A mine anchor rod anchor cable drilling anti-dripping sealing rod
Patent Information
- Application Number
- CN202410259416.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-07
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2044-03-07
AI Technical Summary
[0004]相关技术中,在安装密封垫时,安装不正确或者安装不到位会导致密封垫与钻孔壁之间的接触不紧密,从而发生漏水
[0005] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose a drip-proof sealing rod for drilling holes in mine anchor bolts and cables, which has the advantage of good sealing performance.
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Figure CN118008187B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of coal mining equipment technology, specifically to a drip-proof sealing rod for drilling holes in mine anchor bolts and cables. Background Technology
[0002] Rock bolts are a fundamental component of roadway support in coal mines. Their function is to reinforce the surrounding rock of the roadway, allowing the rock to support itself. Anchor cables, on the other hand, are used in suspension bridges to anchor the main cable in the side openings. The main cable is divided into many strands of steel and anchored separately into anchor bolts; these strands are called anchor cables.
[0003] The sealing sleeve of the anchor bolt and anchor cable borehole sealing rod is made of soft rubber and is cone-shaped. It wraps around the anchor bolt and anchor cable to seal the borehole. It is used to control water dripping from the anchor bolts and anchor cables on the roof of coal mine roadways, so that the equipment is not sprayed with water and rusts, the roadway surface is no longer muddy, and the working environment is kept clean and clear.
[0004] In related technologies, improper or incomplete installation of the gasket can lead to poor contact between the gasket and the borehole wall, resulting in water leakage. Summary of the Invention
[0005] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose a drip-proof sealing rod for drilling holes in mine anchor bolts and cables, which has the advantage of good sealing performance.
[0006] The anti-drip sealing rod for drilling holes of mine anchor bolts and cables according to embodiments of the present invention includes:
[0007] A retaining ring, which is fitted onto the anchor bolt or anchor cable and is arranged adjacent to the borehole;
[0008] A sealing sleeve is fitted onto the anchor bolt or anchor cable, and one end of the sealing sleeve adjacent to the borehole passes through the central hole of the fixing ring and is sealed to the fixing ring.
[0009] The reinforcement assembly includes a reinforcement ring and a locking member, the locking member being connected to the fixing ring, and the locking member having a first state and a second state.
[0010] In the first state, the locking member is in contact with the fixing ring and the locking member is movable relative to the anchor bolt or anchor cable.
[0011] In the second state, at least a portion of the locking member abuts against the retaining ring, and the reinforcing member abuts against the end of the sealing sleeve away from the drill hole, to restrict movement of the sealing sleeve in a direction away from the drill hole.
[0012] In this embodiment of the invention, after the sealing sleeve is installed on the fixing ring, the second state of the reinforcing component is used to abut the locking member against the fixing ring, so that the reinforcing component can limit the movement of the sealing sleeve in a direction away from the borehole, thereby ensuring the stability of the sealing sleeve installation and thus ensuring the sealing effect.
[0013] In some embodiments, the fixing ring has a fixing hole that extends through the fixing ring along its thickness direction. The fixing hole has a fixing groove in its wall. The locking member includes a protruding member. In the second state, the protruding member engages in the fixing groove, and at least a portion of the protruding member abuts against the groove wall of the fixing groove.
[0014] In some embodiments, the locking member further includes a locking body and a driving member, the driving member being connected to the locking body and the protruding member, wherein in the second state, the driving member is used to drive the protruding member to move toward the fixing groove.
[0015] In some embodiments, the driving member includes a fixed part, a rotating part, and a connecting part. A first end of the fixed part is connected to the locking body, and a second end of the fixed part is rotatably connected to the rotating part. The connecting part includes a connecting ring and a connecting rod. The connecting ring is connected to the fixed part and is rotatable relative to the fixed part. A first end of the connecting rod is hinged to the protruding member, and a second end of the connecting rod is hinged to the connecting ring. When the rotating part is rotated, the rotating part moves along the length direction of the fixed part, so that the protruding member moves in a direction closer to or away from the fixed part.
[0016] In some embodiments, the locking member further includes a rotating handle connected to the rotating part, and the rotating handle has anti-slip protrusions on its periphery.
[0017] In some embodiments, there are multiple fixing holes, which are arranged circumferentially at intervals along the central hole of the fixing ring, and there are multiple locking members, which correspond one-to-one with the multiple fixing holes.
[0018] In some embodiments, the anti-drip sealing rod for drilling holes of mining anchor bolts and anchor cables of the present invention further includes a plurality of positioning elements, all of which are connected to the reinforcing ring. The fixing ring has a plurality of positioning holes, which penetrate the fixing ring along the thickness direction. In the first state, the center line of one of the positioning elements coincides with the center line of one of the positioning holes. In the second state, the positioning element is placed in the positioning hole.
[0019] In some embodiments, the wall of the central hole of the reinforcing ring is provided with a frosted layer.
[0020] In some embodiments, the radial dimension of the central hole of the reinforcing ring gradually increases in the direction in which the reinforcing ring points toward the fixing ring.
[0021] In some embodiments, the central hole of the reinforcing ring includes a first hole segment, a second hole segment, and a third hole segment. In the direction from the reinforcing ring to the fixing ring, the first hole segment, the second hole segment, and the third hole segment are connected in sequence. The diameter of the second hole segment is smaller than the diameter of the third hole segment but larger than the diameter of the first hole segment. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of the anti-drip sealing rod for drilling holes of mine anchor bolts and anchor cables according to an embodiment of the present invention.
[0023] Figure 2 This is a partial structural cross-sectional schematic diagram of the anti-drip sealing rod for drilling holes of mining anchor bolts and cables according to an embodiment of the present invention.
[0024] Figure 3 This is a schematic diagram of the locking component of the anti-drip sealing rod for the drilling hole of the mine anchor bolt and anchor cable according to an embodiment of the present invention.
[0025] Figure 4 This is a schematic diagram of the locking component (hidden locking body) of the anti-drip sealing rod for mine anchor bolts and anchor cables in an embodiment of the present invention.
[0026] Figure 5 This is a partial structural schematic diagram of the anti-drip sealing rod for drilling holes of mine anchor bolts and anchor cables according to an embodiment of the present invention.
[0027] Figure 6 This is a top view schematic diagram of the reinforcement component of the anti-drip sealing rod for the drilling hole of the mine anchor bolt and anchor cable according to an embodiment of the present invention.
[0028] Figure 7 yes Figure 6 The schematic diagram is shown in the AA direction section view.
[0029] Figure 8 yes Figure 6 A cross-sectional schematic diagram of another embodiment in the AA direction is shown.
[0030] Figure label:
[0031] 100. Anchor bolts or anchor cables,
[0032] 1. Retaining ring; 11. Retaining hole; 111. Retaining groove; 13. Positioning hole.
[0033] 2. Sealing sleeve,
[0034] 3. Reinforced components,
[0035] 31. Reinforcing ring; 311. First hole segment; 312. Second hole segment; 313. Third hole segment.
[0036] 32. Locking component; 320. Extending component; 321. Locking body; 322. Driving component; 3221. Fixing part; 3222. Rotating part; 3223. Connecting part; 32231. Connecting ring; 32232. Connecting rod; 3224. Rotating handle.
[0037] 33. Positioning components,
[0038] 4. Frosted layer. Detailed Implementation
[0039] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0040] like Figures 1-8 As shown, the anti-drip sealing rod for drilling holes of mine anchor bolts and anchor cables according to an embodiment of the present invention includes: a fixing ring 1, a sealing sleeve 2, and a reinforcing component 3.
[0041] A retaining ring 1 is fitted onto the anchor bolt or anchor cable 100 and is arranged adjacent to the borehole. A sealing sleeve 2 is fitted onto the anchor bolt or anchor cable 100, with one end of the sealing sleeve 2 adjacent to the borehole passing through the central hole of the retaining ring 1 and sealingly connected to the retaining ring 1. The reinforcing assembly 3 includes a reinforcing ring 31 and a locking member 32. The locking member 32 is connected to the retaining ring 1 and has a first state and a second state. In the first state, the locking member 32 is in contact with the retaining ring 1 and is movable relative to the anchor bolt or anchor cable 100. In the second state, at least a portion of the locking member 32 abuts against the retaining ring 1, and the reinforcing member abuts against the end of the sealing sleeve 2 away from the borehole to restrict movement of the sealing sleeve 2 in a direction away from the borehole.
[0042] Specifically, such as Figure 1 and Figure 2 As shown, the retaining ring 1 is fitted onto the anchor rod or anchor cable 100 and positioned adjacent to the borehole to seal it. The anchor rod or anchor cable 100 passes through the sealing sleeve 2, allowing the right end of the sealing sleeve 2 to pass through the central hole of the retaining ring 1 and be placed inside the borehole to seal the gap between the anchor rod or anchor cable 100 and the borehole. It should be noted that the sealing sleeve 2 is a conical structure and is made of soft rubber material.
[0043] It is understood that in some embodiments, the fixing ring 1 is provided with a fixing hole 11, and the fixing hole 11 is along the thickness direction of the fixing ring 1 (e.g., Figure 1The fixing ring 1 is penetrated in the left and right direction. The fixing hole 11 has a fixing groove 111 on its hole wall. The locking member 32 includes a protruding member 320. In the second state, the protruding member 320 is fitted in the fixing groove 111, and at least a portion of the protruding member 320 abuts against the groove wall of the fixing groove 111.
[0044] In other words, in the first state, the right end of the locking member 32 is in contact with the fixing ring 1, and the locking member 32 can move relative to the fixing ring 1 in the left and right direction; in the second state, the right end of the locking member 32 is placed in the fixing hole 11, and the protruding member 320 moves towards the fixing groove 111, so that the protruding member 320 abuts against the groove wall of the fixing groove 111, thereby ensuring that the locking member 32 can move relative to the fixing ring 1 in the left and right direction. At this time, since the sealing sleeve 2 is placed between the locking member 32 and the fixing member, and the locking member 32 is in the second state, it can tightly press the sealing sleeve 2 onto the drill hole, thereby strengthening the sealing performance between the sealing sleeve 2 and the drill hole. Correspondingly, the sealing sleeve 2 cannot move from right to left under the obstruction of the locking member 32, avoiding the sealing sleeve 2 from loosening and causing a gap between it and the drill hole, further ensuring the sealing performance between the sealing sleeve 2 and the drill hole.
[0045] In other words, after the sealing sleeve 2 is installed on the fixing ring 1, the second state of the reinforcing component 3 in the mine anchor bolt and anchor cable drilling anti-drip sealing rod of the embodiment of the present invention uses the second state of the reinforcing component 3 to abut against the fixing ring 1, so that the reinforcing component 3 can limit the movement of the sealing sleeve 2 in a direction away from the drilling hole, thereby ensuring the stability of the installation of the sealing sleeve 2 and thus ensuring the sealing effect.
[0046] In some embodiments, the locking member 32 further includes a locking body 321 and a driving member 322. The driving member 322 is connected to the locking body 321 and to the protruding member 320. In a second state, the driving member 322 is used to drive the protruding member 320 to move toward the fixing groove 111.
[0047] Specifically, such as Figures 1-3 As shown, the locking body 321 is a cylindrical shape with an opening at the top. The driving member 322 and the telescopic member are both placed in the inner cavity of the locking body 321. The driving member 322 is connected to the extension member 320 so that the driving member 322 can drive the extension member 320 to move, thereby ensuring that the extension member 320 is inserted into the fixing groove 111 in the second state.
[0048] It is understandable that the drive component 322 can be a structure or device with linear reciprocating function, such as a crank-connecting rod mechanism.
[0049] In some embodiments, the drive member 322 includes a fixing part 3221, a rotating part 3222, and a connecting part 3223. The first end of the fixing part 3221 is connected to the locking body 321, and the second end of the fixing part 3221 is rotatably connected to the rotating part 3222. The connecting part 3223 includes a connecting ring 32231 and a connecting rod 32232. The connecting ring 32231 is connected to the fixing part 3221 and is rotatable relative to the fixing part 3221. The first end of the connecting rod 32232 is hinged to the protruding member 320, and the second end of the connecting rod 32232 is hinged to the connecting ring 32231. When the rotating part 3222 is rotated, the rotating part 3222 moves along the length direction of the fixing part 3221, so that the protruding member 320 moves in a direction closer to or away from the fixing part 3221.
[0050] Specifically, such as Figures 1-4 As shown, the right end of the fixing part 3221 is connected to the bottom wall of the locking body 321, and the rotating part 3222 is connected to the left end of the fixing part 3221. The rotating part 3222 is rotatable relative to the fixing part 3221 about the axis of the fixing part 3221. The connecting ring 32231 is fitted onto the fixing part 3221, and the connecting rod 32232 is connected to the connecting ring 32231 and the connecting rod 32232 by a hinge, so that the rotating part 3222 rotates to drive the connecting ring 32231 to move, thereby driving the protruding part 320 to move.
[0051] It is understood that the right end of the rotating part 3222 is threadedly connected to the left end of the fixed part 3221, allowing the rotating part 3222 to rotate and move relative to the fixed part 3221 in the left-right direction. The connecting ring 32231 is connected to the rotating part 3222 via a bearing (i.e., the connecting ring 32231 is connected to the outer ring of the bearing, and the rotating part 3222 is connected to the inner ring of the bearing). This allows the rotating part 3222 to move to the right, which in turn moves the connecting ring 32231 to the right. As the connecting ring 32231 moves to the right, the left end of the connecting rod 32232 rotates with the connecting ring 32231, and the right end of the connecting rod 32232 rotates with the protruding member 320. At this time, the protruding member 320 is subjected to force and moves away from the fixed part 3221, inserting into the fixing groove 111 to achieve the locking function. The force received by the protruding member 320 is to overcome the friction between it and the locking body 321. Conversely, the rotating part 3222 moves to the left and drives the protruding part 320 to move towards the fixing part 3221 through the connecting part 3223, so that the protruding part 320 disengages from the fixing groove 111 and engages the locking function.
[0052] In some embodiments, the locking member 32 further includes a rotating handle 3224, which is connected to the rotating part 3222, and the rotating handle 3224 has anti-slip protrusions on its periphery.
[0053] Specifically, such as Figures 1-4 As shown, the rotating handle 3224 is fitted onto the left end of the rotating part 3222, and has multiple anti-slip protrusions arranged at intervals along the circumference of the rotating handle 3224. In other words, the presence of the anti-slip protrusions makes it easier for the operator to rotate the rotating part 3222.
[0054] Preferably, there are multiple fixing holes 11, which are arranged circumferentially along the central hole of the fixing ring 1. There are multiple locking members 32, which correspond one-to-one with the multiple fixing holes 11.
[0055] Specifically, such as Figure 1 and Figure 5 As shown, a locking element 32 is arranged corresponding to a fixing hole 11. In the second state, multiple locking elements 32 are respectively placed in multiple fixing holes 11 to strengthen the locking strength between the reinforcing component 3 and the fixing ring 1, further improve the sealing relationship between the sealing sleeve 2 and the reinforcing ring 31, and improve the sealing effect.
[0056] In some embodiments, the anti-drip sealing rod for drilling holes of mining anchor bolts and anchor cables of the present invention further includes a plurality of positioning elements 33, all of which are connected to the reinforcing ring 31. A plurality of positioning holes 13 are opened on the fixing ring 1, and the positioning holes 13 penetrate the fixing ring 1 along the thickness direction of the fixing ring 1. In a first state, the center line of one positioning element 33 coincides with the center line of one positioning hole 13. In a second state, the positioning element 33 is placed in the positioning hole 13.
[0057] Specifically, such as Figures 1-8 As shown, the positioning element 33 is cylindrical. In the second state, the positioning element 33 fits into the positioning hole 13, and the outer peripheral wall of the positioning element 33 contacts the hole wall of the positioning hole 13, thereby realizing the positioning function.
[0058] Understandably, after the sealing sleeve 2 is installed on the drilled hole, the reinforcing component 3 is placed on the left side of the fixing ring 1. By utilizing the corresponding matching function of the positioning part 33 and the positioning hole 13, the reinforcing component 3 is quickly put into the first state (i.e., one positioning part 33 corresponds to one positioning hole 13). The reinforcing component 3 is moved from left to right, and the positioning part 33 is gradually inserted into the positioning hole 13 until the positioning part 33 and the positioning hole 13 are fully engaged. Then, the rotating handle 3224 is turned so that the protruding part 320 is inserted into the fixing groove 111. At this point, the reinforcing component 3 is in the second state, and the locking function of the reinforcing component 3 is completed.
[0059] Optionally, such as Figure 7As shown, the wall of the central hole of the reinforcing ring 31 is provided with a frosted layer 4. It can be understood that when the reinforcing component 3 is in the second state, the left end of the sealing sleeve 2 is placed inside the central hole, and the left end of the sealing sleeve 2 is in contact with the inner wall of the central hole of the reinforcing ring 31. Therefore, the frosted layer 4 on the wall of the central hole of the reinforcing ring 31 can increase the friction between the sealing sleeve 2 and the reinforcing ring 31, thereby reducing the risk of mutual movement between the sealing sleeve 2 and the reinforcing ring 31 and improving the sealing performance.
[0060] Preferably, in the direction from which the reinforcing ring 31 points to the fixing ring 1, the radial dimension of the central hole of the reinforcing ring 31 gradually increases. It is understood that the sealing sleeve 2 is made of soft rubber, and the diameter of the central hole of the reinforcing ring 31 gradually increases from left to right, making it increasingly difficult for the sealing sleeve 2 to move from right to left, further ensuring the stability of the sealing sleeve 2 connection.
[0061] In some other embodiments, the central hole of the reinforcing ring 31 includes a first hole segment 311, a second hole segment 312, and a third hole segment 313. In the direction from the reinforcing ring 31 to the fixing ring 1, the first hole segment 311, the second hole segment 312, and the third hole segment 313 are connected in sequence. The diameter of the second hole segment 312 is smaller than the diameter of the third hole segment 313 and larger than the diameter of the first hole segment 311.
[0062] Specifically, such as Figure 8 As shown, the first hole segment 311, the second hole segment 312, and the third hole segment 313 are arranged sequentially from top to bottom. After the reinforcing component 3 and the sealing sleeve 2 are installed, the stepped arrangement of the central hole of the reinforcing ring 31 increases the resistance to the upward movement of the sealing sleeve 2, thereby reducing the possibility of the sealing sleeve 2 moving upward and improving the stability of the sealing sleeve 2 installation. In the description of this invention, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention 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. Therefore, they should not be construed as limitations on the invention.
[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0064] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0065] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0066] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0067] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.
Claims
1. A drip-proof sealing rod for drilling holes in mining anchor bolts and cables, characterized in that, include: A retaining ring, which is fitted onto the anchor bolt or anchor cable and is arranged adjacent to the borehole; A sealing sleeve is fitted onto the anchor bolt or anchor cable, and one end of the sealing sleeve adjacent to the borehole passes through the central hole of the fixing ring and is sealed to the fixing ring. The reinforcement assembly includes a reinforcement ring and a locking member, the locking member being connected to the fixing ring, and the locking member having a first state and a second state. In the first state, the locking member is in contact with the fixing ring and the locking member is movable relative to the anchor bolt or anchor cable. In the second state, at least a portion of the locking member abuts against the retaining ring, and the reinforcing ring abuts against the end of the sealing sleeve away from the drill hole, in order to restrict the movement of the sealing sleeve in a direction away from the drill hole; The fixing ring has a fixing hole that extends through the fixing ring along its thickness direction. The wall of the fixing hole has a fixing groove. The locking member includes a protruding member. In the second state, the protruding member is engaged in the fixing groove, and at least a portion of the protruding member abuts against the groove wall of the fixing groove. The locking component also includes a locking body and a driving component. The driving component is connected to the locking body and to the protruding component. In the second state, the driving component is used to drive the protruding component to move toward the fixing groove. The driving component includes a fixed part, a rotating part, and a connecting part. The first end of the fixed part is connected to the locking body, and the second end of the fixed part is rotatably connected to the rotating part. The connecting part includes a connecting ring and a connecting rod. The connecting ring is connected to the fixed part and is rotatable relative to the fixed part. The first end of the connecting rod is hinged to the protruding member, and the second end of the connecting rod is hinged to the connecting ring. When the rotating part is rotated, it moves along the length direction of the fixed part, so that the protruding member moves in a direction closer to or away from the fixed part.
2. The anti-drip sealing rod for drilling holes of mining anchor bolts and cables according to claim 1, characterized in that, The locking component also includes a rotating handle, which is connected to the rotating part, and the rotating handle has anti-slip protrusions on its periphery.
3. The anti-drip sealing rod for drilling holes of mine anchor bolts and anchor cables according to any one of claims 2, characterized in that, There are multiple fixing holes, which are arranged circumferentially around the central hole of the fixing ring. There are multiple locking members, which correspond one-to-one with the multiple fixing holes.
4. The anti-drip sealing rod for drilling holes of mine anchor bolts and anchor cables according to claim 3, characterized in that, It also includes multiple positioning elements, all of which are connected to the reinforcing ring. The fixing ring has multiple positioning holes that penetrate the fixing ring along its thickness direction. In the first state, the center line of one positioning element coincides with the center line of one positioning hole. In the second state, the positioning element is placed inside the positioning hole.
5. The anti-drip sealing rod for drilling holes of mine anchor bolts and anchor cables according to claim 4, characterized in that, The wall of the central hole of the reinforcing ring is provided with a frosted layer.
6. The anti-drip sealing rod for drilling holes of mine anchor bolts and anchor cables according to claim 5, characterized in that, In the direction from the reinforcing ring to the fixing ring, the radial dimension of the central hole of the reinforcing ring gradually increases.
7. The anti-drip sealing rod for drilling holes of mine anchor bolts and anchor cables according to claim 4, characterized in that, The central hole of the reinforcing ring includes a first hole segment, a second hole segment, and a third hole segment. In the direction from the reinforcing ring to the fixing ring, the first hole segment, the second hole segment, and the third hole segment are connected in sequence. The diameter of the second hole segment is smaller than the diameter of the third hole segment but larger than the diameter of the first hole segment.
Citation Information
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