CN222263658U

CN222263658U - Chassis height adjustment structure of a riding lawn mower

Info

Publication number: CN222263658U
Application number: CN202323477313.XU
Authority: CN
Inventors: 赵延辉
Original assignee: Ningbo Langhui Tools Co ltd
Current assignee: Ningbo Langhui Tools Co ltd
Priority date: 2023-12-20
Filing date: 2023-12-20
Publication date: 2024-12-31
Anticipated expiration: 2033-12-20

Abstract

The utility model belongs to the technical field of mowers and discloses a chassis height adjusting structure of a riding mower, which comprises a frame, a mowing chassis arranged at the bottom of the frame and an adjusting device for adjusting the height of the mowing chassis, wherein the adjusting device comprises an output assembly arranged on the frame and a control switch for controlling the output assembly, the output assembly comprises a first driving piece, an output rotating shaft and a driven shaft which are arranged on the first driving piece in a driving way, a transmission mechanism is connected between the output rotating shaft and the driven shaft, threads are arranged on the periphery of the driven shaft, a nut is connected with the periphery of the driven shaft in a threaded way, and a frame is arranged at the lower end of the nut.

Description

Chassis height adjusting structure of riding mower

Technical Field

The utility model belongs to the technical field of mowers, and particularly relates to a chassis height adjusting structure of a riding mower.

Background

With the increasing number of football lawns, park lawns, golf course lawns, school lawns, community lawns. In order to facilitate the management and maintenance of lawns, lawnmowers have been invented to perform large-scale lawn mowing, weeding, and the like. The mower is divided into a hand push type mower, a riding type mower and a hand-held mower according to different use occasions. The riding mower mainly comprises a frame, a mowing chassis, travelling wheels and other structures, and the mowing chassis is provided with a motor, a blade and other mechanisms for mowing. In order to enable the mower to better adapt to different mowing environments, the application range of the mower is wider, the height of a mowing chassis is required to be adjusted frequently, and a chassis height adjusting mechanism is developed for the purpose.

According to the Chinese patent with the publication number CN213694896U, the novel lawn mower comprises a frame, a lawn mowing chassis arranged at the bottom of the frame and a height adjusting device, a first connecting rod is arranged between the frame and the lawn mowing chassis, two ends of the first connecting rod are respectively in hinged fit with the frame and the lawn mowing chassis, the height adjusting device comprises a second connecting rod, an electric push rod, a distance sensor and a control switch, the second connecting rod is rotatably arranged on the frame, the lower end of the second connecting rod is in hinged fit with the lawn mowing chassis, the upper end of the second connecting rod is in hinged fit with the output end of the electric push rod, the distance sensor is arranged on the frame and is correspondingly arranged with the lawn mowing chassis, the distance sensor is electrically connected with the electric push rod, the distance sensor is used for measuring the position change of the lawn mowing chassis in the vertical direction, the control switch is electrically connected with the electric push rod, and the control switch is used for controlling the electric push rod to work.

The prior art uses a link mechanism to adjust the height of the mowing chassis, the adjusting mode is unstable, the adjustable height range is smaller, the link mechanism is complex in structure and troublesome to install, and the processing cost is high, so that improvement of the defect is needed.

Disclosure of utility model

The utility model aims at solving the problems, and provides a chassis height adjusting structure of a riding mower, which has the advantages of large adjusting range and low processing cost.

The mowing machine comprises a frame, a mowing chassis arranged at the bottom of the frame and an adjusting device for adjusting the height of the mowing chassis, wherein the adjusting device comprises an output assembly arranged on the frame and a control switch for controlling the output assembly, the output assembly comprises a first driving piece and an output rotating shaft which is arranged on the first driving piece in a driving mode, a transmission mechanism is arranged at the other end of the output rotating shaft, a driven shaft is arranged at the other end of the transmission mechanism, a transmission mechanism is connected between the output rotating shaft and the driven shaft, threads are arranged on the periphery of the driven shaft, a nut is connected with the periphery of the driven shaft in a threaded mode, a frame is arranged at the lower end of the nut, and the bottom of the frame is fixedly arranged at the upper end of the mowing chassis and drives the mowing chassis to ascend and descend through transmission between the driven shaft and the nut.

Preferably, the nut extends along the axial direction of the driven shaft to a side away from the mowing chassis.

Preferably, the second driving part is installed on the frame, the output shaft is installed on the second driving part in a driving way, the output shaft is connected with a transmission assembly in a driving way, the transmission assembly comprises a first transmission wheel connected with the output shaft and a second transmission wheel for driving a blade in the mowing chassis to rotate, the first transmission wheel is connected with the second transmission wheel through a belt or a chain, the first transmission wheel is provided with a shaft sleeve sleeved on the periphery of the output shaft, the output shaft is arranged in the shaft sleeve in a sliding way, and rotating shafts of the shaft sleeve and the second transmission wheel are rotatably installed on the frame.

Preferably, the shaft sleeve is provided with a shaft hole corresponding to the output shaft connecting part, and the cross section of the shaft hole and the cross section of the output shaft are non-circular, so that the shaft sleeve can be driven to rotate when the output shaft rotates.

Preferably, the frame is provided with a connecting hole for installing the shaft sleeve and the rotating shaft of the second driving wheel.

Preferably, rollers are arranged at two ends of the mowing chassis.

Preferably, the frame is provided with a box body, and the output assembly is arranged in the box body.

Compared with the prior art, the utility model has the beneficial effects that the forward and reverse rotation of the first driving piece is controlled by the control switch to drive the forward and reverse rotation of the output shaft, the output gear, the driven gear and the driven shaft, and the driven shaft is connected with the nuts arranged on the frame through the threads, the nuts can be driven to rotate along the axis direction of the driven shaft while the driven shaft rotates, so that the lifting function of the mowing chassis is realized, the lifting function of the mowing chassis is realized through the transmission of the bevel gear group, the structure is simpler, the cost is lower, the lifting process is more stable, and the height adjustable range is larger.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic side view of the present utility model;

FIG. 3 is a schematic side view of the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 3A;

FIG. 5 is an enlarged schematic view of the structure of FIG. 3B;

fig. 6 is a schematic perspective view of a frame.

The drawing shows that the device comprises a frame 1, a control switch 2, a mowing chassis 31, a roller 32, a roller 4, a transmission assembly 41, a first transmission wheel 411, a shaft sleeve 412, a shaft hole 42, a second transmission wheel 43, a third transmission wheel 5, a frame 51, a nut 52, a connecting hole 6, a second driving piece 61, an output shaft 7, a box body 71, a cavity 8, an output assembly 81, a first driving piece 82, an output rotating shaft 83, an output gear 84, a driven gear 85 and a driven shaft.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-6, a chassis height adjusting structure of a riding mower comprises a frame 1, a mowing chassis 31 arranged at the bottom of the frame 1 and an adjusting device for adjusting the height of the mowing chassis 31, wherein the adjusting device comprises an output component 8 arranged on the frame 1 and a control switch 2 for controlling the output component 8, the control switch 2 is arranged on a panel at the side edge of a steering wheel of the frame, the output component 8 comprises a first driving piece 81, an output rotating shaft 82 and a driven shaft 85 which are arranged on the first driving piece 81 in a driving way, a transmission mechanism is connected between the output rotating shaft 82 and the driven shaft 85, the transmission mechanism in the embodiment is a bevel gear set, the bevel gear set consists of an output gear 83 arranged on the output rotating shaft 82 and a driven gear 84 arranged on the driven shaft 85, the transmission mechanism can be replaced by a worm gear and a gear set besides the bevel gear set, the periphery of the driven shaft 85 is provided with threads, the periphery of the driven shaft 85 is connected with a nut 51 in a threaded manner, the nut 51 extends to one side far away from the mowing chassis 31 along the axial direction of the driven shaft 85, the connection between the nut 51 and the driven shaft 85 is more stable, the adjustable range is large, the processing cost is lower, the nut 51 and the driven shaft 85 penetrate through the chassis arranged on the frame 1, the lower end of the nut 51 is provided with a frame 5, the bottom of the frame 5 is fixedly arranged at the upper end of the mowing chassis 31, the output gear 83 is driven to rotate through the rotation of the output rotating shaft 82, the driven gear 84 is driven to rotate, the driven shaft 85 is driven to rotate, the nut 51 is driven to reciprocate along the axial direction of the driven shaft 85, the mowing chassis 31 can reciprocate along the axial direction of the driven shaft 85, the height between the mowing chassis 31 and the ground is adjusted, the elevation of the grass cutting chassis 31 is regulated by the forward and reverse rotation of the first driving member 81.

The second driving member 6 is arranged on the frame 1, the output shaft 61 is arranged on the second driving member 6 in a driving way, the output shaft 61 is connected with the transmission assembly 4 in a driving way, the transmission assembly 4 comprises a first driving wheel 41 connected with the output shaft 61 and a second driving wheel 42 for driving blades in the mowing chassis 31 to rotate, the third driving wheel 43 is also provided with a third driving wheel 43, and is used for being connected with another blade in the mowing chassis 31, so that the second driving wheel 42 and the third driving wheel 43 rotate to drive two blades in the mowing chassis 31 to rotate, mowing efficiency is improved, the first driving wheel 41 is connected with the second driving wheel 42 and the third driving wheel 43 through a belt or a chain, the first driving wheel 41 is provided with a shaft sleeve 411 sleeved on the periphery of the output shaft 61, the output shaft 61 is arranged in the shaft sleeve 411 in a sliding way, the shaft sleeve 411 is provided with a shaft hole 412 corresponding to the connecting part of the output shaft 61, the shaft 412 and the cross section of the output shaft 61 is a non-circular cross section, and the cross section of the shaft hole 412 and the cross section of the output shaft 61 are matched square, therefore the cross section of the output shaft 61 can drive the shaft 411 to rotate when the output shaft 61 rotates, the shaft 411 and the third driving wheel 43 rotates, the third driving wheel 43 rotates on the frame 5 and the third driving wheel 43 is not always kept at the same distance as the first driving wheel 41 and the third driving wheel 43.

In the present application, the first driving element 81 and the second driving element 6 are both motors.

The frame 5 is provided with a connecting hole 52 for installing the shaft sleeve 411 and the rotating shafts on the second driving wheel 42 and the third driving wheel 43, the shaft sleeve 411, the second driving wheel 42 and the third driving wheel 43 are installed on the frame 5, so that the shaft sleeve 411, the second driving wheel 42 and the third driving wheel 43 can reciprocate along with the frame 5, and the shaft sleeve 411 can be connected in a sliding manner through the output shaft 61, so that the frame 5 and the ground are at any height, and the rotation of the output shaft 61 can always drive the shaft sleeve 411 to rotate, so that the first driving wheel 41 is driven to rotate, and the first driving wheel 41, the second driving wheel 42 and the third driving wheel 43 are pulleys or chain wheels in the embodiment.

The frame 1 is provided with a box body 7 for protecting the output assembly 8, the box body 7 is internally provided with a cavity 71, and the output assembly 8 is arranged in the cavity 71, so that dust and grass scraps can be prevented from being attached to the output assembly 8.

The rollers 32 are arranged at the two ends of the mowing chassis 31, so that the mowing chassis 31 can move better when being stuck on the ground.

When the height is adjusted, the first driving piece 81 is operated on the control switch 2 to rotate positively and negatively to drive the output rotating shaft 82 to rotate, then the output gear 83 is driven to rotate, then the driven gear 84 is driven to rotate, then the driven shaft 85 is driven to rotate, and then the nut 51 is driven to reciprocate along the axis direction of the driven shaft 85, so that the mowing chassis 31 can reciprocate along the axis direction of the driven shaft 85, the height between the mowing chassis 31 and the ground is adjusted, and the output shaft 61 is always kept in a connected state in the shaft hole 412, so that when the second driving piece 6 is started to mow, the output shaft 61 can also drive the first driving wheel 41 on the shaft sleeve 411 to rotate, and then the second driving wheel 42 and the third driving wheel 43 are driven to rotate through the belt, so that two blades in the mowing chassis 31 can mow.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a chassis height adjusting structure of riding mower, includes frame (1), sets up chassis (31) and the adjusting device who is used for adjusting the chassis (31) height of mowing of frame (1) bottom, adjusting device is including installing output subassembly (8) and control on frame (1) output subassembly (8) control switch (2), wherein output subassembly (8) are including first driving piece (81), drive install output pivot (82) on first driving piece (81), drive mechanism is installed to output pivot (82) other end, driven shaft (85) are installed to the drive mechanism other end, driven shaft (85) periphery is equipped with the screw thread, driven shaft (85) periphery threaded connection has nut (51), nut (51) lower extreme is equipped with frame (5), frame (5) bottom fixed mounting is in chassis (31) upper end, through drive between driven shaft (85) with drive between nut (51) drive shaft (31) and lift frame (5).

2. A chassis height adjustment structure of a riding mower as claimed in claim 1, wherein said nut (51) extends along an axial direction of said driven shaft (85) to a side away from said mowing chassis (31).

3. The chassis height adjusting structure of a riding mower according to claim 1, wherein a second driving piece (6) is installed on the frame (1), an output shaft (61) is installed on the second driving piece (6) in a driving mode, the output shaft (61) is connected with a transmission assembly (4) in a driving mode, the transmission assembly (4) comprises a first transmission wheel (41) connected with the output shaft (61) and a second transmission wheel (42) for driving blades in the mowing chassis (31) to rotate, the first transmission wheel (41) and the second transmission wheel (42) are connected through a belt or a chain, a shaft sleeve (411) sleeved on the periphery of the output shaft (61) is arranged on the first transmission wheel (41), the output shaft (61) is arranged in the shaft sleeve (411) in a sliding mode, and rotating shafts of the shaft sleeve (411) and the second transmission wheel (42) are installed on the frame (5) in a rotating mode.

4. A chassis height adjusting structure of a riding mower according to claim 3, wherein said shaft housing (411) has a shaft hole (412) corresponding to a connecting portion of said output shaft (61), and said shaft hole (412) and said output shaft (61) have a non-circular cross section, so that said shaft housing (411) can be rotated when said output shaft (61) is rotated.

5. The structure according to claim 4, wherein the frame (5) has a coupling hole (52) for mounting the shaft housing (411) and the shaft of the second driving wheel (42).

6. The structure according to claim 1, wherein rollers (32) are provided at both ends of the mowing chassis (31).

7. The chassis height adjustment structure of a riding mower according to claim 1, wherein a box body (7) is mounted on the frame (1), and the output assembly (8) is mounted in the box body (7).