JPS5858044B2 - Tractor with power take-off frame for various working machines - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tractor with a power take-off machine frame for various types of work equipment, and the tractor can be easily equipped with various types of work equipment such as a front-rear vibrating subsoiler and a treasurer in addition to a general tilling device. It is an object of the present invention to make it possible to easily transmit one or both of rotational power and vibrational power from a tractor to a working machine, and to reduce the reaction force of the vibrational force propagated to the tractor body.

When a longitudinally vibrating work machine such as a longitudinally vibrating subsoiler or a trencher is attached to the rear of a tractor via a three-point link mechanism, conventionally, the vibrating device is directly attached to the rear of the tractor body.

For this reason, in the past, relatively large vibration devices were
The vibration device must be installed on the PTO shaft at the bottom of the rear of the tractor body and the top link mounting bracket above it in a relatively narrow space sandwiched between both rear wheels of the tractor, so it is not easy to install the vibration device. However, it was difficult to attach the above-mentioned longitudinal vibration type working machine to a tractor.

Furthermore, as described above, when the vibration device is directly attached to the rear surface of the tractor body, the reaction force of the vibration force is directly transmitted to the tractor body, which is not desirable.

The present invention solves the above problem, and is characterized in that a power take-off frame is attached to the tractor body via a three-point link mechanism, and the power take-off frame is directly attached to the three-point link mechanism. A mounting part for attaching and detaching a working machine that can be attached to the machine; a forward-protruding input part to which power is transmitted from the tractor side;
It is equipped with a rearwardly protruding output part that interlocks and transmits power to the work machine side, and a vibration member that is pivoted in the widthwise center of the upper part of the power take-off machine frame in the mounting part so as to be able to swing freely around a horizontal axis. one of the input section and the output section and the vibration member are releasably interlocked by an interlocking member that vibrates the working machine back and forth by swinging the vibration member, and when the interlocking by the interlocking member is released, the vibration member is connected. The point is that it has a means for fixing it.

A specific example shown in the drawings will be explained below.

In the examples shown in FIGS. 1 and 3, a tilling roller device is attached to the rear of the lifting link mechanism at the rear of the tractor, and a hydraulic device 2 equipped with lift arms 1 on the left and right is installed on the upper rear side of the tractor body T. A lift rod 4 is connected between the rear end of the device 2 and the lower link 3, and a top link 6 is extendably protruded from a mounting base 5 protruding from the rear end of the fuselage T. These components constitute an elevating link mechanism also known as a three-point link.

Reference numeral A denotes a power take-off machine frame connected to the rear end of the elevating link mechanism, specifically, a pair of left and right bent side frames 7. 7
The rear end of the top link 6 is pivotally connected between the upper ends of both frames 7.7, and at the lower end of the frame 7.7, a rectangular cylinder-shaped receiving tube 8 is connected in the horizontal axis direction. They are fixed facing each other.

Reference numeral 9 denotes a support shaft which is fitted horizontally through both receiving tubes 8, 8;
A connecting support tube 11 with a lower end bracket 10 is fitted to the protruding portions at both ends of the coaxial shaft 9, and a lower link 3 is connected to the rear end of the lower link 3 on both sides of the outermost end. A link pin 12 is provided protrudingly.

A connecting plate 1 is provided between the support shaft 9 and both side frames 7.7.
A pair of left and right vertical frames 14゜14 on which 3 is installed are fixed at both ends, and a plurality of bolt holes 15 are formed in a vertical line on both sides of both frames 14゜140. A receiving plate 17 with a bearing case 16 is fastened with bolts 18 so as to be adjustable up and down.

Inside the bearing case 16, a spline-shaped relay shaft 20 is provided with an input part 20a projecting forward from the power take-off machine frame A and an output part 20 projecting rearward through a bearing 19.
b before and after.

The input section 20a is connected to a PTO shaft 60 of the tractor via a transmission shaft 21 having a universal joint at both ends, and the output section 20b has an input shaft 23 protruding from a gear box 22 on the tilling device R side. They are connected via a coupling 24.

On the other hand, as is well known, the tilling device R can be of either side or center drive type, with the tilling claws 25, side plates 26,
Link brackets 29, which constitute the side cover 27, etc., and project from the support tubes 28 on both sides of the gear pock 322 are pivotally connected to the lower end bracket 10.10, and the top mast 30 is erected on the gear box 22. A rear two-wheel support 32 with a plowing depth adjustment mechanism 31 is connected to the rear of the mast 30 and extends rearward, and the rear two wheels 33 are freely rotated thereon.

The top mast 30 is connected to the rear end of a swinging piece 34 that is centrally supported between the upper ends of both side frames 7.7, and the position of the swinging piece 34 is vertically arranged through the side frame 7.7. The receiving hole 35 can be raised and lowered using a pin 36.

The swing piece 34 is exemplified as a vibration member, and
The upper part of the center in the width direction of the power take-off frame A is capable of swinging around a horizontal axis.

At the front end of this swinging piece 34, there is a nut 37.37 in the middle.
An interlocking member formed by connecting an upper rod 38 and a lower rod 39 with a joint 40 is suspended, and the screw at the lower end of the lower rod 39 is connected to a locking plate protruding from the front upper end of the receiving plate 17. 41 and is fixed with nuts 37 and 37, so that the swinging piece 34 does not swing, and the swinging piece 34 and the pair of left and right brackets 1
As shown in FIG. 9, reference numeral 0 denotes a mounting portion for mounting a tillage device R that can be directly mounted on the three-point link mechanism.

On the other hand, the second option is the subsoiler 8 with crushing plow 43 as indicated.
When installing a towing unit that can freely vibrate vertically, use subsoiler 8.
The lower front end of the crushing plow 43 is connected to the lower end bracket 10, and the upper end is connected to the rear end of the swinging piece 34. In this case, in order to vibrate the crushing plow 43 back and forth, a drive means configured in the same manner is used in the rotary device. That's what I do.

The means includes the input section 20a as shown in FIGS. 4 and 5.
An eccentric cam 44 is integrally provided at the base of the cam 44.
A ring 46 is rotatably attached to the outer periphery of the ring 46 via a bearing 45, and a threaded cylinder 4 protrudes from the outer periphery of the ring 46.
The lower rod 39 is screwed to and connected to the lower rod 39. At this time, the lower rod 39 is raised and lowered by a cam 44 to swing the rear end of the swinging piece 34 up and down, and the subsoiler 8 is vibrated back and forth.

Here, the lower rod 39 moves up and down through the hole 42 of the locking plate 41.

Furthermore, in order to mount the trencher B as shown in FIG.
An input shaft 23 is protruded from the front part of the gearbox 2 and spline-coupled to the relay shaft 20 via a coupling 24, and link brackets 29 provided oppositely on both sides of the gearbox 22 are connected to the lower end bracket 10. Along with gearbox 2
A top mast 30 erected above 2 is connected to a swinging piece 34 in a locked position.

When connecting and driving these various types of work equipment as desired, the connection position and power extraction method are always a problem, and furthermore, mere power extraction can only extract rotational power, and in this case, according to the above configuration, for example, the When replacing a different tilling rotary device R, connect the lower ends of the same device R, and since the height of the top mast 30 is different, adjust the swinging piece 34 up and down, or adjust the lower rod 39 up and down. The swing piece 34 can be connected in a state that matches the height of the mast 30, and the remaining power extraction procedure is to adjust the receiving plate 17 up and down relative to the input shaft 23 of different height, and then The relay shaft 20 and the input shaft 23 can be connected at the same height via the ring 24.

This also applies when replacing the tiller R and the trencher B.

Further, when the subsoiler 8 does not require rotation but requires vibration, it can be connected by simply attaching the subsoiler 8 to the swinging piece 34 that swings by the cam 44 of the relay shaft 20.

The cam 44 is connected to the relay shaft 20, which corresponds to the rear part of the machine frame A.
In this case, as shown in the examples shown in FIGS. 7 and 8, a mounting plate 49 is provided protruding from the upper end of the rear part of the side frame 7.7, and a through hole of this mounting plate is provided. An interlocking link 51 exemplified as a T-shaped vibration member may be pivotally connected to 50 so that the subsoiler S can vibrate back and forth via the link 51.

In this case, the rod 52, which is illustrated as an interlocking member that connects the cam 44 and the interlocking link 51, can be removed from the threaded tube 47, and a connecting bracket 52 that protrudes from the rod 52 is attached.
If it is fixed to the mounting plate 49 in a locking manner, for example, other cultivating equipment R or trencher B will only receive rotational force, and the vibration system will be locked, and the system will be fixed without vibration. A shaped subsoiler 8 can also be constructed.

The present invention is as described above, and includes a power take-off machine frame mounted on a tractor body via a three-point link mechanism, a mounting part for removably mounting a work implement on the power take-off machine frame, and a mounting part for attaching and detaching a work implement to the power take-off machine frame, and a mounting part for attaching and detaching a working machine to the power take-off machine frame, and a power take-off machine frame for attaching the power take-off machine frame to the tractor body through a three-point link mechanism. It is equipped with a front-protruding input section that transmits power, and an output section that works in conjunction with the input section to transmit power to the work machine. A vibration member that is pivotably supported is provided, and one of the input section and the output section is releasably interlocked with the vibration member by an interlocking member that vibrates the working machine back and forth by swinging the vibration member. However, since it is equipped with a means for fixing the vibrating member when the interlocking is released by the interlocking member, it can be used not only for working machines such as tillers that do not require vibration power, but also for various types of work equipment that require vibration power, such as longitudinally vibrating subsoilers and trenchers. Work equipment can also be easily attached to the power take-off machine frame, so there is no need to perform the difficult installation work of vibration devices as in the past, and various work machines can be easily mounted on the tractor, and work can be done from the power take-off machine frame. One or both of rotational power and vibrational power can be transmitted to the machine.

Furthermore, since the power take-off frame is attached to the tractor body via the three-point link mechanism, the reaction force of the vibration force propagated to the tractor body is small.

Furthermore, although various types of work equipment can be mounted on the power take-off machine frame as described above, the mounting part is designed to mount a work machine that can be directly mounted on the three-point link mechanism, and the output part projecting rearward from the power take-off machine frame, the mounting portion is a three-point link mechanism for mounting the work machine, and
Tractor PT for transmitting power from the output section to the work machine
Since it is installed in a format that corresponds to the O-axis, it is possible to use the same type of work equipment as before, that is, a work equipment that is directly attached to the tractor body via a three-point link mechanism, as the work equipment that is attached to the power take-off machine frame. There is no need to go to the trouble of separately manufacturing a dedicated working machine.

[Brief explanation of drawings]

Fig. 1 is a side external view showing an example in which a tilling device is directly connected to the power take-off machine frame, Fig. 2 is a side sectional view showing a subsoiler connected so that it can freely vibrate, and Fig. 3 is a locking of the lower rod shown in Fig. 1. Figure 4 is an enlarged view showing the state in which the
The figure is a partially cutaway front view showing a machine frame used as a subsoiler, Figure 6 is a side external view showing an example in which a trencher is directly connected to the machine frame, and Figure 7 is a subsoiler with power taken from the rear of the machine frame. FIG. 9 is a side sectional view of a single machine frame, FIG. 9 is a side view showing a tilling device directly attached to the three-point link mechanism, and FIG. 8 is a vertical sectional view of the main part thereof. 20... Relay shaft, T... Tractor body, L... Lifting link mechanism, A... Power take-off machine frame, R... Beating tillage device, S...Subsoiler-1 B...Trencher

Claims (1)

[Claims] 1. A power take-off frame is attached to the tractor body via a three-point link mechanism, and the power take-off frame is provided with a mounting part that removably attaches a work implement that can be directly attached to the three-point link mechanism, and A front-protruding input part to which power is transmitted, and a rear-protruding output part to which power is transmitted to the work machine side in conjunction with the input part. The vibration member is pivotally supported around a horizontal axis, and one of the input section and the output section is connected to the vibration member by an interlocking member that vibrates the work machine back and forth by swinging the vibration member. A tractor with a power take-off frame for various working machines, characterized in that the tractor is releasably interlocked and includes means for fixing a vibrating member when the interlocking is released by the interlocking member.