CN111010893B

CN111010893B - Intelligent mini-tiller

Info

Publication number: CN111010893B
Application number: CN201911361047.XA
Authority: CN
Inventors: 不公告发明人
Original assignee: Chongqing Keye Power Machinery Manufacture Co ltd
Current assignee: CHONGQING KEYE POWER MACHINERY MANUFACTURE Co.,Ltd.
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2021-09-14
Anticipated expiration: 2039-12-26
Also published as: CN111010893A

Abstract

The application provides an intelligent mini-tiller, which belongs to the field of agricultural tools and comprises a frame, tilling teeth, a driving device and a speed regulating device; the driving device is arranged on the frame and outputs power to the speed regulating device; the speed regulating device comprises a speed regulating part and a controller; the speed regulating part is connected with the driving rod and is used for acting the power of the driving device on the driving rod; the controller controls the input-output ratio of the speed regulating part; the tillage teeth are arranged on two sides of the driving rod; a torque sensor is arranged at the joint of the driving rod and the tillage teeth; the torque sensor is electrically connected with the controller. Can pass through the moment of torsion of torque sensor response ploughing the tooth part to automatically regulated input-output ratio is in order to adapt to the change of soil property, avoids causing too big burden to ploughing tooth and inside transmission system. The telescopic cylinder for controlling the input-output ratio is connected with the driving multi-tooth shaft through the angular contact ball bearing, so that the torque force can be eliminated, and the telescopic cylinder is prevented from being damaged.

Description

Intelligent mini-tiller

Technical Field

The application relates to the field of agricultural tools, in particular to an intelligent mini-tiller.

Background

The mini-tiller uses a small diesel engine or a gasoline engine as power and has the characteristics of light weight, small volume, simple structure and the like. The micro-tillage machine is widely applicable to dry lands, paddy fields, orchards and the like in plains, mountainous areas and hills. The tractor can pump water, generate electricity, spray pesticide, spray and other operations when matched with corresponding machines, can also pull the trailer to carry out short-distance transportation, can freely run in the field by the mini-tiller, is convenient for users to use and store, saves the trouble that large agricultural machinery can not enter mountain fields, and is the best choice for vast farmers to replace cattle farming.

The existing mini-tiller needs to control output force manually to adapt to different geological conditions in the tilling process, so that not only is the manual workload increased, but also the experience level of an operator is tested. In addition, the mini-tiller is easy to be damaged by carelessness at a moment, so that the best sowing time is missed, and the loss is caused.

In addition, in the operation process of the mini-tiller, the mini-tiller often collides with an obstacle due to insufficient braking distance when meeting emergency or in a busy or messy state, so that tillage teeth are damaged, and economic loss is caused.

Disclosure of Invention

The embodiment of the application provides an intelligent mini-tiller to improve the problems.

The invention is particularly such that:

an intelligent mini-tiller comprises a frame, tilling teeth, a driving device and a speed regulating device;

the driving device is arranged on the frame and outputs power to the speed regulating device;

the speed regulating device comprises a speed regulating part and a controller;

the speed regulating part is connected with the driving rod and is used for acting the power of the driving device on the driving rod;

the controller controls the input-output ratio of the speed regulating part;

the tillage teeth are arranged on two sides of the driving rod;

a torque sensor is arranged at the joint of the driving rod and the tillage teeth;

the torque sensor is electrically connected with the controller.

In one embodiment of the invention, the frame includes oppositely disposed front and rear ends, the drive rod being disposed between the front and rear ends;

the front end is provided with auxiliary wheels for assisting walking;

the rear end is provided with a handle.

In one embodiment of the invention, a clutch is arranged between the driving device and the speed regulating device.

In one embodiment of the present invention, the speed regulating portion includes a speed regulating component and an output component;

one end of the output assembly is matched with the speed regulating assembly, and the other end of the output assembly acts on the driving rod;

the speed regulation assembly comprises a driving multi-tooth shaft, a driven multi-tooth shaft and a speed regulation shaft body fixedly connected with the output end of the clutch;

the driving multi-tooth shaft is in lockable axial sliding connection with the speed regulation shaft body, and the driving multi-tooth shaft is in circumferential limit connection with the speed regulation shaft body;

at least two driving gears with different reference circle diameters are axially fixed outside the driving multi-tooth shaft at intervals;

driven gears which are in one-to-one correspondence with the driving gears are axially arranged outside the driven multi-tooth shaft at intervals.

In one embodiment of the invention, the driving multi-tooth shaft is splined to the governor shaft body.

In one embodiment of the invention, the output assembly includes a first shaft and a second shaft;

the first shaft is fixedly connected with the driven multi-tooth shaft, and the first shaft and the second shaft are in transmission fit through a first bevel gear set;

the second shaft and the drive rod are in transmission fit through a second bevel gear set.

In one embodiment of the invention, the controller comprises a telescopic cylinder and an angular contact ball bearing;

one end of the driving multi-tooth shaft is provided with a mounting ring groove, and an inner ring of the angular contact ball bearing is sleeved outside the mounting ring groove;

and the outer ring of the angular contact ball bearing is connected with the output end of the telescopic cylinder.

In an embodiment of the present invention, a distance between two adjacent driving gears is greater than a distance between two adjacent driven gears.

In one embodiment of the invention, the brake multi-tooth shaft is further comprised;

the outer side of the braking multi-tooth shaft is axially provided with braking gears which can be meshed with the driving gear and the driven gear at the same time at intervals;

the multi-tooth braking shaft is slidably arranged on the braking shaft, and a braking rod extending outwards in the radial direction is fixedly arranged on the multi-tooth braking shaft.

In an embodiment of the invention, a return spring is further arranged on the brake shaft.

The invention has the beneficial effects that: the intelligent mini-tiller provided by the invention can sense the torque of the tillage tooth part through the torque sensor, so that the input-output ratio is automatically adjusted to adapt to the change of soil texture, and the overlarge burden on the tillage tooth and an internal transmission system is avoided. The telescopic cylinder for controlling the input-output ratio is connected with the driving multi-tooth shaft through the angular contact ball bearing, so that the torque force can be eliminated, and the telescopic cylinder is prevented from being damaged. And the two ends of the adopted second shaft are respectively provided with a first bevel gear set and a second bevel gear set so as to increase the distance between the driving rod and the speed regulating component, so that the speed regulating component is far away from severe conditions. In addition, the brake multi-tooth shaft can brake instantly after the clutch is separated from the transmission system, and the intelligent mini-tiller only has weak inertia and moves forward for a very short distance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a first view angle of an intelligent mini-tiller according to an embodiment of the application;

fig. 2 is a schematic structural diagram of a second view angle of the intelligent mini-tiller provided in the embodiment of the application;

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is an enlarged view of a portion of area A of FIG. 3;

fig. 5 is a schematic structural view of a speed regulation shaft body of the intelligent mini-tiller provided in the embodiment of the application;

fig. 6 is a schematic structural view of a driving multi-tooth shaft of the intelligent mini-tiller provided in the embodiment of the present application;

fig. 7 is a schematic control program diagram of a controller of the intelligent mini-tiller according to the embodiment of the application.

Icon: 001-intelligent mini-tiller; 100-a frame; 200-ploughing teeth; 300-a drive device; 400-speed regulating part; 110-a handle; 130-an auxiliary wheel; 500-steel ball safety clutch; 410-active multi-tooth shaft; 430-driven multi-toothed shaft; 450-speed regulating shaft body; 411-inner spline; 451-external splines; 413-a drive gear; 431-driven gear; 470-a first axis; 490-a second shaft; 610-braking the multi-toothed shaft; 630-brake lever; 611-a brake gear; 650-return spring; 670-end; 710-angular contact ball bearing; 800-driving rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example (b):

the embodiment provides an intelligent mini-tiller 001, please refer to fig. 1, fig. 2 and fig. 3, the intelligent mini-tiller 001 comprises a frame 100, a tilling tooth 200, a driving device 300 and a speed adjusting device;

the frame 100 includes a front end and a rear end disposed opposite to each other, the driving rod 800 is disposed between the front end and the rear end, the handle 110 is disposed at the rear end,

a driving device 300 formed by a diesel engine is arranged on the frame 100 and outputs power to the speed adjusting device; the speed regulating device comprises a speed regulating part 400 and a controller; the speed regulation part 400 is connected with the driving rod 800 and is used for applying the power of the driving device 300 to the driving rod 800; the controller controls the input-output ratio of the speed regulation part 400;

the tillage teeth 200 are installed at both sides of the driving rod 800; a torque sensor is arranged at the joint of the driving rod 800 and the tillage teeth 200; the torque sensor is electrically connected with the controller.

Referring to fig. 7, the torque sensor senses the torque at the position of the teeth 200 to determine whether the teeth are exposed to soil with excessive viscosity or are exposed to obstacle, and transmits torque data to the controller, and the controller controls the input/output ratio of the speed adjusting unit 400 to adjust the rotational speed and the driving force at the position of the teeth 200 when the output of the driving device 300 is constant.

In order to guide the movement of the auxiliary tilling teeth 200 and provide stable three-point support, an auxiliary wheel 130 for auxiliary walking is provided at the front end of the frame 100, and the auxiliary wheel 130 is not connected with any output device and plays a role of a supporting point and steering guidance.

In order to facilitate the speed adjusting device to change the input-output ratio during operation, a clutch is provided between the driving device 300 and the speed adjusting device. In this embodiment, the clutch is the steel ball safety clutch 500, and the steel ball safety clutch 500 has low cost and high reliability, replaces sliding with rolling, and has high action sensitivity and automatic work recovery capability during overload. And the steel ball safety clutch 500 has a relatively small volume, and is suitable for a mini-tiller with small original volume.

Referring to fig. 4, in detail, the speed regulation part 400 includes a speed regulation component and an output component; one end of the output component is matched with the speed regulating component, and the other end of the output component acts on the driving rod 800;

the speed regulation component comprises a driving multi-tooth shaft 410, a driven multi-tooth shaft 430 and a speed regulation shaft body 450 fixedly connected with the output end of the clutch;

referring to fig. 4, 5 and 6, the driving multi-tooth shaft 410 is hollow, an inner spline 411 is disposed in an inner ring of the driving multi-tooth shaft 410, an outer spline 451 is disposed outside the speed regulation shaft body 450, the driving multi-tooth shaft 410 and the speed regulation shaft body 450 are circumferentially connected in a limited manner by the fit between the inner spline 411 and the outer spline 451, the driving multi-tooth shaft 410 can axially slide on the speed regulation shaft body 450, and the axial position of the driving multi-tooth shaft 410 on the speed regulation shaft body 450 is controlled by the controller.

Referring to fig. 4, the driving multi-toothed shaft 410 of the present embodiment is axially fixed with two driving gears 413 with different pitch circle diameters at intervals; two driven gears 431 are provided at intervals in the axial direction on the driven multi-tooth shaft 430, corresponding to the driving gears 413 one by one.

The interval between two adjacent driving gears 413 is larger than the interval between two adjacent driven gears 431. Therefore, when one driving gear 413 is meshed with the driven gear 431, the other driving gear 413 is not meshed with the corresponding driven gear 431, and the locking condition during multi-gear meshing can be avoided.

When the driving gears 413 with different reference circle diameters are matched with the corresponding driven gears 431, different input-output ratios can be realized. Specifically, because the driving gear 413 has two different pitch circle diameters, the governor assembly has two different input-output ratios, and in other embodiments, the number of pairs of gears can be increased according to actual situations.

In the present embodiment, the output assembly includes a first shaft 470 and a second shaft 490; the first shaft 470 is fixedly connected with the driven multi-tooth shaft 430, and the first shaft 470 and the second shaft 490 are in transmission fit through a first bevel gear set; the second shaft 490 and the drive rod 800 are drivingly engaged through a second bevel gear set.

Make the actuating lever 800 increase the distance between actuating lever 800 and the speed governing subassembly through second axle 490, and the tooth 200 of ploughing of actuating lever 800 drive need act on ground, and the abominable condition can be kept away from to the speed governing subassembly after increasing the distance, also makes things convenient for operating personnel in time to operate more.

In the present embodiment, the controller includes a telescopic cylinder (not shown in the drawings) and angular contact ball bearings 710;

one end of the driving multi-tooth shaft 410 is provided with a mounting ring groove, and the inner ring of the angular contact ball bearing 710 is sleeved outside the mounting ring groove; the outer ring of the angular contact ball bearing 710 is connected with the output end of the telescopic cylinder.

The axial position of the active multi-tooth shaft 410 on the governor shaft body 450 is controlled by a telescoping cylinder, and since the output end of the telescoping cylinder cannot rotate with the active multi-tooth shaft 410, an angular contact ball bearing 710 is provided to eliminate circumferential torque between the output end of the telescoping cylinder and the active multi-tooth shaft 410.

The intelligent mini-tiller 001 provided by the embodiment realizes braking through the braking multi-tooth shaft 610;

a brake gear 611 which can be meshed with the driving gear 413 and the driven gear 431 simultaneously is arranged at intervals in the axial direction outside the brake multi-tooth shaft 610;

the brake multi-tooth shaft 610 is slidably disposed on the brake shaft, and a brake lever 630 extending radially outward is further fixedly disposed on the brake multi-tooth shaft 610.

The brake multi-toothed shaft 610 slides by pulling the brake lever 630 until the brake gear 611 abuts against the driving gear 413 and the driven gear 431 which are in the engaged state, and the brake gear 611 is simultaneously engaged with the driving gear 413 and the driven gear 431, i.e. the whole device can be instantaneously braked without generating friction slip due to the action of the odd-numbered gear meshing ring.

The braking structure can be mounted on the basis of the gradient speed change structure of the intelligent mini-tiller 001, and the braking effect is excellent.

In order to facilitate the return of the brake multi-toothed shaft 610 after braking, a return spring 650 is further provided on the brake shaft. Specifically, an end 670 is arranged at the end of the brake rod, the end 670 forms an annular extension surface, one end of the return spring 650 acts on the brake multi-tooth shaft 610 acted on by the other end of the annular extension surface, and the brake multi-tooth shaft 610 can automatically return to the original position after the brake rod 630 is not stressed. Since the brake multi-tooth shaft 610 does not rotate during braking, it is not necessary to install an additional bearing on a side of the brake multi-tooth shaft 610 adjacent to the return spring 650 to remove torque force.

The intelligent mini-tiller 001 provided by the invention can sense the torque of the tillage teeth 200 part through the torque sensor, so that the input-output ratio is automatically adjusted to adapt to the change of soil texture, and the overlarge burden on the tillage teeth 200 and an internal transmission system is avoided. The telescopic cylinder for controlling the input-output ratio is connected with the driving multi-tooth shaft 410 through the angular contact ball bearing 710, so that the torque force can be eliminated, and the telescopic cylinder is prevented from being damaged. The first bevel gear set and the second bevel gear set are respectively arranged at two ends of the second shaft 490 so as to increase the distance between the driving rod 800 and the speed regulating assembly, so that the speed regulating assembly is far away from severe conditions. In addition, the braking multi-tooth shaft 610 can brake instantly after the clutch is separated from a transmission system, and the intelligent mini-tiller 001 only has weak inertia and moves forward for a small distance.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An intelligent mini-tiller is characterized by comprising a frame, tilling teeth, a driving device, a braking multi-tooth shaft and a speed regulating device; the driving device is arranged on the frame and outputs power to the speed regulating device; the speed regulating device comprises a speed regulating part and a controller; the speed regulating part is connected with the driving rod and is used for acting the power of the driving device on the driving rod; the controller controls the input-output ratio of the speed regulating part; the tillage teeth are arranged on two sides of the driving rod; a torque sensor is arranged at the joint of the driving rod and the tillage teeth; the torque sensor is electrically connected with the controller; a clutch is arranged between the driving device and the speed regulating device; the speed regulating part comprises a speed regulating component and an output component; one end of the output assembly is matched with the speed regulating assembly, and the other end of the output assembly acts on the driving rod;

the speed regulation assembly comprises a driving multi-tooth shaft, a driven multi-tooth shaft and a speed regulation shaft body fixedly connected with the output end of the clutch; the driving multi-tooth shaft is in lockable axial sliding connection with the speed regulation shaft body, and the driving multi-tooth shaft is in circumferential limit connection with the speed regulation shaft body; at least two driving gears with different reference circle diameters are axially fixed outside the driving multi-tooth shaft at intervals; driven gears which are in one-to-one correspondence with the driving gears are axially arranged outside the driven multi-tooth shaft at intervals; the outer side of the braking multi-tooth shaft is axially provided with braking gears which can be meshed with the driving gear and the driven gear at the same time at intervals; the brake multi-tooth shaft is slidably arranged on the brake shaft, and a brake rod extending outwards in the radial direction is fixedly arranged on the brake multi-tooth shaft; the frame comprises a front end and a rear end which are oppositely arranged, and the driving rod is arranged between the front end and the rear end;

the front end is provided with auxiliary wheels for assisting walking; the rear end is provided with a handle;

the output assembly includes a first shaft and a second shaft; the first shaft is fixedly connected with the driven multi-tooth shaft, and the first shaft and the second shaft are in transmission fit through a first bevel gear set; the second shaft and the driving rod are in transmission fit through a second bevel gear set; the controller comprises a telescopic cylinder and an angular contact ball bearing; one end of the driving multi-tooth shaft is provided with a mounting ring groove, and an inner ring of the angular contact ball bearing is sleeved outside the mounting ring groove; and the outer ring of the angular contact ball bearing is connected with the output end of the telescopic cylinder.

2. The intelligent mini-tiller of claim 1, wherein the driving multi-tooth shaft is splined to the speed regulation shaft.

3. The intelligent mini-tiller of claim 1, wherein the distance between two adjacent driving gears is larger than the distance between two adjacent driven gears.

4. The intelligent mini-tiller of claim 1, wherein a return spring is further arranged on the brake shaft.