A synchronous rolling cutter crushing unit and barrel drill

Abstract

The application discloses a synchronous gear-rolling wheel breaking unit, which comprises a handle, the upper end of the handle is uniformly provided with A bearing shafts in the circumferential direction, wherein A=2, 4 or 6; each bearing shaft is provided with an umbrella-shaped gear wheel through a bearing; the outer surface of the root of each gear wheel is uniformly provided with B synchronous teeth in the circumferential direction, wherein B is a natural number and 3<=B<=20; the outer surface of the top end of each gear wheel is provided with C top teeth, wherein C is a natural number and 2<=C<=36; the synchronous teeth of each gear wheel are engaged with the synchronous teeth of the adjacent gear wheel. The application further discloses a cylinder drill, which comprises a cylinder body, and the front end of the cylinder body is uniformly provided with a plurality of synchronous gear-rolling wheel breaking units in the circumferential direction. The application has the following beneficial effects: 1. all the gear wheels rotate in the same direction under the driving of the engaged synchronous teeth; 2. when one gear wheel rotates discontinuously, the gear wheel engaged with the gear wheel can help the gear wheel rotate; 3. the high hardness and high wear resistance of the top teeth ensure the consistency of the size of the breaking ring surface.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rock breaking tools, in particular to a synchronous rolling cutting cone breaking unit and a cylinder drill. BACKGROUND

[0002] The application of rotary drilling technology in pile foundation engineering promotes the use of cone cylinder drills. However, the rock breaking units used on the cone cylinder drills are mostly cone-palm pieces composed of one cone and one cone palm of a toothed cone drill bit or modified combinations of similar structures. The biggest disadvantage of this type of cone-palm piece is: 1. The accidental jamming or broken teeth of the cone will cause uneven stress and affect the consistency of the broken ring surface; 2. The welding precision and welding temperature of the cone-palm piece positioned on the thick-walled cylinder are difficult to control, resulting in frequent abnormal damage of the cone-palm piece, low general service life and high engineering cost; 3. Each time the cone-palm piece is replaced, the old cone-palm piece needs to be cut off by oxyacetylene flame, which continuously reduces the roundness of the cylinder drill, the installation position of the new cone-palm piece is extremely non-standard, the welding precision is continuously reduced, the welding difficulty and intensity are increased, the damage to the performance of the cutting unit is gradually increased, and the service life is reduced; 4. The on-site replacement of the cone-palm piece is complex, the precision after replacement cannot be guaranteed, and the service life is reduced.

[0003] Therefore, how to solve the above problems of rock breaking units in the working conditions is a technical problem that needs to be solved by the technical personnel in the field at present. SUMMARY

[0004] To solve the above technical problems, the main purpose of the present application is to provide a synchronous rolling cutting cone breaking unit which can prevent the accidental jamming of the cone from affecting the consistency of the broken ring surface. The present application also provides a cylinder drill installed with the synchronous rolling cutting cone breaking unit.

[0005] In order to achieve the above purpose, the present application adopts the following technical solutions.

[0006] (1) A synchronous rolling cutting cone breaking unit, comprising a handle, the upper end of the handle is uniformly provided with A bearing shafts in the circumferential direction, wherein A = 2, 4 or 6; each bearing shaft is provided with a cone in the form of an umbrella through a bearing; the outer surface of the root of each cone is uniformly provided with B synchronous teeth in the circumferential direction, wherein B is a natural number and 3 ≤ B ≤ 20; the outer surface of the top end of each cone is provided with C top teeth, wherein C is a natural number and 2 ≤ C ≤ 36; the synchronous teeth of each cone are engaged with the synchronous teeth of the adjacent cone.

[0007] Further, the included angle between each bearing shaft and the handle is not all equal, and the included angle between each bearing shaft and the center line of the handle ranges from 90° to 175°.

[0008] Further, the synchronous tooth comprises a core and a hardened protective layer covering the core.

[0009] Further, the hardness of the core is HRC 38-42, and the hardness of the hardened protective layer is HRA 80-92.

[0010] Further, the top tooth is made of hard alloy.

[0011] Further, the outer surface of the top tooth is made of hard alloy, and the inner part is made of artificial polycrystalline diamond.

[0012] Further, the shank is provided with a mounting hole.

[0013] Further, A=2, B=14, C=12, the angle α between one bearing shaft and the center line of the shank, the angle β between the other bearing shaft and the center line of the shank, and α=β=126°, the hardness of the core of the synchronous tooth is HRC 42, and the hardness of the hardened protective layer is HRA 83.

[0014] (II) A cylinder drill comprises a cylinder body, and a plurality of mounting seats are uniformly arranged on the front end of the cylinder body in the circumferential direction, and each mounting seat is provided with a synchronous rolling and cutting tooth breaker unit.

[0015] Compared with the prior art, the technical scheme has the following beneficial effects: 1. All the rollers rotate in the same direction under the driving of the synchronous teeth in meshing with each other, and the effect of impact and sliding shear on the working surface is formed to break the rock; 2. In the later stage of use, when one roller rotates discontinuously, the roller in meshing with the roller can help the rotation of the roller to prevent the accidental jamming of the roller and improve the rock breaking efficiency; 3. The high hardness and high wear resistance of the top tooth embedded on the top ensure the long-term consistency of the size of the breaking ring surface. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 It is a three-dimensional schematic view of an embodiment of the synchronous rolling and cutting tooth breaker unit of the present application;

[0018] Figure 2 It is a three-dimensional front view of an embodiment of the synchronous rolling and cutting tooth breaker unit of the present application;

[0019] Figure 3A schematic diagram of a synchronous gear rolling cutting breaker unit according to an embodiment of the present application;

[0020] Figure 4 A schematic diagram of a barrel drill with a synchronous gear rolling cutting breaker unit;

[0021] In the above figures:

[0022] 1 handle; 2 bearing shaft; 3 gear; 301 synchronous tooth; 302 top tooth; 4 mounting hole; 5 barrel; 6 mounting seat. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0024] In the following description, specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways other than those described herein, and skilled in the art can make similar extensions without departing from the scope of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0025] In the first aspect, with reference to Figure 1 , Figure 2 and Figure 3 , a synchronous gear rolling cutting breaker unit, comprising a handle 1, the upper end of the handle 1 is uniformly provided with A bearing shafts 2 in the circumferential direction, wherein A = 2, 4 or 6; each bearing shaft 2 is provided with an umbrella-shaped gear 3 through a bearing; the outer surface of the root of each gear 3 is uniformly provided with B synchronous teeth 301 in the circumferential direction, wherein B is a natural number and 3≤B≤20; the outer surface of the top end of each gear 3 is provided with C top teeth 302, wherein C is a natural number and 2≤C≤36; the synchronous teeth 301 of each gear 3 are engaged with the synchronous teeth 301 of the adjacent gear 3.

[0026] In the above embodiment, the gears 3 engaged with each other generate synchronous and same direction driving force, which forms the effect of impact and sliding shear rock breaking on the working surface, and at the same time in the later stage of use, when the rotation of one gear 3 is discontinuous, the gear 3 engaged with it can help it rotate, preventing accidental jamming of the gear 3 from causing eccentric wear, and improving the rock breaking efficiency. The gears 3 engaged with each other generate synchronous and same direction driving ability, improve the breaking efficiency, prolong the service life, reduce the number of hard alloy used, reduce the engineering cost, and the convenient replacement mode reduces the labor intensity and shortens the construction period.

[0027] Further, the angle between each bearing shaft 2 and the handle 1 is not equal, and the angle between each bearing shaft 2 and the center line of the handle 1 is in the range of 90°-175°.

[0028] Further, the synchronous tooth 301 comprises a core and a hardened protective layer covering the core.

[0029] Further, the hardness of the core is HRC 38-42, and the hardness of the hardened protective layer is HRA 80-92.

[0030] In the above embodiment, the synchronous tooth 301 has high hardness and high wear resistance on the surface, and the core has low hardness and high toughness, which improves the impact resistance of the synchronous gear cutting roller rock breaking unit and the bending resistance of the tooth, and the tooth is not easy to be broken early due to torsion in construction, thereby greatly reducing the service life. The rollers meshing with each other have synchronous and same direction driving capability, which improves the crushing efficiency and prolongs the service life.

[0031] Further, the top tooth 302 is made of hard alloy. Alternatively, the outer surface of the top tooth 302 is made of hard alloy, and the inner part is made of artificial polycrystalline diamond. The top tooth 302 embedded on the top has high hardness and high wear resistance, which ensures the long-term consistency of the size of the crushing ring surface.

[0032] Reference Figure 1 , Figure 2 and Figure 3 , as a specific embodiment of the present application, wherein the number of bearing shafts 2 A=2, the number of synchronous teeth 301 B=14, and the number of top teeth 302 C=12, one of the bearing shafts 2 has an angle α with the center line of the handle 1, the other bearing shaft 2 has an angle β with the center line of the handle 1, and α=β=126°, the hardness of the core of the synchronous tooth 301 is HRC 42, and the hardness of the hardened protective layer is HRA 83.

[0033] In a second aspect, a cylinder drill comprises a cylinder body 5, a plurality of mounting seats 6 are uniformly arranged on the front end of the cylinder body 5 in the circumferential direction, and a synchronous gear cutting roller breaking unit is mounted on each mounting seat 6.

[0034] A plurality of synchronous gear cutting roller breaking units are uniformly arranged on the front end of the cylinder body 5, and the rollers 3 meshing with each other in each synchronous gear cutting roller breaking unit have synchronous and same direction driving capability, which improves the crushing efficiency and prolongs the service life. At the same time, the reduction of the number of hard alloy reduces the engineering cost, and the convenient replacement reduces the labor intensity and shortens the construction period.

[0035] Although the present application has been described in detail in the specification and specific embodiments, some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of the present application without departing from the present application are within the scope of the present application.

Claims

1. A synchronous rolling cutter crushing unit, characterized in that: The invention comprises a shank (1), wherein the upper end of the shank (1) is uniformly provided with A bearing shafts (2) in the circumferential direction, wherein A=2, 4 or 6, an umbrella-shaped tooth wheel (3) is mounted on each bearing shaft (2) through a bearing, and the outer surface of the root of each tooth wheel (3) is uniformly provided with B synchronous teeth (301) in the circumferential direction, wherein 3≤B≤20, and the outer surface of the top end of each tooth wheel (3) is provided with C top teeth (302), wherein 2≤C≤36, and the synchronous teeth (301) of each tooth wheel (3) are meshed with the synchronous teeth (301) of the adjacent tooth wheel (3), and the meshing tooth wheels (3) are driven synchronously and in the same direction, and the angles between each bearing shaft (2) and the shank (1) are not all equal, and each tooth wheel (3) is uniformly provided with B synchronous teeth (301) in the circumferential direction, wherein 3≤B≤20, and the outer surface of the top end of each tooth wheel (3) is provided with C top teeth (302) in the circumferential direction, wherein 2≤C≤36, and the synchronous teeth (301) of each tooth wheel (3) are meshed with the synchronous teeth (301) of the adjacent tooth wheel (3), and the meshing tooth wheels (3) are driven synchronously and in the same direction, and the angles between each bearing shaft (2) and the shank (1) are not all equal, and each tooth wheel (3) is uniformly provided with B synchronous teeth (301) in the circumferential direction, wherein 3≤B≤20, and each tooth wheel (3) is uniformly provided with C top teeth (302) in the circumferential direction, and each tooth wheel (3) is uniformly provided with C top teeth (302) in the circumferential direction, and each tooth wheel (3) is uniformly provided with C top teeth (302 The angle between the root bearing shaft (2) and the center line of the shank (1) ranges from 90° to 175°; each tooth wheel (3) is driven by mutually meshing synchronous teeth (301) to rotate synchronously in one direction, forming an impact and sliding shearing crushing rock on the working surface, the synchronous teeth (301) comprising a core and a hardened protective layer covering the outside of the core, the hardness of the core is Rockwell hardness HRC38-42, and the hardness of the hardened protective layer is Rockwell hardness HRA80-92; the material of the top tooth (302) is cemented carbide; the shank (1) is provided with a mounting hole (4); in the later stage of use, when one tooth wheel (3) rotates discontinuously, the tooth wheel (3) meshing with it helps it rotate.

2. The synchronous rolling cutter crushing unit according to claim 1, characterized in that: The outer surface material of the top teeth (302) is hard alloy, and the inner material is artificial polycrystalline diamond.

3. The synchronous rolling cutter crushing unit according to claim 1, characterized in that: A=2, B=14, C=12, an included angle α between one bearing shaft (2) and the center line of the shank (1), an included angle β between the other bearing shaft (2) and the center line of the shank (1), and α=β=126°, a core hardness of the synchronous tooth (301) is Rockwell hardness HRC42, and a hardness of the hardened protective layer is Rockwell hardness HRA83.

4. A barrel drill, characterized in that: The invention comprises a cylinder (5), a front end of which is evenly provided with a plurality of mounting seats (6) along the circumferential direction, and each mounting seat (6) is mounted with a synchronous rolling cutter crushing unit according to any one of claims 1 to 3.

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