Inserted tooth hob with improved alloy tooth arrangement

Abstract

The utility model relates to the technical field of mine vertical roadway tunneling, and discloses an inserted tooth hobbing cutter with improved alloy tooth arrangement, which comprises an outer cutter shell, an inner cutter shell and an inner cutter shell, the rock breaking inserted teeth are arranged on the surface of the outer cutter shell, and the rock breaking inserted teeth are uniformly distributed on the surface of the outer cutter shell; the bearing assembly is arranged on the surface of the cutter shaft, a first end cover is installed on the upper portion of an inner cavity of the outer cutter shell, and a second end cover is installed on the lower portion of the inner cavity of the outer cutter shell; the fixing block is arranged on the lower surface of the outer cutter shell, and a cutter holder connecting hole is formed in the lower portion of the cutter shaft. And the rock breaking inserted teeth mounted on the outer contour of the outer cutter shell are densely arranged. By optimizing the surface structure of the outer cutter shell and the arrangement of the rock breaking inserted teeth, the number of the rock breaking inserted teeth is increased, the number of the rock breaking inserted teeth participating in rock breaking is larger within the same time, meanwhile, the stress load of a single rock breaking inserted tooth is relieved, the rock breaking capacity of the hob is improved, and the service life of the hob is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mine vertical tunnel excavation, in particular to an inlaid tooth hob with improved alloy tooth arrangement. Background Art

[0002] Alloy teeth are the main functional parts on the hob that are responsible for breaking rocks. The hob is a gear processing tool with teeth arranged in a spiral line along a cylinder or cone. It is used to process cylindrical gears, worm gears and other cylindrical toothed workpieces according to the development method.

[0003] Under hard rock conditions, the existing carbide rock-breaking cutters are limited by the cutter's own dimensions and the spacing of the alloy teeth, and the number of rock broken has basically reached the limit, thereby reducing the cutter's rock-breaking ability and service life. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the utility model provides an insert cutter with improved alloy tooth arrangement to solve the problems of poor rock breaking ability and short service life of the cutter mentioned in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an insert hob with improved alloy tooth arrangement, comprising:

[0008] An outer blade housing, wherein a blade shaft is installed in the middle of the inner cavity of the outer blade housing;

[0009] Rock breaking inserts are arranged on the surface of the outer blade shell, and the rock breaking inserts are evenly distributed on the surface of the outer blade shell;

[0010] The bearing assembly is arranged on the surface of the blade shaft, the upper part of the inner cavity of the outer blade housing is provided with a first end cover, and the lower part of the inner cavity of the outer blade housing is provided with a second end cover;

[0011] The fixing block is arranged on the lower surface of the outer blade housing, and a blade seat connecting hole is opened at the lower part of the blade shaft.

[0012] Preferably, the rock breaking inserts installed on the outer contour of the outer blade shell are arranged in a denser manner, and the outer contour of the outer blade shell is redesigned so that an extra layer of rock breaking inserts can be distributed, and different grades of alloy teeth can be used in different layers according to needs, so that it can be more applicable to more complex geological environments.

[0013] Preferably, the rock breaking inserts located at adjacent layers are all staggered and made of alloy steel, ensuring that when the cutter is rotating, the rock breaking inserts can contact the rock in a predetermined order and time interval, avoiding instantaneous impact on a single rock breaking insert.

[0014] Preferably, the rock breaking inserts are installed by press-fitting technology to ensure the firmness of the rock breaking inserts on the surface of the outer blade shell.

[0015] Preferably, the inner wall of the bearing assembly is connected to the surface of the blade shaft, and the surface of the bearing assembly is installed in the inner cavity of the outer blade housing, so that the blade shaft can rotate smoothly.

[0016] Preferably, the first end cover and the second end cover are both in contact with the surface of the knife shaft, which can increase the stability of the knife shaft.

[0017] Beneficial Effects

[0018] Compared with the prior art, the utility model provides an insert hob with improved alloy tooth arrangement, which has the following beneficial effects:

[0019] The toothed cutter with improved alloy tooth arrangement increases the number of rock breaking teeth by optimizing the surface structure of the outer cutter shell and the arrangement of the rock breaking teeth, so that more rock breaking teeth are involved in rock breaking in the same time, while alleviating the stress load on a single rock breaking tooth, thereby improving the rock breaking ability and life of the cutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a cross-sectional schematic diagram of the insert tooth hob of the utility model.

[0022] In the figure: 1, outer blade housing; 2, blade shaft; 3, rock breaking insert; 4, bearing assembly; 5, first end cover; 6, first end cover; 7, fixing block; 8, blade holder connecting hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides a technical solution, a toothed hob with improved alloy tooth arrangement, please refer to Figure 1 , including outer blade housing 1, please refer to Figure 2A knife shaft 2 is installed in the middle of the inner cavity of the outer knife housing 1;

[0025] The rock breaking inserts 3 are arranged on the surface of the outer blade shell 1, and the rock breaking inserts 3 are evenly distributed on the surface of the outer blade shell 1;

[0026] The bearing assembly 4 is arranged on the surface of the blade shaft 2. The upper part of the inner cavity of the outer blade housing 1 is provided with a first end cover 5, and the lower part of the inner cavity of the outer blade housing 1 is provided with a second end cover 6;

[0027] The inner wall of the bearing assembly 4 is connected to the surface of the blade shaft 2, and the surface of the bearing assembly 4 is installed in the inner cavity of the outer blade housing 1, so that the blade shaft 2 can rotate smoothly;

[0028] The first end cover 5 and the second end cover 6 are both in contact with the surface of the knife shaft 2, which can increase the stability of the knife shaft 2;

[0029] The fixing block 7 is arranged on the lower surface of the outer blade housing 1. A blade seat connecting hole 8 is opened at the lower part of the blade shaft 2. By optimizing the surface structure of the outer blade housing 1 and the arrangement of the rock breaking inserts 3, the number of rock breaking inserts 3 is increased, so that more rock breaking inserts 3 are involved in rock breaking in the same time, and the stress load of a single rock breaking insert 3 is alleviated, thereby improving the rock breaking ability and life of the roller cutter;

[0030] Compared with the same type of toothed hob, the outer shape of the outer cutter shell 1 and the distribution of alloy teeth are changed, but the overall size of the hob is not changed, and the previous installation structure and installation position of the hob can continue to be used;

[0031] The new cutter improves the arrangement and number of rock breaking inserts 3, reduces the workload of a single rock breaking insert 3, is conducive to slowing down the wear of the rock breaking insert 3, and improves the life of the cutter. In addition, the rock breaking inserts 3 can be configured differently according to different characteristics of rock formations, minerals, geological structures, etc., which is conducive to cost optimization.

[0032] The rock breaking inserts 3 installed on the outer contour of the outer blade shell 1 are arranged in a denser manner. The outer contour of the outer blade shell 1 is redesigned so that one more layer of rock breaking inserts 3 can be distributed, and different grades of alloy teeth can be used in different layers according to needs, so that it can be more applicable to more complex geological environments.

[0033] The rock breaking inserts 3 located at adjacent layers are all staggered and made of alloy steel, ensuring that when the cutter is rotating, the rock breaking inserts 3 can contact the rock in a predetermined sequence and time interval, avoiding instantaneous impact on a single rock breaking insert 3.

[0034] The rock breaking inserts 3 are all installed by using a press-fitting technique to ensure the firmness of the rock breaking inserts 3 on the surface of the outer blade housing 1 .

[0035] The device firstly increases the number of rock breaking teeth 3 by optimizing the surface structure of the outer blade shell 1 and the arrangement of the rock breaking teeth 3, so that more rock breaking teeth 3 are involved in rock breaking in the same time, and at the same time, the stress load of a single rock breaking tooth 3 is alleviated, thereby improving the rock breaking ability and life of the cutter. Compared with the same type of toothed cutter, the outer blade shell 1 and the alloy tooth distribution are changed, but the overall outer dimensions of the cutter are not changed, and the installation structure and installation position of the previous cutter can continue to be used. Then, the new cutter improves the arrangement and number of the rock breaking teeth 3, reduces The working load of a single rock-breaking tooth 3 is reduced, which is beneficial to reducing the wear of the rock-breaking tooth 3 and improving the life of the cutter. The rock-breaking tooth 3 can be configured differently according to different characteristics such as rock strata, minerals, and geological structures, which is beneficial to cost optimization. Finally, the rock-breaking teeth 3 are all made of alloy steel to ensure that when the cutter rotates, the rock-breaking teeth 3 can contact the rock in a predetermined sequence and time interval to avoid instantaneous impact on a single rock-breaking tooth 3. The rock-breaking teeth 3 are all installed using a press-fitting technology to ensure the firmness of the rock-breaking teeth 3 on the surface of the outer cutter shell 1.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An insert hob with improved alloy tooth arrangement, characterized in that: include: An outer blade housing (1), wherein a blade shaft (2) is installed in the middle of the inner cavity of the outer blade housing (1); Rock breaking inserts (3) are arranged on the surface of the outer blade housing (1), and the rock breaking inserts (3) are evenly distributed on the surface of the outer blade housing (1); A bearing assembly (4) is arranged on the surface of the blade shaft (2); a first end cover (5) is installed on the upper part of the inner cavity of the outer blade housing (1); and a second end cover (6) is installed on the lower part of the inner cavity of the outer blade housing (1); A fixing block (7) is arranged on the lower surface of the outer blade housing (1); a blade seat connection hole (8) is provided at the lower part of the blade shaft (2); and the rock breaking inserts (3) installed on the outer contour of the outer blade housing (1) are arranged in a dense manner.

2. The insert hob with improved alloy tooth arrangement according to claim 1, characterized in that: The rock breaking inserts (3) located at adjacent layers are all staggeredly distributed, and the rock breaking inserts (3) are all made of alloy steel.

3. The insert hob with improved alloy tooth arrangement according to claim 1, characterized in that: The rock breaking inserts (3) are all installed by using a press-fitting technology.

4. The insert hob with improved alloy tooth arrangement according to claim 1, characterized in that: The inner wall of the bearing assembly (4) is connected to the surface of the blade shaft (2), and the surface of the bearing assembly (4) is installed in the inner cavity of the outer blade housing (1).

5. The insert hob with improved alloy tooth arrangement according to claim 1, characterized in that: The first end cover (5) and the second end cover (6) are both in contact with the surface of the knife shaft (2).

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