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CN-224228613-U - Combined mining roller bit with chip grooves

CN224228613UCN 224228613 UCN224228613 UCN 224228613UCN-224228613-U

Abstract

The utility model relates to the technical field of tooth drill bits, in particular to a combined mining roller bit with chip grooves, which comprises a palm seat, wherein a plurality of groups of roller cones are circumferentially arranged at the top of the palm seat, a plurality of chip grooves are circumferentially arranged around the palm seat, the roller cones are connected with the palm seat through a detachable combined rotating structure, the detachable combined rotating structure comprises a positioning chuck and a plurality of L-shaped arc clamping seats, an L-shaped annular groove is formed in the bottom of each roller cone, the L-shaped arc clamping seats can be circumferentially clamped at the inner side of the L-shaped annular groove and are connected with the positioning chuck through bolts, the positioning chuck can be fixedly mounted on the palm seat through bolts together, and a sealing mechanism is arranged between the outer side of each L-shaped annular groove and the positioning chuck as well as the L-shaped arc clamping seats.

Inventors

  • ZHANG ZHANKUI
  • LI CHUNYAN

Assignees

  • 沧州格锐特钻头有限公司

Dates

Publication Date
20260512
Application Date
20250623

Claims (6)

  1. 1. A combined mining roller bit with chip grooves is characterized by comprising a palm seat (1) with a plurality of groups of roller cones (4) circumferentially arranged at the top and a plurality of chip grooves (3) circumferentially arranged at the periphery, wherein the roller cones (4) are connected with the palm seat (1) through a detachable combined rotating structure, the detachable combined rotating structure comprises a positioning chuck (9) and a plurality of L-shaped arc clamping seats (7), an L-shaped annular groove (6) is formed in the bottom of the roller cones (4), the L-shaped arc clamping seats (7) can be circumferentially clamped on the inner side of the L-shaped annular groove (6) and are connected with the positioning chuck (9) through bolts, the positioning chuck (9) can be fixedly mounted on the palm seat (1) through the bolts, and a sealing mechanism is arranged between the outer side of the L-shaped annular groove (6) and the positioning chuck (9) and the L-shaped arc clamping seats (7).
  2. 2. The combined mining roller bit with junk slots of claim 1, wherein a plurality of annular tooth layers are sequentially arranged on the roller cone (4) from bottom to top, concave rings are arranged between two adjacent tooth layers, and each annular tooth layer is circumferentially and fixedly arranged on teeth (5) on the roller cone (4).
  3. 3. The combined mining roller bit with the chip grooves according to claim 2, wherein the sealing mechanism comprises a sliding sleeve (10) in sealing sliding fit with the outer side of the L-shaped annular groove (6), a clamping edge is arranged at the middle lower part of the inner side of the sliding sleeve (10), a spring (11) with the top extending out of the top end face of the sliding sleeve (10) is fixedly arranged at the top of the clamping edge, the sliding sleeve (10) and the spring (11) can be integrally covered on the outer sides of the L-shaped arc clamping seats (7), the top of the spring (11) can be abutted against the inner top of the L-shaped annular groove (6), and the bottom of the sliding sleeve (10) is in sealing contact with the positioning chuck (9) and the L-shaped arc clamping seats (7).
  4. 4. The combined mining roller bit with chip grooves according to claim 3, wherein the top of the positioning chuck (9) is uniformly distributed with embedded grooves which can be embedded into the bottom of the L-shaped arc clamping seat (7) in the circumferential direction.
  5. 5. The combined mining roller bit with the junk slots, as set forth in claim 4, characterized in that a plurality of mounting tables (12) which are obliquely arranged towards the inner side are circumferentially arranged at the top of the palm seat (1), and the positioning chuck (9) is in threaded connection with the mounting tables (12).
  6. 6. The combined mining roller bit with the junk slots, as set forth in claim 5, characterized in that a screw (2) is fixedly installed at the bottom of the palm seat (1), and the screw (2) and the junk slots (3) have the same spiral direction.

Description

Combined mining roller bit with chip grooves Technical Field The utility model relates to the technical field of tooth drill bits, in particular to a combined mining roller bit with chip grooves. Background The application of tooth drill bit in mining is mainly characterized by its high-efficiency and stable drilling performance and capability of adapting to various geological conditions. The tooth drill bit is mainly used for the borehole rock drilling operation of surface mines, particularly in large-scale surface mines, the drilling diameter is usually more than 200mm, the drilling aperture is large, and the efficiency is high. The tooth drill bit has high perforation efficiency and low operation cost, can adapt to mineral rock perforation operation with various hardness, is widely used in strip mines in all countries of the world, and is searched for a patent with publication number CN212105751U to disclose a combined tooth drill bit with chip removal grooves, which comprises a connecting rod, a mounting screw rod, a gasket, a clamping block, a palm seat, a mounting groove, a tooth palm, teeth, chip removal grooves, reinforcing ribs, a fixing screw rod, a connecting shaft, a sealing block and a protective cover. The combined mine bit with the chip groove has the advantages that three chip grooves are formed in the side face of the palm seat in a spiral downward mode, chips can rotate to the bottom of the chip groove along with the chip groove and are discharged, reinforcing ribs are fixed on two sides of the chip groove, strength of the palm seat can be enhanced, breakage of the palm seat due to strength reduction caused by abnormal abrasion is effectively avoided, gaskets are clamped between connecting rods and the palm seat and can deform, vibration can be effectively absorbed, separation between the connecting rods and the palm seat caused by vibration in the use process is prevented, the palm can be freely detached from the palm seat and the palm seat can be freely detached from the mounting screw, parts can be independently maintained and replaced during maintenance of the whole bit, maintenance is simpler and quicker, although each tooth is convenient to replace, the tooth is connected with the palm through the connecting shaft, and a protective cover is arranged on the outer side of the connecting shaft, and is easy to break in the use process. Disclosure of utility model (One) solving the technical problems Aiming at the defects of the prior art, the utility model provides the combined mining roller bit with the chip grooves, which is convenient to disassemble, ensures the stability of the whole structure and prolongs the service life of the roller bit. (II) technical scheme The combined mining roller bit with the chip grooves comprises a palm seat, a plurality of groups of roller cones are circumferentially arranged at the top of the palm seat, the plurality of chip grooves are circumferentially arranged at the periphery of the palm seat, the roller cones are connected with the palm seat through a detachable combined rotating structure, the detachable combined rotating structure comprises a positioning chuck and a plurality of L-shaped arc clamping seats, an L-shaped annular groove is formed in the bottom of the roller cones, the plurality of L-shaped arc clamping seats can be circumferentially clamped on the inner side of the L-shaped annular groove and connected with the positioning chuck through bolts, the positioning chuck can be fixedly mounted on the palm seat through bolts, and a sealing mechanism is arranged between the outer side of the L-shaped annular groove and the positioning chuck as well as between the positioning chuck and the plurality of L-shaped arc clamping seats. Preferably, the cone is provided with a plurality of annular tooth layers from bottom to top in sequence, a concave ring is arranged between two adjacent tooth layers, and each annular tooth layer is circumferentially and fixedly arranged on teeth on the cone. Preferably, the sealing mechanism comprises a sliding sleeve in sealing sliding fit with the outer side of the L-shaped annular groove, a clamping edge is arranged at the middle lower part of the inner side of the sliding sleeve, a spring with the top extending out of the top end face of the sliding sleeve is fixedly arranged at the top of the clamping edge, the sliding sleeve and the spring can be integrally covered on the outer sides of a plurality of L-shaped arc clamping seats, the top of the spring can be abutted to the inner top of the L-shaped annular groove, and the bottom of the sliding sleeve is in sealing contact with the positioning chuck and a plurality of L-shaped arc clamping seats. Preferably, the top circumference equipartition of location chuck has seted up the embedded groove of the bottom of embedded L type arc cassette. Preferably, a plurality of mounting tables which are obliquely arranged inwards are circumferentially arranged at the to