CN215256078U - Shock absorber and down-the-hole drill - Google Patents

Abstract

The utility model relates to a shock absorber, which is characterized by comprising an outer cylinder, wherein one end of the outer cylinder is connected with a drill rod in a screw assembly way; and a positioning sleeve matched with the inner wall of the outer cylinder; the joint is connected with the other end of the positioning sleeve; the drill rod clamping sleeve is arranged between the joint and the inner wall of the outer cylinder; and a damping assembly is arranged between the flange of the positioning sleeve and the boss inside the outer cylinder, and the brazing sleeve can rotate around the axis of the vent hole inside the joint and slide along the axis of the vent hole. The utility model relates to a down-the-hole drill has used foretell bumper shock absorber, and the drilling rod and the unit head on bumper shock absorber and the down-the-hole drill are connected. The application provides a shock absorber and down-the-hole drill can effectively slow down the reverse impact force that is transmitted to the unit head by the drilling rod, prolongs the life of unit head.

Description

Shock absorber and down-the-hole drill

Technical Field

The utility model belongs to the technical field of the technique of rig annex and specifically relates to a bumper shock absorber and down-the-hole drill.

Background

The drilling machine is widely used for drilling of prospecting, railways, roads, bridges, water conservancy and hydropower, tunnels, wells, anchor rods, small-caliber diamond core wire coring drilling, industrial and civil construction, engineering geological exploration, ground source hot drilling, coal bed gas drilling, outburst prevention drilling machines and the like.

The drilling machine is a construction machine suitable for hole forming operation in engineering, is mainly suitable for the construction of various blast hole drilling operations such as sandy soil, cohesive soil and the like, is widely applied to the construction of various foundation foundations, and structurally comprises a machine body, a mast, a power head, a drill rod and a drill bit. The power head is arranged on the mast, the drill rod is connected with the power head, when the cutting drilling machine works, the drill rod is repeatedly hoisted and lowered through the hoisting device, when the drill rod is lowered, the drill rod causes large impact on the power head due to high speed, the power head is a key part of the cutting drilling machine, the power head frequently bears reverse impact, internal elements are worn prematurely, the performance of the power head is reduced, the performance of the power head directly influences the performance of the cutting drilling machine, and therefore, the shock absorption device of the power head is needed to be arranged to reduce the impact of the drill rod on the power head.

SUMMERY OF THE UTILITY MODEL

Solve the technical problem, an object of the utility model is to provide a shock absorber for reduce the impact to the unit head. Another object of the utility model is to provide a down-the-hole drill has used foretell bumper shock absorber, can reach above-mentioned technological effect equally.

The technical scheme of the utility model as follows:

a shock absorber comprises an outer cylinder, wherein one end of the outer cylinder is connected with a drill rod in a threaded mode;

and a positioning sleeve matched with the inner wall of the outer cylinder;

the joint is connected with the other end of the positioning sleeve;

the drill rod clamping sleeve is arranged between the joint and the inner wall of the outer cylinder;

and a damping assembly is arranged between the flange of the positioning sleeve and the boss inside the outer cylinder, and a sliding structure is arranged between the outer cylinder and the drill clamping sleeve, so that the drill clamping sleeve can rotate around the axis of the vent hole inside the joint and slide along the axis of the vent hole.

Preferably, the shock absorption assembly comprises at least two cushion pads, and the two cushion pads are arranged in an axial direction of the positioning sleeve.

Preferably, a snap ring is sleeved on the outer wall of one end, close to the positioning sleeve, of the joint, and one end of the snap ring abuts against the end part of the brazing sleeve.

Preferably, a sealing structure is arranged inside the shock absorber and used for sealing gaps among the joint, the brazing sleeve, the locating sleeve and the outer cylinder.

Preferably, the sealing arrangement comprises a first sealing ring between the locating sleeve and the fitting.

Preferably, the sealing arrangement comprises a second sealing ring between the bayonet sleeve and the outer cylinder.

Preferably, the sealing arrangement comprises a third sealing ring between the bayonet sleeve and the joint.

Preferably, the number of the third sealing rings is at least two, and the third sealing rings are arranged in line along the axial direction of the joint.

The down-the-hole drill applies the shock absorber, and the shock absorber is connected with a drill rod and a power head on the down-the-hole drill.

The utility model provides a shock absorber, including the outer cylinder, the one end and the drilling rod spiral shell dress of outer cylinder are connected to and with outer cylinder inner wall matched with position sleeve, the joint of being connected with the position sleeve other end locates the card drill sleeve between the inner wall of joint, outer cylinder, be equipped with shock-absorbing assembly between the flange of position sleeve and the inside bellying of outer cylinder, the card drill sleeve can rotate around the inside air vent axis of joint, and slide along the air vent axis. When the down-the-hole drill works, the impacter can be subjected to reverse impact force of rocks, the reverse impact force is transmitted to the power head, one end of the shock absorber provided by the application is connected with the drill rod, the other end of the shock absorber is connected with the power head, and the shock absorber mutually impacts through sliding among the drill rod clamping sleeve, the positioning sleeve, the outer cylinder and the joint. Therefore, the shock absorber provided by the application can reduce the impact on the power head.

The utility model provides a down-the-hole drill has used foretell bumper shock absorber, and drilling rod and unit head on bumper shock absorber and the down-the-hole drill are connected.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a structural sectional view of a shock absorber according to an embodiment of the present invention.

Reference numbers in the drawings illustrate: 1. an outer cylinder; 2. a positioning sleeve; 3. a joint; 4. a drill rod clamping sleeve; 5. a cushion pad; 6. a snap ring; 7. a first seal ring; 8. a second seal ring; 9. and a third sealing ring.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships, and are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Please show as fig. 1, the utility model provides a shock absorber, including outer cylinder 1, the one end and the drilling rod spiral shell dress of outer cylinder 1 are connected to and with outer cylinder 1 inner wall matched with position sleeve 2, the joint 3 of being connected with the 2 other ends of position sleeve, locate joint 3, the drill collar 4 between the inner wall of outer cylinder 1, be equipped with damper between the flange of position sleeve 2 and the inside bellying of outer cylinder 1, drill collar 4 can rotate around the inside air vent axis of joint 3, and slide along the air vent axis. When the down-the-hole drill works, the impacter can be subjected to reverse impact force of rocks, the reverse impact force is transmitted to the power head, one end of the shock absorber provided by the application is connected with the drill rod, the other end of the shock absorber is connected with the power head, the shock absorber slides between the drill rod clamping sleeve 4 and the positioning sleeve 2 and between the outer cylinder 1 and the joint 3 and impacts with each other, the shock absorption assembly absorbs impact kinetic energy in the process, the vibration energy is continuously consumed, the reverse impact force transmitted to the power head by the drill rod is effectively reduced, and the service life of the power head is prolonged. Therefore, the shock absorber provided by the application can reduce the impact on the power head.

Specifically, the shock absorption assembly comprises at least two buffer pads 5, and the two buffer pads 5 are arranged in an axial direction of the positioning sleeve 2. The buffer pad 5 can be made of rubber, so that the service life of the damping component can be prolonged. On the other hand, the number of the cushion pads 5 is at least two, so that one cushion pad 5 can be prevented from failing, and the other cushion pads 5 can also play a role in buffering and damping.

The utility model provides an in the embodiment, the cover is equipped with snap ring 6 on the outer wall that connects 3 one end that is close to position sleeve 2, and the one end of snap ring 6 is supported and is leaned on the tip in bore hole clamp cover 4. The positioning sleeve 2 has the functions of fixing the cushion pad 5 on one hand and enabling the joint 3 and the brazing sleeve 4 not to deflect in the relative sliding process on the other hand, so that overlarge local stress is avoided. The snap ring 6 is used to prevent the position sleeve 2 from falling off from the shock absorber.

Preferably, the inside of the shock absorber is provided with a sealing structure for sealing the gap between the joint 3, the brazing sleeve 4, the locating sleeve 2 and the outer cylinder 1. Set up seal structure in the bumper shock absorber, in order to improve the leakproofness in the bumper shock absorber, can avoid foreign matter such as rock sediment to get into the bumper shock absorber.

In particular, the sealing structure comprises a first sealing ring 7 located between the positioning sleeve 2 and the joint 3. The first sealing ring 7 is used for sealing the gap between the locating sleeve 2 and the joint 3. The first sealing ring 7 is preferably an O-shaped sealing ring, a Y-shaped sealing ring, a D-shaped sealing ring and the like can be selected, the structural type of the specific sealing ring is not particularly limited, and the requirement on sealing performance can be met.

Further, the sealing structure comprises a second sealing ring 8 between the bayonet sleeve 4 and the outer cylinder 1. The second sealing ring 8 is used for sealing a gap between the drill rod clamping sleeve 4 and the outer cylinder 1, the O-shaped sealing ring is preferably selected as the second sealing ring 8, a Y-shaped sealing ring, a D-shaped sealing ring and the like can be selected, the structural type of the specific sealing ring is not particularly limited, and the requirement on sealing performance can be met.

Wherein the sealing structure comprises a third sealing ring 9 between the drill collar 4 and the joint 3. The third sealing ring 9 is used for sealing a gap between the drill rod clamping sleeve 4 and the joint 3, the O-shaped sealing ring is preferably selected as the third sealing ring 9, a Y-shaped sealing ring, a D-shaped sealing ring and the like can be selected, the structural type of the specific sealing ring is not particularly limited, and the requirement on sealing performance can be met.

Further, the number of the third sealing rings 9 can be at least two, the third sealing rings are arranged in the axial direction of the joint 3, when one of the third sealing rings 9 fails, the other third sealing ring 9 can still work, and the reliability of the sealing structure is improved.

Preferably, the first sealing ring 7, the second sealing ring 8 and the third sealing ring 9 are arranged at the same time, and two third sealing rings 9 are arranged, so that the sealing performance of the sealing structure is optimal.

The utility model provides a down-the-hole drill has used foretell bumper shock absorber, and drilling rod and unit head connection on this bumper shock absorber and the down-the-hole drill.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts in the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. The shock absorber is characterized by comprising an outer cylinder (1), wherein one end of the outer cylinder (1) is in threaded connection with a drill rod;

and a positioning sleeve (2) matched with the inner wall of the outer cylinder (1);

the joint (3) is connected with the other end of the positioning sleeve (2);

the brazing sleeve (4) is arranged between the joint (3) and the inner wall of the outer cylinder (1);

a damping component is arranged between the flange of the positioning sleeve (2) and the convex part inside the outer cylinder (1), and the drill rod clamping sleeve (4) can rotate around the axis of the vent hole inside the joint (3) and slide along the axis of the vent hole.

2. The shock absorber according to claim 1, wherein the shock absorbing assembly comprises at least two cushion pads (5), and the two cushion pads (5) are arranged in an axial direction of the positioning sleeve (2).

3. The shock absorber as claimed in claim 2, wherein a snap ring (6) is sleeved on the outer wall of the joint (3) close to one end of the locating sleeve (2), and one end of the snap ring (6) abuts against the end of the brazing sleeve (4).

4. The shock absorber according to claim 3, characterized in that a sealing structure is provided inside the shock absorber for sealing the gap between the joint (3), the bayonet sleeve (4), the locating sleeve (2) and the outer cylinder (1).

5. Shock absorber according to claim 4, wherein said sealing structure comprises a first sealing ring (7) between said locating sleeve (2) and said joint (3).

6. Shock absorber according to claim 5, wherein said sealing structure comprises a second sealing ring (8) between said bayonet sleeve (4) and said outer cylinder (1).

7. Shock absorber according to claim 6, wherein said sealing structure comprises a third sealing ring (9) between said bayonet sleeve (4) and said joint (3).

8. Shock absorber according to claim 7, wherein said third sealing rings (9) are provided in at least two, arranged in line along the axial direction of said joint (3).

9. A down-the-hole drill, characterized in that a shock absorber according to any one of claims 1 to 8 is applied, said shock absorber being connected to a drill rod and a power head on said down-the-hole drill.

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