Roller bit with annular elastic floating sleeve

Abstract

The utility model discloses a roller bit with an annular elastic floating sleeve, and relates to the technical field of drilling tools. The upper side of the connecting seat is provided with a mounting seat, the side surface of the mounting seat is provided with three groups of connecting cavities, the side surface of a round bearing column of the mounting seat is movably sleeved with a drill bit block, the side surface of the mounting seat is provided with a wear-resistant component capable of movably reducing friction, and the side surface of the mounting seat is provided with an auxiliary component capable of limiting the drill bit block. According to the utility model, the rotary friction to the drill bit block is ensured by matching with slight displacement, the friction heating value of the drill bit block is reduced, the abrasion degree of the balls is also reduced, and the service life is prolonged; and the further arranged auxiliary assembly can further restrain the drill bit block for limiting, restrain and guide the drill bit block when the drill bit block rotates, and further reduce the probability that the drill bit block falls off.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling tools, in particular to a roller drill bit with an annular elastic floating sleeve. Background Art

[0002] In oil drilling production, the main drilling tool is the roller drill bit, and its service life plays a vital role in construction. There are currently many reasons for the short service life of the roller drill bit. The most important of these is that the palm bearing generates a lot of heat and suffers severe wear, which leads to early failure of the drill bit. Existing methods generally use internal balls to reduce friction, but when the roller drill bit rotates to drill, it may move slightly laterally due to lateral pressure. The movement will cause the internal balls to accelerate friction, shortening its service life. Furthermore, the existing roller drill bit is limited by the internal balls during use, which makes the roller drill bit more likely to detach. For this reason, a roller drill bit with an annular elastic floating sleeve is proposed. Utility Model Content

[0003] The purpose of the utility model is to solve the problem of a roller drill bit with an annular elastic floating sleeve. The utility model provides a roller drill bit with an annular elastic floating sleeve.

[0004] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0005] The roller drill bit with an annular elastic floating sleeve includes a connecting seat, a mounting seat is provided on the upper side of the connecting seat, three sets of connecting cavities are opened on the side of the mounting seat, a drill block is movably sleeved on the side of the circular bearing column of the mounting seat, a wear-resistant component that can be movable to reduce friction is provided on the side of the mounting seat, and an auxiliary component that can limit the drill block is provided on the side of the mounting seat;

[0006] The wear-resistant component includes a mounting groove, a mounting block is arranged inside the mounting groove, a ball is arranged on the side of the mounting block, and a support spring is arranged on the side of the mounting block;

[0007] The auxiliary component comprises a slot, a restraining block is arranged inside the slot, a restraining rod is arranged on the side of the restraining block, and a movable limiting block is arranged on the side of the restraining rod.

[0008] Furthermore, the wear-resistant component includes a mounting groove opened on the side of the circular bearing column of the mounting seat, the mounting block is movably installed inside the mounting groove, the ball is movably installed on the side of the mounting block, a mounting cavity is opened on the side of the three-claw seat of the mounting seat, a connecting groove is opened on the inner wall of the mounting cavity, a movable block is movably installed inside the mounting cavity, a support spring is fixedly connected between the movable block and the side of the mounting block, an adjusting block is installed on the internal thread of the mounting cavity, and a blocking block is movably installed inside the mounting cavity.

[0009] Furthermore, the ball is fitted on the inner side of the drill block, the support spring is arranged on the inner side of the connecting groove, and the movable block is movably sleeved on the side of the adjusting block.

[0010] Furthermore, the auxiliary component includes a slot opened on the inner side of the drill block, the constraint block is movably installed inside the slot, the inner wall of the installation cavity is provided with a matching slot, the side of the adjustment block is provided with a through slot, and the constraint rod is threadedly installed inside the through slot.

[0011] Furthermore, the auxiliary component also includes a limit groove opened on the inner side of the drill block, a movable groove is opened on the inner wall of the installation cavity, the limit block is movably installed inside the movable groove, and a support block is fixedly installed between the side of the limit block and the inner wall of the movable groove.

[0012] Furthermore, the auxiliary component also includes a limit groove opened on the inner side of the drill block, a movable groove is opened on the inner wall of the installation cavity, the limit block is movably installed inside the movable groove, and a support block is fixedly installed between the side of the limit block and the inner wall of the movable groove.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model can reduce the friction of the drill block when it rotates by setting a wear-resistant component. The synchronously set wear-resistant component cooperates to perform a slight displacement when the drill block is forced to move laterally to ensure the rotational friction of the drill block, thereby reducing the frictional heat generated by the drill block and also reducing the wear degree of the ball, thereby extending the service life. The auxiliary component can be set to perform a limit constraint operation after the drill block is installed. The further set auxiliary component can further constrain the drill block to limit the drill block, constrain and guide the drill block when it rotates, and further reduce the chance of the drill block falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a partial structural diagram of the mounting base of the utility model;

[0017] Figure 3 This utility model Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 4 This utility model Figure 3 Schematic diagram of the enlarged structure at B in the middle;

[0019] Figure 5 It is a schematic diagram of the partial explosion structure of the utility model.

[0020] Figure markings: 1. Connecting seat; 2. Mounting seat; 3. Connecting cavity; 4. Drill block; 5. Wear-resistant component; 501. Mounting groove; 502. Mounting block; 503. Ball; 504. Mounting cavity; 505. Connecting groove; 506. Movable block; 507. Support spring; 508. Adjusting block; 509. Blocking block; 6. Auxiliary component; 601. Slot; 602. Constraint block; 603. Matching groove; 604. Through groove; 605. Constraint rod; 606. Limiting groove; 607. Movable groove; 608. Limiting block; 609. Support block. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0025] like Figures 1 to 2As shown, a roller drill bit with an annular elastic floating sleeve includes a connecting seat 1, which is a conical seat with a cylindrical groove on the side. A mounting seat 2 is provided on the upper side of the connecting seat 1. The mounting seat 2 is composed of a three-claw seat and three groups of circular bearing columns. Three groups of connecting cavities 3 are equidistantly provided on the side of the mounting seat 2, and the connecting cavity 3 passes through the mounting seat 2 to the inside of the connecting seat 1. The connecting cavity 3 is a circular groove. A drill block 4 is movably sleeved on the side of the circular bearing column of the mounting seat 2. The drill block 4 is a conical drill block 4 with a hollow side and column nails are equidistantly provided on the side. A wear-resistant component 5 that can movably reduce friction is provided on the side of the mounting seat 2, and an auxiliary component 6 that can limit the drill block 4 is provided on the side of the mounting seat 2.

[0026] Specifically, the wear-resistant component 5 provided can constrain the drill block 4, and when the drill block 4 rotates, it can be in the shape of a bearing sleeve through the ball 503 to reduce the rotational friction. The wear-resistant component 5 provided can also provide elastic support laterally when the drill block 4 rotates under force, and cooperate with the lateral displacement of the drill block 4 to reduce the friction of the ball 503. The auxiliary component 6 provided can play a limiting role when the drill block 4 rotates, thereby reducing the chance of the drill block 4 falling during drilling.

[0027] like Figure 2-Figure 5 As shown, the wear-resistant component 5 includes a mounting groove 501 provided on the side of the circular bearing column of the mounting seat 2. The mounting groove 501 is a circular ring groove. A mounting block 502 is movably installed inside the mounting groove 501. The mounting block 502 is a circular ring block with an arc-shaped side. Balls 503 are movably installed in a circular array on the side of the mounting block 502 at equal intervals. The balls 503 fit the inner side of the drill block 4. The balls 503 are round balls. A mounting cavity 504 is provided on the side of the three-claw seat of the mounting seat 2 at a position corresponding to the mounting block 502. The mounting cavity 504 is a cylindrical threaded groove with a cross-shaped cross section. A through-mounted groove is provided on the inner wall of the mounting cavity 504 at a position corresponding to the mounting block 502 at a circular array at equal intervals. The connecting groove 505 to the mounting groove 501 is a cylindrical groove. A movable block 506 is movably installed inside the mounting cavity 504. The movable block 506 is a circular ring block. Support springs 507 are fixedly connected in a circular array equidistantly between the movable block 506 and the side of the mounting block 502. The support springs 507 are arranged in a position inside the connecting groove 505. An adjustment block 508 is threadedly installed inside the mounting cavity 504, and the movable block 506 is movably sleeved on the side of the adjustment block 508. The adjustment block 508 is composed of a circular threaded column with a circular groove on the side and a regular hexagonal block. A blocking block 509 is movably installed inside the mounting cavity 504. The blocking block 509 is a cylindrical block.

[0028] The screw thread 508 is used to move the movable block 506 to slide inside the installation cavity 504 through the tool thread. The movable block 506 pulls the support spring 507 to pull the installation block 502 to one side of the installation groove 501, so that the drill block 4 is sleeved on the side position of the mounting seat 2, and the ball 503 is installed in the side position of the installation block 502 through the mounting hole. Then, the screw movement adjustment block 508 drives the movable block 506 to slide inside the installation cavity 504 close to the installation block 502, completing the installation of the drill block 4. When the drill block 4 is used to rotate, the provided installation block 502 reduces its rotational friction. At the same time, the installation block 502 is elastically supported by the support spring 507, and the installation block 502 can move slightly laterally inside the installation groove 501, so that when the drill block 4 is forced to move laterally, the installation block 502 can also move laterally accordingly, keeping the ball 503 perfectly fitted in the inner groove position of the drill block 4, reducing the wear of the ball 503 and increasing its service life.

[0029] like Figure 3 - Figure 5 As shown, the auxiliary component 6 includes a slot 601 provided on the inner side of the drill block 4. The slot 601 is a cylindrical slot with a convex cross-section. A restraining block 602 is movably installed inside the slot 601. The restraining block 602 is a convex round block with a cylindrical threaded groove on the side. A matching slot 603 is provided on the inner wall of the mounting cavity 504 corresponding to the slot 601 and passing through the mounting seat 2. The matching slot 603 is a cylindrical slot. A through slot 604 is provided on the side of the adjusting block 508 and passes through it. The through slot 604 is a cylindrical threaded groove. A restraining rod 605 is installed on the internal thread of the through slot 604 and the restraining rod 605 extends to the matching slot 60 3 internal position, the restraining rod 605 is a cylindrical threaded rod with a cross-shaped groove on the side, a limiting groove 606 is provided on the inner side of the drill block 4 at the position corresponding to the mounting cavity 504, the limiting groove 606 is a circular groove, and movable grooves 607 penetrating the mounting seat 2 are equidistantly provided in an array on the inner wall of the mounting cavity 504. The movable groove 607 is an "L"-shaped groove, and a limiting block 608 is movably installed inside the movable groove 607. The limiting block 608 is an "L"-shaped block with one side being inclined. A supporting block 609 is fixedly installed between the side of the limiting block 608 and the inner wall of the movable groove 607. The supporting block 609 is a "W"-shaped block made of spring steel;

[0030] Specifically, when the movable block 506 slides close to the mounting block 502 through the set limit block 608, the movable block 506 is squeezed on the side position of the limit block 608 to squeeze the support block 609 to deform and extend to the internal position of the limit groove 606, thereby limiting the drill block 4. At the same time, the set constraint rod 605 is moved in the internal thread of the through groove 604 through the tool, and the constraint rod 605 is moved to the slot 601 and squeezed on the side position of the constraint block 602, and continues to rotate the thread to be threadedly connected to the constraint block 602, further limiting the drill block 4 without interfering with the rotation operation of the drill block 4, reducing the probability of the drill block 4 detaching.

[0031] In summary: the wear-resistant component 5 set up can reduce the friction when the drill block 4 rotates. The wear-resistant component 5 set up synchronously cooperates to perform a slight displacement when the drill block 4 is forced to move laterally to ensure the rotational friction of the drill block 4, thereby reducing the frictional heat generated by the drill block 4 and also reducing the wear degree of the ball 503 to extend the service life. The auxiliary component 6 set up can perform a limit constraint operation after the drill block 4 is installed. The further set auxiliary component 6 can further constrain the drill block 4 to limit its position, constrain and guide the drill block 4 when it rotates, and further reduce the chance of the drill block 4 falling.

[0032] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A roller drill bit with an annular elastic floating sleeve, comprising a connecting seat (1), a mounting seat (2) provided on the upper side of the connecting seat (1), three groups of connecting cavities (3) provided on the side of the mounting seat (2), a drill block (4) movably sleeved on the side of the circular bearing column of the mounting seat (2), a wear-resistant component (5) that can movably reduce friction provided on the side of the mounting seat (2), and an auxiliary component (6) that can limit the drill block (4) provided on the side of the mounting seat (2); Its characteristics are: The wear-resistant component (5) comprises a mounting groove (501), a mounting block (502) is provided inside the mounting groove (501), a ball (503) is provided on the side of the mounting block (502), and a support spring (507) is provided on the side of the mounting block (502); The auxiliary component (6) comprises a slot (601), a restraining block (602) is provided inside the slot (601), a restraining rod (605) is provided on the side of the restraining block (602), and a movable limiting block (608) is provided on the side of the restraining rod (605).

2. The roller drill bit with an annular elastic floating sleeve according to claim 1, characterized in that: The wear-resistant component (5) comprises a mounting groove (501) provided on the side of the circular bearing column of the mounting seat (2); a mounting block (502) is movably installed inside the mounting groove (501); a ball (503) is movably installed on the side of the mounting block (502); a mounting cavity (504) is provided on the side of the three-claw seat of the mounting seat (2); a connecting groove (505) is provided on the inner wall of the mounting cavity (504); a movable block (506) is movably installed inside the mounting cavity (504); a support spring (507) is fixedly connected between the movable block (506) and the side of the mounting block (502); an adjusting block (508) is installed on the internal thread of the mounting cavity (504); and a blocking block (509) is movably installed inside the mounting cavity (504).

3. The roller cone drill bit with an annular elastic floating sleeve according to claim 2, characterized in that: The ball (503) is fitted on the inner side of the drill block (4), the support spring (507) is arranged inside the connecting groove (505), and the movable block (506) is movably sleeved on the side of the regulating block (508).

4. The roller cone drill bit with an annular elastic floating sleeve according to claim 3, characterized in that: The auxiliary component (6) includes a slot (601) provided on the inner side of the drill block (4), a restraining block (602) movably mounted inside the slot (601), a matching slot (603) provided on the inner wall of the mounting cavity (504), a through slot (604) provided on the side of the adjusting block (508), and a restraining rod (605) threadedly mounted inside the through slot (604).

5. The roller drill bit with an annular elastic floating sleeve according to claim 4, characterized in that: The auxiliary component (6) further comprises a limiting groove (606) provided on the inner side of the drill block (4); a movable groove (607) is provided on the inner wall of the mounting cavity (504); a limiting block (608) is movably mounted inside the movable groove (607); and a supporting block (609) is fixedly mounted between the side surface of the limiting block (608) and the inner wall of the movable groove (607).

6. The roller cone drill bit with an annular elastic floating sleeve according to claim 5, characterized in that: The slot (601) is a cylindrical slot with a convex cross-section, the restraining block (602) is a convex round block with a cylindrical threaded groove on the side, the restraining rod (605) is a cylindrical threaded rod with a cross-shaped groove on the side, the limiting block (608) is an "L"-shaped block with an inclined surface on one side, and the supporting block (609) is a "W"-shaped block made of spring steel.

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