JPH0352841Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is an attachment work vehicle that can perform attachment work such as earthwork, transportation, snow removal, etc. using a tracked vehicle such as a combine harvester or an agricultural transport vehicle. Regarding.

[Conventional technology]

Attachment work, such as earthworks, transportation, or snow removal, is sometimes attached to a tracked vehicle to perform attachment work.

For example, various methods are being considered to utilize combine harvesters, which have extremely low operating rates throughout the year, outside of the harvest season, and to reuse used combine harvesters whose reaping and threshing sections are no longer usable. As a means of achieving this, for example, as disclosed in Japanese Utility Model Application No. 62-164732, it has been proposed to attach a snow removal grader as an attachment using the divider attachment part of the reaping part installed at the front of the combine harvester. has been done.

[The problem that the idea attempts to solve]

However, the reaping section of a combine does not have enough strength to withstand a large load from the front, and when removing snow by attaching a grade instead of a divider as described above, the amount of cutting is large. If a large load is applied, such as by removing compacted and hardened snow roots, various parts of the reaping section are likely to be deformed or damaged, and in reality, only light-load snow removal work can be performed.

Therefore, as a means to perform high-load snow removal work and land leveling work without such strength problems, we have developed a system that connects the work equipment from the outside of the chassis to the track frame of the crawler traveling equipment installed on the left and right sides of the combine chassis. In some cases, measures such as attaching a frame are being taken.

However, in this method, the working device connection structure is complicated and large-scale, resulting in high costs, and it is difficult for one person to work alone as it takes time to attach and detach the working device.

In addition, since the frame for connecting the working equipment is provided on the outside of the chassis, the width of the vehicle body is considerably larger than the outer width of the crawler, making it difficult to move into narrow spaces and turn the vehicle body.

This invention was made in view of the above-mentioned circumstances, and allows the attachment working device to be relatively easily and firmly connected to the chassis of a tracked vehicle, without increasing the width of the vehicle body. The purpose of the present invention is to provide an attachment work vehicle for earthwork, transportation, snow removal, etc. using a tracked vehicle, which can be equipped with a tracked vehicle.

[Means to solve the problem]

The characteristic structure of the present invention to achieve the above purpose is as follows:
At the front of the chassis of a tracked vehicle, an axle case 1 protrudes left and right from a transmission case 13.
4, a connector 30, 3 surrounding the axle case 14;
A hitch 17 is detachably fixed by means 3, and attachments 12 and 35 for earthwork, transportation, snow removal, etc. are attached to the hitch 17.

[Effect]

According to the above structure, the hitch is fixed to the left and right axle cases of the transmission case from the front of the chassis of the tracked vehicle by enclosing the coupling tool, and any attachment working device is attached to the hitch. In this case, all operations of the coupling can be performed at the front of the chassis, and there is no need to go around the outside of the vehicle body. In addition, the hitch and connector are left and right claws.
It can be installed centrally inside the traveling device.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the drawings.

The attachment work vehicle for earthwork, transportation, snow removal, etc. according to the embodiment of this invention uses the chassis of a combine harvester as a tracked vehicle,
The overall structure of the combine harvester is shown in FIG.
This combine is equipped with a threshing device 1, a grain hopper 2, a control unit 4 with a driver's seat 3, an engine under the seat (not shown), etc., and a chassis equipped with a pair of left and right crawler running devices 5. A reaping section 9 equipped with a moving device 6, a cutting blade 7, a reaped grain culm conveying device 8, etc. is connected to the front part via a fulcrum 10 so that it can be moved up and down by a single-acting hydraulic cylinder 11. A fulcrum bracket 10a at the upper end of the fulcrum stand 10 is constructed in the form of a hinge so that it can be freely opened and closed, and by releasing this fulcrum bracket 10a, it is possible to separate the reaping section 9 forward.

FIG. 1 shows an example of an attachment work vehicle configured using the chassis of a combine harvester with the above configuration, in which a grader 12 for snow removal or ground leveling, which is an example of an attachment work device, is attached after the reaping section 9 is removed. Indicates the case where
The combine harvester traveling vehicle body used here is mainly a combine harvester that is not in operation outside the harvest season, or a used combine harvester.

The detailed mounting structure of the grader 12 is shown in FIGS. 2 and 3.

There are left and right claws on the front of the combine chassis.
A transmission case 13 for distributing and transmitting speed change power to the transmission case 5 is fixedly installed, and left and right axles 15 are inserted through round pipe-shaped axle cases 14 protruding from the left and right sides of the transmission case 13, respectively. ,
A drive sprocket 16 for each crawler traveling device 5 is attached to the tip of each axle 15.

Hitches 17 for attaching the grader 12 are connected to the front portions of the left and right axle cases 14. This hitch 17 is a horizontal square pipe 17.
Yoke-shaped connecting arms 17b that open forward are welded and fixed to both ends of the axle in a rearwardly protruding state, and the rear end of each connecting arm 17b is connected to the axle case 14.
axle case 1.
U bolt (connector) 18 engaged with 4 from the rear
The hitch 17 is fixed to the axle case 14 by inserting the front end into the rear end of the connecting arm 17b and tightening it with a nut 19.
Further, a pair of left and right vertical plates 17c are protruded rearward from the square pipe 17a of the hitch 17, and the rear end sides of each vertical plate 17c are brought into contact with the stepped portion 20 of the mission case 13, so that the hitch 17 can be positioned horizontally. Rotation around the axle case 14 is prevented.

A pair of left and right support arms 21 extending rearward from the grader 12 are inserted into the front openings of the left and right connecting arms 17b of the hitch 17 connected to the axle case 14 in this way. A connecting pin 22, which is pivotally connected so as to be vertically swingable, is inserted into the square pipe 17a through a pin hole 23 formed in the connecting arm 17b. The connecting pin 22 is welded to the caul plate 24, and the caul plate 24 is connected to the connecting arm 17.
By bolting to b, the connecting pin 22 is prevented from coming off.

Further, a mast 25 is erected on the support arm 21 of the grader 12, and this mast 25 and the hydraulic cylinder 11 provided on the combine traveling vehicle body for raising and lowering the reaping section 9 are connected to each other as shown in FIG. As shown in FIG. The grader 12 is designed to descend under its own weight as the oil drain shortening operation of the grader 11 is performed. It goes without saying that such an operation for raising and lowering the grader 12 is performed by a hydraulic lever 28 for raising and lowering the reaping part, which is provided in the control part 4.

In addition to the grader with a constant face angle, an angle grader with a face angle that can be changed manually or hydraulically may be used as the grader.

Another embodiment of the means for connecting the hitch 17 to the axle case 14 is shown in FIGS. 4 and 5.

In the example shown in FIG.
A bolt 31 is used to tighten and fix the bolt 31 to the rear end of the connecting arm 17b of No. 7, and a stay 32 pivotably extends rearward from the hitch 17 to prevent the hitch 17 from rotating relative to the axle case 14. It is configured to be coupled to a suitable fixed part of the vehicle body.

In the example shown in FIG. 5, the connecting arm 17b of the hitch 17 is used as a connecting member surrounding the axle case 14.
A downward U-shaped metal fitting 33 welded and fixed to the metal fitting 33 and a connecting pin 34 penetrated through the opening of the metal fitting 33 are used, and a stay 32 similar to the previous example extends from the hitch 17.

FIG. 6 shows a case where a shovel loader 35 is connected as another example of the attachment working device.

Here, a hitch 17 consisting of a square pipe 17a with connecting arms 17b attached to both ends is connected to a U-bolt 18.
A fulcrum stand 10 provided on the traveling vehicle body is connected to the left and right axle cases 14 using a pipe 17e, and a stay 17d extends rearward from each connecting arm 17b and is installed across the rear ends of the left and right stays 17d. The hitch 17 is firmly fixed by being held and supported via the fulcrum bracket 10a.
The vertical frame 36 of the shovel loader 35 is connected to a bracket 17f protruding from the front surface of the square pipe 17a of the hitch 17 with a pin so that the height thereof can be adjusted.

Note that the shovel loader 36 has a lift cylinder 3.
It is composed of an arm 38 that can be raised and lowered by an arm 38, and a wide bucket 40 that is attached to the tip of the arm and rotated by a tilt cylinder 39. By attaching a lifting hook arm, it can also be used to transport compost, rice, wheat straw, fertilizer bags, soil, long materials, etc.

FIG. 8 shows a different embodiment from the above, in which an agricultural dump truck shown in FIG. 9 is used instead of a combine harvester as the tracked vehicle. In the other embodiment shown in FIG. 8, the grader 12 is connected to the axle case 14 by the coupling tool 30 and the hitch 17 using the same structure as in FIGS. 1 to 3 explained in the above embodiment.
It was installed through the And a dump cylinder 51 of a loading platform 50 of an agricultural dump type transport vehicle.
The grader 12 is driven to be adjusted up and down through.

Incidentally, as a modification of the other embodiment shown in FIG. 8,
It is also conceivable to attach a shovel loader 35 to the axle case 14 of an agricultural dump transport vehicle in place of the grader 12 with a structure similar to that shown in FIG.

[Effect of idea]

As explained above, the attachment work vehicle for earthwork, transportation, snow removal, etc. using a tracked vehicle of the present invention exhibits the following effects.

(1) Since the left and right axle cases of the transmission case are used to connect and fix the hitches for attaching the attachment working device to the front of the chassis of a tracked vehicle, the strength of the axle case, which is originally strong, is increased. It has become possible to make effective use of this to connect high-load and high-load working devices to construct an attachment work vehicle that can handle a wide range of work.

(2) Since the hitch is supported by the axle case, the structure for connecting the attachment working device will be located between the left and right crawler traveling devices, and the structure for connecting the attachment working device will be located between the left and right crawler traveling devices. Therefore, the width of the vehicle body does not increase, and it can move freely to any location where a tracked vehicle such as a combine harvester or agricultural truck can move, and the turning space is equal to or greater than that of a tracked vehicle. I was able to do the following.

(3) Since the attachment and detachment of the hitch and attachment work device are concentrated at the front of the chassis, there is no need to go around to the left and right outside of the vehicle body, making it easy for one person to do the work.

(4) Since the connecting structure does not use the track frame of the left and right crawler traveling devices, and does not require any processing on the axle case, the hitch part is small and has a simple structure, making it easy to manufacture at low cost.

[Brief explanation of drawings]

The drawings show an embodiment of an attachment work vehicle for earthwork, transportation, snow removal, etc. using a tracked vehicle according to the present invention, and Fig. 1 shows an overall side view of an agricultural combine harvester with a grader as an example of an attachment work device. 2 is a partially cutaway plan view of the connecting structure, FIG. 3 is a partially cutaway side view thereof, FIGS. 4 and 5 are side views showing another embodiment of the hitch connecting means, and FIG. FIG. 6 is an overall side view of a shovel loader as another example of an attachment working device attached to an agricultural combine harvester. Moreover, FIG. 7 is an overall side view of the combine harvester. FIG. 8 is an overall side view showing another embodiment of the present invention in which a grader is attached to an agricultural dump truck, and FIG. 9 is a side view of the agricultural dump truck. 13...Mission case, 14...Axle case, 17...Hitsuchi, 18...U bolt (coupling tool), 30, 33...Metal fitting (coupling tool), 12...Grader (attachment working device), 35 ...Shovel loader (attachment work device).

Claims (1)

[Scope of utility model registration request] At the front of the chassis of a tracked vehicle, an axle case 14 protruding left and right from the transmission case 13 is provided with a coupling 30 surrounding the axle case 14,
Earthwork/transportation or snow removal using a tracked vehicle, characterized in that a hitch 17 is removably fixed by means 33, and attachment working devices 12, 35 for earthwork transportation, snow removal, etc. are attached to the hitch 17. Attachment work vehicles such as