CN218030073U

CN218030073U - Alloy sealing sheet type drilling machine rotary connector

Info

Publication number: CN218030073U
Application number: CN202222040125.XU
Authority: CN
Inventors: 徐亮; 贾鹏翔; 张光烈; 张亮
Original assignee: Shenzhen Drilling New Energy Technology Co ltd
Current assignee: Shenzhen Drilling New Energy Technology Co ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2022-12-13
Anticipated expiration: 2032-08-04

Abstract

The utility model relates to an alloy sealing sheet type drilling machine rotary connector, which comprises an outer cylinder, an inner rotating shaft and an end cover, wherein the inner rotating shaft is positioned inside the outer cylinder and is movably connected with the outer cylinder through a ball bearing, and the end cover is fixed at the end of the outer cylinder through a screw; the device also comprises a static ring seat, an oil seal, a thrust ball bearing, a spring, an alloy sealing sheet and a positioning pin shaft; the static ring seat is positioned in the outer barrel body, the spring is movably connected with the end cover, the alloy sealing pieces are oppositely arranged at the end part of the inner rotating shaft and the end part of the static ring seat, and the two alloy sealing pieces are coaxially and hermetically connected. The utility model discloses lean on two alloy gasket terminal surface joints to seal water and mud, realize sealed effect, the alloy gasket is wear-resisting, small, the friction area is little, generate heat less, do not need the butter to lubricate the friction terminal surface to the axial adopts thrust ball bearing, and rolling friction is little, effectively ensures to connect the life of ware soon, reduces the frequency of maintenance and change.

Description

Alloy sealing sheet type drilling machine rotary connector

Technical Field

The utility model relates to an underground piping field, concretely relates to alloy sealing piece formula rig connects ware soon.

Background

In the non-excavation drilling process, a power head of a drilling machine drives a drill rod to rotate, an inner rotating shaft in a rotary connector is connected with the power head, and the inner rotating shaft rotates and simultaneously plays a sealing role.

The existing rotary connector is mostly sealed by using a sealing ring and an oil seal, in order to ensure the sealing effect, the sealing ring and the oil seal are more in quantity, the resistance is larger when the rotary connector rotates, the friction can cause large heat productivity, the service life of the rotary connector is short, and the rotary connector needs to be frequently maintained and replaced.

The operation of maintaining and replacing the rotary connector not only needs the whole machine of the drilling machine to be stopped, but also needs to spend more time and manpower to carry out the dismounting and mounting process of the rotary connector, and the construction progress of trenchless drilling is undoubtedly delayed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at:

the alloy sealing sheet type drilling machine rotary connector is developed, water and slurry are sealed by means of the end faces of two alloy sealing sheets in a fit mode, the sealing effect is achieved, the alloy sealing sheets are wear-resistant, small in size, small in friction area, less in heat generation, free of grease for lubricating friction end faces, a thrust ball bearing is axially adopted, rolling friction force is small, the service life of the rotary connector is effectively guaranteed, and maintenance and replacement frequency is reduced.

In order to achieve the above object, the present invention provides the following technical solutions:

an alloy sealing sheet type drilling machine rotary connector comprises an outer cylinder body, an inner rotary shaft and an end cover, wherein the inner rotary shaft is positioned in the outer cylinder body and movably connected with the outer cylinder body through a ball bearing, and the end cover is fixed at the end head of the outer cylinder body through a screw; the device also comprises a static ring seat, an oil seal, a thrust ball bearing, a spring, an alloy sealing sheet and a positioning pin shaft; the static ring seat is located inside the outer cylinder body, and is movably connected with the end cover through the spring, the alloy sealing pieces are oppositely arranged at the end part of the inner rotating shaft and the end part of the static ring seat, and the two alloy sealing pieces are coaxially and hermetically connected.

Preferably, the alloy sealing piece comprises a ring body, a positioning groove and a sealing ring surface, wherein the ring body is in a ring shape, the sealing ring surface is in a ring shape, and the sealing ring surfaces of the two alloy sealing pieces are in contact with each other.

Preferably, one end of the positioning pin shaft is located in the positioning groove, and the other end of the positioning pin shaft is detachably connected with the hole in the inner rotating shaft or the end face of the stationary ring seat.

Preferably, the ring body of the alloy sealing sheet positioned on the inner rotating shaft is specifically positioned in the stepped groove on the end face of the inner rotating shaft and is connected with the stepped groove in a sealing manner through an O-shaped ring; the ring body of the alloy sealing sheet on the static ring seat is specifically positioned in the stepped groove on the end face of the static ring seat and is connected with the stepped groove in a sealing mode through the O-shaped ring.

Preferably, the number of the ball bearings is two, and the thrust ball bearing is specifically positioned between the two ball bearings; the oil seal is positioned between the inner rotating shaft and the outer cylinder body.

The beneficial effects of the utility model are that: the end surfaces of two alloy sealing sheets at the end of an inner rotating shaft and the end of a static ring seat are fitted to seal water and slurry, so that the sealing effect is realized, and leakage is avoided; the alloy gasket is wear-resisting, small, the friction area is little and generate heat few, do not need the butter to lubricate the friction terminal surface, long service life to connect the ware axial soon and adopt thrust ball bearing, roll frictional force is little, effectively ensures to connect the life of ware soon, can show the frequency that reduces maintenance and change, uses manpower sparingly, avoids delaying the construction progress.

Drawings

Fig. 1 is a three-dimensional structure diagram of the alloy sealing sheet type drilling machine rotary connector of the utility model.

Fig. 2 is a three-dimensional structure diagram of another view angle of the alloy sealing sheet type drilling machine screwing device of the present invention.

Fig. 3 is an internal structure schematic diagram of the alloy sealing sheet type drilling machine screwing device of the present invention.

Fig. 4 is a schematic view of an alloy sealing sheet of the rotary connector of the alloy sealing sheet type drilling machine of the present invention.

Fig. 5 is the overall structure cross-sectional view of the alloy sealing sheet type drilling machine rotary connector of the utility model.

In the figure: 1. an outer cylinder; 2. an inner rotating shaft; 3. an end cap; 4. a stationary ring seat; 5. oil sealing; 6. a baffle plate; 7. A ball bearing; 8. a thrust ball bearing; 9. an oil baffle plate; 10. an oil cup; 11. a spring; 12. alloy sealing sheets; 121. a ring body; 122. positioning a groove; 123. a sealing annulus; 13. positioning a pin shaft; 14. and an O-shaped ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1 to 5, an alloy sealing sheet type drilling machine screwing device comprises an outer cylinder body 1, an inner rotating shaft 2 and an end cover 3, wherein the inner rotating shaft 2 is positioned inside the outer cylinder body 1 and is movably connected with the outer cylinder body 1 through a ball bearing 7, the inner rotating shaft 2 can rotate in the outer cylinder body 1, the inner rotating shaft 2 is connected with a power head of a drilling machine, the end cover 3 is fixed at the end head of the outer cylinder body 1 through a screw, and a cylindrical part is arranged on the side surface of the end cover 3 and is connected with a water pipe; the device also comprises a static ring seat 4, an oil seal 5, a thrust ball bearing 8, a spring 11, an alloy sealing sheet 12 and a positioning pin shaft 13; the quiet ring seat 4 is located 1 insides of outer barrel, and quiet ring seat 4 sets up with the internal shaft of 2 is coaxial, and through

spring

11 and 3 swing joint of end cover, spring 11 can make 4 tops of quiet ring seat pivot 2 in tight, alloy gasket 12 is the subtend setting including 2 tip of pivot and 4 tip of quiet ring seat, two coaxial and sealing connection of alloy gasket 12, two alloy gaskets 12 are used for realizing sealedly, avoid inside water or mud to spill over.

Alloy gasket 12 includes ring body 121, constant head tank 122 and sealed anchor ring 123, ring body 121 is ring shape, sealed anchor ring 123 is ring shape, and the sealed anchor ring 123 of two alloy gasket 12 contacts, and sealed anchor ring 123 is the smooth surface, is dynamic friction between two smooth surfaces, and frictional force is lower, consequently can not produce great damping to the pairing rotation.

One end of the positioning pin shaft 13 is located in the positioning groove 122, the other end of the positioning pin shaft 13 is detachably connected with the hole on the end surface of the inner rotating shaft 2 or the stationary ring seat 4, and the positioning pin shaft 13 is used for positioning and fixing the alloy sealing sheet 12.

The ring body 121 of the alloy sealing sheet 12 positioned on the inner rotating shaft 2 is specifically positioned in a stepped groove on the end face of the inner rotating shaft 2 and is in sealing connection with the stepped groove through an O-shaped ring 14, and the O-shaped ring 14 is used for sealing; the ring body 121 of the alloy sealing sheet 12 on the static ring seat 4 is specifically located in a stepped groove on the end face of the static ring seat 4 and is in sealing connection with the stepped groove through an O-shaped ring 14, and the O-shaped ring 14 is used for playing a sealing role.

The number of the ball bearings 7 is two, the thrust ball bearing 8 is specifically positioned between the two ball bearings 7, and the thrust ball bearing 8 can enable the inner rotating shaft 2 to have a certain axial force bearing capacity; the oil seal 5 is positioned between the inner rotating shaft 2 and the outer cylinder body 1, and the oil seal 5 is used for conveniently filling grease between the outer cylinder body 1 and the inner rotating shaft 2.

The utility model discloses a theory of operation does:

the oil baffle plate 9 is arranged on the inner rotating shaft 2 and is close to the shaft shoulder for oil baffle; the ball bearing 7 is arranged on the inner rotating shaft 2 and is close to the oil baffle plate 9; the inner diameter shaft is sleeved on the inner rotating shaft 2 and is close to the end face of the ball bearing 7; the thrust ball bearing 8 is arranged on the inner rotating shaft 2 and is close to the end face of the inner diameter shaft sleeve; the outer diameter shaft is sleeved on the inner rotating shaft 2 and is close to the end face of the thrust ball bearing 8; the ball bearing is arranged on the inner rotating shaft 2 and is close to the end surface of the outer diameter shaft sleeve; the surface of the O-shaped ring is coated with butter and is filled into the corresponding groove;

the positioning pin shaft 13 is arranged in holes on the inner rotating shaft 2 and the static ring seat 4; the alloy sealing piece 12 is arranged in the stepped grooves on the inner rotating shaft 2 and the stationary ring seat 4, and the positioning pin shaft 13 is embedded into the positioning groove 122; the spring 11 is arranged in a hole of the end cover 3; the assembled static ring seat 4 components are arranged in the end cover 3 together; the assembled end cover 3 parts are arranged into the outer cylinder body 1 together; the end cover 3 is fixedly connected with the outer cylinder 1 by screws; the oil seal 5 is pressed into the outer cylinder 1; the baffle 6 is fixedly connected with the outer cylinder 1 by screws; the oil cup 10 is arranged on the outer cylinder body 1, and grease is injected through the oil cup 10 by an oil gun to lubricate a bearing;

the cylindrical part of the end cover 3 is connected with a water pipe, and the water pipe is used for supplying water or slurry into the drill rod; the inner rotating shaft 2 is connected with a power head of a drilling machine, and the power head of the drilling machine is used for driving the drilling machine to rotate; when axial force exists in the drill rod, the inner rotating shaft 2 may be displaced leftwards along the axial direction, at this time, under the action of the elastic force of the plurality of springs 11, the alloy sealing pieces 12 on the static ring seat 4 always tightly push the alloy sealing pieces 12 on the inner rotating shaft 2, and the sealing ring surfaces 123 of the two alloy sealing pieces 12 are in contact with each other, so that a sealing effect is realized, and water and slurry in the drill rod are prevented from overflowing; because the sealing ring surface 123 of the alloy sealing piece 12 is a halo surface, the friction resistance is not large, and the wear resistance is strong, so that the service life is greatly prolonged.

The above examples are provided for further illustration of the present invention, but do not limit the present invention to these specific embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be understood as being within the protection scope of the present invention.

Claims

1. An alloy sealing piece type drilling machine rotary connector comprises an outer cylinder body (1), an inner rotating shaft (2) and an end cover (3), wherein the inner rotating shaft (2) is located inside the outer cylinder body (1) and is movably connected with the outer cylinder body (1) through a ball bearing (7), and the end cover (3) is fixed at the end of the outer cylinder body (1) through a screw; the method is characterized in that: the device also comprises a static ring seat (4), an oil seal (5), a thrust ball bearing (8), a spring (11), an alloy sealing sheet (12) and a positioning pin shaft (13); the static ring seat (4) is located inside the outer barrel body (1), and is movably connected with the end cover (3) through the spring (11), the alloy sealing pieces (12) are oppositely arranged at the end part of the inner rotating shaft (2) and the end part of the static ring seat (4), and the two alloy sealing pieces (12) are coaxially and hermetically connected.

2. The alloy sealing sheet type drill rotary connector according to claim 1, wherein: alloy sealing piece (12) are including ring body (121), constant head tank (122) and sealed anchor ring (123), ring body (121) are the ring shape, sealed anchor ring (123) are the ring shape, and the sealed anchor ring (123) of two alloy sealing pieces (12) contact.

3. The alloy sealing sheet type drill rotary connector according to claim 2, wherein: one end of the positioning pin shaft (13) is positioned in the positioning groove (122), and the other end of the positioning pin shaft (13) is detachably connected with the hole on the end face of the inner rotating shaft (2) or the stationary ring seat (4).

4. The alloy sealing piece type drill rotary connector according to claim 3, characterized in that: a ring body (121) of the alloy sealing sheet (12) positioned on the inner rotating shaft (2) is specifically positioned in the stepped groove on the end surface of the inner rotating shaft (2) and is connected with the stepped groove in a sealing way through an O-shaped ring (14); a ring body (121) of an alloy sealing sheet (12) on the static ring seat (4) is specifically positioned in a stepped groove on the end face of the static ring seat (4) and is connected with the stepped groove in a sealing mode through an O-shaped ring (14).

5. The alloy sealing piece type drill rotary connector according to claim 4, characterized in that: the number of the ball bearings (7) is two, and the thrust ball bearing (8) is specifically positioned between the two ball bearings (7); the oil seal (5) is positioned between the inner rotating shaft (2) and the outer cylinder body (1).