A tooth sleeve installation auxiliary tool

Abstract

The utility model relates to mechanical installation tool technical field especially relates to a tooth cover installation auxiliary tool, including coarse shaft, the lower part of coarse shaft is provided with thin axle, and coarse shaft adopts coaxial heart arrangement mode with thin axle, and the upper part of coarse shaft is provided with rubber pad, and the lower end surface edge of thin axle is treated through rounding, and the material quality of coarse shaft and thin axle selects including but not limited to carbon steel or stainless steel, the utility model constitutes the main part of the tool through coarse shaft and thin axle, when operating, inserts thin axle into the inner chamber of the tooth cover to be installed, and the axial impact operation is implemented to the end surface of coarse shaft through knocking the tool, and the rubber pad can play a certain protective effect to coarse shaft, prolongs the service life of coarse shaft, and the directional transmission and uniform distribution of impact load are realized through the double-shaft structure, ensure that the impact force is always along the tooth cover axis direction steady effect, fundamentally eliminates the part damage problem caused by non-uniform stress.

Description

Technical Field

[0001] This utility model relates to the field of mechanical installation tools, and in particular to an auxiliary tool for installing gear sleeves. Background Technology

[0002] As a key piece of equipment for underground roadway excavation in coal mines, the reliability of the cutting drum of the continuous miner directly affects production efficiency and safety. The cutting drum achieves its cutting function through the cooperation of the tooth seat and the tooth sleeve. However, in high-intensity tunneling operations, the tooth sleeve is very easy to fall off due to vibration and impact, and needs to be reassembled frequently.

[0003] In current maintenance operations, gear sleeve installation commonly uses general tools such as sledgehammers and pry bars to directly strike the gear sleeve, forcing it into the gear seat mating surface. This can easily lead to uneven stress on the gear sleeve, causing plastic deformation or edge curling failure. This not only causes the newly installed gear sleeve to be scrapped prematurely, but may also damage the precision mating surface of the gear seat, creating a risk of secondary damage to the equipment.

[0004] Therefore, to address the aforementioned issues, an auxiliary tool for gear sleeve installation can be designed. This tool employs a dual-shaft structure system, consisting of a coarse shaft and a fine shaft working together. During operation, the fine shaft is inserted into the inner cavity of the gear sleeve to be installed, and an axial impact is applied to the end face of the coarse shaft using a striking tool. The dual-shaft structure enables the directional transmission and uniform distribution of the impact load, ensuring that the impact force always acts stably along the gear sleeve axis. This fundamentally eliminates the problems of plastic deformation of parts and damage to mating surfaces caused by non-uniform force, effectively improving the quality of gear sleeve installation and the reliability of the equipment. Utility Model Content

[0005] In order to overcome the current problem that the installation of gear sleeves is generally carried out by directly striking with common tools such as sledgehammers and crowbars, which forces the gear sleeve into the mating surface of the gear seat, it is easy to cause uneven local stress on the gear sleeve and damage to the gear sleeve and gear seat.

[0006] The technical solution of this utility model is as follows: a toothed sleeve installation auxiliary tool, including a thick shaft and a thin shaft disposed below the thick shaft. The thick shaft and the thin shaft are arranged coaxially. A rubber pad is disposed on the upper part of the thick shaft. The lower end face edge of the thin shaft is rounded. The materials of the thick shaft and the thin shaft include, but are not limited to, carbon steel or stainless steel.

[0007] Preferably, the tool body is composed of a coarse shaft and a fine shaft. During operation, the rounded edge of the lower end face of the fine shaft allows for easy insertion into the inner cavity of the gear sleeve to be installed. An axial impact is applied to the end face of the coarse shaft by a striking tool. The rubber pad provides some protection for the coarse shaft, extending its service life. The dual-shaft structure enables the directional transmission and uniform distribution of impact loads, ensuring that the impact force always acts stably along the axis of the gear sleeve, fundamentally eliminating the problem of part damage caused by non-uniform force.

[0008] Preferably, the thin shaft is welded to the lower end of the thick shaft, and the outer diameter of the thin shaft is smaller than the inner diameter of the gear sleeve.

[0009] Preferably, the rubber pad is fixedly connected to the upper end face of the thick shaft, and the material of the rubber pad includes, but is not limited to, silicone or rubber.

[0010] Preferably, the lower end of the thick shaft has a mounting hole, and the upper end of the thin shaft is fixedly connected to a connecting post.

[0011] Preferably, the inner wall of the mounting hole and the outer wall of the connecting post are provided with a threaded structure that engages with each other, and the thin shaft is installed below the thick shaft through the cooperation of the mounting hole and the connecting post.

[0012] Preferably, a guide sleeve is fixedly installed on the upper end of the thick shaft, an end cover is slidably connected inside the guide sleeve, and a spring is fixedly installed between the end cover and the guide sleeve.

[0013] Preferably, the rubber pad is fixedly connected to the upper end face of the end cap.

[0014] The beneficial effects of this utility model are: The tool's main body consists of a thick shaft and a thin shaft. During operation, the thin shaft is inserted into the inner cavity of the gear sleeve to be installed, and the end face of the thick shaft is subjected to axial impact by a striking tool. The dual-shaft structure enables the directional transmission and uniform distribution of impact load, ensuring that the impact force always acts stably along the gear sleeve axis, fundamentally eliminating the problem of part damage caused by non-uniform force. The overall tool structure is simple, easy to process, and has a low configuration cost. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of the tooth sleeve installation auxiliary tool of this utility model; Figure 2 The diagram shown is another three-dimensional structural schematic of the tooth sleeve installation auxiliary tool of this utility model; Figure 3 The diagram shown is an exploded three-dimensional structural diagram of Embodiment 2 of the toothed sleeve installation auxiliary tool of this utility model; Figure 4 The diagram shown is a three-dimensional structural schematic of Embodiment 3 of the tooth sleeve installation auxiliary tool of this utility model; Figure 5 The diagram shown is a three-dimensional cross-sectional view of Embodiment 3 of the tooth sleeve installation auxiliary tool of this utility model; Explanation of reference numerals in the attached drawings: 1. Thick shaft; 101. Mounting hole; 2. Thin shaft; 201. Connecting post; 3. Rubber pad; 401. Guide sleeve; 402. Spring; 403. End cap. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Example 1 Please see Figure 1 and Figure 2 This utility model provides an embodiment: a gear sleeve installation auxiliary tool, including a thick shaft 1 and a thin shaft 2 disposed below the thick shaft 1. The thick shaft 1 and the thin shaft 2 are arranged coaxially. A rubber pad 3 is disposed above the thick shaft 1. The lower end face edge of the thin shaft 2 is rounded. The materials of the thick shaft 1 and the thin shaft 2 include, but are not limited to, carbon steel or stainless steel. The thin shaft 2 is welded to the lower end of the thick shaft 1. The outer diameter of the thin shaft 2 is smaller than the inner diameter of the gear sleeve. The rubber pad 3 is fixedly connected to the upper end face of the thick shaft 1. The material of the rubber pad 3 includes, but is not limited to, silicone or rubber.

[0018] During operation, the rounded edge of the lower end face of the thin shaft 2 can be used to easily insert the thin shaft 2 into the inner cavity of the gear sleeve to be installed. The end face of the thick shaft 1 is subjected to axial impact by a hammering tool. The rubber pad 3 can provide a certain degree of protection for the thick shaft 1 and extend its service life. The dual-shaft structure realizes the directional transmission and uniform distribution of impact load, ensuring that the impact force always acts stably along the axis of the gear sleeve, fundamentally eliminating the problem of part damage caused by non-uniform force.

[0019] Example 2 Please see Figure 3 This utility model provides another embodiment, which differs from embodiment 1 in that: the lower end of the thick shaft 1 is provided with a mounting hole 101, the upper end of the thin shaft 2 is fixedly connected with a connecting post 201, the inner wall of the mounting hole 101 and the outer wall of the connecting post 201 are provided with a threaded structure that engages with each other, and the thin shaft 2 is installed below the thick shaft 1 through the cooperation of the mounting hole 101 and the connecting post 201.

[0020] The thin shaft 2 can be detachably installed by the threaded engagement between the connecting post 201 and the mounting hole 101. This detachable design allows for easy replacement of the thin shaft 2 according to the inner diameter of different gear sleeves, effectively improving the versatility of the tool.

[0021] Example 3 Please see Figure 4 and Figure 5 This utility model provides another embodiment, which differs from embodiment 1 in that, in this embodiment, a guide sleeve 401 is fixedly installed on the upper end of the thick shaft 1, an end cover 403 is slidably connected inside the guide sleeve 401, a spring 402 is fixedly installed between the end cover 403 and the guide sleeve 401, and a rubber pad 3 is fixedly connected to the upper end face of the end cover 403.

[0022] When the thin shaft 2 is inserted into the gear sleeve for striking, it does not strike the thick shaft 1 directly, but strikes the upper surface of the end cover 403. The rubber pad 3 is set on the upper surface of the end cover 403 to provide some protection for the end cover 403 and extend its service life. After the striking force is transmitted to the end cover 403, the end cover 403 slides in the guide sleeve 401 and compresses the spring 402. The striking load is first partially absorbed and buffered by the elastic deformation of the spring 402, and then smoothly transmitted to the thick shaft 1 through the guide sleeve 401. This effectively avoids damage to the gear sleeve and gear seat from the instantaneous peak impact load. It not only achieves effective protection of the equipment parts, but also reduces the impact of the striking reaction force on the operator's arm and improves the operating comfort.

[0023] Through the above steps, the main body of the tool is formed by the coarse shaft 1 and the fine shaft 2. During operation, the fine shaft 2 is inserted into the inner cavity of the gear sleeve to be installed. An axial impact operation is performed on the end face of the coarse shaft 1 by a hammering tool. The rubber pad 3 can provide a certain degree of protection for the coarse shaft 1 and extend its service life. The dual-shaft structure realizes the directional transmission and uniform distribution of impact load, ensuring that the impact force always acts stably along the axis of the gear sleeve, fundamentally eliminating the problem of part damage caused by uneven force. This solves the problem that in current maintenance operations, gear sleeve installation is generally carried out by direct hammering with general tools such as sledgehammers and pry bars, forcing the gear sleeve into the gear seat mating surface, which easily leads to uneven local force on the gear sleeve and damage to the gear sleeve and gear seat.

[0024] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A gear sleeve installation auxiliary tool, comprising a coarse shaft (1), characterized in that: It also includes a thin shaft (2) located below the thick shaft (1). The thick shaft (1) and the thin shaft (2) are arranged coaxially. A rubber pad (3) is placed above the thick shaft (1). The lower end face edge of the thin shaft (2) is rounded. The materials of the thick shaft (1) and the thin shaft (2) include, but are not limited to, carbon steel or stainless steel.

2. The toothed sleeve installation auxiliary tool according to claim 1, characterized in that: The thin shaft (2) is welded to the lower end of the thick shaft (1), and the outer diameter of the thin shaft (2) is smaller than the inner diameter of the gear sleeve.

3. The toothed sleeve installation auxiliary tool according to claim 1, characterized in that: The rubber pad (3) is fixedly connected to the upper end face of the thick shaft (1). The material of the rubber pad (3) includes, but is not limited to, silicone or rubber.

4. The toothed sleeve installation auxiliary tool according to claim 3, characterized in that: The lower end of the thick shaft (1) is provided with a mounting hole (101), and the upper end of the thin shaft (2) is fixedly connected with a connecting post (201).

5. The toothed sleeve installation auxiliary tool according to claim 4, characterized in that: The inner wall of the mounting hole (101) and the outer wall of the connecting post (201) are provided with a threaded structure that engages with each other. The thin shaft (2) is installed below the thick shaft (1) through the cooperation of the mounting hole (101) and the connecting post (201).

6. The toothed sleeve installation auxiliary tool according to claim 1, characterized in that: A guide sleeve (401) is fixedly installed on the upper end of the thick shaft (1). An end cover (403) is slidably connected inside the guide sleeve (401). A spring (402) is fixedly installed between the end cover (403) and the guide sleeve (401).

7. The toothed sleeve installation auxiliary tool according to claim 6, characterized in that: The rubber pad (3) is fixedly connected to the upper end face of the end cap (403).

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