Low-noise hob type lawn mower

Abstract

The utility model relates to the technical field of lawn mowers, and discloses a low-noise hob type lawn mower which comprises a hob mounting rack, a cutting hob is arranged at the bottom of the hob mounting rack, the two ends of the cutting hob are rotationally connected with the two sides of the bottom end of the hob mounting rack, a hand-push connecting rod is fixed to the hob mounting rack, and the hand-push connecting rod is connected with the hob mounting rack. The noise reduction connecting assemblies and the wheel body are symmetrically arranged on the two sides of the hob mounting frame, the two noise reduction connecting assemblies are symmetrically arranged on the two sides of the hob mounting frame and connected with the wheel body, and the buffer springs are arranged on the bottom sides of the supporting sliding blocks, so that vibration force can be effectively buffered; the damping rubber balls arranged on the top sides of the supporting sliding blocks can buffer and absorb vibration force and also can absorb resilience force of the buffer springs, so that large vibration cannot occur in the whole operation process, noise generated in the weeding process is effectively reduced, and the weeding machine is more silent and safer to use.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower technology, specifically a low-noise roller-type lawnmower. Background Technology

[0002] As living standards continue to improve, people are paying more and more attention to the greening of their living environment. Large ecological green spaces, residential green spaces, and roadside green spaces in cities are constantly increasing. Against this backdrop, various types of lawn mowing machinery have emerged. The rotary lawn mower, with its advantages of light weight, small size, and flexible operation, is loved by a wide range of users.

[0003] However, in actual use, most existing manual roller lawnmowers use ordinary rubber tires that are rigidly connected to the frame. When the wheels move and come into contact with the ground, the unevenness of the road surface can easily cause the wheels to vibrate at high frequencies, resulting in a lot of noise from the wheels and the rollers during operation. This noise can not only cause hearing damage to the operators, but also affect the normal life and study of the surrounding residents, making them quite defective in use. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a low-noise rotary lawnmower. It solves the problem that existing manual rotary lawnmowers, where the wheel structure mostly uses ordinary rubber tires rigidly connected to the frame, easily generate high-frequency vibrations when the wheels come into contact with the ground due to uneven surfaces. This causes significant noise from the wheels and the rotary cutter during operation, which can damage the operator's hearing and disrupt the normal lives and studies of nearby residents, resulting in significant drawbacks in their use.

[0005] This utility model provides the following technical solution: a low-noise roller cutter lawnmower, including a roller cutter mounting frame, a cutting roller cutter is provided at the bottom of the roller cutter mounting frame, both ends of the cutting roller cutter are rotatably connected to the two sides of the bottom end of the roller cutter mounting frame, a hand push connecting rod is fixed on the roller cutter mounting frame, and noise reduction connecting components and wheel bodies are symmetrically arranged on both sides of the roller cutter mounting frame.

[0006] The noise reduction connection assembly includes a fixed connection compartment disposed on the side of the hob mounting frame. The fixed connection compartment is fixedly connected to the hob mounting frame by a fixed connection block. A support slider is slidably disposed inside the fixed connection compartment. A support rod is vertically disposed at the bottom end of the support slider. The bottom end of the support rod penetrates the bottom of the fixed connection compartment. A buffer spring is sleeved on the support rod. One end of the buffer spring abuts against the support slider, and the other end of the buffer spring abuts against the bottom wall of the fixed connection compartment. A shock-absorbing rubber ball is bonded to the top of the support slider. A side connecting post is fixed to the side of the support slider. A closed cover plate is disposed on the side of the fixed connection compartment. A limiting sliding groove is opened in the middle of the closed cover plate. Connecting screw grooves are evenly opened around the perimeter of the side of the fixed connection compartment.

[0007] Preferred technical solution 1: The closed cover plate is provided with connecting holes evenly distributed around its perimeter, and connecting screws are inserted into each of the connecting holes.

[0008] Preferred technical solution 2: The end of the connecting screw is inserted into the connecting screw groove, and the side connecting post passes through the limiting sliding joint and is connected to the wheel body.

[0009] Preferred technical solution three: The wheel body is composed of a wheel and a central support rod, and the wheel and the central support rod are rotatably connected by a bearing.

[0010] This design allows the side connecting post to be connected to the central support rod of the wheel body without affecting the rotation of the wheel.

[0011] Preferred technical solution four: Two limiting grooves are symmetrically opened on both sides of the inner wall of the fixed connection compartment, and two limiting blocks are symmetrically arranged on both sides of the support slider, and the limiting blocks are slidably inserted into the limiting grooves.

[0012] This design allows the support slider to move only in the vertical direction within the fixed connection chamber.

[0013] Preferred technical solution five: A baffle is provided at the bottom end of the support rod.

[0014] This solution effectively blocks the bottom of the support rod, preventing it from falling out of the fixed connection chamber.

[0015] Compared with the prior art, this utility model provides a low-noise rotary lawnmower, which has the following beneficial effects:

[0016] (1) This utility model has two noise reduction connecting components symmetrically arranged on both sides of the roller mounting frame and connected to the wheel body. When the wheel body generates high-frequency vibration when working on an uneven grass surface, the vibration force generated by the wheel body will be transmitted to the support slider through the side connecting column. The bottom side of the support slider is equipped with a buffer spring that can effectively buffer the vibration force. The shock-absorbing rubber ball on the top side of the support slider can buffer and absorb the vibration force, as well as absorb the rebound force of the buffer spring. Thus, no large vibration will occur during the entire operation, which effectively reduces the noise generated during weeding and makes it quieter and safer to use. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is an exploded view of the structure of this utility model;

[0019] Figure 3 For the present utility model Figure 2 Enlarged view of the structure of the fixed connecting compartment;

[0020] Figure 4 For the present utility model Figure 1 Enlarged view of the structure of the medium-sized cutting hob.

[0021] In the diagram: 1. Cutting roller mounting bracket; 2. Cutting roller; 3. Hand-push connecting rod; 4. Noise reduction connecting assembly; 5. Wheel body;

[0022] 401. Fixed connection compartment; 402. Fixed connection block; 403. Support slider; 404. Support rod; 405. Buffer spring; 406. Shock-absorbing rubber ball; 407. Side connection column; 408. Closing cover plate; 409. Limiting sliding joint; 410. Connecting screw groove; 411. Connecting insertion hole; 412. Connecting screw. Detailed Implementation

[0023] Please see Figure 1-4 ,

[0024] Example 1: A low-noise roller cutter lawnmower includes a roller cutter mounting frame 1, a cutting roller 2 is provided at the bottom of the roller cutter mounting frame 1, both ends of the cutting roller 2 are rotatably connected to the two sides of the bottom end of the roller cutter mounting frame 1, a hand push connecting rod 3 is fixed on the roller cutter mounting frame 1, and noise reduction connecting components 4 and wheel bodies 5 are symmetrically arranged on both sides of the roller cutter mounting frame 1.

[0025] The noise reduction connection assembly 4 includes a fixed connection compartment 401 disposed on the side of the hob mounting frame 1. The fixed connection compartment 401 is fixedly connected to the hob mounting frame 1 by a fixed connection block 402. A support slider 403 is slidably disposed inside the fixed connection compartment 401. A support rod 404 is vertically disposed at the bottom end of the support slider 403. The bottom end of the support rod 404 penetrates through the bottom of the fixed connection compartment 401. A buffer spring 405 is sleeved on the support rod 404. One end of the buffer spring 405 abuts against the support slider 403, and the other end of the buffer spring 405 abuts against the bottom wall of the fixed connection compartment 401.

[0026] A shock-absorbing rubber ball 406 is bonded to the top of the support slider 403. A side connecting post 407 is fixed to the side of the support slider 403. A closing cover plate 408 is provided on the side of the fixed connecting compartment 401. A limiting sliding groove 409 is opened in the middle of the closing cover plate 408. Connecting screw grooves 410 are evenly opened around the side of the fixed connecting compartment 401. Connecting insertion holes 411 are evenly opened around the closing cover plate 408. Connecting screws 412 are inserted into the connecting insertion holes 411. The end of the connecting screw 412 is inserted into the connecting screw groove 410. The side connecting post 407 passes through the limiting sliding groove 409 and is connected to the wheel body 5.

[0027] Example 2: The difference between this example and Example 1 is that the wheel body 5 is composed of a wheel and a central support rod, and the wheel and the central support rod are rotatably connected by a bearing.

[0028] This allows the side connecting post 407 to be connected to the middle support rod of the wheel body 5 without affecting the rotation of the wheel.

[0029] Example 3: The difference between this example and Example 1 is that two limiting grooves are symmetrically opened on both sides of the inner wall of the fixed connection chamber 401, and two limiting blocks are symmetrically arranged on both sides of the support slider 403. The limiting blocks are slidably inserted into the limiting grooves.

[0030] This allows the support slider 403 to move only in the vertical direction within the fixed connection chamber 401.

[0031] Example 4: The difference between this example and Example 1 is that a baffle is provided at the bottom end of the support rod 404.

[0032] It effectively blocks the bottom of the support rod 404, preventing the support rod 404 from falling out of the fixed connection chamber 401.

[0033] In this embodiment, since the existing manual roller lawnmowers are mostly made of ordinary rubber tires that are rigidly connected to the frame, when the wheels move and come into contact with the ground, the unevenness of the road surface can easily cause the wheels to vibrate at high frequencies, which causes the wheels and the roller to generate a lot of noise during operation. This noise can not only cause hearing damage to the operator, but also affect the normal life and study of the surrounding residents, which is a major drawback in use.

[0034] In summary, when users need to mow lawns in noise-sensitive areas, such as near hospitals and schools, using this device instead of a traditional motorized lawnmower can significantly reduce the noise generated during the operation.

[0035] Furthermore, the roller mounting bracket 1 in this device is connected to the wheel body 5 on both sides through the noise reduction connecting components 4. The end of the side connecting column 407 in the noise reduction connecting component 4 is connected to the middle support rod of the wheel body 5, so that the wheel on the wheel body 5 can rotate normally. When the wheel is working on a relatively bumpy grass surface, the high-frequency vibration generated by the wheel and the ground will be transmitted to the support slider 403 through the side connecting column 407, thereby driving the support slider 403 to move up and down in the fixed connecting chamber 401. A buffer spring 405 is sleeved on the support rod 404 at the bottom of the support slider 403, which can buffer the vibration force transmitted by the support slider 403.

[0036] When the shock-absorbing rubber ball 406 on the top of the support slider 403 is squeezed and pressed, it can effectively buffer and absorb the reaction force of the buffer spring 405, the rebound force on the support slider 403, and the vibration force transmitted from the wheel. In conjunction with the buffer spring 405, it can play a good vibration reduction role, preventing the vibration force generated by the wheel from being transmitted to the cutter mounting bracket 1, which would cause the cutting cutter 2 to generate a lot of noise during operation. This makes the operation of the entire device quieter and will not cause too much noise interference to the surrounding environment, ensuring greater safety for the operators.

Claims

1. A low-noise roller-type lawnmower, comprising a roller mounting bracket (1), characterized in that: The bottom of the cutter mounting bracket (1) is provided with a cutting cutter (2), and both ends of the cutting cutter (2) are rotatably connected to the two sides of the bottom end of the cutter mounting bracket (1). A hand-push connecting rod (3) is fixed on the cutter mounting bracket (1). Noise reduction connecting components (4) and wheel bodies (5) are symmetrically arranged on both sides of the cutter mounting bracket (1). The noise reduction connection assembly (4) includes a fixed connection compartment (401) disposed on the side of the hob mounting frame (1). The fixed connection compartment (401) and the hob mounting frame (1) are fixedly connected by a fixed connection block (402). A support slider (403) is slidably disposed inside the fixed connection compartment (401). A support rod (404) is vertically disposed at the bottom end of the support slider (403). The bottom end of the support rod (404) penetrates the bottom of the fixed connection compartment (401). A buffer spring (405) is sleeved on the support rod (404). One end of the spring (405) abuts against the support slider (403), and the other end of the buffer spring (405) abuts against the bottom wall of the fixed connection chamber (401). A shock-absorbing rubber ball (406) is bonded to the top of the support slider (403). A side connecting post (407) is fixed to the side of the support slider (403). A closing cover plate (408) is provided on the side of the fixed connection chamber (401). A limiting sliding groove (409) is opened in the middle of the closing cover plate (408). Connecting screw grooves (410) are evenly opened around the side of the fixed connection chamber (401).

2. The low-noise rotary lawnmower according to claim 1, characterized in that: The closed cover plate (408) has evenly spaced connection holes (411) around its perimeter, and each connection hole (411) is fitted with a connecting screw (412).

3. A low-noise rotary lawnmower according to claim 2, characterized in that: The end of the connecting screw (412) is inserted into the connecting screw groove (410), and the side connecting post (407) passes through the limiting sliding joint (409) and is connected to the wheel body (5).

4. A low-noise rotary lawnmower according to claim 3, characterized in that: The wheel body (5) consists of a wheel and a central support rod, and the wheel and the central support rod are rotatably connected by a bearing.

5. A low-noise rotary lawnmower according to claim 4, characterized in that: Two limiting grooves are symmetrically opened on both sides of the inner wall of the fixed connection compartment (401), and two limiting blocks are symmetrically arranged on both sides of the support slider (403). The limiting blocks are slidably inserted into the limiting grooves.

6. A low-noise rotary lawnmower according to claim 5, characterized in that: A baffle is provided at the bottom end of the support rod (404).

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