JPS6299268A - Tractor with working machine - Google Patents

Abstract

PURPOSE:To enable facilitation of running on a rough ground surface, by a method wherein the lug of a front wheel is formed in a pattern in that, during forwarding, earth is embraced to provide a traction force, and the lug of a rear wheel is formed in a pattern in that, during reversing, a traction force is provided. CONSTITUTION:A tractor 1 has a 2-axle 4-wheel type running device comprising a pair of right and front wheels 2 and a pair of right and left rear wheels 3. The front wheels 2 and the rear wheels 3 both have lugs 2A and 3A, and all the lugs 2A and 3A form an oblique pattern. The lug 2A of the front wheel is formed in a pattern in that, during forwarding, earth is embraced to provide a traction force, and the lug 3A is formed in a pattern in that, during reversing, earth is embraced to provide a traction force. The front wheels and the rear wheels both have the same wheel diameter, and all of the wheels are mounted pivotably around a king pin axis.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tractor with a work implement used for agricultural work, light civil engineering work, etc.

(Prior Art) A tractor is a traveling power vehicle, and is usually used for various operations such as plowing, excavation, harvesting, etc., with a working machine attached to either the rear or the front so that it can be raised and lowered.

In addition, there is a work equipment mounted on the front and rear of a tractor that can be raised and lowered freely, as disclosed in Japanese Utility Model Application Publication No. 163002/1983. Each vehicle is equipped with a backhoe at the rear.

(Problems to be Solved by the Invention) Conventional tractors with work equipment, such as those described in the above-mentioned publications, are equipped with work equipment at the front and rear parts, but when making a turn, the tractor Since it is necessary to have a large turning radius, the unworked area, that is, the headland, becomes large, and the headland must be worked by hand, resulting in poor work efficiency. Ta.

In addition, tractors need to obtain a large tractive force with their drive wheels, and for this reason, the weight of the vehicle is added to the drive wheels or auxiliary weights are attached to the drive wheels. With the latter method, the installation work becomes troublesome.

(Means for Solving the Problems) The present invention provides a first feature in which a large tractive force is obtained by associating working machines mounted at the front and rear of a tractor with wheel lug patterns in a traveling device.
．． The second purpose is to obtain a large traction force by associating the work implement with the drive wheels of the travel device, and the third purpose is to connect the work implement and the steering of the travel device. This eliminates the need for the tractor to turn when changing directions for work, and also makes it possible to reduce the size of the headland.

That is, in order to achieve the first object, in the present invention, in a tractor having a two-axle and four-wheel type traveling device, in which a work implement is mounted so as to be able to move up and down, the same type of work implement is installed at the front and rear of the tractor body 6, respectively. The working machines 27 and 28 are equipped so that they can be raised and lowered freely, and when one of the working machines 27 and 28 is lowered to the ground and in a working position, the other is lifted off the ground and placed in a non-working position. Reference numeral 4 denotes a diagonal lug in which at least the wheel 2 or 3 on the side on which the working machine 27 or 28 is lifted is driven, and the lug 2A or 38 of the driven wheel 2 or 3 is oriented to obtain traction force. In order to achieve the second purpose, a working machine is attached to a tractor having a two-axle and four-wheel type traveling device so as to be able to rise and fall freely, and the tractor body 6 is Same type of work equipment at front and rear 27°28
The working machines 27 and 28 are equipped with two-axle, four-wheel-type traveling devices that can be raised and lowered freely, and one of the working machines 27 and 28 is lowered to the ground and in a working position, while the other is lifted off the ground and is in a non-working position. 4 is characterized in that the wheel 2 or 3 on the side on which the working machine 27, 28 is lifted is driven, and the other wheel 3 or 2 is a driven wheel, and the third object is In order to achieve this, a working machine is mounted on a tractor having a two-axle and four-wheel type traveling device so that it can be raised and lowered, and similar working machines 27 and 28 are installed at the front and rear of the tractor body 6, respectively, so that they can be raised and lowered. The work [
27 and 28, one is lowered to the ground and in a working position, while the other is lifted from the ground and is in a non-working position, and both the front wheels 2 and rear wheels 3 of the two-axle four-wheel type traveling device 4 are moved in the same direction. It is characterized by a club steering that changes direction and moves forward and backward diagonally.

(Function) Function 1 In FIG. 1, in this example, the front working machine 27 is lifted up, the rear working machine 28 is lowered to the ground, and plowing work is performed toward the left in the figure.

In this case, at least the front wheels 2 are driven (the rear wheels 3 may also be driven), and the weight of the front working machine 27 is added to the front wheels 2 to obtain a large tractive force.

Furthermore, since the lugs 2A of the front wheels 2 have a diagonal lug pattern as shown in FIG. 3, they trap dirt and obtain a large traction force.

Effect 2: The rear wheel 3 receives substantially the same effect as the above-mentioned effect 1 (excluding the effect of the lugs mentioned above), but the rear wheel 3 is treated as a driven wheel. In addition, although the tractor is driven forward in FIG. 1, when driving backward (to the right in FIG. 1), the clutch 37 in the drive system to the front wheels 2 is disengaged and the rear wheels 3 are driven. At the same time, the front working machine 27 is lowered to the ground and the rear working machine 28 is lifted up.

Effect 3: When the work progresses in the state shown in Figure 1 and comes to the headland of the field,
By steering the front wheels 2 and rear wheels 3 to move forward and backward as shown by chain lines in FIG. 2, the tractor can be moved to the next work area in seconds without turning.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

In the figure, the symbol (■) indicates a tractor, which is equipped with a two-axle, four-wheel type traveling device 4 consisting of a pair of left and right front wheels 2 and a pair of left and right rear wheels 3.

Reference numeral 5 denotes a mounted engine, which is mounted on the front side of the tractor body 6 and covered with a bonnet 7.

The rotational power of the engine 5 is transmitted to the first transmission section 9 through the connection and disconnection of the main clutch 8, and from the first transmission section 9, the driving system transmission section 12 and the PTO transmission section 13 are transmitted through propeller shafts 10 and 11, respectively. It is possible to transmit the signal to the second transmission section 14 having the following.

Both the front wheels 2 and the rear wheels 3 have lugs 2A and 3A, and both lugs 2A and 3A have a diagonal lug pattern, and as shown in Fig. 3, the lugs 2A hold the soil when the vehicle is driven forward. This is a pattern in which the lug 3A generates traction force by pulling in dirt and discharging it when the vehicle is driven in reverse.Here, lug 2A, 3
The directions of A are reversed.

Both the front wheel 2 and the rear wheel 3 have the same wheel diameter, and both are provided at both ends of the wheels so that they can rotate freely around the kingpin axis, and knuckle arms 15 and 16 are provided on the left and right kingpin axis sides, respectively. The left and right knuckle arms 15.16 each have telescopic cylinders 18.19.
They are connected by tie rods 20, 21 having . Note that each cylinder 18, 19 is of a double acting type.

Reference numeral 22 denotes a steering device, which includes at least a steering handle 23 and a driver's seat 24, which are provided on the tractor body 6 at a distance from the front and back, and also includes various clutch operation levers and work equipment lifting/lowering, although not shown. It is equipped with various levers such as a hydraulic control lever and a gear shift lever.

The steering handle 23 controls the telescopic cylinders 18 and 19, respectively, and as shown schematically in FIG.
It has control units 25 and 26 to enable power steering.

Both the front wheels 2 and the rear wheels 3 can be independently steered around the king pin (including straight forward movement), and both the front wheels 2 and the rear wheels 3 can be turned in the same direction as shown by the chain lines in Fig. 2. It constitutes a club steering that moves forward and backward diagonally.

Reference numeral 27 indicates a front working machine, and 28 indicates a rear working machine, and in this example, both of them are the same type of working machine as exemplified by the rotary tiller, and both have power receiving shafts 27^ and 28A, and have a tilling section. 27B and 28B can be driven from above the tractor body 6.

In addition, it is desirable that each of the tilling parts 27[1, 28B can be freely switched between forward and reverse directions.

The front and rear working machines 27 and 28 are mounted on the tractor body 6 in this example by mounting mechanisms 29 and 30 with two-point links so that they can be raised and lowered, and the front working machines 27 are attached to the lift cylinder 3.
1, and the rear working machine 28 is raised and lowered by the lift arm 3.
2 to be raised and lowered.

The first transmission section 9 and the second transmission section 14 are provided with a forward/reverse switching mechanism to enable the tractor 1 to move forward or backward, and the traveling system transmission section 12 is linked to a rear wheel differential mechanism 33 and a front wheel differential mechanism 34. 35 is a front wheel drive propeller shirt 1-.

Clutches 36 and 37 are provided on the route to the rear wheel differential mechanism 33 and on the route to the front wheel differential mechanism 34, respectively, and the clutches 36 and 37 can be freely connected and disconnected.
Drive either the front or rear wheels 2 or 3, or drive the front or rear wheels 2 or 3.
It is possible to drive both.

The PTO transmission section 13 includes a rear PTO transmission section 38 and a front PT.
O transmission parts 39 are each provided as an output side,
Clutches 40, 41 are provided on each output side, and each clutch 40, 41 connects and disconnects the transmission parts 38, 39, which are rotated at the same speed.

That is, in this embodiment, the front working machine 27 is lifted, so the clutch 41 is disengaged, and the rear working machine 28 is lowered to the ground and in the working position, so the clutch 40 is engaged. Plowing work is being done in the plowing section 28B.

Next, the operation in the embodiment will be explained.

In the state shown in FIG. 1 in which the tractor 1 is moving forward to carry out work, the front working machine 27 is lifted and the clutch 41 is disengaged, so that its tilling section 27B is kept stationary, while the rear working machine 28 is placed on the ground. The tiller is lowered to the tiller, and the tiller 40 is brought into contact with the tiller 28B to carry out tilling work.

At this time, at least the pair of left and right front wheels 2 are being driven in the forward direction, and since the front working machine 27 is lifted, its weight is added to the front wheels 2, making it possible to obtain a large tractive force.

In addition, since the lug 2A of the front wheel 2 is rotated in the direction of soil removal (jumping) while holding the soil, the amount of soil adhering to the front wheel 2 is reduced and a large traction force is obtained.

When the work progresses and the tractor 1 reaches the headland, it is necessary to wait a second for the next work process, but at this time the front work equipment 2
7 and the rear working machine 28 so that both the front wheels 2 and the rear wheels 3 are diagonally directed in the same direction, and the tractor L is moved forward and backward.
Even if it is not turned, the next connection/disconnection process is carried out in seconds by club steering.

When this second period ends, the front working machine 27 is lowered to the ground, the rear working machine 28 is kept raised, and the front working machine 27 is driven and the rear wheels 3 are switched to drive in the reverse direction. Work is done by driving backwards.

At this time, the front working machine 27 can reduce the uncultivated area and work up to the headland.

In the embodiments and operations described above, a rotary tiller is shown as the working machine, but both the front and rear can be used as a plow or a trencher.In other words, the front and rear working machines 27 and 28 are It is fine as long as it is something.

(Effects of the Invention) According to the first feature of the present invention, at least the wheels on the lifted working machine side are driven and their lugs are diagonal lugs that provide traction force, so that the weight of the working machine is not transferred to the drive wheel U1. By adding it, you can obtain a large tractive force while also achieving good soil removal and performing work with less soil adhesion.

In addition, according to the second feature, either the front or rear wheels are driven, and the weight of the work equipment can be applied to these drive wheels. This allows for more efficient work by reducing unworked areas.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is an overall side view, FIG. 2 is a plan view, FIG. 3 is a schematic plan view showing the steering system, and FIG. 4 is a schematic plan view showing the transmission system. It is. 2.3...Wheel, 2A, 3A--Lug, 4...2
Axle four-wheel type traveling device, 6... Tractor body, 27.2
8...Work machine. Patent applicant: Kubota Iron Works Co., Ltd. (Author's signature and seal) December 20, 1985 Patent application No. 238958, filed in 1985, Title of invention: Tractor with work implement 3, Person making amendment case Relationship: Patent applicant (105) Kubota Tekko Co., Ltd. 4, Agent 1013 Mikuriya, Higashiosaka City, Osaka Prefecture, Showa Year, Month, Day 6, Claims column 7 of the specification to be amended, Contents of the amendment (1) The claims of the specification shall be amended as shown in the attached sheet. (2) Specification page 3, line 6, line 8, page 4, line 19
Delete the phrases ``Elevate and lower freely'' in line 1, page 5, line 1, line 11, line 14, page 6, line 3, and 51st line. (3) Specification page 5, line 2, line 15, page 6, line 6
The line ``J that is lowered to the ground shall be deleted.'' (4) Page 5, line 3, line 16, and page 6, line 7 of the specification.
Delete the phrase ``lifted up from the ground'' in the line. (5) The ``lifted side J'' in page 5, line 6 and line 19 of the specification is corrected to read ``the non-working side.'' (6) "At least..." in lines 12 to 13 of page 13 of the specification is corrected to "at least on the side of the working machine in the non-working state." 2. Scope of Claims (1) In a tractor having a two-axle, two-wheel type traveling device and a working machine attached thereto, the same type of working machine is installed at the front and rear of the tractor body 6, respectively.
When one of the working machines 27 and 28 is in a working position, the other is in a non-working position, and the two-axle and four-wheel traveling device 4 is connected to the working machine 27 and 28.
At least the wheels 2 or 3 of the j1 Gengeki Alliance are driven, and the lug 2A or 3A of the driven wheel 2 or 3 has a diagonal lug pattern oriented in a direction to obtain traction force. Tractor with work equipment. (2) In a tractor with a two-axle, four-wheel type traveling device equipped with a working machine, the same type of working machine 27.28 is placed at the front and rear of the tractor body 6, respectively.
One of the working machines 27.28 is in the Alff working position and the other is in the non-working position, and the 2-axle 4-wheel type traveling device 4 is equipped with the working machine 27.28cr>.
3F - Wheel 2 or 3 on the working state side is being driven,
A tractor with a working machine characterized in that the other wheel 3 or 2 is a driven wheel. (3) In a tractor with a two-axle, four-wheel type traveling device equipped with a working machine, the same type of working machine 27, 28 is installed at the front and rear of the tractor body 6, respectively.
h<* is equipped, and the working machine 27.28 is
When it is in the working position, it is in the non-working position, and the front wheels 2 and rear wheels 3 of the two-axle, four-wheel type traveling device 4 both turn in the same direction and move forward and backward diagonally. A tractor with a working machine characterized by:

Claims (3)

[Claims] (1) In a tractor having a two-axle and four-wheel type traveling device, in which a work implement is attached to the tractor so that it can be raised and lowered, the tractor body 6
Work machines 27 and 28 of the same kind are installed at the front and rear of the machine, respectively, so that they can be raised and lowered, and when one of the work machines 27 and 28 is lowered to the ground and in a working position, the other is lifted off the ground and placed in a non-working position. In the two-axle four-wheel type traveling device 4, at least the wheel 2 or 3 on the side on which the work implements 27 and 28 are lifted is driven, and the lug 2A or 3A of the driven wheel 2 or 3 is A tractor with a work implement characterized by having a diagonal lug pattern oriented to obtain traction force. (2) In a tractor having a two-axle and four-wheel type traveling device, in which a work implement is attached to the tractor so that it can be raised and lowered, the tractor body 6
Work machines 27 and 28 of the same kind are installed at the front and rear of the machine, respectively, so that they can be raised and lowered, and when one of the work machines 27 and 28 is lowered to the ground and in a working position, the other is lifted off the ground and placed in a non-working position. The two-axle four-wheel traveling device 4 is characterized in that the wheel 2 or 3 on the side on which the work implements 27 and 28 are lifted is driven, and the other wheel 3 or 2 is a driven wheel. A tractor with a working machine. (3) In a tractor having a two-axle, four-wheel type traveling device with a work implement attached to the tractor so that it can be raised and lowered, the tractor body 6
Work machines 27 and 28 of the same kind are installed at the front and rear of the machine, respectively, so that they can be raised and lowered, and when one of the work machines 27 and 28 is lowered to the ground and in a working position, the other is lifted off the ground and placed in a non-working position. A tractor with a work implement, characterized in that the front wheels 2 and rear wheels 3 of the two-axle, four-wheel type traveling device 4 both change direction in the same direction and are club-steering to move forward and backward diagonally.