Patent Application
20220212735
The invention belongs to the technology field of agriculture machinery equipment, in particular to a crawler driving device.
Track is a kind of traditional driving device, with history of more than 200 years since its invention. As excellent traction ability, mobility and stability, it is still a basic form of driving device. At present, the crawler driving device is not only used in agriculture tractor, but also mainly used in rice harvester, military vehicles, construction machinery, etc.
The traditional crawler driving device has the following drawbacks: the roller set is a two-row structure, with a high pressure on each roller wheel and poor stability of the overall structure; The rubber track structure is relatively simple, single-tooth structure located in the middle of the rubber track, easy to cause uneven force on the both sides, thus causing damage to the track; the roller wheels are fixed on the track bracket, where there is an obstacle on the ground, the roller wheels bump transmit the impact force received to the machine body, thus causing the machine shake and uncomfortable to driver.
The invention provides a crawler driving device, to solve these problems that mentioned in the above background technology, these problems respectively are the high pressure on roller wheel, uneven pressure on rubber track, and causes the machine body's shake.
The technical problems solved by the invention are realized by the following technical solutions:
A crawler driving device, includes the main frame, the driving wheel that rotationally set over the main frame, the idler wheels that set at the both ends of the main frame, couple of roller wheels under the main frame at intervals along the driving direction of the crawler driving device, and the track that set at the outside of the driving wheel, the idler wheels and the roller wheels. wherein, the described main frame (10) includes beam (11), V-shaped brackets (12) that linked with the both sides of the beam (11) respectively, connecting rod (13) that connected the both V-shaped brackets (12), the space that is formed by V-shaped brackets (12) is used to accommodate the driving wheel (20); Described idler wheels include the guide rods that set at the both ends of the frame body, the rotating shafts that set at the end of the guide rod, and idler wheels that mounted on the both sides of the rotating shaft. Described each roller set includes the mechanical balancer, the roller wheels that rotationally connected with the both ends of mechanical balancer, The center position of the mechanical balancer rotating connected with the bottom of the main frame body. The teeth that set on the inner wall of the track engage with the driving wheel, roller wheels enable rubber track to move.
Preferably, using pin (70) to link the middle position of the both sides of the beam (11) with the bottom of V-shaped brackets (12).
Further preferably, setting restriction plates (14) in the middle position of the both sides of the beam (11) to limit the swing angle of the V-shaped brackets (12)
Preferably, the idler wheels rotationally set at the two ends of the main frame body and thus support the track, the idler wheels include the front guide idler wheel and the rear idler wheel.
Preferably, the mechanical balancer rotationally install at the bottom of the both sides of the main frame by pin.
Further preferably, The mechanical balancer includes the plate, the upper bearing seat that assembled at the bottom of the both end of the plates, the lower bearing seat which using with the upper bearing seat together and form a through-hole between the upper and the lower bearing seat, The through-hole used for inserting the rotating shaft, and the roller wheels assembled at the both sides of the rotating shaft.
Preferably, the 3 rows teeth on the inner wall of the rubber track, respectively are the first row teeth (511) the second row teeth (512) the third row teeth (513).
Further preferably, setting some teeth that used for mud cleaning at the both side of the inner wall of rubber track
Preferably, Including the tension mechanism, described tension mechanism includes the hydro-cylinder mounted on the connecting rod (13) over the upper idler wheels, and the tension idler that rotationally linked with hydro-cylinder.
The beneficial effect of the invention are:
1. The invention is mainly applied to the ground with poor operating condition, which increasing ground contact area, not only effectively prevent machine's subsidence, but also protect the field from damage.
2. The three-row teeth track structure in the invention deliver uniformly force on track and thus prolong the rubber track's life.
3. The roller wheels, idler wheels and tensioners in the invention all adopt four-row wheels structure, lowering the pressure on the each wheel and greatly improve the overall stability of the equipment.
4. The balancing structure of the roller wheels in the invention, absorbing vibration when the crawler driving device run into the obstacles, and thus ensuring the machine's smoothly driving.
5. The track in the invention is made of rubber, and has the advantages of stable moving, low noise and economic fuel consumption.
6. The double tensioning structure in the invention take advantage of even force distribution and more reliable.
Wherein, 10—the main frame 11—beam 12—V-shaped brackets 13—connecting rod
In order to further explain the technical solutions of the invention, the following is a detailed elaboration of the invention through specific embodiments.
It should be noted that in the embodiments “both sides” is the left and right directions along the driving direction of the crawler driving device, “both ends” is the front and rear directions along the driving direction of the crawler driving device.
As shown in
As shown in
As shown in
Setting restriction plate (14) in the middle position of the both sides of beam (11) in order to limit the swing angle of the V-shaped brackets (12).
As shown in
As shown in
The side plate 22 uniformly distributed and inserted in the teeth of the rotating fluted disc 21, the rectangular notch at the bottom of the side plate 22 stuck out the center of the teeth and perpendicular to the teeth, two rotating disc 23 separately insert in the symmetrical notch at top of the side plate 22, the rotating disc 23 is perpendicular to the side plate 22 and parallel to the rotating fluted disc 21, and the center of two rotating disc is coincident, some holes uniformly set on the two rotating discs 23 and the position of holes in the two rotating disc is same, the connection bar 24 respectively inserted in the corresponding holes of the two rotating discs 23, when walking device works, the connection bar 24 drive the teeth 51 of the inner wall of track 50, thus drive track 50 to walk.
As shown in
The idler wheels in the invention is composed of the front idler wheel 301 and the rear idler wheel 302, separately assembled at the front and rear of the beam 11.
As shown in
As shown in
Setting the fourth through hole 415 at the top of the middle of the plate 411, which link with the connecting bracket 17 by pin 70.
There are 4 roller wheels 42 for each roller set in the invention.
As shown in
There are same interval space 53 during 3 rows teeth, the interval space 53 can accommodate the two middle wheels of the idler wheels 30 the roller wheels 40 and the tensioners 60
Setting some teeth 52 at the two ends of the inner wall of the rubber track 50, and distributed at same interval, the shape of tooth 52 is similar to pyramid make the mud to easily drop from the track 50 and thus achieve the effect of cleaning.
As shown in
The Implement Process of the Invention
The V-shaped bracket 12, driving wheel 20 is installed on driving axle of the machine, when the driving axle turn, the driving wheel move as well, driving wheel 20 engage with the teeth of inner wall of the rubber track, thereby drive track 50 to move, the roller set swing up and down during moving, and also supporting frame for the crawler driving device. The roller wheel at the both sides of the main frame can swing up and down with taking the rotating shaft 416 in the middle of the oscillating deck as fulcrum. when the crawler driving device run into obstacles, the four roller wheel sets at the both ends of the mechanical balancer buffers force synchronously, thus ensure smoothly drive. the idler wheels mainly play guiding role, the tension mechanism achieves tensioning adjustment between track and wheel groups under the action of the hydro-cylinder.
The above embodiments of the invention are described in detail, but the contents are only the better embodiments of the invention and should not be considered as limiting the scope of implementation of the invention, any equal changes and improvement made in accordance with the scope of the invention remain within the scope of the invention patent.
