CN213831337U - Novel power transmission system of crawler tractor - Google Patents

Abstract

The utility model discloses a novel crawler tractor power transmission system, including preceding transmission shaft, reposition of redundant personnel case, belt drive system, buncher, axle case, drive wheel and power take off. The power input end of the front transmission shaft is connected with external power, and the power output end of the front transmission shaft is connected with the flow dividing box; the shunt box is provided with an input shaft, an upper output shaft and a lower output shaft, and the upper output shaft is connected with the continuously variable transmission through a belt transmission system; the continuously variable transmission is connected with the axle box; the half shaft of the axle box is connected with the driving wheels at two sides; and a lower output shaft of the flow distribution box is connected with a power output device and transmits power to a working device hung on the tractor. The utility model discloses with the several little volume subassemblies that are connected through transmission shaft or belt of transmission system split one-tenth, reduced the transmission system and made the degree of difficulty, improved the convenience of maintenance greatly.

Description

Novel power transmission system of crawler tractor

Technical Field

The utility model relates to a tractor power transmission technical field especially relates to a novel crawler tractor power transmission system.

Background

With the increasing degree of agricultural mechanization, the tractor is used as an agricultural machine with multiple expanded purposes, the market prospect is wider and wider, the tractor for agricultural production is an agricultural machine product taking power as a main body, is suitable for paddy field and dry land operation, is matched with different agricultural implements, and can complete operations such as plowing, rotary tillage, rice raising, ditching and the like.

Tractors fall into two broad categories, track tractors and wheeled tractors. Compared with a wheel type tractor, the crawler type tractor has the advantages that the ground pressure is small, the operation in the paddy field is fast, the operation efficiency is high, the bottom layer of the paddy field is hardly damaged, and the like. With the increasing awareness of farmers on farmland protection, the crawler tractor is rapidly popularized in rice operation areas in recent years, and the demand is increasing.

But the existing crawler-type tractor transmission systems are basically provided with an integral transmission case (which is derived from a wheeled tractor), and the case has high precision requirement on parts and complex manufacturing process; the more troublesome is that the integral structure is adopted, once a transmission case of the vehicle is damaged in the using process, the whole vehicle almost needs to be disassembled in the maintenance process, and the transmission case is large in size and weighs hundreds of kilograms, so that the transmission case is difficult to disassemble by manpower in fields and on the ground, engineering machinery such as an excavator and the like is often used, the maintenance process is complex, the consumed time is long, the maintenance cost is high, and great inconvenience is caused to maintenance personnel and clients.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at fundamentally and solve the above-mentioned reality difficult problem that exists, provide a novel crawler tractor power transmission system, adopt the mode with the transmission system split, reduce the transmission system and make the degree of difficulty, improve the convenience of maintenance.

The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides a novel crawler-type tractor power transmission system, including preceding transmission shaft, reposition of redundant personnel case, belt transmission system, buncher, axle box, drive wheel and power take off, the power input end of preceding transmission shaft is connected with outside power, and preceding transmission shaft power take off end is connected with the reposition of redundant personnel case, the reposition of redundant personnel case is equipped with the input shaft, goes up the output shaft, and it is connected with buncher to go up the output shaft through belt transmission system, buncher is connected with the axle box, the semi-axis of axle box is connected with the drive wheel of both sides, the lower output shaft of reposition of redundant personnel case is connected with power take off, gives the operating means that the tractor hung with power transmission.

Compared with the prior art, the beneficial effects are that: (1) the system adopts a mechanical-hydraulic integrated mode, is derived from a power transmission system of the rice harvester, basically uses the rice harvester as parts except the flow dividing box, and has mature technology, high reliability, convenient and simple purchase; (2) compared with the integrated power transmission system of the wheeled tractor, the device is formed by combining a plurality of discrete mechanisms or parts, so that the field maintenance is convenient and the fault removal is simple. (3) The system skillfully passes through the power output device from the right lower part of the axle box and is applied to the crawler-type tractor, thereby not only meeting the characteristic of high ground clearance requirement of the crawler-type tractor, but also meeting the current situation that the ground clearance of power output shafts of agricultural machinery such as a rotary cultivator and the like forms the national standard (namely, the working devices matched with the wheeled tractor and the crawler-type tractor are completely universal). (4) Because the continuously variable transmission of the system can meet the requirement of stopping to running at a high speed, and the hydraulic friction plate type clutch (or a mechanical friction plate type clutch can be adopted) is arranged in the flow dividing box, the walking clutch and the power output clutch of the system are independent and do not interfere with each other, and the control performance of the crawler tractor is improved. (6) The axle box of the system adopts a rice harvester, and can meet the functional requirements of steering, driving braking and parking braking of the crawler tractor, thereby greatly reducing the manufacturing cost of the whole machine.

While additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a diagram of a prior art power transmission system of a track-type tractor;

fig. 2 is the structure diagram of the power transmission system of the novel crawler tractor.

Reference numerals: 101. a clutch device; 102. an integral gearbox; 103. a drive wheel; 104. an engine; 105. a power take-off shaft; 1. a front drive shaft; 2. a shunt box; 3. a belt drive system; 4. a continuously variable transmission; 5. a bridge box; 6. a drive wheel; 7. and a power output device.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The existing transmission system transmission mode is shown in fig. 1 and comprises a clutch device 101, an integral gearbox 102, a driving wheel 103 and the like. The power generated by the engine 104 is transmitted to the integral gearbox 102 through the clutch device 101, and a part of the power is transmitted to the driving wheel 103 through a gear meshing pair in the integral gearbox 102, so as to drive the traveling system; one part is transmitted to the power output shaft 105 to drive the agricultural implement. The main power transmission and the split of the whole system are mainly performed by an integrated gearbox 102, and the integrated gearbox 102 integrates a hydrostatic transmission device (some of which are not provided), a gear gearbox, a power output device and the like.

The specific implementation of the utility model is shown in fig. 2, which is a novel crawler tractor power transmission system, comprising a front transmission shaft 1, a flow dividing box 2, a belt transmission system 3, a continuously variable transmission 4, an axle box 5, a driving wheel 6 and a power output device 7; the power input end of the front transmission shaft 1 is connected with external power, and the power output end of the front transmission shaft 1 is connected with the flow dividing box 2; the flow dividing box 2 is provided with an input shaft, an upper output shaft and a lower output shaft; the upper output shaft is connected with a continuously variable transmission 4 through a belt transmission system 3, and the continuously variable transmission 4 is connected with a bridge box 5; the half shaft of the axle box 5 is connected with the driving wheels 6 at two sides, and part of power is transmitted to a walking system of the tractor; the lower output shaft of the flow dividing box 2 is connected with a power output device 7, and the other part of power is transmitted to a working device hung on the tractor.

The working principle of the flow dividing box 2 is that engine power output by a transmission shaft is divided into two parts, one part transmits the power to a belt transmission system 3 (the belt transmission system 3 comprises a belt pulley, a belt and a belt tensioning mechanism) through a spiral bevel gear, and the other part transmits the power to a power output device 7 (the power output device 7 consists of the transmission shaft and a power output box and is responsible for transmitting part of the power divided by the flow dividing box 2 to a working device dragged by a crawler tractor) through a cylindrical gear pair for speed reduction and a set of clutch device;

furthermore, the continuously variable transmission 4, the axle box 5 and the driving wheels 6 jointly form a speed reducing mechanism of the power transmission system, the stepless change of the vehicle speed from zero to the highest vehicle speed is met, and the power is transmitted to the traveling mechanisms on two sides of the vehicle.

In summary, the system (1) adopts a mechanical-hydraulic integrated mode, is derived from a power transmission system of the rice harvester, basically uses the rice harvester as parts except the shunt box, and has mature technology, high reliability, convenient and simple purchase; (2) compared with the integrated power transmission system of the wheeled tractor, the device is formed by combining a plurality of discrete mechanisms or parts, so that the field maintenance is convenient and the fault removal is simple. (3) The system skillfully passes through the power output device from the right lower part of the axle box and is applied to the crawler-type tractor, thereby not only meeting the characteristic of high ground clearance requirement of the crawler-type tractor, but also meeting the current situation that the ground clearance of power output shafts of agricultural machinery such as a rotary cultivator and the like forms the national standard (namely, the working devices matched with the wheeled tractor and the crawler-type tractor are completely universal). (4) Because the continuously variable transmission of the system can meet the requirement of stopping to running at a high speed, and the hydraulic friction plate type clutch (or a mechanical friction plate type clutch can be adopted) is arranged in the flow dividing box, the walking clutch and the power output clutch of the system are independent and do not interfere with each other, and the control performance of the crawler tractor is improved. (6) The axle box of the system adopts a rice harvester, can meet the requirements of steering, driving braking and parking braking of the crawler tractor, and greatly reduces the manufacturing cost of the whole machine.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (1)

1. The utility model provides a novel track type tractor power transmission system which characterized in that: the power output end of the front transmission shaft is connected with the shunt box; the shunt box is provided with an input shaft, an upper output shaft and a lower output shaft, and the upper output shaft is connected with the continuously variable transmission through a belt transmission system; the continuously variable transmission is connected with the axle box; the half shaft of the axle box is connected with the driving wheels at two sides; and a lower output shaft of the flow distribution box is connected with a power output device and transmits power to a working device hung on the tractor.

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