An adjustable-depth geostress testing probe

Abstract

This utility model relates to the field of geostress monitoring technology and discloses an adjustable-depth geostress testing probe, including a first shell and a second shell. A connecting mechanism is fixedly connected to the top of the outer wall of the first shell, which is used to quickly connect the probe to the drill rod. Multiple fixing mechanisms are installed at the front end of the second shell, all of which are used to fix the first shell to the second shell. The connecting mechanism includes a fixing ring, which is fixedly connected to the top of the outer wall of the first shell. In this utility model, a disc spring is compressed to continuously accumulate elastic potential energy. Then, the rod is inserted into the middle of the fixing ring, and the pressing plate is released. The disc spring returns to its elastic state and pushes the buckle frame towards the rod, causing it to snap into the slot in the lower part of the rod, thus achieving a quick connection between the probe and the drill rod. The connection process is time-saving and labor-saving, improving testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of geostress monitoring technology, and in particular to a geostress testing probe with adjustable depth. Background Technology

[0002] A geostress testing probe is a specialized device used to accurately measure the internal stress state of underground rock masses or soil. Equipped with high-precision sensors, depth adjustment mechanisms, and data transmission modules, it can penetrate to different depths underground under different geological conditions through drilling to capture the magnitude, direction, and variation characteristics of geostress in real time. The data obtained provides crucial information for geological engineering design, mineral resource development, underground engineering safety assessment, and earthquake monitoring. It is an important technical tool for revealing the distribution patterns of underground stress fields and ensuring engineering safety.

[0003] An adjustable-depth geostress testing probe is a specialized device that allows for precise measurement of the internal stress state of rock or soil at different locations by adjusting the depth of the drill rod. Existing probes connect to the drill rod by machining an external thread at the probe tail and a matching internal thread at the drill rod end. However, during geostress testing, continuous vibrations caused by drilling, rock stress release, or probe operation can gradually loosen the threaded connection, leading to probe detachment or abnormal test data. Current technology welds circular flanges to both the probe tail and the drill rod end, securing them with high-strength bolts. Rubber sealing rings can be added to the flange contact surfaces to enhance sealing. This connection method effectively reduces the negative impact of vibration on the connection. However, during probe assembly and disassembly, it is necessary to tighten or loosen the high-strength bolts one by one, ensuring uniform force on each bolt, which is very time-consuming and labor-intensive, reducing testing efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an adjustable depth ground stress testing probe, which aims to improve the problem in the prior art where the high-strength bolts need to be tightened or loosened one by one during the disassembly and assembly of the probe, and the bolts need to be subjected to uniform force, which is very time-consuming and labor-intensive and reduces the testing efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an adjustable depth geostress testing probe, comprising a first shell and a second shell, wherein a connecting mechanism is fixedly connected to the top of the outer wall of the first shell, the connecting mechanism being used to quickly connect the probe to a drill rod, and multiple fixing mechanisms are installed at the front end of the second shell, the multiple fixing mechanisms being used to fix the first shell and the second shell; the connecting mechanism includes a fixing ring, the fixing ring being fixedly connected to the top of the outer wall of the first shell, and limiting grooves are formed at the left and right ends of the interior of the first shell, a rod is slidably connected to the middle of the fixing ring, and multiple slots are equidistantly formed at the left and right ends of the lower middle part of the outer wall of the rod, and engaging components are installed at the left and right ends of the fixing ring.

[0006] As a further description of the above technical solution:

[0007] Each of the multiple engaging components includes a pressing plate, which is respectively installed at both ends of the first housing. Multiple tension shafts are fixedly connected inside the pressing plate, and steel wire ropes are fixedly connected to the other end of the outer wall of each of the multiple tension shafts. Multiple fixing shafts are fixedly connected to the inner wall of the multiple limiting grooves. The outer wall of the steel wire rope is slidably connected to the outer wall of the fixing shaft. A buckle frame is fixedly connected to the other end of the outer wall of the steel wire rope. The outer wall of the buckle frame is slidably connected to the inside of the limiting groove. A disc spring is fixedly connected to the inner wall of the limiting groove, and the other side of the outer wall of the disc spring is fixedly connected to the outer wall of the buckle frame.

[0008] As a further description of the above technical solution:

[0009] Each of the aforementioned fixing mechanisms includes a rack, and the racks are mounted on the front end of the second housing. A first groove is formed in the middle of the rack, and a fixing block is slidably connected to the middle of the first groove. The front and rear sides of the outer wall of the fixing block are fixedly connected to the interior of the front end of the first housing. A power component is mounted on the front side of the rack.

[0010] As a further description of the above technical solution:

[0011] The power assembly includes a bolt head mounted on the front side of a rack. A rotating shaft is fixedly connected to the rear end of the outer wall of the bolt head. The outer wall of the rotating shaft is rotatably connected to the front end of the second housing. A gear is fixedly connected to the rear end of the outer wall of the rotating shaft. The bottom of the outer wall of the gear meshes with the top of the outer wall of the rack. A ratchet is fixedly connected to the front end of the outer wall of the rotating shaft. The ratchet is mounted on the front side of the outer wall of the second housing. A pawl is mounted on the top outer side of the ratchet. The rear end of the outer wall of the pawl is rotatably connected to the front end of the outer wall of the second housing. The front end of the first housing has multiple fixing slots.

[0012] As a further description of the above technical solution:

[0013] A sensor is installed inside the first housing, and the outer wall of the sensor is slidably connected to the inside of the second housing.

[0014] As a further description of the above technical solution:

[0015] A probe is fixedly connected to the bottom of the outer wall of the first housing, and the probe adopts a conical design.

[0016] As a further description of the above technical solution:

[0017] Multiple protective covers are fixedly connected to the front end of the outer wall of the second housing, and the multiple ratchet wheels are all installed inside the protective covers.

[0018] As a further description of the above technical solution:

[0019] Each of the protective covers has a second sliding groove at its top, and the interior of the second sliding groove is slidably connected to the top of the outer wall of the ratchet frame.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, pressing the pressing plate causes the tension shaft welded to its outer wall to drive the wire rope to slide on the outer wall of the fixed shaft, thereby causing the wire rope to pull the buckle frame to slide inside the limiting groove and compress the disc spring to continuously accumulate elastic potential energy. Then, the rod body is inserted into the middle of the fixed ring and the pressing plate is released. The disc spring returns to its original position through its own elasticity and pushes the buckle frame to move towards the rod body, so that it is locked into the slot in the lower part of the rod body, realizing the quick connection between the probe and the drill rod, which is very time-saving and labor-saving and improves the testing efficiency.

[0022] 2. In this utility model, rotating the bolt head causes the rotating shaft on its outer wall to rotate inside the front end of the second housing, thereby causing the gear connected to the rotating shaft to rotate inside the front end of the second housing. Through the meshing action of the gear and the rack, the rack slides inside the fixing groove, thereby fixing the first housing and the second housing. When it is necessary to maintain the internal sensor, the fixing between them can be released simply by pulling the ratchet bracket. Attached Figure Description

[0023] Figure 1 This is a front view of an adjustable-depth geostress testing probe proposed in this utility model.

[0024] Figure 2 This is a perspective view of an adjustable-depth geostress testing probe proposed in this utility model.

[0025] Figure 3This is a side view of an adjustable-depth geostress testing probe proposed in this utility model.

[0026] Figure 4 for Figure 3 Enlarged view at point A;

[0027] Figure 5 This is a partial structural cross-sectional view of an adjustable-depth geostress testing probe proposed in this utility model.

[0028] Figure 6 This is an exploded view of the fixing mechanism of an adjustable-depth geostress testing probe proposed in this utility model.

[0029] Figure 7 This diagram illustrates the connection mechanism of an adjustable-depth geostress testing probe proposed in this utility model.

[0030] Figure 8 This is a partial structural cross-sectional view of the connection mechanism of an adjustable-depth geostress testing probe proposed in this utility model.

[0031] Figure 9 This is a partial structural diagram of the connection mechanism of an adjustable-depth geostress testing probe proposed in this utility model.

[0032] Legend:

[0033] 1. First outer shell; 2. Second outer shell; 3. Fixing mechanism; 301. Rack; 302. First slide groove; 303. Fixing block; 304. Power assembly; 3041. Bolt head; 3042. Rotating shaft; 3043. Gear; 3044. Pawl holder; 3045. Fixing groove; 3046. Ratchet; 4. Connecting mechanism; 401. Fixing ring; 402. Limiting groove; 403. Rod body; 404. Slot; 405. Engaging assembly; 4051. Pressing plate; 4052. Tensioning shaft; 4053. Fixing shaft; 4054. Steel wire rope; 4055. Buckle holder; 4056. Disc spring; 5. Sensor; 6. Probe head; 7. Protective cover; 8. Second slide groove. Detailed Implementation

[0034] 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.

[0035] Reference Figure 7 , Figure 8 and Figure 9This utility model provides an embodiment of an adjustable depth geostress testing probe, comprising a first outer shell 1 and a second outer shell 2. A connecting mechanism 4 is fixedly connected to the top of the outer wall of the first outer shell 1, which is used to quickly connect the probe to a drill rod. Multiple fixing mechanisms 3 are installed at the front end of the second outer shell 2, which are used to fix the first outer shell 1 to the second outer shell 2. The connecting mechanism 4 includes a fixing ring 401, which is fixedly connected to the top of the outer wall of the first outer shell 1. Limiting grooves 402 are formed at both the left and right ends of the interior of the first outer shell 1. A rod 403 is slidably connected to the middle of the fixing ring 401. Multiple slots 404 are equidistantly formed at the left and right ends of the lower middle part of the outer wall of the rod 403. Engaging components 4 are installed at both ends of the fixing ring 401. 05. Each of the multiple engaging components 405 includes a pressing plate 4051. The multiple pressing plates 4051 are respectively installed at both ends of the first housing 1. Multiple tension shafts 4052 are fixedly connected inside the pressing plate 4051. The other end of the outer wall of each of the multiple tension shafts 4052 is fixedly connected to a wire rope 4054. Multiple fixing shafts 4053 are fixedly connected to the inner wall of the multiple limiting grooves 402. The outer wall of the wire rope 4054 is slidably connected to the outer wall of the fixing shaft 4053. The other end of the outer wall of the wire rope 4054 is fixedly connected to a buckle frame 4055. The outer wall of the buckle frame 4055 is slidably connected to the inside of the limiting groove 402. A disc spring 4056 is fixedly connected to the inner wall of the limiting groove 402. The other side of the outer wall of the disc spring 4056 is fixedly connected to the outer wall of the buckle frame 4055.

[0036] Specifically, pressing the pressing plate 4051 causes the tension shaft 4052 on its outer wall to drive the wire rope 4054 to slide on the outer wall of the fixed shaft 4053 inside the limiting groove 402. The fixed shaft 4053 provides guidance for the wire rope 4054, thereby causing the wire rope 4054 to pull the buckle frame 4055 to slide inside the limiting groove 402. The limiting groove 402 limits the movement trajectory of the buckle frame 4055. Since the disc spring 4056 on the outer side of the buckle frame 4055 is fixed inside the limiting groove 402, when... When the pressing plate 4051 is pressed, the snap-fit ​​bracket 4055 moves into the limiting groove 402 and compresses the disc spring 4056, causing it to continuously accumulate elastic potential energy. Then, the rod 403 is inserted into the middle of the fixing ring 401 and the pressing plate 4051 is released. The disc spring 4056 returns to its original position through its own elasticity and pushes the snap-fit ​​bracket 4055 to move towards the rod 403, so that it is snapped into the slot 404 in the lower part of the rod 403, forming a stable snap-fit. This enables a quick connection between the probe and the drill rod, saving time and effort and improving testing efficiency.

[0037] Reference Figure 4 , Figure 5 and Figure 6Each of the multiple fixing mechanisms 3 includes a rack 301, which is installed at the front end of the second housing 2. A first groove 302 is formed in the middle of each rack 301, and a fixing block 303 is slidably connected to the middle of the first groove 302. The front and rear sides of the outer wall of the fixing block 303 are fixedly connected to the interior of the front end of the first housing 1. A power assembly 304 is installed on the front side of the rack 301. The power assembly 304 includes a bolt head 3041, which is installed on the front side of the rack 301. A rotating shaft 3042 is fixedly connected to the rear end of the outer wall of the bolt head 3041. The outer wall of the shaft 3042 is rotatably connected to the front end of the second housing 2. A gear 3043 is fixedly connected to the rear end of the outer wall of the shaft 3042. The bottom of the outer wall of the gear 3043 meshes with the top of the outer wall of the rack 301. A ratchet 3046 is fixedly connected to the front end of the outer wall of the shaft 3042. The ratchet 3046 is installed on the front side of the outer wall of the second housing 2. A pawl bracket 3044 is installed on the top of the outer side of the ratchet 3046. The rear end of the outer wall of the pawl bracket 3044 is rotatably connected to the front end of the outer wall of the second housing 2. The front end of the first housing 1 has multiple fixing slots 3045.

[0038] Specifically, rotating the bolt head 3041 causes the rotating shaft 3042 on its outer wall to rotate inside the front end of the second housing 2. This, in turn, causes the gear 3043 connected to the rotating shaft 3042 to rotate inside the front end of the second housing 2. Through the meshing action of the gear 3043 and the rack 301, the rack 301 slides inside the fixing groove 3045. The first sliding groove 302 in the middle of the rack 301 allows the fixing block 303, which is fixed to the front end of the second housing 2, to slide. The fixing block 303 provides stable support for the movement of the rack 301. When the rotating shaft 3042 rotates... The ratchet 3046 on its outer wall can rotate with it. The pawl 3044, supported by the second housing 2, cooperates with the ratchet 3046 to form a one-way locking mechanism, which can restrict the reverse rotation of the gear 3043 and maintain the stable position of the rack 301. Therefore, after rotating the bolt head 3041 to move the rack 301 to the fixing groove 3045, the first housing 1 and the second housing 2 can be fixed, ensuring that the two are firmly connected. When the internal sensor 5 needs to be maintained, the pawl 3044 can be pulled through the second slide groove 8 to release the fixation between the first housing 1 and the second housing 2.

[0039] Reference Figure 1 , Figure 2 and Figure 3The first outer shell 1 houses a sensor 5, model KB-2006-J. When the target parameters in the external environment change, the sensitive element of the sensor 5 will undergo physical or chemical changes due to these changes. These changes are then further processed and amplified by a conversion circuit, and finally output an electrical signal corresponding to the measured parameter, thereby realizing the detection and quantification of the target parameter. The outer wall of the sensor 5 is slidably connected to the interior of the second outer shell 2. The bottom of the outer wall of the first outer shell 1 is fixedly connected to a probe head 6, model 2006-deep hole core geostress measuring instrument. It can penetrate to different depths underground under different geological conditions by drilling, and capture the magnitude, direction and change characteristics of geostress in real time. The probe head 6 adopts a conical design. The front end of the outer wall of the second outer shell 2 is fixedly connected to multiple protective covers 7. Multiple ratchet wheels 3046 are installed inside the protective covers 7. The top of each of the multiple protective covers 7 is provided with a second sliding groove 8. The interior of the second sliding groove 8 is slidably connected to the top of the outer wall of the ratchet bracket 3044.

[0040] Specifically, the first housing 1 contains a sensor 5 for detecting and transmitting data. The bottom of the first housing 1 is equipped with a probe head 6, which adopts a conical design to facilitate the probe to penetrate deep into the hole during the detection process, thereby improving the accuracy of the detection. The front end of the second housing 2 is equipped with multiple protective covers 7 to protect the limiting system of the fixing mechanism 3 and prevent damage to the internal ratchet 3046. The top of each protective cover 7 is provided with a second sliding groove 8, which provides a path for the movement of the ratchet pawl 3044, ensuring that the ratchet pawl 3044 can smoothly cooperate with the ratchet 3046. The coordinated action of all components ensures the stable realization of the equipment's detection function.

[0041] Working principle: Pressing the pressing plate 4051 causes the tension shaft 4052 welded to its outer wall to drive the wire rope 4054 to slide on the outer wall of the fixed shaft 4053 welded inside the limiting groove 402. This causes the wire rope 4054 to pull the buckle frame 4055 to slide inside the limiting groove 402. Since the disc spring 4056 welded to the outside of the buckle frame 4055 is fixed inside the limiting groove 402, when the pressing plate 4051 is pressed, the buckle frame... 4055 will move into the limiting groove 402 and compress the disc spring 4056 to continuously accumulate elastic potential energy. Then, the rod 403 is inserted into the middle of the fixing ring 401 and the pressing plate 4051 is released. The disc spring 4056 returns to its elasticity and pushes the buckle bracket 4055 to move towards the rod 403, so that it is snapped into the buckle groove 404 in the lower part of the rod 403, realizing the quick connection between the probe and the drill rod. The connection process is time-saving and labor-saving, which can improve the testing efficiency.

[0042] Rotating the bolt head 3041 causes the rotating shaft 3042 welded to its outer wall to rotate inside the front end of the second housing 2. This, in turn, causes the gear 3043 welded to the rotating shaft 3042 to rotate inside the front end of the second housing 2. Through the meshing action of the gear 3043 and the rack 301, the rack 301 slides inside the fixing groove 3045. The first sliding groove 302 in the middle of the rack 301 allows the fixing block 303, which is fixed to the front end of the second housing 2, to slide, providing stable support for the movement of the rack 301. When the rotating shaft 3042 rotates, the ratchet 3046 mounted on its outer wall can rotate with it. The pawl bracket 3044, supported by the second housing 2, cooperates with the ratchet 3046 to restrict the reverse rotation of the gear 3043. Therefore, after rotating the bolt head 3041 to move the rack 301 to the fixing groove 3045, the first housing 1 and the second housing 2 can be fixed. When the internal sensor 5 needs to be maintained, the pawl bracket 3044 can be pulled through the second slide groove 8 to quickly release the fixation between the first housing 1 and the second housing 2.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable-depth geostress testing probe, comprising a first housing (1) and a second housing (2), characterized in that: A connecting mechanism (4) is fixedly connected to the top of the outer wall of the first outer shell (1). The connecting mechanism (4) is used to quickly connect the probe and the drill rod. A plurality of fixing mechanisms (3) are installed at the front end of the second outer shell (2). The plurality of fixing mechanisms (3) are used to fix the first outer shell (1) and the second outer shell (2). The connecting mechanism (4) includes a fixing ring (401), which is fixedly connected to the top of the outer wall of the first housing (1). Limiting grooves (402) are opened at both the left and right ends of the interior of the first housing (1). A rod (403) is slidably connected to the middle of the fixing ring (401). Multiple slots (404) are equidistantly opened at the left and right ends of the lower middle part of the outer wall of the rod (403). Engaging components (405) are installed at both the left and right ends of the fixing ring (401). Each of the multiple engagement components (405) includes a pressing plate (4051), which is respectively installed at both ends of the first housing (1). Multiple tension shafts (4052) are fixedly connected inside each pressing plate (4051). A steel wire rope (4054) is fixedly connected to the other end of the outer wall of each tension shaft (4052). Multiple fixing shafts (4053) are fixedly connected to the inner walls of the multiple limiting grooves (402). The steel wire rope ( The outer wall of the wire rope (4054) is slidably connected to the outer wall of the fixed shaft (4053). The other end of the outer wall of the wire rope (4054) is fixedly connected to a buckle frame (4055). The outer wall of the buckle frame (4055) is slidably connected to the inside of the limiting groove (402). The inner wall of the limiting groove (402) is fixedly connected to a disc spring (4056). The other side of the outer wall of the disc spring (4056) is fixedly connected to the outer wall of the buckle frame (4055).

2. The adjustable-depth geostress testing probe according to claim 1, characterized in that: Each of the multiple fixing mechanisms (3) includes a rack (301), and each of the multiple racks (301) is installed at the front end of the second housing (2). A first groove (302) is provided in the middle of the rack (301), and a fixing block (303) is slidably connected in the middle of the first groove (302). The front and rear sides of the outer wall of the fixing block (303) are fixedly connected to the front end of the first housing (1). A power assembly (304) is installed on the front side of the rack (301).

3. The adjustable-depth geostress testing probe according to claim 2, characterized in that: The power assembly (304) includes a bolt head (3041), which is mounted on the front side of the rack (301). A rotating shaft (3042) is fixedly connected to the rear end of the outer wall of the bolt head (3041). The outer wall of the rotating shaft (3042) is rotatably connected to the front end of the second housing (2). A gear (3043) is fixedly connected to the rear end of the outer wall of the rotating shaft (3042). A ratchet (3046) is fixedly connected to the front end of the outer wall of the rotating shaft (3042). The ratchet (3046) is mounted on the front side of the outer wall of the second housing (2). A pawl bracket (3044) is mounted on the top of the outer side of the ratchet (3046). The rear end of the outer wall of the pawl bracket (3044) is rotatably connected to the front end of the outer wall of the second housing (2). The front end of the first housing (1) is provided with multiple fixing slots (3045).

4. The adjustable-depth geostress testing probe according to claim 1, characterized in that: A sensor (5) is installed inside the first housing (1), and the outer wall of the sensor (5) is slidably connected to the inside of the second housing (2).

5. The adjustable-depth geostress testing probe according to claim 1, characterized in that: A probe (6) is fixedly connected to the bottom of the outer wall of the first outer shell (1), and the probe (6) adopts a conical design.

6. The adjustable-depth geostress testing probe according to claim 3, characterized in that: The front end of the outer wall of the second housing (2) is fixedly connected with a plurality of protective covers (7), and the plurality of ratchet wheels (3046) are installed inside the protective covers (7).

7. The adjustable-depth geostress testing probe according to claim 6, characterized in that: The top of each of the protective covers (7) is provided with a second sliding groove (8), and the interior of the second sliding groove (8) is slidably connected to the top of the outer wall of the ratchet frame (3044).

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