CN217074036U - Semi-caterpillar tractor - Google Patents
Semi-caterpillar tractor Download PDFInfo
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- CN217074036U CN217074036U CN202123408307.XU CN202123408307U CN217074036U CN 217074036 U CN217074036 U CN 217074036U CN 202123408307 U CN202123408307 U CN 202123408307U CN 217074036 U CN217074036 U CN 217074036U
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Abstract
The utility model relates to a semi-caterpillar tractor belongs to agricultural machine technical field, including driving system assembly, transmission system assembly, traveling system assembly, equipment and hydraulic system assembly, covering assembly and car ladder assembly to wheeled tractor is the basis, and the front wheel is unchangeable, and the rear wheel is crawler travel unit, through adjustment front drive gear and central transmission gear speed ratio, and drive speed matches around realizing satisfies the complete machine speed of a motor vehicle requirement. Its crawler unit is equipped with tensioning buffer and stop device, can effectively overcome the tractor skid in complex environments such as mountain region, paddy field, sink in the wheel, turn on one's side the scheduling problem, guarantees to advance steadily, effectively exerts traction power.
Description
Technical Field
The utility model belongs to the technical field of agricultural machine, concretely relates to semi-caterpillar tractor.
Background
In rice planting areas in China, problems of slipping, wheel sinking, overturning and the like often occur when a wheeled tractor operates, so that the power of the tractor is difficult to effectively utilize, and meanwhile, the soil structure is seriously damaged. Particularly, in areas with large ground slopes, the climbing capability of the wheeled tractor is limited, and the stability and the traction power of the wheeled tractor are influenced by self walking or agricultural tool hanging operation. Therefore, the semi-track type tractor is increasingly widely used with the advantages of stable traveling and high working efficiency.
The semi-caterpillar tractor is a tractor with caterpillar as a driving device and front wheels for steering. The common semi-caterpillar tractor is based on a wheeled tractor, the front wheels are unchanged, and the rear wheels are caterpillar running devices. The wheel type front wheel has the characteristics of convenience and flexibility in turning, the crawler type rear wheel has smaller ground pressure and larger traction force, and has the advantages of difficulty in slipping, good stability, high traction power and the like in complex environment operation such as mountainous regions, paddy fields and the like. No matter be for wheeled tractor or traditional track tractor, semi-track tractor all has stronger comprehensive operation ability, and application scope is wider to better security and adaptability have.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a semi-caterpillar tractor, which can effectively exert tractor traction power in complex environments such as mountainous regions and paddy fields.
The invention adopts the following specific scheme:
a semi-caterpillar tractor comprises a power system assembly, a transmission system assembly, a traveling system assembly, a working device, a hydraulic system assembly, a covering part assembly and a vehicle ladder assembly;
the walking system assembly comprises a front driving wheel assembly and a crawler device assembly; the transmission system assembly comprises a front driving gear and a central transmission gear, and the front driving speed and the rear driving speed are matched by adjusting and increasing the speed ratio of the front driving gear and the central transmission gear, so that the conversion of a crawler device in the walking system assembly is realized;
the crawler device assembly is connected to the transmission system assembly through bolts and comprises a driving wheel assembly, a thrust wheel assembly, a tensioning buffer device, a frame assembly and a crawler;
the driving wheel assembly is positioned at the upper part of the crawler device assembly and is connected with a rear shaft of the tractor through a bolt;
the thrust wheel assembly comprises three thrust wheels which are fixedly and uniformly distributed on the lower side of the frame assembly through bolts;
the tensioning wheel assembly comprises two tensioning wheels, the two tensioning wheels are respectively arranged at two ends of the frame assembly and form a triangular structure with the driving wheel assembly;
the tensioning buffer device is welded and fixed with the front end of the frame assembly and is connected with the tensioning wheel assembly through a bolt;
the frame assembly comprises a welding frame and a limiting device; the welding frame is a section steel welding part, is positioned below the driving wheel assembly and is connected with all parts of the crawler belt device; the limiting device is installed on the welding frame through bolts and is connected with the transmission system assembly in a mode of fixing the pressing plate and the long bolts;
the track wraps up in the outside of drive wheel assembly, thrust wheel assembly and take-up pulley assembly, is the triangle.
As a further optimization of the scheme, the driving wheel assembly comprises a driving wheel connecting radial plate, a driving wheel rim and a driving wheel pin, the driving wheel assembly is connected with a rear shaft of the transmission system assembly through the driving wheel connecting radial plate, the driving wheel rim is fixedly connected onto the driving wheel connecting radial plate through a bolt, the driving wheel pin is inserted into a pin hole of the driving wheel rim, is distributed on the circumference of the driving wheel assembly and is meshed with the inner teeth of the crawler, and the crawler is driven to run by the pitch teeth.
As a further optimization of the above scheme, a central plane of the tensioning buffer device is coincident with a central plane of a crossbeam of the welded frame; the tensioning buffer device comprises a tensioning spring, and the axis of the tensioning spring is the same as the resultant force direction of the crawler.
As a further optimization of the above scheme, the limiting device is a pin shaft connecting structure with swinging and limiting functions, and the swinging center of the limiting device is not coaxial with the center of the driving wheel assembly.
As a further optimization of the scheme, the track is a coreless iron rubber track, and the driving mode is a pitch-tooth driving mode.
The utility model adopts the above technical scheme can reach following beneficial effect afterwards:
the utility model adopts the crawler attachment to replace the rear driving wheel of the wheel tractor, and the rear shaft of the tractor directly drives the crawler attachment to work, the whole structure is reasonable in arrangement, safe and reliable, and the working efficiency is high; the transmission ratio is adjusted to realize the matching of front and rear driving speeds and meet the requirement of the speed of the whole machine; the crawler device has small ground pressure and good driving smoothness, meets the requirements of most paddy field environments, and can carry out protective cultivation in hills, grasslands and other environments; the frame is formed by welding profile steels and has the characteristics of light weight and high strength; the tensioning buffer device and the limiting device can effectively overcome the problems of skidding, wheel sinking, side turning and the like of the tractor in complex environments such as mountainous regions, paddy fields and the like, ensure stable running and effectively exert traction power; the parts have good universality, the cost of the whole machine is increased a little, the price is substantial, and the maintenance cost is low.
The utility model provides a semi-caterpillar tractor which can effectively exert the traction power of the tractor in complex environments such as mountainous regions, paddy fields and the like. The front wheels are unchanged and the rear wheels are crawler traveling devices on the basis of a wheel tractor, and the front driving speed and the rear driving speed are matched by adjusting the speed ratio of the front driving gear and the central driving gear, so that the speed requirement of the whole tractor is met. Its crawler unit is equipped with tensioning buffer and stop device, can effectively overcome the tractor skid in complex environments such as mountain region, paddy field, sink in the wheel, turn on one's side the scheduling problem, guarantees to advance steadily, effectively exerts traction power.
Drawings
Fig. 1 is a schematic side view of a semi-crawler tractor according to the present invention;
fig. 2 is a schematic view of the internal top view structure of the semi-crawler tractor according to the present invention;
FIG. 3 is a schematic view of a transmission line of a semi-track tractor according to the present invention;
FIG. 4 is a schematic structural view of a left crawler assembly of the semi-crawler tractor according to the present invention;
FIG. 5 is a schematic structural view of a driving wheel assembly of a semi-crawler tractor according to the present invention;
FIG. 6 is a schematic view of a left side frame assembly of the semi-crawler tractor according to the present invention;
in the figure: A. a power system assembly; B. a transmission system assembly; b1, a front drive gear; b2, a central transmission gear; C. a traveling system assembly; c1, a front driving wheel assembly; c2, a crawler assembly; D. the working device and the hydraulic system assembly; E. a cover assembly; F. a vehicle ladder assembly; 1. a drive wheel assembly; 2. a thrust wheel assembly; 3. a tension pulley assembly; 4. a tensioning buffer device; 5. a frame assembly; 6. a crawler belt; 1.1, the driving wheel is connected with a wheel disk; 1.2, driving wheel rims; 1.3, driving wheel pins; 4.1, welding a frame; 4.2, a limiting device.
Detailed Description
A semi-caterpillar tractor comprises a power system assembly A, a transmission system assembly B, a traveling system assembly C, a working device and hydraulic system assembly D, a covering part assembly E and a vehicle ladder assembly F.
The power system assembly A is positioned at the front part of the whole machine, and the structure and the installation of the power system assembly A are the same as those of a wheeled tractor.
The transmission system assembly B is used as the foundation of the whole machine, other parts are directly or indirectly arranged on the transmission system assembly B, and the front and rear driving speed matching is realized by adjusting the speed ratio of the front driving gear B1 and the central driving gear B2 on the premise of low cost and less change, so that the speed requirement of the whole machine is met.
The walking system assembly C is positioned at the lower part of the whole machine, is symmetrically arranged at the left side and the right side of the tractor and comprises a front driving wheel assembly C1 and a crawler device assembly C2, and when the walking system assembly C works, a part of power provided by the power system assembly A is respectively transmitted to the front driving wheel assembly C1 at the left side and the right side and the crawler device assembly C2 through the transmission system assembly B, so that the walking function of front wheel rear crawler type driving is completed;
the structure and installation of the front driving wheel assembly C1 are the same as those of a wheel tractor, and the crawler assembly C2 is connected to the transmission system assembly B through bolts and comprises: the device comprises a driving wheel assembly 1, a thrust wheel assembly 2, a tensioning wheel assembly 3, a tensioning buffer device 4, a frame assembly 5 and a crawler 6;
the driving wheel assembly 1 is positioned at the upper part of the crawler device assembly C2 and is connected with a rear shaft of the tractor through a bolt;
the track roller assembly 2 comprises three track rollers which are connected below the frame assembly 5 through bolts and are used for providing support for the crawler assembly C2;
the tensioning wheel assembly 3 comprises two tensioning wheels which are respectively arranged at two ends of the frame assembly 5, and form a triangular arrangement together with the driving wheel assembly 1 to realize a guiding function;
the tensioning buffer device 4 is welded and fixed with the front end of the frame assembly 5, and is connected with the tensioning wheel assembly 3 through a bolt, so that the stress condition of the tensioning wheel can be relieved when stones and the like are clamped into the track to cause overload of walking parts by adjusting the tightness of the track, the rubber track is properly tensioned, safe and reliable under different road surfaces and working conditions, and the conditions of slippage, breakage, loosening and the like of the track are prevented;
the frame assembly 5 is positioned below the driving wheel assembly 1 and comprises a welding frame 4.1 and a limiting device 4.2, the welding frame 4.1 is a section steel welding piece, adopts a double-circular-tube connecting structure, is light in weight and high in strength, is a structural foundation of a crawler belt device assembly C2, other parts are directly or indirectly arranged on the welding frame, and the limiting device 4.2 is connected to the upper side of the welding frame 4.1 through a bolt, so that the overturning of the half crawler belt walking device caused by the change of the wheel inclination angle in a complex environment can be effectively avoided, and the stability of a vehicle body in the advancing process is realized;
the crawler belt 6 is wrapped on the outer side of each wheel and is triangular.
The working device and the hydraulic system assembly D are positioned at the rear part of the whole machine, and the structure and the installation are the same as those of a wheel type tractor.
The covering part assembly E is fixedly arranged above the power system assembly A and the transmission system assembly B, and the structure and the installation are the same as those of a wheel type tractor.
The vehicle ladder assembly F is fixed on two sides of the whole machine, below the covering part assembly E and in front of the crawler device assembly C2 through bolts, is of an inclined structure, is profiled to the outline of a crawler structure, and is more reasonable in structure and higher in safety.
As optimization, the driving wheel assembly 1 is of a double-semicircle connection type, is convenient to mount and comprises a driving wheel connecting radial plate 1.1, a driving wheel flange 1.2 and a driving wheel pin 1.3, wherein the driving wheel flange 1.2 is fixedly connected to the driving wheel connecting radial plate 1.1 through a bolt, and the driving wheel pin 1.3 is inserted into a pin hole of the driving wheel flange 1.2, so that the structure is convenient to mount and easy to dismount;
as optimization, the central plane of the tensioning buffer device 4 is superposed with the central plane of a crossbeam of the welding frame 4.1, the resultant force direction of the spring axis is the same as that of the crawler 6, and the spring axis does not bear bending moment, so that the impact force is reduced, and the reliability is improved;
as optimization, the limiting device 4.2 is a pin shaft connecting structure, has the functions of swinging and limiting, and improves the stability of the whole machine because the swinging center of the limiting device is not coaxial with the center of the driving wheel assembly 1;
as optimization, the caterpillar 6 is a coreless iron rubber caterpillar, and the driving mode is a pitch tooth driving mode, so that the running speed can be increased, the noise can be reduced, and the abrasion to a wheel train can be reduced.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention.
As shown in fig. 1 and 2, the semi-crawler tractor comprises a power system assembly a, a transmission system assembly B, a walking system assembly C, a working device and hydraulic system assembly D, a covering part assembly E and a vehicle ladder assembly F, wherein the walking system assembly C comprises a front driving wheel assembly C1 and a crawler device assembly C2. The structure and installation of the power system assembly A, the front driving wheel assembly C1 in the traveling system assembly, the working device and hydraulic system assembly D and the covering part assembly E are the same as those of a wheel tractor. The vehicle ladder assembly F is fixed below the covering piece assemblies E on the two sides of the whole machine and in front of the crawler device assembly C2 through bolts and is of an inclined structure of a profile modeling crawler structure.
As shown in the transmission path diagram of fig. 3, the transmission system assembly B adjusts the speed ratio of the front drive gear B1 and the central drive gear B2 based on the transmission scheme of the wheeled tractor, so that the front and rear drive speeds are matched, and the conversion of the crawler device is realized.
The crawler assembly C2 of the traveling system assembly C replaces the rear driving wheel of the wheeled tractor, as shown in fig. 4, and comprises: the device comprises a driving wheel assembly 1, a thrust wheel assembly 2, a tensioning wheel assembly 3, a tensioning buffer device 4, a frame assembly 5 and a crawler 6, wherein the thrust wheel assembly 2, the tensioning wheel assembly 3, the tensioning buffer device 4, the frame assembly 5 and the crawler 6 are arranged below the driving wheel 1 to form a triangular arrangement of a traveling system. The driving wheel 1 is connected with the rear shaft of the transmission system assembly B and is directly driven by the rear shaft to further drive the crawler 6, and the advancing operation of the crawler device assembly C2 is completed under the combined action of the thrust wheel assembly 2, the tensioning wheel assembly 3 and the frame assembly 5.
As shown in fig. 5, the driving wheel assembly 1 includes a driving wheel connecting web 1.1, a driving wheel rim 1.2, and a driving wheel pin 1.3, the driving wheel assembly 1 is connected with the rear axle of the transmission system assembly B through the driving wheel connecting web 1.1, the driving wheel rim 1.2 is fixed to the driving wheel connecting web 1.1 through bolt connection, the driving wheel pin 1.3 is inserted into the pin hole of the driving wheel rim 1.2, distributed on the circumference of the driving wheel assembly 1, engaged with the inner teeth of the caterpillar track 6, and the caterpillar track 6 is driven to operate by the pitch teeth; three thrust wheels of the thrust wheel assembly 2 are uniformly distributed on the lower side of the frame assembly 5 in a bolt fixing mode respectively and are used for supporting the whole device; the tensioning wheel assembly 3 comprises two tensioning wheels which are respectively arranged at two ends of the frame assembly 5, and the wheel rim gap passes through the inner teeth of the crawler 6 so as to keep the movement track of the crawler; tensioning buffer 4 links firmly with take-up pulley assembly 3, and tensioning spring axis is the same with 6 directions that combine force of track, makes this wheel can remove along tensioning buffer 4's axis, adjusts track tensioning force according to the different conditions when the tractor marchs to guarantee suitable rate of tension and shock-absorbing capacity, guarantee stable meshing between each wheel and the track, reduce the impact force to other parts simultaneously.
As shown in fig. 6, the frame assembly 5 includes a welding frame 4.1 and a limiting device 4.2, the welding frame 4.1 is a section steel welding piece and is located below the driving wheel assembly 1, each part of the crawler device is connected, the limiting device 4.2 is installed on the welding frame 4.1 through bolts and is connected with a transmission system assembly B through a pressing plate and a long bolt fixing mode, the welding frame has the functions of swinging and limiting, in the advancing process of a tractor, the smoothness of the whole machine can be improved through swinging, and the overturning preventing effect can be achieved through the rotation of the limiting half-crawler body.
It should be noted that the above-mentioned embodiments should be considered illustrative, rather than limiting, the scope of the invention, which is defined by the appended claims. It will be apparent to those skilled in the art that certain modifications and adaptations of the invention that are not essential to the invention can be made without departing from the spirit and scope of the invention.
Claims (5)
1. A semi-caterpillar tractor comprises a power system assembly (A), a transmission system assembly (B), a walking system assembly (C), a working device and hydraulic system assembly (D), a covering part assembly (E) and a vehicle ladder assembly (F); the method is characterized in that:
the walking system assembly (C) comprises a front driving wheel assembly (C1) and a crawler device assembly (C2); the transmission system assembly (B) comprises a front driving gear (B1) and a central driving gear (B2);
the crawler device assembly (C2) is connected to the transmission system assembly (B) through bolts and comprises a driving wheel assembly (1), a thrust wheel assembly (2), a tensioning wheel assembly (3), a tensioning buffer device (4), a frame assembly (5) and a crawler (6);
the driving wheel assembly (1) is positioned at the upper part of the crawler assembly (C2) and is connected with a rear shaft of the tractor through a bolt;
the thrust wheel assembly (2) comprises three thrust wheels, and the three thrust wheels are respectively fixed on the lower side of the frame assembly (5) through bolts;
the tensioning wheel assembly (3) comprises two tensioning wheels, the two tensioning wheels are respectively arranged at two ends of the frame assembly (5) and form a triangular structure with the driving wheel assembly (1);
the tensioning buffer device (4) is welded and fixed with the front end of the frame assembly (5) and is connected with the tensioning wheel assembly (3) through a bolt;
the frame assembly (5) comprises a welding frame (4.1) and a limiting device (4.2); the welding frame (4.1) is a section steel welding part, is positioned below the driving wheel assembly (1) and is connected with all parts of the crawler belt device; the limiting device (4.2) is installed on the welding frame (4.1) through bolts and is connected with the transmission system assembly (B) in a mode of fixing the pressing plate and the long bolt;
the track (6) wraps the outer sides of the driving wheel assembly (1), the thrust wheel assembly (2) and the tensioning wheel assembly (3) and is in a triangular shape.
2. The half-track tractor as claimed in claim 1, wherein: drive wheel assembly (1) connects radials (1.1) including the drive wheel, drive wheel rim (1.2) and drive wheel round pin (1.3), drive wheel assembly (1) is connected radials (1.1) and is linked to each other with transmission system assembly (B) rear axle through the drive wheel, drive wheel rim (1.2) are fixed on drive wheel connection radials (1.1) through bolted connection, drive wheel round pin (1.3) are pegged graft in the pinhole of drive wheel rim (1.2), distribute in the circumference of drive wheel assembly (1), with the internal tooth toothing of track (6).
3. The half-track tractor as claimed in claim 1, wherein: the central plane of the tensioning buffer device (4) is superposed with the central plane of a crossbeam of the welding frame (4.1); the tensioning buffer device (4) comprises a tensioning spring, and the axis of the tensioning spring is the same as the resultant force direction of the crawler belt (6).
4. The half-track tractor as claimed in claim 1, wherein: the limiting device (4.2) is a pin shaft connecting structure with swinging and limiting functions, and the swinging center of the pin shaft connecting structure is not coaxial with the center of the driving wheel assembly (1).
5. The half-track tractor as claimed in claim 1, wherein: the track (6) is a coreless rubber track, and the driving mode is pitch-tooth driving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123408307.XU CN217074036U (en) | 2021-12-31 | 2021-12-31 | Semi-caterpillar tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123408307.XU CN217074036U (en) | 2021-12-31 | 2021-12-31 | Semi-caterpillar tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217074036U true CN217074036U (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123408307.XU Active CN217074036U (en) | 2021-12-31 | 2021-12-31 | Semi-caterpillar tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217074036U (en) |
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2021
- 2021-12-31 CN CN202123408307.XU patent/CN217074036U/en active Active
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