CN214215969U

CN214215969U - Variable crawler chassis of agricultural machine

Info

Publication number: CN214215969U
Application number: CN202023294458.2U
Authority: CN
Inventors: 李建军
Original assignee: Yunnan Agricultural University
Current assignee: Yunnan Agricultural University
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-09-17
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a variable crawler chassis of agricultural machinery, which comprises a supporting plate, wherein the front surface of the supporting plate is provided with a bidirectional motor, the bidirectional motor is provided with two first gears, two first gears are meshed and connected with a second gear, a transmission shaft is arranged between the two second gears, the upper end and the lower end of the transmission shaft are respectively connected with a first bevel gear, the upper side and the lower side of the supporting plate are respectively connected with a first sleeve, the inner parts of the two first sleeves are rotatably connected with a lead screw, the right ends of the two lead screws are respectively provided with a second bevel gear, the two first bevel gears are respectively meshed and connected with the second bevel gear, the two lead screws are respectively in threaded connection with the second sleeve, in the using process, the agricultural machinery is immersed in soil, the crawler can be ensured to be tightly jointed with the soil by changing the axle distance, strengthen the track and grab the land fertility, promote by a wide margin the utility model discloses trafficability characteristic in the working process.

Description

Variable crawler chassis of agricultural machine

Technical Field

The utility model relates to the technical field of agricultural machinery, the concrete field is an agricultural machine's variable track chassis.

Background

The crawler-type chassis has good cross-country performance due to the special travelling mechanism of the crawler-type chassis, and the requirement on a passing road is much lower than that of a wheel-type chassis, so that a plurality of construction vehicles and agricultural machinery adopt the crawler-type chassis; the crawler-type transport vehicle generally has the capabilities of climbing, crossing a bank and crossing a ditch; the crawler type chassis commonly used at present usually comprises two crawler belt structures, the existing crawler belt structure is a trapezoidal structure with a narrow upper part and a wide lower part, at the moment, the contact area of the crawler belt and the ground is large, the pressure of the machinery to the ground can be greatly reduced, the walking on a smooth road surface is facilitated, but the trafficability of the crawler belt is poor, when the agricultural machinery adopting the crawler type chassis works in the field, the ditch sill arranged between fields can be faced, meanwhile, the agricultural machinery can be trapped in the field due to the fact that the pressure is too large, a variable crawler type chassis is urgently needed to ensure good trafficability in the working process of the agricultural machinery, and therefore the variable crawler type chassis of the agricultural machinery is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an agricultural machine's variable track chassis to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a variable crawler chassis of agricultural machinery comprises a supporting plate, wherein a bidirectional motor is arranged on the front surface of the supporting plate, first gears are respectively arranged at the upper output end and the lower output end of the bidirectional motor, second gears are respectively meshed and connected to the right sides of the two first gears, a transmission shaft is arranged between the two second gears, the upper end and the lower end of the transmission shaft respectively penetrate through the two second gears and are connected with first bevel gears, first sleeves are respectively connected to the upper side and the lower side of the supporting plate, lead screws are rotatably connected to the insides of the two first sleeves, second bevel gears are respectively arranged at the right ends of the two lead screws, the two first bevel gears are respectively meshed and connected with the second bevel gears, second sleeves are respectively slidably connected to the insides of the two first sleeves, thread grooves are respectively arranged inside the two second sleeves, and the two lead screws are respectively in threaded connection with the thread grooves of the second sleeves, two first telescopic right-hand member is equipped with the installation bearing respectively, two the inboard of installation bearing is rotated respectively and is connected with the action wheel, the telescopic left end of second is equipped with the installation piece respectively, two be connected with between the installation piece from the driving wheel, two the telescopic inboard left end of second is equipped with the mounting panel respectively, two the front surface of mounting panel is equipped with respectively props tight pulley, both sides also are equipped with from the top to the bottom of the front surface of backup pad props tight pulley, the action wheel, from the driving wheel and prop tight pulley's outer edge meshing and be connected with the track.

Preferably, the diameter of the driving wheel is larger than that of the driven wheel.

Preferably, an output shaft is fixedly connected between the two driving wheels.

Preferably, a support rod is respectively connected between the two mounting plates and between the driven wheels.

Preferably, the outer surface of the crawler belt is provided with prismatic protrusions.

Preferably, the lower end of the tensioning wheel is connected with a telescopic rod, and the outside of the two telescopic rods is sleeved with a spring.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides an agricultural machine's variable track chassis drives first gear revolve through two-way motor's output, through first gear, the second gear, the transmission shaft, first bevel gear, the mechanical transmission relation between second bevel gear and the lead screw, realized carrying out concertina movement for first sleeve to the second sleeve, and then realized changing the action wheel and following the wheel-base between the driving wheel, prop tight wheel and can guarantee constantly that the track is connected with the action wheel and meshing from between the driving wheel, ingenious cooperation through mechanical parts, promoted by a wide margin the utility model discloses a pass through performance and stranded performance, in the use, agricultural machine is absorbed in soil and can be guaranteed that the track can closely laminate with soil through the mode that changes the wheel-base, strengthens track grip.

Drawings

FIG. 1 is a schematic sectional view of the front view of the present invention;

fig. 2 is a schematic view of the structure of the present invention;

fig. 3 is a schematic diagram of the right-side view structure of the present invention;

FIG. 4 is an enlarged view of the point A in FIG. 1;

fig. 5 is an enlarged schematic view of B in fig. 3.

In the figure: the device comprises a support plate 1, a bidirectional motor 2, a first gear 3, a second gear 4, a transmission shaft 5, a first bevel gear 6, a first sleeve 7, a lead screw 8, a second bevel gear 9, a second sleeve 10, a mounting bearing 11, a driving wheel 12, a mounting block 13, a driven wheel 14, a mounting plate 15, a telescopic rod 16, a spring 17, a tensioning wheel 18, a crawler 19, an output shaft 20, a support rod 21 and a prismatic protrusion 22.

Detailed Description

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

Referring to fig. 1-5, the present invention provides a technical solution: a variable crawler chassis of agricultural machinery comprises a supporting plate 1, wherein a bidirectional motor 2 is arranged on the front surface of the supporting plate 1, first gears 3 are respectively arranged at the upper output end and the lower output end of the bidirectional motor 2, second gears 4 are respectively meshed and connected with the right sides of the two first gears 3, a transmission shaft 5 is arranged between the two second gears 4, the upper end and the lower end of the transmission shaft 5 respectively penetrate through the two second gears 4 and are connected with first bevel gears 6, first sleeves 7 are respectively connected with the upper side and the lower side of the supporting plate 1, a lead screw 8 is rotatably connected inside the two first sleeves 7, second bevel gears 9 are respectively arranged at the right ends of the two lead screws 8, the two first bevel gears 6 are respectively meshed and connected with the second bevel gears 9, second sleeves 10 are respectively slidably connected inside the two first sleeves 7, and thread grooves are respectively arranged inside the two second sleeves 10, the two lead screws 8 are respectively in threaded connection with thread grooves of the second sleeves 10, the output end of the bidirectional motor 2 drives the two first gears 3 to rotate, the two first gears 3 drive the second gears 4 to rotate, the two second gears 4 drive the transmission shaft 5 to rotate, the transmission shaft 5 drives the first bevel gears 6 at the upper end and the lower end of the transmission shaft to rotate, the first bevel gears 6 drive the second bevel gears 9 to rotate, the second bevel gears 9 drive the lead screws 8 to rotate, telescopic movement of the two second sleeves 10 relative to the first sleeves 7 is realized through the threaded connection relationship between the lead screws 8 and the second sleeves 10 and the mutual limiting action between the two second sleeves 10, the right ends of the two first sleeves 7 are respectively provided with mounting bearings 11, the inner sides of the two mounting bearings 11 are respectively in rotary connection with driving wheels 12, and the driving wheels 12 are directly connected with the engine of the agricultural machine through a transmission device, the driving wheel 12 provides power for the utility model, the left end of the second sleeve 10 is respectively provided with mounting blocks 13, two mounting blocks 13 are connected with a driven wheel 14, the inner left ends of the two second sleeves 10 are respectively provided with a mounting plate 15, the front surfaces of the two mounting plates 15 are respectively provided with a tensioning wheel 18, the upper and lower sides of the front surface of the support plate 1 are also provided with the tensioning wheels 18, the outer edges of the driving wheel 12, the driven wheel 14 and the tensioning wheels 18 are engaged with a crawler belt 19, the driving wheel 12 drives the driven wheel 14 to rotate through the conduction of the crawler belt 19, the tensioning wheels 18 follow the crawler belt 19 to rotate, the axial distance between the driving wheel 12 and the driven wheel 14 is indirectly adjusted through the bidirectional motor 2, the crawler belt 19 follows the driving wheel 12 and the driven wheel 14 to move, the tensioning wheels 18 ensure that the crawler belt 19 is tightly engaged with the driving wheel 12 and the driven wheel 14, and further ensure that the crawler belt 19 can be tightly attached to soil, strengthen track 19 and grab the land fertility, promoted by a wide margin the utility model discloses a performance and the performance of getting rid of poverty of passing through.

Specifically, the diameter of the driving wheel 12 is larger than that of the driven wheel 14, so that the driving wheel 12 can easily drive the driven wheel 14, and the work efficiency of the agricultural machine itself is indirectly ensured.

Specifically, an output shaft 20 is fixedly connected between the two driving wheels 12, and the output shaft 20 can be directly mechanically connected with an engine or a gearbox of an agricultural machine to directly drive the two driving wheels 12 to rotate.

Particularly, two be connected with bracing piece 21 between the mounting panel 15 and from between the driving wheel 14 respectively, bracing piece 21 can effectual assurance the utility model discloses a stability.

Specifically, the outer surface of the crawler belt 19 is provided with the ridge protrusions 22, and the ridge protrusions 22 can increase the grip of the crawler belt 19.

Specifically, the lower extreme of propping tight wheel 18 is connected with telescopic link 16, two the outside cover of telescopic link 16 has spring 17, and when propping tight wheel 18 and receiving the pressure of track 19 transmission, telescopic link 16 follows the shrink of spring 17, has guaranteed that track 19 can follow the wheel base of action wheel 12 and follow driving wheel 14 and change, also guarantees simultaneously that track 19 meshes with action wheel 14 and follow driving wheel 14 constantly and is connected in this in-process.

The working principle is as follows: when the utility model is used, the output shaft 20 of the driving wheel 12 is mechanically connected with the engine or the gearbox of the agricultural machine itself, the two-way motor 2 is started, the output end of the two-way motor 2 drives the two first gears 3 to rotate, the two first gears 3 drive the second gears 4 to rotate, the two second gears 4 drive the transmission shaft 5 to rotate, the transmission shaft 5 drives the first bevel gears 6 at the upper and lower ends to rotate, the first bevel gears 6 drive the second bevel gears 9 to rotate, the second bevel gears 9 drive the lead screws 8 to rotate, through the threaded connection relationship between the lead screws 8 and the second sleeves 10 and the mutual limiting action between the two second sleeves 10, the two second sleeves 10 can perform telescopic motion relative to the first sleeves 7, the axle distance between the driving wheel 12 and the driven wheel 14 can be adjusted, the crawler 19 can follow the driving wheel 12 and the driven wheel 14 to move, the tightening wheel 18 can ensure that the crawler 19 is tightly meshed with the driving wheel 12 and the driven wheel 14, and then guaranteed that track 19 can closely laminate with soil, strengthened track 19 and grabbed the land fertility, promoted by a wide margin the utility model discloses a performance and the performance of getting rid of poverty.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.

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

Claims

1. A variable-track undercarriage for agricultural machines, comprising a support plate (1), characterized in that: the front surface of the supporting plate (1) is provided with a two-way motor (2), the upper and lower output ends of the two-way motor (2) are respectively provided with a first gear (3), the right sides of the two first gears (3) are respectively connected with a second gear (4) in a meshing manner, a transmission shaft (5) is arranged between the two second gears (4), the upper and lower ends of the transmission shaft (5) respectively penetrate through the two second gears (4) and are connected with a first bevel gear (6), the upper and lower sides of the supporting plate (1) are respectively connected with a first sleeve (7), the inner parts of the two first sleeves (7) are rotatably connected with lead screws (8), the right ends of the two lead screws (8) are respectively provided with second bevel gears (9), the two first bevel gears (6) are respectively connected with the second bevel gears (9) in a meshing manner, and the inner parts of the two first sleeves (7) are respectively connected with second sleeves (10) in a sliding manner, threaded grooves are formed in the two second sleeves (10), the two lead screws (8) are respectively in threaded connection with the threaded grooves of the second sleeves (10), mounting bearings (11) are respectively arranged at the right ends of the two first sleeves (7), driving wheels (12) are respectively rotatably connected to the inner sides of the two mounting bearings (11), the left ends of the second sleeves (10) are respectively provided with a mounting block (13), a driven wheel (14) is connected between the two mounting blocks (13), the left ends of the inner sides of the two second sleeves (10) are respectively provided with a mounting plate (15), the front surfaces of the two mounting plates (15) are respectively provided with a tensioning wheel (18), the upper and lower sides of the front surface of the supporting plate (1) are also provided with a tightening wheel (18), the outer edges of the driving wheel (12), the driven wheel (14) and the tension wheel (18) are meshed and connected with a crawler belt (19).

2. An agricultural machine variable track undercarriage according to claim 1, wherein: the diameter of the driving wheel (12) is larger than that of the driven wheel (14).

3. An agricultural machine variable track undercarriage according to claim 1, wherein: an output shaft (20) is fixedly connected between the two driving wheels (12).

4. An agricultural machine variable track undercarriage according to claim 1, wherein: and support rods (21) are respectively connected between the two mounting plates (15) and between the driven wheels (14).

5. An agricultural machine variable track undercarriage according to claim 1, wherein: the outer surface of the crawler belt (19) is provided with prismatic protrusions (22).

6. An agricultural machine variable track undercarriage according to claim 1, wherein: the lower end of the tensioning wheel (18) is connected with a telescopic rod (16), and springs (17) are sleeved outside the two telescopic rods (16).