JPH0542064U - Farm vehicle - Google Patents

Abstract

(57) [Abstract] [Purpose] An agricultural work vehicle provided with a pair of left and right crawler traveling devices that can independently move up and down with respect to a vehicle body frame, using a tire traveling device as a means for speeding up road traveling. Therefore, I will try to obtain the structure for that from an inexpensive one. [Structure] A crawler traveling device A is provided with a tire type traveling device C that can be switched between a used state and a non-used state on the lateral outer side portion thereof. A drive mechanism 14 that can be connected to the drive mechanism 2 on the side of the crawler traveling device A when the crawler traveling device A is lowered to the maximum is installed inside the frame 12 to which the wheels 13 are attached.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an agricultural work vehicle such as a combine or a transport vehicle, and more particularly, to a lifting drive that includes a pair of left and right crawler traveling devices and individually moves the pair of left and right crawler traveling devices up and down with respect to a vehicle body frame. Agricultural work vehicle equipped with a mechanism.

[0002]

[Prior Art]

 Conventionally, in the above agricultural work vehicle, the rotation speed of the chlorator traveling device has been increased as a means for increasing the speed of road traveling.

[0003]

[Problems to be solved by the device]

 With the means for increasing the rotation speed of the crawler traveling device, there is a limit to the rotation speed in relation to the vibration generated by the crawler traveling device, so that speeding up of road traveling has not been so much done. Therefore, as disclosed in Japanese Utility Model Laid-Open No. 61-155274, it is conceivable to provide a tire type traveling device which can be switched between a used state and a non-used state on the lateral outer side portion of the crawler traveling device. In this case, an elevating drive mechanism for vertically moving the tire type traveling device must be provided in addition to an elevating and lowering drive mechanism for vertically moving the pair of left and right crawler traveling devices independently, which is disadvantageous in that the cost is high. .. The present invention uses a tire type traveling device as a means for speeding up road traveling, and an object thereof is to obtain a structure therefor from an inexpensive one.

[0004]

[Means for Solving the Problems]

 A characteristic configuration of the present invention for achieving the above object is to provide a tire type traveling device that can be switched between a used state and a non-used state on a lateral outer side portion of a pair of left and right crawler traveling devices. It has the following configurations (a) and (b). (A) In the tire type traveling device, a transmission device having a drive mechanism that can be connected to a drive mechanism on the crawler traveling device side is provided inside a mounting portion for a vehicle body frame and a frame in which a plurality of tire wheels are mounted. There is. (B) In the tire type traveling device, the drive mechanism on the tire type traveling device side can be connected to the drive mechanism on the crawler traveling device side while the crawler traveling device is maximally lowered, and The lower surface of the tire-type traveling device is configured to be located below the lower surface of the crawler traveling device in a state where the vehicle is raised.

[0005]

[Action]

 When traveling on the road, as shown by the phantom line in FIG. 1, the pair of left and right crawler traveling devices A is lowered to the maximum. Then, as shown in FIG. 4, the tire-type traveling device C in the non-use state is rotated downward around the front-rear axis Y, and as shown in FIG. The axle 2 and the input shaft 14 as the drive mechanism on the tire type traveling device side are connected to each other to switch to the use state. As shown in FIG. 4 from the phantom line in FIG. 1, when the pair of left and right crawler traveling devices A is raised, the tire type traveling device C contacts the ground, and the tire type traveling device C enables high speed traveling. Become.

[0006]

[Effect of the device]

 In this way, the lifting drive mechanism that independently moves the pair of left and right crawler traveling devices up and down is used instead of the jack-up device for mounting the tire-type traveling device. Type traveling device can be attached, and the cost can be reduced.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to a combine traveling device. As shown in FIG. 1, a pair of left and right crawler traveling devices A and A that are individually movable up and down with respect to the body frame 1 are disposed below the body frame 1 on which a threshing device (not shown) is mounted. ing. As shown in FIGS. 1 and 3, the crawler traveling device A includes a drive sprocket 3 mounted on an axle 2 of a traveling mission case M, a passive sprocket 5 mounted on a track frame 4, and a plurality of grounded wheels. It is composed of a crawler belt 7 wound around six. The track frame 4 of the crawler traveling device A includes a pair of front and rear L-shaped swing links 8a and 8b pivotally supported on the body frame 1 so as to be swingable around a horizontal axis X with respect to the body frame 1. It is composed of a rod 9 for connecting the upper ends of the pair of L-shaped swing links 8a and 8b to each other in an interlocking manner, and a hydraulic cylinder 10 laid across the upper end of the swing link 8b on the rear side of the vehicle body and the vehicle body frame 1. The lifting drive mechanism B is configured to move vertically. The pair of left and right crawler traveling devices A and A are, as is well known in the art, based on the detection result of a rolling sensor (not shown) provided on the machine side, via a control device (not shown), the hydraulic cylinder. 10 electromagnetic valves (not shown) are opened / closed to automatically control the vehicle body frame 1 in a horizontal posture with respect to the ground, and the rolling control is manually or automatically performed as well known in the art. It is configured to be switchable.

As shown in FIG. 4, the pair of left and right crawler traveling devices A, A swings between a used state and a non-used state as they swing around the front-rear axis Y, respectively. Switchable tire type traveling devices C, C are installed. As shown in FIG. 2, the tire-type traveling device C also serves as a transmission case that is pivotally supported about the front-rear axis Y by way of bosses 11, 11 as mounting portions with respect to the vehicle body frame 1. From a frame 12, a plurality of tire wheels 13 mounted on the frame 12, and a chain transmission 15 provided with an axle 2 as a drive mechanism on the side of the crawler traveling device and an input shaft 14 as a drive mechanism capable of engaging with each other. It is configured. As shown in FIG. 4, when the tire type traveling device C is rotated downward, the tire type traveling device C is fixedly maintained to the bracket 17A on the vehicle body frame 1 side via the lock bolt 16 provided on the wheel mounting frame 12. In addition, when it is rotated upward, it is fixed and maintained on the protruding bracket 17B on the vehicle body frame 1 side. When the tire type traveling device C is used, after the crawler traveling device A is lowered to the maximum extent, the tire type traveling device C is rotated around the front-rear axis Y to switch to the use posture. The axle 2 on the traveling device C side and the input shaft 14 on the tire traveling device C side are occlusally connected, and after the wheel mounting frame 12 is fixedly connected to the vehicle body frame 1 via the lock bolt 16, the crawler traveling device A is connected. When the tire-type traveling device C is raised, the lower surface of the tire-type traveling device C is located below the lower surface of the crawler traveling device A, the tire-type traveling device C contacts the ground, and the tire-type traveling device C enables high-speed traveling.

[Other Embodiments] When switching the tire type traveling device C between the use state and the non-use state, as shown in FIG. In such a case, the crawler traveling device A is lowered as much as possible to connect the tire wheel mounting frame 12 to the vehicle body frame 1 with bolts 18 and 19, and then the crawler traveling device A is raised to move the tire type traveling device C. It will be grounded.

Further, the axle 2 on the crawler traveling device side and the input shaft 14 on the tire traveling device side may be occlusably coupled via a meshing clutch so that the power can be intermittently connected without directly occlusively coupling. ..

Further, in obtaining the driving force from the crawler traveling device side, as shown in FIG. 6, as the crawler belt 7 rotates, the driving force can be obtained from the grounding roller 6 which is rotationally driven. Good. In such a case, the crawler traveling device A is lowered to the maximum extent, the simple lifting rods 20 and 20 are inserted in the lower portion of the vehicle body frame 1, and then the crawler traveling device A is raised to move the tire type traveling device C. After mounting and mounting the crawler traveling device A, the crawler traveling device A is again lowered to the maximum extent to remove the gripping rods 20 and 20, and then the crawler traveling device A is raised again to ground the tire type traveling device C. Become.

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

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

FIG. 2 is a side view of a tire type traveling device.

FIG. 3 is a schematic view showing a transmission structure of a tire type traveling device.

FIG. 4 is a rear view showing the mounting structure of the tire type traveling device.

FIG. 5 is a rear view showing another embodiment.

FIG. 6 is a side view showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body frame 2 Crawler traveling device side drive mechanism 11 Attachment part 12 Frame 13 Tire wheel 14 Tire type traveling device side drive mechanism 15 Transmission device A Crawler traveling device B Lifting drive mechanism C Tire type traveling device

Claims (1)

[Scope of utility model registration request] 1. A pair of left and right crawler traveling devices (A),
(A), and a lifting drive mechanism (B), (B) for vertically moving the pair of left and right crawler traveling devices (A), (A) independently of the vehicle body frame (1). In an agricultural work vehicle, tire-type traveling devices (C) and (C) that can be switched between a used state and a non-used state are provided on the lateral outer sides of the pair of left and right crawler traveling devices (A) and (A),
The tire type traveling devices (C) and (C) have the following (a),
An agricultural work vehicle having the configuration of (b). (A) The tire type traveling device (C) includes a mounting portion (11) for a vehicle body frame (1) and a plurality of tire wheels (1).
A transmission device (15) having a drive mechanism (14) connectable to the drive mechanism (2) on the side of the crawler traveling device (A) is provided inside a frame (12) equipped with (3). (B) In the tire type traveling device (C), when the crawler traveling device (A) is maximally lowered, the drive mechanism (14) on the tire type traveling device (C) side is located on the crawler traveling device (A) side. It is connectable to the drive mechanism (2) and the lower surface of the tire traveling device (C) is located below the lower surface of the crawler traveling device (A) when the crawler traveling device (A) is raised. It is configured.