Rod body tail anti-throwing and anti-eccentricity assembly in turning machining of drill rod

Abstract

A rod body tail anti-throwing and anti-eccentricity assembly in drill rod turning comprises a guide sleeve, a connecting assembly arranged at one end of the guide sleeve and an anti-throwing assembly arranged at the other end of the guide sleeve, the inner diameter of the guide sleeve is larger than the outer diameter of a drill rod body, and the connecting assembly is a connecting flange used for being assembled with a machining lathe. The anti-throwing assembly comprises a plurality of center positioning units composed of positioning arc plates and adjusting bolts, in each center positioning unit, the adjusting bolts penetrate through the sleeve wall in the radial direction of the guide sleeve, the centers of the top walls of the outer arc surfaces of the positioning arc plates are provided with bolt connecting bases, the bolt connecting bases are connected with the tail ends of the adjusting bolts, and the tail ends of the adjusting bolts are connected with the guide sleeve. And the positioning arc plates are erected in an inner cavity of the guide sleeve in a suspended mode, and the multiple positioning arc plates are located on the same circumference all the time. The tail end of the drill rod can be effectively fixed and restrained, and the drifting phenomenon of the drill rod can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of drill rod processing, in particular to a rod body tail anti-swing and anti-eccentricity component in drill rod turning processing. Background Art

[0002] During the turning process of coal mine drill rods, the drill rods need to be horizontally clamped on the lathe chuck for processing. The length of the drill rod is generally 1-1.5 meters. During the turning process of one end of the drill rod, the other end of the drill rod will extend out of the lathe by a certain length, causing the tail of the drill rod to swing when the drill rod rotates at high speed. Swinging not only causes safety accidents, damage to lathe equipment and personal injury, but also leads to damage to the workpiece and unqualified processing quality. The current treatment method is to set up a bracket on the back side of the lathe and support it on the lower side of the drill rod in order to achieve a restraining effect on the tail end of the drill rod, but the actual effect is not good. It can only achieve a certain effect of reducing the swinging, and cannot fundamentally solve the problem. Utility Model Content

[0003] In order to solve the above problems, the purpose of the present invention is to propose an anti-swing and anti-eccentricity component for the tail of the drill rod in the turning process of the drill rod, which can effectively fix and constrain the tail end of the drill rod and effectively solve the tail swing phenomenon of the drill rod.

[0004] The technical solutions adopted by the present invention to solve the above problems are as follows:

[0005] The anti-swing and anti-eccentricity assembly at the tail of the drill rod body in the turning processing of the drill rod includes a guide sleeve, a connecting assembly arranged at one end of the guide sleeve and an anti-swing assembly at the other end. The inner diameter of the guide sleeve is larger than the outer diameter of the drill rod body. The connecting assembly is a connecting flange for assembly with a processing lathe. The anti-swing assembly includes a plurality of center positioning units composed of positioning arc plates and adjusting bolts. In each center positioning unit, the adjusting bolts are all on the cylinder wall radially penetrated by the guide sleeve. A bolt connecting seat is provided at the center of the top wall of the outer arc surface of the positioning arc plate. The bolt connecting seat is connected to the tail end of the adjusting bolt so that the positioning arc plate is suspended in the inner cavity of the guide sleeve, and the plurality of positioning arc plates are always located on the same circumference.

[0006] As a preferred solution of the above technical solution, the anti-swing component includes at least three center positioning units.

[0007] As a preferred solution of the above technical solution, the curvature of the positioning arc plate matches the outer circumferential surface of the drill rod body.

[0008] As a preferred solution of the above technical solution, a plurality of rollers are evenly distributed on the inner arc surface of the positioning arc plate, and the rollers are embedded in the positioning arc plate to form a rolling surface on the inner arc surface of the positioning arc plate.

[0009] As a preferred embodiment of the above technical solution, a plurality of embedded grooves for assembling the rotating roller are provided on the inner arc surface of the positioning arc plate. Shaft holes are provided at both ends of the embedded groove, and rotating shafts adapted to the shaft holes are provided at the centers of both ends of the rotating roller.

[0010] As a preferred embodiment of the above technical solution, a reinforcing sleeve integrally connected to the connecting flange is sleeved on the circumference of the end of the guiding sleeve, and a flange ring for integrally fixing to the connecting flange is provided at the end of the reinforcing sleeve.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The guiding sleeve provided by the utility model is equivalent to extending an additional part on the tail side of the lathe as a fixing sleeve for the drill pipe. By using the clamping and fixing of the positioning arc plate, the drill pipe can be completely fixed along the processing axis, thereby effectively avoiding the swinging phenomenon at the tail of the drill pipe and completely solving the problems brought by the swinging at the tail during the turning process of the drill pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the utility model;

[0014] Figure 2 is a schematic structural diagram of the positioning arc plate.

[0015] Reference numerals in the figures: 1. Guiding sleeve, 2. Connecting flange, 3. Positioning arc plate, 31. Embedded groove, 4. Adjusting bolt, 5. Bolt connection seat, 6. Rotating roller, 61. Rotating shaft, 7. Reinforcing sleeve, 8. Flange ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following provides a relatively detailed and specific description of the specific embodiments of the utility model in conjunction with the drawings. Those not elaborated in detail are the contents that those skilled in the art should be able to understand and master. And this embodiment is only an illustrative elaboration of the specific embodiments of the utility model, and does not limit the technical solutions required to be protected by the utility model.

[0017] Embodiment 1

[0018] As shown in the figure, this embodiment discloses an anti-throwing and anti-eccentricity component for the tail of the rod body in the turning process of drill pipes, which includes a guiding sleeve 1, a connecting component arranged at one end of the guiding sleeve 1, and an anti-throwing component at the other end. The inner diameter of the guiding sleeve 1 is larger than the outer diameter of the drill pipe rod body. The connecting component is a connecting flange 2 for assembling with a processing lathe. The anti-throwing component includes three central positioning units composed of a positioning arc plate 3 and an adjusting bolt 4. The three central positioning units are evenly spaced. In each central positioning unit, the adjusting bolt 4 penetrates through the wall of the guiding sleeve 1 along the radial direction of the guiding sleeve 1. A bolt connecting seat 5 is arranged at the center of the top wall of the outer arc surface of the positioning arc plate 3. The bolt connecting seat 5 is connected to the tail end of the adjusting bolt 4, so that the positioning arc plate 3 is suspended in the inner cavity of the guiding sleeve 1, and multiple positioning arc plates 3 are always located on the same circumference.

[0019] In this embodiment, generally, the outer diameter of the drill pipe is a fixed processing value. Therefore, the inner diameter where the inner arc surface of the positioning arc plate 3 is located is exactly the same as the outer diameter of the drill pipe, that is, the radian of the positioning arc plate 3 matches the outer circumferential surface of the drill pipe rod body, so that the positioning arc plate 3 can be attached to the outer circumference of the drill pipe to achieve the fixing effect on the drill pipe.

[0020] In addition, in this embodiment, the guiding sleeve 1 is equipped with multiple different length specifications and models, and each length specification corresponds to a drill pipe of a corresponding length specification for the processing of drill pipes of various lengths. In actual application, generally, the lathes are grouped. One group of lathes fixedly processes drill pipes with a length of 1 m, another group of lathes fixedly processes drill pipes with a length of 1.2 m, and another group of lathes fixedly processes drill pipes with a length of 1.5 m, and so on. And on the tail side of each lathe, the guiding sleeve 1 of the corresponding specification is assembled and fixed respectively, so as to avoid the cumbersome process of having to replace the guiding sleeve 1 after a certain lathe replaces different types of drill pipes.

[0021] In addition, in order to strengthen the fixed connection strength of the guiding sleeve 1, a reinforcing sleeve 7 integrally connected with the connecting flange 2 is sleeved on the circumferential end of the guiding sleeve 1, and a flange ring 8 for integrally fixing with the connecting flange 2 is arranged at the end of the reinforcing sleeve 7.

[0022] In actual application, the positioning arc plate 3 is a hard and non-deformable rubber plate or a nylon material plate, and a layer of lubricating grease is synchronously coated on the inner arc surface to reduce the rotational friction between the drill pipe and the positioning arc plate 3.

[0023] In addition, the main body of the bolt connection seat 5 is in a frustum shape and is also made of hard rubber with a certain plasticity. A blind hole matching the adjusting bolt 4 is provided at the center of its top. The end of the adjusting bolt 4 is inserted into the blind hole, and the two are relatively fixed through the frictional force of interference fit, and it does not prevent the adjusting bolt 4 from rotating in the blind hole. This structure is mainly to adjust the position of the positioning arc plate 3 (even if the position of the positioning arc plate 3 is adjusted in place once after the drill pipe model is fixed, subsequent adjustments are no longer required). After rotating the adjusting bolt 4, the positioning arc plate 3 will also rotate accordingly. In this way, the inner arc surface of the positioning arc plate 3 will separate from the outer circumferential surface of the drill pipe. After the outer circumferential position where the positioning arc plate 3 is located is fixed, the positioning arc plate 3 can be rotated again to adjust its inner arc surface to a state where it can fit the drill pipe.

[0024] Embodiment 2

[0025] The technical solution of this embodiment is basically the same as that of Embodiment 1. The only difference is that, as Figure 2 shown, a plurality of rotating rollers 6 are evenly distributed on the inner arc surface of the positioning arc plate 3. After the rotating rollers 6 are embedded in the positioning arc plate 3, a rolling surface is formed on the surface of the inner arc surface of the positioning arc plate 3. Specifically, a plurality of inner embedding grooves 31 for assembling the rotating rollers 6 are opened on the inner arc surface of the positioning arc plate 3. Shaft holes are opened at both ends of the inner embedding grooves 31. The centers of both ends of the rotating roller 6 are provided with rotating shafts 61 adapted to the shaft holes. The rotating roller 6 is rotationally embedded in the inner embedding grooves 31 through the rotating shafts 61 to form a rolling surface on the surface of the inner arc surface of the positioning arc plate 3 for direct rolling contact with the outer circumferential surface of the drill pipe. In this embodiment, the contact between the drill pipe and the positioning arc plate 3 is smoother and unobstructed, which can further improve the overall fixation of the drill pipe and better solve the problem of drill pipe tail whipping.

[0026] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. The anti-throwing and anti-eccentric component at the tail of the rod body in the turning process of the drill pipe, characterized in that: It includes a guiding sleeve (1), a connecting component arranged at one end of the guiding sleeve (1) and an anti-throwing component at the other end. The inner diameter of the guiding sleeve (1) is larger than the outer diameter of the drill pipe body. The connecting component is a connecting flange (2) for assembling with a processing lathe. The anti-throwing component includes a plurality of central positioning units composed of positioning arc plates (3) and adjusting bolts (4). In each central positioning unit, the adjusting bolt (4) penetrates through the cylindrical wall along the radial direction of the guiding sleeve (1). A bolt connection seat (5) is arranged at the center of the top wall of the outer arc surface of the positioning arc plate (3). The bolt connection seat (5) is connected to the tail end of the adjusting bolt (4) so that the positioning arc plate (3) is suspended in the inner cavity of the guiding sleeve (1), and the plurality of positioning arc plates (3) are always located on the same circumference.

2. The rod body tail anti-throwing and anti-eccentric component in the drill pipe turning process according to claim 1, characterized in that: The anti-throwing component includes at least three central positioning units.

3. The anti-throwing and anti-eccentric component at the tail of the rod body in the drilling rod turning process according to claim 1, characterized in that: The radian of the positioning arc plate (3) matches the outer circumferential surface of the drill pipe body.

4. The rod body tail anti-throwing and anti-eccentric component in the drill pipe turning process according to claim 1, characterized in that: A plurality of rotating rollers (6) are evenly arranged on the inner arc surface of the positioning arc plate (3). After the rotating rollers (6) are embedded in the positioning arc plate (3), a rolling surface is formed on the surface of the inner arc surface of the positioning arc plate (3).

5. The rod body tail anti-throw and anti-eccentric component in the drill pipe turning process according to claim 4, characterized in that: A plurality of inner embedding grooves (31) for assembling the rotating rollers (6) are formed on the inner arc surface of the positioning arc plate (3). Shaft holes are formed at both ends of the inner embedding groove (31). A rotating shaft (61) adapted to the shaft holes is arranged at the center of both ends of the rotating roller (6).

6. The rod body tail anti-throw and anti-eccentric component in the drill pipe turning process according to claim 1, characterized in that: A reinforcing sleeve (7) integrally connected with the connecting flange (2) is sleeved on the circumferential end of the guiding sleeve (1). A flange ring (8) for integrally fixing with the connecting flange (2) is arranged at the end of the reinforcing sleeve (7).

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