CN217028795U - Hobbing cutter protects tooth structure - Google Patents
Hobbing cutter protects tooth structure Download PDFInfo
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- CN217028795U CN217028795U CN202123201025.2U CN202123201025U CN217028795U CN 217028795 U CN217028795 U CN 217028795U CN 202123201025 U CN202123201025 U CN 202123201025U CN 217028795 U CN217028795 U CN 217028795U
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Abstract
The utility model discloses a hob tooth protecting structure, and relates to the field of a reverse well hob. Its technical scheme main points include the gyro wheel base member, gyro wheel base member lateral wall be provided with the tooth's socket and with the boss of inlaying that the tooth's socket borders on, it inlays to be equipped with to inlay the boss lateral wall and is located tooth protection in the tooth's socket. The utility model can improve the wear resistance of the roller base body, reduce the wear of the roller base body and realize the durable fastening of the main conical teeth, thereby prolonging the service life of the hob.
Description
Technical Field
The utility model relates to the technical field of reverse well hobs, in particular to a hob abrasion-resistant structure.
Background
The reverse-well hob is mainly used for coal mine underground passages, mine ore-sliding holes or ventilation holes of underground mining engineering to crush rock strata by full caries surfaces. The working mode of the reverse well hob is mainly vertical lifting, and the reverse well hob can be obliquely pulled at a certain angle with the vertical direction. The reverse well hob consists of a roller and a roller, wherein the roller penetrates through an inner hole of the roller and is used for supporting the roller, and two ends of the roller are connected with saddles fixed on the cutterhead. The roller revolves around the drill rod along with the cutter head during working, and simultaneously rotates around the roller. The excircle of the roller is provided with annular grooves, the boss between the two annular grooves is inlaid with alloy teeth, and the roller crushes rocks by the alloy teeth in the rolling process. Standard conical bearings are arranged at two ends of an annular cavity between the roller and the rolling shaft, and an end thrust bearing is arranged in the middle. The roller and the steel ball can be directly arranged between the roller and the rolling shaft without adopting a standard bearing, the roller and the rolling shaft form a special-shaped bearing, the roller is equivalent to the outer ring of the bearing, and the rolling shaft is equivalent to the inner ring of the bearing. And a metal sealing ring is arranged on the outer side of the bearing to seal lubricating grease in the bearing.
Due to the difference of rock hardness, the rock breaking amount of a single hob is 800 cubic meters plus 500 in the service life, and the average working time is about 1000 hours, so that the requirement on the wear resistance of the roller alloy tooth is extremely high. In order to improve the crushing efficiency and protect the roller shell, the tooth rows on the outer circle of the roller are designed in two ways, the tooth rows of one roller correspond to the tooth grooves of the other hob and are required to be installed in pairs when being installed on a cutter head, so that the annular lug boss left on the rock stratum after the front roller is crushed by the rear roller.
Because the geological structure is complicated, when the geological structure has a fault, the chippings generated by crushing rock stratums by the hob are not uniform in size and can be leaked from the hollow part of the cutter head, and large rocks can be possibly generated to be clamped between the hob and a saddle or between the hob and the hob. Since these large rocks cannot leak into the tunnel at the bottom of the well, they will always rub against the rotating roller matrix, causing wear of the side matrix of the roller insert boss. When the base body is abraded to a certain degree, the fastening force of the alloy teeth is weakened, and the tooth falling phenomenon is easy to occur. When the alloy teeth fall off, the contact area between the roller base body and the rock is increased, the temperature is sharply increased, the sealing ring is aged and failed, lubricating grease leaks out of the bearing, and the hob is completely scrapped.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a hob tooth protection structure which can improve the wear resistance of a roller base body, reduce the abrasion of the roller base body and realize the durable fastening of a main cone tooth, thereby prolonging the service life of a hob.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a hobbing cutter protects tooth structure, includes the gyro wheel base member, gyro wheel base member lateral wall be provided with the tooth's socket and with the boss of inlaying that the tooth's socket borders on, it inlays to be equipped with to inlay the boss lateral wall and is located protect the tooth in the tooth's socket.
Furthermore, inlay the boss lateral wall and inlay and be equipped with a plurality ofly protect the tooth, and be a plurality of protect the tooth along circumference equipartition.
Furthermore, inlay on the boss and be equipped with a plurality of main awl teeth along circumference equipartition, just main awl tooth is the staggered arrangement with the fender tooth.
Furthermore, one side wall of the embedding boss is embedded with the guard teeth.
Furthermore, the two side walls of the embedded lug bosses are embedded with the guard teeth.
Furthermore, the axial big end of the roller base body is provided with a back conical surface, and a plurality of back conical teeth uniformly distributed along the circumferential direction are embedded on the back conical surface.
Further, the back bevel teeth and the main bevel teeth are arranged in a staggered mode.
Furthermore, the outer side wall of the roller base body is provided with a plurality of tooth grooves, and each tooth groove is internally provided with the guard teeth.
Further, the tooth protector in each tooth groove is positioned on one side, close to the axial large end of the roller base body, in the tooth groove.
In conclusion, the utility model has the following beneficial effects:
1. the arrangement of the tooth protector can improve the wear resistance of the roller base body, reduce the wear of the roller base body and realize the durable fastening of the main bevel gear, thereby prolonging the service life of the hob;
2. the main bevel gear and the protective gear are arranged in a staggered manner, so that the protective gear is convenient to embed, the fastening performance of the main bevel gear cannot be influenced, and the structural strength of the roller base body can be effectively guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a hob tooth protection structure in an embodiment.
In the figure: 1. a roller base body; 11. embedding a boss; 12. a tooth socket; 13. a back cone; 2. a main bevel gear; 3. protecting teeth; 4. back bevel teeth.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications without inventive contribution to the present embodiment as required after reading the present specification, but all of them are protected by patent law within the scope of the present invention.
Example (b):
a hob tooth protecting structure, referring to fig. 1, comprises a roller base body 1, wherein the outer side wall of the roller base body 1 is provided with a tooth socket 12 and an embedded boss 11 adjacent to the tooth socket 12; a plurality of main conical teeth 2 uniformly distributed along the circumferential direction are embedded on the embedding lug boss 11, and a protective tooth 3 positioned in the tooth groove is embedded on the side wall of the embedding lug boss 11; the arrangement of the tooth protection 3 can improve the wear resistance of the roller base body 1, reduce the wear of the roller base body 1 and realize the durable fastening of the main bevel gear 2, thereby prolonging the service life of the hob.
Referring to fig. 1, specifically, in the present embodiment, a plurality of guard teeth 3 are embedded in the side wall of the embedding boss 11, and the plurality of guard teeth 3 are uniformly distributed along the circumferential direction; preferably, main awl tooth 2 is the staggered arrangement with guard tooth 3 in this embodiment to be convenient for inlay and establish guard tooth 3, and can not influence the fastening nature of main awl tooth 2, can effectively guarantee the structural strength of gyro wheel base member 1 moreover.
Referring to fig. 1, in the present embodiment, three tooth grooves 12 are formed on a roller base 1, and four inlaid bosses 11 adjacent to the tooth grooves 12 are provided; wherein, only one side of the inlaying boss 11 positioned at the side edge is provided with a tooth socket 12, and both sides of the inlaying boss 11 positioned at the middle are provided with tooth sockets 12; preferably, in the embodiment, each tooth groove 12 is internally provided with a tooth protector 3, and the tooth protector 3 in each tooth groove 12 is positioned on one side of the tooth groove 12 close to the axial large end of the roller base body 1, so that the hob is better in economy; of course, in other alternative embodiments, the guard teeth 3 may be embedded in both side walls of the embedded boss 11, that is, two circles of guard teeth 3 are disposed in the tooth slot 12, or one circle of guard teeth 3 may be disposed in a part of the tooth slot 12, and two circles of guard teeth 3 are disposed in a part of the tooth slot 12, which is not limited herein.
Referring to fig. 1, in the present embodiment, a back conical surface 13 is disposed at an axial large end of a roller base body 1, and a plurality of back conical teeth 4 uniformly distributed along a circumferential direction are embedded on the back conical surface 13; the back bevel teeth 4 are adopted, so that the wear resistance of the roller base body 1 can be improved, the abrasion of the roller base body 1 is reduced, the main bevel teeth 2 are fastened for a long time, and the service life of the hob is prolonged; preferably, the back bevel teeth 4 and the main bevel teeth 2 are arranged in a staggered manner in the embodiment; in the embodiment, the main bevel gear 2, the guard gear 3 and the back bevel gear 4 are all alloy gears, so that the service life can be prolonged.
Claims (6)
1. The utility model provides a hobbing cutter protects tooth structure, includes the gyro wheel base member, gyro wheel base member lateral wall be provided with the tooth's socket and with the boss of inlaying that the tooth's socket borders on, its characterized in that: the side wall of the embedded boss is embedded with a tooth protector positioned in the tooth socket;
a plurality of guard teeth are embedded in the side wall of the embedding boss and are uniformly distributed along the circumferential direction;
a plurality of main bevel teeth which are uniformly distributed along the circumferential direction are embedded on the embedding boss, and the main bevel teeth and the guard teeth are arranged in a staggered manner;
the axial main end of the roller base body is provided with a back conical surface, and a plurality of back conical teeth uniformly distributed along the circumferential direction are embedded on the back conical surface.
2. The hob tooth protection structure according to claim 1, wherein: the protective teeth are embedded in one side wall of the embedded boss.
3. The hob tooth protection structure according to claim 1, wherein: the two side walls of the embedded lug bosses are embedded with the guard teeth.
4. The hob tooth protection structure according to claim 1, wherein: the back bevel teeth and the main bevel teeth are arranged in a staggered mode.
5. The hob tooth protection structure according to claim 1, wherein: the outer side wall of the roller base body is provided with a plurality of tooth sockets, and each tooth socket is internally provided with the guard teeth.
6. The hob tooth protection structure according to claim 5, wherein: the tooth protection in each tooth groove is positioned on one side, close to the axial large end of the roller base body, in the tooth groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123201025.2U CN217028795U (en) | 2021-12-17 | 2021-12-17 | Hobbing cutter protects tooth structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123201025.2U CN217028795U (en) | 2021-12-17 | 2021-12-17 | Hobbing cutter protects tooth structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217028795U true CN217028795U (en) | 2022-07-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123201025.2U Active CN217028795U (en) | 2021-12-17 | 2021-12-17 | Hobbing cutter protects tooth structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217028795U (en) |
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2021
- 2021-12-17 CN CN202123201025.2U patent/CN217028795U/en active Active
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