Device for measuring working state of spiral through cable drill rod on directional drilling machine

Abstract

The utility model relates to a device for measuring the working state of a spiral through cable drill rod on a directional drilling machine, and belongs to the technical field of drill rod monitoring. Comprising a shaft sleeve, the shaft sleeve is connected to the outer side of a drill rod in a sleeving mode, a rotating sleeve is rotationally arranged on the shaft sleeve, a connecting cylinder is fixedly arranged on the rotating sleeve and is arranged in the radial direction of the rotating sleeve, and an acting ball is arranged at the end, close to the drill rod, of the connecting cylinder and clamped into a spiral groove of the drill rod; an angle measuring assembly is arranged between the shaft sleeve and the rotating sleeve; the problem that errors are prone to occurring in statistics of the driving number of the drill rods during underground drilling at present is solved.

Description

Technical Field

[0001] This utility model belongs to the field of drill rod monitoring technology, specifically relating to a measuring device for the working status of a spiral cable drill rod on a directional drilling rig. Background Technology

[0002] Underground coal seam mining requires the construction of numerous boreholes, especially in outburst-prone mines. Constructing high-quality drainage boreholes is crucial for ensuring safe coal mine production. Currently, drilling in coal mines typically involves 2-3 drillers using a drilling rig to drive drill rods into the coal and rock strata. The borehole depth is determined by counting the number of drill rods and multiplying by the length of each rod. This method is heavily reliant on the skill level of the drillers. If the drillers make errors in counting the drill rods, they may easily classify boreholes with insufficient depth as acceptable. Such shallow boreholes will severely impact subsequent gas drainage, creating significant safety hazards for coal mine production. Therefore, a measuring device is needed to assess the working status of the helical cable drill rods on directional drilling rigs. This device would assist in measuring the advance or retraction of the drill rods, verifying whether the drillers have made errors in counting the drill rods, and allowing for immediate detection of any such errors. Utility Model Content

[0003] This invention overcomes the shortcomings of the prior art and proposes a measuring device for the working status of spiral cable drill rods on directional drilling rigs; it solves the problem that errors easily occur in the statistics of the number of drill rods driven in during downhole drilling.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0005] A measuring device for measuring the working state of a spiral cable drill rod on a directional drilling rig includes a bushing fitted around the outside of the drill rod. A rotating sleeve is rotatably mounted on the bushing, and a connecting cylinder is fixedly mounted on the rotating sleeve. The connecting cylinder is arranged radially along the rotating sleeve, and an actuating ball is provided at one end of the connecting cylinder near the drill rod, the actuating ball being engaged with the spiral groove of the drill rod. An angle measuring component is provided between the bushing and the rotating sleeve.

[0006] Furthermore, the bushing is a cylindrical structure with openings at both ends. A connecting flange is provided at one end of the bushing, and the bushing is fixed to the clamping head through the connecting flange. The rotating sleeve is rotatably connected to the outside of the other end of the bushing through a bearing.

[0007] Furthermore, the rotating sleeve is a cylindrical structure with openings at both ends. Two symmetrical connecting rods are fixedly installed on the outer cylindrical surface of the rotating sleeve, and a connecting cylinder is fixedly installed at the end of each connecting rod away from the rotating sleeve. The two connecting cylinders are symmetrically arranged.

[0008] Furthermore, the connecting cylinder is a cylindrical structure with openings at both ends. One end of the connecting cylinder has an actuating ball mounting hole with an inner diameter equal to the inner diameter of the connecting cylinder. The other end of the connecting cylinder has a bolt mounting hole with an inner diameter smaller than the inner diameter of the connecting cylinder. The actuating ball mounting holes of the two connecting cylinders face each other.

[0009] Furthermore, each connecting cylinder is equipped with a ball seat and a spring. The ball seat is located at the ball mounting hole of the connecting cylinder and includes a coaxial large-diameter section and a small-diameter section. The large-diameter section is located at the ball mounting hole of the connecting cylinder, and the small-diameter section is located inside the connecting cylinder. A ball is rolled on the end face of the large-diameter section away from the small-diameter section, and one end of the ball is located outside the ball mounting hole. A threaded hole is provided on the end face of the small-diameter section away from the large-diameter section, and the end of the small-diameter section away from the large-diameter section extends into the bolt mounting hole of the connecting cylinder. The spring is sleeved on the outside of the small-diameter section of the ball seat, and both ends of the spring are in contact with the large-diameter section and the inner wall of the connecting cylinder, respectively.

[0010] Furthermore, the bolt extends from the bolt mounting hole of the connecting cylinder and is screwed into the threaded hole of the small diameter section of the ball seat, thereby connecting the ball seat to the connecting cylinder.

[0011] Furthermore, the drill rod passes through the clamping head and the bushing in sequence, and the outer ends of the action balls on the two connecting cylinders are respectively engaged in the two spiral grooves of the drill rod, with the two spiral grooves of the drill rod set 180° apart.

[0012] Furthermore, the angle measurement component includes a Hall sensor and a magnetic sheet; a circular array of magnetic sheets is fixedly arranged on the outer cylindrical surface of the rotating sleeve; a control box is fixedly arranged on the outer cylindrical surface of the bushing, and a Hall sensor is fixedly arranged on the control box, with the detection direction of the Hall sensor facing the magnetic sheet side; the wiring harness of the Hall sensor is electrically connected to the controller inside the control box.

[0013] The beneficial effects of this utility model compared to the prior art are as follows:

[0014] This utility model provides a measuring device for the working status of a spiral cable drill rod on a directional drilling rig. Through the cooperation of a rotating sleeve, connecting cylinder, actuating ball, and angle measuring component, it assists in measuring the forward and backward displacement of the drill rod. The auxiliary measured values ​​of the drill rod are compared with the statistics collected by the on-site drillers. Any statistical errors can be detected immediately, ensuring that the number of drill rods driven into the ground is not incorrectly counted. Secondly, it can also statistically measure the angle adjustment of the drill rod, thus obtaining the angle adjustment and its amount during each step of the drill rod's advancement. This achieves full-state monitoring of the drill rod during operation, eliminating errors caused by human statistical analysis. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings:

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention connected to the clamping head;

[0017] Figure 2 This is a side view of the present invention connected to the clamping head;

[0018] Figure 3 This is a schematic diagram of the structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the rotating sleeve.

[0020] Among them, 1 is the bushing, 2 is the drill rod, 3 is the rotating sleeve, 4 is the connecting cylinder, 5 is the actuating ball, 6 is the clamping head, 7 is the connecting rod, 8 is the ball seat, 9 is the spring, 10 is the bolt, 11 is the spiral groove, 12 is the Hall sensor, 13 is the magnetic sheet, and 14 is the control box. Detailed Implementation

[0021] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. The technical solution of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0022] like Figure 1 As shown in Figure 4, this utility model provides a measuring device for the working state of a spiral cable drill rod on a directional drilling rig, including a bushing 1, which is sleeved on the outside of the drill rod 2. A rotating sleeve 3 is rotatably mounted on the bushing 1, and a connecting cylinder 4 is fixedly mounted on the rotating sleeve 3. The connecting cylinder 4 is arranged radially along the rotating sleeve 3, and an action ball 5 is provided at one end of the connecting cylinder 4 near the drill rod 2. The action ball 5 is engaged inside the spiral groove 11 of the drill rod 2. An angle measuring component is provided between the bushing 1 and the rotating sleeve 3.

[0023] The bushing 1 is a cylindrical structure with openings at both ends. A connecting flange is provided at one end of the bushing 1, and the bushing 1 is fixed to the clamping head 6 through the connecting flange. A rotating sleeve 3 is rotatably sleeved on the outside of the other end of the bushing 1 through a bearing.

[0024] The rotating sleeve 3 is a cylindrical structure open at both ends. Two symmetrical connecting rods 7 are fixedly installed on the outer cylindrical surface of the rotating sleeve 3. The length direction of the connecting rods 7 is along the axial direction of the rotating sleeve 3, and the end of the connecting rod 7 away from the rotating sleeve 3 extends away from the clamping head 6. A connecting cylinder 4 is fixedly installed at the end of each of the two connecting rods 7 away from the rotating sleeve 3, and the two connecting cylinders 4 are symmetrically arranged.

[0025] The connecting cylinder 4 is a cylindrical structure with openings at both ends. One end of the connecting cylinder 4 has an actuating ball mounting hole, the inner diameter of which is equal to the inner diameter of the connecting cylinder 4. The other end of the connecting cylinder 4 has a bolt mounting hole, the inner diameter of which is smaller than the inner diameter of the connecting cylinder 4. The actuating ball mounting holes of the two connecting cylinders 4 face each other. Inside each connecting cylinder 4, there is a ball seat 8 and a spring 9. The ball seat 8 is located at the actuating ball mounting hole of the connecting cylinder 4. The ball seat 8 includes a large-diameter section and a small-diameter section that are coaxial. The large-diameter section is located at the actuating ball mounting hole of the connecting cylinder 4, and the small-diameter section is located inside the connecting cylinder 4. An actuating ball 5 is rolled on the end face of the large-diameter section away from the small-diameter section, with one outer end of the actuating ball 5 located outside the actuating ball mounting hole. A threaded hole is provided on the end face of the small-diameter section away from the large-diameter section, and the end of the small-diameter section away from the large-diameter section extends into the bolt mounting hole of the connecting cylinder 4. The spring 9 is sleeved on the outside of the small-diameter section of the ball seat 8, and its two ends contact the large-diameter section and the inner wall of the connecting cylinder 4, respectively. The bolt 10 extends from the bolt mounting hole of the connecting cylinder 4 and is screwed into the threaded hole of the small-diameter section of the ball seat 8, thereby connecting the ball seat 8 and the connecting cylinder 4.

[0026] The drill rod 2 passes through the clamping head 6 and the bushing 1 in sequence. The outer ends of the actuating balls 5 on the two connecting cylinders 4 are respectively engaged with the two spiral grooves 11 of the drill rod 2. The two spiral grooves 11 of the drill rod 2 are set 180° apart. The spring 9 inside the connecting cylinder 4 ensures that the actuating balls 5 are pressed tightly inside the spiral grooves 11 of the drill rod 2.

[0027] The angle measurement assembly includes a Hall sensor 12 and magnetic sheets 13. A ring of magnetic sheets 13 arranged in a circular array is fixedly disposed on the outer cylindrical surface of the rotating sleeve 3. A control box 14 is fixedly disposed on the outer cylindrical surface of the bushing 1, and a Hall sensor 12 is fixedly disposed on the control box 14. The detection direction of the Hall sensor 12 faces the magnetic sheets 13 and is arranged radially along the rotating sleeve 3. The wiring harness of the Hall sensor 12 is electrically connected to a controller inside the control box 14. When the rotating sleeve 3 rotates relative to the bushing 1, the rotating sleeve 3 drives the ring of magnetic sheets 13 on its outer side to rotate. The Hall sensor 12 determines the angle through which the rotating sleeve 3 has rotated by detecting the number of magnetic sheets 13 that have passed.

[0028] The working principle of this utility model is as follows:

[0029] When the helical cable drill rod on the directional drilling rig is pushed into the borehole, the power head of the drilling rig drives the drill rod 2 forward. The helical groove 11 on the outside of the drill rod 2 drives the two connecting cylinders 4 to rotate in opposite directions around the axis of the drill rod 2 through the action ball 5. The two connecting cylinders 4 drive the rotating sleeve 3 to rotate in opposite directions through the connecting rod 7. The angle measured by the angle measuring component is used to obtain the angle through which the rotating sleeve 3 has rotated in opposite directions. The displacement value of the drill rod 2 moving forward is obtained by the angle through which the rotating sleeve 3 has rotated in opposite directions and the pitch of the helical groove 11 on the outside of the drill rod 2.

[0030] During the process of advancing the helical cable drill rod into the borehole on the directional drilling rig, when a new drill rod 2 needs to be added, the drilling direction of the drill bit needs to be measured. The measured value of the drilling direction of the drill bit is compared with the design value. Based on the comparison result, the power head controls the drill rod 2 to rotate forward, adjusting the angle of the drill rod 2. The drill rod 2 drives the drill bit to rotate forward, so that the measured value of the drilling direction of the drill bit corresponds to the design value. During the forward rotation of the drill rod 2, the drill rod 2 does not move along its axial direction, so the drill rod 2 does not give the actuating ball 5 on the connecting cylinder 4 a forward or backward movement tendency. The drill rod 2 drives the two connecting cylinders 4 to rotate forward around the axis of the drill rod 2 through the mutual engagement of its outer helical groove 11 and the actuating ball 5. The two connecting cylinders 4 drive the rotating sleeve 3 to rotate forward through the connecting rod 7. The angle measured by the angle measuring component is used to obtain the angle through which the rotating sleeve 3 rotates. The angle through which the rotating sleeve 3 rotates is the angle through which the drill rod 2 rotates, which is the angle of drill bit adjustment.

[0031] When the auger drill rod on the directional drilling rig is pulled out of the borehole, the auger groove 11 on the outside of the drill rod 2 drives the two connecting cylinders 4 to rotate forward around the axis of the drill rod 2 through the action ball 5. The two connecting cylinders 4 drive the rotating sleeve 3 to rotate forward through the connecting rod 7. The angle measured by the angle measuring component is used to obtain the angle through which the rotating sleeve 3 has rotated forward. The displacement value of the drill rod 2 pulled outward is obtained by the angle through which the rotating sleeve 3 has rotated forward and the pitch of the auger groove 11 on the outside of the drill rod 2.

[0032] 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.

Claims

1. A measuring device for the working state of a spiral cable-driven drill rod on a directional drilling rig, characterized in that: Includes a bushing (1), which is sleeved on the outside of the drill rod (2). A rotating sleeve (3) is rotatably mounted on the bushing (1). A connecting sleeve (4) is fixedly mounted on the rotating sleeve (3). The connecting sleeve (4) is arranged radially along the rotating sleeve (3). An action ball (5) is provided at one end of the connecting sleeve (4) near the drill rod (2). The action ball (5) is engaged inside the spiral groove (11) of the drill rod (2). An angle measuring component is provided between the bushing (1) and the rotating sleeve (3).

2. The measuring device for measuring the working state of the spiral cable drill rod on a directional drilling rig according to claim 1, characterized in that: The bushing (1) is a cylindrical structure with openings at both ends. A connecting flange is provided at one end of the bushing (1), and the bushing (1) is fixed to the clamping head (6) through the connecting flange. The rotating sleeve (3) is rotatably sleeved on the outside of the opening at the other end of the bushing (1) through a bearing.

3. The measuring device for measuring the working state of the spiral cable drill rod on a directional drilling rig according to claim 1, characterized in that: The rotating sleeve (3) is a cylindrical structure with open ends. Two symmetrical connecting rods (7) are fixedly installed on the outer cylindrical surface of the rotating sleeve (3). A connecting cylinder (4) is fixedly installed at the end of the two connecting rods (7) away from the rotating sleeve (3). The two connecting cylinders (4) are symmetrically arranged.

4. The measuring device for measuring the working state of the spiral cable drill rod on a directional drilling rig according to claim 3, characterized in that: The connecting cylinder (4) is a cylindrical structure with openings at both ends. One end of the connecting cylinder (4) is an actuating ball mounting hole, the inner diameter of which is equal to the inner diameter of the connecting cylinder (4). The other end of the connecting cylinder (4) is a bolt mounting hole, the inner diameter of which is smaller than the inner diameter of the connecting cylinder (4). The actuating ball mounting holes of the two connecting cylinders (4) face each other.

5. A measuring device for the working state of a spiral cable-driven drill rod on a directional drilling rig according to claim 4, characterized in that: Inside each connecting cylinder (4), there is a ball seat (8) and a spring (9); the ball seat (8) is located at the ball mounting hole of the connecting cylinder (4), the ball seat (8) includes a large diameter section and a small diameter section coaxially, the large diameter section is located at the ball mounting hole of the connecting cylinder (4), the small diameter section is located inside the connecting cylinder (4), a ball (5) is rolled on the end face of the large diameter section away from the small diameter section, and one end of the outer side of the ball (5) is located outside the ball mounting hole; a threaded hole is provided on the end face of the small diameter section away from the large diameter section, and the end of the small diameter section away from the large diameter section extends into the bolt mounting hole of the connecting cylinder (4); the spring (9) is sleeved on the outer side of the small diameter section of the ball seat (8), and the two ends of the spring (9) are in contact with the large diameter section and the inner wall of the connecting cylinder (4) respectively.

6. A measuring device for measuring the working state of a spiral cable-driven drill rod on a directional drilling rig according to claim 5, characterized in that: The bolt (10) extends from the bolt mounting hole of the connecting sleeve (4) and is screwed into the threaded hole of the small diameter section of the ball seat (8), thereby connecting the ball seat (8) to the connecting sleeve (4).

7. A measuring device for measuring the working state of a spiral cable-driven drill rod on a directional drilling rig according to claim 3, characterized in that: The drill rod (2) passes through the clamping head (6) and the bushing (1) in sequence. The outer end of the action ball (5) on the two connecting cylinders (4) is respectively engaged in the two spiral grooves (11) of the drill rod (2). The two spiral grooves (11) of the drill rod (2) are set 180° apart.

8. A measuring device for the working state of a spiral cable-driven drill rod on a directional drilling rig according to claim 1, characterized in that: The angle measurement assembly includes a Hall sensor (12) and a magnetic sheet (13); a ring of magnetic sheets (13) arranged in a circular array is fixedly arranged on the outer cylindrical surface of the rotating sleeve (3); a control box (14) is fixedly arranged on the outer cylindrical surface of the bushing (1), and a Hall sensor (12) is fixedly arranged on the control box (14). The detection direction of the Hall sensor (12) is towards the side of the magnetic sheet (13); the wiring harness of the Hall sensor (12) is electrically connected to the controller inside the control box (14).

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