A type of borehole stress gauge for mining
By designing a shrinkage structure for the inclusions of a mining borehole stress gauge, and utilizing a pull-back mechanism and a guiding structure, the problem of difficulty in removing the inclusions from the borehole in existing technologies has been solved, enabling convenient extraction of the borehole stress gauge inclusions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN CHUXIANG CONSTR ENG GRP CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-06-02
AI Technical Summary
When existing borehole stress gauges are removed from the borehole, it is difficult to effectively pull out the stress sensor due to the dust accumulation inside the borehole and the roughness of the borehole wall.
A stress gauge for mining boreholes was designed, which adopts an inclusion shrinkage structure. Through a pull-back mechanism and a guide structure, the inclusion can be retracted to the part that contacts the inner wall of the borehole. The retraction of the inclusion is achieved by using a pull rope and spring reset mechanism.
This technology enables the convenient extraction of borehole stress gauge inclusions, solving the problem of difficulty in removing them from the borehole in existing technologies.
Smart Images
Figure CN224317210U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of borehole stress gauge technology, specifically a mine borehole stress gauge. Background Technology
[0002] A borehole stress gauge is an instrument used in geophysics to measure the stress field or relative stress changes within a rock mass.
[0003] In the prior art, when the package of the borehole stress gauge needs to be removed from the hole, it is often difficult to pull out the stress sensor due to the dust accumulation inside the hole and the roughness of the hole wall. Therefore, a mining borehole stress gauge is disclosed. Utility Model Content
[0004] In view of the shortcomings of the prior art mentioned in the background, the present invention provides a mine borehole stress gauge.
[0005] This utility model overcomes the above technical problems by adopting the following technical solution:
[0006] A mining borehole stress gauge includes an oil conservator body. Both sides of the oil conservator body are provided with enclosures. Each enclosure includes a reference frame fixed to the oil conservator body. Two side contact bodies and a bottom contact body are provided on the outer side of the reference frame. A guide structure is provided on the outer side of the reference frame to allow the two side contact bodies to move linearly. The bottom of each bottom contact body has a first inclined surface on both sides, and the top of each side contact body has a second inclined surface with an angle equal to the first inclined surface. The two first inclined surfaces contact the two second inclined surfaces respectively. Multiple pull-back mechanisms are provided on the outer side of the reference frame. The pull-back mechanisms pull the two side contact bodies closer together, and the pull-back structure moves the bottom contact body towards the reference frame.
[0007] As a further embodiment of this utility model: the oil inlet end of the oil conservator is sleeved and fixedly connected to an oil inlet hose, and one end of the oil inlet hose is sleeved and fixedly connected to a T-shaped pipe.
[0008] As a further improvement of this utility model, a digital pressure gauge is fixedly installed at one end of the three-way pipe.
[0009] As a further embodiment of this utility model: the pull-back mechanism includes a pin, a sleeve, a spring, a recessed frame, and two side plates. The two side plates are respectively fixed to two side contact bodies. One end of the pin is inserted and fixed to the bottom of the bottom contact body, and the pin is located in the middle of the two first inclined surfaces. The recessed frame is fixed to the pin, and the recess of the recessed frame is inverted. The pin is inserted in the middle of the recess of the recessed frame. The two ends of the recessed frame are respectively inclined outward and slidably inserted into the two side plates. One end of the sleeve is fixed to the reference frame, and the other end of the pin is slidably inserted into the sleeve. The entire spring is located inside the sleeve, and the two ends of the spring are respectively fixed to the reference frame and the pin.
[0010] As a further improvement of this utility model: through holes are provided at both ends of the reference frame, on the outside of the insert and the sleeve, and a limiting rod is slidably inserted into each through hole.
[0011] As a further improvement of this utility model: one end of the limiting rod is fixed with a limiting head, and a wire hole is opened on the outer side of the limiting head, and a pull rope is tied inside the wire hole.
[0012] As a further improvement of this utility model: the guide structure includes multiple guide bars fixed to the reference frame, the cross-section of the guide bar is T-shaped, and two side contact bodies are slidably sleeved on each guide bar.
[0013] By adopting the above structure, this utility model has the following advantages compared with the prior art:
[0014] The inclusion body of this invention adopts a shrinkable structure. When the inclusion body of the borehole stress gauge needs to be removed from the hole, the inclusion body can retract the part that is in contact with the inner wall of the hole, thereby making it easy to pull out the inclusion body of the borehole stress gauge. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the oil pillow body and the two wrapping bodies of this utility model.
[0017] Figure 3 This is a schematic diagram of a partial internal structure of the package of this utility model.
[0018] Figure 4 This is a cross-sectional view of the package structure of this utility model.
[0019] In the diagram: 1. Package body; 2. Pull rope; 3. T-pipe; 4. Digital pressure gauge; 5. Bottom contact body; 6. Side contact body; 7. Reference frame; 8. Limit head; 9. Oil conservator body; 10. Guide bar; 11. Limit rod; 12. Spring; 13. Insert post; 14. Recessed frame; 15. Side plate; 16. Sleeve. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figures 1-4 In this embodiment of the utility model, a mining borehole stress gauge includes an oil pillow body 9, with a wrapping body 1 on both sides of the oil pillow body 9. The wrapping body 1 includes a reference frame 7 fixed to the oil pillow body 9. Two side contact bodies 6 and a bottom contact body 5 are provided on the outer side of the reference frame 7. A guide structure is provided on the outer side of the reference frame 7 to allow the two side contact bodies 6 to move linearly on it. The bottom of the bottom contact body 5 has a first inclined surface on both sides, and the top of the side contact bodies 6 has a second inclined surface with an inclination equal to that of the first inclined surface. The two first inclined surfaces are in contact with the two second inclined surfaces respectively. Multiple pull-back mechanisms are provided on the outer side of the reference frame 7. The pull-back mechanisms pull the two side contact bodies closer to each other, and the pull-back structure moves the bottom contact body 5 toward the reference frame 7.
[0022] As can be seen from the above connection relationship, when the borehole stress gauge's package 1 needs to be removed from the hole, the pull-back mechanism pulls the two side contact strips closer to each other, and the pull-back structure moves the bottom contact body 5 towards the reference frame 7. Thus, the package 1 adopts a shrinking structure. When the borehole stress gauge's package 1 needs to be removed from the hole, the package 1 can retract the part that is in contact with the inner wall of the hole, thereby making it easy to pull back the borehole stress gauge's package 1.
[0023] Specifically, the oil inlet end of the oil conservator 9 is fitted with an oil inlet hose that is connected to it, and one end of the oil inlet hose is fitted with a three-way pipe 3.
[0024] Specifically, a digital pressure gauge 4 is fixedly installed at one end of the three-way pipe 3; the digital pressure gauge 4 is existing technology, and its specific structure and working principle will not be described in detail here.
[0025] Specifically, the pull-back mechanism includes a pin 13, a sleeve 16, a spring 12, a recess 14, and two side plates 15. The two side plates 15 are respectively fixed to two side contact bodies 6. One end of the pin 13 is inserted and fixed to the bottom of the bottom contact body 5, and the pin 13 is located in the middle of the two first inclined surfaces. The recess 14 is fixed to the pin 13, and the recess of the recess 14 is inverted. The insertion is located in the middle of the recess of the recess 14. The two ends of the recess 14 are respectively inclined outward and slidably inserted into the two side plates 15. One end of the sleeve 16 is fixed to the reference frame 7, and the other end of the pin 13 is slidably inserted into the sleeve 16. The entire spring 12 is located inside the sleeve 16. The two ends of the spring 12 are fixed to the reference frame 7 and the insert post 13 respectively. The spring 12 is in a stretched state. The two ends of the reference frame 7, the insert post 13 and the outer side of the sleeve 16 are all provided with through holes. A limiting rod 11 is slidably inserted into each through hole. A limiting head 8 is fixed to one end of the limiting rod 11. A wire hole is provided on the outer side of the limiting head 8. A pull rope 2 is tied in the wire hole. The limiting rod 11 is pulled out by pulling the rope 2, the spring 12 is reset, and the insert post 13 is pulled back into the sleeve 16. The two ends of the recessed bracket 14 on the insert post 13 move downward. Since the two ends of the recessed bracket 14 are inclined, the recessed bracket 14 pulls back the side contact body 6, and the insert post 13 pulls back the bottom contact body 5.
[0026] Specifically, the guide structure includes multiple guide bars 10 fixed to the reference frame 7. The cross-section of the guide bar 10 is T-shaped, and two side contact bodies 6 are slidably sleeved on each guide bar 10. The guide structure is designed so that the side contact bodies 6 can only move in a relatively linear manner relative to the reference frame 7.
[0027] Working principle: When the borehole stress gauge's casing 1 needs to be removed from the borehole, the limit rod 11 is pulled out by the pull rope 2, the spring 12 returns to its original position, and the insertion post 13 is pulled back into the sleeve 16. The two ends of the recessed bracket 14 on the insertion post 13 move downward. Since both ends of the recessed bracket 14 are inclined, the recessed bracket 14 pulls back the side contact body 6, and the insertion post 13 pulls back the bottom contact body 5. Each contact body separates from the inner wall of the borehole. It can be seen that the casing 1 adopts a shrinking structure. When the borehole stress gauge's casing 1 needs to be removed from the borehole, the casing 1 can shrink back the part that is in contact with the inner wall of the borehole, so that the borehole stress gauge's casing 1 can be easily pulled back.
[0028] 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.
Claims
1. A mine borehole stress gauge, comprising an oil-filled body (9), characterized in that, Both sides of the oil pillow body (9) are provided with a wrapping body (1). The wrapping body (1) includes a reference frame (7) fixed to the oil pillow body (9). Two side contact bodies (6) and a bottom contact body (5) are provided on the outside of the reference frame (7). A guide structure is provided on the outside of the reference frame (7) to allow the two side contact bodies (6) to move linearly on it. The bottom of the bottom contact body (5) is provided with a first inclined surface on both sides. The top of the side contact body (6) is provided with a second inclined surface with an inclination equal to that of the first inclined surface. The two first inclined surfaces are in contact with the two second inclined surfaces respectively. Multiple pull-back mechanisms are provided on the outside of the reference frame (7). The pull-back mechanisms pull the two side contact strips closer to each other. The pull-back structure moves the bottom contact body (5) toward the reference frame (7).
2. The mine borehole stress gauge according to claim 1, characterized in that, The oil inlet end of the oil conservator (9) is fitted with an oil inlet hose that is connected to it, and one end of the oil inlet hose is fitted with a three-way pipe (3).
3. A mine borehole stress gauge according to claim 2, characterized in that, A digital pressure gauge (4) is fixed to one end of the three-way pipe (3).
4. A mine borehole stress gauge according to claim 1, characterized in that, The pull-back mechanism includes a pin (13), a sleeve (16), a spring (12), a recess (14), and two side plates (15). The two side plates (15) are respectively fixed to two side contact bodies (6). One end of the pin (13) is inserted and fixed to the bottom of the bottom contact body (5), and the pin (13) is located in the middle of the two first inclined surfaces. The recess (14) is fixed to the pin (13), and the recess of the recess (14) is inverted. The recess (14) is located in the middle of the recess. The two ends of the recess (14) are inclined outward and slidably inserted into the two side plates (15). One end of the sleeve (16) is fixed on the reference frame (7). The other end of the insert (13) is slidably inserted into the sleeve (16). The spring (12) is located inside the sleeve (16). The two ends of the spring (12) are fixed to the reference frame (7) and the insert (13) respectively.
5. A mine borehole stress gauge according to claim 4, characterized in that, The reference frame (7) has through holes at both ends, the insert (13) and the outer side of the sleeve (16), and a limiting rod (11) is slidably inserted into each through hole.
6. A mine borehole stress gauge according to claim 5, characterized in that, One end of the limiting rod (11) is fixed with a limiting head (8), and a wire hole is opened on the outside of the limiting head (8), and a pull rope (2) is tied inside the wire hole.
7. A mine borehole stress gauge according to claim 6, characterized in that, The guide structure includes multiple guide bars (10) fixed to the reference frame (7). The cross-section of the guide bar (10) is T-shaped, and two side contact bodies (6) are slidably sleeved on each guide bar (10).