阅读说明：本技术 一种勘探用钻杆减振装置 (Drilling rod vibration damper for exploration ) 是由 陶勇 于 2020-07-06 设计创作，主要内容包括：本发明提供了一种勘探用钻杆减振装置,减振装置包括套杆和套筒；套筒内部设置有第一空腔和第二空腔,第一空腔和第二空腔之间通过第一油孔连通,第一空腔和第二空腔之间还通过第二油孔连通,套筒的下端与钻杆连接；套杆上端与勘探用钻杆减振装置本体连接,套杆下端插入套筒的第一空腔形成柱塞结构,套杆还通过螺杆与套筒连接在一起,套杆能够在套筒内上下活动,套杆内部还设置有油腔,套杆外壁还设置有油槽,油腔与油槽连通,当套杆下端插入套筒的第一空腔后,油槽与第二油孔连通。本发明通过油液在通道中流动产生的阻力来减振,减振结构经久耐用,减振效果好。(The invention provides a drill rod vibration damping device for exploration, which comprises a sleeve rod and a sleeve; a first cavity and a second cavity are arranged in the sleeve, the first cavity is communicated with the second cavity through a first oil hole, the first cavity is communicated with the second cavity through a second oil hole, and the lower end of the sleeve is connected with the drill rod; the upper end of the loop bar is connected with the drilling rod vibration damping device for exploration, the lower end of the loop bar is inserted into the first cavity of the sleeve to form a plunger structure, the loop bar is connected with the sleeve through a screw rod, the loop bar can move up and down in the sleeve, an oil cavity is further arranged inside the loop bar, an oil groove is further formed in the outer wall of the loop bar, the oil cavity is communicated with the oil groove, and after the lower end of the loop bar is inserted into the first cavity of the sleeve, the oil groove is communicated with the second oil hole. The invention reduces vibration by the resistance generated by the oil flowing in the channel, and the vibration reduction structure is durable and has good vibration reduction effect.)

1. A drill rod vibration damper for exploration is characterized by comprising a loop bar (1), a sleeve (2) and a conveying pipe (19),

a first cavity (21) and a second cavity (22) are arranged in the sleeve (2), the first cavity (21) is communicated with the second cavity (22) through a first oil hole (23), the first cavity (21) is communicated with the second cavity (22) through a second oil hole (24), and the lower end of the sleeve (2) is connected with a drill rod (9);

the lower end of the loop bar (1) is inserted into a first cavity (21) of the sleeve (2) to form a plunger structure, the loop bar (1) is further connected with the sleeve (2) through a screw (3), the loop bar (1) can move up and down in the sleeve (2), an oil cavity (11) is further formed in the loop bar (1), an oil groove (12) is further formed in the outer wall of the loop bar (1), the oil cavity (11) is communicated with the oil groove (12), and after the lower end of the loop bar (1) is inserted into the first cavity (21) of the sleeve (2), the oil groove (12) is communicated with the second oil hole (24);

conveyer pipe (19) set up inside loop bar (1) and sleeve (2), conveyer pipe (19) are used for carrying the drilling material in drilling rod (9) the upper end of loop bar (1), still be provided with the spline housing (18) of transmission moment of torsion between loop bar (1) and sleeve (2), spline housing (18) upper end is fixed loop bar (1), spline housing (18) lower extreme can be from top to bottom movably with sleeve (2) key-type connection.

2. The device for damping drill rod for exploration, as set forth in claim 1, characterized in that the second oil hole (24) is further provided with a first oil hole (26), and the first oil hole (26) is provided with a first sealing plug (7).

3. The device for damping drill rod for exploration, as set forth in claim 2, characterized in that the second oil hole (24) is further provided with a second oil filler hole (25), and the second oil filler hole (25) is provided with a second sealing plug (6).

4. A vibration damping device for an exploration drill rod according to claim 1, 2 or 3, characterized in that the bottom of the first cavity (21) is provided with a rubber ring (4) with an oil passage through hole in the middle.

5. An apparatus as claimed in claim 4, wherein a spring (5) is provided between the sleeve (1) and the sleeve (2).

6. The vibration damper for the drill rod for exploration, as claimed in claim 1, wherein the sleeve rod (1) is provided with a shoulder (14), the shoulder (14) is provided with a screw through hole (15), the upper end surface of the sleeve (2) is provided with a threaded hole (27), and the screw (3) passes through the screw through hole (15) and is connected with the threaded hole (27).

7. An apparatus as claimed in claim 1, wherein the first cavity (21) and the second cavity (22) contain hydraulic fluid (8).

8. A device as claimed in claim 1, characterised in that sealing rings (17) are provided between the delivery tube (19) and the casing rod (1) or casing (2).

Technical Field

The invention relates to the technical field of drilling equipment, in particular to a drilling rod vibration damper for exploration.

Background

The engine is arranged on the drilling machine and provides power for the drill rod, and during work, vibration of the engine can be transmitted to the drill rod to cause vibration of the drill rod, so that the service life of the drill rod and the drill bit is influenced, and the working stability of the drill rod and the drill bit is influenced. The existing drilling rod vibration damping device for exploration is used for damping vibration by arranging a rubber vibration damping pad between a drilling rod and a drilling machine body, but the vibration damping effect is not ideal, and the rubber vibration damping pad is easy to age and damage in use, so that the vibration damping effect is further reduced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the drilling rod vibration damping device for exploration, which is used for damping the vibration of the drilling rod by means of the flow resistance of hydraulic oil, and solves the problem of poor vibration damping effect of the drilling rod in the prior art.

According to the embodiment of the invention, the drill rod vibration damper for exploration comprises a sleeve rod, a sleeve and a conveying pipe,

a first cavity and a second cavity are arranged in the sleeve, the first cavity is communicated with the second cavity through a first oil hole, the first cavity is communicated with the second cavity through a second oil hole, and the lower end of the sleeve is connected with a drill rod;

the lower end of the loop bar is inserted into the first cavity of the sleeve to form a plunger structure, the loop bar is further connected with the sleeve through a screw, the loop bar can move up and down in the sleeve, an oil cavity is further arranged in the loop bar, an oil groove is further arranged on the outer wall of the loop bar, the oil cavity is communicated with the oil groove, and after the lower end of the loop bar is inserted into the first cavity of the sleeve, the oil groove is communicated with the second oil hole;

the conveying pipe is arranged inside the sleeve rod and the sleeve, the conveying pipe is used for conveying drilling objects in the drill rod to the upper end of the sleeve rod, a spline sleeve for transmitting torque is further arranged between the sleeve rod and the sleeve, the upper end of the spline sleeve is fixed on the sleeve rod, and the lower end of the spline sleeve can be movably connected with the sleeve key.

The technical principle of the invention is as follows:

the exciting force of the engine causes the loop bar to vibrate up and down, after oil is put into the first cavity and the second cavity, when the loop bar moves downwards, the lower end of the loop bar is downward in the first cavity, so that the oil in the first cavity flows into the second cavity through the first oil hole, the oil in the second cavity flows into the oil groove through the second oil hole, the oil flow channel is small, and the resistance in the flow is large; similarly, when the loop bar upward movement, the loop bar lower extreme upwards makes first cavity grow at first cavity, and fluid in the second cavity flows into first cavity through first oilhole, and fluid in oil groove or the oil pocket flows into the second cavity through the second oilhole, and because the flow path of fluid is little, the resistance is very big in the flow, and the flow resistance of consequently fluid has played the effect of shaking.

Compared with the prior art, the invention has the following beneficial effects:

the vibration damping structure is durable and has good vibration damping effect. Damping is achieved through resistance generated by flowing of oil in the channel, and due to the fact that the number of the parts easy to wear is small, the damping device is durable, meanwhile, flowing resistance of the oil increases along with pressure, good blocking effect can be achieved on vibration of various frequencies, the damping stroke is long, and the damping effect is good.

Preferably, the second oil hole is further provided with a first oil filling hole, and the first oil filling hole is provided with a first sealing plug.

The oil can be injected or discharged into the interior without disassembling the vibration damper, and the use is more convenient.

Further, a second oil hole is further formed in the second oil hole, and a second sealing plug is arranged on the second oil hole.

The oil can be injected or discharged into the interior without disassembling the vibration damper, and the use is more convenient.

Preferably, the bottom of the first cavity is provided with a rubber ring with an oil passage through hole in the middle.

When the rubber ring is contacted with the end part of the loop bar, the rubber ring can also absorb partial vibration, thereby further improving the vibration reduction effect.

Preferably, a spring is further disposed between the loop bar and the sleeve.

The spring plays a role in vibration reduction on one hand, and the loop bar and the sleeve are propped open in the opposite direction on the other hand, so that the screw cannot shake in the sleeve after the loop bar and the sleeve are connected together by the screw.

Generally, a convex shoulder is arranged on the loop bar, a screw rod through hole is arranged on the convex shoulder, a threaded hole is arranged on the upper end face of the sleeve, and the screw rod penetrates through the screw rod through hole to be connected with the threaded hole.

Generally, the first cavity and the second cavity are filled with hydraulic oil.

Preferably, a plurality of sealing rings are arranged between the conveying pipe and the sleeve rod or the sleeve.

Drawings

Fig. 1 is a schematic cross-sectional view of a vibration damping device according to an embodiment of the present invention.

Fig. 2 is a schematic sectional structure view of a loop bar according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view of a sleeve according to an embodiment of the present invention.

Fig. 4 is an enlarged view of a portion a in fig. 1.

Fig. 5 is an enlarged view of fig. 1 at B.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the embodiments.

Referring to fig. 1, the embodiment of the invention provides a drill rod damping device for exploration, the damping device comprises a sleeve rod 1 and a sleeve 2, the lower end of the sleeve 2 is connected with a drill rod 9 through a connecting male thread, and the upper end of the sleeve rod 1 is connected with a drilling machine body. The conveyer pipe 19 sets up inside loop bar 1 and sleeve 2, conveyer pipe 19 is used for carrying the upper end of loop bar 1 with the drilling material in the drilling rod 9, still be provided with the spline housing 18 of transmission moment of torsion between loop bar 1 and sleeve 2, spline housing 18 upper end is fixed on loop bar 1, be equipped with the slot in the spline housing 18 lower extreme, sleeve 2 upper end surface is provided with the gear shaping, the gear shaping of sleeve 2 inserts in the slot of spline housing 18, also can set up the gear shaping into the key, form spline housing 18 can be from top to bottom movably and sleeve 2 between the key-type connection. 5 sealing rings 17 are also arranged, and two sealing rings are arranged between the conveying pipe 19 and the sleeve rod 1 to prevent the hydraulic oil 8 in the oil cavity 11 from leaking along the conveying pipe 19; two sealing rings are arranged between the delivery pipe 19 and the sleeve 2, which prevent the hydraulic oil 8 from flowing along the delivery pipe 19 between the first cavity 21 and the second cavity 22, and the hydraulic oil from leaking along the delivery pipe 19 from the second cavity 22 to the drill rod 9, respectively; a sealing ring is also arranged between the loop bar 1 and the sleeve 2 to prevent the hydraulic oil 8 from leaking between the loop bar 1 and the sleeve 2.

As shown in fig. 3, a first cavity 21 and a second cavity 22 are provided inside the sleeve 2, the first cavity 21 and the second cavity 22 communicate with each other through a first oil hole 23, and the first cavity 21 and the second cavity 22 communicate with each other through a second oil hole 24. As shown in fig. 1, the bottom of the first cavity 21 is provided with a rubber ring 4 with an oil passage through hole in the middle, and hydraulic oil 8 is filled in the first cavity 21 and the second cavity 22.

As shown in fig. 1-2, the lower end of the loop bar 1 is inserted into the first cavity 21 of the sleeve 2 to form a plunger structure, the loop bar 1 is provided with a convex shoulder 14, the convex shoulder 14 is provided with a screw rod through hole 15, the upper end surface of the sleeve 2 is provided with a threaded hole 27, and the screw rod 3 passes through the screw rod through hole 15 and is connected with the threaded hole 27; the loop bar 1 can move up and down in the sleeve 2, and loop bar 1 is inside still to be provided with oil pocket 11, and loop bar 1 outer wall still is provided with oil groove 12, and oil pocket 11 and oil groove 12 are through third oil duct 13 intercommunication, and after the first cavity 21 of sleeve 2 was inserted to loop bar 1 lower extreme, oil groove 12 and second oilhole 24 communicate. The oil groove 12 may allow the oil groove 12 to always communicate with the second oil hole 24 when the lever 1 moves up and down. Still be provided with spring 5 between loop bar 1 and the sleeve 2, the spring plays the damping effect on the one hand, and on the other hand still struts loop bar and sleeve to opposite direction for the screw rod is in the same place back with loop bar and sleeve, alleviates rocking of screw rod in the sleeve.

As shown in fig. 1, 4 and 5, the second oil hole 24 is also provided with a first oil hole 26, and the first oil hole 26 is provided with a first sealing plug 7; the second oil hole 24 is also provided with a second oil filling hole 25, and the second oil filling hole 25 is provided with a second sealing plug 6.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.