Controllable friction clutch of drum-type lawnmower

Abstract

The utility model belongs to the technical field of grass mowers, and particularly relates to a controllable friction clutch of a drum-type grass mower. Comprising a left cover, a right cover, a clutch block, an elastic piece and a bearing. The left cover and the right cover are arranged in a matched mode, a containing cavity is formed between the left cover and the right cover, a through shaft hole is formed in the center of the left cover, and the bearing is arranged in the through shaft hole in a sleeved mode. A through hole is formed in the center of the right cover, the clutch block is arranged in a circular truncated cone shape and arranged in the containing cavity, part of the clutch block extends out of the right cover through the through hole, one side of the elastic piece makes contact with an inner ring of the bearing, and the other side of the elastic piece makes contact with the clutch block. Transmission is achieved through friction force between the clutch block and the right cover, the clutch block and the right cover are separated under the action of external force, the clutch block and the right cover are connected again through the elastic piece, and then the clutch function is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lawn mowers, and particularly relates to a controllable friction clutch for a drum type lawn mower. Background Art

[0002] Drum lawn mowers are mainly used for lawns with flat ground, low grass height and high quality requirements, such as golf courses, football fields and other sports fields. The existing drum lawn mower clutches in China mostly use direct-connected clutches. After starting, the drum is in a state of continuous working, and the rotation of the drum cannot be freely and flexibly controlled by humans, which affects the service life of the lawn mower and causes many inconveniences during use. Therefore, how to realize the switch of the drum machine at any time during use is a problem that needs to be solved at present. Utility Model Content

[0003] The utility model aims to solve the problem that the rotation of the drum cannot be flexibly controlled, and proposes a controllable friction clutch for a drum type lawn mower which has reasonable design, simple structure, convenient processing and can be flexibly controlled during operation.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the utility model provides a controllable friction clutch for a drum-type lawn mower, comprising a left cover, a right cover, a clutch block, an elastic member, and a bearing; the left cover and the right cover are arranged in cooperation, a placement cavity is formed between the left cover and the right cover, a through shaft hole is arranged at the center of the left cover, and the bearing is sleeved in the through shaft hole; a through hole is arranged at the center of the right cover, the clutch block is arranged in a truncated cone shape, the clutch block is arranged in the placement cavity, a part of the clutch block extends from the right cover through the through hole, one side of the elastic member is arranged in contact with the inner ring of the bearing, and the other side of the elastic member is arranged in contact with the clutch block.

[0005] Preferably, a friction plate is bonded inside the right cover, and the friction plate is in contact with the surface of the clutch block.

[0006] Preferably, the left cover and the right cover are arranged by means of countersunk bolts and nuts.

[0007] Preferably, a hollow cylinder is arranged at the center of the left cover, the hollow cylinder is coaxial with the through-axis hole, the hollow cylinder is arranged in the placement cavity, and the bearing is sleeved in the hollow cylinder.

[0008] Preferably, the side of the clutch block cone with a smaller inner diameter extends out from the right cover through a through hole.

[0009] Preferably, the elastic member is a compression spring.

[0010] Compared with the prior art, the advantages and positive effects of the utility model are:

[0011] 1. The utility model provides a controllable friction clutch for a drum-type lawn mower, which realizes transmission through the friction between a clutch block and a cover body, separates the clutch block from the right cover under the action of an external force, and connects the clutch block to the right cover through an elastic member, thereby realizing a clutch function. At the same time, the utility model has a reasonable design, a simple structure, and is easy to process, and is suitable for large-scale promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0013] Figure 1 A front view of a controllable friction clutch for a drum-type lawn mower provided in Example 1;

[0014] Figure 2 A schematic diagram of the assembly of parts of a controllable friction clutch for a drum-type lawn mower provided in Example 1;

[0015] Figure 3 A schematic diagram of the structure of a controllable friction clutch for a drum lawn mower provided in Example 1;

[0016] Figure 4 A schematic diagram of the structure decomposition of a controllable friction clutch for a drum-type lawn mower provided in Example 1;

[0017] In the above figures, 1, nut; 2, left cover; 3, bearing; 4, friction plate; 5, right cover; 6, countersunk bolt; 7, clutch block; 8, compression spring; 9, hollow cylinder. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] Embodiment 1, as Figure 1 to Figure 4As shown, the present embodiment aims to provide a controllable friction clutch for a drum-type lawn mower. To this end, the controllable friction clutch for a drum-type lawn mower provided by the present embodiment comprises a left cover 2, a right cover 5, a clutch block 7, an elastic member, and a bearing 3. Considering the assembly of the overall structure of the clutch, the left cover 2 and the right cover 5 are matched and arranged, and a placement cavity is formed between the left cover 2 and the right cover 5. Considering that the left cover 2 is used as a power transmission component, a through shaft hole for connecting the transmission shaft is arranged at the center thereof. Considering that in the process of realizing the clutch function, the interior needs to remain stationary when the transmission shaft drives the left cover 2 and the right cover 5 to rotate, the bearing 3 is sleeved in the through hole, and one side of the elastic member is connected to the right cover 5. The inner rings of the bearings 3 are connected to ensure that the elastic member located at the inner ring of the bearing 3 will not rotate together during the rotation of the left cover 2 and the right cover 5. Considering the realization of the clutch function, the clutch block 7 needs to move back and forth. For this reason, a through hole is provided in the center of the right cover 5, and the clutch block 7 is partially arranged in the placement cavity. Considering the need to provide power for the rotation of the clutch block 7 through the contact friction between the right cover 5 and the clutch block 7, and the clutch block 7 stops rotating by separating the right cover 5 from the clutch block 7, the clutch block 7 is designed to be truncated. In order to realize the back and forth movement of the clutch block 7 in the clutch function, the other side of the elastic member is in contact with the clutch block 7, and this is realized through the action of the elastic member.

[0021] Taking into account the problem of power transmission, a friction plate 4 is bonded inside the right cover 5, and friction transmission is performed through the friction plate 4 and the clutch block 7. This can increase the friction force and provide power more effectively. At the same time, taking into account the wear and tear of parts during use, the material of the friction plate 4 is rubber, which also protects the right cover 5 and the clutch block 7 and increases their service life.

[0022] In order to better achieve the matching arrangement between the left cover 2 and the right cover 5, the left cover 2 and the right cover 5 are locked and fixed by countersunk bolts 6 and nuts 1.

[0023] In order to better enable the bearing 3 to function and better fix the bearing 3, in this example, a hollow cylinder 9 is also arranged in the center of the left cover 2, the hollow cylinder 9 is arranged coaxially with the through-axis hole, and the hollow cylinder 9 is arranged in the placement cavity, and the bearing 3 is mounted in the hollow cylinder 9 to play the above-mentioned role.

[0024] In consideration of better clutching action and for more convenient and free control of the clutch function, the side with the smaller inner diameter of the clutch block 7 cone is extended from the right cover 5 through the through hole. In this way, the clutch block 7 is pressed down by external force, and the clutch block 7 is separated from the right cover 5. When the external force is released, the clutch block 7 is reconnected with the right cover 5 under the action of the elastic member.

[0025] In order to realize the clutch function more flexibly and ensure that the clutch block 7 can be better reconnected with the right cover 5 when the external force is lost, the elastic member is selected as a compression spring 8 to ensure the above effect.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A controllable friction clutch for a drum lawn mower, characterized in that: It includes a left cover, a right cover, a clutch block, an elastic member, and a bearing; the left cover and the right cover are arranged in cooperation, a placement cavity is formed between the left cover and the right cover, a through shaft hole is arranged at the center of the left cover, and the bearing is sleeved in the through shaft hole; a through hole is arranged at the center of the right cover, the clutch block is arranged in a truncated cone shape, the clutch block is arranged in the placement cavity, a part of the clutch block extends from the right cover through the through hole, one side of the elastic member is arranged in contact with the inner ring of the bearing, and the other side of the elastic member is arranged in contact with the clutch block.

2. The controllable friction clutch of a drum lawn mower according to claim 1, characterized in that: A friction plate is bonded inside the right cover, and the friction plate is in contact with the surface of the clutch block.

3. The controllable friction clutch of a drum lawn mower according to claim 1, characterized in that: The left cover and the right cover are arranged in cooperation with each other through countersunk bolts and nuts.

4. The controllable friction clutch of a drum lawn mower according to claim 1, characterized in that: A hollow cylinder is arranged at the center of the left cover. The hollow cylinder is coaxial with the through-axis hole. The hollow cylinder is arranged in the placement cavity, and the bearing is sleeved in the hollow cylinder.

5. The controllable friction clutch of a drum lawn mower according to claim 1, characterized in that: The side of the clutch block cone with a smaller inner diameter extends out from the right cover through the through hole.

6. The controllable friction clutch of a drum lawn mower according to claim 1, characterized in that: The elastic member is a compression spring.

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