CN215720295U

CN215720295U - Self-lubricating transmission shaft assembly

Info

Publication number: CN215720295U
Application number: CN202122022659.5U
Authority: CN
Inventors: 张金江
Original assignee: Cangzhou Guangyuan Bofa Petroleum Machinery Co ltd
Current assignee: Cangzhou Guangyuan Bofa Petroleum Machinery Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-02-01
Anticipated expiration: 2031-08-26

Abstract

The utility model relates to the technical field of petroleum drilling, in particular to a self-lubricating transmission shaft assembly which is designed aiming at the drilling operation without lubricity, effectively solves the drilling operation of foam and air, reduces the abrasion and the underground accident of the transmission shaft assembly and improves the drilling efficiency; including last casing, go up the transmission shaft, down the casing, go up the quiet cover of TC, the quiet cover of lower TC and lower transmission shaft, it is connected with lower casing cooperation to go up the casing, it is located among casing and the lower casing to go up transmission shaft and last casing rotatable coupling, it sets up under and between the transmission shaft to go up the quiet cover of TC, the quiet cover of TC sets up in the transmission shaft is outside down to the quiet cover one end of TC inserts under to in the casing and with lower casing cooperation down, lower transmission shaft one end inserts supreme transmission shaft tail end and is connected with last transmission shaft cooperation.

Description

Self-lubricating transmission shaft assembly

Technical Field

The utility model relates to the technical field of petroleum drilling, in particular to a self-lubricating transmission shaft assembly.

Background

As is well known, a screw drill is a positive displacement downhole power drill which uses drilling fluid as power to convert fluid pressure energy into mechanical energy. When slurry pumped by a slurry pump flows through a bypass valve and enters a motor, a certain pressure difference is formed at an inlet and an outlet of the motor, a rotor is pushed to rotate around the axis of a stator, and the rotating speed and the torque are transmitted to a drill bit through a universal shaft and a transmission shaft, so that the drilling operation is realized.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides the self-lubricating transmission shaft assembly which is designed aiming at the drilling operation without lubricating property, effectively solves the drilling operation of foam and air, reduces the abrasion and the underground accidents of the transmission shaft assembly and improves the drilling efficiency.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a self-lubricating transmission shaft assembly, includes the last casing, goes up the transmission shaft, down the casing, goes up the quiet cover of TC, the quiet cover of lower TC and lower transmission shaft, go up the casing and be connected with lower casing cooperation, it is located among casing and the lower casing to go up transmission shaft and last casing rotatable coupling, it sets up under and between the transmission shaft to go up the quiet cover of TC, the quiet cover of TC sets up in the transmission shaft is outside down to the quiet cover one end of TC inserts under to in the casing and with the casing cooperation down, transmission shaft one end inserts last transmission shaft tail end and is connected with last transmission shaft cooperation down.

Specifically, go up through sealed sliding sleeve rotatable coupling between casing and the last transmission shaft to be provided with multiunit annular spout on sealed sliding sleeve, be provided with two sets of first O type circle and two sets of first rotary seal circle in the multiunit annular spout respectively, be provided with wear-resisting cover between sealed sliding sleeve and the last transmission shaft.

Specifically, an oil filling hole is formed in the lower shell, and an oil plug is arranged at the oil filling hole.

Specifically, go up transmission shaft and bottom drive axle and all be provided with thrust cylinder roller bearing down between the casing, be provided with the adjustment pad down between the quiet cover of TC and the adjacent thrust cylinder roller bearing to be provided with down between the quiet cover of TC and the bottom drive axle and prevent falling the lock mother, go up the inside annular groove that is provided with of transmission shaft tail end, be provided with second O type circle on the annular groove inner wall.

Specifically, two groups of annular grooves are formed in the inner wall of the tail portion of the lower TC stationary sleeve, and two groups of second rotary sealing rings are arranged on the inner walls of the two groups of annular grooves respectively.

(III) advantageous effects

Compared with the prior art, the utility model provides a self-lubricating transmission shaft assembly, which has the following beneficial effects: the transmission shaft assembly adopts the cylindrical roller thrust bearing to replace a conventional tandem bearing, increases the axial thrust and has an independent sealing system, takes lubricating grease as a lubricated self-lubricating transmission shaft assembly, increases the sealing at two ends of the transmission shaft assembly, and aims at the design of drilling operation without lubricating property in the process of drilling by using foam and air, the self-lubricating transmission shaft assembly can not generate the transmission shaft grinding phenomenon, thereby effectively solving the drilling operation of foam and air, prolonging the service life of a screw drilling tool, reducing the abrasion and underground accidents of the transmission shaft assembly and improving the drilling efficiency; and the transmission shaft assembly can be suitable for various screw drills.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged partial view of portion A of FIG. 1;

FIG. 3 is an enlarged partial view of portion B of FIG. 1;

in the drawings, the reference numbers: 1. an upper housing; 2. an upper transmission shaft; 3. a lower housing; 4. upper TC static sleeve; 5. lower TC static sleeve; 6. a lower transmission shaft; 7. sealing the sliding sleeve; 8. a first O-ring; 9. a first rotary seal ring; 10. a wear-resistant sleeve; 11. oil blocking; 12. a thrust cylindrical roller bearing; 13. an adjustment pad; 14. the lock nut is prevented from falling; 15. a second O-ring; 16. and a second rotary seal ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

Referring to fig. 1-3, a self-lubricating transmission shaft assembly includes an upper housing 1, an upper transmission shaft 2, a lower housing 3, an upper TC static sleeve 4, a lower TC static sleeve 5 and a lower transmission shaft 6, the upper housing 1 is connected with the lower housing 3 in a matching manner, the upper transmission shaft 2 is located between the upper housing 1 and the lower housing 3, the upper transmission shaft 2 is rotatably connected with the upper housing 1, the upper TC static sleeve 4 is disposed between the lower housing 3 and the upper transmission shaft, the lower TC static sleeve 5 is disposed outside the lower transmission shaft 6, one end of the lower TC static sleeve 5 is inserted into the lower housing 3 and is matched with the lower housing 3, one end of the lower transmission shaft 6 is inserted into the tail end of the upper transmission shaft 2 and is connected with the upper transmission shaft 2 in a matching manner, the upper housing 1 is rotatably connected with the upper transmission shaft 2 through a sealing sliding sleeve 7, a plurality of annular sliding grooves are disposed on the sealing sliding sleeve 7, two sets of first O-rings 8 and two sets of first rotary sealing rings 9 are disposed in the annular sliding grooves, be provided with wear-resisting cover 10 between sealed sliding sleeve 7 and the last transmission shaft 2, be provided with the oil filler point on the casing 3 down, and be provided with oil plug 11 in oil filler point department, go up transmission shaft 2 and all be provided with thrust cylindrical roller bearing 12 between transmission shaft 6 and the casing 3 down, be provided with adjustment pad 13 between lower TC quiet cover 5 and the adjacent thrust cylindrical roller bearing 12, and be provided with down the TC quiet cover 5 and be provided with between transmission shaft 6 and prevent falling the lock mother 14, go up 2 tail end inside of transmission shaft and be provided with the annular groove, be provided with second O type circle 15 on the annular groove inner wall, be provided with two sets of ring channels on the quiet cover 5 afterbody inner wall of lower TC, and be provided with two sets of second rotary seal 16 on two sets of ring channel inner walls respectively.

When the self-lubricating transmission shaft assembly is used, a second rotary sealing ring 16 is arranged on a lower TC (tungsten carbide) static sleeve 5 and then arranged on a lower transmission shaft 6, an anti-falling lock nut 14, an adjusting pad 13 and a thrust cylindrical roller bearing 12 are arranged, a second O-shaped ring 15 is arranged on an upper transmission shaft 2, the upper transmission shaft 2 is arranged on the lower transmission shaft 6, the thrust cylindrical roller bearing 12, an upper TC static sleeve 4 and a lower shell 3 are arranged, a wear-resisting sleeve 10, a first rotary sealing ring 9 and a first O-shaped ring 8 are arranged on a sealing sliding sleeve 7 and then arranged on the upper transmission shaft 2, finally an upper shell 1 is arranged, lubricating grease is injected, and finally an oil injection hole is sealed by an oil plug 11.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a self-lubricating transmission shaft assembly, its characterized in that includes casing (1), goes up transmission shaft (2), casing (3) down, goes up TC quiet cover (4), lower TC quiet cover (5) and lower transmission shaft (6), it is connected with lower casing (3) cooperation to go up casing (1), go up transmission shaft (2) and be located among casing (1) and lower casing (3) to go up transmission shaft (2) and last casing (1) rotatable coupling, it sets up between lower casing (3) and last transmission shaft to go up TC quiet cover (4), lower TC quiet cover (5) sets up in lower transmission shaft (6) outside to lower TC quiet cover (5) one end inserts to in lower casing (3) and with lower casing (3) cooperation, lower transmission shaft (6) one end inserts to last transmission shaft (2) and is connected with last transmission shaft (2) cooperation.

2. The self-lubricating transmission shaft assembly according to claim 1, wherein the upper housing (1) and the upper transmission shaft (2) are rotatably connected through a sealing sliding sleeve (7), a plurality of groups of annular sliding grooves are formed in the sealing sliding sleeve (7), two groups of first O-rings (8) and two groups of first rotary sealing rings (9) are respectively arranged in the plurality of groups of annular sliding grooves, and a wear-resistant sleeve (10) is arranged between the sealing sliding sleeve (7) and the upper transmission shaft (2).

3. The self-lubricating propeller shaft assembly of claim 2, wherein the lower housing (3) is provided with an oil filling hole, and an oil plug (11) is provided at the oil filling hole.

4. The self-lubricating transmission shaft assembly according to claim 3, wherein thrust cylindrical roller bearings (12) are arranged between the upper transmission shaft (2) and the lower transmission shaft (6) and the lower shell (3), an adjusting pad (13) is arranged between the lower TC static sleeve (5) and the adjacent thrust cylindrical roller bearing (12), an anti-dropping lock nut (14) is arranged between the lower TC static sleeve (5) and the lower transmission shaft (6), an annular groove is arranged inside the tail end of the upper transmission shaft (2), and a second O-shaped ring (15) is arranged on the inner wall of the annular groove.

5. The self-lubricating transmission shaft assembly according to claim 4, wherein the lower TC stationary sleeve (5) is provided with two sets of annular grooves on the inner wall of the tail part, and two sets of second rotary sealing rings (16) are respectively arranged on the inner walls of the two sets of annular grooves.