CN212406732U

CN212406732U - Water-through guide drill bit

Info

Publication number: CN212406732U
Application number: CN202020879821.8U
Authority: CN
Inventors: 于峰; 陈扬; 吴春丽; 靳超; 俞超; 牛民
Original assignee: Wuxi Drillto Trenchless Co ltd
Current assignee: Wuxi Drillto Trenchless Co ltd
Priority date: 2020-05-23
Filing date: 2020-05-23
Publication date: 2021-01-26
Anticipated expiration: 2030-05-23

Abstract

The utility model relates to a water-through pilot bit, which comprises an inclined palm section, a slotting section, an eight-square section and two female eight-square sections; the inclined palm section, the grooving section, the octagonal section and the double nuts are sequentially connected and coaxially arranged; a sleeve, a right-angle water pipe and a first water through hole are arranged in each of the double nuts, a second water through hole is arranged in each of the eight sections, a third water through hole is arranged in each of the grooving sections, and a fourth water through hole, a water spraying hole, a nozzle and an annular water tank are arranged in each of the inclined palm sections; the sleeve, the right-angle water pipe, the first water through hole, the second water through hole, the third water through hole, the annular water tank, the fourth water through hole and the water spraying hole are sequentially communicated. The utility model relates to a lead to water direction drill bit sets up water route and nozzle in the drill bit of placing probe or signal source, and when the drill bit was blocked dead, the accessible was to the lateral part water injection before the drill bit, made the stereoplasm soil layer of department on every side of the drill bit meet the water soft to overcome the dead phenomenon of drill bit card.

Description

Water-through guide drill bit

Technical Field

The utility model relates to a non-excavation creeps into the field, concretely relates to lead to water pilot bit.

Background

The trenchless technology is more and more widely applied to municipal construction and national defense construction in China due to unique advantages, and the trenchless guide drill bit is used as a part of the whole trenchless horizontal guide drilling machine and plays an important role in guiding hole forming.

However, in the actual drilling process, the drill bit is often stuck by a hard soil layer in the rotary drilling advancing process, so that the drilling is hindered. The existing drill bit for trenchless drilling does not have the water passing function, so that the drilling operation cannot be continued after the drill bit is stuck, and the construction progress of drilling is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the water-through guide drill bit is characterized in that a water channel and a nozzle are arranged in the drill bit for placing a probe or a signal source, when the drill bit is stuck, slurry can be injected into the front side part of the drill bit through the water channel, so that hard soil layers at the periphery of the drill bit are soft when encountering water, and the phenomenon of sticking of the drill bit is overcome.

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

a water-through pilot bit comprises an inclined palm section, a grooving section, an eight-square section and a double-female eight-square section; the inclined palm section, the grooving section, the octagonal section and the double nuts are sequentially connected and coaxially arranged; a sleeve, a right-angle water pipe and a first water through hole are arranged in each of the double nuts, a second water through hole is arranged in each of the eight sections, a third water through hole is arranged in each of the grooving sections, and a fourth water through hole, a water spraying hole, a nozzle and an annular water tank are arranged in each of the inclined palm sections; the sleeve, the right-angle water pipe, the first water through hole, the second water through hole, the third water through hole, the annular water tank, the fourth water through hole and the water spraying hole are sequentially communicated.

Further, the sleeve is connected with the inner side wall of the double female eight directions through a right-angle water pipe, and the sleeve is sleeved on the right-angle water pipe and is coaxial with the double female eight directions.

Furthermore, the first water through hole and the double nuts are coaxially arranged in eight directions; the second through hole and the coaxial setting of eight square sections, the third through hole sets up with the grooving section is coaxial, annular basin and fourth through hole all with the coaxial setting of palm section to one side.

Furthermore, the annular water tank is specifically located at the joint of the oblique palm section and the grooving section, the included angle between the central axis of the water spray hole and the central axis of the oblique palm section is an acute angle, and the central axis of the water spray hole faces the acute angle of the oblique palm section.

Furthermore, the nozzle is in threaded connection with the water spraying hole, the nozzle is specifically located at one end, far away from the fourth water spraying hole, of the water spraying hole, and the nozzle is completely embedded into the inclined palm section.

The utility model has the advantages that: the utility model provides a lead to water guide bit, improves the inner structure of drill bit, sets up water route and nozzle in the drill bit of placing probe or signal source, and when the drill bit was stuck, the accessible was to the water injection of drill bit front side portion, made the water softening in the stereoplasm soil layer of department around the drill bit to overcome the dead phenomenon of drill bit card, the guarantee creeps into going on smoothly of operation, thereby guarantees the construction progress that creeps into.

Drawings

Fig. 1 is the overall structure cross-sectional view of the water-through pilot bit of the present invention.

Fig. 2 is the utility model discloses a palm section structure cross-sectional view to one side of logical water direction drill bit.

Fig. 3 is the utility model discloses a grooving section structure cross-sectional view of logical water direction drill bit.

Fig. 4 is the utility model discloses an eight-section structural section view of water guide drill bit.

Fig. 5 is a cross-sectional view of the double-female eight-direction structure of the water-through pilot bit of the present invention.

In the figure: 1. a diagonal palm section; 2. a grooving section; 3. an eight-square section; 4. eight directions with double mother; 5. a sleeve; 6. a right-angle water pipe; 7. a first water passage hole; 8. a second water through hole; 9. a third water through hole; 10. an annular water tank; 11. a fourth water through hole; 12. a water spray hole; 13. and (4) a nozzle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in 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, a water-through pilot bit comprises an inclined palm section 1, a slotted section 2, an octagonal section 3 and a double female octagon 4; the inclined palm section 1, the grooving section 2, the octagonal section 3 and the double female octagons 4 are sequentially connected and coaxially arranged; a sleeve 5, a right-angle water pipe 6 and a first water through hole 7 are arranged in the double female octagon 4, a second water through hole 8 is arranged in the octagon section 3, a third water through hole 9 is arranged in the grooving section 2, and a fourth water through hole 11, a water spraying hole 12, a nozzle 13 and an annular water tank 10 are arranged in the oblique palm section 1; the sleeve 5, the right-angle water pipe 6, the first water through hole 7, the second water through hole 8, the third water through hole 9, the annular water tank 10, the fourth water through hole 11 and the water spraying hole 12 are sequentially communicated to form a water supply pipeline for spraying water around the tip of the oblique palm section 1.

The sleeve 5 is connected with the inner side wall of the double female octagon 4 through the right-angle water pipe 6, specifically is welded in a spot welding mode, the sleeve 5 is connected with the right-angle water pipe 6 in a welding mode, and the sleeve 5 is sleeved on the right-angle water pipe 6 and is coaxial with the double female octagon 4.

The first water through hole 7 is coaxially arranged with the double female eight-direction 4; the second through water hole 8 and the coaxial setting of eight side sections 3, the third through water hole 9 and the coaxial setting of fluting section 2, annular basin 10 and fourth through water hole 11 all with the coaxial setting of 1 section of palm to one side.

Annular basin 10 specifically is located the junction of oblique palm section 1 and fluting section 2, the central axis of hole for water spraying 12 is the acute angle with the contained angle of the central axis of oblique palm section 1, the central axis of hole for water spraying 12 is towards the closed angle department of oblique palm section 1 to can make the direction of water spraying towards the leading flank of closed angle department of oblique palm section 1, satisfy the water spraying around the closed angle department of oblique palm section 1.

The nozzle 13 is in threaded connection with the water spraying hole 12, the nozzle 13 is specifically located at one end, far away from the fourth water spraying hole 11, of the water spraying hole 12, the nozzle 13 is completely embedded into the oblique palm section 1, and the nozzle 13 does not leak outwards relative to the outer side wall of the oblique palm section 1, so that the nozzle 13 is prevented from falling off in the drilling process.

The utility model discloses a theory of operation does: the pilot bit is used on a horizontal spiral drilling machine; oblique palm section 1, the

fluting section

2, 3 and two female octagons 4 of octagon section weld in proper order, when using, the guide bit is connected at the drilling rod foremost, the water pipe in the drilling rod inserts sleeve 5, realize supplying water, the sleeve 5 is followed in proper order to the high pressure water, right angle water pipe 6, first limbers 7, second limbers 8, third limbers 9, annular water tank 10, fourth limbers 11 and hole for water spraying 12 are finally through the preceding lateral part blowout of the tip department of nozzle 13 towards oblique palm section 1, thereby make the stereoplasm soil layer on every side of the tip department of oblique palm section 1 meet the water soft, water also can play the lubrication action simultaneously, thereby solve the drill bit and blocked dead phenomenon by stereoplasm soil layer, the guarantee is crept in operation and goes on smoothly, thereby guarantee the construction progress of creeping into.

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. A water-through pilot bit is characterized in that: comprises an inclined palm section (1), a slotting section (2), an eight-square section (3) and a double-female eight-square section (4); the inclined palm section (1), the grooving section (2), the octagonal section (3) and the double female octagons (4) are sequentially connected and coaxially arranged; a sleeve (5), a right-angle water pipe (6) and a first water through hole (7) are arranged in each double female octagon (4), a second water through hole (8) is arranged in each octagon section (3), a third water through hole (9) is arranged in each grooving section (2), and a fourth water through hole (11), a water spraying hole (12), a nozzle (13) and an annular water tank (10) are arranged in each inclined palm section (1); the sleeve (5), the right-angle water pipe (6), the first water through hole (7), the second water through hole (8), the third water through hole (9), the annular water tank (10), the fourth water through hole (11) and the water spraying hole (12) are communicated in sequence.

2. The water-through pilot bit of claim 1, wherein: sleeve (5) are connected with two female eight sides (4) inside wall through right angle water pipe (6), sleeve (5) cover is established on right angle water pipe (6) and coaxial mutually with two female eight sides (4).

3. The water-through pilot bit of claim 2, wherein: the first water through hole (7) is coaxially arranged with the double female eight-direction (4); the second through water hole (8) and the coaxial setting of eight square sections (3), third through water hole (9) and the coaxial setting of fluting section (2), annular basin (10) and fourth through water hole (11) all with palm section (1) coaxial setting to one side.

4. A water-through pilot bit according to claim 3, wherein: annular basin (10) specifically are located the junction of oblique palm section (1) and fluting section (2), the central axis of hole for water spraying (12) is the acute angle with the contained angle of the central axis of oblique palm section (1), the central axis of hole for water spraying (12) is towards the closed angle department of oblique palm section (1).

5. The water-through pilot bit according to claim 4, wherein: the spray nozzle (13) is in threaded connection with the water spraying hole (12), the spray nozzle (13) is specifically located at one end, far away from the fourth water spraying hole (11), of the water spraying hole (12), and the spray nozzle (13) is completely embedded into the inclined palm section (1).