CN219101220U

CN219101220U - Hob shell structure with detachable and replaceable cutter teeth

Info

Publication number: CN219101220U
Application number: CN202223235494.0U
Authority: CN
Inventors: 王宗金; 杨光; 冯金亮; 汪青仓; 王文忠; 付新鹏; 亓燕秋; 刘伟军; 丁杨龙; 高梅; 周伟; 陈亮; 邓书宏; 张景钰; 吴刚
Original assignee: Shaanxi Yanchang Petroleum Yulin Kekegai Coal Industry Co ltd; China Coal Special Drilling Engineering Co ltd; China Coal No 3 Construction Group Co Ltd
Current assignee: Shaanxi Yanchang Petroleum Yulin Kekegai Coal Industry Co ltd; China Coal Special Drilling Engineering Co ltd; China Coal No 3 Construction Group Co Ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-05-30
Anticipated expiration: 2032-12-01

Abstract

The utility model discloses a hob shell structure with detachable and replaceable hob teeth, which comprises a hob shell body, hob teeth, wedge-shaped compression blocks and set screws, wherein the hob teeth, the wedge-shaped compression blocks and the set screws are arranged on the hob shell body; the hob tooth comprises a tooth edge and a tooth seat, the tooth seat is arranged in the mounting groove, and the tooth seat is fixedly arranged in the mounting groove through a wedge-shaped compression block; the wedge-shaped compression block is connected with the hob shell body through a set screw. The hob shell structure with the detachable and replaceable hob teeth is simple to detach and mount, the overall utilization rate of the hob can be improved, when the hob teeth are damaged and the hob teeth need to be replaced, the hob teeth can be detached and replaced by taking out the set screws in an elastic mode, the waste phenomenon that the whole hob is scrapped as long as the hob teeth are worn is avoided, the construction cost is greatly reduced, and the project construction economic benefit is improved.

Description

Hob shell structure with detachable and replaceable cutter teeth

Technical Field

The utility model relates to the field of drill cutters for drilling construction, in particular to a hob shell structure with detachable and replaceable cutter teeth.

Background

In the construction of the drilling method, the hob is a cutter which is arranged on a drill bit and used for breaking rock, the traditional hob cutter teeth and the hob shell are integrated, the cutter teeth are machined on a hob shell parent body in a mechanical cutting mode, the hob is composed of a hob shaft, a seal, a bearing, the hob shell and other parts, the cost proportion of the hob shaft, the bearing and the seal system in the whole hob is large, and as the traditional hob cutter teeth and the hob shell are integrated, the hob cutter teeth are damaged, no matter whether the hob shaft, the seal, the bearing and other parts are damaged, the whole hob cutter is scrapped, for a large-diameter drill bit, the hob cutter is damaged by 60 times or more, the hob cutter teeth are almost damaged by taking off, so that the whole drill bit hob is completely replaced, the hob cutter teeth damaged by the cutter teeth is treated by waste iron, and the great waste is caused.

Disclosure of Invention

The utility model mainly aims to provide a hob cutter body structure with detachable and replaceable cutter teeth, and aims to solve the defect that a drill hob cannot be independently replaced for the damaged cutter teeth.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the hob shell structure comprises a hob shell body, hob teeth, a compression block and a set screw, wherein the hob teeth, the compression block and the set screw are arranged on the hob shell body; the hob tooth comprises a tooth edge and a tooth seat, the tooth seat is arranged in the mounting groove, and the tooth seat is fixedly arranged in the mounting groove through a wedge-shaped compression block; the wedge-shaped compression block is connected with the hob shell body through a set screw.

Further, the compaction block is provided with a penetrating installation hole, and the compaction block is fixed by penetrating the installation hole through a set screw and being in threaded connection with a threaded hole on the hob shell body.

Further, the compressing block is a wedge-shaped compressing block, and one surface, which is attached to the compressing block, of the base of the hob tooth is an inclined surface which is matched with the wedge-shaped compressing block.

Further, the threaded hole comprises a unthreaded hole part and a threaded part, and the unthreaded hole part and the threaded part are consistent in aperture.

Further, the compaction block is composed of a rigid part and an elastic part, and the elastic part is positioned at the bottom of the compaction block.

Further, the mounting hole of the compressing block is of a counter bore structure, a threaded hole is formed in the top of the counter bore, and when the compressing block is fixed to the hob shell body through a set screw, the counter bore is in threaded sealing with the top of the counter bore through a threaded sealing plug.

The beneficial effects of the utility model are as follows: the hob shell structure adopts the detachable design of hob cutter teeth and hob shell body, the tightening force of the wedge-shaped compression block on the hob cutter teeth is changed by adjusting the tightness of the high-strength screw, when the hob is damaged only by the cutter teeth, the damaged cutter teeth are conveniently and quickly replaced, the whole hob is prevented from being replaced, the utilization rate of the whole hob is greatly improved, the construction cost is greatly reduced, the project construction benefit is improved, and the aims of green, environment-friendly, energy-saving and low-cost construction are fulfilled.

Drawings

FIG. 1 is a front view of a hob housing structure with removable and replaceable cutter teeth according to the present utility model;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a view showing the construction of the mounting groove of the present utility model;

FIG. 4 is a view of the configuration of the hob tooth and set screw of the present utility model;

FIG. 5 is a schematic cross-sectional view of a compact block according to the present utility model.

Reference numerals illustrate: 1. a hob housing body; 2. hob teeth; 3. a compaction block; 4. a set screw; 5. mounting grooves, 6 and threaded holes; 7. and (5) mounting holes.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. Embodiments and features of embodiments in this application may be combined with each other without conflict. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

See fig. 1 to 5.

The utility model discloses a hob shell structure with detachable and replaceable hob teeth, which comprises a hob shell body, a plurality of hob teeth, a compression block and a set screw, wherein the hob teeth, the compression block and the set screw are arranged on the hob shell body. The hob shell body surface is equipped with evenly distributed along circumference and can't install the groove, hob tooth is fixed through the compact heap to in the mounting groove on the periphery of hob shell body is evenly installed to detachable mode, the compact heap passes through holding screw with hob shell body and is connected, whole simple structure, simple to operate. When the detachable cutter teeth are damaged in the use process, the detachable cutter teeth can be conveniently and quickly disassembled, assembled and replaced, the utilization rate of the whole hob is improved, and the construction cost is greatly reduced.

In one embodiment, the hob tooth comprises a tooth edge and a tooth seat, the mounting groove is of a square groove structure, and the tooth seat is arranged in the mounting groove and is contacted with the wall of the bottom of the mounting groove. The side surface of the tooth holder is an inclined surface, the compression block is arranged in the mounting groove, the compression block is a wedge-shaped compression block, the inclined surface of the compression block is matched with the inclined surface of the tooth holder, and hob teeth are tightly fixed in the mounting groove of the hob shell body. The wedge-shaped compression block has large contact area with the inclined plane of the hob tooth, and the connection is reliable and stable.

In one embodiment, the compaction block is provided with a through mounting hole, and the compaction block is fixed by passing through the mounting hole through a set screw and being in threaded connection with a threaded hole on the hob housing body. The magnitude of the pressing force of the wedge-shaped pressing block on the hob teeth is changed by adjusting the tightness of the high-strength screw.

In one embodiment, the compression block is comprised of a rigid portion and a resilient portion, the resilient portion being located at the bottom of the compression block. The elastic part does not generate plastic deformation under the action of external force, is tightly contacted with the bottom wall of the mounting groove, and is not easy to loosen and resistant to use.

In an embodiment, the threaded hole comprises a unthreaded hole part and a threaded part, the diameters of the unthreaded hole part and the threaded part are consistent, and the set screw penetrates through the counter bore and the threaded hole unthreaded hole to be connected with the threaded part, so that quick installation and disassembly are realized.

In an embodiment, the mounting hole of compact heap is the counter bore structure, and the top of counter bore is equipped with the screw hole, works as the compact heap passes through the holding screw to be fixed on the hobbing cutter casing body, the counter bore department is sealed with counter bore top screw thread through a screw thread sealing plug, makes the holding screw can not expose outside, guarantees can not contact with the foreign object in the course of the work, has increased the stability that compact heap and hobbing cutter casing body are connected.

The hob has the advantages of simple structure, reasonable design and convenient disassembly and assembly, and when a certain hob tooth is damaged to affect the use, the corresponding hob tooth is replaced, the service life of the hob is prolonged, and the hob has good practicability.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a hob shell structure of removable change sword tooth, includes hob shell body, hob sword tooth and compact heap, its characterized in that: the outer surface of the hob shell body is provided with a plurality of uniformly distributed mounting grooves along the circumferential direction of the hob shell body, the bottom wall of the mounting grooves is provided with threaded holes, hob teeth comprise tooth edges and tooth seats, and the tooth seats are arranged in the mounting grooves; the compressing block is in threaded fixation with a threaded hole in the bottom wall of the mounting groove, and the hob cutter teeth are tightly attached to the tooth seats of the hob cutter teeth through the compressing block and are fixed in the mounting groove.

2. The hob housing structure with removable and replaceable cutter teeth according to claim 1, wherein the compaction block is provided with a through mounting hole, and the compaction block is fixed by screwing a set screw through the mounting hole and a threaded hole in the hob housing body.

3. The hob shell structure with detachable and replaceable hob teeth according to claim 1, wherein the pressing block is a wedge-shaped pressing block, and a surface, which is attached to the pressing block, of the base of the hob tooth is an inclined surface which is matched with the wedge-shaped pressing block.

4. The hob housing structure with removable and replaceable cutter teeth according to claim 3, wherein the threaded hole includes a smooth hole portion and a threaded portion, and the smooth hole portion and the threaded portion have the same aperture.

5. The hob housing structure with removable and replaceable cutter teeth according to claim 1, wherein the pressing block is composed of a rigid portion and an elastic portion, and the elastic portion is located at the bottom of the pressing block.

6. The hob housing structure with detachable and replaceable hob teeth according to claim 1, wherein the mounting hole of the compaction block is a counter bore structure, a threaded hole is arranged at the top of the counter bore, and when the compaction block is fixed on the hob housing body through a set screw, the counter bore is in threaded sealing with the top of the counter bore through a threaded sealing plug.