CN216240443U

CN216240443U - Synchronous hobbing cone crushing unit and barrel drill

Info

Publication number: CN216240443U
Application number: CN202121739968.8U
Authority: CN
Inventors: 刘新军; 尚明; 张鹏; 王恒
Original assignee: SANYUAN PETROLEUM BITS PLANT; Shaanxi Jingang Petroleum Machinery Co ltd
Current assignee: SANYUAN PETROLEUM BITS PLANT; Shaanxi Jingang Petroleum Machinery Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-04-08
Anticipated expiration: 2031-07-29

Abstract

The utility model discloses a synchronous hobbing cone crushing unit which comprises a shank, wherein the upper end of the shank is uniformly provided with A bearing shafts in the circumferential direction, wherein A is 2, 4 or 6; an umbrella-shaped cone is mounted on each bearing shaft through a bearing, and B synchronous teeth are uniformly arranged on the outer surface of the root part of each cone in the circumferential direction, wherein B is a natural number and is more than or equal to 3 and less than or equal to 20; c top teeth are arranged on the outer surface of the top end of each cone, wherein C is a natural number and is more than or equal to 2 and less than or equal to 36; the synchronizing teeth of each cone mesh with the synchronizing teeth of an adjacent cone. The utility model also discloses a barrel drill which comprises a barrel body, wherein the front end of the barrel body is uniformly provided with a plurality of synchronous rolling cutter crushing units along the circumferential direction. The utility model has the following beneficial effects: 1. all the gear wheels rotate towards one direction under the driving of the mutually meshed synchronous teeth; 2. when the rotation of one roller cone is discontinuous, the roller cone engaged with the roller cone can help the roller cone to rotate; 3. the top teeth have high hardness and high wear resistance, and the size consistency of the broken ring surface is ensured.

Description

Synchronous hobbing cone crushing unit and barrel drill

Technical Field

The utility model relates to the field of rock crushing tools, in particular to a synchronous hobbing cone crushing unit and a barrel drill.

Background

The application of the rotary excavating technology on pile foundation engineering has promoted the use of cone barrel drill, but the rock breaking unit used on the cone barrel drill is mostly a cone palm piece consisting of a cone and a cone palm of an insert tricone bit or an improved version assembly of a similar structure, and the biggest defect of the cone palm piece is as follows: the cone is accidentally stuck or broken, so that uneven stress is caused, and the consistency of a broken ring surface is influenced; secondly, the cone palm pieces are positioned on the thick-wall cylinder body through a welding method, the welding precision and the welding temperature belong to links which are difficult to control, the situation that the cone palm pieces are abnormally damaged often occurs, the general service life is short, and the engineering cost is high; thirdly, the original cone palm pieces are cut off by oxyacetylene flame every time the cone palm pieces are replaced, so that the cylindricity of the barrel drill is continuously reduced, the installation position for welding the new cone palm pieces is extremely irregular, the welding precision is continuously reduced, the welding difficulty and strength are improved, the performance damage degree of a cutting unit is gradually improved, and the service life is shortened; and fourthly, the roller cone palm piece is complex to replace on site, the precision after replacement cannot be guaranteed, and the service life is shortened by replacing on site.

Therefore, how to solve the problems of the rock breaking unit under the above working conditions is a technical problem which needs to be solved by the technical personnel in the field at present.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model mainly aims to provide a synchronous rolling-cut cone crushing unit which can prevent the problem that accidental blocking of a cone affects crushing and face changing consistency; the utility model also provides a barrel drill provided with the synchronous hobbing cone crushing unit.

In order to achieve the above object, the present invention adopts the following technical solutions.

The synchronous rolling-cut cone crushing unit comprises a shank, wherein the upper end of the shank is uniformly provided with A bearing shafts in the circumferential direction, wherein A is 2, 4 or 6; an umbrella-shaped cone is mounted on each bearing shaft through a bearing, and B synchronous teeth are uniformly arranged on the outer surface of the root part of each cone in the circumferential direction, wherein B is a natural number and is more than or equal to 3 and less than or equal to 20; c top teeth are arranged on the outer surface of the top end of each cone, wherein C is a natural number and is more than or equal to 2 and less than or equal to 36; the synchronizing teeth of each cone mesh with the synchronizing teeth of an adjacent cone.

Furthermore, the included angle between each bearing shaft and the handle part is not equal, and the included angle between each bearing shaft and the central line of the handle part ranges from 90 degrees to 175 degrees.

Further, the synchronizing tooth comprises a core and a hardened protective layer covering the core.

Furthermore, the hardness of the core part is HRC38-42 in Rockwell hardness, and the hardness of the hardening protection layer is HRA 80-92 in Rockwell hardness.

Furthermore, the top tooth is made of hard alloy.

Furthermore, the outer surface of the top tooth is made of hard alloy, and the inner part of the top tooth is made of artificial polycrystalline diamond.

Further, the handle portion is provided with a mounting hole.

Furthermore, the angle α between one bearing shaft and the center line of the shank is 2, the angle β between the other bearing shaft and the center line of the shank is 126 °, the core hardness of the synchronizing tooth is rockwell hardness HRC42, and the hardness of the hardened protective layer is rockwell hardness HRA 83.

And (II) the cylindrical drill comprises a cylindrical body, wherein a plurality of mounting seats are uniformly arranged at the front end of the cylindrical body along the circumferential direction, and each mounting seat is provided with a synchronous rolling cutter crushing unit.

Compared with the prior art, the technical scheme of the utility model has the following beneficial effects: 1. all the gear wheels synchronously rotate towards one direction under the driving of the meshed synchronous teeth, and the effect of impacting, slipping and shearing broken rocks is formed on a working surface; 2. in the later stage of use, when one cone is discontinuously rotated, the cone meshed with the cone can help the cone to rotate, eccentric wear caused by accidental blocking of the cone is prevented, and the rock crushing efficiency is improved; 3. the top teeth embedded on the top have high hardness and high wear resistance, and the long-term consistency of the size of the broken ring surface is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic perspective view of one embodiment of a synchronous rolling cutter crushing unit of the present invention;

FIG. 2 is a front perspective view of one embodiment of a synchronous rolling cutter crushing unit of the present invention;

FIG. 3 is an exploded schematic view of one embodiment of a synchronous rolling cutter crushing unit of the present invention;

FIG. 4 is a schematic view of a barrel drill with a synchronous hobbing cone crushing unit installed;

in the above figures:

1 a handle part; 2, bearing shaft; 3, a roller cone; 301 synchronizing teeth; 302 top teeth; 4, mounting holes; 5, a cylinder body; 6 mounting seats.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The utility model can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the utility model. Therefore, the present invention is not limited to the specific embodiments disclosed below.

On the first aspect, referring to fig. 1, fig. 2 and fig. 3, a synchronous rolling-cut cone crushing unit includes a shank 1, where a ═ 2, 4 or 6 are uniformly arranged at the upper end of the shank 1 in the circumferential direction; an umbrella-shaped cone 3 is mounted on each bearing shaft 2 through a bearing, and B synchronous teeth 301 are uniformly arranged on the outer surface of the root part of each cone 3 in the circumferential direction, wherein B is a natural number, and B is more than or equal to 3 and less than or equal to 20; c top teeth 302 are arranged on the outer surface of the top end of each cone 3, wherein C is a natural number and is more than or equal to 2 and less than or equal to 36; the timing teeth 301 of each cone 3 mesh with the timing teeth 301 of an adjacent cone 3.

In the above embodiment, the mutually meshed cones 3 generate synchronous and equidirectional driving forces, an impact and slippage shearing effect on rock crushing is formed on the working face, and meanwhile, in the later stage of use, when one cone 3 does not rotate continuously, the cone 3 meshed with the cone 3 can help the cone to rotate, so that eccentric wear caused by accidental blocking of the cone 3 is prevented, and the rock crushing efficiency is improved. The gear wheels 3 meshed with each other generate synchronous and equidirectional driving capability, the crushing efficiency is improved, the service life is prolonged, meanwhile, the quantity of hard alloy is reduced, the engineering cost is reduced, the labor intensity is reduced by a convenient replacement mode, and the construction period is shortened.

Further, the included angle between each bearing shaft 2 and the handle part 1 is not equal, and the included angle between each bearing shaft 2 and the central line of the handle part 1 ranges from 90 degrees to 175 degrees.

Further, the synchronizing tooth 301 includes a core and a hardened protective layer covering the core.

In the above embodiment, the synchronous teeth 301 have high hardness and high wear resistance on the surface and low hardness and high toughness in the core, so that the impact resistance of the rock breaking unit of the synchronous hobbing cutter and the bending resistance of the teeth are improved, early tooth breaking due to torsion is not easy to occur in construction, the service life is greatly reduced, the synchronous equidirectional driving capability of the meshed cutters is realized, the breaking efficiency is improved, and the service life is prolonged.

Further, the top tooth 302 is made of cemented carbide. Optionally, the outer surface of the top tooth 302 is made of cemented carbide, and the inner portion is made of artificial polycrystalline diamond. The top teeth 302 embedded on the top have high hardness and high wear resistance, and the long-term consistency of the size of the broken ring surface is ensured.

Referring to fig. 1, 2 and 3, as an embodiment of the present invention, the number a of the bearing shafts 2 is 2, the number B of the synchronizing teeth 301 is 14, the number C of the top teeth 302 is 12, an angle α between one bearing shaft 2 and a center line of the shank 1 is an angle β between the other bearing shaft 2 and a center line of the shank 1, and α β is 126 °, the core hardness of the synchronizing teeth 301 is rockwell hardness HRC42, and the hardness of the hardened protective layer is rockwell hardness HRA 83.

In a second aspect, the barrel drill comprises a barrel body 5, a plurality of installation seats 6 are uniformly arranged at the front end of the barrel body 5 along the circumferential direction, and each installation seat 6 is provided with a synchronous rolling cutter crushing unit.

Evenly set up a plurality of synchronous roll cutting cone crushing unit at the front end of barrel 5, the gear wheel 3 of every synchronous roll cutting cone crushing unit intermeshing has produced synchronous syntropy driving force, has improved crushing efficiency, has prolonged life, and the reduction of carbide quantity is used simultaneously, has reduced engineering cost, and convenient change mode has reduced intensity of labour, has shortened construction cycle.

Although the present invention has been described in detail in this specification with reference to specific embodiments and illustrative embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Accordingly, such modifications and improvements are intended to be within the scope of this invention as claimed.

Claims

1. The synchronous rolling-cut cone crushing unit is characterized by comprising a shank (1), wherein A bearing shafts (2) are uniformly arranged at the upper end of the shank (1) in the circumferential direction, and A is 2, 4 or 6; an umbrella-shaped cone (3) is mounted on each bearing shaft (2) through a bearing, and B synchronous teeth (301) are uniformly arranged on the outer surface of the root part of each cone (3) in the circumferential direction, wherein B is a natural number and is more than or equal to 3 and less than or equal to 20; c top teeth (302) are arranged on the outer surface of the top end of each cone (3), wherein C is a natural number and is more than or equal to 2 and less than or equal to 36; the synchronisation teeth (301) of each cone (3) mesh with the synchronisation teeth (301) of an adjacent cone (3).

2. A simultaneous rolling-cutter cone crushing unit according to claim 1, characterised in that the angle of each bearing shaft (2) to the shank (1) is not all equal, and that the angle of each bearing shaft (2) to the centre line of the shank (1) is in the range 90 ° to 175 °.

3. The synchronous rolling-cutter cone crushing unit according to claim 1, wherein the synchronizing teeth (301) comprise a core and a hardened protective layer coating the core.

4. The simultaneous rolling cutter crushing unit of claim 3 wherein the hardness of the core is HRC38-42 in Rockwell hardness and the hardness of the hardened protective layer is HRA 80-92 in Rockwell hardness.

5. The unit according to claim 1, wherein the top teeth (302) are made of cemented carbide.

6. The unit of claim 1, wherein the outer surface of the top tooth (302) is made of cemented carbide and the inner surface of the top tooth is made of artificial polycrystalline diamond.

7. A synchronous rolling-cutter crushing unit according to claim 1, wherein the shank (1) is provided with a mounting hole (4).

8. The synchronous roller cone crushing unit according to claim 1, wherein a is 2, B is 14, and C is 12, wherein one bearing shaft (2) has an angle α with the centerline of the shank (1), the other bearing shaft (2) has an angle β with the centerline of the shank (1), and α β is 126 °, the core hardness of the synchronizing tooth (301) is rockwell HRC42, and the hardness of the hardened protective layer is rockwell HRA 83.

9. A barrel drill, characterized by comprising a barrel (5), wherein a plurality of mounting seats (6) are uniformly arranged at the front end of the barrel (5) along the circumferential direction, and each mounting seat (6) is provided with a synchronous rolling cutter crushing unit according to any one of claims 1 to 8.