CN115380652B

CN115380652B - Traction device

Info

Publication number: CN115380652B
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: 2023-06-27
Anticipated expiration: 2042-11-01
Also published as: CN115380652A

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 limit rod mounting part; one end of the first lower pull rod is movably connected with the first lower pull rod mounting part; the first limiting rod is characterized in that one end of the first limiting rod is movably connected with the first limiting rod installation part, the other end of the first limiting rod is movably connected with the first pull-down rod, and the first pull-down rod is arranged between the first limiting rod and the transmission case shell. According to the invention, the lower pull rod mounting part is directly integrated on the half shaft shell, so that the space layout is simplified, the assembly structure of the lower pull rod is more reasonable, the overall strength is obviously improved, and the requirement of a user on heavy equipment is 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 deep innovation of rural town and the acceleration of land circulation, the population of agricultural practitioners is reduced year by year, the agricultural production operation mode is developed towards the large-scale and intensive direction, and the requirements for high-reliability and matchable heavy tractors are rapidly increased. In order to enable the tractor to be matched with heavier compound machines, the lifting force requirement on the tractor is also increased, and the lifting force of the tractor mainly depends on the mounting point of the lower pull rod and the like under the condition that the cylinder diameters of the oil cylinders are the same, so that the reasonable mounting point of the lower pull rod is important. At present, reasonable lower pull rod mounting points are generally closer to a half shaft shell of a tractor, and the lower pull rod mounting supports are basically adopted to be mounted on a chassis shell in China, so that the integration degree of the whole machine is low, the space structure is complex, and the assembly is difficult. Therefore, it is necessary to provide a traction device with high integration to overcome the above-mentioned drawbacks.

Disclosure of Invention

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

According to one aspect of the present invention, there is provided 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 limit rod mounting part;

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

the first limiting rod is characterized in that one end of the first limiting rod is movably connected with the first limiting rod installation part, the other end of the first limiting rod is movably connected with the first pull-down rod, and the first pull-down rod is arranged between the first limiting rod and the transmission case shell.

Preferably, the novel transmission mechanism further comprises a second half shaft shell, a second lower pull rod and a second limiting rod, wherein the second half shaft shell is directly fixed with the transmission case shell, the second half shaft shell is provided with a second lower pull rod installation part and a second limiting rod installation part, the first half shaft shell and the second half shaft shell are symmetrically arranged on two sides of the transmission case shell in the horizontal direction, one end of the second lower pull rod is movably connected with the second lower pull rod installation part, one end of the second limiting rod is movably connected with the second limiting rod installation part, the other end of the second limiting rod is movably connected with the second lower pull rod, the second lower pull rod is arranged between the second limiting rod and the transmission case shell, and the first lower pull rod installation part is integrally arranged with the first half shaft shell.

Preferably, a first connecting seat is arranged below the first limiting rod installation part, the first limiting rod is movably connected with the first connecting seat, a second connecting seat is arranged below the second limiting rod installation part, and the second limiting rod is movably connected with the second connecting seat.

Preferably, the lifting device further comprises a lifting device and an upper pull rod movably connected with the lifting device, wherein pulling side plates are arranged on two sides of the transmission case shell and extend backwards from the transmission case shell.

Preferably, the rear end of the gearbox shell is provided with a protective cover, the protective cover is fixed at the top of the pulling side plate, the top of the protective cover is provided with a supporting piece, 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 positioned at two sides of the protective cover, the lifting device comprises a first lifting arm and a second lifting arm which are respectively positioned at 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 an upwardly projecting first safety frame mounting portion and the second axle housing includes an upwardly projecting second safety frame mounting portion.

Preferably, the first and second axle housings 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 part formed by bending the metal strip, and the upper pull rod is arranged in the concave part.

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 telescopic along the axial direction of the upper pull rod, the first limiting rod, the second limiting rod and the second connecting 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 shaft shell, so that the space layout is simplified, the assembly structure of the lower pull rod is more reasonable, the overall strength is obviously improved, and the requirement of a user on heavy equipment is met; the supporting piece of the upper pull rod is arranged on the PTO protective cover, so that the assembly is convenient, and meanwhile, the production cost and the processing cost are saved.

Drawings

The invention is described in further detail below with reference to the attached drawings and detailed description:

FIG. 1 is a perspective view of a traction device 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 the first axle housing of the present invention;

fig. 5 is an enlarged view of a portion of the support of the present invention.

Detailed Description

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

For the sake of simplicity of the drawing, the parts relevant to the present invention are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.

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

In this context, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by 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 merely to distinguish between descriptions and are not to be construed as indicating or implying 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 explain the specific embodiments of the present invention with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the invention, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.

Referring to fig. 1 and 2, the present invention discloses a traction device 100, comprising: the transmission housing 1, the first axle housing 2, the second axle housing 2', the first lower tie rod 3, the second lower tie rod 3', the first limit rod 4, the second limit rod (not labeled), the lifter device 5 and the upper tie rod 7. The first and second axle 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, the bottom of the first axle housing 2 is integrally provided with a first lower tie rod mounting portion 31, and the bottom of the second axle housing 2 'is integrally provided with a second lower tie rod mounting portion 31'. The bottom of the first half-shaft housing 2 is also provided with a first stop lever mounting portion 21, and the first connecting seat 41 is fixed below the first stop lever mounting portion 21 by bolts. One end of the first limiting rod 4 is movably connected with the first connecting seat 41, and the other end of the first limiting rod is movably connected with the first lower pull rod 3.

The bottom of the second axle housing 2' is further provided with a second stop lever mounting portion 21', and a second connecting seat (not labeled) is fixed below the second stop lever mounting portion 21' by bolts. 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 gearbox 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 coaxially rotate, the first lifting arm 51 and the second lifting arm 52 respectively drive the first link 61 and the second link 62 to vertically move up and down, and the first link 61 and the second link 62 respectively 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' respectively rotate with the first lower pull rod mounting portion 31 and the second lower pull rod mounting portion 31' as rotation centers.

Referring to fig. 1, a pulling side plate 11 is respectively provided at the left and right sides of the transmission case housing 1, and the pulling side plate 11 is fixed with the transmission case housing 1 by bolts. The pulling side plate 11 extends to the rear of the transmission case housing 1, and a protective cover 12 is arranged at the top of the pulling side plate 11. The trailer side plate 11 is used for connecting a trailer frame, and the trailer frame is used for connecting a trailer matched with a following user. The main body part of the protection cover 12 is horizontally arranged, the left side and the right side are downwards bent and fixed with the pulling side plate 11, and the protection cover 12 is used for protecting the PTO output shaft.

The upper end of the protective cover 12 is provided with a supporting piece 121, and the supporting piece 121 is formed by bending a metal strip. One end of the supporting member 121 is fixed to the top of the shield 12 by a bolt, and the other end is bent to form a groove portion (not shown) with an upward opening. When the position needs to be adjusted, the support member 121 can be rotated to adjust the position by unscrewing 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 distributed 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 rod 7 is placed in the recess of the support member 121, and the support member 121 provides an upward supporting force to the upper tie rod 7. Usually, the upper pull rod hook is arranged on the vehicle body, and the space arrangement is inconvenient. The support 121 of the present invention is fixed to the top of the shield 12, and has a large space and convenient assembly.

Referring to fig. 2, the top of the first axle housing 2 is further provided with a first safety frame mounting portion 22 protruding upward, the top of the second axle housing 2' is provided with a second safety frame mounting portion 22' protruding upward, and both ends of the bottom of the safety frame of the tractor are respectively fixed on the first safety frame mounting portion 22 and the second safety frame mounting portion 22 '. The safety frame of the tractor is used for effectively supporting the tractor when the tractor is tipped over, so that 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 link 7, the first link 61, the second link 62, the first stopper rod 4, and the second stopper rod of the present invention are all provided in a structure that is screwed and can expand and contract in the axial direction thereof. A lift cylinder for driving the first lift arm 51 and the second lift arm 52 to rotate is provided inside the lifter device 5.

The traction device 100 of the invention integrates the installation sites of the two lower pull rods on the half axle shells at the two sides of the transmission case shell respectively, and can omit the layout space and the cost of the lower pull rod installation support after the integration layout, so that the whole machine lifting and hanging layout is more concise and compact, and the whole strength is firmer and more reliable under the condition of unchanged using functions.

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. Therefore, 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 traction device, comprising:

a transmission case housing;

the first limiting rod is movably connected with the first limiting rod mounting part, the other end of the first limiting rod is movably connected with the first lower pull rod, and the first lower pull rod is arranged between the first limiting rod and the transmission case shell;

a pull rod;

the transmission case is characterized in that pulling side plates are arranged on two sides of the transmission case body, the pulling side plates extend backwards from the transmission case body, a protective cover is arranged at the rear end of the transmission case body and fixed at the top of the pulling side plates, 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.

2. The traction device according to claim 1, further comprising a second half shaft housing, a second lower pull rod and a second limit rod, 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 pull rod mounting portion and a second limit rod mounting portion, the first half shaft housing and the second half shaft housing are symmetrically arranged on two sides of the transmission case housing in the horizontal direction, one end of the second lower pull rod is movably connected with the second lower pull rod mounting portion, one end of the second limit rod is movably connected with the second limit rod mounting portion, the other end of the second limit rod is movably connected with the second lower pull rod, the second lower pull rod is arranged between the second limit rod and the transmission case housing, the first lower pull rod mounting portion and the first half shaft housing are integrally arranged, and the second lower pull rod mounting portion and the second half shaft housing are integrally arranged.

3. The traction device of claim 2, wherein a first connecting seat is arranged below the first limiting rod installation part, the first limiting rod is movably connected with the first connecting seat, a second connecting seat is arranged below the second limiting rod installation part, and the second limiting rod is movably connected with the second connecting seat.

4. The traction device of claim 3, further comprising a lifter device, wherein the upper tie rod is movably coupled to the lifter device.

5. The traction device of claim 4, further comprising a first link and a second link on each side of the shield, wherein the lifter device comprises a first lift arm and a second lift arm on each side of the upper pull rod, wherein the first link connects the first lift arm and the first lower pull rod, and wherein the second link connects the second lift arm and the second lower pull rod.

6. The traction device of claim 2, wherein the first axle housing includes an upwardly projecting first safety frame mount and the second axle housing includes an upwardly projecting second safety frame mount.

7. The traction device of claim 6 wherein the first axle housing and the second axle housing are each provided with a forward projecting body bracket mounting portion.

8. The traction device of claim 1, wherein one end of the support member is fixed at the upper end of the protective cover through a bolt, the support member is formed by bending a metal strip, the support member comprises a concave part formed by bending the metal strip, and the upper pull rod is arranged in the concave part.

9. The traction device of claim 5, wherein the pull-up rod, the first stop rod, the second stop rod, the first link, and the second link are each configured to be axially retractable.