CN209990461U - Non-excavation rig dabber connects ware soon - Google Patents

Abstract

The embodiment of the utility model provides a be applicable to underground piping field of laying, a non-excavation rig dabber connects ware soon is provided, including the dabber subassembly, the connecting pipe, the bearing frame, bearing and seal cover, connecting pipe and dabber subassembly fixed connection, the bearing sets up between bearing frame and connecting pipe, bearing and connecting pipe interference fit, the portion of cup jointing of seal cover cup joints on the dabber subassembly, the terminal surface of bearing frame passes through second fastener fixed connection with the terminal surface of the portion of cup jointing, bearing one end is supported and is leaned on the interior terminal surface of bearing frame, the other end is supported and is leaned on the terminal surface of the portion of cup jointing, inlet and attach fitting have been seted up on the support, the dabber subassembly has the mud runner, inlet and mud runner intercommunication, the one end that the dab. The utility model discloses can solve current ware of connecing soon and lead to the problem of sealing member damage easily.

Description

Non-excavation rig dabber connects ware soon

Technical Field

The utility model belongs to the technical field of underground piping lays, especially, relate to a non-excavation rig dabber connects ware soon.

Background

With the continuous and stable growth of economy in China, the urbanization process is further accelerated, and the demand of underground pipelines is increased year by year. And people's consciousness to environmental protection's enhancement, more and more pay more attention to environmental protection work. The trenchless technology plays a very great role in the construction of underground pipelines in China and even the world. The trenchless directional pipe-laying drilling machine is novel engineering mechanical equipment for laying underground pipelines, and in the construction process, the supply of slurry plays an important role in the performance of the equipment, and more importantly plays a key role in the success or failure of the whole engineering. In the construction process, a large amount of slurry is conveyed to underground pore-forming through the rotary connector and the drill rod. In the earlier stage of China, a plurality of trenchless directional pipe-laying drilling machines are not provided with bearing centering supports, so that the sealing damage is fast, the service life is short, the pressure and the slurry supply quantity of slurry supply are influenced, the operation efficiency is influenced, and serious accidents such as difficult slurry return at the bottom of a hole, difficult hole forming, collapse, buried drilling and the like can be caused sometimes.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a technical problem that will solve provides a non-excavation rig dabber connects ware soon, aims at solving current the problem that connects the ware soon and lead to the sealing member to damage easily.

The embodiment of the utility model provides a realize like this, a non-excavation rig dabber connects ware soon, it includes dabber subassembly, connecting pipe, bearing frame, bearing and seal cover, the connecting pipe with the dabber subassembly passes through first fastener fixed connection, the bearing frame cup joints on the connecting pipe, the bearing sets up between the bearing frame with the connecting pipe, the bearing with connecting pipe interference fit, the seal cover includes the support and connects the support and along the cup joint portion that the outer lane of support encircles, the cup joint portion cup joints on the dabber subassembly, the one end of dabber subassembly supports the internal face of support, the terminal surface of bearing frame with the terminal surface of cup joint portion passes through second fastener fixed connection, bearing one end supports the interior terminal surface of bearing frame, the other end of bearing supports the terminal surface of cup joint portion, the bearing part is provided with a liquid inlet, the liquid inlet is connected with a connector for introducing slurry, the mandrel component is provided with a slurry flow channel, the liquid inlet is communicated with the slurry flow channel, one end of the mandrel component, which is close to the liquid inlet, is provided with a sealing element, and the sealing element is sleeved on the sleeving part and between the mandrel component.

Further, the sealing member is including cup jointing supporting ring, sealing washer and clamping ring on the dabber subassembly, the supporting ring the sealing washer and the clamping ring) arranges in proper order, be provided with the retaining ring on the dabber subassembly, be provided with the annular groove in the portion of cup jointing, the retaining ring joint is in the annular groove, the retaining ring supports and leans on the supporting ring, be provided with adjusting screw on the bearing portion, adjusting screw passes the bearing portion, clamping ring one end with the sealing washer contacts, the clamping ring other end supports and leans on adjusting screw.

Further, the sealing rings are provided with a plurality of sealing rings, wherein a spacer ring is arranged between two adjacent sealing rings and sleeved on the mandrel component.

Furthermore, the cross-sectional profile of the sealing ring along the axis of the sealing ring is of a V-shaped structure, and the end faces of the contact ends of the supporting ring and the sealing ring and the end faces of the contact ends of the pressing ring and the sealing ring are both V-shaped end faces matched with the V-shaped structure.

Furthermore, the sleeve-joint part of the sealing sleeve is provided with a first oil injection nozzle for injecting a lubricant, the spacer ring is provided with a plurality of filling channels at intervals along the circumferential direction, and the circumference where the plurality of filling channels are located is opposite to the first oil injection nozzle.

Further, the bearing has two, and the two bearings abut against each other.

Furthermore, a second oil injection nozzle used for injecting a lubricant into the bearing is arranged on the bearing seat, an oil seal is arranged between the bearing seat and the connecting pipe, and the oil seal is close to the matching surface of the bearing seat and the connecting pipe.

Further, the mandrel component is made of hard alloy materials.

Further, the end face of the bearing seat is provided with a first step part, the end face of the sleeve joint part is provided with a second step part mutually engaged with the first step part, and an O-shaped ring is arranged between the contact surfaces of the first step part and the second step part.

Further, the second fastening piece is a screw, a circumferential flange is arranged on the end face of the bearing seat, a threaded hole is formed in the circumferential flange, and the screw penetrates through the threaded hole and is screwed into the end face of the bearing seat.

Compared with the prior art, the embodiment of the utility model, beneficial effect lies in: the utility model discloses pack the connecting pipe into the bearing frame, set up the bearing in bearing frame and the connecting pipe, the dabber subassembly is connected with the connecting pipe and is connected bearing frame and the cover seal cover on the dabber subassembly, can fully guarantee its higher axiality when connecting pipe and the relative seal cover of dabber subassembly are rotatory, with reduce the connecting pipe, the wearing and tearing of dabber subassembly and sealing member, can play fine guard action to dabber and sealing member, prevent that the dabber subassembly from leading to soon connecting the ware to leak because of wearing and tearing warp, influence mud supply pressure, thereby realize mud from the transport of water pipe to drilling rod, it is sealed reliable, maintain simple and convenient, high efficiency long service life.

Drawings

Fig. 1 is a schematic view of a test structure of a mandrel rotary connector of a trenchless drilling machine provided by an embodiment of the invention;

fig. 2 is a sectional view in the direction of a-a in fig. 1.

In the drawings, each reference numeral denotes:

1. a mandrel assembly; 2. sealing sleeves; 3. a connecting pipe; 4. a seal member; 50. a first fastener; 51. a second fastener; 60. a bearing seat; 61. a bearing; 21. a liquid inlet; 22. a support portion; 23. a socket joint part; 24. a second step portion; 25. an annular groove; 26. an adjusting screw; 62. a first step portion; 63. an O-shaped ring; 64. a circumferential flange; 41. a supporting ring; 42. a seal ring; 43. pressing a ring; 7. a spacer ring; 27. a first oil nozzle; 65. a second oil injection nozzle; 66. oil sealing; 8. a joint; 9. and a retainer ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in 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 invention and are not intended to limit the invention.

As shown in fig. 1 and fig. 2, the embodiment of the present invention provides a rotary connector for a mandrel of a trenchless drilling machine, including a mandrel assembly 1, a connecting pipe 3, a bearing seat 60, a bearing 61 and a sealing sleeve 2, the connecting pipe 3 is fixedly connected to the mandrel assembly 1 through a first fastener 50, the bearing seat 60 is sleeved on the connecting pipe 3, the bearing 61 is disposed between the bearing seat 60 and the connecting pipe 3, the bearing 61 is in interference fit with the connecting pipe 3, the sealing sleeve 2 includes a supporting portion 22 and a sleeve portion 23 connected to the supporting portion 22 and surrounding along an outer ring of the supporting portion 22, the sleeve portion 23 is sleeved on the mandrel assembly 1, one end of the mandrel assembly 1 abuts against an inner wall surface of the supporting portion 22, an end surface of the bearing seat 60 is fixedly connected to an end surface of the sleeve portion 23 through a second fastener 51, one end of the bearing 61 abuts against an inner end surface, the bearing part 22 is provided with a liquid inlet 21, the liquid inlet 21 is connected with a connector 8 for introducing slurry, the mandrel component 1 is provided with a slurry flow channel, the liquid inlet 21 is communicated with the slurry flow channel, one end of the mandrel component 1, which is close to the liquid inlet 21, is provided with a sealing element 4, and the sealing element 4 is sleeved between the sleeving part 23 and the mandrel component 1.

In the above embodiment, it is preferable that the bearings 61 have two, and the two bearings 61 abut against each other. In addition, the mandrel assembly 1 is made of a cemented carbide material. Adopt duplex bearing centering and carbide dabber interference fit design, can fully guarantee its higher axiality on the one hand, reduce connecting pipe 3, the wearing and tearing of dabber subassembly 1 and sealing member 4, simultaneously owing to adopt carbide material, dabber subassembly 1's degree of wear resistance and life obtain promoting by a wide margin for ordinary material, can not appear because of sealing member 4 hardness is higher, lead to connect the ware soon and be worn out by sealing member 4 at the during operation dabber to influence mud supply pressure and supply capacity.

Specifically, sealing member 4 is including cup jointing bearing ring 41 on dabber subassembly 1, sealing washer 42 and clamping ring 43, bearing ring 41, sealing washer 42 and clamping ring 43 arrange in proper order, be provided with retaining ring 9 on the dabber subassembly 1, be provided with annular groove 25 on the portion 23 that cup joints, retaining ring 9 joint is in annular groove 25, retaining ring 9 supports and leans on bearing ring 41, be provided with adjusting screw 26 on the supporting portion 22, adjusting screw 26 passes supporting portion 22, clamping ring 43 one end contacts with sealing washer 42, the clamping ring 43 other end supports and leans on adjusting screw 26. Preferably, the sealing rings 42 are provided in plurality, wherein a spacer ring 7 is disposed between two adjacent sealing rings 42, and the spacer ring 7 is sleeved on the mandrel assembly 1. Optionally, the cross-sectional profile of the sealing ring 42 along the axis thereof is a V-shaped structure, and both the end surface of the contact end of the supporting ring 41 and the sealing ring 42 and the end surface of the contact end of the pressing ring 43 and the sealing ring 42 are adapted to the V-shaped end surface of the V-shaped structure. The end face adaptation of supporting ring 41 and clamping ring 43 and sealing washer 42 can effectively prevent sealing washer 42 dislocation, further guarantees sealed effect. In other embodiments, the sealing ring 42 may have a U-shaped or semi-circular cross-sectional profile along its axis, and the application is not limited thereto.

In the above embodiment, the end surface of the bearing seat 60 is provided with the first step portion 62, the end surface of the sleeve portion 23 is provided with the second step portion 24 engaged with the first step portion 62, and the O-ring 63 is arranged between the contact surfaces of the first step portion 62 and the second step portion 24, so that the good sealing performance between the bearing seat 60 and the sealing sleeve 2 can be ensured. In addition, the second fastening member 51 is a screw, the end surface of the bearing housing 60 is provided with a circumferential flange 64, the circumferential flange 64 is provided with a threaded hole, and the screw passes through the threaded hole and is screwed into the end surface of the bearing housing 60. A retainer ring or the like may be further provided between the mandrel assembly 1 and the gland 2 to further improve the sealing.

In order to regularly inject grease into the screw connector to ensure the lubricating effect, as shown in fig. 2, a first grease nipple 27 for injecting grease is arranged on the sleeve part 23 of the sealing sleeve 2, a plurality of filling channels are arranged on the spacer ring 7 at intervals around the circumferential direction, and the circumference where the plurality of filling channels are located is opposite to the first grease nipple 27. The bearing seat 60 is also provided with a second grease injection nozzle 65 for injecting grease into the bearing 61, and an oil seal 66 is arranged between the bearing seat 60 and the connecting pipe 3, and the oil seal 66 is close to the matching surface of the bearing seat 60 and the connecting pipe 3.

In practical operation, the sealing element 4, the spacer ring 7 and the like can be firstly installed in the sealing sleeve 2, then the oil seal 66, the bearing 61 and the connecting pipe 3 are installed in the bearing seat 60, then the mandrel component 1 and the connecting pipe 3 are connected, the first fastening piece 50 is installed, finally the bearing seat 60 and the sealing sleeve 2 are fixedly connected through the second fastening piece 51, and the O-shaped ring 63 is added to ensure good sealing performance. When the slurry passes through the screwing connector, the sealing element 4 is extruded to be tightly attached to the sealing sleeve 2 and the mandrel component 1, and the slurry is not easy to leak under the action of the sealing ring 42 and the grease, so that a good sealing effect is achieved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The rotary connector for the mandrel of the trenchless drilling machine is characterized by comprising a mandrel component (1), a connecting pipe (3), a bearing seat (60), a bearing (61) and a sealing sleeve (2), wherein the connecting pipe (3) is fixedly connected with the mandrel component (1) through a first fastener (50), the bearing seat (60) is sleeved on the connecting pipe (3), the bearing (61) is arranged between the bearing seat (60) and the connecting pipe (3), the bearing (61) is in interference fit with the connecting pipe (3), the sealing sleeve (2) comprises a supporting part (22) and a sleeve part (23) which is connected with the supporting part (22) and surrounds along an outer ring of the supporting part (22), the sleeve part (23) is sleeved on the mandrel component (1), one end of the mandrel component (1) abuts against the inner wall surface of the supporting part (22), the terminal surface of bearing frame (60) with the terminal surface of cup jointing portion (23) passes through second fastener (51) fixed connection, bearing (61) one end is supported and is leaned on the interior terminal surface of bearing frame (60), the other end of bearing (61) is supported and is leaned on the terminal surface of cup jointing portion (23), inlet (21) have been seted up on bearing portion (22), inlet (21) are connected with joint (8) that are used for letting in mud, dabber subassembly (1) has the mud runner, inlet (21) with the mud runner intercommunication, dabber subassembly (1) is close to the one end of inlet (21) is provided with sealing member (4), sealing member (4) cup joint portion (23) with between dabber subassembly (1).

2. The rotary joiner for the mandrel of a trenchless drilling machine according to claim 1 wherein said seal (4) comprises a support ring (41), a seal ring (42) and a pressure ring (43) sleeved on said mandrel assembly (1), the supporting ring (41), the sealing ring (42) and the pressing ring (43) are arranged in sequence, a retainer ring (9) is arranged on the mandrel component (1), an annular groove (25) is arranged on the sleeve joint part (23), the retainer ring (9) is clamped in the annular groove (25), the retainer ring (9) abuts against the supporting ring (41), the supporting part (22) is provided with an adjusting screw (26), the adjusting screw (26) penetrates through the supporting part (22), clamping ring (43) one end with sealing washer (42) contact, clamping ring (43) other end supports and leans on adjusting screw (26).

3. The rotary joiner for the mandrel of the trenchless drilling machine according to claim 2, wherein the sealing rings (42) are provided in plurality, wherein a spacer ring (7) is arranged between two adjacent sealing rings (42), and the spacer ring (7) is sleeved on the mandrel component (1).

4. The rotary connector for the mandrel of the trenchless drilling machine as claimed in claim 3, characterized in that the cross-sectional profile of the sealing ring (42) along the axis thereof is a V-shaped structure, and the end surface of the contact end of the supporting ring (41) and the sealing ring (42) and the end surface of the contact end of the pressing ring (43) and the sealing ring (42) are both V-shaped end surfaces adapted to the V-shaped structure.

5. The rotary connector for the mandrel of the trenchless drilling machine as claimed in claim 4, characterized in that a first oil nozzle (27) for injecting a lubricant is arranged on the sleeve part (23) of the sealing sleeve (2), a plurality of filling channels are arranged on the spacer ring (7) at intervals around the circumferential direction, and the circumference of the plurality of filling channels is opposite to the first oil nozzle (27).

6. The trenchless drilling rig mandrel spinner of any of claims 1-5, wherein there are two of said bearings (61), two of said bearings (61) abutting each other.

7. The rotary joiner for the mandrel of the trenchless drilling machine according to any one of claims 1 to 5, wherein a second oil nozzle (65) for injecting a lubricant into the bearing (61) is arranged on the bearing seat (60), and an oil seal (66) is arranged between the bearing seat (60) and the connecting pipe (3), wherein the oil seal (66) is close to the matching surface of the bearing seat (60) and the connecting pipe (3).

8. The trenchless drilling rig mandrel spinner of any of claims 1-5, wherein the mandrel assembly (1) is a cemented carbide material.

9. The rotary joiner for the mandrel of the trenchless drilling machine according to claim 1, wherein a first step part (62) is arranged on the end surface of the bearing seat (60), a second step part (24) mutually fitting with the first step part (62) is arranged on the end surface of the sleeve part (23), and an O-shaped ring (63) is arranged between the contact surfaces of the first step part (62) and the second step part (24).

10. The trenchless drilling rig mandrel adapter of claim 1 wherein the second fastener (51) is a screw, the end face of the bearing housing (60) is provided with a circumferential flange (64), the circumferential flange (64) is provided with a threaded hole, and the screw is threaded through the threaded hole and into the end face of the bearing housing (60).

Images