Deep hole blasting hole sealing device deep hole centering positioning support

Abstract

The utility model relates to the technical field of blasting hole sealer, and disclose deep hole blasting hole sealer deep hole centering positioning support, including outer ring spare, the outer ring spare inner wall rotationally connected with top inner ring, the outer ring spare inner wall rotationally connected with bottom inner ring, top inner ring and bottom inner ring symmetrical distribution, top inner ring and bottom inner ring maximum diameter place surface each other adhere. The utility model discloses through rotatable top inner ring, when its rotation lets hole rotary arm rotate and multiple hole rotary arms expand outward, through pressure fixation and fix the outer ring spare at the drilling hole, subsequently place the bag type hole sealer at the clamping arm, control bottom inner ring rotation and let clamping arm clamp bag type hole sealer, make it keep with the center alignment of drilling, subsequently through the wheel piece auxiliary inward advance bag type hole sealer, let it keep stable centring before inflation, thereby prevent its deviation and collision damage, and can adapt the hole diameter, hole wall and bag type hole sealer condition, improve work efficiency and engineering reliability.

Description

Technical Field

[0001] This utility model belongs to the technical field of blasting sealing devices, and specifically relates to a deep hole centering and positioning bracket for a deep hole blasting sealing device. Background Technology

[0002] A deep-hole blasting sealer is a tool specifically designed for sealing blast holes during deep-hole blasting operations in mines, tunnels, and other engineering projects. It is primarily used to seal the blast hole after explosives are loaded, ensuring both blasting effectiveness and operational safety. High-pressure grouting causes the bladder to expand and tightly adhere to the hole wall, forming an effective sealing layer and avoiding the "hole punching" phenomenon caused by the inadequacy of traditional mud sealing.

[0003] In the current deep-hole blasting operations in coal mines, in order to ensure the quality of hole sealing, it is often necessary to accurately place the sealing device into the center axis of the borehole. However, the existing technology mostly relies on operators to manually place it based on experience or use simple support components for positioning, which has some shortcomings.

[0004] First, due to the large drilling depth and the irregular or locally broken hole walls, simple support is difficult to provide stable and centered support force. During the insertion process, the sealing device is prone to deflection due to gravity, hole wall resistance or hose drag, making it difficult to maintain a continuous centered state.

[0005] Secondly, in vertical or inclined deep holes, if the sealing device, especially the front end of the bag section, is not centered in the hole, it will not only cause uneven stress and poor sealing when the bag expands, affecting the gas extraction effect, but also make the sealing device prone to squeezing, collision, twisting or even damage during the blasting pre-splitting process due to local stress concentration, which will lead to uneven release of blasting energy or even blasting failure.

[0006] In addition, existing temporary fixing methods often lack reliable and adjustable radial support structures, making them unsuitable for different hole diameters and hole wall conditions. They have low installation efficiency and poor repeatability, requiring readjustment for each sealing operation, which seriously affects work efficiency and project reliability. Furthermore, they cannot guarantee that the sealing device will always be in the ideal centering position before grouting expansion. Utility Model Content

[0007] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a deep hole centering and positioning bracket for a deep hole blasting sealing device.

[0008] To achieve the above objectives, this utility model adopts the following technical solution: a deep hole blasting sealing device deep hole centering and positioning bracket, including an outer ring component, a top inner ring rotatably connected to the inner wall of the outer ring component, and a bottom inner ring rotatably connected to the inner wall of the outer ring component. The top inner ring and the bottom inner ring are symmetrically distributed, and their surfaces at the maximum diameter points are in contact with each other. The height of the sides of the top inner ring and the bottom inner ring that are away from each other is the same as the side of the outer ring component. Multiple hole rotating arms are circumferentially arranged on the surface of the outer ring component near the top inner ring. The side of the hole rotating arm near the top inner ring is rotatably connected to the surfaces of the top inner ring and the outer ring component at the same height. A rubber contact pad is fixed on the side of the hole rotating arm near the center of the circle away from the outer ring component. Multiple clamping arms are correspondingly arranged on the side of the bottom inner ring away from the top inner ring and the hole rotating arms. The side of the clamping arms near the bottom inner ring is rotatably connected to the surfaces of the bottom inner ring and the outer ring component at the same height.

[0009] Preferably, both the top inner ring circumferential surface and the bottom inner ring circumferential surface are provided with narrowing grooves, the inner wall of the narrowing groove is provided with a narrowing member, the side of the narrowing member away from the center of the outer ring member is provided with a shaft hole, the inner wall of the shaft hole is rotatably connected with a shaft column, the end of the shaft column away from the shaft hole is fixed with an eccentric wheel, and the end of the eccentric wheel away from the shaft column is fixed with an operating handle.

[0010] Preferably, a rotating shaft is rotatably connected to the inner wall of the narrow groove, a narrowing member is fixed on the circumference of the rotating shaft, and a retaining spring is sleeved at both ends of the rotating shaft.

[0011] Preferably, the shaft hole of the moving part has a plurality of arc-shaped grooves arranged in a circular array on one side, and spring plates are nested in the inner wall of the arc-shaped grooves. The spring plates are distributed in a circular array along the circumferential surface of the shaft column, and both ends of the spring plates are fixed to the circumferential surface of the shaft column.

[0012] Preferably, the outer ring has two side grooves on its circumferential surface, and two fixing posts are fixedly distributed on the inner wall of the side groove away from the operating handle. A return spring is installed in a snap-fit ​​manner on the circumferential surface of the fixing post. Fixing pins are fixed on the circumferential surfaces of the top inner ring and the bottom inner ring. The fixing pins are located on the inner wall of the side groove away from the operating handle of the outer ring. One end of the return spring is snap-fitted to the circumferential surface of the fixing pin.

[0013] Preferably, a plurality of fixing pin grooves are provided through a side groove of the outer ring component away from the fixing post, and the fixing pin grooves are evenly distributed in a circumferential array on a side groove of the outer ring component away from the fixing post.

[0014] Preferably, a V-groove is provided at the end of the clamping arm away from the outer ring, and multiple wheels are rotatably connected to the inner wall of the V-groove.

[0015] Preferably, an extension rod is snapped onto the end of the clamping arm away from the outer ring, and a V-shaped component is threaded onto the end of the extension rod away from the clamping arm. Multiple wheels are rotatably connected to the inner wall of the V-shaped component.

[0016] In summary, this utility model has the following beneficial effects:

[0017] 1. This utility model uses a rotatable top inner ring, which rotates the hole-spinning arms and expands them outwards. The operator can first put the rubber pads into the drill hole. When the multiple rubber pads expand synchronously, the outer ring can be fixed to the drill hole by pressure. Then, the bag-type sealing device is placed at the clamping arm. The rotation of the bottom inner ring is controlled to make the clamping arm hold the bag-type sealing device and keep it aligned with the center of the drill hole. The V-groove allows the clamping arm to adapt to bag-type sealing devices of different diameters. Then, the bag-type sealing device is pushed inward with the help of the wheel, so that it always maintains stable alignment before expansion, thereby preventing it from shifting and being damaged by collision. It can also adapt to the conditions of hole diameter, hole wall and bag-type sealing device, improving work efficiency and engineering reliability.

[0018] 2. This utility model allows operators to easily rotate the top inner ring and bottom inner ring via an operating handle. After the top inner ring and bottom inner ring are rotated into position, the operator can rotate the operating handle by relying on the shaft hole and shaft column. The eccentric wheel contacts the inner wall of the side groove of the outer ring part, thereby generating pressure to restrict the position of the operating handle. At the same time, the narrowing part, the narrowing groove, and the rotating shaft part provide variable space for the operating handle, which makes it easier for the operator to fix the position of the top inner ring and bottom inner ring, improves the user experience, and provides variable space for the angle to prevent the operating handle from undergoing large deformation, thereby improving the service life of the operating handle.

[0019] 3. This utility model limits the rotation angle of the shaft column in the shaft hole by the nesting cooperation of the spring sheet and the embedded groove, so that the operating handle can maintain a predetermined angle after the operator rotates the operating handle, thereby stabilizing the contact between the eccentric wheel and the side groove of the outer ring and improving the fixing effect.

[0020] 4. This utility model allows the operator to fix the extension rod and V-shaped component to the top of the clamping arm through multiple points using the V-groove and V-shaped component of the clamping arm. This "two-point alignment" method ensures that the bag-type sealing device maintains a stable centering effect and prevents it from shifting. At the same time, the wheels of the V-groove and V-shaped component prevent the surface of the bag-type sealing device from being scratched by clamping when the operator pushes the bag-type sealing device inward, thus improving its service life. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2This is a schematic diagram of the inner top ring of this utility model;

[0023] Figure 3 This is a sectional view of the inner bottom ring of this utility model;

[0024] Figure 4 This is a schematic diagram of the narrow moving groove of this utility model;

[0025] Figure 5 This is an exploded view of the narrow moving part of this utility model;

[0026] Figure 6 This is a schematic diagram of the embedded arc groove of this utility model;

[0027] Figure 7 This is a schematic diagram of the spring sheet of this utility model;

[0028] Figure 8 This is a schematic diagram of the wheel component of this utility model.

[0029] Figure label:

[0030] 1. Outer ring component; 101. Top inner ring; 102. Hole rotating arm; 103. Rubber contact pad; 104. Bottom inner ring; 105. Clamping arm;

[0031] 2. Operating handle; 201. Eccentric wheel; 202. Shaft hole; 203. Shaft post;

[0032] 3. Narrow moving slot; 301. Narrow moving part;

[0033] 4. Embedded arc groove; 401. Spring sheet;

[0034] 5. Fixing post; 501. Return spring; 502. Fixing pin;

[0035] 6. V-groove; 601. Wheel component;

[0036] 7. Extension rod; 701. V-shaped component;

[0037] 8. Fixed pin groove. Detailed Implementation

[0038] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0039] The specific embodiments of this utility model are described below with reference to the accompanying drawings:

[0040] Example:

[0041] refer to Figures 1-8 The deep hole blasting sealing device deep hole centering and positioning bracket includes an outer ring 1. A top inner ring 101 is rotatably connected to the inner wall of the outer ring 1, and a bottom inner ring 104 is rotatably connected to the inner wall of the outer ring 1. The top inner ring 101 and the bottom inner ring 104 are symmetrically distributed, and their surfaces at their largest diameters are in contact with each other. The height of the sides of the top inner ring 101 and the bottom inner ring 104 that are furthest from each other is level with the side of the outer ring 1. Multiple rings are arranged in a circumferential array on the side of the outer ring 1 closest to the top inner ring 101. The rotating arm 102 has a side near the top inner ring 101 that is rotatably connected to the surfaces of the top inner ring 101 and the outer ring 1 at the same height. A rubber pad 103 is fixed on the side of the rotating arm 102 near the center and away from the outer ring 1. The bottom inner ring 104 has a plurality of clamping arms 105 on the side away from the top inner ring 101 and corresponding to the rotating arm 102. The side of the clamping arms 105 near the bottom inner ring 104 is rotatably connected to the surfaces of the bottom inner ring 104 and the outer ring 1 at the same height.

[0042] A V-groove 6 is provided at the end of the clamping arm 105 away from the outer ring 1, and multiple wheels 601 are rotatably connected to the inner wall of the V-groove 6.

[0043] Specifically, the rotatable top inner ring 101 rotates, causing the hole rotating arms 102 to rotate accordingly and expand outwards. This allows the operator to first place the rubber pads 103 into the borehole. When the multiple rubber pads 103 expand synchronously, the outer ring 1 can be fixed to the borehole by pressure. Then, the bag-type sealing device is placed at the clamping arm 105, and the bottom inner ring 104 is rotated to clamp the bag-type sealing device, keeping it aligned with the center of the borehole. The V-groove 6 allows the clamping arm 105 to accommodate bag-type sealing devices of different diameters. Subsequently, the wheel 601 assists in pushing the bag-type sealing device inwards, ensuring it remains stably aligned before expansion, thus preventing it from shifting or being damaged by collision. It can also adapt to borehole diameter, borehole wall, and bag-type sealing device conditions, improving work efficiency and engineering reliability.

[0044] Both the top inner ring 101 and the bottom inner ring 104 have narrow grooves 3. The inner wall of the narrow groove 3 is provided with a narrowing member 301. The side of the narrowing member 301 away from the center of the outer ring member 1 has a shaft hole 202. The inner wall of the shaft hole 202 is rotatably connected to a shaft column 203. An eccentric wheel 201 is fixed at the end of the shaft column 203 away from the shaft hole 202. An operating handle 2 is fixed at the end of the eccentric wheel 201 away from the shaft column 203.

[0045] A rotating shaft is rotatably connected to the inner wall of the narrow groove 3. A narrowing component 301 is fixed on the circumference of the rotating shaft. Both ends of the rotating shaft are fitted with retaining rings.

[0046] Specifically, the operating handle 2 allows the operator to easily rotate the top inner ring 101 and the bottom inner ring 104. After the top inner ring 101 and the bottom inner ring 104 are rotated into position, the operator can rotate the operating handle 2 using the shaft hole 202 and the shaft column 203. The eccentric wheel 201 contacts the inner wall of the side groove of the outer ring 1, thereby generating pressure to restrict the position of the operating handle 2. At the same time, the narrowing member 301, the narrowing groove 3, and the rotating shaft provide variable space for the operating handle 2, which makes it easier for the operator to fix the position of the top inner ring 101 and the bottom inner ring 104, improves the user experience, and provides variable space for the angle to prevent the operating handle 2 from undergoing large deformation, thus improving the service life of the operating handle 2.

[0047] The shaft hole 202 of the narrowing member 301 has multiple recessed grooves 4 arranged in a circular array on one side. Spring plates 401 are nested in the inner wall of the recessed grooves 4. The spring plates 401 are distributed in a circular array along the circumferential surface of the shaft column 203. Both ends of the spring plates 401 are fixed to the circumferential surface of the shaft column 203.

[0048] Specifically, the rotation angle of the shaft 203 in the shaft hole 202 is limited by the nesting cooperation between the spring plate 401 and the embedded groove 4, so that the operating handle 2 can maintain a predetermined angle after the operator rotates the operating handle 2, thereby stabilizing the contact between the eccentric wheel 201 and the side groove of the outer ring 1 and improving the fixing effect.

[0049] Two side grooves are formed on the outer ring 1. Two fixing posts 5 are fixedly distributed on the inner wall of the side groove away from the operating handle 2. A return spring 501 is installed in a snap-fit ​​manner on the circumference of the fixing post 5. Fixing pins 502 are fixed on the circumference of the top inner ring 101 and the bottom inner ring 104. The fixing pins 502 are set on the inner wall of the side groove of the outer ring 1 away from the operating handle 2. One end of the return spring 501 is snap-fitted to the circumference of the fixing pin 502.

[0050] Specifically, by means of the cooperation of the fixing column 5, the return spring 501 and the fixing pin 502, after the top inner ring 101 or the bottom inner ring 104 is released from fixation, the return spring 501 releases its elastic potential energy to rotate back to its original position, thereby facilitating operation by the staff.

[0051] Multiple fixing pin grooves 8 are provided through a side groove of the outer ring 1 away from the fixing post 5. The fixing pin grooves 8 are evenly distributed in a circumferential array in a side groove of the outer ring 1 away from the fixing post 5.

[0052] Specifically, through multiple fixed pin slots 8, the operator can also insert pins into the corresponding fixed pin slots 8 according to the position of the operating handle 2 to restrict the position of the operating handle 2, prevent the top inner ring 101 or the bottom inner ring 104 from rotating back to its original position, further restrict its position, and improve the safety of equipment use.

[0053] An extension rod 7 is snapped onto the end of the clamping arm 105 away from the outer ring 1. A V-shaped part 701 is threaded onto the end of the extension rod 7 away from the clamping arm 105. Multiple wheel parts 601 are rotatably connected to the inner wall of the V-shaped part 701.

[0054] Specifically, by fixing the extension rod 7 and the V-shaped component 701 to the top of the clamping arm 105, the operator can fix the bag-type sealing device at multiple points through the V-groove 6 and the V-shaped component 701 of the clamping arm 105. This "two-point alignment" method ensures that the bag-type sealing device always maintains a stable centering effect and prevents it from shifting. At the same time, the wheel 601 of the V-groove 6 and the wheel 601 of the V-shaped component 701 can prevent the surface of the bag-type sealing device from being scratched due to clamping when the operator pushes the bag-type sealing device inward, thus improving its service life.

[0055] The working principle of this utility model is as follows: Step 1: The operator places the entire positioning bracket into the blasting borehole. By pushing or pulling the operating handle 2, the top inner ring 101 is driven to rotate. The rotation of the top inner ring 101 causes the multiple hole-rotor arms 102 connected to it to expand outward. The rubber contact pads 103 at the ends of the hole-rotor arms 102 then press outward against the borehole wall, and the outer ring 1 is stably fixed in the borehole by friction, achieving preliminary centering and positioning.

[0056] Step 2: Place the bag-type hole sealer within the V-groove 6 of the clamping arm 105. Rotate the operating handle 2 connected to the bottom inner ring 104 on the other side to drive the bottom inner ring 104 to rotate. The bottom inner ring 104 causes multiple clamping arms 105 to retract inward, clamping the hole sealer through the V-groove 6 and the wheel 601. The design of the V-groove 6 allows it to accommodate hole sealers of different diameters, ensuring that the hole sealer remains centered in the borehole during clamping.

[0057] Step 3: In the clamped state, the operator pushes the sealing device inward. The wheel 601 rolls freely within the V-groove 6 and V-shaped part 701, reducing friction with the surface of the sealing device and avoiding scratches. An extension rod 7 and V-shaped part 701 can be installed at the end of the clamping arm 105 to achieve stable "two-point alignment".

[0058] Step 4: After the top inner ring 101 or the bottom inner ring 104 has rotated to its position, continue rotating the operating handle 2 to press the eccentric wheel 201 against the inner wall of the side groove of the outer ring 1, forming a self-locking mechanism. The moving part 301 and the spring plate 401 cooperate with the arc groove 4 to limit the rotation angle of the shaft 203, ensuring the stability of the handle position. A pin can also be inserted into the fixing pin groove 8 to further lock the operating handle position and prevent the inner ring from rotating back.

[0059] Step 5: After the operation is completed, pull out the pin and release the operating handle. The return spring 501 pushes the fixing pin 502, causing the top inner ring 101 and the bottom inner ring 104 to automatically rotate back to their original positions. The hole rotating arm 102 and the clamping arm 105 retract, and the bracket can be removed from the hole, completing one work cycle.

[0060] Rotating the top inner ring 101 expands the hole-spinning arm 102, and the rubber contact pad 103 presses against the hole wall, achieving centering and fixing of the bracket. Rotating the bottom inner ring 104 retracts the clamping arm 105, using the V-groove 6 and wheel 601 to clamp and center the sealing device. The wheel 601 rolls forward, avoiding scratching the surface of the sealing device; an extension rod 7 can be added to enhance the centering effect. The eccentric wheel 201, spring plate 401 limit and pin fixation, multiple mechanisms ensure the stability of the operating handle 2 and the inner ring position. The return spring 501 pushes the inner ring to rotate, facilitating bracket retrieval and reuse.

[0061] Through mechanical linkage, locking structure and anti-scratch design, the sealing device can be quickly, accurately and stably aligned and installed in deep holes, which significantly improves the efficiency and reliability of blasting sealing operations and is suitable for engineering environments with different hole diameters and hole wall conditions.

[0062] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0063] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A deep hole blasting hole sealing device deep hole centering positioning support, characterized in that: It includes an outer ring component (1), the inner wall of which is rotatably connected to a top inner ring (101) and a bottom inner ring (104). The top inner ring (101) and the bottom inner ring (104) are symmetrically distributed, and the surfaces of the top inner ring (101) and the bottom inner ring (104) at their largest diameters are in contact with each other. The height of the sides of the top inner ring (101) and the bottom inner ring (104) that are far apart from each other is the same as the side of the outer ring (1). The outer ring (1) has a plurality of hole-rotor arms (102) arranged in a circular array on the side surface near the top inner ring (101). The side of the hole-rotor arm (102) near the top inner ring (101) is rotatably connected to the surfaces of the top inner ring (101) and the outer ring (1) at the same height. A rubber pad (103) is fixed on the side of the hole-rotor arm (102) away from the outer ring (1) near the center. The bottom inner ring (104) is provided with a plurality of clamping arms (105) on the side away from the top inner ring (101) and corresponding to the hole rotating arm (102). The clamping arms (105) are rotatably connected to the bottom inner ring (104) and the outer ring (1) respectively on the side close to the bottom inner ring (104).

2. The deep hole blasting hole sealer deep hole centering and positioning support according to claim 1, characterized in that: Both the top inner ring (101) and the bottom inner ring (104) have narrow grooves (3) on their circumferential surfaces. The inner wall of the narrow groove (3) is provided with a narrowing member (301). The side of the narrowing member (301) away from the center of the outer ring member (1) has a shaft hole (202). The inner wall of the shaft hole (202) is rotatably connected to a shaft column (203). An eccentric wheel (201) is fixed at one end of the shaft column (203) away from the shaft hole (202). An operating handle (2) is fixed at one end of the eccentric wheel (201) away from the shaft column (203).

3. The deep hole stemming device deep hole centering and positioning bracket of claim 2, wherein: The inner wall of the narrow groove (3) is rotatably connected to a rotating shaft, and a narrowing member (301) is fixed on the circumference of the rotating shaft. Both ends of the rotating shaft are fitted with snap rings.

4. The deep hole stemming device deep hole centering and positioning bracket of claim 3, wherein: The shaft hole (202) of the narrowing member (301) has a plurality of arc grooves (4) arranged in a circular array on one side. The inner wall of the arc groove (4) is nested with spring pieces (401). The spring pieces (401) are arranged in a circular array along the circumferential surface of the shaft column (203). Both ends of the spring pieces (401) are fixed to the circumferential surface of the shaft column (203).

5. The deep hole stemming device deep hole centering and positioning bracket of claim 1, wherein: The outer ring (1) has two side grooves on its circumference. Two fixing posts (5) are fixedly distributed on the inner wall of one of the side grooves away from the operating handle (2). A reset spring (501) is installed on the circumference of the fixing post (5). The top inner ring (101) and the bottom inner ring (104) are both fixed with fixing pins (502), and the fixing pins (502) are located on the inner wall of one of the side grooves of the outer ring (1) away from the operating handle (2). One end of the reset spring (501) is engaged with the circumference of the fixing pin (502) for installation.

6. The deep hole stemming device deep hole centering and positioning bracket of claim 5, wherein: Multiple fixing pin grooves (8) are provided through a side groove of the outer ring (1) away from the fixing post (5). The fixing pin grooves (8) are evenly distributed in a circumferential array at a side groove of the outer ring (1) away from the fixing post (5).

7. The deep hole stemming device deep hole centering and positioning bracket of claim 1, wherein: The clamping arm (105) has a V-groove (6) at the end away from the outer ring (1), and multiple wheels (601) are rotatably connected to the inner wall of the V-groove (6).

8. The deep hole stemming device deep hole centering and positioning bracket of claim 1, wherein: An extension rod (7) is snapped onto one end of the clamping arm (105) away from the outer ring (1). A V-shaped part (701) is threaded onto one end of the extension rod (7) away from the clamping arm (105). Multiple wheels (601) are rotatably connected to the inner wall of the V-shaped part (701).

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