Noise reduction and shock absorption mechanism of mower

Abstract

The utility model discloses a noise reduction and shock absorption mechanism of a lawn mower, relates to the technical field of noise reduction and shock absorption mechanisms, and aims to solve the problem that noise reduction of the lawn mower is not complete due to the fact that noise reduction treatment is carried out on a motor part of the lawn mower through a noise reduction cover structure of an existing noise reduction mechanism of the lawn mower, but noise is generated when the lawn mower cuts weeds. Comprising a knife roll outer cover, a lap-joint frame plate is arranged at one end of the knife roll outer cover, the lap-joint frame plate and the knife roll outer cover are of an integrated structure, and a lining partition plate is arranged on the inner wall of the knife roll outer cover; the inner grooves are formed in the inner walls of the two sides of the knife roll outer cover, bearing sleeve seats are arranged in the inner grooves, inner ring blocks are arranged above the bearing sleeve seats, a sleeving frame is arranged above the inner ring blocks, connecting end blocks are arranged at the two ends of the sleeving frame, and the two connecting end blocks and the sleeving frame are of an integrated structure; and the inner cavity is formed in the bearing sleeve seat, and a damping rod is arranged in the inner cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction and shock absorption mechanisms, in particular to a noise reduction and shock absorption mechanism for a lawn mower. Background Art

[0002] A lawn mower is also called a weed cutter, lawn mower, lawn trimmer, etc. A lawn mower is a mechanical tool used to trim lawns, vegetation, etc. It is composed of a cutter disc, an engine, running wheels, a walking mechanism, a blade, an armrest, and a control part. The lawn mower needs to be treated with noise reduction and vibration reduction during use.

[0003] For example, the announcement number is: CN214429386U (named "A silencing and noise reduction protective mechanism for a lawn mower"), which includes a silencer cover and a heat conduction mechanism. The silencer cover is a hollow rectangular parallelepiped with an opening at the bottom. A strip suction cup is provided at the bottom edge of the silencer cover for adsorption and fixation. The side wall of the silencer cover is provided with a heat conduction mechanism, which includes a heat conduction plate and a plurality of plug-in rods arranged in an array on one side of the heat conduction plate. The side wall of the silencer cover is provided with a through slot adapted to be plugged in with the plug-in rod. The heat conduction plate and the plug-in rod are a hollow structure connected as a whole, and the plug-in rod is provided with a hollow structure. A heat-conducting metal rod is provided through the end, one end of the heat-conducting metal rod is located on the outside of the plug-in rod, and the other end extends into the hollow structure of the plug-in rod. The sound-absorbing and noise-reducing protective mechanism has excellent sound-absorbing and noise-reducing and heat-conducting and heat-dissipating effects. It is easy to install and use, simple and practical, and improves the conventional silencer cover structure. The side wall of the silencer cover can be removably plugged in to install a heat-conducting plate. The heat-conducting plate is connected to the high-damping silencer cover, and has no rigid contact with the lawn mower shell. The vibration noise is small, and hollow glass material is used to form a closed sound insulation layer with the silencer cover to achieve a sound-absorbing and noise-reducing effect.

[0004] The above-mentioned lawn mower noise reduction mechanism reduces the noise of the motor part of the lawn mower through the silencer cover structure, but the lawn mower will also generate noise when cutting weeds, resulting in incomplete noise reduction of the lawn mower. Therefore, we provide a lawn mower noise reduction and shock absorption mechanism. Utility Model Content

[0005] The purpose of the utility model is to provide a noise reduction and shock absorption mechanism for a lawn mower, so as to solve the problem that the existing lawn mower noise reduction mechanism proposed in the above background technology reduces the noise of the motor part of the lawn mower by setting a silencer cover structure, but the lawn mower also generates noise when cutting weeds, resulting in incomplete noise reduction of the lawn mower.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a noise reduction and vibration reduction mechanism for a lawn mower, comprising a cutter roller cover, one end of which is provided with a lap frame plate, the lap frame plate and the cutter roller cover are an integral structure, and a lining partition is provided on the inner wall of the cutter roller cover;

[0007] Also includes:

[0008] An inner groove is arranged on the inner walls of both sides of the knife roller outer cover, and a bearing sleeve is arranged inside the inner groove, an inner ring block is arranged above the bearing sleeve, a sleeve frame is arranged above the inner ring block, and connecting end blocks are arranged at both ends of the sleeve frame, and the two connecting end blocks are an integral structure with the sleeve frame;

[0009] An inner cavity is arranged inside the bearing sleeve, and a damping rod is arranged inside the inner cavity, a shock absorbing spring is arranged outside the damping rod, and a limiting end block is arranged on the top of the damping rod and the shock absorbing spring;

[0010] An inner connecting column is welded to the upper end of the position limiting end block, and a bottom support is welded to the bottom center of the inner ring block, and the bottom support is welded to the inner connecting column.

[0011] Preferably, an assembly groove is provided at the connection position between the connecting end block and the knife roller outer cover, the assembly groove and the knife roller outer cover are an integral structure, a fastening bolt is provided at the connection position between the connecting end block and the assembly groove, and the sleeve frame is fixedly connected to the knife roller outer cover through the fastening bolt.

[0012] Preferably, one end of the lining partition is provided with a mounting screw hole, the interior of the overlapping frame plate is provided with a threaded connection hole, and connecting bolts are installed inside adjacent mounting screw holes and threaded connection holes.

[0013] Preferably, guide grooves are provided on both inner walls of the inner groove, connecting sliders are welded on both outer walls of the inner ring block, and the inner ring block is movably connected to the guide grooves on the inner wall of the inner groove via the connecting sliders.

[0014] Preferably, a movable through hole is provided at the connecting position between the inner connecting column and the inner cavity, the movable through hole is connected to the inside of the inner cavity, and the size of the limiting end block is larger than the caliber of the movable through hole.

[0015] Preferably, both ends of the damping rod and the shock absorbing spring are fixedly connected to the limiting end block and the inner cavity respectively by means of nail-free glue.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. When the utility model is mowing the grass, the grass clippings produced by cutting hit the lining partition, which is made of sponge board material and is installed to the inside of the cutter roller cover by connecting bolts and adhesive stickers, thereby avoiding the grass clippings from directly hitting the cutter roller cover to generate noise, reducing the noise generated during the mowing process, and overcoming the problem that the existing lawn mower noise reduction mechanism reduces the noise of the motor part of the lawn mower through the silencer cover structure, but the lawn mower also generates noise when cutting weeds, resulting in incomplete noise reduction of the lawn mower.

[0018] 2. The shock-absorbing spring and the damping rod form a damping shock-absorbing mechanism, which cooperates with the load-bearing sleeve and the internal column to perform shock-absorbing and buffering treatment on the carried lawn mower blade roller. During the shock-absorbing and buffering process, the connecting slider moves along the guide slide groove for guiding movement, thereby reducing the amplitude generated during the movement of the lawn mower blade roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the noise reduction and vibration reduction mechanism of the lawn mower of the utility model;

[0020] Figure 2 It is an enlarged schematic diagram of the structure of part A of the utility model;

[0021] Figure 3 It is a schematic diagram of the connection structure between the inner ring block and the bearing sleeve of the utility model;

[0022] Figure 4 This is a schematic diagram of the connection structure between the lining partition and the overlapping frame plate of the utility model;

[0023] In the figure: 1. outer cover of knife roller; 2. overlapping frame plate; 3. lining partition plate; 4. inner groove; 5. assembly groove; 6. sleeve frame; 7. connecting end block; 8. fastening bolt; 9. inner ring block; 10. bearing sleeve; 11. guide slide groove; 12. inner connecting column; 13. connecting slider; 14. bottom support; 15. inner cavity; 16. movable through-hole; 17. limit end block; 18. shock-absorbing spring; 19. damping rod; 20. mounting screw hole; 21. threaded connection hole; 22. connecting bolt. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See also Figure 1-4 The utility model provides an embodiment: a noise reduction and vibration reduction mechanism for a lawn mower, comprising a cutter roller cover 1, one end of the cutter roller cover 1 is provided with a lap frame plate 2, the lap frame plate 2 and the cutter roller cover 1 are an integral structure, and a lining partition plate 3 is provided on the inner wall of the cutter roller cover 1;

[0026] Also includes:

[0027] The inner groove 4 is arranged on the inner walls of both sides of the knife roller outer cover 1, and a bearing sleeve 10 is arranged inside the inner groove 4, an inner ring block 9 is arranged above the bearing sleeve 10, and a sleeve frame 6 is arranged above the inner ring block 9, and connecting end blocks 7 are arranged at both ends of the sleeve frame 6, and the two connecting end blocks 7 are integrated with the sleeve frame 6;

[0028] An inner cavity 15 is arranged inside the bearing sleeve 10, and a damping rod 19 is arranged inside the inner cavity 15, a damping spring 18 is arranged outside the damping rod 19, and a limiting end block 17 is arranged on the top of the damping rod 19 and the damping spring 18;

[0029] The inner column 12 is welded to the upper end of the limiting end block 17 , and a bottom support 14 is welded to the bottom center of the inner ring block 9 , and the bottom support 14 is welded to the inner column 12 .

[0030] When in use, grass clippings produced by cutting hit the lining partition, which is made of sponge board material and is installed to the inside of the knife roller cover by connecting bolts and adhesive stickers, avoiding grass clippings directly hitting the knife roller cover to generate noise, thereby reducing the noise generated during mowing. The shock-absorbing spring and the damping rod form a damping shock-absorbing mechanism, which cooperates with the bearing sleeve and the internal column to perform shock-absorbing and buffering treatment on the carried lawn mower knife roller. During the shock-absorbing and buffering process, the connecting slider is guided along the guide groove to reduce the amplitude generated during the movement of the lawn mower knife roller.

[0031] See also Figure 1 An assembly groove 5 is provided at the connection position between the connecting end block 7 and the knife roller outer cover 1. The assembly groove 5 and the knife roller outer cover 1 are an integral structure. A fastening bolt 8 is provided at the connection position between the connecting end block 7 and the assembly groove 5. The sleeve frame 6 is fixedly connected to the knife roller outer cover 1 through the fastening bolt 8. The assembly groove 5 provided at the connection position between the connecting end block 7 and the knife roller outer cover 1 serves to facilitate the corresponding connection of the connecting end block 7.

[0032] See also Figure 4 A mounting screw hole 20 is provided at one end of the lining partition 3, a threaded hole 21 is provided inside the lap frame plate 2, and connecting bolts 22 are installed inside adjacent mounting screw holes 20 and threaded holes 21. The mounting screw hole 20 provided at one end of the lining partition 3 serves to facilitate the installation of the lining partition 3.

[0033] See also Figure 2 and Figure 3 Guide grooves 11 are provided on the inner walls of both sides of the inner groove 4, and connecting sliders 13 are welded on the outer walls of both sides of the inner ring block 9. The inner ring block 9 is movably connected to the guide grooves 11 on the inner wall of the inner groove 4 through the connecting sliders 13. The guide grooves 11 provided on the inner walls of both sides of the inner groove 4 play a role in facilitating the internal guiding movement of the connecting sliders 13.

[0034] See also Figure 3A movable through-hole 16 is provided at the connecting position between the inner column 12 and the inner cavity 15. The movable through-hole 16 is connected to the inside of the inner cavity 15. The size of the limiting end block 17 is larger than the diameter of the movable through-hole 16. The movable through-hole 16 provided at the connecting position between the inner column 12 and the inner cavity 15 serves to facilitate the movable connection of the inner column 12.

[0035] See also Figure 3 The two ends of the damping rod 19 and the shock absorbing spring 18 are fixedly connected to the limiting end block 17 and the inner cavity 15 respectively through nail-free glue.

[0036] Working principle: When in use, the blade roller cover 1 is installed to the outside of the blade roller of the lawn mower, so that the bearing of the blade roller of the lawn mower is fixedly connected to the inner ring block 9 through the nail-free glue, and then the two sleeve frames 6 are assembled and connected to the blade roller cover 1 through the fastening bolts 8, and the lap frame plate 2 is abutted against the base of the lawn mower motor. When mowing, the grass clippings produced by cutting hit the lining partition 3. The lining partition 3 is made of sponge board material and is installed to the inside of the blade roller cover 1 through connecting bolts 22 and adhesive stickers, thereby avoiding the grass clippings from directly hitting the blade roller cover 1 to generate noise, thereby reducing the noise generated during the mowing process. In addition, the shock-absorbing spring 18 and the damping rod 19 form a damping and shock-absorbing mechanism, which cooperates with the bearing sleeve 10 and the inner column 12 to perform shock-absorbing and buffering treatment on the carried lawn mower blade roller. During the shock-absorbing and buffering process, the connecting slider 13 guides along the guide slot 11 to reduce the amplitude generated during the movement of the lawn mower blade roller, thereby completing the use of the lawn mower noise reduction and shock-absorbing mechanism.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A noise reduction and vibration reduction mechanism for a lawn mower, comprising a cutter roller cover (1), one end of the cutter roller cover (1) is provided with a lap frame plate (2), the lap frame plate (2) and the cutter roller cover (1) are an integral structure, and a lining partition plate (3) is provided on the inner wall of the cutter roller cover (1); Features: Also includes: An inner groove (4) is arranged on the inner walls of both sides of the knife roller outer cover (1), and a bearing sleeve (10) is arranged inside the inner groove (4), an inner ring block (9) is arranged above the bearing sleeve (10), a sleeve frame (6) is arranged above the inner ring block (9), and connecting end blocks (7) are arranged at both ends of the sleeve frame (6), and the two connecting end blocks (7) are an integral structure with the sleeve frame (6); An inner cavity (15) is arranged inside the bearing sleeve (10), and a damping rod (19) is arranged inside the inner cavity (15), a damping spring (18) is arranged outside the damping rod (19), and a limiting end block (17) is arranged on the top of the damping rod (19) and the damping spring (18); The inner column (12) is welded to the upper end of the limit end block (17), and a bottom support (14) is welded to the bottom center of the inner ring block (9), and the bottom support (14) is welded to the inner column (12).

2. The lawn mower noise reduction and vibration reduction mechanism according to claim 1, characterized in that: An assembly groove (5) is provided at the connection position between the connection end block (7) and the knife roller outer cover (1); the assembly groove (5) and the knife roller outer cover (1) are an integral structure; a fastening bolt (8) is provided at the connection position between the connection end block (7) and the assembly groove (5); and the sleeve frame (6) is fixedly connected to the knife roller outer cover (1) via the fastening bolt (8).

3. The lawn mower noise reduction and vibration reduction mechanism according to claim 1, characterized in that: One end of the lining partition plate (3) is provided with a mounting screw hole (20), the interior of the overlapping frame plate (2) is provided with a threaded connection hole (21), and connecting bolts (22) are installed inside adjacent mounting screw holes (20) and threaded connection holes (21).

4. The lawn mower noise reduction and vibration reduction mechanism according to claim 1, characterized in that: Guide grooves (11) are provided on both inner walls of the inner groove (4), and connecting sliders (13) are welded on both outer walls of the inner ring block (9). The inner ring block (9) is movably connected to the guide grooves (11) on the inner wall of the inner groove (4) via the connecting sliders (13).

5. The lawn mower noise reduction and vibration reduction mechanism according to claim 1, characterized in that: A movable through hole (16) is provided at the connecting position between the inner connecting column (12) and the inner cavity (15), the movable through hole (16) is connected to the inside of the inner cavity (15), and the size of the limiting end block (17) is larger than the diameter of the movable through hole (16).

6. The lawn mower noise reduction and vibration reduction mechanism according to claim 1, characterized in that: The two ends of the damping rod (19) and the shock absorbing spring (18) are respectively fixedly connected to the limit end block (17) and the inner cavity (15) by means of nail-free glue.

Images