CN216197908U

CN216197908U - Rotary connector of drilling machine

Info

Publication number: CN216197908U
Application number: CN202122752457.6U
Authority: CN
Inventors: 王晓晗; 张亮; 张光烈
Original assignee: Drillto Trenchless Co ltd
Current assignee: Drillto Trenchless Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-04-05
Anticipated expiration: 2031-11-11

Abstract

The utility model relates to a rotary connector of a drilling machine, which comprises a water inlet joint seat, a packing box, a connecting sleeve, an inner pipe and an inner shaft, wherein the inner pipe is connected with the inner shaft through the connecting sleeve; the water inlet joint seat is detachably connected with the packing box through an upper nut, the packing box is detachably connected with the connecting sleeve through a screw, and one end of the inner pipe is detachably connected with the inner shaft through a positioning sleeve; the central hole of the inner pipe and the central hole of the inner shaft are communicated with the inner cavity of the water inlet joint seat; the packing box is internally provided with an inner spacer ring, an intermediate spacer ring and an outer spacer ring, the inner spacer ring is connected with the outer wall of the inner pipe in a sealing manner through an inner washing pipe packing, the intermediate spacer ring is connected with the outer wall of the inner pipe in a sealing manner through an intermediate washing pipe packing, and the outer spacer ring is connected with the outer wall of the inner pipe in a sealing manner through an outer washing pipe packing. The utility model seals by three washing pipe packing, reduces the contact area, has large axial clearance between seals, strong grease storage capacity and lower rotating friction force, thereby having lower heat generation and long service life.

Description

Rotary connector of drilling machine

Technical Field

The utility model relates to trenchless drilling machine equipment, in particular to a drilling machine screwing device.

Background

In the non-excavation drilling process, the power head drives the drill bit to rotate, the inner pipe in the rotary connector is connected with the power head, the inner shaft can rotate along with the inner pipe, and water and slurry between the inner pipe and the shell are sealed.

The existing rotary connector is mostly sealed between an inner pipe and a shell by using a sealing ring, the sealing ring is more in quantity in order to ensure the sealing effect, when the inner pipe rotates, the friction can cause large heat productivity, and the oil storage between the sealing is less, so that the service life of the rotary connector is short, and the rotary connector needs to be frequently maintained and replaced.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is:

the design is a rig revolves and connects ware, seals through three washing pipe packing, reduces area of contact, and axial gap is big between sealed, and storage butter ability is strong, and rotatory frictional force is lower, consequently generates heat lower, long service life.

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

a drilling machine rotary connector comprises a water inlet connector seat, a packing box, a connecting sleeve, an inner pipe and an inner shaft; the water inlet joint seat is detachably connected with the packing box through an upper nut, the packing box is detachably connected with the connecting sleeve through a screw, the inner pipe is positioned at the inner side of the packing box, and one end of the inner pipe is detachably connected with the inner shaft through a positioning sleeve; the central hole of the inner pipe and the central hole of the inner shaft are communicated with the inner cavity of the water inlet joint seat; the packing box is internally provided with an inner spacer ring, an intermediate spacer ring and an outer spacer ring, the inner spacer ring is connected with the outer wall of the inner pipe in a sealing manner through an inner washing pipe packing, the intermediate spacer ring is connected with the outer wall of the inner pipe in a sealing manner through an intermediate washing pipe packing, and the outer spacer ring is connected with the outer wall of the inner pipe in a sealing manner through an outer washing pipe packing.

Furthermore, a counter bore is formed in the inner side spacer ring, an oil cup is arranged in the counter bore, and the oil cup is specifically located between the inner side washpipe packing and the middle washpipe packing.

Further, gaps are reserved between the inner side spacer ring, the middle spacer ring and the outer side spacer ring and the outer wall of the inner pipe; the countersunk hole corresponds to the packing box and the through hole on the connecting sleeve.

Furthermore, the water inlet joint seat, the packing box and the connecting sleeve are coaxially arranged, an end cover is arranged at one end, far away from the packing box, of the connecting sleeve, and the inner shaft penetrates through a center hole of the end cover.

Further, the inner tube is detachably connected with the inner shaft through threads.

Furthermore, the inner spacer ring, the middle spacer ring and the outer spacer ring are sequentially and tightly arranged, and the outer spacer ring is in contact with the end face of the water inlet joint seat through the O-shaped ring.

The utility model has the beneficial effects that: the utility model provides a rig connects ware soon, synthesize the water supply connector seat, the packing box, the adapter sleeve, the inner tube, interior axle, the inboard spacer ring, inboard flushing pipe packing, the oil cup, well spacer ring, middle flushing pipe packing, the collocation of outside spacer ring and outside flushing pipe packing, come to seal the inner tube through three flushing pipe packing, compare in traditional sealing washer and can reduce area of contact, and axial clearance is big between sealed, the storage butter ability is strong, thereby make rotary friction lower, consequently generate heat lower, long service life, save maintenance frequently and change operation.

Drawings

Fig. 1 is a schematic overall structure diagram of a drill rotary connector of the utility model.

Fig. 2 is a partial structural schematic diagram of a drill rotary connector of the utility model.

Fig. 3 is a schematic cross-sectional structural view of a drill adapter according to the present invention.

In the figure: 1. a water inlet joint seat; 2. screwing a nut; 3. a packing box; 4. connecting sleeves; 5. an end cap; 6. an inner tube; 7. a positioning sleeve; 8. an inner shaft; 9. an inner spacer ring; 10. an inner washing pipe packing; 11. an oil cup; 12. a middle spacer ring; 13. a middle washpipe packing; 14. an outer spacer ring; 15. an outer washpipe packing; 16. and an O-shaped ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 to 3, a drill rotary connector comprises a water inlet joint seat 1, a packing box 3, a connecting sleeve 4, an inner pipe 6 and an inner shaft 8; the water inlet joint seat 1 is detachably connected with a packing box 3 through an upper nut 2, the packing box 3 is detachably connected with a connecting sleeve 4 through a screw, the inner pipe 6 is positioned at the inner side of the packing box 3, one end of the inner pipe 6 is detachably connected with the inner shaft 8 through a positioning sleeve 7, and the inner pipe 6 and the inner shaft 8 are both used as a supply channel of water or slurry and supply the water or slurry to a drill rod; the central hole of the inner tube 6 and the central hole of the inner shaft 8 are communicated with the inner cavity of the water inlet joint seat 1; an inner spacer ring 9, an intermediate spacer ring 12 and an outer spacer ring 14 are arranged in the packing box 3, the inner spacer ring 9 is connected with the outer wall of the inner pipe 6 in a sealing mode through an inner flushing pipe packing 10, the inner spacer ring 9 is used for fixing the inner flushing pipe packing 10, the intermediate spacer ring 12 is connected with the outer wall of the inner pipe 6 in a sealing mode through an intermediate flushing pipe packing 13, the intermediate spacer ring 12 is used for fixing the intermediate flushing pipe packing 13, the outer spacer ring 14 is connected with the outer wall of the inner pipe 6 in a sealing mode through an outer flushing pipe packing 15, and the outer spacer ring 14 is used for fixing the outer flushing pipe packing 15.

Be provided with the counter bore on the inboard spacer ring 9, be provided with oil cup 11 in the counter bore, oil cup 11 specifically is located between inboard washpipe packing 10 and middle washpipe packing 13, and oil cup 11 is used for facilitating the use grease gun to the inside grease that pours into of packing box 3.

Gaps are reserved between the inner side spacer ring 9, the middle spacer ring 12 and the outer side spacer ring 14 and the outer wall of the inner pipe 6 and are used as storage spaces for butter; the counter bores correspond to the positions of the through holes in the packing box 3 and the connecting sleeve 4, and the oil cup 11 can be taken out.

The water inlet joint seat 1, the packing box 3 and the connecting sleeve 4 are coaxially arranged, one end, far away from the packing box 3, of the connecting sleeve 4 is provided with an end cover 5, the inner shaft 8 penetrates through a center hole of the end cover 5, and the end cover 5 is used for conducting circumferential restraint on the inner shaft 8.

The inner tube 6 is detachably connected with the inner shaft 8 through threads, and the positioning sleeve 7 is used for enhancing the connection strength and avoiding bending.

The inner spacer ring 9, the middle spacer ring 12 and the outer spacer ring 14 are sequentially and tightly arranged, the outer spacer ring 14 is in contact with the end face of the water inlet joint seat 1 through an O-shaped ring 16, and the O-shaped ring 16 is used for sealing.

The working principle of the utility model is as follows: firstly, connecting a water pipe joint with a water inlet joint seat 1, connecting an inner pipe 6 with a power head of a drilling machine, aligning an oil port of an oil gun with an oil cup 11, performing oil injection operation, and injecting butter into a closed area formed among an inner side spacer ring 9, a middle spacer ring 12, an outer side spacer ring 14 and the outer wall of the inner pipe 6, wherein the butter can fill gaps among an inner side flushing pipe packing 10, a middle flushing pipe packing 13 and an outer side flushing pipe packing 15; the power head drives the inner pipe 6 to rotate, the inner pipe 6 and the inner shaft 8 rotate together, at the moment, water or slurry can be introduced into the water inlet joint seat 1, and the water or slurry is supplied to the drill rod from the water inlet joint seat 1 through the center hole of the inner pipe 6 and the center hole of the inner shaft 8;

when the inner tube 6 is rotatory, because the area of contact of inboard washing pipe packing 10, middle washing pipe packing 13 and outside washing pipe packing 15 and the 6 outer walls of inner tube is less to there is the butter to fill lubricated, consequently rotatory frictional force is less, and the heat that the friction produced is also less, and the butter can absorb the heat, outwards gives off through packing box 3 and adapter sleeve 4.

The above examples are intended to further illustrate the present invention, but are not intended to limit the utility model to these specific embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be understood to be within the protection scope of the present invention.

Claims

1. A rotary connector of a drilling machine is characterized in that: comprises a water inlet joint seat (1), a packing box (3), a connecting sleeve (4), an inner pipe (6) and an inner shaft (8); the water inlet joint seat (1) is detachably connected with the packing box (3) through an upper nut (2), the packing box (3) is detachably connected with the connecting sleeve (4) through a screw, the inner pipe (6) is positioned on the inner side of the packing box (3), and one end of the inner pipe (6) is detachably connected with the inner shaft (8) through a positioning sleeve (7); the central hole of the inner pipe (6) and the central hole of the inner shaft (8) are communicated with the inner cavity of the water inlet joint seat (1); the packing box is characterized in that an inner side spacer ring (9), a middle spacer ring (12) and an outer side spacer ring (14) are arranged in the packing box (3), the inner side spacer ring (9) is connected with the outer wall of the inner pipe (6) in a sealing mode through an inner side washing pipe packing (10), the middle spacer ring (12) is connected with the outer wall of the inner pipe (6) in a sealing mode through a middle washing pipe packing (13), and the outer side spacer ring (14) is connected with the outer wall of the inner pipe (6) in a sealing mode through an outer side washing pipe packing (15).

2. The drill adapter of claim 1, wherein: the inner side spacer ring (9) is provided with a counter bore, an oil cup (11) is arranged in the counter bore, and the oil cup (11) is specifically located between the inner side washpipe packing (10) and the middle washpipe packing (13).

3. The drill adapter of claim 2, wherein: gaps are reserved between the inner side spacer ring (9), the middle spacer ring (12) and the outer side spacer ring (14) and the outer wall of the inner pipe (6); the countersunk hole corresponds to the positions of the through holes on the packing box (3) and the connecting sleeve (4).

4. A drill adapter as defined in claim 3, wherein: the water inlet joint seat (1), the packing box (3) and the connecting sleeve (4) are coaxially arranged, an end cover (5) is arranged at one end, far away from the packing box (3), of the connecting sleeve (4), and the inner shaft (8) penetrates through a center hole of the end cover (5).

5. The drill adapter of claim 4, wherein: the inner tube (6) is detachably connected with the inner shaft (8) through threads.

6. The drill adapter of claim 5, wherein: the inner spacer ring (9), the middle spacer ring (12) and the outer spacer ring (14) are sequentially and tightly arranged, and the outer spacer ring (14) is in contact with the end face of the water inlet joint seat (1) through an O-shaped ring (16).