JPH0640555Y2 - Sliding structure in moving body moving device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a traveling body moving device capable of adjusting the left and right crawler intervals in a moving vehicle such as a combine having a crawler traveling device.

<Prior Art> Conventionally, in a traveling vehicle of this type, when it is, for example, a combine harvester, in the case of splitting work or ridge work, the uncut stem culm is cut by a running body that is on the side of the cut land in normal work. In order to avoid trampling on or riding on a ridge, one in which the traveling body on the cut land side can be moved in parallel to the other traveling body side is known, for example, in JP-A-61-9213. .

<Problems to be solved by the invention> By the way, it is a well-known fact that in a general crawler type traveling device, the left and right traveling bodies must be parallel. However, when the traveling body is moved in parallel to the left and right in a field with soft ground, it is extremely difficult to maintain a perfect parallel state because strong and non-uniform slide resistance from the ground is applied to the traveling body.

Especially, if the axis of movement of the slide frame shifts in the front-back direction within the frame on the machine side that houses the slide frame, the non-sliding contact part of the slide frame will contact the frame on the machine side, allowing smooth left and right slide movement. Moreover, the problem that the slide frame is locked in the frame on the machine body side and the movable traveling body does not move left and right has not been solved.

An object of the present invention is to solve the above problems, to ensure smooth sliding movement of a slide frame, and to ensure left and right slide driving of a movable traveling body.

<Means for Solving the Problems> The present invention for solving the above-mentioned problems is achieved by the traveling body 6,
The body frame 13 that supports the body 1 is provided on the left and right traveling frames 31 to which the 7 is mounted, and the plurality of horizontal frames 12a and 12b horizontally arranged in the body frame 13 are horizontally located on one traveling frame 31 side below Multiple slide frames fixed to
In the structure in which 14a and 14b are respectively housed so as to be movable left and right, the slide frames 14a and 14b pivotally support a plurality of rollers 15 that support the load of the machine body by rolling contact with the horizontal frames 12a and 12b from the lower side. , 12b or slide frame 14a, 1
4b includes horizontal frames 12a, 12b and slide frames 14a, 14b.
The guide rollers 20 and 22 for rolling the slide frames 14a and 14b in the left and right direction are pivotally supported on either one of the left and right lateral movement guide surfaces 21 and 23.

<Operation> The rollers 15 of the slide frames 14a and 14b are the horizontal frame 12
The movable traveling body frame 31 can be slid to the left and right while rolling on the a and 12b to support the machine load, and the slide frame 14 or the lateral movement guide surfaces 21 and 2 of the lateral frame 12 can be moved.
By rolling the guide rollers 20 and 22 supported by the horizontal frame 12 or the slide frame 14 to 3, the guide rollers 20 and 22 maintain the straightness of the slide frame 14, and the front and rear slide frames 14a and 14b Horizontal frame of 14a, 1
The smooth movement of the slide frame 14 is ensured by preventing friction and the like within the 4b.

<Embodiment> Next, an embodiment of the present invention will be described with reference to the drawings. Third
In the figure, reference numeral 1 denotes a combine traveling machine body. The traveling machine body 1 includes a pre-processing section 2 for pre-processing such as cutting stem culms, a threshing section 3 for threshing cut stalks, and a culm. The post-processing unit 4 for performing post-processing such as shredding, the grain storage unit 5 for storing the selected grain in the grain bag, and the like are all conventional.

Reference numerals 6 and 7 shown in FIG. 4 denote a pair of left and right crawler type traveling bodies, the traveling body 6 being on the uncut land side and the traveling body 7 being on the cut land side. The traveling body 6 is integrally assembled to the machine body frame 13 described later via the support frame 6a, and the outer edge of the crawler 6b substantially coincides with the weeding position of the uncut land side divider 2a of the pretreatment unit 2. It is like this.
On the other hand, as shown in FIGS. 5 and 6, the already-cut land side (movable side) traveling body 7 is composed of the drive wheels 7a, the rolling wheels 7b, and the idler 7c. Is
A mounting frame 8 on which the rolling wheels 7b are pivotally mounted, and a support frame extending upward from the front and rear portions of the mounting frame 8.
9a, 9b and an auxiliary frame 10 connecting the front and rear support frames 9a, 9b have an integral frame structure.
On the other hand, as shown in FIG. 7, the body frame 13 includes a pair of left and right vertical frames 11 facing the front-rear direction, and a pair of front and rear horizontal frames 12a, 12 interposed between the vertical frames 11.
Although a frame is formed by b and b, the vertical frame 11 extends further rearward to form a frame, and forms a rear frame portion. Further, the lower sides of the horizontal frames 12a, 12b are open, a slide frame 14 to be described later is accommodated therein, and travels in the horizontal frames 12a, 12b.

The upper ends of the support frames 9a and 9b are shown in FIGS.
Slide frames 14a, 14b facing left and right as shown
Are integrally attached to each other (the support frame 6a of the uncut land-side traveling body 6 is integrally fixed to the lateral frames 12a and 12b), but the slide frames 14a and 14b.
A plurality of left and right integrated rollers 15 are supported by the roller. The slide frames 14a, 14b are housed in the horizontal frames 12a, 12b, and the rollers 15 are in contact with the inner ceilings of the horizontal frames 12a, 12b to receive the weight of the machine body. It is possible. Further slide frame 14
The a and 14b project on the crawler 16 and support the weight of the combine just above the crawler 16. As described above, the slide frame 14 protruding above the crawler 16 has the roller as described above.
15 bearings, but located on crawlers 16
As shown in FIG. 1, 15a and 15b are width centers M of the crawler 16.
It is supported at a distance of 1 which is an equal distance from. Therefore, the external force P received by the crawler 16 from the ground as a reaction force of the airframe load
On the other hand, the loads Ra and Rb received by the rollers 15a and 15b are substantially equal to each other, and P = Ra + Rb, Ra≈Rb. By equalizing the loads applied to the rollers 15a and 15b, the lateral frame 12 is better seated, and the rattling of the slide frame 14 is reduced. Also, since the wear of each roller 15a, 15b is made uniform,
There is also less rattling caused by uneven roller wear. The arrangement of the rollers 15 described above is the same when three or more rollers are attached, and the same effect can be obtained by arranging the rollers 15 equidistant from the crawler width center position M to the left and right.

Auxiliary rollers 15c and 15d are supported on the inner end of the slide frame 14. The auxiliary roller 15c rolls on the inner ceiling of the horizontal frame 12, and the auxiliary roller 15c includes a lower cover 18 to be described later.
On the upper surface of. On the other hand, when traveling on an uneven road surface or the like, the ground contact force P of the crawler 16 fluctuates and the rollers 15a, 15
The load applied to b may be out of balance. The auxiliary rollers 15c and 15d are configured to support the load on the entire slide frame 14 by receiving a load in such a case, and the smooth slide of the slide frame 14 is always ensured. Since the auxiliary rollers 15c and 15d are in contact with the upper and lower surfaces of the horizontal frame without any gap, the rollers on the crawler
If the load received by 15a, 15b becomes unbalanced, it immediately acts to correct it and slide frame 14
To prevent rattling.

As shown in FIGS. 1 and 6 already described, in the horizontal frames 12a, 12b, a lower cover 18 is attached to the lower side of the slide frame 14a, 14b housing portion. At one end of the lower cover 18, there is formed a notch 18a into which the support frames 9a and 9b are inserted, and the slide frames 14a and 14b are formed.
The left and right sides are provided in the longitudinal direction so that the support frames 9a and 9b can move along with the left and right movement of the.

The movable traveling body 7 is moved by a two-way hydraulic cylinder 27 provided between the machine body frame 13 and the traveling frame 31 of the movable traveling body 7. As shown in FIG. 7, the parallel state of the traveling body 7 is maintained by a moving mechanism 36 formed by a cross-shaped panto link provided between the traveling frame 31 and the machine body frame 13.

In the present embodiment, not only the displacement of the upper and lower axes of the slide frame 14 but also the displacement of the moving axis in the front-rear direction is prevented to similarly ensure the smooth sliding of the movable-side traveling body 7. can do. 9 to 11, in addition to the configuration of the traveling frame 31 described above, a third slide frame 14c is also provided above the auxiliary frame 10 to which the hydraulic cylinder 27 is connected. The slide frame 14c is arranged so as to overlap the upper side of the hydraulic cylinder 27 as shown in the figure, and is parallel to the other slide frames 14a and 14b. The slide frame 14c is the body frame 13
The lower cover 17 is housed in the horizontal frame 12d provided in, and the lower cover 17 is attached from the lower side like the front and rear horizontal frames 12a and 12b.

A pair of middle guide rollers 22 are axially supported at a predetermined interval on the upper surface of the lower cover 17, and are arranged so as to be in rolling contact with the lateral movement guide surface 21 formed on the side surface of the slide frame 14c from both sides. The middle guide roller 22 restricts the front-back movement of the slide frame 14c, so that the straightness of the movement can be secured. Further, since the slide frame 14c is arranged directly above the hydraulic cylinder 27, the driving of the hydraulic cylinder 27 does not have the influence of the moment that distorts the slide axis of the slide frame 14c in the front-rear direction, so that the parallel state is surely maintained while traveling. It is possible to move the body 7 in the left-right direction. Further, when traveling in the left-right direction, external force is applied to the traveling body 7 from the side, and it is difficult to maintain the parallel state of the traveling bodies 6 and 7, but the middle guide roller 22 keeps the traveling body 7 parallel. Be drunk

2 and 8 show another embodiment.
In the structure of this embodiment, the third slide frame 14c is not provided, and the guide roller 20 provided on the lower cover 18 is rolled on the lateral movement guide surface 21 formed on the side surface of one slide frame 14a (or 14b). I have a close contact. Even with such a structure, the straightness of the slide frame 14 is maintained and the structure is simple, as in the above embodiment. By guiding the slide frame 14a on the front side, which is close to the retractable drive shaft 19a for driving the crawler 16, as described above, the drive shaft 19a can be indirectly maintained in a straight line shape, and the drive shaft 19a can be smoothly expanded and contracted. Can be secured.

By guiding only one of the front and rear slide frames 14a, 14b, the entire traveling body 7 can be smoothly slid even if the parallelism between the slide frames 14a, 14b is not maintained. In order to maintain the straightness of the guide roller in the above embodiment, the guide roller is pivotally supported on the slide frame 14 side, and the side surface 23 (Fig. 8) in the horizontal frame 12 is used as the lateral movement guide surface to guide the side surface 23. The rollers may be rolled.

Next, the hydraulic circuit of the hydraulic cylinder 27 will be described. 12th
The figure is a hydraulic circuit diagram of a hydraulic cylinder 27 including a hydraulic cylinder. The hydraulic pump 25 receives power from the engine and is connected to a two-way hydraulic cylinder 27 via a solenoid valve 24. Therefore, the normal movement operation of the movable-side traveling body 7 is electrically performed by the operation switch provided on the operation panel. Further, pilot check valves 26a and 26b are provided between the solenoid valve 24 and the hydraulic cylinder 27 on the extension path side and the contraction path side. Further, the pilot check valves 26a and 26b are connected to the opposite paths by pilot circuits 28a and 28b, respectively. The pilot circuit pilot pressure is set to be lower than the operating pressure of this route. Explaining the operation of the hydraulic circuit, the solenoid valve 24 is operated in the extending direction of the hydraulic cylinder 27 by exciting the solenoid A, for example. At this time, the pilot check valve 26a is released by the operating pressure in this path, and the hydraulic pressure is applied to the hydraulic cylinder 27. Further, since the pilot check valve 26b is set to be lower than the operating pressure, it is reliably released by the pressure applied by the pilot circuit 28b, and the hydraulic cylinder 27
Oil on the reduction side of the pilot check valve 26b
Is discharged through. When the hydraulic cylinder 27 has reached the desired position, set the operation switch to neutral, and
The check valve 27 is completely fixed by the check valves 26a and 26b. As a result, even when an external force is applied to the traveling body 7 from the lateral direction, such as when the vehicle travels or crosses a slope, the set position of the hydraulic cylinder 27 does not change.

FIG. 13 is a block diagram of the control circuit. As shown in FIG. 15, a high-speed position switch 30 is provided at the high-speed position of the speed change lever 29 on the operation panel. The switch 30 is
As shown in FIG. 13, it is connected to the aforementioned solenoid A via a timer relay. The operation of such a circuit will be described. When the speed change lever 29 is set to the high speed position, the high speed position switch 30 is turned on to excite the solenoid A for the timer relay set time. The hydraulic cylinder 27 is driven by the excitation of the solenoid A, and the space between the traveling bodies 6 and 7 is expanded to have the maximum width L ₁ . Here, the set time of the timer relay is set to be equal to or longer than the time required for the normal traveling body 7 to complete the movement, and the traveling body 7 is reliably moved.

With the above configuration, regardless of the operator's intention during high-speed traveling, the distance between the traveling bodies 6 and 7 is always maximized, and the traveling stability of a mobile agricultural machine equipped with a slide crawler is ensured. To be done.

FIG. 14 is a block diagram showing the connection relationship between the direction automatic control unit and the crawler slide control unit. The split mode selection switch 32 has two contacts that operate simultaneously.
Not only turning on and off of the automatic direction control unit, but also turning on and off of the crawler slide control unit. When the switch 32 is turned on, the automatic direction control is switched to the split mode, and the crawler switch control is performed on the traveling body 6,7.
It becomes the width reduction mode. Therefore, middle mode selection switch 32
When is turned on, the widths of the traveling bodies 6 and 7 are automatically reduced to the minimum width L ₂ , and the forgetting operation of the traveling body 7 in the middle division work is prevented, and the work efficiency is improved.

FIG. 15 is a front view of the machine body frame 13 and the engine 33.
The drive shaft 19a, which can freely expand and contract, extends from the mission 19 toward the movable-side traveling body 7 and expands and contracts as the traveling body 7 moves. A pipe 34 is connected to the shaft case of the drive shaft 19a and the pipe 3
The other end of 4 is connected to the probe gas pipe 35 of the engine 33. With this configuration, the suction action of the engine 33 always causes a negative pressure in the shaft case of the drive shaft 19a,
Even if the drive shaft 19a contracts and the volume decreases, the pressure in the shaft case does not rise and oil leakage does not occur. Further, since the air purified by the engine cleaner is sucked in, it is possible to prevent foreign matter such as dust from being sucked in.

<Effect of Invention> As a result of the present invention having the above-described configuration, the slide frame can be smoothly slid.

In particular, the rollers that roll from the bottom to the horizontal frame that is pivotally supported on the slide frame side enable the left and right slide movements while supporting the machine load of the movable side traveling frame to be smoother than the conventional sliding type. In addition, since the guide roller rollingly contacting the lateral movement guide surface prevents the play of the slide frame in the front-back direction, the axial line between the slide frame and the horizontal frame, which is caused during the slide, is prevented, and the smoothness is further improved. The sliding movement of the movable-side traveling body is ensured.

[Brief description of drawings]

FIG. 1 is a front view of a traveling frame, FIG. 2 is a plane sectional view of an airframe of a third embodiment, FIG. 3 is an overall plan view of a combine, FIG. 4 is a front view of a combine, and FIG. 5 is a traveling body. And a side view of the machine frame, FIG. 6 is an exploded perspective view of the traveling frame, FIG. 7 is an overall perspective view showing a mounting state of the machine frame and the traveling frame, and FIG. 8 is a lateral frame side cross section on the third embodiment side. FIG. 9 is a plane sectional view of a machine body frame of the second embodiment, FIG. 10 is a sectional view taken along the line AA in FIG. 9,
FIG. 11 is a sectional view taken along line BB, FIG. 12 is a hydraulic circuit diagram of a hydraulic cylinder composed of hydraulic cylinders, FIG. 13 is a block diagram of a control circuit, and FIG. 14 is a directional automatic control unit and a crawler slide control unit. Block diagram showing connection relationships,
Figure 15 is a front view of the airframe and engine. 1: Airframe, 6: Traveling body (movable side), 7: Traveling body (fixed) 9: Support frame, 12: Horizontal frame, 13: Airframe frame 14: Slide frame, 15: Roller, 16: Crawler 20,22: Guide rollers, 21, 23: Lateral movement guide surface 31: Travel frame

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Kenichi Fukada 667 Izuya-cho, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Inside Mitsubishi Agricultural Machinery Co., Ltd. (56) 64-64480 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A machine frame (13) for supporting the machine body (1) is provided on left and right travel frames (31) to which the machine bodies (6) and (7) are attached, and the machine frame (13) is installed horizontally in the machine body frame (13). A plurality of slide frames (14a) and (14b) horizontally fixed to one of the traveling frames (31) are housed below the plurality of horizontal frames (12a) and (12b) so as to be movable left and right. In the structure, the slide frames (14a) and (14b) are rotatably supported by a plurality of rollers (15) that support the load of the machine body by rolling contact with the horizontal frames (12a) and (12b) from the lower side. ), (12b) or slide frame (14
a) and (14b), rolling contact with one of the horizontal frames (12a) and (12b) and the horizontal movement guide surfaces (21) and (23) of the slide frames (14a) and (14b). A slide structure in a traveling body moving device provided with shafts of guide rollers (20) and (22) for guiding the left and right movements of the slide frames (14a) and (14b).