Mounting structure of mower cutter

Abstract

The utility model discloses a mowing machine cutter installation structure which comprises a rotating head, a coupler is arranged at the bottom end of the rotating head, a rotating ring is fixedly installed outside the coupler, a shifting rod assembly is arranged on the outer wall of one side of the bottom of the rotating ring, a hollow shaft is arranged at the bottom end of the coupler, and a plurality of through holes are formed in the outer wall of the bottom end of the hollow shaft. A limiting ball is arranged in the through hole, a limiting ring is fixedly installed on the outer wall of the hollow shaft, a reset spring connected to the outer portion of the hollow shaft in a sleeving mode is arranged on the limiting ring, the outer portion of the hollow shaft is sleeved with a constraint sleeve, and the constraint sleeve is in sliding connection with the limiting ring. According to the lifting lever assembly, sliding of the constraint sleeve outside the hollow shaft is achieved, constraint of the limiting ball to the shaft lever is relieved, the shaft lever can freely slide in the hollow shaft, the purpose of quick disassembly and assembly of a cutter at the bottom of the shaft lever is achieved, and great convenience is brought to people to replace the cutter of the mower.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mowers, and particularly relates to an installation structure of a lawn mower cutter. Background Technique

[0002] Portable power lawn mowers are commonly used tools for removing weeds growing in the fields. On such lawn mowers, the rotational power generated by a small engine is transmitted to a rotary cutter equipped at the front end of an operating tube, and the operator waves the operating tube to perform the required weeding operation. As the rotary cutter, generally a relatively hard nylon rope or a hard cutter is used, and the weeds are cut under the action of high-speed rotation. Thus, the purpose of field weeding or garden management is achieved.

[0003] The existing lawn mower cutters are generally fixedly installed by reverse bolts, so as to realize the fixed installation of the cutter on the rotating head. Although the fixed installation of the cutter can be realized, there will be a protruding bolt below the cutter, and the cutter cannot be closely attached to the ground for work. At the same time, if the operator replaces different types of cutters, the bolts need to be removed by tools first, and the disassembly and assembly of the cutter are relatively troublesome. Therefore, it is urgent to design an installation structure of a lawn mower cutter to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide an installation structure of a lawn mower cutter to solve the above deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solution:

[0006] An installation structure of a lawn mower cutter, including a rotating head, a coupling is arranged at the bottom end of the rotating head, and a rotating ring is fixedly installed outside the coupling. A lever assembly is arranged on the outer wall of one side of the bottom of the rotating ring. A hollow shaft is arranged at the bottom end of the coupling. A plurality of through holes are formed on the outer wall of the bottom end of the hollow shaft, and a limiting ball is arranged inside the through holes. A limiting ring is fixedly installed on the outer wall of the hollow shaft, and a return spring sleeved outside the hollow shaft is arranged on the limiting ring. A binding sleeve is sleeved outside the hollow shaft, and the binding sleeve is slidably connected with the limiting ring. A shaft rod is inserted into the bottom end inside the hollow shaft. A clamping groove matched with the limiting ball is arranged on the outer wall of the shaft rod. A cutter mounting disc is fixedly installed at the bottom end of the shaft rod, and a plurality of cutters are arranged on the outer wall of the cutter mounting disc.

[0007] Preferably, a transmission connection sleeve is arranged on one side of the rotating head, and transmission parts are arranged inside the rotating head and the transmission connection sleeve.

[0008] Preferably, a plurality of splines are arranged on the inner wall of the hollow shaft, and a plurality of key grooves matched with the splines are arranged on the outer wall of the top end of the shaft rod.

[0009] Preferably, a notch is formed on the inner wall at the bottom end of the restraint sleeve, and a spring installation groove for sleeving a return spring is arranged in the middle of the inner wall of the restraint sleeve, and a convex block is arranged on the inner wall of the restraint sleeve corresponding to the limit ball.

[0010] Preferably, the lever assembly includes a suspension rod fixed on the outer wall at the bottom of the rotating ring, and a rotating seat is arranged at the bottom end of the suspension rod. A rocker is rotatably installed on the rotating seat. One end of the rocker is provided with a hinge seat fixed on the outer wall of one side of the restraint sleeve, and a handle is fixedly arranged at the other end of the rocker.

[0011] Preferably, a through chute is formed on the outer wall of one side of the rocker, and a pin shaft is inserted into the chute. The pin shaft is rotatably inserted into the rotating seat.

[0012] In the above technical solution, for an installation structure of a lawn mower cutter provided by the present utility model, the beneficial effects are as follows:

[0013] (1) By adopting the lever assembly, the sliding of the restraint sleeve outside the hollow shaft is realized, so that the limit ball releases the restraint on the shaft rod, enabling the shaft rod to freely slide inside the hollow shaft, achieving the purpose of quickly disassembling and assembling the cutter at the bottom of the shaft rod, and bringing great convenience to people for replacing the cutter of the lawn mower.

[0014] (2) By adopting the restraint sleeve with convex blocks arranged inside, when the restraint sleeve slides to the upper position, the convex blocks are separated from the limit ball. When the shaft rod is inserted into the hollow shaft, the shaft rod extrudes the limit ball outwards, enabling the shaft rod to be smoothly inserted into the hollow shaft. Finally, the operator releases the restraint sleeve, and under the action of the return spring, the convex blocks on the restraint sleeve squeeze the limit ball into the inside of the card slot, thereby realizing the quick installation of the shaft rod inside the hollow shaft.

[0015] (3) By adopting the cooperation of the spline and the key groove, the stability of the connection between the hollow shaft and the shaft rod is ensured, and a good torque transmission effect can also be achieved, ensuring that the cutter can receive the high-speed rotational movement of the rotating head and realizing the purpose of quickly mowing weeds. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0017] Figure 1 It is a three-dimensional structure diagram provided for an embodiment of an installation structure of a lawn mower cutter of the present utility model.

[0018] Figure 2The present invention provides a structural explosion diagram of an embodiment of a mounting structure of a lawn mower cutter.

[0019] Figure 3 A partial structural sectional view of an embodiment of the installation structure of a lawn mower cutter according to the utility model.

[0020] Figure 4 The present invention is a schematic diagram of a partially enlarged structure of a restraining sleeve provided in an embodiment of the installation structure of a lawn mower cutter.

[0021] 1 rotating head, 2 transmission connecting sleeve, 3 swivel, 4 coupling, 5 lever assembly, 51 suspension rod, 52 rotating seat, 53 tilting rod, 54 hinge seat, 55 slide groove, 56 handle, 6 hollow shaft, 7 limit ball, 8 return spring, 9 limit ring, 10 restraining sleeve, 11 shaft rod, 12 keyway, 13 card slot, 14 tool mounting plate, 15 tool, 16 bump, 17 spring mounting groove, 18 notch. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] like Figures 1-4 As shown, an installation structure of a lawn mower tool provided by an embodiment of the utility model comprises a rotating head 1, a coupling 4 is provided at the bottom end of the rotating head 1, and a swivel 3 is fixedly installed on the outside of the coupling 4, a lever assembly 5 is provided on the outer wall of one side of the bottom of the swivel 3, a hollow shaft 6 is provided at the bottom end of the coupling 4, a plurality of through holes are opened on the outer wall of the bottom end of the hollow shaft 6, and a limiting ball 7 is provided inside the through hole, a limiting ring 9 is fixedly installed on the outer wall of the hollow shaft 6, and a return spring 8 sleeved on the outside of the hollow shaft 6 is provided on the limiting ring 9, a restraining sleeve 10 is sleeved on the outside of the hollow shaft 6, and the restraining sleeve 10 is slidably connected with the limiting ring 9, a shaft rod 11 is inserted into the bottom end of the hollow shaft 6, a slot 13 matching the limiting ball 7 is provided on the outer wall of the shaft rod 11, a tool mounting plate 14 is fixedly installed on the bottom end of the shaft rod 11, and a plurality of tools 15 are provided on the outer wall of the tool mounting plate 14.

[0024] Specifically, in this embodiment, it includes a rotating head 1. A coupling 4 is provided at the bottom end of the rotating head 1, and a rotating ring 3 is fixedly installed outside the coupling 4. A lever assembly 5 is provided on the outer wall of one side of the bottom of the rotating ring 3. A hollow shaft 6 is provided at the bottom end of the coupling 4. Through the rotation of the transmission member inside the rotating head 1, the coupling 4 and the hollow shaft 6 are driven to rotate synchronously. A plurality of through holes are formed on the outer wall of the bottom end of the hollow shaft 6, and a limiting ball 7 is arranged inside the through holes. A limiting ring 9 is fixedly installed on the outer wall of the hollow shaft 6, and a return spring 8 sleeved outside the hollow shaft 6 is arranged on the limiting ring 9. A restraint sleeve 10 is sleeved outside the hollow shaft 6, and the restraint sleeve 10 is slidably connected with the limiting ring 9. A shaft rod 11 is inserted into the bottom end inside the hollow shaft 6. A clamping groove 13 matching with the limiting ball 7 is arranged on the outer wall of the shaft rod 11. A tool mounting disc 14 is fixedly installed at the bottom end of the shaft rod 11, and a plurality of tools 15 are arranged on the outer wall of the tool mounting disc 14. Here, the shaft rod 11, the tool mounting disc 14 and the tools 15 are of an integral structure, and the structure of the tools 15 is not limited to the structure as Figure 1 shown. The tool 15 can also be a grass cutting rope. If you want to replace the tool, you can directly replace the shaft rod 11, the tool mounting disc 14 and the tool 15 together, which provides great convenience for people to replace the tool;

[0025] The adopted restraint sleeve 10 is provided with a convex block 16 inside. When the restraint sleeve 10 slides to the upper position, the convex block 16 is separated from the limiting ball 7. When the shaft rod 11 is inserted into the hollow shaft 6, the shaft rod 11 squeezes the limiting ball 7 outwards, so that the shaft rod 11 can be smoothly inserted into the hollow shaft 6. Finally, the operator releases the restraint sleeve 10. Under the action of the return spring 8, the convex block 16 on the restraint sleeve 10 squeezes the limiting ball 7 into the inside of the clamping groove 13, thereby realizing the quick installation of the shaft rod 11 inside the hollow shaft 6.

[0026] An installation structure of a grass cutting machine tool provided by the present utility model adopts the lever assembly 5 to realize the sliding of the restraint sleeve 10 outside the hollow shaft 6, so that the limiting ball 7 releases the restraint on the shaft rod 11, enabling the shaft rod 11 to freely slide inside the hollow shaft 6, achieving the purpose of quick disassembly and assembly of the tool 15 at the bottom of the shaft rod 11, and bringing great convenience to people for replacing the tool 15 of the grass cutting machine.

[0027] As an embodiment provided by the present utility model, a transmission connection sleeve 2 is arranged on one side of the rotating head 1, and a transmission member is arranged inside the rotating head 1 and the transmission connection sleeve 2. The gasoline engine of the grass cutting machine generates power, which is transmitted inside the rotating head 1 and the transmission connection sleeve 2 through the transmission member, thereby driving the coupling 4 and the hollow shaft 6 to rotate at high speed. The hollow shaft 6 drives the shaft rod 11, the tool mounting disc 14 and the tool 15 to rotate at high speed, thereby achieving the purpose of grass cutting.

[0028] In another embodiment provided by the present utility model, a plurality of splines are provided on the inner wall of the hollow shaft 6, and a plurality of key grooves 12 matching with the splines are provided on the outer wall of the top end of the shaft rod 11. The cooperation of the key grooves 12 and the splines can facilitate the sliding installation of the shaft rod 11 inside the hollow shaft 6, and at the same time can realize the motion transmission between the shaft rod 11 and the hollow shaft 6.

[0029] In still another embodiment provided by the present utility model, a notch 18 is formed on the inner wall of the bottom end of the restraint sleeve 10. With the notch 18, after the restraint sleeve 10 moves upward, the limit ball 7 can be ejected from the inside of the hollow shaft 6, so as to better release the limit of the limit ball 7 on the shaft rod 11, facilitate the removal of the shaft rod 11 from the inside of the hollow shaft 6, and better realize the replacement of the bottom tool. A spring installation groove 17 for sleeving the return spring 8 is provided in the middle of the inner wall of the restraint sleeve 10. The spring installation groove 17 provided enables the return spring 8 to have a receiving space. After people operate the restraint sleeve 10, under the action of the return spring 8, the restraint sleeve 10 can be automatically reset. At the same time, during the high-speed rotation of the tool, the situation of the restraint sleeve 10 moving upward is avoided, ensuring the reliability of the motion transmission. A convex block 16 is provided on the inner wall of the restraint sleeve 10 corresponding to the limit ball 7. The position of the limit ball 7 is limited through the convex block 16, enabling the limit ball 7 to stably limit the shaft rod 11 and enabling the shaft rod 11 to be stably installed inside the hollow shaft 6.

[0030] In still another embodiment provided by the present utility model, the lever assembly 51 includes a suspension rod 51 fixed on the outer wall of the bottom of the rotating ring 3, and a rotating seat 52 is provided at the bottom end of the suspension rod 51. A rocker 53 is rotatably installed on the rotating seat 52. One end of the rocker 53 is provided with a hinge seat 54 fixed on the outer wall of one side of the restraint sleeve 10, and a handle 5 is fixedly provided at the other end of the rocker 53. A through chute 55 is formed on the outer wall of one side of the rocker 53, and a pin shaft is inserted into the chute 55. The pin shaft is rotatably inserted into the rotating seat 52. The lever assembly 51 rotates synchronously with the rotating ring 3 and the hollow shaft 6. When people need to replace the tool, first stop the operation of the lawn mower, and then hold the handle 56 with the hand, so that the handle 56 drives the rocker 53 to rotate on the rotating seat 52. At the same time, the pin shaft slides inside the chute 55, and the restraint sleeve 10 is moved upward along the hollow shaft 6 and the limit ring 9 by using the rocker 53, facilitating people's operation of the restraint sleeve 10.

[0031] Only some exemplary embodiments of the present utility model are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present utility model, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present utility model.

Claims

1. A lawn mower tool mounting structure, comprising a rotating head (1), characterized in that: A coupling (4) is provided at the bottom end of the rotating head (1), and a rotating ring (3) is fixedly installed on the outside of the coupling (4), a lever assembly (5) is provided on the outer wall of one side of the bottom of the rotating ring (3), a hollow shaft (6) is provided at the bottom end of the coupling (4), a plurality of through holes are opened on the outer wall of the bottom end of the hollow shaft (6), and a limiting ball (7) is provided inside the through hole, a limiting ring (9) is fixedly installed on the outer wall of the hollow shaft (6), and a limiting ring (9) is provided on the limiting ring (9) which is sleeved on the hollow shaft. A return spring (8) is disposed outside the spindle (6); a restraining sleeve (10) is sleeved on the outside of the hollow shaft (6), and the restraining sleeve (10) is slidably connected to a limiting ring (9); a shaft rod (11) is inserted into the bottom end of the hollow shaft (6); a groove (13) matching with a limiting ball (7) is disposed on the outer wall of the shaft rod (11); a tool mounting plate (14) is fixedly mounted on the bottom end of the shaft rod (11), and a plurality of tools (15) are disposed on the outer wall of the tool mounting plate (14).

2. The installation structure of a lawn mower cutter according to claim 1, characterized in that: A transmission connection sleeve (2) is provided on one side of the rotating head (1), and transmission parts are provided inside the rotating head (1) and the transmission connection sleeve (2).

3. The installation structure of a lawn mower cutter according to claim 1, characterized in that: The inner wall of the hollow shaft (6) is provided with a plurality of splines, and the outer wall at the top end of the shaft rod (11) is provided with a plurality of key slots (12) matching with the splines.

4. The installation structure of a lawn mower cutter according to claim 1, characterized in that: A notch (18) is provided on the inner wall at the bottom end of the restraining sleeve (10), and a spring mounting groove (17) for mounting a reset spring (8) is provided in the middle of the inner wall of the restraining sleeve (10), and a protrusion (16) is provided on the inner wall of the restraining sleeve (10) corresponding to the limiting ball (7).

5. The installation structure of a lawn mower cutter according to claim 1, characterized in that: The lever assembly (5) comprises a suspension rod (51) fixed on the outer wall at the bottom of the rotating ring (3), and a rotating seat (52) is provided at the bottom end of the suspension rod (51), a tilting rod (53) is rotatably mounted on the rotating seat (52), one end of the tilting rod (53) is provided with a hinge seat (54) fixed on the outer wall of one side of the restraining sleeve (10), and a handle (56) is fixedly provided at the other end of the tilting rod (53).

6. The installation structure of a lawn mower cutter according to claim 5, characterized in that: A sliding groove (55) is provided on one side outer wall of the tilting rod (53), and a pin is inserted into the interior of the sliding groove (55), and the pin is rotatably inserted into the interior of the rotating seat (52).

Images