CN215379757U

CN215379757U - Running gear transmission system and small agricultural machine

Info

Publication number: CN215379757U
Application number: CN202122120571.7U
Authority: CN
Inventors: 贾陆军; 于丽娜
Original assignee: Shandong Renzheng Wisdom Technology Co ltd
Current assignee: Shandong Renzheng Wisdom Technology Co ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-01-04
Anticipated expiration: 2031-09-03

Abstract

The utility model provides a transmission system of a walking device, which comprises a connecting piece and a steering device; one end of the connecting piece is connected with the walking part, and the other end of the connecting piece is connected with the steering device; the steering device is in transmission connection with the power device through a transmission shaft; the connecting piece is sleeved outside the transmission shaft and is rotationally connected with the transmission shaft. The connecting piece and the steering device are sequentially arranged from the side of the walking part to the side of the power device, and the steering function is realized by matching the steering device with the walking part; the connecting piece is sleeved outside the transmission shaft and is rotationally connected with the transmission shaft to prevent the transmission shaft from moving except for rotation; compared with the prior art without the connecting piece, the steering device has the advantages that the force exerted on the transmission shaft by the walking part is concentrated on the contact position of the steering device and the transmission shaft, the force exerted on the transmission shaft is concentrated on the section from the contact position of the steering device and the transmission shaft to the contact position of the connecting piece and the transmission shaft, the stress area is large, the bearing capacity is strong, the bending and shaft breaking caused by overlarge stress of the transmission shaft are avoided, the service life is long, frequent replacement is not needed, and the cost is low.

Description

Running gear transmission system and small agricultural machine

Technical Field

The utility model relates to the technical field of agricultural machinery, in particular to a transmission system of a walking device and a small agricultural machine.

Background

With the continuous development of agricultural mechanization, small agricultural machinery is widely applied to operation environments such as plowing, ditching, weeding, sowing and the like due to the characteristics of small volume, flexible operation and the like. The power of the power device output of the existing small agricultural machine is transmitted to the walking part through the gearbox, so that the steering cannot be realized, and the steering is performed manually when the steering is needed in actual operation, so that time and labor are wasted. To solve this problem, a technician tries to provide a steering device between the transmission case and the traveling portion to provide a steering function to the small agricultural machine. At this moment, power device, gearbox, steering gear, walking portion pass through power output shaft, transmission shaft transmission etc. and the transmission shaft should bear the reaction force that steering gear, walking portion exerted, and the transmission shaft is easy bending fracture, and life is short, needs often to change, and is with high costs.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model aims to provide a transmission system of a walking device and a small agricultural machine.

On one hand, the utility model provides a walking device transmission system, which comprises a connecting piece and a steering device, wherein one end of the connecting piece is connected with a walking part, and the other end of the connecting piece is connected with the steering device; the steering device is in transmission connection with the power device through a transmission shaft; the connecting piece is sleeved outside the transmission shaft, and the connecting piece is rotatably connected with the transmission shaft.

Compared with the prior art, the utility model has the following beneficial effects: the connecting piece and the steering device are sequentially arranged from the side of the walking part to the side of the power device, and the steering function is realized by matching the steering device with the walking part; the transmission shaft stretches out from the one end that turns to the device and is close to the connecting piece, the connecting piece cover is located outside the transmission shaft and is connected rather than rotating, the connecting piece makes the transmission shaft can only rotate, can prevent the transmission shaft displacement except that rotating, prevent the transmission shaft bending, in addition, compare with not possessing the connecting piece (turn to the device, the power that walking portion applyed on the transmission shaft is concentrated on the position that turns to device and transmission shaft contact, turn to the device, walking portion applys on the transmission shaft is concentrated on turning to the device and the position of transmission shaft contact to this section of connecting piece and transmission shaft contact's position, the lifting surface area grow, strong to the bearing capacity of power, avoid turning to the device, walking portion applys the too big crooked disconnected axle that causes of power on the transmission shaft, long service life, need not frequent change, and is low in cost.

In some embodiments of the present invention, the connecting member includes a housing and a supporting member, one end of the housing is connected to the traveling part, and the other end is connected to the steering device; the transmission shaft is sleeved with the support piece, the shell is provided with a containing cavity for mounting the support piece, and the outer diameter of the support piece is matched with the inner diameter of the containing cavity.

The technical scheme has the advantages that the connecting piece comprises a shell and a supporting piece, the supporting piece is sleeved on the transmission shaft, the shell is provided with an accommodating cavity for mounting the supporting piece, the shell is sleeved outside the supporting piece and the transmission shaft, one end of the shell is connected with the walking part, the other end of the shell is connected with the steering device, and the connecting piece is connected with the walking part and the steering device through the shell; the external diameter of support piece and the internal diameter phase-match in casing installation support piece's holding chamber, through the space between support piece support casing and the transmission shaft, and realize with the help of support piece that the connecting piece is connected with the rotation of transmission shaft, when the transmission shaft atress, the internal diameter cooperation in support piece external diameter and holding chamber is in order to inject the transmission shaft and rotate the displacement beyond, and then stops its bending, avoids the disconnected axle of transmission shaft, simultaneously, can avoid the transmission shaft tremble.

In some embodiments of the present invention, the walking device transmission system further includes a mounting plate, the walking portion and the connecting member are both connected to the mounting plate, and the mounting plate is located between the walking portion and the connecting member.

Adopt above-mentioned further technical scheme's beneficial effect to lie in, walking portion, connecting piece all are connected with the mounting disc, and the mounting disc is located between walking portion, the connecting piece, realizes being connected of walking portion and connecting piece promptly with the help of the mounting disc, and the connected mode is simple.

In some embodiments of the utility model, the connecting member is provided with a first connecting portion, and the mounting plate is mounted on the first connecting portion.

The mounting disc is connected with the connecting piece through the first connecting part, so that the mounting disc is stably connected; in addition, after the walking part is connected to the mounting disc, the first connecting part is matched with the mounting disc to increase the connection stability of the walking part, and the coaxiality of wheels of the walking part is guaranteed.

In some embodiments of the present invention, a thickness of the first connection portion is not less than a thickness of the mounting plate.

Adopt above-mentioned further technical scheme's beneficial effect to lie in, first connecting portion thickness is not less than mounting disc thickness, guarantees the firm of mounting disc and first connecting portion on the one hand and is connected, and on the other hand, when the thickness of first connecting portion is greater than the mounting disc, walking portion and mounting disc are connected the time, and the part that first connecting portion extend the mounting disc can be connected with walking portion, both can increase the stability of walking portion, can increase the wheel axiality of walking portion again.

In some embodiments of the present invention, the steering device comprises a transmission control mechanism connected to the linkage and a brake device connected to the transmission control mechanism, wherein the transmission control mechanism comprises a first positioning member, a second positioning member, and a planetary gear assembly; the first positioning piece is provided with a mounting rod, the second positioning piece is provided with an inner gear ring, and the planetary gear assembly comprises a sun gear arranged on the transmission shaft and a planetary gear set meshed with the sun gear; the planetary gear assembly is located in the second positioning piece, the planetary gear set is arranged on the mounting rod, and the inner gear ring is meshed with the planetary gear set.

The steering device comprises a transmission control mechanism connected with the connecting piece and a braking device connected with the transmission control mechanism, wherein the transmission control mechanism is positioned between the connecting piece and the braking device, and the transmission control mechanism is braked or not braked by the braking device so as to realize control on positive and negative rotation output or power blocking; when the first positioning piece is connected with the braking device, a planetary gear set arranged on an installation rod of the first positioning piece cannot revolve when the braking device brakes, a transmission shaft rotates to drive an inner gear ring to rotate in a direction opposite to the rotation direction of the transmission shaft, and then the second positioning piece rotates in a direction opposite to the rotation direction of the transmission shaft to output a reverse rotation function; when the second positioning piece is connected with the braking device, the inner gear ring of the second positioning piece cannot rotate when the braking device brakes, the transmission shaft rotates to drive the planetary gear set to rotate, and the first positioning piece rotates in the same direction as the transmission shaft to output a forward rotation function; no matter the first positioning piece or the second positioning piece is connected with the braking device, when the braking device is not braked, the transmission control mechanism does not have power to transmit outwards, and power is blocked. The transmission control mechanism can meet the requirements of small agricultural machinery manufacturers on forward rotation and reverse rotation, and when the small agricultural machinery manufacturers have reverse rotation requirements on the rotation direction transmitted by the steering device, the first positioning piece of the transmission control mechanism is connected with the braking device; when a small agricultural machinery manufacturer has a positive rotation requirement on the rotation direction transmitted by the steering device, the second positioning piece of the transmission control mechanism is connected with the braking device; the transmission control mechanism has flexible and variable use modes, can meet any requirement of small agricultural machinery manufacturers on the transmission rotating direction of the part steering device, and reduces the production cost of parts and avoids the problem of part lost due to different requirements of agricultural machinery manufacturers compared with the situation that the existing part manufacturers need to simultaneously produce the steering device with the forward rotating function and the steering device with the reverse rotating function (the existing steering device is single-adaptive, and the transmission rotating direction of the existing steering device can only realize the single forward rotating function or the single reverse rotating function) for the small agricultural machinery manufacturers to choose. In addition, the connecting piece only enables the transmission shaft to rotate, the connecting piece prevents the transmission shaft from displacing except for rotation and bending, the meshing relation among the sun gear on the transmission shaft, the planetary gear set meshed with the sun gear and the inner gear ring meshed with the planetary gear set can be protected, the damage speed of the sun gear, the planetary gear set and the inner gear ring is accelerated due to the fact that the local meshing force is increased and the local meshing force is decreased caused by bending of the transmission shaft, and the effect of protecting the sun gear, the planetary gear set and the inner gear ring is achieved.

In some embodiments of the present invention, the braking device is provided with a first opening at a position corresponding to the transmission shaft, the first positioning member is provided with a second opening at a position corresponding to the transmission shaft, the second positioning member is provided with a third opening at a position corresponding to the transmission shaft, and the transmission shaft passes through the first opening, the second opening and the third opening.

Adopt above-mentioned further technical scheme's beneficial effect to lie in, first opening, second opening and third opening are the transmission shaft and provide the passageway that passes, make things convenient for the transmission shaft to pass the back and be connected with the rotation of connecting piece.

In some embodiments of the present invention, the mounting plate, the connecting member, the first positioning member, the second positioning member and the braking device are provided with first mounting holes aligned with each other, and the mounting plate, the connecting member, the first positioning member, the second positioning member and the braking device are connected by the first mounting member through the first mounting holes.

The walking device transmission system has the advantages that the mutually aligned first mounting holes in the mounting disc, the connecting piece, the first positioning piece, the second positioning piece and the braking device are used for realizing the connection among all the components of the walking device transmission system, and the first mounting pieces penetrate through the first mounting holes to be connected into a whole, so that the connection stability is improved.

In some embodiments of the utility model, the mounting plate is provided with a second mounting hole, and the mounting plate and the walking part are connected through the second mounting hole by a second mounting piece.

Adopt above-mentioned further technical scheme's beneficial effect to lie in, the second mounting hole that sets up on the mounting disc is used for realizing being connected of walking portion and mounting disc, passes the second mounting hole with the second installed part in order to connect it as a whole, increases connection stability.

In some embodiments of the utility model, the number of mounting posts is at least two.

The further technical scheme has the advantages that the number of the planet gears of the planetary gear set is related to the number of the mounting rods, and the number of the planet gears is preferably consistent to ensure that each mounting rod is provided with the planet gear; when the number of the planetary gears is at least two, the stability of the meshing transmission of the planetary gears, the sun gear and the inner gear ring is improved.

In some embodiments of the utility model, one of the first positioning member and the second positioning member is detachably connected to the braking device, and the other is detachably connected to the connecting member.

The steering device has the advantages that one of the first positioning piece and the second positioning piece is detachably connected with the braking device, the other one of the first positioning piece and the second positioning piece is detachably connected with the connecting piece, the integral dismounting of the transmission control mechanism is realized through the detachable connection of the braking device and the first positioning piece or the second positioning piece and the detachable connection of the connecting piece and the second positioning piece or the first positioning piece, compared with the conventional steering device with only single forward rotation function or reverse rotation function, the connection mode of the first positioning piece or the second positioning piece, the braking device and the connecting piece (for example, the connection mode of the first positioning piece and the braking device and the connection mode of the second positioning piece and the connecting piece are reverse rotation function when the first positioning piece and the braking device are connected, the first positioning piece is dismounted from the braking device, the second positioning piece is dismounted from the connecting piece, and the second positioning piece and the braking device are connected, The first positioning piece is connected with the connecting piece, and then the forward rotation function is switched; the second positioning piece is connected with the braking device, the first positioning piece has a positive rotation function when being connected with the connecting piece, the second positioning piece is detached from the braking device, the first positioning piece is detached from the connecting piece and is connected with the braking device, the second positioning piece is connected with the connecting piece and is switched to a reverse rotation function, the reverse rotation function or the positive rotation function can be switched, and the positive rotation or reverse rotation requirement of the rotation direction transmitted by the component steering device by small agricultural machinery manufacturers is met.

In some embodiments of the utility model, the first positioning member is provided with a second connecting portion, the second positioning member is provided with a third connecting portion, the braking device is provided with a fourth connecting portion matching with the second connecting portion or the third connecting portion, and the connecting member is provided with a fifth connecting portion matching with the second connecting portion or the third connecting portion.

The beneficial effects of adopting the above-mentioned further technical scheme lie in, be equipped with the second connecting portion on the first setting element, be equipped with the third connecting portion on the second setting element, arresting gear is equipped with the fourth connecting portion with second connecting portion or third connecting portion matched with, the connecting piece is equipped with the fifth connecting portion with second connecting portion or third connecting portion matched with, be connected through the cooperation of second connecting portion or third connecting portion and fourth connecting portion, the second connecting portion or third connecting portion that do not matched with the fourth connecting portion are connected with the cooperation of fifth connecting portion, realize being connected of first setting element or second setting element and arresting gear or connecting piece, connected mode is simple, make things convenient for the split, and then realize the switching of reversal function or corotation function easily, conveniently drive the wheel corotation or reversal or do not change when not braking.

In some embodiments of the present invention, the steering device further comprises an oil seal, the oil seal being located between the second positioning member and the connecting member when the second positioning member is connected to the braking device; when the second positioning piece is connected with the connecting piece, the oil seal is positioned between the second positioning piece and the braking device.

Adopt above-mentioned further technical scheme's beneficial effect to lie in, the oil blanket plays the effect of sealing member for it is sealed, prevents the oil leakage among the transmission control mechanism.

In some embodiments of the utility model, the braking device comprises a brake drum connected with the transmission control mechanism and a brake connected with the brake drum, one of the first positioning element and the second positioning element is detachably connected with the brake drum, and the other one of the first positioning element and the second positioning element is detachably connected with the connecting element.

Adopt above-mentioned further technical scheme's beneficial effect to lie in, arresting gear includes brake drum and stopper, through the cooperation of stopper and brake drum, realizes the braking to first setting element or second setting element, and brake drum and stopper can adopt current technique, and the braking mode is nimble, convenient braking. In addition, can dismantle the split of connecting after making things convenient for first setting element or second setting element and brake drum, connecting piece to be connected, and then realize the connection conversion (the second setting element is connected with the brake drum, first setting element is connected with the connecting piece and is converted into first setting element and is connected with the brake drum, the second setting element is connected with the connecting piece, or first setting element is connected with the brake drum, the second setting element is connected with the connecting piece and is converted into the second setting element and is connected with the brake drum, first setting element is connected with the connecting piece), and then realize the switching of just reversing function.

On the other hand, the utility model also provides a small agricultural machine which comprises the walking device transmission system.

Compared with the prior art, the utility model has the following beneficial effects: the small agricultural machine comprises the walking device transmission system. The steering function is realized by matching the steering device with the walking part; the transmission shaft stretches out from the one end that turns to the device and is close to the connecting piece, the connecting piece cover is located outside the transmission shaft and is connected rather than rotating, the connecting piece makes the transmission shaft can only rotate, can prevent the transmission shaft displacement except that rotating, prevent the transmission shaft bending, in addition, compare with not possessing the connecting piece (turn to the device, the power that walking portion applyed on the transmission shaft is concentrated on the position that turns to device and transmission shaft contact, turn to the device, walking portion applys on the transmission shaft is concentrated on turning to the device and the position of transmission shaft contact to this section of connecting piece and transmission shaft contact's position, the lifting surface area grow, strong to the bearing capacity of power, avoid turning to the device, walking portion applys the too big crooked disconnected axle that causes of power on the transmission shaft, long service life, need not frequent change, and is low in cost.

Drawings

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

Fig. 1 is a schematic structural diagram of a transmission system of a walking device according to an embodiment of the present invention, in which fig. 1a is a schematic structural diagram of a transmission system of a walking device in which a first positioning element is connected to a braking device, and fig. 1b is a schematic structural diagram of a transmission system of a walking device in which a second positioning element is connected to a braking device;

FIG. 2 is a schematic view of a transmission control mechanism according to an embodiment of the present invention, wherein FIG. 2a is a schematic view of the transmission control mechanism, and FIG. 2b is a perspective view of a junction of a first positioning member, a second positioning member and a planetary gear assembly of the transmission control mechanism;

fig. 3 is a schematic structural diagram of a first positioning member of the transmission control mechanism according to an embodiment of the present invention, wherein fig. 3a is a front view of the first positioning member, and fig. 3b is a rear view of the first positioning member;

fig. 4 is a schematic structural diagram of a second positioning element of the transmission control mechanism according to an embodiment of the present invention, in which fig. 4a is a front view of the second positioning element, and fig. 4b is a rear view of the second positioning element;

FIG. 5 is a schematic structural view of a planetary gear assembly of the transmission control mechanism according to one embodiment of the present invention;

fig. 6 is a schematic structural diagram of a mounting plate of a transmission system of a walking device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of various aspects of the present invention is provided with specific examples, which are only used for illustrating the present invention and do not limit the scope and spirit of the present invention.

The present embodiments provide a running gear transmission system. Fig. 1 shows a schematic structural diagram of a transmission system of a walking device in this embodiment, in which fig. 1a is a schematic structural diagram of a transmission system of a walking device in which a first positioning member is connected to a braking device, and fig. 1b is a schematic structural diagram of a transmission system of a walking device in which a second positioning member is connected to a braking device; FIG. 2 is a schematic diagram of the transmission control mechanism of the present embodiment, in which FIG. 2a is a schematic diagram of the transmission control mechanism, and FIG. 2b is a perspective view of a junction of a first positioning member, a second positioning member and the planetary gear assembly of the transmission control mechanism; fig. 3 is a schematic structural diagram of a first positioning member of the transmission control mechanism of the embodiment, wherein fig. 3a is a front view of the first positioning member, and fig. 3b is a rear view of the first positioning member; fig. 4 is a schematic structural diagram illustrating a second positioning member of the transmission control mechanism of the embodiment, wherein fig. 4a is a front view of the second positioning member, and fig. 4b is a rear view of the second positioning member; FIG. 5 is a schematic diagram of the construction of the planetary gear assembly of the transmission control mechanism of the present embodiment; fig. 6 is a schematic structural view showing a mounting plate of the running gear transmission system of the present embodiment.

As shown in fig. 1, the running gear transmission system of the present embodiment includes a link 100 and a steering device 200. Wherein, one end of the connecting piece 100 is connected with the walking part 300, and the other end is connected with the steering device 200; the steering device 200 is in transmission connection with a power device (not shown in the figure) through a transmission shaft 400; the connecting member 100 is sleeved outside the transmission shaft 400, and the connecting member 100 is rotatably connected with the transmission shaft 400. In this embodiment, the steering device 200 is in transmission connection with the power output shaft of the power device through the transmission shaft 400, and other structures may be arranged between the transmission shaft 400 and the power output shaft, and the specific structures of the other structures are not limited, for example, the other structures may be a structure dedicated for transmission, as long as the transmission can be realized, for example, the adaptability adjustment may be performed according to the structure of an actual small agricultural machine.

As shown in fig. 1, in the present embodiment, the connecting member 100 includes a housing 101 and a supporting member 102, one end of the housing 101 is connected to the traveling unit 300, and the other end is connected to the steering device 200; the supporting member 102 is sleeved on the transmission shaft 400, the housing 101 is provided with an accommodating cavity 1011 for mounting the supporting member 102, and the outer diameter of the supporting member 102 is matched with the inner diameter of the accommodating cavity 1011. In the present embodiment, the support 102 supports the space between the housing 101 and the transmission shaft 400, and the outer diameter of the support 102 matches the inner diameter of the receiving cavity 1011 of the housing 101 for mounting the support 102 to prevent the transmission shaft 400 from being displaced except for rotation. In this embodiment, it is preferable that the outer diameter of the support 102 and the inner diameter of the receiving cavity 1011 of the housing 101 for mounting the support 102 are just enough to allow the transmission shaft 400 to rotate around the axial direction of the transmission shaft 400 relative to the housing 101, but not to displace in other directions. In the present embodiment, the number of the supporting members 102 is not limited, and the technician may set the number according to actual conditions. In the present embodiment, the supporting member 102 may be a bearing, but the supporting member 102 of the present embodiment is not limited to a bearing, and a person skilled in the art can reasonably select the supporting member 102 as long as the space between the supporting housing 101 and the transmission shaft 400 can be satisfied and the rotational connection between the transmission shaft 400 and the connecting member 100 can be ensured.

In this embodiment, the transmission system of the walking device further includes a mounting plate 500, the walking portion 300 and the connecting member 100 are both connected to the mounting plate 500, and the mounting plate 500 is located between the walking portion 300 and the connecting member 100. The connecting member 100 is provided with a first connecting portion 1012, and the mounting plate 500 is mounted on the first connecting portion 1012. In the present embodiment, the structure of the first connecting portion 1012 is not limited as long as it is possible to realize that the mounting plate 500 can be mounted on the first connecting portion 1012, and for example, the first connecting portion 1012 may be a first mounting table provided at an end of the link 100 away from the steering apparatus 200. As shown in fig. 6, the mounting plate 500 is provided with a mounting hole 502 matching with the first connection portion 1012, and the mounting plate 500 is sleeved on the first connection portion 1012 through the mounting hole 502. In the present embodiment, it is preferable that the thickness of the first connection portion 1012 is not less than the thickness of the mounting plate 500. In the present embodiment, the mounting plate 500 is provided with a second mounting hole 501, and the mounting plate 500 and the traveling unit 300 are connected by a second mounting tool through the second mounting hole 501. The running part 300 (including the wheel) is preferably mounted on the mounting plate 500 via a wheel hub, in particular, via a third mounting hole on the wheel hub, by means of a second mounting element, to a second mounting hole 501 on the mounting plate. In the present embodiment, the structure of the second mounting member is not limited as long as the connection of the mounting plate 500 and the traveling part 300 can be achieved in cooperation with the second mounting hole 501.

In the present embodiment, as shown in fig. 1 to 5, the steering device 200 includes a transmission control mechanism 201 connected to the link 100 and a brake device 202 connected to the transmission control mechanism 201. The transmission control mechanism 201 comprises a first positioning part 1, a second positioning part 2 and a planetary gear assembly 3; the first positioning part 1 is provided with a mounting rod 11, the second positioning part 2 is provided with an annular gear 21, and the planetary gear assembly 3 comprises a sun gear 31 arranged on a transmission shaft 400 and a planetary gear set 32 meshed with the sun gear 31; the planetary gear assembly 3 is located in the second positioning member 2, the planetary gear set 32 is disposed on the mounting rod 11, and the ring gear 21 is engaged with the planetary gear set 32.

In the embodiment, a first opening (not shown) is formed in a position of the braking device 202 corresponding to the transmission shaft 400, a second opening 12 is formed in a position of the first positioning member 1 corresponding to the transmission shaft 400, a third opening 22 is formed in a position of the second positioning member 2 corresponding to the transmission shaft 400, and the transmission shaft 400 passes through the first opening, the second opening 12 and the third opening 22.

In this embodiment, the mounting plate 500, the connecting member 100, the first positioning member 1, the second positioning member 2 and the braking device 202 are provided with first mounting holes 14 aligned with each other, and the mounting plate 500, the connecting member 100, the first positioning member 1, the second positioning member 2 and the braking device 202 are connected through the first mounting holes 14 by means of first mounting members. The structure of the first mounting member is not limited as long as the connection of the mounting plate 500, the connecting member 100, the first positioning member 1, the second positioning member 2 and the braking device 202 can be achieved by fitting the first mounting hole 14.

In the present embodiment, the number of the mounting bars 11 is at least two. In the present embodiment, the number of the mounting rods 11 is not limited as long as it is equal to or greater than two, and preferably, the number of the mounting rods 11 may be two, three, or four, and the planetary gear set 32 includes the planetary gears 321 in accordance with the number of the mounting rods 11.

In this embodiment, one of the first positioning member 1 and the second positioning member 2 is detachably connected to the stopper 202, and the other is detachably connected to the connecting member 100. As shown in fig. 1a, the first positioning element 1 is detachably connected to the braking device 202, the second positioning element 2 is detachably connected to the connecting element 100, and fig. 1b shows the second positioning element 2 is detachably connected to the braking device 202, and the first positioning element 1 is detachably connected to the connecting element 100. In this embodiment, the first positioning element 1 is provided with a second connecting portion 13, the second positioning element 2 is provided with a third connecting portion 23, the braking device 202 is provided with a fourth connecting portion cooperating with the second connecting portion 13 or the third connecting portion 23, and the connecting element 100 is provided with a fifth connecting portion cooperating with the second connecting portion 13 or the third connecting portion 23. In this embodiment, the structures of the second connecting portion 13, the third connecting portion 23, the fourth connecting portion, and the fifth connecting portion are not limited as long as the second connecting portion 13, the third connecting portion 23, the fourth connecting portion, and the fifth connecting portion can be connected in a matching manner, for example, the second connecting portion 13 may be a second mounting platform disposed on an end surface of the first positioning member 1 where the mounting rod 11 is not disposed, the third connecting portion 23 may be a third mounting platform disposed on an end surface of the second positioning member 2 away from the first positioning member 1, the fourth connecting portion and the fifth connecting portion may be grooves matched with the second mounting platform or the third mounting platform, and the matching connection is achieved by inserting the second mounting platform or the third mounting platform into the fourth connecting portion or the fifth connecting portion; in addition, since the mounting plate 500, the connecting member 100, the first positioning member 1, the second positioning member 2 and the braking device 202 are provided with the first mounting holes 14 aligned with each other, and the first mounting members are connected through the first mounting holes 14, when the first mounting members need to be detached, the first mounting members are detached, and the fourth connecting portion or the fifth connecting portion which is matched with the fourth connecting portion or the fifth connecting portion is separated from the second mounting table or the third mounting table.

In this embodiment, an oil seal groove 24 is disposed on an end surface of the second positioning member 2 away from the third connecting portion 23, and can be used for installing an oil seal to prevent oil leakage in the transmission control mechanism 201 of this embodiment. The steering device 200 comprises an oil seal 203, as shown in fig. 1b, when the second positioning member 2 is connected with the braking device 202, the oil seal 203 is positioned between the second positioning member 2 and the connecting member 100; as shown in fig. 1a, when the second positioning member 2 is coupled to the coupling member 100, the oil seal 203 is located between the second positioning member 2 and the braking device 202.

In this embodiment, the braking device 202 includes a brake drum 2021 connected to the transmission control mechanism 201 and a brake 2022 connected to the brake drum 2021, one of the first positioning element 1 and the second positioning element 2 is detachably connected to the brake drum 2021, and the other is detachably connected to the connecting element 100. Specifically, the fourth connecting portion is disposed on the brake drum 2021, and the first positioning element 1 or the second positioning element 2 is detachably connected to the brake drum 2021 by the fourth connecting portion and the second connecting portion 13 or the third connecting portion 23 being engaged with each other.

As shown in fig. 1a, a scheme that the first positioning element 1 is detachably connected with the braking device 202, the second positioning element 2 is detachably connected with the connecting element 100 is shown, the fourth connecting portion of the braking device 202 is cooperatively connected with the second connecting portion 13, and the fifth connecting portion of the connecting element 100 is cooperatively connected with the third connecting portion 23. Specifically, the brake device 202 includes a brake drum 2021 and a brake 2022, the fourth connecting portion is disposed on the brake drum 2021, and the first positioning member 1 is detachably connected to the brake drum 2021. The structure of the brake device 202 including the brake drum 2021 and the brake 2022 in this embodiment is not limited as long as the first positioning member 1 can be braked.

As shown in fig. 1b, the second positioning element 2 is detachably connected to the braking device 202, the first positioning element 1 is detachably connected to the connecting element 100, the fourth connecting portion of the braking device 202 is connected to the third connecting portion 23 in a matching manner, and the fifth connecting portion of the connecting element 100 is connected to the second connecting portion 13 in a matching manner. Specifically, the braking device 202 includes a brake drum 2021 and a brake 2022, the fourth connecting portion is disposed on the brake drum 2021, and the second positioning member 2 is detachably connected to the brake drum 2021. The structure of the brake device 202 including the brake drum 2021 and the brake 2022 in this embodiment is not limited as long as the second retainer 2 can be braked.

In the present embodiment, the transmission control mechanism 201 of the steering device 200 and the braking device 202 have the above two connection schemes, and can respectively realize the forward rotation function and the reverse rotation function. Specifically, when the scheme of fig. 1a is adopted, the first positioning element 1 is detachably connected with the braking device 202, the planetary gear set 32 arranged on the mounting rod 11 of the first positioning element 1 cannot revolve when the braking device 202 brakes, the transmission shaft 400 rotates, the driving ring gear 21 rotates in the direction opposite to the rotation direction of the transmission shaft 400, the second positioning element 2 rotates in the direction opposite to the rotation direction of the transmission shaft 400, the reversing function is output, and the connecting element 100 and the walking part 300 connected with the second positioning element 2 reverse; when the scheme of fig. 1b is adopted, the first positioning member 1 is detached from the braking device 202, the second positioning member 2 is detached from the connecting member 100 and then connected with the second positioning member 2 and the braking device 202, the first positioning member 1 is connected with the connecting member 100, the inner gear ring 21 of the second positioning member 2 cannot rotate when the braking device 202 brakes, the transmission shaft 400 rotates to drive the planetary gear set 32 to rotate, the first positioning member 1 rotates in the same direction as the transmission shaft 400, the forward rotation function is output, and the connecting member 100 and the walking part 300 which are connected with the first positioning member 1 rotate forward. In the present embodiment, the traveling portion may include a plurality of wheels, preferably two wheels including left and right wheels, or four wheels including left and right front wheels and left and right rear wheels. Each wheel or only the front wheel is connected with the connecting piece of the embodiment, each connecting piece is connected with the steering device 200, when the steering devices connected with the connecting pieces output forward rotation functions, the left wheel and the right wheel both rotate forward, and the small agricultural machine moves forward; when the steering devices connected with the connecting piece output a reverse rotation function, the left wheel and the right wheel both reverse, and the small agricultural machine retreats; when the steering device of the wheel on one side outputs a forward rotation or reverse rotation function and the steering device of the wheel on the other side does not brake (unpowered output and the wheel does not rotate), the small agricultural machine steers.

The embodiment also provides a small agricultural machine which comprises the walking device transmission system of the embodiment.

The present invention has been described in conjunction with specific embodiments which are intended to be exemplary only and are not intended to limit the scope of the utility model, which is to be given the full breadth of the appended claims and any and all modifications, variations or alterations that may occur to those skilled in the art without departing from the spirit of the utility model. Therefore, various equivalent changes made according to the present invention still fall within the scope covered by the present invention.

Claims

1. A transmission system of a walking device is characterized by comprising a connecting piece and a steering device,

one end of the connecting piece is connected with the walking part, and the other end of the connecting piece is connected with the steering device;

the steering device is in transmission connection with the power device through a transmission shaft;

the connecting piece is sleeved outside the transmission shaft, and the connecting piece is rotatably connected with the transmission shaft.

2. The running gear transmission system of claim 1, wherein the linkage comprises a housing and a support member, the housing being connected to the running section at one end and to the steering device at the other end;

the transmission shaft is sleeved with the support piece, the shell is provided with a containing cavity for mounting the support piece, and the outer diameter of the support piece is matched with the inner diameter of the containing cavity.

3. The running gear transmission system of claim 1, further comprising a mounting plate, wherein the running part and the connecting member are both connected to the mounting plate, and the mounting plate is located between the running part and the connecting member.

4. The walker transmission system as claimed in claim 3 wherein said attachment members are provided with first attachment portions and said mounting plate is mounted on said first attachment portions.

5. The walker transmission system as claimed in claim 4 wherein the thickness of said first coupling portion is no less than the thickness of said mounting plate.

6. The walker transmission system as claimed in claim 1 wherein said steering means includes a transmission control mechanism connected to the linkage and a brake device connected to said transmission control mechanism,

the transmission control mechanism comprises a first positioning piece, a second positioning piece and a planetary gear assembly;

the first positioning piece is provided with a mounting rod, the second positioning piece is provided with an inner gear ring,

the planetary gear assembly comprises a sun gear arranged on the transmission shaft and a planetary gear set meshed with the sun gear;

the planetary gear assembly is located in the second positioning piece, the planetary gear set is arranged on the mounting rod, and the inner gear ring is meshed with the planetary gear set.

7. The walker transmission system as claimed in claim 6 wherein the brake assembly defines a first opening at a location corresponding to the drive shaft, the first positioning member defines a second opening at a location corresponding to the drive shaft, the second positioning member defines a third opening at a location corresponding to the drive shaft, and the drive shaft extends through the first, second and third openings.

8. The walker transmission system as claimed in claim 6 wherein one of said first and second positioning members is removably connected to said brake and the other is removably connected to said attachment member;

the brake device is characterized in that a second connecting portion is arranged on the first positioning piece, a third connecting portion is arranged on the second positioning piece, a fourth connecting portion matched with the second connecting portion or the third connecting portion is arranged on the brake device, and a fifth connecting portion matched with the second connecting portion or the third connecting portion is arranged on the connecting piece.

9. The walker transmission system of claim 8 wherein said steering device further comprises an oil seal,

when the second positioning piece is connected with the braking device, the oil seal is positioned between the second positioning piece and the connecting piece; when the second positioning piece is connected with the connecting piece, the oil seal is positioned between the second positioning piece and the braking device.

10. A small agricultural machine characterized in that it comprises a running gear transmission system according to any one of claims 1 to 9.