CN216443692U - Telescopic crawler chassis of small tractor - Google Patents
Telescopic crawler chassis of small tractor Download PDFInfo
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- CN216443692U CN216443692U CN202123134572.3U CN202123134572U CN216443692U CN 216443692 U CN216443692 U CN 216443692U CN 202123134572 U CN202123134572 U CN 202123134572U CN 216443692 U CN216443692 U CN 216443692U
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- walking beam
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Abstract
The utility model discloses a telescopic crawler chassis of a small tractor, which comprises a main frame, a left walking beam and a right walking beam which are arranged on two sides of the main frame, wherein the upper end of the main frame is provided with a hydraulic telescopic mechanism and an electric telescopic mechanism. The hydraulic telescopic mechanism and the electric telescopic mechanism can drive the left walking beam and the right walking beam to move oppositely or back to back through the hydraulic telescopic mechanism and the electric telescopic mechanism, so that the two crawler belts can walk on roads with different widths as required, when the hydraulic telescopic mechanism and the electric telescopic mechanism have a fault, the connection relation between the hydraulic telescopic mechanism and the left walking beam and the connection relation between the hydraulic telescopic mechanism and the electric telescopic mechanism and the right walking beam can be removed, the normal telescopic function is not influenced, and the fault tolerance rate is improved.
Description
Technical Field
The utility model relates to the technical field of agricultural machinery, in particular to a telescopic crawler chassis of a small tractor.
Background
The small tractor is generally equipped with a crawler chassis so as to move under the bad walking condition, most of the existing crawler chassis adopts a fixed installation type structure, namely left and right walking crawler frames are respectively welded on two sides of a main frame, and in order to enable the small tractor installed on the chassis to run more stably, the distance between the left and right walking crawler frames is larger, but the small tractor cannot pass through the narrow area, so that the small tractor has use limitation.
To this end, we propose a retractable crawler chassis for small tractors to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The present invention is intended to provide a retractable crawler chassis for a small tractor to solve the problems set forth in the background art.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a telescopic crawler chassis of a small tractor comprises a main frame, a left walking beam and a right walking beam which are arranged on two sides of the main frame, wherein a hydraulic telescopic mechanism and an electric telescopic mechanism are arranged at the upper end of the main frame.
Preferably, the hydraulic telescopic mechanism comprises a double-end oil cylinder fixedly arranged at the upper end of the main frame, two telescopic ends of the double-end oil cylinder are fixedly connected with the left walking beam and the right walking beam respectively, and the double-end oil cylinder is connected with a hydraulic system box.
Preferably, the lower end of the main frame is fixedly connected with a plurality of bottom oil cylinders, the telescopic end of each bottom oil cylinder is fixedly connected with the main frame, the lower end of each bottom oil cylinder is fixedly connected with a backing plate, and each bottom oil cylinder is connected with a hydraulic system box.
Preferably, a plurality of bottom oil cylinders are distributed in a rectangular shape.
Preferably, electronic telescopic machanism is including the fixed case that sets up in main frame upper end, the both ends of fixed case all run through there is the slide bar, two the one end that the slide bar was kept away from each other respectively with left walking beam, right walking beam fixed connection, two the equal integrated into one piece of one end that the slide bar is close to each other has a limiting plate, limiting plate and fixed case sliding connection, the inner wall central authorities fixed mounting of fixed case has a biaxial motor, two the equal fixedly connected with threaded rod of two outputs of biaxial motor, two the one end that the threaded rod was kept away from each other respectively with the slide bar threaded connection who corresponds one side, the fixed diesel generator who is connected with biaxial motor that is provided with in one side of main frame.
Preferably, the section of the fixing box is a rectangular frame.
Preferably, the hydraulic system box and the diesel generator are symmetrically distributed on two sides of the main frame.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model can simultaneously drive the left walking beam and the right walking beam to move oppositely or back to back through the hydraulic telescopic mechanism and the electric telescopic mechanism, and the two crawler belts can walk on roads with different widths as required by taking the electric telescopic mechanism as a reference, when the hydraulic telescopic mechanism and the electric telescopic mechanism have a fault, the connection relation between the hydraulic telescopic mechanism and the electric telescopic mechanism can be released, the normal telescopic function is not influenced, and the fault tolerance rate is improved.
2. Before the position of the left walking beam and the right walking beam is adjusted, the plurality of bottom oil cylinders extend and the base plate is in contact with the ground, so that the main frame and the small tractor fixedly arranged at the upper end of the main frame are supported, and the friction loss is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a top view of a telescopic crawler chassis of a small tractor according to the present invention;
fig. 2 is a schematic structural diagram of a joint between a main frame and a bottom oil cylinder of a telescopic crawler chassis of a small tractor according to the utility model.
In the figure: the system comprises a main frame 1, a left walking beam 2, a right walking beam 3, a double-head oil cylinder 4, a bottom oil cylinder 5, a hydraulic system box 6, a fixed box 7, a sliding rod 8, a limiting plate 9, a double-shaft motor 10, a threaded rod 11 and a diesel generator 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, a telescopic caterpillar chassis of a small tractor comprises a main frame 1, and a left walking beam 2 and a right walking beam 3 which are arranged on two sides of the main frame 1, wherein the upper end of the main frame 1 is provided with a hydraulic telescopic mechanism and an electric telescopic mechanism.
The basic concept of the utility model is that the left walking beam 2 and the right walking beam 3 can be driven to move oppositely or back to back by the hydraulic telescopic mechanism and the electric telescopic mechanism, and the two crawler belts can walk on roads with different widths according to requirements based on the electric telescopic mechanism, when the hydraulic telescopic mechanism and the electric telescopic mechanism have a fault, the connection relation between the hydraulic telescopic mechanism and the left walking beam 2 and the connection relation between the hydraulic telescopic mechanism and the electric telescopic mechanism and the right walking beam 3 can be released, the normal telescopic function is not influenced, and the fault tolerance rate is improved.
In order to avoid friction loss caused by contact with the ground, the following steps are additionally provided: the lower extreme fixedly connected with of main frame 1 a plurality of bottom hydro-cylinders 5, the flexible end of each bottom hydro-cylinder 5 all with main frame 1 fixed connection, a plurality of bottom hydro-cylinders 5 are the rectangle and distribute, the gravity of the small tractor of even load, the lower extreme fixedly connected with backing plate of each bottom hydro-cylinder 5, the increase with the area of contact on ground, improve stability, each bottom hydro-cylinder 5 all is connected with hydraulic system case 6.
Before the left traveling beam 2 and the right traveling beam 3 are positionally adjusted, the plurality of bottom cylinders 5 are extended and the pad plates are brought into contact with the ground, so that the main frame 1 and the small tractor fixedly disposed at the upper end of the main frame 1 are supported and frictional loss is reduced.
Specifically, hydraulic telescoping mechanism is including fixed double-end hydro-cylinder 4 that sets up in main frame 1 upper end, and two flexible ends of double-end hydro-cylinder 4 respectively with left walking beam 2, 3 fixed connection of right walking beam, double-end hydro-cylinder 4 is connected with hydraulic system case 6, and double-end hydro-cylinder 4 and hydraulic system case 6 of here are not simple to be connected, but the connection in the control to contain and use pipeline, valve etc. nevertheless, it belongs to prior art, does not describe here any more.
When the distance between the left walking beam 2 and the right walking beam 3 needs to be increased or reduced, the two telescopic ends of the double-head oil cylinder 4 are controlled to stretch through the hydraulic system box 6 until the distance between the two telescopic ends reaches the use requirement.
Specifically, the electric telescopic mechanism comprises a fixed box 7 fixedly arranged at the upper end of a main frame 1, the cross section of the fixed box 7 is a rectangular frame, a limit plate 9 is limited in a sliding manner, sliding rods 8 penetrate through two ends of the fixed box 7, one ends of the two sliding rods 8 far away from each other are fixedly connected with a left walking beam 2 and a right walking beam 3 respectively, one ends of the two sliding rods 8 close to each other are integrally formed with a limit plate 9, the limit plate 9 is connected with the fixed box 7 in a sliding manner, a double-shaft motor 10 is fixedly arranged in the center of the inner wall of the fixed box 7, two output ends of the double-shaft motor 10 are fixedly connected with threaded rods 11, one ends of the two threaded rods 11 far away from each other are respectively in threaded connection with the sliding rods 8 on the corresponding side, the rotation of the threaded rods 11 is converted into the axial displacement of the sliding rods 8, a diesel generator 12 connected with the double-shaft motor 10 is fixedly arranged on one side of the main frame 1, the principle that the diesel generator 12 supplies power to the dual-shaft motor 10 and the diesel generator 12 supplies power to the motor belongs to the prior art and is not described herein in detail.
When the distance between the left walking beam 2 and the right walking beam 3 needs to be increased or decreased, the double-shaft motor 10 drives the threaded rod 11 to drive the two sliding rods 8 to slide oppositely or back to back, and then drives the left walking beam 2 and the right walking beam 3 to move oppositely or back to back until the distance between the left walking beam and the right walking beam reaches the use requirement.
In order to balance the main frame 1 gravity, therefore: the hydraulic system box 6 and the diesel generator 12 are symmetrically distributed on two sides of the main frame 1.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. The utility model provides a scalable track chassis of small tractor which characterized in that: the hydraulic telescopic mechanism comprises a main frame (1), and a left walking beam (2) and a right walking beam (3) which are arranged on two sides of the main frame (1), wherein a hydraulic telescopic mechanism and an electric telescopic mechanism are arranged at the upper end of the main frame (1).
2. The retractable crawler chassis of a small tractor according to claim 1, wherein: the hydraulic telescopic mechanism comprises a double-end oil cylinder (4) fixedly arranged at the upper end of a main frame (1), two telescopic ends of the double-end oil cylinder (4) are fixedly connected with a left walking beam (2) and a right walking beam (3) respectively, and the double-end oil cylinder (4) is connected with a hydraulic system box (6).
3. The retractable crawler chassis of a small tractor according to claim 1, wherein: the lower end of the main frame (1) is fixedly connected with a plurality of bottom oil cylinders (5), the telescopic end of each bottom oil cylinder (5) is fixedly connected with the main frame (1), the lower end of each bottom oil cylinder (5) is fixedly connected with a backing plate, and each bottom oil cylinder (5) is connected with a hydraulic system box (6).
4. A small tractor telescopic track chassis according to claim 3, characterised in that: the bottom oil cylinders (5) are distributed in a rectangular shape.
5. The retractable crawler chassis of a small tractor according to claim 1, wherein: the electric telescopic mechanism comprises a fixed box (7) fixedly arranged at the upper end of the main frame (1), sliding rods (8) penetrate through two ends of the fixed box (7), one ends of the two sliding rods (8) far away from each other are fixedly connected with the left walking beam (2) and the right walking beam (3) respectively, limiting plates (9) are integrally formed at one ends of the two sliding rods (8) close to each other, the limiting plate (9) is connected with the fixed box (7) in a sliding way, the center of the inner wall of the fixed box (7) is fixedly provided with a double-shaft motor (10), two output ends of the double-shaft motor (10) are fixedly connected with threaded rods (11), one ends of the two threaded rods (11) which are far away from each other are respectively in threaded connection with the sliding rods (8) on the corresponding sides, and a diesel generator (12) connected with the double-shaft motor (10) is fixedly arranged on one side of the main frame (1).
6. The retractable crawler chassis of a small tractor according to claim 5, wherein: the section of the fixed box (7) is a rectangular frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123134572.3U CN216443692U (en) | 2021-12-14 | 2021-12-14 | Telescopic crawler chassis of small tractor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123134572.3U CN216443692U (en) | 2021-12-14 | 2021-12-14 | Telescopic crawler chassis of small tractor |
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| Publication Number | Publication Date |
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| CN216443692U true CN216443692U (en) | 2022-05-06 |
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| CN202123134572.3U Active CN216443692U (en) | 2021-12-14 | 2021-12-14 | Telescopic crawler chassis of small tractor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116135772A (en) * | 2023-04-20 | 2023-05-19 | 杭州尚研机械制造有限公司 | Large crawler-type telescopic crane chassis and processing method thereof |
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2021
- 2021-12-14 CN CN202123134572.3U patent/CN216443692U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116135772A (en) * | 2023-04-20 | 2023-05-19 | 杭州尚研机械制造有限公司 | Large crawler-type telescopic crane chassis and processing method thereof |
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