Combined mining roller bit with chip grooves

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, a plurality of groups of cones are circumferentially arranged at the top of the palm seat, a plurality of chip grooves are formed in the periphery of the palm seat, and the 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 ring groove is formed in the bottom of the cone, the plurality of L-shaped arc clamping seats can be circumferentially and annularly clamped on the inner side of the L-shaped ring groove and are connected with the positioning chuck through bolts, and the positioning chuck can be fixedly mounted on the palm seat together through bolts; sealing mechanisms are arranged among the outer side of the L-shaped annular groove, the positioning chuck and the L-shaped arc clamping seats. The detachable clamping plate is convenient to detach, meanwhile, the stability of the whole structure is guaranteed, and the service life of the detachable clamping plate is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of toothed drill bit technology, specifically a combined mining roller cone drill bit with chip removal grooves. Background Technology

[0002] The application of toothed drill bits in mining is mainly reflected in their high efficiency, stable drilling performance, and ability to adapt to various geological conditions. Toothed drill bits are primarily used for blast hole drilling in open-pit mines, especially in large open-pit mines where the drilling diameter is typically over 200mm, resulting in large-diameter and high-efficiency drilling. Toothed drill bits offer high perforation efficiency and low operating costs, and can adapt to drilling operations in rocks and ores of varying hardness. Therefore, they are widely used in open-pit mines worldwide. A search reveals that patent publication number CN212105751U discloses a combined toothed drill bit with a chip removal groove, including a connecting rod, mounting screw, washer, locking block, palm base, mounting groove, toothed palm, teeth, chip removal groove, reinforcing rib, fixing screw, connecting shaft, sealing block, and protective cover. The beneficial effects of this utility model are as follows: There are three chip removal grooves, which are spirally distributed downwards on the side of the palm base. The chips can rotate with the chip removal grooves to the bottom of the chip removal grooves and be discharged. The chip removal grooves are fixed with reinforcing ribs on both sides, which can enhance the strength of the palm base and effectively prevent the palm base from breaking due to abnormal wear. The gasket is stuck between the connecting rod and the palm base and can be deformed, which can effectively absorb vibration and prevent the connecting rod and the palm base from separating due to vibration during use. The toothed palm can be freely removed from the palm base and the palm base can be freely removed from the mounting screw. The entire drill bit can be repaired and replaced individually during maintenance, making maintenance simpler and faster. Although it is easy to replace each tooth, the teeth are connected to the toothed palm through the connecting shaft. Although a protective cover is set on the outside of the connecting shaft, it is still easy to break during use. Therefore, a combined mining roller cone drill bit with chip removal grooves is designed to facilitate disassembly while ensuring the stability of the overall structure and extending its service life. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a combined mining roller cone drill bit with a chip removal groove, which facilitates disassembly while ensuring the stability of the overall structure and extending its service life.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a combined mining roller cone drill bit with chip removal grooves, comprising a palm base with multiple sets of roller cones arranged circumferentially on the top and multiple chip removal grooves on the surrounding area. The roller cones and the palm base are connected by a detachable and rotatable assembly structure. The detachable and rotatable assembly structure includes a positioning chuck and multiple L-shaped arc chucks. An L-shaped annular groove is provided at the bottom of the roller cones. The multiple L-shaped arc chucks can be circumferentially engaged within the inner side of the L-shaped annular groove and connected to the positioning chuck by bolts. The positioning chuck can be fixedly installed on the palm base together with the roller cone by bolts. A sealing mechanism is provided between the outer side of the L-shaped annular groove and the positioning chuck and the multiple L-shaped arc chucks.

[0007] Preferably, the toothed wheel is provided with multiple ring tooth layers from bottom to top, and a concave ring is provided between two adjacent tooth layers. Each ring tooth layer is circumferentially fixed to the teeth on the toothed wheel.

[0008] Preferably, the sealing mechanism includes a sliding sleeve that is in sealing and sliding engagement with the outer side of the L-shaped annular groove. The lower inner part of the sliding sleeve is provided with a retaining edge. A spring with its top extending out of the top surface of the sliding sleeve is fixedly installed on the top of the retaining edge. The sliding sleeve and the spring as a whole can cover the outer side of multiple L-shaped arc-shaped retaining seats, and the top of the spring can abut against the inner top of the L-shaped annular groove. The bottom of the sliding sleeve is in sealing contact with the positioning chuck and the multiple L-shaped arc-shaped retaining seats.

[0009] Preferably, the top circumference of the positioning chuck is provided with recessed grooves at the bottom of the L-shaped arc chuck seat that can be embedded therein.

[0010] Preferably, the top circumference of the palm base is provided with a plurality of mounting platforms that are inclined inward, and the positioning chuck is threadedly connected to the mounting platforms.

[0011] Preferably, a screw is fixedly installed at the bottom of the palm base, and the screw and the chip removal groove have the same helical direction.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, this utility model provides a combined mining roller cone drill bit with chip removal grooves, which has the following beneficial effects:

[0014] This modular mining roller cone drill bit with chip removal grooves uses multiple L-shaped arc chucks to hook the L-shaped annular groove at the bottom of the roller cone and connect it to a positioning chuck for easy rotation and disassembly. A sealing mechanism prevents gravel from entering the L-shaped annular groove during operation, ensuring structural stability at the groove. In cases where stones get stuck on ice, the combination of multiple L-shaped arc chucks and the L-shaped annular groove provides higher rotational stability than using a rotating shaft, reducing breakage and extending service life. The multiple chip removal grooves facilitate chip removal during operation, and the sealing mechanism prevents chips from getting stuck in the L-shaped annular groove, ensuring normal operation. This modular mining roller cone drill bit with chip removal grooves is easy to disassemble while maintaining overall structural stability and extending its service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a structural schematic diagram of the present invention from other perspectives;

[0017] Figure 3 This is a schematic diagram of the structure of the palm base, screw and chip removal groove of this utility model;

[0018] Figure 4 This is a schematic diagram showing the disassembled structure of the positioning chuck, L-shaped arc seat, and toothed wheel of this utility model;

[0019] Figure 5 This is an exploded structural diagram of the positioning chuck, L-shaped arc seat, and toothed gear assembly of this utility model from another perspective.

[0020] Figure 6 This is a partial cross-sectional structural diagram of the positioning chuck, L-shaped arc seat, and toothed wheel assembly of this utility model;

[0021] Figure 7 This is a partial cross-sectional view of the positioning chuck, L-shaped arc seat, and toothed wheel assembly of this utility model from another perspective.

[0022] The following are labels in the attached diagram: 1. Hand seat; 2. Screw; 3. Chip removal groove; 4. Gear; 5. Tooth; 6. L-shaped annular groove; 7. L-shaped arc seat; 8. Universal ball; 9. Positioning chuck; 10. Sliding sleeve; 11. Spring; 12. Mounting platform. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example:

[0025] Please see Figure 1-7 A combined mining roller cone drill bit with chip removal grooves includes a base 1 with multiple roller cones 4 arranged circumferentially on the top and multiple chip removal grooves 3 on the surrounding area. The roller cones 4 and the base 1 are connected by a detachable and rotatable structure, which includes a positioning chuck 9 and multiple L-shaped arc chucks 7. The bottom of the roller cones 4 is provided with an L-shaped annular groove 6. The multiple L-shaped arc chucks 7 can be circumferentially engaged with the inner side of the L-shaped annular groove 6 and are fixedly connected to the positioning chuck 9 by bolts. The positioning chuck 9 can be fixedly installed on the base 1 together with the positioning chuck 9 by bolts. A sealing mechanism is provided between the outer side of the L-shaped annular groove 6 and the positioning chuck 9 and the multiple L-shaped arc chucks 7. Furthermore, universal balls 8 are installed on the upper and side parts of the L-shaped arc chucks 7 that engage with the L-shaped annular groove 6 to ensure the stability of its rotation.

[0026] Specifically, the roller cone 4 has multiple ring tooth layers arranged from bottom to top, with a concave ring between two adjacent tooth layers. Each ring tooth layer is circumferentially fixed to the teeth 5 on the roller cone 4. The arrangement of multiple teeth 5 facilitates crushing during mining drilling when the roller cone 4 is rotating.

[0027] Specifically, the sealing mechanism includes a sliding sleeve 10 that slides and seals with the outer side of the L-shaped annular groove 6. The lower inner part of the sliding sleeve 10 is provided with a retaining edge, and a spring 11 that extends out of the top surface of the sliding sleeve 10 is fixedly installed on the top of the retaining edge. The sliding sleeve 10 and the spring 11 can cover the outer side of the multiple L-shaped arc-shaped retaining seats 7, and the top of the spring 11 can abut against the inner top of the L-shaped annular groove 6. The bottom of the sliding sleeve 10 is in sealing contact with the positioning chuck 9 and the multiple L-shaped arc-shaped retaining seats 7. Through the cooperation of the sliding sleeve 10 and the spring 11, a seal is easily formed between the outer side of the L-shaped annular groove 6 and the positioning chuck 9 and the multiple L-shaped arc-shaped retaining seats 7, preventing impurities from entering the L-shaped annular groove 6 and causing jamming, thus ensuring the stability of the rotation of the gear 4.

[0028] Specifically, the top of the positioning chuck 9 is evenly provided with recessed grooves at the bottom of the L-shaped arc chuck 7, which can be embedded in the grooves. Through multiple recessed grooves, multiple L-shaped arc chucks 7 can be circumferentially limited, thereby improving the circumferential distribution uniformity of multiple L-shaped arc chucks 7.

[0029] Specifically, the top circumference of the palm base 1 is provided with multiple mounting platforms 12 that are inclined inwards. The positioning chuck 9 is threadedly connected to the mounting platform 12. By setting the mounting platform 12, it is convenient to install the positioning chuck 9. Furthermore, the L-shaped arc chuck 7, the positioning chuck 9 and the mounting platform 12 are all provided with threaded holes of the same specification.

[0030] Specifically, a screw 2 is fixedly installed at the bottom of the palm base 1. The screw 2 and the chip removal groove 3 have the same spiral direction. The screw 2 facilitates the threaded installation of the combined mining tooth 5 drill bit with chip removal groove 3, which facilitates automatic chip removal during drilling.

[0031] In use, first insert the sliding sleeve 10 into the bottom of the toothed gear 4, then insert multiple L-shaped arc clasps 7 into the sliding sleeve 10 and attach them to the inside of the L-shaped annular groove 6. Then align the multiple L-shaped arc clasps 7 with the multiple positioning chucks 9 and press them against the mounting platform 12 on the top of the palm base 1. Then fix the L-shaped arc clasps 7, positioning chucks 9 and mounting platform 12 together with bolts. When disassembling, the operation can be reversed.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A combined mining roller cone drill bit with chip removal grooves, characterized in that: The palm base (1) includes multiple sets of toothed wheels (4) arranged circumferentially on the top and multiple chip removal grooves (3) on the four sides. The toothed wheels (4) and the palm base (1) are connected by a detachable and rotatable structure. The detachable and rotatable structure includes a positioning chuck (9) and multiple L-shaped arc chucks (7). The bottom of the toothed wheel (4) is provided with an L-shaped annular groove (6). The multiple L-shaped arc chucks (7) can be circumferentially clamped on the inner side of the L-shaped annular groove (6) and connected to the positioning chuck (9) by bolts. The positioning chuck (9) can be fixedly installed on the palm base (1) together by bolts. A sealing mechanism is provided between the outer side of the L-shaped annular groove (6) and the positioning chuck (9) and the multiple L-shaped arc chucks (7).

2. The combined mining rotary drill bit with chip removal groove according to claim 1, characterized in that: The toothed wheel (4) is provided with multiple ring tooth layers from bottom to top, and a concave ring is provided between two adjacent tooth layers. Each ring tooth layer is circumferentially fixed to the tooth (5) on the toothed wheel (4).

3. The combined mining roller cone drill bit with chip removal groove according to claim 2, characterized in that: The sealing mechanism includes a sliding sleeve (10) that is in sealing and sliding fit with the outer side of the L-shaped annular groove (6). The lower inner part of the sliding sleeve (10) is provided with a retaining edge. A spring (11) with its top extending out of the top surface of the sliding sleeve (10) is fixedly installed on the top of the retaining edge. The sliding sleeve (10) and the spring (11) can be covered on the outside of multiple L-shaped arc retaining seats (7) as a whole, and the top of the spring (11) can abut against the inner top of the L-shaped annular groove (6). The bottom of the sliding sleeve (10) is in sealing contact with the positioning chuck (9) and multiple L-shaped arc retaining seats (7).

4. The combined mining rotary drill bit with chip removal groove according to claim 3, characterized in that: The top circumference of the positioning chuck (9) is evenly provided with recessed grooves at the bottom of the L-shaped arc chuck seat (7) that can be embedded inside.

5. The combined mining rotary drill bit with chip removal groove according to claim 4, characterized in that: The top circumference of the palm base (1) is provided with a plurality of mounting platforms (12) that are inclined inward, and the positioning chuck (9) is threadedly connected to the mounting platforms (12).

6. The combined mining rotary drill bit with chip removal groove according to claim 5, characterized in that: A screw (2) is fixedly installed at the bottom of the palm base (1), and the screw (2) and the chip removal groove (3) have the same spiral direction.

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