of the second sheath (102).

3. A borehole protector according to claim 2, characterized in that: The connecting frame (401) and the mounting groove (402) are both T-shaped and connected together. Both the upper and lower ends of the mounting groove (402) are open.

4. A borehole protector according to claim 2, characterized in that: The first sheath (101) and the second sheath (102) are both semi-circular steel materials, and the first sheath (101) and the second sheath (102) have the same structure and are symmetrically arranged.

5. A borehole protector according to claim 1, characterized in that: The two fixing components (5) include a first connecting block (501) welded to the front and rear sides of the left end of the top eaves A (2), and a second connecting block (504) welded to the front and rear sides of the right end of the second connecting block (504). The first connecting block (501) and the second connecting block (504) are symmetrically arranged.

6. A borehole protector according to claim 5, characterized in that: The positioning block (502) welded to the upper side of the left end face of the first connecting block (501) is embedded in the positioning groove (503) opened at the upper end of the second connecting block (504) and is connected in cooperation. A locking bolt (505) is installed through the first connecting block (501), and the locking bolt (505) is embedded in the second connecting block (504) and threaded.

7. A borehole protector according to claim 1, characterized in that: Both connecting ears (6) are welded with handle shells (8), and the handle shells (8) are fan-shaped with an internal hollow structure.

8. A borehole protector according to claim 1, characterized in that: The inner diameter of the protective tube (1) is larger than the diameter of the drill bit, and the outer diameter of the protective tube (1) is smaller than the diameter of the blast hole.

9. A borehole protector according to claim 1, characterized in that: The upper surfaces of the protective tube (1), top eaves A (2), top eaves B (3) and connecting ear (6) are all on the same plane.

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