Underground drilling track measuring instrument

Abstract

The utility model discloses an underground drilling track measuring instrument which comprises an exploring tube, a plurality of sets of clamping rails are fixedly connected to the exploring tube, connecting strips matched with the clamping rails are installed on a measuring unit, a shell is fixedly connected to the connecting strips, at least two sets of sliding grooves are formed in the shell, a pair of sliding blocks is connected into the sliding grooves in a sliding mode, and the sliding blocks are connected with the exploring tube in a sliding mode. A connecting rod is rotationally connected to the sliding block, a pulley is rotationally connected to the end, away from the connecting rod, of the sliding block, and a first spring is fixedly connected between the side wall of the sliding groove and the sliding block. Compared with the prior art, in the using process of the underground drilling track measuring instrument, friction between the exploring tube and the inner wall of a hole can be reduced, surface abrasion of the exploring tube is reduced, and therefore the service life of the exploring tube is prolonged, the using cost and maintenance pressure of a user are reduced, and the measuring instrument is suitable for popularization and application. And the condition of inaccurate detection data caused by the damage of the probe tube can be avoided to a certain extent.

Description

Technical Field

[0001] This utility model belongs to the technical field of trajectory measurement equipment, specifically relating to a downhole borehole trajectory measuring instrument. Background Technology

[0002] A downhole borehole trajectory measurement instrument typically includes a main unit, a data transmission line, a push rod, and a probe. The probe is mainly used to monitor parameters such as inclination angle, azimuth angle, and borehole depth during the downhole drilling process. This information is crucial for improving drilling accuracy and efficiency. Current probe structures usually adopt a tubular design, and the probe is generally sent into the borehole by a push rod.

[0003] However, traditional probe delivery methods have significant drawbacks. For example, the probe is prone to friction with the borehole wall during delivery, leading to surface wear. This wear significantly shortens the probe's lifespan, increases replacement costs and maintenance burden for users, and may also affect the accuracy of the detection data.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this utility model is to provide a downhole borehole trajectory measuring instrument that can solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0007] A downhole borehole trajectory measuring instrument includes a probe tube comprising a measuring unit and a battery unit, which are detachably connected. Multiple sets of guide rails are fixedly connected to the probe tube, and connecting strips are slidably connected to the guide rails. A housing is fixedly connected to the connecting strips. At least two sets of sliding grooves are provided on the housing. A pair of sliders are slidably connected within the sliding grooves. A connecting rod is rotatably connected to the sliders, and a pulley is rotatably connected to the end of the sliders away from the connecting rods. A first spring is fixedly connected between the sidewall of the sliding groove and the sliders.

[0008] In one or more embodiments of this utility model, the connecting strip is provided with a slot, and the connecting strip is slidably connected to the rail through the slot.

[0009] In one or more embodiments of this utility model, the rail is a T-shaped rail.

[0010] In one or more embodiments of this utility model, the guide rail is an I-shaped guide rail, and the measuring unit is provided with an inverted T-shaped groove that matches the I-shaped guide rail. One end of the I-shaped guide rail is slidably connected in the inverted T-shaped groove.

[0011] In one or more embodiments of this utility model, a first blind hole matching the I-shaped guide rail is provided on the side wall of the inverted T-shaped slide groove, a limit block is slidably connected in the first blind hole, and a second spring is fixedly connected between the limit block and the bottom wall of the first blind hole.

[0012] In one or more embodiments of this utility model, a groove is provided on the slider, a second blind hole is provided on the side wall of the groove, and a first connecting post is fixedly connected to both ends of the connecting rod, with the first connecting post at one end of the connecting rod cooperating with the second blind hole.

[0013] In one or more embodiments of this utility model, a second connecting post is fixedly connected to the pulley, and the second connecting post has a through hole that matches the first connecting post. The second connecting post is rotatably connected to the through hole through the first connecting post.

[0014] In one or more embodiments of this utility model, the measuring unit is provided with a gripping groove that matches the I-shaped guide rail.

[0015] In one or more embodiments of this utility model, a stop block is fixedly connected to the middle of the slide.

[0016] Compared with existing technologies, the downhole borehole trajectory measuring instrument of this utility model can reduce friction between the probe and the borehole wall during use, reduce wear on the probe surface, thereby extending the service life of the probe, reducing user operating costs and maintenance pressure, and to a certain extent avoiding inaccurate detection data due to probe damage. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a downhole borehole trajectory measuring instrument according to one embodiment of the present invention;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure at point A in the middle;

[0020] Figure 3 This is a partial cross-sectional view of a downhole borehole trajectory measuring instrument according to an embodiment of the present invention;

[0021] Figure 4 This is a cross-sectional view of a downhole borehole trajectory measuring instrument according to an embodiment of the present invention;

[0022] Figure 5 for Figure 4 Schematic diagram of the structure at point B;

[0023] Figure 6 This is a partial structural schematic diagram of a downhole borehole trajectory measuring instrument according to one embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram showing the usage state of a downhole borehole trajectory measuring instrument in one embodiment of the present invention.

[0025] Explanation of key figure labels:

[0026] 1. Measuring unit; 101. Inverted T-shaped groove; 1011. First blind hole; 102. Gripping groove; 2. Battery unit; 3. Rail; 301. T-shaped rail; 302. I-shaped rail; 4. Connecting bar; 401. Slot; 5. Housing; 501. Groove; 502. Strip-shaped through hole; 6. Slider; 601. Groove; 602. Second blind hole; 7. First spring; 8. Connecting rod; 801. First connecting post; 9. Pulley; 10. Second connecting post; 1001. Through hole; 11. Second spring; 12. Limiting block. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0028] like Figures 1-3 As shown, a downhole borehole trajectory measuring instrument according to one embodiment of the present invention includes a probe tube, wherein the probe tube includes a measuring unit 1 and a battery unit 2, and the measuring unit 1 and the battery unit 2 are fixed by threaded connection, bolt connection or other detachable connection methods. The measuring unit 1 is used to perform measuring operations, while the battery unit 2 is used to provide power to the measuring unit 1.

[0029] like Figures 1-3As shown, multiple sets of guide rails 3 are fixedly connected to the measuring unit 1. Connecting bars 4 are slidably connected to the guide rails 3, and a housing 5 is fixedly connected to the end of the connecting bar 4 away from the guide rails 3. At least two sets of sliding grooves 501 are provided on the housing 5, and the multiple sets of sliding grooves 501 are evenly distributed on the housing 5. A pair of sliders 6 are slidably connected in the sliding grooves 501. A connecting rod 8 is rotatably connected to the sliders 6. A strip-shaped through hole 502 matching the connecting rod 8 is provided on the housing 5, and the connecting rod 8 can slide in the strip-shaped through hole 502. A pulley 9 is rotatably connected to the end of the connecting rod 8 away from the sliders 6. The pulley 9 can contact the inner wall of the hole. A first spring 7 is fixedly connected between the sliders 6 and the side wall of the sliding groove 501. That is, pressing down on the pulley 9 can move the other two sliders 6 away from each other. After the downward force is removed, the first spring 7 can move the sliders 6 in the opposite direction, so that the probe is placed in a relatively central position in the hole as much as possible.

[0030] Specifically, by setting up the housing 5, slider 6, first spring 7, connecting rod 8, and pulley 9, the number of times the probe collides with the tunnel wall during its movement inside the tunnel can be reduced, thus reducing wear and tear on the probe caused by collisions, extending the service life of the probe, reducing the number of replacements required by the user, thereby reducing the user's replacement costs and maintenance pressure, and minimizing the possibility of damage to the internal mechanism caused by probe collisions affecting the accuracy of the detection data.

[0031] like Figure 6 As shown, the two ends of the connecting rod 8 are respectively fixedly connected to the first connecting post 801. The slider 6 has a groove 601, and the side wall of the groove 601 has a second blind hole 602 that matches the first connecting post 801. One end of the first connecting post 801 is rotatably connected to the second blind hole 602. The pulley 9 is fixedly connected to the second connecting post 10, and the second connecting post 10 has a through hole 1001. The end of the connecting rod 8 away from the slider 6 is rotatably connected to the first connecting post 801 through the through hole 1001.

[0032] like Figure 3 As shown, a stop block is also fixedly connected to the middle of the slide 501. The stop block prevents the two sliders 6 from contacting each other, thereby affecting the normal operation of the sliders 6, the first spring 7, the slider 6, and the pulley 9.

[0033] like Figure 2 As shown, the guide rail 3 is a T-shaped guide rail 301, which is fixedly connected to the measuring unit 1. The connecting strip 4 has a slot 401 that matches the T-shaped guide rail 301. The connecting strip 4 is engaged with the T-shaped guide rail 301 through the slot 401. The guide rail 3 and the connecting strip 4 are interference fit. After the guide rail 3 and the connecting strip 4 are connected, the stability of the connection between the guide rail 3 and the connecting strip 4 can be guaranteed, that is, the guide rail 3 and the connecting strip 4 are not easy to separate.

[0034] When not in use, housing 5 and its components can be removed via connecting strip 4. However, the presence of T-shaped guide rail 301 increases the outer diameter of measuring unit 1, thus increasing the minimum inlet diameter and limiting its usability. To address this issue, as... Figures 4-5 As shown, the guide rail 3 is an I-shaped guide rail 302. The measuring unit 1 has an inverted T-shaped groove 101. One end of the I-shaped guide rail 302 is located inside the inverted T-shaped groove 101, and the other end is located outside the measuring unit 1. That is, the I-shaped guide rail 302 can slide within the inverted T-shaped groove 101. When the bottom wall of the end of the I-shaped guide rail 302 inside the inverted T-shaped groove 101 contacts the bottom wall of the inverted T-shaped groove 101, the end of the I-shaped guide rail 302 outside the inverted T-shaped groove 101 is completely contained within it. This ensures that the outer diameter of the measuring unit 1 remains in its initial state, and the usable range of the measuring unit 1 is not reduced due to the inclusion of the guide rail 3.

[0035] Normally, the I-shaped rail 302 and the inner wall of the inverted T-shaped groove 101 are interference-fitted. To reduce the possibility of the I-shaped rail 302 sliding in the inverted T-shaped groove 101 when not in use, a first blind hole 1011 matching the I-shaped rail 302 is provided on the side wall of the inverted T-shaped groove 101. A limit block 12 is slidably connected in the first blind hole 1011, and a second spring 11 is fixedly connected between the limit block 12 and the bottom wall of the first blind hole 1011. The height of the I-shaped rail 302 is half the depth of the inverted T-shaped groove 101. When the inner wall of the I-shaped rail 302 at one end of the inverted T-shaped groove 101 contacts the bottom wall of the inverted T-shaped groove 101, the limit block 12 can block the upward sliding path of the I-shaped rail 302. Conversely, when the I-shaped rail 302 is fully pulled out, the limit block 12 can block the backward sliding path of the I-shaped rail 302. To further reduce the movement of the I-shaped rail 302, and to keep the I-shaped rail 302 in the required state as much as possible.

[0036] When using, such as Figure 1 , Figure 7 As shown, simply snap the rail 3 and the connecting strip 4 together. Generally, there are three rails 3, evenly distributed on the outer wall of the measuring unit 1. Place the measuring unit 1, with the connecting strip 4 installed, into the hole. The pulley 9 will contact the inner wall of the hole. As the measuring unit 1 moves, the pulley 9 rotates on the inner wall of the hole, keeping the probe as centered as possible.

[0037] When the inner diameter of the hole changes, the first spring 7 will shorten or lengthen according to the size of the inner diameter, so that the pulley 9 can contact the inner wall of the hole. With the setting of the first spring 7, the slider 6, the first spring 7, the connecting rod 8, and the pulley 9 can also be used as a shock-absorbing structure to reduce the vibration of the probe during movement.

[0038] Preferably, the probe is also equipped with a signal transmission unit, which can be wired or wireless. The wired type can be equipped with an explosion-proof cable interface, and the cable can be laid out along the tube. The wireless type can be an explosion-proof wireless transmission module, which can transmit signals to an explosion-proof smart terminal via Bluetooth or WiFi, thereby realizing signal transmission.

[0039] Furthermore, after the connecting strip 4 is removed from the caliper 3 and the caliper 3 is located in the inverted T-shaped groove 101, the head of the probe can be connected to the drill bit and the tail can be connected to the drill rod.

[0040] 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. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A downhole borehole trajectory measuring instrument, characterized in that, include: The probe includes a measuring unit and a battery unit, which are detachably connected. Multiple sets of rails are fixedly connected to the probe, and a connecting strip is slidably connected to the rails. A housing is fixedly connected to the connecting strip. The housing is provided with at least two sets of sliding grooves, a pair of sliders are slidably connected in the sliding grooves, a connecting rod is rotatably connected to the sliders, and a pulley is rotatably connected to the end of the slider away from the connecting rod; A first spring is fixedly connected between the side wall of the groove and the slider.

2. The downhole borehole trajectory measuring instrument according to claim 1, characterized in that, The connecting strip has a slot, and the connecting strip is slidably connected to the rail through the slot.

3. The downhole borehole trajectory measuring instrument according to claim 2, characterized in that, The rail is a T-shaped rail.

4. The downhole borehole trajectory measuring instrument according to claim 2, characterized in that, The guide rail is an I-shaped guide rail, and the measuring unit has an inverted T-shaped groove that matches the I-shaped guide rail. One end of the I-shaped guide rail is slidably connected in the inverted T-shaped groove.

5. The downhole borehole trajectory measuring instrument according to claim 4, characterized in that, The side wall of the inverted T-shaped slide groove is provided with a first blind hole that matches the I-shaped guide rail. A limit block is slidably connected in the first blind hole, and a second spring is fixedly connected between the limit block and the bottom wall of the first blind hole.

6. The downhole borehole trajectory measuring instrument according to claim 1, characterized in that, The slider has a groove, and the side wall of the groove has a second blind hole. Both ends of the connecting rod are fixedly connected to a first connecting post, and the first connecting post at one end of the connecting rod cooperates with the second blind hole.

7. A downhole borehole trajectory measuring instrument according to claim 6, characterized in that, A second connecting post is fixedly connected to the pulley. The second connecting post has a through hole that matches the first connecting post. The second connecting post is rotatably connected to the through hole through the first connecting post.

8. A downhole borehole trajectory measuring instrument according to claim 4, characterized in that, The measuring unit has a gripping groove that matches the I-shaped guide rail.

9. A downhole borehole trajectory measuring instrument according to claim 1, characterized in that, A stop block is fixedly connected to the middle of the chute.

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