JP3201002B2 - Work equipment traveling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling device for a working machine such as a combine.

[0002]

2. Description of the Related Art A conventionally known Japanese Patent Application Laid-Open No. 3-27213 discloses a front link mechanism having a substantially L-shape as viewed from the side at the lower left and right positions on the front side of a body frame. Rear link mechanisms each having a substantially L-shape as viewed from the side are disposed at the lower left and right positions, the front link mechanism pivotally supports an intermediate portion thereof with respect to the body frame, and the rear link mechanism includes the rear link mechanism. The intermediate portion is pivotally supported on an intermediate frame between the body frame and the traveling frame, and the intermediate frame is pivotally supported on the body frame via a pitching link mechanism, and an upper end portion of the front link mechanism and the rear side. A traveling device of a working machine in which an upper end of a link mechanism is connected by a connecting member, and a rear end of the front link mechanism and a rear end of the rear link mechanism are respectively mounted on a traveling frame. There.

[0003]

In the known combine frame, an intermediate frame exists between the body frame and the traveling frame. Due to the presence of the intermediate frame, the structure becomes complicated, heavy, tall and unstable, and a large amount of mud adheres to the intermediate frame when traveling on wetlands, and the speed does not rise when traveling on the road .

[0004]

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned problems by omitting the intermediate frame, while having the rolling device and the pitching device as they are.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a front link mechanism 11, 11 'having a substantially L-shape when viewed from the side for rolling provided on the front and rear sides of the body frame 1 at the lower left and right positions, and a rear link mechanism. A side link mechanism 17, 17 ′, a rod 21 for connecting an upper end of the front link mechanism 11, 11 ′ and an upper end of the rear link mechanism 17, 17 ′,
21 ′, a running frame 5, 5 ′ having a rear end of the front link mechanism 11, 11 ′ and a rear end of the rear link mechanism 17, 17 ′, and the front link mechanism 11, 1
Front support shafts 13 and 13 'and rear support shaft 1 which are intermediate portions of 1' and rear link mechanisms 17 and 17 ', respectively.
9, 19 ', and one of the front support shafts 13, 13' and the rear support shafts 19, 19 'is pivotally supported on the body frame 1 and the other is via a pitching link mechanism 26. A pair of left and right arms 32 and 32 ′ attached to the body frame 1 are pivotally supported by a left and right link mechanism support member 31 connected by a horizontal rod 34, and
1, 11 'and the base of the rolling cylinders 22, 22' for operating the rear link mechanisms 17, 17 'are pivotally mounted on the body frame 1 via arms 24, 24'. A regulating member 40 between the bases of the rolling cylinders 22 and 22 ′ and the left and right link mechanism support member 31;
This is a traveling device of a working machine provided with 40 '.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to an example of a combine. A reference numeral 1 denotes a body frame of the combine, and 2 denotes a traveling device provided at a position below the body frame 1. A threshing device is provided at a position above the body frame 1, and a mowing part is provided at a position in front of the traveling device 2. The body frame 1 is composed of vertical frames 3, 3 'in the front-rear direction and horizontal frames 4 in the left-right direction connecting the vertical frames 3, 3'. Below the body frame 1, traveling frames 5, 5 'of the traveling device 2 parallel to the vertical frames 3, 3' are provided at predetermined intervals on the left and right. Rollers 6, 6 'are provided on the outer surfaces of the running frames 5, 5' at predetermined intervals in the front and rear, and a crawler 7 is wound around the outer circumference of the wheels 6, 6 '. Reference numerals 8 and 8 'denote drive wheels, and reference numerals 9 and 9' denote idle rollers.

Thus, a rolling device for leveling the body frame 1 with respect to the left and right inclination of the field and the body frame 1 with respect to the front and rear inclination are provided between the body frame 1 and the traveling frames 5 and 5 '. Although a pitching device is provided to make it horizontal, the conventional intermediate frame is omitted. At the front of the running frames 5, 5 ', there are provided left and right front horizontal mounting shafts 10, 10'. Front ends of front side arms 12, 12 'of front side link mechanisms 11, 11' are axially attached to front side mounting shafts 10, 10 'projecting inward from the running frames 5, 5'. The bases of the arms 12, 12 'are provided on the front support shafts 13, 1 in the left-right direction.
Attach to 3 'in a fixed state. The front support shafts 13 and 13 ′ are provided on the front support metal 14 and 1 provided on the body frame 1 side.
The shaft is freely rotatable at 4 '. Front support metal 14,
Front support shafts 13, 13 'protruding inward from 14'
, The front vertical arm 1 of the front link mechanism 11, 11 '
Attach the bases of 5, 15 'in a fixed state. Therefore,
The front link mechanism 11, 11 'is connected to the body frame 1
The intermediate portion is supported by front support shafts 13 and 13 '.

[0008] At the rear of the traveling frames 5, 5 ', there are provided left and right lateral lateral mounting shafts 16, 16', and the rear lateral mounting shafts 16, 16 projecting inward from the traveling frames 5, 5 '.
At 16 ', front ends of rear side arms 18, 18' of rear link mechanisms 17, 17 'are pivotally mounted. Rear side arm 18, 1
The base of 8 'is fixedly attached to the left and right rear support shafts 19 and 19'. The bases of the rear vertical arms 20, 20 'of the rear link mechanisms 17, 17' are fixed to the rear support shafts 19, 19 '. The intermediate portions of the rear vertical arms 20, 20 'and the distal ends of the front vertical arms 15, 15' are connected by rods 21, 21 'parallel to the running frames 5, 5'. , 20 ′ and the front vertical arms 15, 15 ′ rotate simultaneously. The rear vertical arms 20, 20 'have rolling cylinders 22,
The ends of the rods 23, 23 'of 22' are pivotally mounted, and the bases of the rolling cylinders 22, 22 'are arms 24, 24'.
Of the arm 24, 2 '
The base of 4 'is attached to the horizontal frame 4 of the body frame 1.

A pitching link mechanism 26 is provided at the rear of the body frame 1. The pitching link mechanism 26 is provided with a pair of left and right pitching support metals 27 and 27 ′ at predetermined positions on the rear side of the body frame 1, and rotates both ends of a horizontal pitching horizontal shaft 28 between the pitching support metals 27 and 27 ′. Only freely mount the shaft. The bases of the pitching horizontal arms 30 and 30 ′ of the pitching arm 29 are fixed to the pitching horizontal shaft 28, and the distal ends of the pitching horizontal arms 30 and 30 ′ are located above the arms 32 and 32 ′ of the left and right link mechanism support member 31. Are attached to the shafts 33 and 33 '. The left and right link mechanism support member 31 has a pair of left and right arms 32, 32 '.
The intermediate portion of 2 'is formed by connecting with a horizontal rod 34,
The rear support shafts 19, 19 'are attached to the lower portions of the arms 32, 32', respectively. A base of a pitching vertical arm 35 is fixed to one of the pitching horizontal arms 30 and 30 ′ of the pitching arm 29, and a pitching rod 37 of a pitching cylinder 36 is axially mounted on a tip of the pitching vertical arm 35. The base of the pitching cylinder 36 is mounted on the body frame 1 by being pivotally attached thereto. The pitching cylinder 36 is the rolling cylinder 2.
2 ', the pitching rod 37 of the pitching cylinder 36 is provided in a direction in which the pitching rod 37 of the pitching cylinder 36 expands and contracts rearward. 36 can be located not only between the threshing apparatus and the Glen tank provided on the side of the threshing apparatus, but also the grain discharge cylinder of the Glen tank can be provided at the rear of the fuselage without interfering with the pitching cylinder 36. , Improve the degree of freedom of layout design. In addition, when the Glen tank is rotated outward so as to be able to open between the threshing device, maintenance of the pitching cylinder 36 and the rolling cylinder 22 'can be easily performed.

Thus, the rolling cylinder 2
Axle 2 on which the base arms 24, 24 'of the bases 2, 22' are pivoted
The bases of the regulating members 40 and 40 ′ in the front-rear direction are pivotally mounted on 5 and 25 ′.
The shaft is attached by 1, 41 '. Then, the position of the pitching horizontal axis 28 and the axes 33 and 33 'of the pitching link mechanism 26 and the pitching horizontal arm 3 of the pitching arm 29
When the pitching cylinder 36 is expanded and contracted to the length of 0, 30 ', the shafts 33, 33' move to the center of the pitching horizontal axis 28 as shown in FIG. 6, and the bases of the regulating members 40, 40 'roll. The bases of the cylinders 22 and 22 ′ are pressed to the rear side, and the traveling frames 5 and 5 ′ are lowered to relatively raise the body frame 1 to move the body frame 1 and the traveling frames 5 and 5 ′. It is configured to increase the interval between them. 42 is a stroke detecting device. The traveling frames 5, 5 ', the front link mechanisms 11, 11', the rear link mechanisms 17, 17 ', and the rods 21, 21' respectively constitute parallel links, and the rolling cylinder 22, If the 22 'does not expand or contract, the parallel link will be in a fixed state. In this state, if the rear support shafts 19 and 19' are moved up and down, the parallel link will become the front support shaft of the front support metals 14 and 14 '. 13,
The rear side is moved up and down around 13 '. Therefore, in configuring the pitching device, a so-called intermediate frame (pitching frame) provided between the body frame 1 and the traveling frame 5 becomes unnecessary,
By directly raising and lowering the rear portions of the traveling frames 5, 5 ', the rear portion of the body frame 1 can be relatively raised and lowered to correspond to the inclination of the field in the front-back direction. It is of course possible to set the center of rotation in pitching to the rear side, and the traveling frames 5, 5 'and the front link mechanism 11,
11 ', rear link mechanism 17, 17' and rod 21, 2
The parallel link consisting of 1 ′ is a rolling cylinder 2
If the second frame 22 and the second frame 22 'do not expand or contract, the fixed state is assumed for convenience of explanation.
5 'is lowered, and the body frame 1 is relatively raised to increase the interval between the body frame 1 and the traveling frames 5, 5'.

[0011]

Next, the operation will be described. (Operation of Rolling Apparatus) The present invention has the above configuration,
The work is performed by moving the body forward, but when the body frame 1 is tilted left and right due to unevenness in the field, the body left / right tilt detection sensor detects the left / right tilt of the body frame 1 and one of the left and right rolling cylinders 22 and 22 ′. For example, the left rolling cylinder 22 is expanded and contracted, and the left rolling cylinder 22 is expanded and contracted by rotating the front vertical arm 15 and the rear vertical arm 20 via the rod 21, and the front vertical arm 15 rotates the front support shaft 13. Rotating the front side arm 12 about the front side support shaft 13 by rotation of the front side support shaft 13,
At the same time, the rotation of the rear vertical arm 20 causes the rear support shaft 19 to rotate, and the rotation of the rear support shaft 19 causes the rear horizontal arm 18 to rotate. Roll up and down in opposite directions to correct the left-right tilt. In this case, as will be described later, since the rear support shafts 19 and 19 'are fixedly supported via the left and right link mechanism support members 31, they can be smoothly operated without an intermediate frame.

(Operation of the Pitching Apparatus) Since the present invention has the above-described structure, when the forward / backward inclination detecting sensor provided at a desired position of the aircraft frame 1 detects the forward / backward inclination, the pitching cylinder 36 is expanded and contracted to perform pitching. Pitching rod 37 of the cylinder 36
The pitching vertical arm 35 is pushed and pulled to rotate about the pitching horizontal axis 28 (the pitching horizontal arms 30, 30 'also rotate because the rotation centers of the pitching vertical arm 35 and the pitching horizontal arms 30, 30' are the same). ), The pitching vertical arm 35 and the pitching horizontal arms 30 and 30 ′ rotate the upper part of each arm 32 and 32 ′ of the left and right link mechanism support member 31 about the pitching horizontal axis 28 and move up and down. The rear support shafts 19, 19 'attached to the lower portions of the arms 32, 32' are moved up and down to raise and lower the rear part of the traveling device 2 and relatively raise and lower the rear part of the body frame 1 so as to be horizontal.

In this case, the pitching cylinder 36 is provided so that the pitching rod 37 extends and contracts rearward. When the pitching cylinder 36 is contracted, the pitching rod 37 is raised rearward, so that the holding power of the cylinder is increased, and the horsepower loss can be prevented by effectively using the cylinder. Also,
The left and right rolling devices include a traveling frame 5, 5 ', a front link mechanism 11, 11' and a rear link mechanism 17, 1, 1 '.
The parallel link is formed by the 7 'and the rods 21 and 21', and if the rolling cylinders 22 and 22 'do not expand and contract, the parallel link is in a fixed state. In this state, the expansion and contraction of the pitching cylinder 36 causes the parallel link to move. By raising and lowering the portion of the rear support shaft 19 as described above, the center of the front support shaft 13 of the front link mechanisms 11, 11 '
The rear side of the parallel link is moved up and down, and the rear part of the body frame 1 is moved up and down relatively to correct the longitudinal inclination of the body frame 1.

However, as described above for convenience of explanation,
If the rolling cylinders 22 and 22 'do not expand or contract, the traveling frames 5, 5' and the front link mechanisms 11, 11 'are not extended.
And the parallel link consisting of the rear link mechanisms 17, 17 'and the rods 21, 21' is in a fixed state. However, the rolling cylinders 22, 22 'have bases on the side of the body frame 1 via the arms 24, 24'. Because it is attached to
Even if the rolling cylinders 22 and 22 'expand and contract, the rear vertical arm 20 cannot be immediately rotated, and
Since the leading ends of 0, 40 'are attached to the left and right link mechanism support member 31, the rolling cylinder 22,
22 'works. Therefore, regardless of the direction in which the pitching arm 29 is rotated by the pitching cylinder 36, the shafts 33 and 33 'move to the center of the pitching horizontal axis 28 as shown in FIG.
The base of 0 'acts to push the bases of the rolling cylinders 22, 22' rearward, and the running frames 5, 5 '
Lowers, and the body frame 1 rises relatively to increase the distance between the body frame 1 and the traveling frames 5, 5 '.
Therefore, if the pitch of the body frame 1 is lowered downward, the vehicle height is automatically increased, so that the interference between the body frame 1 and the traveling device 2 is prevented. In addition, even when pitching rearward is performed, the gap between the transmission case (not shown) provided on the front side of the body frame 1 and the ground can be widened, and wet field traveling performance can be improved.

[0015]

According to the present invention, when viewed from the side for rolling provided on the front and rear sides of the right and left lower positions of the body frame 1, substantially L
Front link mechanisms 11, 11 'and rear link mechanisms 17, 17'
Rods 21 and 21 ′ connecting the upper end of 1 ′ and the upper ends of the rear link mechanisms 17 and 17 ′; the rear ends of the front link mechanisms 11 and 11 ′ and the rear link mechanism 17;
A traveling frame 5, 5 'on which the rear end of 17' is pivotally mounted;
A front support shaft 1 which is an intermediate portion between the front link mechanisms 11, 11 'and the rear link mechanisms 17, 17'.
3, 13 'and a rear support shaft 19, 19'
The front support shafts 13, 13 'and the rear support shafts 19, 19'
One of them is pivotally supported by the body frame 1, and the other is a left and right link mechanism in which a pair of left and right arms 32 and 32 ′ attached to the body frame 1 via a pitching link mechanism 26 are connected by a horizontal rod 34. pivotally supported on the support member 31, the front link mechanism 11, 11 'and the rear link mechanism 17, 17' rolling cylinder 22 for operating the 'base of a over arm 24, 24' through said This is a traveling device of a working machine which is mounted on the body frame 1 and has regulating members 40, 40 'provided between the bases of the rolling cylinders 22, 22' and the left and right link mechanism support members 31. Although it is possible to perform rolling and pitching, the intermediate frame between the body frame 1 and the traveling frame 5 which has existed in the conventional example is omitted, so that the structure is simplified and the weight is reduced. It is possible to improve the running stability by lowering the vehicle height and improving the running stability. Especially, since there is little adhesion of mud even when working in wetland work, the running performance is remarkably improved.
'The base of A over arm 24, 24' 2 via a pivotally attached to the body frame 1, the rolling cylinder 22, 24, 32
Since the regulating members 40 and 40 'are provided between the base of 2' and the left and right link mechanism supporting member 31, when the body is pitched by the pitching cylinder 36, the traveling frame 5 is lowered, so that the pitching can be performed. It not only widens the range but also improves driving performance.

[Brief description of the drawings]

FIG. 1 is a side view of a traveling device.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of the main part.

FIG. 4 is a plan view of the main part.

FIG. 5 is an exploded perspective view of a pitching mechanism.

FIG. 6 is a side view of a pitching state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... body frame, 2 ... traveling apparatus, 3 and 3 '... vertical frame, 4 ... horizontal frame, 5 and 5' ... traveling frame, 6,
6 ': rolling wheel, 7, 7': crawler, 8, 8 ': driving wheel,
9, 9 ': idle roller, 10, 10': rear horizontal mounting shaft, 11, 11 ': front link mechanism, 12, 12': front horizontal arm, 13, 13 ': front support shaft, 14, 14'
... front support metal, 15, 15 '... front vertical arm, 1
6, 16 ': rear horizontal mounting shaft, 17, 17': rear link mechanism, 18, 18 ': rear horizontal arm, 19, 19': rear support shaft, 20, 20 ': rear vertical arm, 21, 21 '
... Rod, 22, 22 '... Cylinder for rolling, 2
3, 23 '... rod, 24, 24' ... arm, 25, 2
5 ': shaft, 26: pitching link mechanism, 27, 27'
... Pitching support metal, 28 ... Pitching horizontal axis, 2
9, 29 ': pitching arm, 30, 30': pitching lateral arm, 31: left and right link mechanism support member, 32,
32 '... arm, 33, 33' ... shaft, 34 ... horizontal rod, 35
... Pitching vertical arm, 36 ... Pitching cylinder,
37 pitching rod, 40, 40 'regulating member, 4
1, 41 '... shaft, 42 ... stroke detection device.

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B62D 55/10 B62D 55/104 B62D 55/116

Claims (1)

(57) [Claims] 1. A front link mechanism 11, 11 'and a rear link mechanism 17, 17' each having a substantially L-shape as viewed from the side for rolling provided on the front and rear sides of a lower left and right position of the body frame 1, respectively. Rods 21 and 21 ′ connecting the upper ends of the front link mechanisms 11 and 11 ′ and the upper ends of the rear link mechanisms 17 and 17 ′, and the front link mechanism 1
1, 11 'rear end and the rear link mechanism 17, 17'
Traveling frames 5 and 5 ′ with the rear ends thereof, and the front link mechanisms 11 and 11 ′ and the rear link mechanisms 17,
The front support shafts 13, 1 which are intermediate portions of the respective 17 '
3 'and rear support shafts 19, 19'. One of the front support shafts 13, 13 'and the rear support shafts 19, 19' is pivotally supported on the body frame 1 and the other is supported by the other. The pair of left and right arms 32 and 32 ′ attached to the body frame 1 via the pitching link mechanism 26
4 by pivoted to the left and right link mechanisms supporting member 31 coupling the front link mechanism 11, 11 the base of 'and the rear link mechanism 17, 17' rolling cylinder 22 for operating the 'is A over arm 24 , 24 ′, the base of the rolling cylinders 22, 22 ′ and the left and right link mechanism support member 31.
A traveling device of a working machine having regulating members 40, 40 'provided between them.