CN214028063U - Running gear and small farming machine - Google Patents

Abstract

The utility model provides a walking device, which comprises a front wheel driving shaft, a wheel driving bracket and a rear wheel driving shaft, wherein the front wheel driving shaft is rotationally connected with a front wheel, and the rear wheel driving shaft is rotationally connected with a rear wheel; one end of the wheel driving support is rotatably connected to a front wheel driving shaft, one end of the wheel driving support, which is far away from the front wheel driving shaft, is rotatably connected to a rear wheel driving shaft, and the wheel driving support can rotate around the front wheel driving shaft and the rear wheel driving shaft. The utility model discloses a running gear, preceding wheel drive axle and back wheel drive axle rely on the wheel drive rotate bracket to connect, and the wheel drive support can rotate around preceding wheel drive axle and back wheel drive axle, and when meetting the uneven condition in road surface, the wheel drive support can be along with the state rotation on road surface, and the wheel lands simultaneously around keeping, and the stability of little agricultural machinery is high.

Description

Running gear and small farming machine

Technical Field

The utility model relates to an agricultural machinery technical field particularly, relates to a running gear and little agricultural machinery.

Background

The small agricultural machine is widely applied to agricultural working environments such as plowing, ditching, weeding and the like due to small volume, flexible operation and the like. However, both during normal walking and during actual operation, the ground environment is inevitably subjected to depressions. When a traditional small agricultural machine encounters the condition that a road surface is uneven, the situation that front wheels sink into potholes, rear wheels are suspended and the like, and wheels cannot land simultaneously often occurs, so that the stability of the small agricultural machine in the environment with the uneven road surface is poor, and particularly, the overturning situation can occur even under the condition that the road surface state is poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a running gear and little agricultural machinery.

On one hand, the utility model provides a walking device, which comprises a front wheel driving shaft, a wheel driving bracket and a rear wheel driving shaft, wherein the front wheel driving shaft is rotationally connected with a front wheel, and the rear wheel driving shaft is rotationally connected with a rear wheel; one end of the wheel driving support is rotatably connected to a front wheel driving shaft, one end of the wheel driving support, which is far away from the front wheel driving shaft, is rotatably connected to a rear wheel driving shaft, and the wheel driving support can rotate around the front wheel driving shaft and the rear wheel driving shaft.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a running gear, preceding wheel drive axle relies on the wheel drive rotate bracket to connect with the back wheel drive axle, the wheel drive support can rotate around preceding wheel drive axle and back wheel drive axle, when meetting the condition that the road surface is uneven, the wheel drive support can rotate along with the state on road surface under the action of gravity, the wheel lands simultaneously around keeping, it is unsettled to prevent a wheel, therefore the stability of little agricultural machinery is high, and another wheel can provide power when one of them wheel appears skidding, it is unprecedented to prevent that little agricultural machinery from stopping.

In some embodiments of the present invention, the wheel drive carrier comprises a first carrier, a second carrier, and a third carrier; the first bracket is sleeved outside the front wheel driving shaft, the first bracket can rotate around the front wheel driving shaft, and a driving wheel is arranged on the front wheel driving shaft; the second support is sleeved outside the rear wheel driving shaft and can rotate around the rear wheel driving shaft, and a driven wheel is arranged on the rear wheel driving shaft; the third bracket connects the first bracket and the second bracket; the driving wheel and the driven wheel are driven by chains or belts passing through the first support, the third support and the second support.

The wheel driving support has the advantages that the first support and the second support are used as parts of the wheel driving support which are rotationally connected to the front wheel driving shaft and the rear wheel driving shaft, so that the wheel driving support can rotate around the front wheel driving shaft and the rear wheel driving shaft, and the effect of protecting the front wheel driving shaft and the rear wheel driving shaft can be achieved; the front wheel driving shaft outputs power to the rear wheel driving shaft through the driving wheel and the driven wheel, so that the rear wheel driving shaft also has power, the rear wheel driving shaft can drive the rear wheel, and compared with the mode that the front wheel drags the rear wheel to walk, the power-saving bicycle is labor-saving and more convenient to walk.

In some embodiments of the present invention, the front wheel is connected to both ends of the front wheel drive shaft, and the rear wheel drive shaft comprises a left rear wheel drive shaft and a right rear wheel drive shaft; the third bracket comprises a left third bracket and a right third bracket; the left rear wheel driving shaft is in transmission connection with the front wheel driving shaft through a driving wheel arranged on the left side of the front wheel driving shaft, a chain or a belt penetrating through the first bracket, the left third bracket and the second bracket and a driven wheel arranged on the left rear wheel driving shaft; the right rear wheel driving shaft is in transmission connection with the front wheel driving shaft through a driving wheel arranged on the right side of the front wheel driving shaft, a chain or a belt penetrating through the first support, the right third support and the second support, and a driven wheel arranged on the right rear wheel driving shaft.

The technical scheme has the advantages that the first support, the left third support, the right third support and the second support enclose an approximate U-shaped non-closed space, and the space can be provided with structures such as a mechanical head for operation, so that the small agricultural machine is smaller in size and can be applied to an operation environment with large limitation on the size of operation equipment.

The utility model discloses an in some embodiments, preceding wheel drive axle all be provided with transmission in the rear wheel drive axle, transmission and wheel connection, transmission can block power transmission to wheel, or can be with power transmission to wheel in order to drive the wheel and just pass or the reversal.

The technical scheme has the advantages that the transmission device connected with the wheels can block power or transmit power to the wheels, so that the transmission device can control neutral gear and forward rotation or reverse rotation of the wheels, when the wheels on one side rotate forward or reverse and the wheels on the other side rotate in neutral gear or the wheels on two sides rotate in opposite directions, positioning is realized when the wheels are in neutral gear, an engine does not need to be stopped or reduced in speed when the engine is in neutral gear or in steering, the neutral gear or the steering of the wheels can be realized when the rotating speed of an output shaft of the engine is kept at a normal working level, the rotating speed of an operating shaft of an operating mechanism cannot be reduced when the engine is in neutral gear or in steering, the operating efficiency during the steering is ensured, and fixed-point operation during the neutral gear of the wheels is realized.

In some embodiments of the invention, the transmission may block power transmission to the wheel, or may transmit power to the wheel to drive the wheel to reverse; the transmission device comprises a first positioning piece and a first planetary gear set arranged between the first positioning piece and a wheel; the first positioning piece is provided with a first braking piece for braking the first positioning piece; the first planetary gear set comprises a first sun gear connected with a wheel driving shaft, a first planetary gear set meshed with the first sun gear and a first outer gear ring meshed with the first planetary gear set; the first planetary wheel set is connected to the first positioning piece through a first mounting rod; the first outer gear ring is connected with a wheel.

The beneficial effect of adopting above-mentioned further technical scheme lies in, when braking first locating piece, the unable revolution of first planet wheel group on being connected to first locating piece, and the wheel drive axle rotates, drives first outer ring gear and rotates to drive the wheel antiport, when not braking first locating piece, first planet wheel group can revolve, under the drive of wheel drive axle, drives first sun gear, first planetary gear rotates, does not have power transmission to the wheel, and the wheel does not have the action.

When the first braking piece controls the first positioning piece to enable the wheel on one side to rotate reversely and the wheel on one side does not act, the agricultural machine is turned to the side of the reverse wheel; when the first positioning piece is controlled by the first braking piece to enable the wheels to have no action, neutral gear positioning of the wheels is realized; when the wheels on the two sides are reversed, the agricultural machine retreats; the engine does not need to be stopped and does not need to be decelerated when the vehicle turns to or is in a neutral gear.

In some embodiments of the present invention, the transmission may block power transmission to the wheel, or may transmit power to the wheel to drive the wheel to rotate forward; the transmission device comprises a second positioning piece and a second planetary gear set arranged between the second positioning piece and the wheel; the second positioning piece is provided with a second braking piece for braking the second positioning piece; the second planetary gear set comprises a second sun gear connected with a wheel driving shaft, a second planetary gear set meshed with the second sun gear and a second outer gear ring meshed with the second planetary gear set; the second planetary gear set is connected to the wheel through a second mounting rod; the second external gear ring is connected with the second positioning piece.

Adopt above-mentioned further technical scheme's beneficial effect to lie in, when braking second setting element, the unable free rotation of second outer ring gear, the wheel drive axle rotates, drives second planetary gear set and rotates to drive the wheel forward and rotate, when not braking the second setting element, but the free rotation of second outer ring gear under the drive of wheel drive axle, drive second sun gear, second planetary gear rotate, no power transmission to wheel, the wheel does not have the action.

When the second positioning piece is controlled by the second braking piece to enable the wheel on one side to rotate forwards and the wheel on one side does not act, the agricultural machinery is turned to the side of the wheel without the action; when the second positioning piece is controlled by the second braking piece to enable the wheels to have no action, neutral gear positioning of the wheels is realized; when the wheels on the two sides rotate forwards, the agricultural machine moves forwards; the engine does not need to be stopped and does not need to be decelerated when the vehicle turns to or is in a neutral gear.

In some embodiments of the present invention, the first positioning member and the second positioning member are a brake drum, and the first bracket and the second bracket are located on a side of the brake drum away from the wheel and connected to a side of the brake drum away from the wheel.

Adopt above-mentioned further technical scheme's beneficial effect to lie in, first support and second support are located the brake drum and keep away from the one side of wheel, and are connected to the one side that the wheel was kept away from to the brake drum, and when meetting uneven pavement, first support and second support all can drive the rotation of brake drum and first support and second support coupling part, and the one end that the brake drum was kept away from to first support and second support is not fixed, can not block the rotation of first support and second support around the wheel drive shaft, and then the wheel lands simultaneously around realizing.

In some embodiments of the present invention, the transmission comprises a first transmission mechanism located on one side of the wheel and a second transmission mechanism located on the other side of the wheel, the first transmission mechanism can drive the wheel to rotate forward, and the second transmission mechanism can drive the wheel to rotate backward; the first transmission mechanism and the second transmission mechanism can block power to drive wheels or alternatively transmit power to the wheels.

The beneficial effect of adopting above-mentioned further technical scheme lies in that first drive mechanism, second drive mechanism can block power drive wheel or alternative transmit power to the wheel, can realize the switching of wheel just reversing under the prerequisite that does not change engine output, can realize turning to when the wheel rotation direction of engine both sides is opposite to the engine need not to shut down during turning to, also need not the deceleration.

The utility model discloses an in some embodiments, running gear still includes driving system, driving system's output is connected with the transmission shaft, the transmission shaft is kept away from driving system's one end is connected with mechanical head, mechanical head with be provided with output gear on the transmission shaft between the driving system, output gear passes through driving medium and preceding wheel drive shaft connection.

The further technical scheme has the beneficial effects that the power is simultaneously output to the mechanical head and the wheels through the same engine (power system), so that the mechanical head and the wheels are simultaneously driven by one engine. In addition, the engine, the transmission shaft and the mechanical head are positioned on the same straight line, so that the whole agricultural machine is more stable.

On the other hand, the utility model also provides a small agricultural machine, small agricultural machine includes above-mentioned arbitrary running gear.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a running gear of little agricultural machinery, preceding wheel drive axle and back wheel drive axle rely on the rotation of wheel drive support to connect, and the wheel drive support can rotate around preceding wheel drive axle and back wheel drive axle, and when meetting the condition that the road surface is uneven, the wheel drive support can rotate along with the state on road surface under the action of gravity, and the wheel lands simultaneously around keeping, and the stability of little agricultural machinery is high.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be described below.

Fig. 1 is a schematic structural view of a walking device according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a transmission of the walking device of FIG. 1 according to the present invention;

FIG. 3 is a schematic diagram of the power train transmission of the walking device of FIG. 1 according to the present invention;

fig. 4 is a schematic structural view of a walking device according to another embodiment of the present invention;

FIG. 5 is a schematic diagram of a transmission of the walking device of FIG. 4 according to the present invention;

fig. 6 is a schematic structural view of a walking device according to another embodiment of the present invention;

fig. 7 is a schematic structural view of a transmission device of the walking device of fig. 6 according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following detailed description of various aspects of the present invention will be given with reference to specific embodiments, which are only used for illustrating the present invention and do not set any limit to the scope of protection and the substance of the present invention.

It should be understood by those skilled in the art that the terms "front and rear" and "left and right" in the terms "front wheel drive shaft", "rear wheel drive shaft", "front wheel", "rear wheel", "left rear wheel drive shaft", "right rear wheel drive shaft", "left third support" and "right third support" in the present invention are relative terms, and indicate relative positional relationships.

Example 1:

the embodiment provides a walking device and a small agricultural machine. Fig. 1 is a schematic structural diagram of a walking device of the present embodiment (wherein, a specific structure of a first positioning element of a transmission device is not shown), fig. 2 is a schematic structural diagram of a transmission device of the walking device of fig. 1, and fig. 3 is a schematic structural diagram of a power system transmission part of the walking device of fig. 1.

As shown in fig. 1-2, a traveling apparatus 1 of the present embodiment includes a front wheel drive shaft 11, a wheel drive bracket 13, and a rear wheel drive shaft 12 (including 12a and 12b), a front wheel 111 being rotatably connected to the front wheel drive shaft 11, and a rear wheel 121 being rotatably connected to the rear wheel drive shaft 12. Wherein one end of the wheel driving bracket 13 is rotatably connected to the front wheel driving shaft 11, one end of the wheel driving bracket 13 far away from the front wheel driving shaft 11 is rotatably connected to the rear wheel driving shaft 12, and the wheel driving bracket 13 can rotate around the front wheel driving shaft 11 and the rear wheel driving shaft 12.

As shown in fig. 1, the wheel drive bracket 13 of the present embodiment includes a first bracket 131, a second bracket 132, and a third bracket 133 (including 133a, 133 b). The first bracket 131 is sleeved outside the front wheel driving shaft 11, the first bracket 131 can rotate around the front wheel driving shaft 11, and the driving wheel 112 is arranged on the front wheel driving shaft 11. The second bracket 132 is sleeved outside the rear wheel driving shaft 12, the second bracket 132 can rotate around the rear wheel driving shaft 12, and the driven wheel 122 is disposed on the rear wheel driving shaft 12. The third bracket 133 connects the first bracket 131 and the second bracket 132. The driving pulley 112 and the driven pulley 122 are driven by a chain or a belt passing through the first bracket 131, the third bracket 133 and the second bracket 132.

Specifically, as shown in fig. 1, the front wheels 111 are connected to both ends of the front wheel drive shaft 11, the rear wheel drive shaft 12 includes a left rear wheel drive shaft 12a and a right rear wheel drive shaft 12b, and the third bracket 133 includes a left third bracket 133a and a right third bracket 133 b. The left rear wheel drive shaft 12a is drivingly connected to the front wheel drive shaft 11 via a drive pulley 112 provided on the left side of the front wheel drive shaft 11, a chain or belt passing through the first bracket 131, the left third bracket 133a, and the second bracket 132, and a driven pulley 122 provided on the left rear wheel drive shaft 12 a. The right rear wheel driving shaft 12b is in transmission connection with the front wheel driving shaft 11 through a driving wheel 112 disposed on the right side of the front wheel driving shaft 11, a chain or belt passing through the first bracket 131, the right third bracket 133b and the second bracket 132, and a driven wheel 122 disposed on the right rear wheel driving shaft 12 b.

As shown in fig. 1 and fig. 3, the walking device 1 of the present embodiment further includes a power system 14, and the power system 14 includes, but is not limited to, a fuel engine and an electric motor drive assembly. The output end of the power system 14 faces the end of the left third bracket 133a and the right third bracket 133b away from the first bracket 131 (the direction of the output end of the power system 14 is not limited to this), the output end is connected with the transmission shaft 15, the end of the transmission shaft 15 away from the power system 14 is connected with the mechanical head 16, and the mechanical head 16 may be completely located in the non-enclosed space enclosed by the first bracket 131, the left third bracket 133a, the right third bracket 133b, and the second bracket 132, or may partially extend out of the non-enclosed space. An output gear 151 is arranged on the transmission shaft 15 between the mechanical head 16 and the power system 14, and the output gear 151 is connected with the front wheel driving shaft 11 through a transmission piece. The portion of the propeller shaft 15 between the output gear 151 and the powertrain 14 is provided with a clutch 152. The transmission comprises an input gear 153 in mesh with the output gear 151, the input gear 153 being connected to a first bevel gear 154, the first bevel gear 154 driving the front wheel drive shaft 11 via a gear transmission. The gear transmission mechanism comprises a second transmission shaft 155, two ends of the second transmission shaft 155 are connected with second bevel gears 156, the second bevel gear 156 at one end is meshed with the first bevel gear 154, the second bevel gear 156 at the other end is meshed with a third bevel gear 157, and the third bevel gear 157 is connected with the front wheel driving shaft 11.

As shown in fig. 1, the transmission 17 is provided on each of the front wheel drive shaft 11 and the rear wheel drive shaft 12, and the transmission 17 is connected to the wheels (111, 121). As shown in fig. 2, the transmission 17 of the present embodiment may block the power transmission to the wheels, or may transmit the power to the wheels to drive the wheels to rotate in reverse. The transmission 17 includes a first positioning member 171, and a first planetary gear set 172 disposed between the first positioning member 171 and the wheel. The first positioning member 171 is provided with a first braking member for braking the first positioning member 171, and the first planetary gear set 172 includes a first sun gear 1721 connected to a wheel driving shaft, a first planetary gear set 1722 engaged with the first sun gear 1721, and a first outer ring gear 1723 engaged with the first planetary gear set 1722. The first set of planet gears 1722 is connected to the first positioning member 171 via the first mounting rod 173 and the first outer ring gear 1723 is connected to the wheels.

The transmission 17 of the embodiment can realize neutral gear or reverse rotation of the wheels and realize steering, and comprises the following specific steps:

when the first positioning member 171 is braked, the first planetary gear set 1722 connected to the first positioning member 171 cannot revolve, and the wheel driving shaft rotates to drive the first outer ring gear 1723 to rotate, so that the wheels are driven to rotate reversely;

when the first positioning member 171 is not braked, the first planetary wheel set 1722 can revolve, and the first sun wheel 1721 and the first planetary wheel set 1722 are driven by the wheel driving shaft to rotate, no power is transmitted to the wheels, the wheels do not act, and the wheels are in a neutral gear;

when the first positioning piece 171 is controlled by the first braking piece to enable the wheel on one side to rotate reversely and the wheel on one side does not act, the agricultural machinery is turned to the side of the reverse wheel; when the first positioning piece 171 is controlled by the first braking piece to make the wheels have no action, neutral gear positioning of the wheels is realized; when the wheels on the two sides are reversed, the agricultural machine retreats; the engine does not need to be stopped and does not need to be decelerated when the vehicle turns to or is in a neutral gear.

In the present embodiment, as shown in fig. 1 and 2, the first positioning element 171 is a brake drum, and the first bracket 131 and the second bracket 132 are located on the side of the brake drum away from the wheel and are connected to the side of the brake drum away from the wheel. The brake drum comprises a supporting plate 1711, a first braking piece is arranged on the supporting plate 1711, a wheel drum 1712 is sleeved outside the first braking piece, the supporting plate 1711 and the wheel drum 1712 are rotatably connected with the wheel driving shaft, and one end, far away from the first braking piece, of the wheel drum 1712 is connected with the first mounting rod 173. When the road surface is uneven, the first support 131 and the second support 132 can drive the parts (the support plates 1711) of the brake drum connected with the first support 131 and the second support 132 to rotate, and the ends, far away from the brake drum, of the first support 131 and the second support 132 are not fixed, so that the rotation of the first support 131 and the second support 132 around the wheel driving shaft cannot be blocked, and the front wheel and the rear wheel can be landed simultaneously. In this embodiment, bearings may be disposed between the first and second brackets 131 and 132 and the wheel driving shaft to facilitate the rotation of the first and second brackets 131 and 132 around the wheel driving shaft. In addition, in order to ensure that the brake drum can provide enough resistance to enable the power brought by the wheel driving shaft to be transmitted to the first planetary wheel set 1722 from the first sun wheel 1721 and then only to be transmitted to the wheel driving wheel to rotate when the brake drum brakes, the traveling device of the embodiment further comprises a damping spring which is connected with the left third bracket 133a and the small agricultural machine body and is connected with the right third bracket 133b and the small agricultural machine body (the damping spring ensures that the wheel driving bracket rotates along with the state of the road surface under the action of the elastic force on one hand, so that the wheels land at the same time, and on the other hand, enough resistance can be provided by the gravity of the small agricultural machine body when the brake drum brakes, so that the power is prevented from being transmitted to the brake drum from the first planetary wheel set 1722, and then the power is only transmitted to the wheel driving wheel to rotate).

The embodiment also provides a small agricultural machine comprising the walking device. Small agricultural machines include, but are not limited to, rotary cultivators, lawn mowers, seeders, trenchers, snow throwers, and the like.

Example 2:

the embodiment provides a walking device and a small agricultural machine. The present embodiment only differs from embodiment 1 in the transmission device, and the rest is the same, so the description of the same parts is omitted here, and only the difference (transmission device) is described:

fig. 4 is a schematic structural diagram of a walking device of the present embodiment (wherein, the specific structure of the transmission device is not fully shown), and fig. 5 is a schematic structural diagram of the transmission device of the walking device of fig. 4. As shown in fig. 4 to 5, the transmission device 27 of the traveling device 2 of the present embodiment may block the transmission of power to the wheels, or may transmit power to the wheels to drive the wheels to rotate in the forward direction. The transmission 27 includes a second positioning member 271, and a second planetary gear set 272 disposed between the second positioning member 271 and the wheels. Wherein, a second braking member for braking the second positioning member 271 is arranged on the second positioning member 271, and the second planetary gear set 272 includes a second sun gear 2721 connected to the wheel driving shaft, a second planetary gear set 2722 engaged with the second sun gear 2721, and a second external ring gear 2723 engaged with the second planetary gear set 2722. The second planetary gear set 2722 is connected to the wheels through the second mounting lever 273, and the second external ring gear 2723 is connected to the second positioning member 271.

The transmission device 27 of the embodiment can realize neutral gear or forward rotation of the wheels to realize steering, and specifically comprises the following steps:

when the second positioning piece 271 is braked, the second external gear ring 2723 cannot rotate freely, and the wheel driving shaft rotates to drive the second planetary gear set 2722 to rotate, so that the wheels are driven to rotate in the forward direction;

when the second positioning piece 271 is not braked, the second external gear ring 2723 can rotate freely, and under the drive of the wheel driving shaft, the second sun gear 2721 and the second planetary gear set 2722 are driven to rotate, no power is transmitted to the wheels, the wheels do not act, and the wheels are in neutral;

when the second positioning piece 271 is controlled by the second braking piece to enable the wheel on one side to rotate forwards and the wheel on one side does not act, the agricultural machinery is turned to the side of the wheel without the action; when the second positioning piece 271 is controlled by the second braking piece to make the wheels have no action, neutral gear positioning of the wheels is realized; when the wheels on the two sides rotate forwards, the agricultural machine moves forwards; the engine does not need to be stopped and does not need to be decelerated when the vehicle turns to or is in a neutral gear.

In the present embodiment, as shown in fig. 4-5, the second positioning element 271 is a brake drum, and the first bracket and the second bracket are located on a side of the brake drum away from the wheel and are connected to a side of the brake drum away from the wheel. The brake drum includes backup pad 2711, sets up the second braking piece on backup pad 2711, and the second braking piece overcoat is established the wheel drum 2712, and backup pad 2711, wheel drum 2712 rotate with the wheel drive axle and are connected, and the one end that the second braking piece was kept away from to wheel drum 2712 is connected with second external ring gear 2723. When the road surface is uneven, the first support and the second support can drive the brake drum to rotate with the part (the support plate 2711) connected with the first support and the second support, and the ends, far away from the brake drum, of the first support and the second support are not fixed, so that the first support and the second support cannot be blocked from rotating around a wheel driving shaft, and the front wheel and the rear wheel can be landed simultaneously. In this embodiment, bearings may be disposed between the first and second brackets and the wheel drive shaft to facilitate rotation of the first and second brackets about the wheel drive shaft. In addition, in order to ensure that the brake drum can provide enough resistance to enable the power brought by the wheel driving shaft to be transmitted from the second sun gear 2721 to the second planetary gear set 2722 and then only to be transmitted to the wheel to drive the wheel to rotate when the brake drum brakes, the traveling device of this embodiment further includes a damping spring connecting the left third support and the mini-farm machine body and connecting the right third support and the mini-farm machine body (the damping spring ensures that the wheel driving support rotates along with the state of the road surface under the action of gravity under the action of elastic force to enable the wheel to land simultaneously, and on the other hand, the damping spring can provide enough resistance by the gravity of the mini-farm machine body when the brake drum brakes, so that the power is prevented from being transmitted from the second planetary gear set 2722 to the brake drum, and the power is only transmitted to the wheel to drive the wheel to rotate).

Example 3:

the embodiment provides a walking device and a small agricultural machine. In this embodiment, there is only a difference between the positions of the actuator and the mechanical head and the embodiment 1, and the rest is the same, so that the description of the same parts is omitted here, and only the difference (the positions of the actuator and the mechanical head) is described:

fig. 6 is a schematic structural diagram of a walking device of the present embodiment (the structure of the transmission device is not fully shown), and fig. 7 is a schematic structural diagram of the transmission device of the walking device of fig. 6. As shown in fig. 6 to 7, the mechanical head 36 of the walking device 3 of this embodiment partially extends out of the non-enclosed space surrounded by the first support, the left third support, the right third support and the second support, and optionally, the mechanical head may also be completely located in the non-enclosed space.

As shown in fig. 6 to 7, the transmission device 37 of the traveling device 3 of the present embodiment may block the transmission of power to the wheels, or may transmit power to the wheels to drive the wheels to rotate in the forward or reverse direction. The transmission device 37 of the traveling device 3 of the present embodiment includes a first transmission mechanism 37a on one side of the wheel and a second transmission mechanism 37b on the other side of the wheel, the first transmission mechanism 37a can drive the wheel to forward, and the second transmission mechanism 37b can drive the wheel to reverse; the first transmission mechanism 37a and the second transmission mechanism 37b can block power to drive wheels or alternatively transmit power to the wheels.

The structure of the first transmission mechanism 37a of the transmission device 37 of this embodiment is the same as that of the transmission device 27 of embodiment 2, and the structure of the second transmission mechanism 37b of the transmission device 37 is the same as that of the transmission device 17 of embodiment 1, and thus the description thereof is omitted.

Further, as shown in fig. 7, in comparison with embodiment 1-2, the transmission device 37 of the present embodiment further includes a link 37c connecting the first transmission mechanism 37a and the second transmission mechanism 37b, and the first transmission mechanism 37a, the second transmission mechanism 37b, and the link 37c are rotatable about the wheel drive shaft. In the present embodiment, the connecting member 37c is a U-shaped frame connecting the first transmission mechanism 37a and the second transmission mechanism 37 b. The connecting piece 37c is connected with the first transmission mechanism 37a and the second transmission mechanism 37b, the second positioning piece (brake drum) of the first transmission mechanism 37a and the second positioning piece (brake drum) of the second transmission mechanism 37b are respectively connected with the first support and the second support, the first support and the second support are connected through a left third support and a right third support, the left third support is connected with the small agricultural machine body through a damping spring, and the right third support is connected with the small agricultural machine body through a damping spring. The first transmission mechanism 37a and the second transmission mechanism 37b are connected through a connecting piece 37c, the first support, the second support, the left support, the right support, the third support and the small agricultural machine body are connected, and the damping spring ensures that the wheel driving support can rotate along with the state of the road surface under the action of gravity under the action of elasticity, so that the wheels can land simultaneously; on the other hand, when the brake drum is braked, enough resistance can be provided by means of the gravity of the small agricultural machine body, and the power is prevented from being transmitted to the brake drum by the self-propelling star wheel set, so that the power is only transmitted to the wheel to drive the wheel to rotate.

The transmission device 37 of the embodiment can realize neutral gear or forward and reverse rotation switching of the wheels, and realize steering, and specifically comprises the following steps:

when the first positioning piece is not braked by the first braking piece and the second positioning piece is not braked by the second braking piece, the wheels do not act, and neutral gear of the wheels is realized;

when the first braking part of the left wheel brakes the first positioning part and the second braking part brakes the second positioning part, and the first braking part of the right wheel brakes the first positioning part and the second braking part brakes the second positioning part, the left wheel rotates in the positive direction and the right wheel rotates in the reverse direction, and at the moment, the rotation directions of the left wheel and the right wheel are opposite, so that the steering to the right wheel is realized;

when the first braking part of the left wheel brakes the first positioning piece and the second braking part does not brake the second positioning piece, and the first braking part of the right wheel does not brake the first positioning piece and the second braking part brakes the second positioning piece, the left wheel rotates reversely and the right wheel rotates positively, and at the moment, the rotation directions of the left wheel and the right wheel are opposite, so that the left wheel and the right wheel are steered;

when the first braking parts of all the wheels do not brake the first positioning part and the second braking parts brake the second positioning part, all the wheels rotate in the positive direction, and the agricultural machine moves forwards;

when the first positioning piece is braked by the first braking piece and the second positioning piece is not braked by the second braking piece of all the wheels, all the wheels rotate in the reverse direction, and the agricultural machine moves backwards;

the engine does not need to be stopped and does not need to be decelerated when the vehicle is turned to or in a neutral gear.

The present invention has been described in connection with the embodiments, which are merely exemplary and are not intended to limit the scope of the present invention, and those skilled in the art may make various modifications, changes, or substitutions without departing from the spirit of the present invention. Therefore, all equivalent changes made according to the present invention still fall within the scope covered by the present invention.

Claims (11)

1. The walking device is characterized by comprising a front wheel driving shaft, a wheel driving support and a rear wheel driving shaft, wherein the front wheel driving shaft is rotatably connected with a front wheel, and the rear wheel driving shaft is rotatably connected with a rear wheel;

one end of the wheel driving support is rotatably connected to a front wheel driving shaft, one end of the wheel driving support, which is far away from the front wheel driving shaft, is rotatably connected to a rear wheel driving shaft, and the wheel driving support can rotate around the front wheel driving shaft and the rear wheel driving shaft.

2. The walking apparatus of claim 1, wherein the wheel drive bracket comprises a first bracket, a second bracket, and a third bracket;

the first bracket is sleeved outside the front wheel driving shaft, the first bracket can rotate around the front wheel driving shaft, and a driving wheel is arranged on the front wheel driving shaft;

the second support is sleeved outside the rear wheel driving shaft and can rotate around the rear wheel driving shaft, and a driven wheel is arranged on the rear wheel driving shaft;

the third bracket connects the first bracket and the second bracket;

the driving wheel and the driven wheel are driven by chains or belts passing through the first support, the third support and the second support.

3. The walking apparatus of claim 2, wherein front wheels are connected to both ends of the front wheel drive shaft, and the rear wheel drive shaft comprises a left rear wheel drive shaft and a right rear wheel drive shaft; the third bracket comprises a left third bracket and a right third bracket;

the left rear wheel driving shaft is in transmission connection with the front wheel driving shaft through a driving wheel arranged on the left side of the front wheel driving shaft, a chain or a belt penetrating through the first bracket, the left third bracket and the second bracket and a driven wheel arranged on the left rear wheel driving shaft;

the right rear wheel driving shaft is in transmission connection with the front wheel driving shaft through a driving wheel arranged on the right side of the front wheel driving shaft, a chain or a belt penetrating through the first support, the right third support and the second support, and a driven wheel arranged on the right rear wheel driving shaft.

4. The walking device of claim 3, wherein each of the front wheel driving shaft and the rear wheel driving shaft is provided with a transmission device, the transmission device is connected with the wheels, and the transmission device can block power transmission to the wheels or can transmit power to the wheels to drive the wheels to rotate forwards or backwards.

5. The walking device of claim 4, wherein the transmission device can block power transmission to the wheels or can transmit power to the wheels to drive the wheels to rotate reversely;

the transmission device comprises a first positioning piece and a first planetary gear set arranged between the first positioning piece and a wheel;

the first positioning piece is provided with a first braking piece for braking the first positioning piece;

the first planetary gear set comprises a first sun gear connected with a wheel driving shaft, a first planetary gear set meshed with the first sun gear and a first outer gear ring meshed with the first planetary gear set;

the first planetary wheel set is connected to the first positioning piece through a first mounting rod;

the first outer gear ring is connected with a wheel.

6. The walking device of claim 5, wherein the first positioning member is a brake drum, and the first bracket and the second bracket are located on a side of the brake drum away from the wheel and are connected to a side of the brake drum away from the wheel.

7. The walking device of claim 4, wherein the transmission device can block power transmission to the wheels or can transmit power to the wheels to drive the wheels to rotate forwards;

the transmission device comprises a second positioning piece and a second planetary gear set arranged between the second positioning piece and the wheel;

the second positioning piece is provided with a second braking piece for braking the second positioning piece;

the second planetary gear set comprises a second sun gear connected with a wheel driving shaft, a second planetary gear set meshed with the second sun gear and a second outer gear ring meshed with the second planetary gear set;

the second planetary gear set is connected to the wheel through a second mounting rod;

the second external gear ring is connected with the second positioning piece.

8. The walking device of claim 7, wherein the second positioning member is a brake drum, and the first bracket and the second bracket are located on a side of the brake drum away from the wheel and are connected to a side of the brake drum away from the wheel.

9. The walking device of claim 4, wherein the transmission device comprises a first transmission mechanism on one side of the wheel and a second transmission mechanism on the other side of the wheel, the first transmission mechanism can drive the wheel to rotate forward, and the second transmission mechanism can drive the wheel to rotate backward;

the first transmission mechanism and the second transmission mechanism can block power to drive wheels or alternatively transmit power to the wheels.

10. The walking device of claim 1, further comprising a power system, wherein the output end of the power system is connected with a transmission shaft, one end of the transmission shaft, which is far away from the power system, is connected with a mechanical head, and an output gear is arranged on the transmission shaft between the mechanical head and the power system and is connected with a front wheel driving shaft through a transmission part.

11. A small agricultural machine characterized in that it comprises a walking device according to any one of claims 1 to 10.

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