Liftable drill rod guide sleeve structure

Abstract

The utility model relates to the technical field of drilling equipment, and provides a liftable drill rod guide sleeve structure which comprises a base, the top end of the base is fixedly connected with a supporting frame, the inner bottom face of the base is fixedly connected with a motor, the tail end of an output shaft of the motor is fixedly connected with a worm, the outer side of the worm is connected with a worm gear in a meshed mode, and the worm gear is connected with a worm shaft. A worm gear is arranged on the upper portion of the base, a threaded rod is spirally connected to the interior of the worm gear, a lifting block is arranged on the outer side of the upper portion of the threaded rod in a sleeving mode, a first guide sleeve is rotatably connected to the interior of the lifting block, and a drill rod is arranged in the first guide sleeve in a sleeving mode. The problems that the height of a guide sleeve cannot be changed at will, so that the guide sleeve cannot be effectively utilized, the guide sleeve plays a good guiding and supporting role, hole inclination is possibly caused, and the drilling cost is increased are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling equipment, and in particular to a guide sleeve structure of a drill rod that can be lifted and lowered. Background Art

[0002] In real life, human beings have a huge demand for resources such as oil and coal. However, these non-renewable resources are buried hundreds of meters underground. Therefore, it is necessary to use drill rods to drill holes one by one to determine whether there are resources at the bottom. During the drilling process, if the angle deviates, the increased cost is huge. The guide sleeve can ensure that the drill bit can accurately feed in the predetermined direction to avoid the drill bit from deviating during the drilling process. Especially at the beginning of drilling, the guide sleeve can effectively reduce the drill bit "walking" phenomenon and maintain the position accuracy of the hole.

[0003] The patent specification with application number 202021542040.6 discloses a guide sleeve for a rotary drilling drill rod, including a casing, one end of which is provided with an annular boss; the other end of the casing is provided with slots along a circumferential array, and the end of the casing deep into the slot is arc-shaped, and the width of the slot is not less than the width of the key bar on the core section of the rotary drilling drill rod, and the thickness of the casing is not less than the protruding height of the key bar on the core section of the rotary drilling drill rod. There are 3 slots in total. The utility model reduces the gap between the buffer spring and the core section while facilitating installation, making the overall structure of the rotary drilling drill rod more compact during assembly, reducing the breakage of the buffer spring, increasing the appearance, and facilitating manufacturing.

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned guide sleeve for rotary drilling drill rod has the following problems: in the prior art, when the drill rod moves downward, the height of the guide sleeve cannot be changed at will, so that the guide sleeve cannot be effectively utilized to make the guide sleeve play a good guiding and supporting role, causing the hole to tilt. For this reason, we propose a liftable drill rod guide sleeve structure. Utility Model Content

[0005] The utility model provides a drill rod guide sleeve structure that can be raised and lowered, which solves the problem in the related art that the height of the guide sleeve cannot be changed at will, so that the guide sleeve cannot effectively guide the drill rod.

[0006] The technical solution of the utility model is as follows:

[0007] A liftable drill rod guide sleeve structure comprises a base, the top of the base is fixedly connected to a support frame, the inner bottom surface of the base is fixedly connected to a motor, the end of the output shaft of the motor is fixedly connected to a worm, the outer side of the worm is meshingly connected to a worm wheel, the inner part of the worm wheel is spirally connected to a threaded rod, the upper outer part of the threaded rod is sleeved with a lifting block, the inner part of the lifting block is rotatably connected to a first guide sleeve, and the inner part of the first guide sleeve is sleeved with a hollow drill rod.

[0008] Preferably, the inner bottom surface of the base is fixedly connected to a support box, an electric push rod is embedded in the support box, a square groove is opened inside the support box, a slider is slidably connected inside the square groove, a push rod is rotatably connected inside the slider, one end of the push rod is rotatably connected to a support on the outside, and a second guide sleeve is fixedly connected to the top of the support.

[0009] Preferably, two sliding sleeves are symmetrically and fixedly connected inside the lifting block, and a polished rod is fitted inside the sliding sleeve.

[0010] Preferably, a bearing is fitted at the lower portion of the worm wheel, and the bottom end of the bearing fits with the top end of the support box.

[0011] Preferably, an annular groove is provided inside the first guide sleeve, and a plurality of groups of balls are rotatably connected inside the annular groove.

[0012] Preferably, a buffer sheet is fixedly connected to one side of the electric push rod, and the material of the buffer sheet is rubber.

[0013] Preferably, a hexagonal bolt is inserted and connected inside the slider, and the hexagonal end surface of the hexagonal bolt is embedded in the slider.

[0014] Preferably, the height of the square groove is higher than the height of the push rod, and the width of the square groove is the same as the width of the sliding block.

[0015] The working principle and beneficial effects of the utility model are:

[0016] In the utility model, when the staff is drilling, the drill rod will gradually descend with the depth of the hole. During this period, the motor will drive the worm to rotate, the worm drives the worm wheel meshing with it to rotate, the worm wheel drives the threaded rod spirally connected inside it to rotate, the threaded rod drives the lifting block sleeved on the outside of it to descend, and the lifting block drives the first guide sleeve rotatably connected to it to descend, so that the height of the guide sleeve can be changed at will, thereby effectively utilizing the guide sleeve, making the guide sleeve play a good guiding and supporting role, preventing the hole angle from changing during the drilling process and increasing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 This is a schematic diagram of a liftable drill rod guide sleeve structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cutaway structure of the base proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the support box proposed in the utility model;

[0021] Figure 4 This is a schematic diagram of the cutaway structure of the first guide sleeve proposed in the utility model.

[0022] In the figure: 1. base; 2. motor; 3. worm; 4. worm wheel; 5. threaded rod; 6. lifting block; 7. first guide sleeve; 8. hollow drill rod; 9. support frame; 10. bare rod; 11. sliding sleeve; 12. support box; 13. square groove; 14. slider; 15. push rod; 16. support; 17. second guide sleeve; 18. electric push rod; 19. buffer plate; 20. ring groove; 21. ball; 22. bearing; 23. hexagonal bolt. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] like Figure 1 to Figure 4 As shown, this embodiment proposes a liftable drill rod guide sleeve structure, including a base 1, a counterweight block is arranged inside the base 1, which can support the overall structure, the top of the base 1 is fixedly connected to a support frame 9, the shape of the support frame 9 is L-shaped, the inner bottom surface of the base 1 is fixedly connected to a motor 2, the end of the output shaft of the motor 2 is fixedly connected to a worm 3, the outer side of the worm 3 is meshingly connected to a worm wheel 4, the inner part of the worm wheel 4 is spirally connected to a threaded rod 5, the bottom end of the threaded rod 5 is embedded in the inside of a support box 12, passing through the inside of the base 1, the top end of the threaded rod 5 is embedded in the upper part of the support frame 9, which plays a supporting and fixing role, the upper outer side of the threaded rod 5 is sleeved with a lifting block 6, the inner part of the lifting block 6 is rotatably connected to a first guide sleeve 7, which are connected together by bolts to increase the stability of the connection, and the inner part of the first guide sleeve 7 is sleeved with a hollow drill rod 8.

[0026] In this embodiment, the interior of the lifting block 6 is symmetrically fixedly connected with two sliding sleeves 11, and the interior of the sliding sleeve 11 is fitted with a bare rod 10, which can play a good guiding role in the lifting and lowering of the lifting block 6. The lower part of the worm gear 4 is fitted with a bearing 22, and the bottom end of the bearing 22 is fitted with the top end of the support box 12, which plays a role in supporting the worm gear 4, reducing the friction coefficient during the rotation process and ensuring its rotation accuracy. An annular groove 20 is opened inside the first guide sleeve 7, and the internal rotatable connection of the annular groove 20 is multiple groups of balls 21, which can make the outer surface of the hollow drill rod 8 fit with the balls 21 and slide against each other to reduce friction.

[0027] Example 2

[0028] like Figure 1 to Figure 4 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment also proposes a liftable drill pipe guide sleeve structure, including a base 1, a groove is opened on one side of the base 1, the inner bottom surface of the base 1 is fixedly connected to a support box 12, the interior of the support box 12 is inlaid with an electric push rod 18, the interior of the support box 12 is opened with a square groove 13, the interior of the square groove 13 is slidably connected to a slider 14, the interior of the slider 14 is rotatably connected to a push rod 15, which is connected by a hexagonal bolt 23, one end of the push rod 15 is rotatably connected to a support 16 on the outside, the top of the support 16 is fixedly connected to a second guide sleeve 17, and one side of the second guide sleeve 17 is in contact with one side of the support box 12.

[0029] In this embodiment, a buffer sheet 19 is fixedly connected to one side of the electric push rod 18. The material of the buffer sheet 19 is rubber. When the electric push rod 18 pushes the slider 14, the damage to the slider 14 caused by extrusion is reduced and the service life is increased. The inside of the slider 14 is interspersed with a hexagonal bolt 23. The hexagonal end face of the hexagonal bolt 23 is embedded in the inside of the slider 14, saving space and facilitating the sliding of the slider 14 in the square groove 13 so that the surfaces fit each other. The height of the square groove 13 is higher than the height of the push rod 15, and the width of the square groove 13 is the same as the width of the slider 14, leaving enough rotation space for the push rod 15 to rotate upward to prevent extrusion caused by insufficient space, damage to parts, and increased damage.

[0030] Among them, the motor 2 and the electric push rod 18 are prior art and will not be described in detail; at the same time, the utility model also includes a power supply, a controller and a switch, which are not the main technical points of this patent and will not be described in detail; the "front, back, left and right" perspectives of the device are as follows: Figure 1 The direction shown in the figure is used as the reference.

[0031] Working principle: When the worker is drilling, the hollow drill rod 8 will gradually descend with the depth of the hole. During this period, the end of the output shaft of the motor 2 drives the worm 3 to rotate, the worm 3 drives the worm wheel 4 meshing with it to rotate, the worm wheel 4 drives the threaded rod 5 spirally connected inside it to rotate, the threaded rod 5 drives the lifting block 6 sleeved on the outside thereof to descend, the lifting block 6 drives the first guide sleeve 7 rotatably connected to it to descend, so that the hollow drill rod 8 and the ball 21 inside the annular groove 20 of the first guide sleeve 7 slide against each other, and under the action of the polished rod 10 and the sliding sleeve 11, the The height of the guide sleeve can be changed at will, so that the guide sleeve can be effectively utilized, so that the guide sleeve plays a good guiding and supporting role, and the hole angle is prevented from changing during the drilling process, which increases the cost. The electric push rod 18 is started to push the slider 14 to slide inside the square groove 13, and the slider 14 pushes the push rod 15, and the push rod 15 pushes the support 16 to rotate. The support 16 drives the second guide sleeve 17 fixedly connected to it to rotate, so that the angle of the internal hollow drill rod 8 changes, and the purpose of drilling holes at different angles is achieved. There is no need for manual rotation, the operation is convenient, and the labor cost is saved.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A raisable drill pipe guide sleeve structure, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a support frame (9), the inner bottom surface of the base (1) is fixedly connected to a motor (2), the end of the output shaft of the motor (2) is fixedly connected to a worm (3), the outer side of the worm (3) is meshingly connected to a worm wheel (4), the inner part of the worm wheel (4) is spirally connected to a threaded rod (5), the upper outer side of the threaded rod (5) is sleeved with a lifting block (6), the inner part of the lifting block (6) is rotatably connected to a first guide sleeve (7), and the inner part of the first guide sleeve (7) is sleeved with a hollow drill rod (8).

2. A guide sleeve structure for a drill pipe that can be raised and lowered according to claim 1, characterized in that: The inner bottom surface of the base (1) is fixedly connected to a support box (12), the interior of the support box (12) is inlaid with an electric push rod (18), the interior of the support box (12) is provided with a square groove (13), the interior of the square groove (13) is slidably connected to a slider (14), the interior of the slider (14) is rotatably connected to a push rod (15), one end of the push rod (15) is rotatably connected to a support (16) on the outer side, and the top end of the support (16) is fixedly connected to a second guide sleeve (17).

3. The escalable drill pipe guide sleeve structure according to claim 1, characterized in that: Two sliding sleeves (11) are symmetrically and fixedly connected inside the lifting block (6), and a polished rod (10) is fitted inside the sliding sleeve (11).

4. The escalable drill pipe guide sleeve structure according to claim 1, characterized in that: A bearing (22) is fitted at the lower part of the worm wheel (4), and the bottom end of the bearing (22) is fitted at the top end of the support box (12).

5. The escalable drill pipe guide sleeve structure according to claim 1, characterized in that: An annular groove (20) is provided inside the first guide sleeve (7), and a plurality of groups of balls (21) are rotatably connected inside the annular groove (20).

6. The escalable drill pipe guide sleeve structure according to claim 2, characterized in that: A buffer sheet (19) is fixedly connected to one side of the electric push rod (18), and the buffer sheet (19) is made of rubber.

7. The escalable drill pipe guide sleeve structure according to claim 2, characterized in that: A hexagonal bolt (23) is inserted and connected inside the slider (14), and the hexagonal end surface of the hexagonal bolt (23) is embedded in the inside of the slider (14).

8. The escalable drill pipe guide sleeve structure according to claim 2, characterized in that: The height of the square groove (13) is higher than the height of the push rod (15), and the width of the square groove (13) is the same as the width of the slider (14).

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