CN218868748U

CN218868748U - Riding type mower with reverse gear cutting prevention device

Info

Publication number: CN218868748U
Application number: CN202122616217.3U
Authority: CN
Inventors: 赵延辉
Original assignee: Ningbo Langhui Tools Co ltd
Current assignee: Ningbo Langhui Tools Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2023-04-18
Anticipated expiration: 2031-10-29

Abstract

The utility model discloses a cutting device's riding mower is prevented to area reverse gear, including the lawn mower body, the lawn mower body is equipped with power device and mowing mechanism, power device's output is connected with clutch, mowing mechanism passes through clutch and is connected with the power device transmission, clutch is including linking firmly the fixed disk in the lawn mower body, the one end fixedly connected with coil of fixed disk, rotate on the coil and install the initiative friction disk, the bent axle fixed connection of initiative friction disk and power device, fixed disk fixedly connected with brake disc, be formed with the accommodation space between brake disc and the initiative friction, power device's bent axle passes through bearing I and installs the support, the support is connected with passive friction disk through the elastic component, passive friction disk can be in the accommodation space from top to bottom movable, install drive wheel I on the support, be equipped with the safety switch of control coil break-make on the lawn mower body, through increasing the safety control switch, realize opening and stopping of blade, the security performance of lawn mower has been improved greatly.

Description

Riding type mower with reverse gear cutting prevention device

Technical Field

The utility model relates to a technical field of lawn mower, in particular to take reversing gear to prevent cutting device's striding type lawn mower.

Background

The safety of the lawn mower is the first one, firstly, the safety in use and the convenience in operation are considered, an operator can be protected from being injured when an accident or misoperation occurs, and secondly, the requirement on the mowing performance is the basic requirement on the lawn mower. However, the design of the existing lawn mower mainly focuses on improving mowing performance, neglects the requirement on operation safety, and although a part of structures have safety protection design, various unexpected factors are not completely considered, so that the existing lawn mower has more or less defects and certain potential safety hazards, for example, when the existing lawn mower moves forwards and backwards in a gear, a mowing mechanism can normally operate, but because the existing lawn mower does not generally need to perform mowing operation when backing, a large amount of electric energy is wasted, and meanwhile, when backing, a blade performs mowing action, because the visual field of a driver is limited, if the driver accidentally hits a person, serious consequences can occur due to the operation of the mowing mechanism, so that the safety of the existing lawn mower is low.

Disclosure of Invention

The utility model aims at providing a striding type lawn mower of cutting device is prevented in area reversing gear through increasing safety switch, realizes opening of blade and stops, has improved the security performance of lawn mower greatly.

The above technical purpose of the present invention can be achieved by the following technical solutions: a riding type mower with a reverse gear cutting-preventing device comprises a mower body, wherein the mower body is provided with a power device and a mowing mechanism, the output end of the power device is connected with a clutch device, the mowing mechanism is in transmission connection with the power device through the clutch device, the clutch device comprises a fixed disc fixedly connected to the mower body, one end of the fixed disc is fixedly connected with a coil, an active friction disc is rotatably mounted on the coil or the fixed disc, the active friction disc is fixedly connected with a crankshaft of the power device, the fixed disc is fixedly connected with a brake disc at one end of the active friction disc, an accommodating space is formed between the brake disc and the active friction disc, a support at the lower end of the accommodating space is mounted on the crankshaft of the power device through a bearing I, the support is connected with a passive friction disc accommodated in the accommodating space through an elastic piece, the passive friction disc can move up and down in the accommodating space, a transmission wheel I which rotates synchronously with the support is mounted on the support, a transmission wheel II for driving the mowing mechanism to act is arranged on the mowing mechanism, the transmission wheel I is in transmission connection with the transmission wheel II, and a safety switch for controlling the on-off state of the coil is arranged on the mower body.

Furthermore, the driving friction disc is coaxially arranged with the coil, and the driving friction disc is rotatably mounted on the coil through a bearing II.

Further, the driving friction disc comprises a central shaft and a retainer ring coaxially arranged on the periphery of the central shaft, an opening for the coil part to extend into is formed between the central shaft and the retainer ring, and the top end of the retainer ring is higher than the bottom end of the coil.

Furthermore, the elastic part is a spring piece, an inner ring of the spring piece is fixedly connected with the passive friction disc, an outer ring of the spring piece is fixedly connected with the support or the outer ring of the spring piece is fixedly connected with the passive friction disc, and an inner ring of the spring piece is fixedly connected with the support.

Furthermore, a through hole for the support to partially extend into is formed in the center of the brake disc, the top of the support extends into the through hole, and the top end face of the support is lower than the top end face of the brake disc.

Furthermore, the fixed disk is circumferentially provided with a plurality of bolts, and the brake disc is fixedly arranged on the fixed disk through the bolts.

To sum up, the utility model discloses following beneficial effect has:

through increasing safety switch, realize opening of blade and stop, improved the security performance of lawn mower greatly, this clutch's of lawn mower concrete principle as follows: in an initial state (namely when the coil is not electrified), the passive friction disc is separated from the active friction disc under the action of the elastic piece, meanwhile, the lower end face of the passive friction disc is tightly attached to the brake disc, the motor idles, and power cannot be transmitted to the passive friction disc through the active friction disc, so that the blade cannot rotate; when the coil is electrified, the electromagnetic force attracts the passive friction disc upwards, the passive friction disc is separated from the brake disc at the moment, the passive friction disc is attached to the active friction disc, transmission is realized through friction, the engine crankshaft is transmitted to the passive friction disc through the active friction disc, and then the engine crankshaft is output to the mowing blade through the transmission wheel, so that the mowing effect is realized; when the coil is powered off, the passive friction disc is separated from the active friction disc under the action of the elastic piece, the passive friction disc is attached to the brake disc again, the engine stops outputting power to the passive friction disc, the passive friction disc realizes rapid braking through the brake disc, and the mowing blade stops rotating rapidly.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of the clutch device of the present invention.

Fig. 3 is a sectional view of the clutch device of the present invention.

In the figure: 1. a mower body; 11. a safety switch; 2. a power plant; 3. a mowing mechanism; 31. a driving wheel II; 4. a clutch device; 41. fixing the disc; 411. a bolt; 42. a coil; 421. a bearing II; 43. an active friction disk; 431. a central shaft; 432. a retainer ring; 44. a brake disc; 45. an accommodating space; 46. a support; 461. a bearing I; 462. an elastic member; 463. riveting; 47. a passive friction disk; 48. a driving wheel I.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1-3, the riding mower with the reverse gear cutting-preventing device comprises a mower body 1, wherein the mower body 1 is provided with a power device 2 and a mowing mechanism 3, the power device 2 is an engine, the output end of the power device 2 is connected with a clutch device 4, and the mowing mechanism 3 is in transmission connection with the power device 2 through the clutch device 4.

Clutch 4 includes fixed connection in the fixed disk 41 of lawn mower body 1, the one end fixedly connected with coil 42 of fixed disk 41, the utility model discloses well this coil 42 is located the lower extreme of fixed disk 41, and the top terminal surface of coil 42 passes through glue fixed connection with the bottom terminal surface of fixed disk 41, certainly also can adopt other fixed connection modes to connect, rotate on coil 42 or the fixed disk 41 and install initiative friction disk 43, initiative friction disk 43 and power device 2's bent axle fixed connection, initiative friction disk 43 and the coaxial setting of coil 42, the utility model discloses in, this initiative friction disk 43 rotates through II 421 of bearing and installs in coil 42.

A brake disc 44 is fixedly connected to one end, located on the driving friction disc 43, of the fixed disc 41, specifically, a plurality of bolts 411 are arranged on the circumference of the fixed disc 41, the brake disc 44 is fixedly mounted on the fixed disc 41 through the bolts 411, an accommodating space 45 is formed between the brake disc 44 and the driving friction, the accommodating space 45 is a space between the bottom end face of the driving friction disc 43 and the top end face of the brake disc 44, a support 46 located at the lower end of the accommodating space 45 is mounted on a crankshaft of the power device 2 through a bearing i 461, that is, the top end face of the support 46 is lower than the top end face of the brake disc 44, the support 46 is connected with a driven friction disc 47 accommodated in the accommodating space 45 through an elastic member 462, the driven friction disc 47 can move up and down in the accommodating space 45, a driving wheel i 48 which rotates synchronously with the support 46 is mounted on the support 46, a driving wheel ii 31 which drives the mowing mechanism 3 to move is arranged on the mowing mechanism 3, the driving wheel i 48 is in transmission connection with the driving wheel ii 31 through a transmission belt, and a safety switch 11 which controls the on the mower body 1 to switch on and off the control coil 42.

The support 45 is connected to an engine crankshaft through a bearing I461, namely, the axial position of the support 45 is fixed, the passive friction disc 47 is telescopically connected to the support 45 through an elastic member 462, the engine crankshaft does not drive the support 45 to rotate in the process of driving the active friction disc 43 to rotate, only when the passive friction disc 47 is attached to the active friction disc 43, transmission is achieved through friction, the engine crankshaft is transmitted to the passive friction disc 47 through the active friction disc 43, and at the moment, the support 45 can rotate along with the passive friction disc 47.

The driving friction disc 43 comprises a central shaft 431 and a retaining ring 432 coaxially arranged on the periphery of the central shaft 431, an opening for the coil 42 to partially extend is formed between the central shaft 431 and the retaining ring 432, the top end of the retaining ring 432 is higher than the bottom end of the coil 42, and dust or grass debris is prevented from entering the coil 42 to damage the bearing II 421 by the aid of the retaining ring 432.

The elastic component 462 is a spring piece, the inner circle of spring piece and passive friction disc 47 fixed connection, the outer circle of spring piece and support 46 fixed connection or the outer circle of spring piece and passive friction disc 47 fixed connection, the inner circle of spring piece and support 46 fixed connection, the utility model discloses in, the inner circle of this spring piece passes through rivet 463 fixed connection in passive friction disc 47, and the outer circle of spring piece passes through another rivet 463 fixed connection in support 46, and this rivet 463 can also adopt other fastener certainly.

The center of the brake disc 44 is provided with a through hole for the bracket 46 to partially extend into, the top of the bracket 46 extends into the through hole, and the top end surface of the bracket 46 is lower than the top end surface of the brake disc 44.

Through increasing safety switch 11, realize opening of blade and stop, improved the security performance of lawn mower greatly, this clutch 4's of lawn mower concrete principle as follows: in an initial state (i.e. when the coil 42 is not energized), the passive friction disc 47 is in a separated state from the active friction disc 43 under the action of the elastic member 462, meanwhile, the lower end face of the passive friction disc 47 is tightly attached to the brake disc 44, the motor rotates in an idle mode, power cannot be transmitted to the passive friction disc 47 through the active friction disc 43, and therefore the blade cannot rotate; when the coil 42 is electrified, the electromagnetic force attracts the driven friction disc 47 upwards, the driven friction disc 47 is separated from the brake disc 44 at the moment, the driven friction disc 47 is attached to the driving friction disc 43, transmission is realized through friction, and the engine crankshaft is transmitted to the driven friction disc 47 through the driving friction disc 43 and then is output to the mowing blade through the transmission wheel, so that the mowing effect is realized; when the coil 42 is powered off, the passive friction disc 47 is separated from the active friction disc 43 under the action of the elastic member 462, the passive friction disc 47 is attached to the brake disc 44 again, the engine stops outputting power to the passive friction disc 47, the passive friction disc 47 realizes rapid braking through the brake disc 44, the mowing blade stops rotating rapidly, when the gear is shifted and moves forwards, the mowing mechanism 3 works normally, and when the reverse gear is shifted, the safety switch 11 is triggered, and the blade of the mowing mechanism 3 stops automatically.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims

1. The utility model provides a take striding type lawn mower of cutting device is prevented in reverse gear, includes lawn mower body (1), lawn mower body (1) is equipped with power device (2) and mowing mechanism (3), the output of power device (2) is connected with clutch (4), mowing mechanism (3) are connected with power device (2) transmission through clutch (4), its characterized in that: the clutch device (4) comprises a fixed disc (41) fixedly connected with the mower body (1), one end of the fixed disk (41) is fixedly connected with a coil (42), a driving friction disk (43) is rotatably arranged on the coil (42) or the fixed disk (41), the driving friction disc (43) is fixedly connected with a crankshaft of the power device (2), one end of the fixed disc (41) positioned on the driving friction disc (43) is fixedly connected with a brake disc (44), an accommodating space (45) is formed between the brake disc (44) and the driving friction disc, a bracket (46) positioned at the lower end of the accommodating space (45) is arranged on a crankshaft of the power device (2) through a bearing I (461), the bracket (46) is connected with a passive friction disc (47) accommodated in the accommodating space (45) through an elastic piece (462), the passive friction disc (47) can move up and down in the accommodating space (45), a driving wheel I (48) which synchronously rotates with the bracket (46) is arranged on the bracket, the mowing mechanism (3) is provided with a driving wheel II (31) for driving the mowing mechanism (3) to move, the driving wheel I (48) is in transmission connection with the driving wheel II (31) through a transmission belt, the mower body (1) is provided with a safety switch (11) for controlling the on-off of the coil (42).

2. The riding mower with reverse cutting prevention device of claim 1, further comprising: the driving friction disc (43) is coaxially arranged with the coil (42), and the driving friction disc (43) is rotatably mounted on the coil (42) through a bearing II (421).

3. The riding mower with reverse cutting prevention device of claim 2, further comprising: the driving friction disc (43) comprises a central shaft (431) and a retaining ring (432) coaxially arranged on the periphery of the central shaft (431), an opening for the coil (42) to partially extend into is arranged between the central shaft (431) and the retaining ring (432), and the top end of the retaining ring (432) is higher than the bottom end of the coil (42).

4. The riding mower with reverse cutting prevention device of claim 1, further comprising: the elastic piece (462) is a spring piece, an inner ring of the spring piece is fixedly connected with the passive friction disc (47), an outer ring of the spring piece is fixedly connected with the support (46) or the outer ring of the spring piece is fixedly connected with the passive friction disc (47), and the inner ring of the spring piece is fixedly connected with the support (46).

5. The riding mower with reverse cutting prevention device of claim 1, further comprising: the center of the brake disc (44) is provided with a through hole for the support (46) to partially extend into, the top of the support (46) extends into the through hole, and the top end face of the support (46) is lower than the top end face of the brake disc (44).

6. The riding mower with reverse cutting prevention device of claim 1, further comprising: the fixed disk (41) is circumferentially provided with a plurality of bolts (411), and the brake disk (44) is fixedly mounted on the fixed disk (41) through the bolts (411).