CN216752770U

CN216752770U - Clutch mechanism of cutter shaft of mower

Info

Publication number: CN216752770U
Application number: CN202220180303.6U
Authority: CN
Inventors: 江锦标
Original assignee: ZHEJIANG CHANGJIANG MACHINERY CO Ltd
Current assignee: ZHEJIANG CHANGJIANG MACHINERY CO Ltd
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-06-17
Anticipated expiration: 2032-01-20

Abstract

The utility model provides a clutch mechanism of a cutter shaft of a mower, and belongs to the technical field of garden machinery. The problem that the clutch mechanism of the cutter shaft of the existing mower cannot work safely and reliably enough is solved. This clutching mechanism of arbor of lawn mower, the lawn mower includes the frame, blade disc and axial link firmly the arbor on the blade disc, the lower extreme of arbor is used for linking firmly the blade, this clutching mechanism is including setting up the driving pulley on the frame, the upper end of arbor has linked firmly driven pulleys, be equipped with the hold-in range between driven pulleys and the driving pulley, a serial communication port, it has take-up pulley support and braking support to articulate on the blade disc, take-up pulley support links with the braking support mutually, and the braking support can support and lean on driven pulleys, the axial has linked firmly the take-up pulley on the take-up pulley support, it has the swing arm to articulate on the frame, the one end of swing arm has linked firmly the action bars, be equipped with the extension spring between the other end of swing arm and the braking support. The clutch mechanism of the cutter shaft of the mower has the advantages of reliable work and timely braking.

Description

Clutch mechanism of cutter shaft of mower

Technical Field

The utility model belongs to the technical field of garden machinery, and relates to a clutch mechanism, in particular to a clutch mechanism of a cutter shaft of a mower.

Background

Lawn mowers are widely used in urban landscaping and garden design, and most commonly used is lawn mowing, which generally comprises five parts: the device comprises an engine, a travelling mechanism, a blade, a handrail and a control part. The general working principle is as follows: the output shaft of the engine is provided with a blade which is driven by the engine to rotate at a high speed to trim the lawn.

After the engine of the lawn mower is started, the blade rotates at a certain speed, but when the lawn mower is driven to an operation area or passes through a non-operation area, such as a road surface among a plurality of lawns, a lawn which does not need to be trimmed, and the like, the blade of the lawn mower does no work and even affects the mowing effect and the mowing efficiency, so that the lawn mower has a clutch problem between the engine and the blade, and the clutch is generally required to be: the bonding is as secure as possible; the separation is as thorough as possible. Since incomplete separation can cause wear of the attachment if the joint is secure, which can affect the power transmission efficiency and the component life.

For example, the chinese patent document discloses a blade clutch mechanism (application No. 201220375419.1) on a mower, the mower includes a housing, an input pulley and an output pulley, the input pulley is connected to an engine, the output pulley is connected to a rotating shaft of a blade, a driving belt is connected between the input pulley and the output pulley, the driving belt is further connected to a tension pulley, and an adjusting structure capable of adjusting a relative position between the tension pulley and the housing to change a tension of the driving belt is disposed between the tension pulley and the housing. However, when the blade clutch mechanism on the mower is in power separation, the output belt pulley cannot be braked in time, so that the operation is not safe and reliable enough.

Disclosure of Invention

The utility model aims to provide a clutch mechanism of a cutter shaft of a mower, which can work reliably and brake timely, aiming at the problems in the prior art.

The purpose of the utility model can be realized by the following technical scheme: the clutch mechanism of the cutter shaft of the mower comprises a frame, a cutter head and a cutter shaft axially fixedly connected to the cutter head, wherein the lower end of the cutter shaft is used for fixedly connecting a blade, the clutch mechanism comprises a driving belt wheel arranged on the frame, the upper end of the cutter shaft is fixedly connected with a driven belt wheel, and a synchronous belt is arranged between the driven belt wheel and the driving belt wheel, and is characterized in that a tensioning wheel support and a braking support are hinged to the cutter head, the tensioning wheel support is linked with the braking support, the braking support can abut against the driven belt wheel, a tensioning wheel is axially fixedly connected to the tensioning wheel support, a swinging arm is hinged to the frame, one end of the swinging arm is fixedly connected with an operating rod, a tension spring is arranged between the other end of the swinging arm and the braking support, and when the tensioning wheel is in a tensioning state, the braking support is separated from the driven belt wheel, when the tension pulley is in a loose state, the brake bracket is abutted against the driven pulley.

When the mower stops working, the operating rod reversely swings, the tension spring drives the braking support to abut against the driven belt wheel, meanwhile, the tension wheel support reversely rotates to enable the tension wheel to be in a loose state, and the driven belt wheel and the cutter shaft timely stop rotating. Preferably, the operating rod and the swing arm are replaced by electric push rods.

In the clutch mechanism of the cutter shaft of the mower, a connecting rod is arranged between the tensioning wheel bracket and the braking bracket, and two ends of the connecting rod are respectively connected with the tensioning wheel bracket and the braking bracket. By adopting the arrangement, the transmission mechanism has the advantages of simple structure and reliable transmission.

In the clutch mechanism of the cutter shaft of the mower, the tension pulley support is fixedly connected with an anti-disengaging plate, the anti-disengaging plate is provided with an anti-disengaging part which is turned upwards and is positioned on the outer side of the tension pulley, and the anti-disengaging part is close to the outer side wall of the synchronous belt. The anti-falling part on the anti-falling plate is close to the outer side wall of the synchronous belt, so that the synchronous belt is prevented from falling off from the belt groove of the driven belt wheel, and the use reliability and safety are improved.

In the above-described clutch mechanism for a cutter shaft of a lawnmower, the retaining portions are in the form of a sheet and the number of the retaining portions is two. Adopt above-mentioned setting, have the better advantage of anticreep effect.

In the above-mentioned clutch mechanism for the cutter shaft of the mower, the edge of the tensioning wheel bracket is provided with the anti-drop part which is turned upwards and is positioned outside the tensioning wheel, and the anti-drop part is close to the outer side wall of the synchronous belt. The anti-falling part is arranged on the tensioning wheel support, and the anti-falling device has the advantage of simple and compact structure.

In the clutch mechanism of the cutter shaft of the mower, the middle part of the braking support is hinged on the cutter head, the inner side of the braking support is provided with an upward bent braking part, and the braking part can abut against the driven belt wheel. Support to realize the braking to the arbor on driven pulley through setting up foretell braking portion, have that braking effect is good and simple structure, make convenient advantage.

In the above-mentioned clutch mechanism for the cutter shaft of the mower, the brake part is fixedly connected with a brake pad. The brake block is fixedly connected to the brake part through screws, so that the brake block has a good brake effect, is convenient to replace and prolongs the service life.

In the clutch mechanism of the cutter shaft of the mower, the outer side of the braking support is provided with a connecting part which is turned upwards, the connecting part is provided with a through hole, and the other end of the swing arm is provided with a through hole and the drag hooks at the two ends of the tension spring penetrate into the corresponding through holes. The drag hooks at the two ends of the tension spring penetrate into the through holes of the brake bracket and the connecting part, and the brake bracket has the advantages of good connecting effect and convenience in disassembly and assembly.

In the clutch mechanism of the cutter shaft of the mower, the synchronous belt is a V-shaped synchronous belt.

In the clutch mechanism of the cutter shaft of the mower, the brake support is a sheet metal part and adopts a one-time stamping forming structure. By adopting the arrangement, the device has the advantages of convenient manufacture and lower manufacture cost.

In the clutch mechanism of the cutter shaft of the mower, the tensioning wheel support is a sheet metal part and adopts a one-step stamping forming structure. By adopting the arrangement, the device has the advantages of convenient manufacture and lower manufacture cost.

Compared with the prior art, the clutch mechanism of the cutter shaft of the mower has the following advantages:

1. when the mower stops working, the operating rod swings reversely, the tension spring drives the braking bracket to abut against the driven belt pulley, and simultaneously drives the tensioning wheel bracket to rotate reversely to enable the tensioning wheel to be in a loose state, so that the driven belt pulley and the cutter shaft stop rotating in time, and the mower has the advantages of reliable working, timely braking and safe use;

2. the anti-falling part on the anti-falling plate is close to the outer side wall of the synchronous belt, so that the synchronous belt is prevented from falling off from the belt groove of the driven belt wheel, and the use reliability and safety are improved;

3. the braking part is arranged to abut against the driven belt wheel to brake the cutter shaft, so that the cutter shaft braking device has the advantages of good braking effect, simple structure and convenience in manufacturing;

4. the drag hooks at the two ends of the tension spring penetrate into the through holes of the brake bracket and the connecting part, and the brake bracket has the advantages of good connecting effect and convenience in disassembly and assembly.

Drawings

Fig. 1 is a perspective view schematically illustrating a clutch mechanism of an arbor of the present lawnmower.

Fig. 2 is a perspective view of another structure of the brake carrier of the clutch mechanism.

In the figure, 1, a cutter head; 2. a cutter shaft; 3. a driving pulley; 4. a driven pulley; 5. a synchronous belt; 6. a tension wheel bracket; 7. a brake bracket; 7a, a brake part; 7b, a connecting part; 8. a tension wheel; 9. swinging arms; 10. an operating lever; 11. a tension spring; 12. a connecting rod; 13. an anti-drop plate; 14. an anti-drop part; 15. a brake pad; 16. and a through hole.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, the clutch mechanism of the cutter shaft of the mower comprises a frame, a cutter head 1 and a cutter shaft 2 axially fixedly connected to the cutter head 1, wherein the lower end of the cutter shaft 2 is used for fixedly connecting a blade, the clutch mechanism comprises a driving pulley 3 arranged on the frame, the upper end of the cutter shaft 2 is fixedly connected with a driven pulley 4, a synchronous belt 5 is arranged between the driven pulley 4 and the driving pulley 3, and the synchronous belt 5 is a V-shaped synchronous belt 5.

Articulated on blade disc 1 have take-up pulley support 6 and braking support 7, take-up pulley support 6 and braking support 7 are linked mutually, be equipped with connecting rod 12 between take-up pulley support 6 and the braking support 7, and the both ends of connecting rod 12 link to each other with take-up pulley support 6 and braking support 7 respectively, braking support 7 can support and lean on from driven pulley 4, the last axial of take-up pulley support 6 has linked firmly take-up pulley 8, it has swing arm 9 to articulate on the frame, the one end of swing arm 9 has linked firmly action bars 10, be equipped with extension spring 11 between the other end of swing arm 9 and the braking support 7, and braking support 7 breaks away from driven pulley 4 when take-up pulley 8 is in the tensioning state, when take-up pulley 8 is in lax state, braking support 7 supports and leans on from driven pulley 4.

Have linked firmly anticreep board 13 on the take-up pulley support 6, anticreep portion 14 that the book turned over upward is equipped with on anticreep board 13, and anticreep portion 14 is flaky and anticreep portion 14's quantity is two, and anticreep portion 14 is located the outside of take-up pulley 8 and anticreep portion 14 is close to in the lateral wall of hold-in range 5.

The middle part of braking support 7 articulates on blade disc 1, and the inboard of braking support 7 has brake 7a and brake 7a that upwards buckle and can support and lean on from driven pulleys 4, and the outside of braking support 7 has the connecting portion 7b that upwards turns over a book, is equipped with through-hole 16 on the connecting portion 7b, and the drag hook at the other end of swing arm 9 that is equipped with the both ends of through-hole 16 and extension spring 11 penetrates corresponding through-hole 16, has the advantage of the good and easy dismounting of excellent in connection effect.

Braking support 7 is the sheet metal component and adopts one shot forming structure, and take-up pulley support 6 is the sheet metal component and adopts one shot forming structure, has the advantage that makes conveniently and manufacturing cost is lower.

As another mode, as shown in fig. 2, the brake part 7a is fixedly connected with the brake pad 15, and the brake pad 15 is fixedly connected to the brake part 7a through a screw, so that the brake effect is good, the brake pad 15 is convenient to replace, and the service life is prolonged.

When the mower stops working, the operating rod 10 reversely swings, the tension spring 11 drives the braking support 7 to enable the braking portion 7a to abut against the driven pulley 4 to brake the cutter shaft 2, and meanwhile the tension pulley support 6 reversely rotates to enable the tensioning wheel 8 to enable the braking portion 7a to abut against the driven pulley 4 to achieve braking of the cutter shaft 2, and meanwhile the tensioning wheel support 6 is driven to reversely rotate to enable the tensioning wheel 8 to be in a loosening state, so that the driven pulley 4 and the cutter shaft 2 stop rotating in time. Through anticreep portion 14 on anticreep board 13 being close to the lateral wall of hold-in range 5, avoid the hold-in range 5 from droing in the trough of belt of driven pulley 4, improved reliability and the security of using. Preferably, the operating rod 10 and the swing arm 9 are replaced by electric push rods.

As another mode, the edge of the tensioning wheel bracket 6 is provided with the anti-falling part 14 which is turned upwards, the anti-falling part 14 is positioned outside the tensioning wheel 8, and the anti-falling part 14 is close to the outer side wall of the synchronous belt 5, so that the structure is simple and compact.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although terms such as the cutter head 1, the cutter shaft 2, the driving pulley 3, the driven pulley 4, the timing belt 5, the tension pulley holder 6, the braking holder 7, the braking portion 7a, the connecting portion 7b, the tension pulley 8, the swing arm 9, the operating lever 10, the tension spring 11, the connecting rod 12, the retaining plate 13, the retaining portion 14, the stopper 15, the through hole 16, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. Clutch of arbor of lawn mower, lawn mower include frame, blade disc (1) and axial link firmly blade disc (1) on arbor (2), the lower extreme of arbor (2) be used for linking firmly the blade, this clutch including setting up driving pulley (3) on the frame, the upper end of arbor (2) link firmly driven pulley (4), driven pulley (4) with driving pulley (3) between be equipped with hold-in range (5), its characterized in that, blade disc (1) on articulated have take-up pulley support (6) and braking support (7), take-up pulley support (6) with braking support (7) link mutually, just braking support (7) can support and lean on driven pulley (4) on, take-up pulley support (6) go up axial and link firmly take-up pulley (8), the frame on articulated swing arm (9), the one end of swing arm (9) link firmly action bars (10), the other end of swing arm (9) with brake support (7) between be equipped with extension spring (11), and when take-up pulley (8) be in the tensioning state brake support (7) break away from driven pulley (4), when take-up pulley (8) be in the lax state, brake support (7) support and lean on driven pulley (4).

2. The clutch mechanism of the cutter shaft of the mower according to claim 1, wherein a connecting rod (12) is arranged between the tension wheel bracket (6) and the brake bracket (7), and both ends of the connecting rod (12) are respectively connected with the tension wheel bracket (6) and the brake bracket (7).

3. The clutch mechanism of the cutter shaft of the grass cutter according to claim 1, characterized in that a retaining plate (13) is fixedly connected to the tension pulley support (6), a retaining part (14) which is folded upwards is arranged on the retaining plate (13), the retaining part (14) is positioned outside the tension pulley (8), and the retaining part (14) is close to the outer side wall of the synchronous belt (5).

4. The clutch mechanism of the cutter shaft of the mower according to claim 3, wherein the retaining portion (14) is plate-shaped and the number of the retaining portions (14) is two.

5. The clutch mechanism of the cutter shaft of the mower according to claim 1, wherein an edge of the tension pulley holder (6) is provided with a retaining portion (14) which is folded upwards, the retaining portion (14) is positioned outside the tension pulley (8), and the retaining portion (14) is close to an outer side wall of the timing belt (5).

6. The clutch mechanism of the cutter shaft of the mower as claimed in claim 1 or 2 or 3 or 4 or 5, wherein the middle part of the brake bracket (7) is hinged on the cutter head (1), the inner side of the brake bracket (7) is provided with an upward bent brake part (7a), and the brake part (7a) can abut against the driven pulley (4).

7. Clutch mechanism for the cutter shaft of a lawn mower as claimed in claim 6, characterized in that the brake part (7a) has attached thereto a brake pad (15).

8. The clutch mechanism of the cutter shaft of the mower according to claim 2, wherein the brake bracket (7) is provided with a connecting part (7b) which is turned upwards at the outer side, a through hole (16) is formed in the connecting part (7b), a through hole (16) is formed in the other end of the swing arm (9), and the draw hooks at the two ends of the tension spring (11) penetrate into the corresponding through hole (16).

9. The clutch mechanism of the cutter shaft of the mower according to claim 1, 2, 3, 4 or 5, wherein the timing belt (5) is a V-shaped timing belt (5).

10. The clutch mechanism of the cutter shaft of the mower according to claim 1, 2, 3, 4 or 5, characterized in that the brake bracket (7) and the tension pulley bracket (6) are both made of sheet metal parts and are both in a one-step stamping forming structure.