CN115380652A

CN115380652A - Traction device

Info

Publication number: CN115380652A
Application number: CN202211353370.4A
Authority: CN
Inventors: 单海发; 徐庆武; 崔小龙; 周朱峰
Original assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Current assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2022-11-25
Anticipated expiration: 2042-11-01
Also published as: CN115380652B

Abstract

The present invention provides a traction device, comprising: a transmission case housing; the first half-shaft shell is directly fixed with the transmission case shell, and is provided with a first lower pull rod mounting part and a first limiting rod mounting part; one end of the first lower pull rod is movably connected with the first lower pull rod mounting part; the gear box comprises a first limiting rod, one end of the first limiting rod is movably connected with a first limiting rod installation part, the other end of the first limiting rod is movably connected with a first lower pull rod, and the first lower pull rod is arranged between the first limiting rod and a gear box shell. According to the invention, the lower pull rod mounting part is directly integrated on the half-axle shell, so that the spatial layout is simplified, the assembly structure of the lower pull rod is more reasonable, the overall strength is obviously improved, and the requirements of users on heavy machines and tools can be met.

Description

Traction device

Technical Field

The invention relates to the technical field of vehicles, in particular to a traction device of a vehicle.

Background

In recent years, with the deepening of rural urbanization and the accelerated promotion of land circulation, the population of agricultural practices is reduced year by year, the agricultural production operation mode is developed towards the direction of scale and intensification, and the demand for a high-reliability heavy tractor capable of being matched is increased rapidly. In order to enable the tractor to be matched with a heavier composite machine, the requirement on the lifting force of the tractor is increased, and the lifting force of the tractor mainly depends on a lower pull rod mounting point and the like under the condition that the diameters of the cylinders of the oil cylinders are the same, so that the reasonable lower pull rod mounting point is important. At present, reasonable lower pull rod mounting points are generally closer to a half shaft shell of a tractor, and a lower pull rod mounting support is basically mounted on a chassis shell domestically, so that the integration degree of the whole machine is low, and the space structure is complex and the assembly is difficult. Therefore, there is a need for a highly integrated traction device that overcomes the above-mentioned deficiencies.

Disclosure of Invention

The invention aims to provide a traction device with high integration level.

According to an aspect of the present invention, there is provided a traction device comprising:

a transmission housing;

the first half-shaft shell is directly fixed with the transmission case shell and is provided with a first lower pull rod installation part and a first limiting rod installation part;

one end of the first lower pull rod is movably connected with the first lower pull rod mounting part;

the gear box comprises a first limiting rod, one end of the first limiting rod is movably connected with a first limiting rod installation part, the other end of the first limiting rod is movably connected with a first lower pull rod, and the first lower pull rod is arranged between the first limiting rod and a gear box shell.

Preferably, still include second axle housing, second lower link and second gag lever post, second axle housing and transmission case casing snap-on, the second axle housing is equipped with second lower link installation department and second gag lever post installation department, first axle housing and second axle housing mutually symmetrically set up in transmission case casing horizontal direction's both sides, the one end and the second lower link installation department swing joint of second lower link, the one end and the second gag lever post installation department swing joint of second gag lever post, the other end and the second lower link swing joint of second gag lever post, second lower link are located between second gag lever post and the transmission case casing, first lower link installation department and the first axle housing integral type set up, second lower link installation department and second axle housing integral type set up.

Preferably, first gag lever post installation department below is equipped with first connecting seat, first gag lever post and first connecting seat swing joint, second gag lever post installation department below is equipped with the second connecting seat, second gag lever post and second connecting seat swing joint.

Preferably, the lifting device and the upper pull rod movably connected with the lifting device are further included, and the two sides of the transmission case are provided with towing side plates which extend backwards from the transmission case.

Preferably, a protective cover is arranged at the rear end of the transmission case shell and fixed to the top of the traction side plate, a supporting piece is arranged at the top of the protective cover, the upper pull rod is arranged on the supporting piece, and the supporting piece provides upward supporting force for the upper pull rod.

Preferably, the lifting device further comprises a first connecting rod and a second connecting rod which are respectively located on two sides of the protective cover, the lifting device comprises a first lifting arm and a second lifting arm which are respectively located on two sides of the upper pull rod, the first connecting rod is connected with the first lifting arm and the first lower pull rod, and the second connecting rod is connected with the second lifting arm and the second lower pull rod.

Preferably, the first axle housing includes a first safety shelf mounting portion that protrudes upward, and the second axle housing includes a second safety shelf mounting portion that protrudes upward.

Preferably, the first axle housing and the second axle housing are each provided with a forwardly projecting body bracket mounting portion.

Preferably, one end of the supporting piece is fixed at the upper end of the protective cover through a bolt, the supporting piece is formed by bending a metal strip, the supporting piece comprises a concave portion formed by bending the metal strip, and the upper pull rod is arranged in the concave portion.

Preferably, the upper pull rod, the first limiting rod, the second limiting rod, the first connecting rod and the second connecting rod are all arranged to be capable of axially extending and retracting along the upper pull rod.

Compared with the prior art, the traction device provided by the invention has the following beneficial effects:

the lower pull rod mounting part is directly integrated on the half-axle shell, so that the spatial layout is simplified, the assembly structure of the lower pull rod is more reasonable, the overall strength is obviously improved, and the requirements of users on heavy machines and tools are more favorably met; the support piece of the upper pull rod is arranged on the PTO protective cover, so that the assembly is convenient, and the production and processing costs are saved.

Drawings

The invention is described in further detail below with reference to the following figures and embodiments:

FIG. 1 is a perspective view of a draft gear of the present invention;

FIG. 2 is a perspective view of the transmission housing of the present invention;

FIG. 3 is a bottom view of the transmission housing of the present invention;

FIG. 4 is a perspective view of a first axle housing of the present invention;

fig. 5 is a partially enlarged view of the supporter of the present invention.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. Moreover, in the interest of brevity and understanding, only one of the components having the same structure or function is illustrated schematically or designated in some of the drawings. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, without inventive effort, other drawings and embodiments can be derived from them.

Referring to fig. 1 and 2, the present invention discloses a traction device 100, comprising: the transmission case comprises a transmission case shell 1, a first half-shaft shell 2, a second half-shaft shell 2', a first lower pull rod 3, a second lower pull rod 3', a first limiting rod 4, a second limiting rod (not marked), a lifter device 5 and an upper pull rod 7. The first and second half shaft housings 2 and 2' are directly fixed to the left and right sides of the transmission case housing 1, respectively, and the transmission case housing 1 is directly fixed by bolts.

Referring to fig. 1 and 3, a first lower drawbar mounting part 31 is integrally provided at a bottom of the first half shaft housing 2, and a second lower drawbar mounting part 31 'is integrally provided at a bottom of the second half shaft housing 2'. The bottom of the first axle housing 2 is further provided with a first limiting rod mounting portion 21, and the first connecting seat 41 is fixed below the first limiting rod mounting portion 21 through a bolt. One end of the first limiting rod 4 is movably connected with the first connecting seat 41, and the other end is movably connected with the first lower pull rod 3.

The bottom of the second half-shaft shell 2' is also provided with a second limiting rod installation part 21', and a second connecting seat (not marked) is fixed below the second limiting rod installation part 21' through a bolt. One end of the second limiting rod is movably connected with the second connecting seat, and the other end of the second limiting rod is movably connected with the second lower pull rod 3'.

The lifter device 5 is arranged on top of the transmission housing 1 and comprises a first lifting arm 51 and a second lifting arm 52. The upper end of the first connecting rod 61 is movably connected with the first lifting arm 51, and the lower end of the first connecting rod 61 is movably connected with the first lower pull rod 3. The upper end of the second connecting rod 62 is movably connected with the second lifting arm 52, and the lower end of the second connecting rod 62 is movably connected with the second lower pull rod 3'.

The lifter device 5 drives the first lifting arm 51 and the second lifting arm 52 to rotate coaxially, the first lifting arm 51 and the second lifting arm 52 drive the first connecting rod 61 and the second connecting rod 62 to move up and down in the vertical direction, the first connecting rod 61 and the second connecting rod 62 drive the first lower pull rod 3 and the second lower pull rod 3', and the first lower pull rod 3 and the second lower pull rod 3' rotate around the first lower pull rod installation part 31 and the second lower pull rod installation part 31' respectively.

Referring to fig. 1, the left side and the right side of the transmission case housing 1 are respectively provided with a trailing side plate 11, and the trailing side plates 11 are fixed to the transmission case housing 1 by bolts. The trailing side plate 11 extends towards the rear of the transmission case shell 1, and the top of the trailing side plate 11 is provided with a protective cover 12. The towing side plate 11 is used for connecting a towing rack, and the towing rack is used for connecting a trailer matched with a user at the back. The main body of the protective cover 12 is horizontally arranged, the left side and the right side of the protective cover are bent downwards and fixed with the towing side plate 11, and the protective cover 12 is used for protecting the PTO output shaft.

The upper end of the protective cover 12 is provided with a supporting member 121, and the supporting member 121 is formed by bending a metal strip. One end of the supporting member 121 is fixed to the top of the protecting cover 12 by a bolt, and the other end is bent to form a groove portion (not labeled) with an upward opening. When the position needs to be adjusted, the supporting member 121 can be rotated to adjust the position only by loosening the nut.

The rear end of the lifter device 5 is provided with a mounting seat for mounting the upper pull rod 7, the mounting seat is provided with a plurality of groups of mounting holes arranged along the vertical direction, and the upper pull rod 7 can be connected with any group of mounting holes through a pin shaft. The upper tie bar 7 is placed in a recess of the support member 121, and the support member 121 provides an upward supporting force to the upper tie bar 7. Usually, the upper pull rod hook can be arranged on the vehicle body, and the spatial arrangement is inconvenient. The supporting part 121 is fixed at the top of the protective cover 12, so that the space is large and the assembly is convenient.

Referring to fig. 2, a first safety frame mounting part 22 protruding upwards is further disposed at the top of the first axle housing 2, a second safety frame mounting part 22' protruding upwards is disposed at the top of the second axle housing 2', and two ends of the bottom of the safety frame of the tractor are respectively fixed to the first safety frame mounting part 22 and the second safety frame mounting part 22 '. The safety frame of the tractor is used for effectively supporting the tractor when the tractor rolls over, and the safety of a driver is protected. Referring to fig. 4, the first axle housing 2 further includes a forwardly projecting body bracket mounting portion 23 for mounting a simple body bracket.

The upper pull rod 7, the first connecting rod 61, the second connecting rod 62, the first limiting rod 4 and the second limiting rod are all in threaded connection and can be stretched in the axial direction of the upper pull rod, the first connecting rod 61, the second connecting rod 62 and the second limiting rod. A lift cylinder for rotating the first lift arm 51 and the second lift arm 52 is provided inside the lifter device 5.

According to the traction device 100, the mounting sites of the two lower pull rods are respectively integrated on the half-axle housings on the two sides of the transmission case housing, so that the layout space and cost of the lower pull rod mounting bracket can be saved after the integrated layout, the lifting and hanging layout of the whole machine is simpler and more compact, and the whole strength is firmer and more reliable under the condition of unchanged use function.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. A draft gear, comprising:

a transmission housing;

the one end and the first gag lever post installation department swing joint of first gag lever post, the other end and the first lower link swing joint of first gag lever post, first lower link are located between first gag lever post and the transmission case casing.

2. The traction device as claimed in claim 1, further comprising a second half shaft housing, a second lower link, and a second limit lever, wherein the second half shaft housing and the transmission case housing are directly fixed, the second half shaft housing is provided with a second lower link mounting part and a second limit lever mounting part, the first half shaft housing and the second half shaft housing are symmetrically arranged on both sides of the transmission case housing in the horizontal direction, one end of the second lower link is movably connected with the second lower link mounting part, one end of the second limit lever is movably connected with the second limit lever mounting part, the other end of the second limit lever is movably connected with the second lower link, the second lower link is arranged between the second limit lever and the transmission case housing, the first lower link mounting part and the first half shaft housing are integrally arranged, and the second lower link mounting part and the second half shaft housing are integrally arranged.

3. The draft gear according to claim 2, wherein a first connecting seat is provided below the first stop lever mounting portion, the first stop lever is movably connected with the first connecting seat, a second connecting seat is provided below the second stop lever mounting portion, and the second stop lever is movably connected with the second connecting seat.

4. The draft gear according to claim 3, further comprising a lifter means and an upper drawbar movably connected to the lifter means, said transmission housing being flanked by trailing side plates extending rearwardly from the transmission housing.

5. The draft gear according to claim 4, wherein a shield is provided at the rear end of the transmission housing, said shield being secured to the top of the trailing side plate, said shield having a support member at the top thereof, said upper drawbar resting on the support member, the support member providing upward support to the upper drawbar.

6. The hitch apparatus of claim 5, further comprising first and second links respectively positioned on opposite sides of the hood, the lifter device including first and second lift arms respectively positioned on opposite sides of the upper link, the first link connecting the first lift arm to the first lower link, and the second link connecting the second lift arm to the second lower link.

7. The hitch apparatus of claim 2, wherein the first axle housing includes a first safety bracket mounting portion that projects upwardly, and the second axle housing includes a second safety bracket mounting portion that projects upwardly.

8. The draft gear according to claim 7, wherein said first axle housing and said second axle housing are each provided with a forwardly projecting body bracket mounting portion.

9. The draft gear according to claim 5, wherein the support member is fixed at one end thereof to the upper end of the draft gear by a bolt, the support member is formed by bending a metal strip, the support member includes a recess formed by bending the metal strip, and the upper tie bar is disposed in the recess.

10. The draft gear according to claim 6, wherein the upper link, the first limit post, the second limit post, the first link and the second link are each configured to be extendable and retractable in an axial direction thereof.