A monitoring probe retrieval device for use in an inclined borehole

Abstract

The application discloses a kind of monitoring probe recovery device in inclined borehole, it is related to the technical field of fishing stuck probe.The present application proposes the following scheme, it includes main rod, one end of main rod is fixed with link rod, the end of link rod away from main rod is fixed with hole cleaning head, the outer surface of hole cleaning head is provided with through slot, the both sides of main rod are provided with first recess, the both sides of link rod are provided with second recess, through hole is provided in first recess, shaft pin is inserted on main rod, anti-drop mechanism is arranged in through hole, anti-drop mechanism utilizes split structure design, so that main rod, link rod and hole cleaning head are convenient to disassemble, easy and fast to use, to improve work efficiency;The method of expanding the aperture by punching the hole wall around the probe with the hole cleaning head reduces the risk of damage caused by direct impact on the probe;By providing a through slot on the hole cleaning head, when punching around the probe, it is ensured that the cable can pass through the through slot and will not be cut, so that the cable can be effectively protected.

Description

Technical Field

[0001] This invention relates to the field of salvage technology for stuck probes, and more particularly to a device for recovering monitoring probes in inclined boreholes. Background Technology

[0002] Generally, a test borehole is performed before drilling begins. If a borehole is successfully formed, it indicates that the rock mass within the borehole wall is unlikely to easily detach. Drilling tests (sonic or video recording) also cause minimal disturbance to the borehole wall, thus the probability of collapse during the test is low. Especially in vertically downward-drilling borehole tests, the probe is generally centered and there is no external disturbance. Occasional jamming is usually caused by small stones accidentally knocking off the borehole opening. This can be resolved by moving the probe up and down or by flushing with high-pressure water to dislodge the small stones.

[0003] However, inclined boreholes are completely different from vertical boreholes. An external propulsion device is required to move the probe. The propeller slides along the lower side of the borehole wall. Although measures can be taken to minimize the contact area, generally only two or three protective ribs contact the borehole wall, the disturbance to the surrounding rock mass is still considerable. When encountering layered and fractured rock masses, the disturbance on the lower side may loosen the surrounding rock mass, causing the borehole to collapse and the probe to become stuck.

[0004] In this situation, it is impossible for stones to fall to the bottom of the hole under gravity, and high-pressure water scouring will cause further damage. Since the hole wall becomes smaller after the collapse, only a specific device can be used to repeatedly scrape the hole wall at the narrowed area to increase the hole diameter. This, combined with the use of a retrieval hook (the protective ribs around the propeller and the gap between the cylinder provide a point of leverage) or a retrieval loop to assist in lifting, can effectively solve the problem of the hole being stuck. Summary of the Invention

[0005] (a) Purpose of the invention

[0006] In view of this, the purpose of the present invention is to provide a monitoring probe retrieval device in an inclined borehole, so as to increase the probability of successfully retrieving a stuck probe in an inclined borehole without damaging the probe.

[0007] (II) Technical Solution

[0008] To achieve the above-mentioned technical objectives, the present invention provides a monitoring probe retrieval device for inclined boreholes:

[0009] It includes a main rod, with a connecting rod fixed to one end. A slotted head is fixed to the end of the connecting rod opposite to the main rod. A through groove is formed on the outer surface of the slotted head. First grooves are formed on both sides of the main rod, and second grooves are formed on both sides of the connecting rod. A through hole is formed within each of the first grooves. A pin is inserted into the main rod. An anti-detachment mechanism is provided within the through hole. The anti-detachment mechanism includes a handle, and the middle part of the handle is rotatably connected to the main rod via the pin. Preferably, first threaded holes are formed at both ends of the connecting rod, a second threaded hole is formed at one end of the main rod, and a first threaded post is integrally connected to the other end of the main rod. A second threaded post is integrally connected to the end of the slotted head adjacent to the connecting rod. The first and second threaded posts are threadedly connected to the two first threaded holes respectively. Preferably, the slotted head is cylindrical, with a wall thickness of 2mm, and the wall thickness gradually decreases towards the end opposite to the second threaded post. Preferably, the first and second grooves are staggered. Preferably, the inner wall of the through hole adjacent to both ends of the handle is arc-shaped. Preferably, both ends of the handle have storage slots, and each storage slot has a top block and a limiting block. One end of the top block and the limiting block are telescopically connected to the storage slot, and the other end of the top block and the limiting block abuts against the arc-shaped surface of the end of the through hole. Preferably, a connecting bolt is provided through the middle of each top block and the limiting block, and the two connecting bolts are respectively fixed to the two storage slots by threads. Preferably, each of the two connecting bolts is fitted with a spring, one spring having both ends abutting against the inner wall of one storage slot and the top block, and the other spring having both ends abutting against the other storage slot and the limiting block. Preferably, an anti-detachment rod is welded into the first screw hole at one end of the connecting rod adjacent to the main rod, and the end of the anti-detachment rod away from the first screw hole has an annular groove. Preferably, a U-shaped locking block is integrally connected and fixed to the limiting block, and the U-shaped locking block engages with the annular groove.

[0010] As can be seen from the above technical solutions, this application has the following beneficial effects:

[0011] 1. The modular design allows for easy assembly and disassembly of the main rod, connecting rod, and hole head, making it convenient and quick to use, thereby improving work efficiency.

[0012] 2: The method of enlarging the hole diameter by punching the hole walls around the probe with a punching head reduces the risk of damage to the probe from direct impact.

[0013] 3: By opening a through groove on the punch head, the cable can pass through the through groove without being cut when punching around the probe, thus effectively protecting the cable.

[0014] 4. The split-type structure design allows for easy disassembly and replacement of the hole-cutting head. By replacing the hole-cutting head with different diameters, holes of different sizes can be made, making it widely applicable. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 A schematic diagram of the overall structure of the monitoring probe recovery device in the inclined borehole provided by the present invention; Figure 2 A front view schematic diagram of the structure of the monitoring probe recovery device in the inclined borehole provided by the present invention; Figure 3 The structure of the monitoring probe recovery device in the inclined borehole provided by the present invention Figure 2 Schematic diagram of the frontal section at point AA; Figure 4 The structure of the monitoring probe recovery device in the inclined borehole provided by the present invention Figure 3 A partial structural diagram of the main strut; Figure 5 An exploded view of the structure of the monitoring probe recovery device in the inclined borehole provided by the present invention; Figure 6 The structure of the monitoring probe recovery device in the inclined borehole provided by the present invention Figure 5 Explosion-proof structural diagram of the anti-detachment mechanism;

[0017] Figure 7 The structure of the monitoring probe recovery device in the inclined borehole provided by the present invention Figure 1 A diagram showing another configuration of the center grip.

[0018] Attached diagram descriptions: 1. Main rod; 2. Connecting rod; 3. Hole head; 4. Anti-detachment rod; 5. Shaft pin; 6. Anti-detachment mechanism; 61. Handle; 62. Top block; 63. Limiting block; 64. Connecting bolt; 65. Spring. Detailed Implementation

[0019] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of the various embodiments of this disclosure. Certain details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures.

[0020] Reference Figure 1-7 :

[0021] Example 1

[0022] A monitoring probe retrieval device for inclined boreholes includes a main rod 1, a connecting rod 2 fixed to one end of the main rod 1, and a cutting head 3 fixed to the end of the connecting rod 2 opposite to the main rod 1. The cutting head 3 adopts an integrated design and is made of a sturdy and durable material, which can effectively cut the soil and rock. The design shape is a long cylinder. Since the cutting head 3 is aimed at the blockage between the probe and the original borehole wall, and the probe and cable are very fragile, the designed cutting head 3 must only focus on the blockage and not contact the probe and cable.

[0023] The main body of the punch head 3 is composed of a sturdy and wear-resistant hollow metal cylinder. The hollow cylinder must ensure that the cable can pass through smoothly in the middle, and also have enough strength to cut through the collapsed rock mass at the jamming point.

[0024] The outer diameter of the hole-cutting head is strictly controlled between the maximum outer diameter of the probe and the original hole diameter to ensure that the probe will not be damaged during operation.

[0025] Since the depth of the collapsed borehole cannot be predicted, a through groove is provided on the surface of the hole head 3 to ensure that the cable is always inside the hollow cylinder of the hole head 3 without being damaged.

[0026] In order to ensure the cutting force at the end of the punch head 3, the wall thickness of the punch head 3 is 2mm, and the wall thickness of the punch head 3 gradually decreases towards the end away from the second screw post, thereby improving the cutting force at the end of the punch head 3.

[0027] To facilitate the application of force to twist the main rod 1 and the connecting rod 2, a first groove is provided on both sides of the main rod 1, and a second groove is provided on both sides of the connecting rod 2, so that external tools such as pliers can clamp the main rod 1 and the connecting rod 2 to apply force.

[0028] Specifically, the first groove and the second groove are staggered, which facilitates the application of force in an alternating manner and makes it easier to rotate the main rod 1 and the connecting rod 2.

[0029] To further facilitate the application of force to rotate the main rod 1, a through hole is provided in the first groove of the main rod 1. A shaft pin 5 is inserted into the main rod 1, and an anti-detachment mechanism 6 is provided in the through hole. The anti-detachment mechanism 6 includes a handle 61, and the middle part of the handle 61 is rotatably connected to the main rod 1 through the shaft pin 5. When the handle 61 is rotated out of the through hole, it forms a 90° angle with the main rod 1. Figure 7As shown, the user can easily grip the handle 61 and twist the main rod 1 without the aid of external tools. Specifically, to facilitate the connection between the connecting rod 2 and the main rod and the punch head 3, both ends of the connecting rod 2 are provided with first threaded holes, one end of the main rod 1 is provided with a second threaded hole, and the other end of the main rod 1 is integrally connected with a first threaded post. The end of the punch head 3 adjacent to the connecting rod 2 is integrally connected with a second threaded post. The first threaded post and the second threaded post are respectively threaded to the two first threaded holes. Since the working principle of the punch head 3 requires repeated punching, in order to ensure sufficient impact force, the main rod 1 and the connecting rod 2 are generally made of sturdy and reliable Φ20 ordinary galvanized metal pipe.

[0030] Example 2

[0031] A monitoring probe recovery device for inclined boreholes, based on the first embodiment, uses sturdy and wear-resistant alloy steel as the main material for the hole head 3. For cases with small hole diameter and shallow jamming point, lighter stainless steel can also be used as the body material.

[0032] For drilling holes of different diameters, the hole-cutting head 3 can be designed in three types: small, medium, and large.

[0033] Furthermore, in order to ensure that the handle 61 can be connected and fixed to the through hole after being retracted into the through hole, the inner wall of the through hole adjacent to both ends of the handle 61 is arc-shaped. Both ends of the handle 61 are provided with storage grooves, and the two storage grooves are respectively provided with a top block 62 and a limiting block 63. One end of the top block 62 and the limiting block 63 are telescopically connected to the storage groove, and the other end of the top block 62 and the limiting block 63 abut against the arc-shaped surface of the end of the through hole, so as to ensure that the handle 61 can remain stable in the through hole after being retracted into the through hole. Specifically, a connecting bolt 64 is provided through the middle of both the top block 62 and the limiting block 63, and the two connecting bolts 64 are respectively fixed to the two storage slots by threaded connection, so that the top block 62 and the limiting block 63 can be fixed in the storage slots. The top block 62 and the limiting block 63 are slidably connected to the two connecting bolts 64 respectively. A spring 65 is sleeved on each of the two connecting bolts 64. The two ends of one spring 65 abut against the inner wall of one of the storage slots and the top block 62 respectively, and the two ends of the other spring 65 abut against the other storage slot and the limiting block 63 respectively. The spring 65 can apply elastic force to the top block 62 and the limiting block 63, so that the top block 62 and the limiting block 63 are tightly pressed against the arc surface of the through hole. Furthermore, to prevent the connecting rod 2 from detaching after being connected to the main rod 1, an anti-detachment rod 4 is welded into the first screw hole at one end of the connecting rod 2 adjacent to the main rod 1, and an annular groove is provided at the end of the anti-detachment rod 4 away from the first screw hole. A U-shaped locking block is integrally connected and fixed on the limiting block 63. When the connecting rod 2 is connected and fixed to the main rod 1, the handle 61 is rotated and retracted into the through hole. At this time, the U-shaped locking block can engage with the annular groove, preventing the connecting rod 2 from detaching from the main rod 1 during operation.

[0034] It should be noted that the diameters of the objects connected at the two ends between the main rod 1 and the hole head 3 are significantly different. In general, a connecting rod 2 with sufficient strength is used for the transition.

[0035] However, considering that the punch head 3 needs to be repeatedly impacted, the connecting rod 2 and the main rod 1 and the punch head 3 are prone to loosening, so it is advisable to bear the force as a whole. Therefore, according to the degree of force, the connection method is divided into two types: the split type in Embodiment 1 and the current integrated type. The difference between the integrated type and the split type in Embodiment 1 is that in the integrated type, the main rod 1, the connecting rod 2 and the punch head 3 are fixed by welding.

[0036] Working principle: When using, select the appropriate size of the hole-removing head 3 according to the required hole diameter on site. The diameter of the hole-removing head 3 should be between the hole diameter and the maximum outer diameter of the stuck probe. At the same time, depending on the processing difficulty and hole diameter, select an integrated or split hole-removing tool.

[0037] The probe cable is passed through the pre-reserved groove on the surface of the punch head 3 from the inside of the cylindrical body, and a designated person is responsible for holding it firmly at the opening, keeping it in a taut state at all times to avoid damaging the cable when the punch head 3 repeatedly impacts inside the hole.

[0038] The connecting rod 2 is tightly connected to the hole-cutting head 3 and extends from the hole opening to the top of the probe where it is stuck inside the hole. First, try to punch and cut the blockage around the probe, judge the point of force based on the feel, and adjust the force in time.

[0039] When the surrounding blockages are almost completely cut away, use a retrieval hook to directly hook the probe and pull it out of the jamming point to prevent the borehole from collapsing again after being disturbed.

[0040] After the probe is released from the jamming point, first remove the main rod 1, connecting rod 2 and the punch head 3, tighten the cable to keep it inside the hollow cylinder of the punch head 3, and then remove the jammed probe and check for damage.

[0041] The exemplary implementation of the solution proposed in this disclosure has been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.

Claims

1. A monitoring probe retrieval device for inclined boreholes, comprising a main rod (1), characterized in that, One end of the main rod (1) is fixed with a connecting rod (2), and the end of the connecting rod (2) away from the main rod (1) is fixed with a punch head (3). The outer surface of the punch head (3) is provided with a through groove. Both sides of the main rod (1) are provided with a first groove, and both sides of the connecting rod (2) are provided with a second groove. A through hole is provided in the first groove. A shaft pin (5) is inserted on the main rod (1). An anti-detachment mechanism (6) is provided in the through hole. The anti-detachment mechanism (6) includes a handle (61), and the middle part of the handle (61) is rotatably connected to the main rod (1) through the shaft pin (5). Both ends of the connecting rod (2) are provided with first screw holes, one end of the main rod (1) is provided with a second screw hole, the other end of the main rod (1) is integrally connected with a first screw post, the end of the hole-punching head (3) adjacent to the connecting rod (2) is integrally connected with a second screw post, the first screw post and the second screw post are respectively threaded to the two first screw holes; the inner wall of the through hole adjacent to both ends of the handle (61) is arc-shaped; The handle (61) has storage slots at both ends, and a top block (62) and a limiting block (63) are respectively provided in the two storage slots. One end of the top block (62) and the limiting block (63) are telescopically connected to the storage slots, and the other end of the top block (62) and the limiting block (63) abut against the arc-shaped surface of the end of the through hole. The connecting rod (2) has an anti-detachment rod (4) welded in the first screw hole at one end of the adjacent main rod (1), and the anti-detachment rod (4) has an annular groove at the end away from the first screw hole. The limiting block (63) is integrally connected and fixed with a U-shaped card block, and the U-shaped card block engages with the annular card slot.

2. The monitoring probe retrieval device for inclined boreholes according to claim 1, characterized in that, The punch head (3) is cylindrical, and the wall thickness of the punch head (3) is 2mm. The wall thickness of the punch head (3) gradually decreases towards the end away from the second screw.

3. The monitoring probe retrieval device for inclined boreholes according to claim 1, characterized in that, The first groove and the second groove are staggered.

4. The monitoring probe retrieval device in an inclined borehole according to claim 3, characterized in that, Both the top block (62) and the limiting block (63) are provided with connecting bolts (64) through the middle, and the two connecting bolts (64) are respectively fixed to the two storage slots by threaded connection.

5. A monitoring probe retrieval device for inclined boreholes according to claim 4, characterized in that, Springs (65) are fitted on both of the connecting bolts (64). The two ends of one of the springs (65) abut against the inner wall of one of the storage slots and the top block (62), respectively. The two ends of the other spring (65) abut against the other storage slot and the limiting block (63), respectively.

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