CN212588944U

CN212588944U - A transmission structure and weeder for weeder

Info

Publication number: CN212588944U
Application number: CN202021183393.1U
Authority: CN
Inventors: 王军平; 梁桂清; 唐俊伟
Original assignee: GUILIN HIGH-TECH ZONE KEFENG MACHINERY CO LTD
Current assignee: GUILIN HIGH-TECH ZONE KEFENG MACHINERY CO LTD
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-02-26
Anticipated expiration: 2030-06-23

Abstract

The utility model relates to an agricultural machine field specifically discloses a transmission structure for weeder, which comprises an engine, centrifugal clutch, the arbor, axletree and reducing gear box, centrifugal clutch includes the carousel of fixed mounting on the engine output shaft, and with the outer dish of carousel complex clutch, the output shaft can drive the carousel and rotate, so that the friction hoof piece on the carousel under the effect of centrifugal force with the inner wall friction fit of the outer dish of clutch, thereby drive the outer dish of clutch and rotate, the upper end and the outer dish transmission of clutch of arbor are connected, the blade that is used for cutting weeds is installed to the lower extreme, the input shaft and the outer dish transmission of clutch of reducing gear box are connected, and the reducing gear box is connected with the middle part transmission of axletree, the wheel has been installed at the both ends of axletree. The utility model also discloses a weeder, the utility model discloses a drive structure and weeder for weeder, easy operation is convenient for control wheel and blade.

Description

A transmission structure and weeder for weeder

Technical Field

The utility model relates to an agricultural machine technical field especially relates to a transmission structure and weeder for weeder.

Background

The weeding machine is also called as a mower, a lawnmower, a trimmer and the like. The weeder is a mechanical tool for trimming vegetation, and drives a blade to rotate through an engine, so that the vegetation is cut by utilizing the high rotating speed of the blade. Adopt the weeder to carry out weeding operation, not only reduced workman's weeding operation's working strength, still very big improvement weeding work efficiency, reduced the input of manpower. But the driving structure design of the wheels and the blades of the existing weeding machine is not reasonable enough, and the control structure is complex, so that the operation of the weeding machine is not convenient enough.

Disclosure of Invention

The utility model discloses aim at solving one of the above-mentioned technical problem at least, provide a transmission structure and weeder for weeder, easy operation is convenient for control wheel and blade.

In order to realize the purpose, the utility model discloses a technical scheme be: a transmission structure for a weeding machine comprises an engine, a centrifugal clutch, a cutter shaft, a wheel shaft and a reduction box, wherein the centrifugal clutch comprises a rotary disc fixedly mounted on an output shaft of the engine and a clutch outer disc matched with the rotary disc, the output shaft can drive the rotary disc to rotate so that a friction shoe block on the rotary disc is in friction fit with the inner wall of the clutch outer disc under the action of centrifugal force to drive the clutch outer disc to rotate, the upper end of the cutter shaft is in transmission connection with the clutch outer disc, a blade for cutting weeds is mounted at the lower end of the cutter shaft, an input shaft of the reduction box is in transmission connection with the clutch outer disc, the reduction box is in transmission connection with the middle of the wheel shaft to drive the wheel shaft to rotate, and wheels are mounted at two ends of.

Preferably, the middle part of wheel be provided with the axletree normal running fit axle sleeve, the retaining member is installed to detachable on the axle sleeve, can fix axle sleeve and axletree locking through the retaining member to make the axletree drive the synchronous rotation of wheel.

Preferably, still including installing the outside cutter arbor cover of arbor, the both ends of cutter arbor cover all set up with arbor normal running fit's bearing.

Preferably, the upper end of the cutter shaft is provided with a spline shaft, the middle part of the bottom end of the clutch outer disc is provided with a spline hole, and the spline shaft is matched with the spline hole and is locked and fixed with the clutch outer disc through a screw.

Preferably, the upper end of the cutter shaft is provided with a first driven wheel, and the first driven wheel is in transmission connection with the clutch outer disc through a first transmission belt.

Preferably, the upper end of arbor and the first running gear normal running fit of following, and the cover is equipped with first clutch, and the upper end of arbor is provided with first spacing groove along its length direction, be provided with on the first clutch with first spacing groove sliding fit's first lug to make first clutch only can follow its axis direction motion relatively the arbor, be provided with first fixture block on the first clutch, the lower extreme of the first driving wheel be provided with can with first fixture block joint complex first draw-in groove, fixedly connected with the first in command on the first clutch.

Preferably, the input shaft is provided with a second driven wheel, and the second driven wheel is in transmission connection with the clutch outer disc through a second transmission belt.

Preferably, the input shaft is sleeved with a second clutch, a second limiting groove is formed in the input shaft along the length direction of the input shaft, a second protruding block in sliding fit with the second limiting groove is arranged on the second clutch, so that the second clutch can move along the axis direction of the input shaft relative to the input shaft, a second clamping block is arranged on the second clutch, a second clamping groove capable of being in clamping fit with the second clamping block is formed in the first driven wheel, and a second handle is fixedly connected to the second clutch.

The utility model also discloses a weeder, including the frame, and the aforesaid is arbitrary the transmission structure.

Preferably, the wheel comprises a front wheel and two rear wheels, the front wheel is rotatably mounted at the front end of the frame through the support frame, the wheel shaft is rotatably mounted at the rear end of the frame, and the two rear wheels are mounted at the two ends of the wheel shaft.

The beneficial effects are that: compared with the prior art, the utility model discloses a transmission structure and weeder for weeder adopt centrifugal clutch, can realize the drive to wheel and arbor through the rotational speed of control engine output shaft, when needs operation, can be through the throttle that increases the engine, make the rotational speed of output shaft increase to a definite value, the friction hoof piece on the carousel outwards opens and with the inner wall friction fit of clutch outer dish under the effect of centrifugal force, thereby drive clutch outer dish and rotate, and then drive the arbor through clutch outer dish and rotate, to realize the cutting of weeds, and drive the wheel axle through clutch outer dish and rotate, in order to drive the weeder and advance, when the operation stops or meets emergency, can be through reducing the throttle of engine, make the rotational speed of output shaft reduce to the idle state, carousel and clutch outer dish are in the separation state this moment, therefore, the cutter shaft and the wheel shaft stop rotating, the blade and the wheel can be controlled to rotate only by controlling the accelerator of the engine during operation, and the cutter shaft and the wheel shaft stop rotating device is simple in structure and convenient to operate.

Drawings

The following detailed description of embodiments of the invention is provided in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic view of a first transmission structure of the present invention;

fig. 2 is a schematic view of one of the driving structures of the cutter shaft of the present invention;

fig. 3 is a schematic view of one driving structure of the wheel axle of the present invention;

FIG. 4 is a schematic view of an installation structure of the centrifugal clutch according to the present invention;

fig. 5 is a schematic view of a second transmission structure of the present invention;

FIG. 6 is an enlarged schematic view of the structure at A in FIG. 5;

FIG. 7 is a schematic view of a third drive configuration of the present invention;

fig. 8 is a schematic structural view of the weeding machine of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or there can be intervening components, and when a component is referred to as being "disposed in the middle," it is not just disposed in the middle, so long as it is not disposed at both ends, but rather is within the scope of the middle. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 7, a transmission structure for a weeding machine comprises an engine 1, a centrifugal clutch 2, a cutter shaft 3, a wheel shaft 4 and a reduction box 5, wherein the centrifugal clutch 2 comprises a rotary disc 6 fixedly mounted on an output shaft of the engine 1 and a clutch outer disc 7 matched with the rotary disc 6, specifically, the engine 1 is provided with an accelerator for controlling the operation of the engine, the rotary disc 6 is disc-shaped, the middle part of the rotary disc 6 is provided with a mounting hole with a key groove, the output shaft is matched with the mounting hole and is provided with a spline matched with the key groove, the rotary disc 6 is locked and fixed on the output shaft through a screw 14, and the rotary disc 6 is connected with a friction shoe through a tension spring, when the engine 1 works, the output shaft can drive the rotary disc 6 to rotate, so that the friction shoe on the rotary disc 6 is outwards opened under the action of centrifugal force, and then drive clutch outer dish 7 to rotate, the upper end of arbor 3 is connected with clutch outer dish 7 transmission, the lower extreme of arbor 3 is installed the blade 8 that is used for cutting weeds to make clutch outer dish 7 can drive arbor 3 to rotate, the input shaft of reducing gear box 5 is connected with clutch outer dish 7 transmission, and reducing gear box 5 is connected with the middle part transmission of axletree 4, so that clutch outer dish 7 can drive axletree 4 to rotate, the both ends of axletree 4 are installed the wheel.

The utility model discloses a drive structure for weeder can realize the drive to wheel and arbor 3 through the rotational speed of control engine 1 output shaft, when needs operation, can be through increasing the throttle of engine 1, when making the rotational speed of output shaft increase to a definite value, the friction hoof piece on carousel 6 outwards opens and with the inner wall friction fit of clutch outer dish 7 under the effect of centrifugal force, thereby drive clutch outer dish 7 and rotate, and then drive arbor 3 through clutch outer dish 7 and rotate, in order to realize weeds cutting, and drive axletree 4 through clutch outer dish 7 and rotate, in order to drive the weeder to march, when the operation stops or meets emergency, can be through reducing the throttle of engine 1, make the rotational speed of output shaft reduce to the idle state, carousel 6 is in the separation state with clutch outer dish 7 this moment, thereby make arbor 3 and axletree 4 stall, when the control device is operated, the blade 8 and the wheel can be controlled to rotate only by controlling the accelerator of the engine 1, and the control device is simple in structure and convenient to operate.

In a preferred embodiment, the middle part of the wheel can be provided with a shaft sleeve 9 which is rotatably matched with the wheel shaft 4, a locking member is detachably mounted on the shaft sleeve 9, the shaft sleeve 9 and the wheel shaft 4 can be locked and fixed through the locking member, so that the wheel shaft 4 drives the wheel to rotate synchronously, specifically, two ends of the wheel shaft 4 are provided with insertion parts which are in insertion fit with the shaft sleeve 9, the diameter of the insertion parts is smaller than that of the wheel shaft 4, when the wheel is installed, the insertion parts of the wheel shaft 4 are inserted into the shaft sleeve 9 and then locked through screws, so that the wheel can be rotatably mounted on the wheel shaft 4, the wheel is limited along the axial direction of the wheel shaft 4, and the wheel shaft 4 and the shaft sleeve 9 are correspondingly provided with fixing holes, the locking member can be a bolt and a lock catch, when in use, the bolt can penetrate through the fixing holes on the wheel shaft 4 and the shaft sleeve, the bolt is locked on the shaft sleeve 9 through the lock catch, so that the wheel is locked on the wheel shaft 4, the wheel shaft 4 drives the wheel to rotate, when the weeding machine needs to be pushed to move, the lock catch and the bolt can be detached, the wheel can rotate relative to the wheel shaft 4, and the weeding machine can be pushed conveniently.

Further, the drive structure of weeder can also be including installing at the outside cutter arbor sleeve 11 of arbor 3, and the upper end of cutter arbor sleeve 11 can be through screw detachable fixed mounting in the frame of weeder, and the both ends of cutter arbor sleeve 11 all set up with 3 normal running fit's of arbor bearing 12, establish 3 covers of arbor inside it through cutter arbor sleeve 11 to play the guard action to arbor 3, and through being provided with bearing 12, can improve 3 pivoted stability of arbor.

As shown in fig. 5 and 6, in one embodiment, the upper end of the cutter shaft 3 may be provided with a spline shaft 13, the middle of the bottom end of the clutch outer disk 7 is provided with a spline hole, the spline shaft 13 is matched with the spline hole and is locked and fixed with the clutch outer disk 7 through a screw 14, so that the clutch outer disk 7 is fixedly installed at the upper end of the cutter shaft 3, and the output shaft drives the clutch outer disk 7 to rotate, so that the cutter shaft 3 is driven to rotate.

The upper end of arbor 3 can be provided with first from driving wheel 15, is provided with first connecting portion on the outer dish 7 of clutch, and first from driving wheel 15 is connected with the transmission of the first connecting portion on the outer dish 7 of clutch through first driving belt 16 to make the outer dish 7 of clutch can drive arbor 3 when rotating through first driving belt 16 and rotate.

In another preferred embodiment, as shown in fig. 7 and fig. 1, the upper end of the arbor 3 can be rotatably engaged with the first driven wheel 15, and is sleeved with a first clutch 17, specifically, as shown in fig. 1, the first clutch 17 can be installed below the driven wheel 15, or as shown in fig. 7, the first clutch 17 can be installed above the driven wheel 15, and as shown in fig. 1, the upper end of the arbor 3 is provided with a first limit groove 18 along the length direction thereof, the first clutch 17 is provided with a first projection slidably engaged with the first limit groove 18, so that the first clutch 17 can only move along the axial direction thereof relative to the arbor 3, the first clutch 17 is provided with a first block 19, the lower end of the first driven wheel 15 is provided with a first block 20 capable of being engaged with the first block 19, the first clutch 17 is fixedly connected with a first handle 21, and when it is necessary to control the rotation of the arbor 3, can slide towards first driven wheel 15 along the axis direction of arbor 3 through first handle 21 drive first clutch 17, make first fixture block 19 and the cooperation of first draw-in groove 20 joint, thereby make first driven wheel 15 can drive arbor 3 and rotate, when needs control arbor 3 stall, can drive first clutch 17 through first handle 21 along the axis direction of arbor 3 first driven wheel 15 slip dorsad, make first fixture block 19 and the separation of first draw-in groove 20, arbor 3 can rotate from first driven wheel 15 relatively, so that first driven wheel 15 can not drive arbor 3 in the pivoted in-process and rotate, through being provided with first clutch 17, can control the rotation of arbor 3 alone, and control is more convenient.

In a more preferable embodiment, the input shaft may be provided with a second driven wheel 22, the clutch outer disc 7 is provided with a second connecting portion, and the second driven wheel 22 is in transmission connection with the second connecting portion on the clutch outer disc 7 through a second transmission belt 23, so that the clutch outer disc 7 can drive the input shaft of the reduction gearbox 5 to rotate through the second transmission belt 23 when rotating.

Further, the upper end of the input shaft is rotatably matched with the second driven wheel 22, and is sleeved with a second clutch 24, a second limit groove 25 is arranged on the input shaft along the length direction of the input shaft, a second bump in sliding fit with the second limit groove 25 is arranged on the second clutch 24, so that the second clutch 24 can only move along the axial direction of the input shaft relative to the input shaft, a second clamping block 26 is arranged on the second clutch 24, a second clamping groove 27 capable of being in clamping fit with the second clamping block 26 is arranged on the first driven wheel 15, a second handle 28 is fixedly connected to the second clutch 24, when the wheel shaft 4 needs to be controlled to rotate, the first clutch 17 can be driven by the second handle 28 to slide towards the second driven wheel 22 along the axial direction of the cutter shaft 3, so that the second clamping block 26 is in clamping fit with the second clamping groove 27, so that the second driven wheel 22 can drive the input shaft to rotate, rotate with drive wheel axle 4, when needing control wheel axle 4 stall, can drive second clutch 24 through second handle 28 along the axis direction of arbor 3 and slide from driving wheel 22 to the second dorsad, make second fixture block 26 and the separation of second draw-in groove 27, thereby make the input shaft can rotate from driving wheel 22 relatively to the second, so that second from driving wheel 22 can not drive arbor 3 and rotate, and then control wheel axle 4 stall, through being provided with second clutch 24, can control wheel axle 4's rotation alone, and control is more convenient.

As shown in fig. 8, the utility model also discloses a weeding machine, which comprises a frame 29 and any one of the transmission structures.

The utility model discloses a weeder can realize the drive to wheel and arbor 3 through the rotational speed of control engine 1 output shaft, when needs operation, can be through increasing the throttle of engine 1, when making the rotational speed of output shaft increase to a definite value, the friction shoe on carousel 6 outwards opens and with the inner wall friction fit of clutch outer dish 7 under the effect of centrifugal force, thereby drive clutch outer dish 7 and rotate, and then drive arbor 3 through clutch outer dish 7 and rotate, so as to realize the cutting of weeds, and drive axletree 4 through clutch outer dish 7 and rotate, in order to drive the weeder to march, when the operation stops or meets emergency, can be through reducing the throttle of engine 1, make the rotational speed of output shaft reduce to the idle state, carousel 6 is in the separation state with clutch outer dish 7 this moment, thereby make 3 and axletree 4 stall, when the control device is operated, the blade 8 and the wheel can be controlled to rotate only by controlling the accelerator of the engine 1, and the control device is simple in structure and convenient to operate.

Preferably, the wheels comprise a front wheel 30 and two rear wheels 31, the front wheel 30 is rotatably mounted at the front end of the frame 29 through a support frame 32, the wheel shaft 4 is rotatably mounted at the rear end of the frame 29, the two rear wheels 31 are mounted at two ends of the wheel shaft 4, handrails can be arranged on the frame 29, the moving direction of the weeding machine can be controlled conveniently through the handrails, the wheel design of two wheels behind the front single wheel is adopted, compared with the four-wheel layout, the three-wheel layout has smaller resistance, the walking of the weeding machine is facilitated, the efficiency is higher, and meanwhile, the walking of the weeding machine on rugged terrain is facilitated.

Preferably, the front end of frame 29 is provided with fender grass-guard towards the slope, and when carrying out the weeding operation, fender grass-guard can be pressed down the vegetation of waiting to cut and make the certain angle of vegetation slope to make the vegetation pass through the blade 8 department of the neat and orderly entering frame 29 bottom of feed inlet, so that blade 8 cuts the vegetation, has improved the regularity of weeding efficiency and cutting back vegetation.

The above embodiments are only used for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of the technical solutions of the present invention.

Claims

1. A transmission structure for a weeding machine is characterized by comprising an engine (1), a centrifugal clutch (2), a cutter shaft (3), a wheel shaft (4) and a reduction gearbox (5), wherein the centrifugal clutch (2) comprises a rotary disc (6) fixedly installed on an output shaft of the engine (1) and a clutch outer disc (7) matched with the rotary disc (6), the output shaft can drive the rotary disc (6) to rotate so that a friction shoe on the rotary disc (6) is in friction fit with the inner wall of the clutch outer disc (7) under the action of centrifugal force to drive the clutch outer disc (7) to rotate, the upper end of the cutter shaft (3) is in transmission connection with the clutch outer disc (7), a cutter blade (8) used for cutting weeds is installed at the lower end of the cutter shaft (3), an input shaft of the reduction gearbox (5) is in transmission connection with the clutch outer disc (7), and the reduction gearbox (5) is in transmission connection with the middle of the wheel shaft (4), so as to drive the wheel shaft (4) to rotate, and wheels are arranged at the two ends of the wheel shaft (4).

2. A transmission structure for a weeding machine as claimed in claim 1, wherein the middle part of the wheel is provided with a sleeve (9) which is rotatably fitted with the wheel shaft (4), and a locking member is detachably mounted on the sleeve (9), and the sleeve (9) and the wheel shaft (4) can be locked and fixed by the locking member, so that the wheel shaft (4) drives the wheel to rotate synchronously.

3. A drive structure for a weeding machine according to claim 1, further comprising a cutter hub (11) mounted outside the cutter shaft (3), wherein bearings (12) rotatably fitted to the cutter shaft (3) are provided at both ends of the cutter hub (11).

4. A transmission structure for a weeding machine as claimed in claim 1, wherein the upper end of the cutter shaft (3) is provided with a spline shaft (13), the middle of the bottom end of the clutch outer disc (7) is provided with a spline hole, and the spline shaft (13) is fitted with the spline hole and locked and fixed with the clutch outer disc (7) by a screw (14).

5. A transmission structure for a weeding machine as claimed in claim 1, wherein the upper end of the cutter shaft (3) is provided with a first driven wheel (15), and the first driven wheel (15) is in transmission connection with the clutch outer disc (7) through a first transmission belt (16).

6. The transmission structure for the weeding machine according to claim 5, wherein the upper end of the cutter shaft (3) is rotationally matched with the first driven wheel (15), and is sleeved with a first clutch (17), the upper end of the cutter shaft (3) is provided with a first limiting groove (18) along the length direction thereof, a first bump in sliding fit with the first limiting groove (18) is arranged on the first clutch (17), so that the first clutch (17) can only move along the axis direction thereof relative to the cutter shaft (3), a first clamping block (19) is arranged on the first clutch (17), a first clamping groove (20) capable of being in clamping fit with the first clamping block (19) is arranged at the lower end of the first driven wheel (15), and a first handle (21) is fixedly connected to the first clutch (17).

7. A drive arrangement for a weeding machine as claimed in claim 1, wherein the input shaft is provided with a second driven wheel (22), the second driven wheel (22) being in driving connection with the clutch outer disc (7) via a second drive belt (23).

8. The transmission structure for the weeding machine according to claim 1, wherein the input shaft is sleeved with a second clutch (24), the input shaft is provided with a second limiting groove (25) along the length direction thereof, the second clutch (24) is provided with a second bump in sliding fit with the second limiting groove (25), so that the second clutch (24) can only move along the axis direction thereof relative to the input shaft, the second clutch (24) is provided with a second clamping block (26), the first driven wheel (15) is provided with a second clamping groove (27) capable of being in clamping fit with the second clamping block (26), and the second clutch (24) is fixedly connected with a second handle (28).

9. A weeding machine, comprising a frame (29) and a transmission according to any one of claims 1-7.

10. A weeding machine according to claim 9, wherein the wheels comprise a front wheel (30) and two rear wheels (31), the front wheel (30) being rotatably mounted on the front end of the frame (29) by means of a support frame (32), the wheel axle (4) being rotatably mounted on the rear end of the frame (29), the two rear wheels (31) being mounted on the two ends of the wheel axle (4).