JPS5822769A - Lifting device for agricultural tractor and trailer - Google Patents

Abstract

PURPOSE:To enable to tow and couple a trailer to a tractor while a carrier lift is mounted by elevationally movably supporting a mast which elevationally movably supports the carrier lift on the tractor at three-point supporting unit. CONSTITUTION:Masts 13, 13' are elevationally movably supported through three- point supporting unit having an upper ring 7 and two lower rings 3, 3' at the rear of a body 2, and a lift 30 which mounts a carrier 41 on the masts 13, 13' is elevationally movably supported through a chain 31 which winds a guide wheel 32. When a trailer 49 is coupled and towed, lower rings 3, 3' are upwardly moved through an arm 33 and a rod 34 to move upwardly the mask 13, 13', and a pin 51 of a trailer 49 is connected to a hitch 50 of a supporting bracket 20 under the carrier 41 which is thus moved upwardly.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lift device for an agricultural tractor and a trailer, and particularly relates to a lift device using a three-point support device.

Further, in the present invention, a trailer can also be attached to the lift while the carrier is attached to the lift.

The pressure point support device has a structure in which it is attached to a working machine using seven top links and two lower links, and is attached to most of the current agricultural tractors.

The present invention is devised so that a lift for lifting loads of 1 m to 1.5 m cannot be moved upward by using the three-point support device.

Conventional lift devices move the lift attached to the mast up and down by expanding and contracting a long hydraulic cylinder installed separately on the mast side.

When the lift device is attached to the three-point support device of the agricultural tractor described above, the device can only move up about 5 ocrn, so it cannot be used as a substitute for a lift device with a hydraulic cylinder. Therefore, in the present invention, a vertical mast is attached to a three-point support device, a lift is attached to the mast, and when the mast is moved upward by about 5oCIn by the three-point support device, the lift alone can be increased by 1m to 1m by a separately attached expansion device. It was designed so that it could move up as much as .5m.

In this way, when a carrier is attached to a lift that moves high using an enlarging device, for example, boxes of sweet potatoes that have been dug up after two trips through a rice field can be loaded into the carrier one after another, and then transferred to a trailer parked on the street. It can be changed. After the transfer, the carrier can be removed from the tractor, replaced with a trailer, and transported, but since the carrier is quite heavy, the present invention uses a hydraulic mechanism attached to the tractor to move the lower link. The carrier is suspended high in the air by being moved upwards, and a trailer is connected to the carrier so that the trailer can be towed with the carrier attached.

The present invention provides: a.) A three-point support device consisting of an upper link and a lower link is provided at the rear of the rafter.

b. C0 supporting the vertical mast with a three-point support device. A lift that moves up and down with rollers is installed on the vertical mast.

d. At the rear of the tractor body, a supporting metal fitting that projects rearward shall be provided.

e. The chino, which is connected at one end to the lift, is connected to the support fitting by winding the guide wheel attached to the top of the mast.

Attach a hitch for connecting the trailer to the rear end of the support bracket.

The present invention is an agricultural tractor lift device and a trailer which combine the following requirements.

To explain the embodiment of the present invention with the drawings, (1) is an agricultural tractor, which is formed into a four-wheeled type, and the rear of its body (2) has two lower links +31 +310.
The front end is fixed by the shaft (41). At the upper position of the lower link f31 (31), several mounting holes (51+51) are installed in the mounting bracket (6), which are arranged vertically. The front end of the upper link (7) is pivoted to the upper mounting hole (5) of the provided mounting holes (5).The upper link (7) is attached to a threaded rod ( 8), a screw tube (9) for adjusting the length of the upper link (7), a screw rod θ0 attached to the mast side, and a forked portion αO.The tip of the screw rod (8) has a shaft portion 011. is formed, insert the shaft part 0υ between the mounting fittings (6), align it with the mounting hole (5), and insert the bottle O2 to fix the shaft.The screw rod (8) is screwed into the screw tube (9). The latter half of the upper link (7) has a V-shaped fork OI, a screw rod 01 is pivotally attached to the fork f11, and the screw rod a1 is screwed into the screw tube (9). Screw rod (8
) and the threaded rod Q (1 is oppositely threaded, for example, when the threaded tube (9) is rotated in the normal direction, the upper link (7) becomes longer, and when it is rotated in the opposite direction, it becomes shorter. The vertical mast +13 (+31') is positioned so as to sandwich it.The vertical mast orientation a4 is as follows when viewed from the side:
As shown in Fig. 5, the shaft attachment part I is located at an intermediate position in the vertical direction.
α4 is provided. Further, a shaft attachment part α5 us that projects forward is provided at the lower end of the vertical mast a. Then, the shaft hole 0υαG formed at the rear end of the forked part QlO is aligned with the shaft attachment part α4041, and the bottle an (17+) is inserted and attached to the +11. The shaft hole aS U is formed, and the shaft hole 08α is aligned with the shaft attachment part as as, and the pin Q!I Ql is properly attached.The upper link (7) and the lower link (3)
are both formed to have the same rear length, and the shaft (4) stopping portion of the lower link (3) relative to the fuselage (2) is
It is formed a little forward of the shaft stop of the upper link (7) (all three-point support mechanisms are formed that way), but if you look at the position of each shaft stop with respect to the mast 0 country, The bin OI of the lower link (3) is pivoted to the shaft attachment part aS that protrudes forward from the mast 0, and the bin a71 of the upper link (7) is pivoted to the shaft attachment part θ (a) located behind it. Therefore, the relationship is a parallelogram, and the mast a3 is supported vertically and moves up and down while maintaining the vertical position.

At a position below the mounting bracket (6), the front end shaft C1 of a separately formed support bracket (4) is used to securely attach the support bracket (4). The support bracket ■ protrudes horizontally to the rear, and connects the rear end ■ with the mounting bracket (6).
) The tension fitting (C) is installed in a triangular shape between the two. The metal fitting (C) is formed by threaded rods Q4 IB at both ends and a threaded tube (C) in the middle, the screw rod Q4 is fixed to the mounting hole (5) with a pin Qj, and the screw rod (C) is a support metal fitting. (4) is correctly placed in bin d. A handle fin is provided on the screw tube (E). When the screw tube (A) is rotated by operating the notle (5), the tension fitting (C) is adjusted to be long or short, and the rear end of the support fitting (1) moves up and down. At the rear end of the support bracket ■, there is a hitch ω for connecting the trailer 4.
The 06υ that attaches is the binding bin.

The cross-sectional shape of the vertical masts Q3ai is U-shaped, facing each other, and is used as a space rail inside the mast Q3a to lift it up and down. In other words, two upper and lower rollers are fitted into the U-shaped space of the mast 0 and α3', respectively, and the rollers (ha)
A lift (to) that moves up and down is attached by d. When viewed from the side, the lift ω is an I-shaped hawk consisting of a vertical part (to) and a horizontal part d that projects horizontally to the rear, and a shaft hole (to) is bored at the rear end of the horizontal part. Ru. One end of Cheno 011 is connected to the lift (to), and one end of Cheno G11 is connected to the lift.
The other end of the guide wheel C33k suspended from the upper end of the mast 0403 is lowered by eight turns and fixed to the rear end part (2) of the support fitting (toward). In this case, a guide wheel may be attached to the rear end of the support fitting (a), and the wire 61) may be folded back and fixed to the lift ω. So is a lift arm that moves up and down by operating a lever attached to the driver's seat of the tractor (1), and C341 is a lift rod. The lift ω has a vertical part (to) when viewed from the side.
It is L-shaped, consisting of six horizontal parts that protrude horizontally to the rear, and is fitted with a U-shaped lifting frame when viewed from above. The cross-sectional structure of the horizontal part cm of the lifting frame (to) is a mouth shape, and has a structure that fits into the horizontal part - (to) of the lift (to) from above. When the lifting frame (to) is placed on top of the lift (to), the tip of the horizontal part (to) of the lift (to) is the horizontal part C3 of the lifting frame (to). It reaches the intermediate position between the front and rear of l, and at that position, both are stopped by the shaft (to), and the lifting frame (to) becomes a dump truck tilting backward from the position where the rain horizontal part (to) 6η is parallel. do it like this. In addition, there is an engagement piece (4[
1k is provided, and an engaging portion RC9 that engages with this is attached to the mast 03 side.

A carrier 0υ is detachably attached to the above-mentioned lifting frame. At least the rear wall H of the carrier (4υ) is attached so that it can be opened and closed.The bottom of the carrier (4D) has an insertion part into which the horizontal part C371 of the L-shaped lifting frame (toward) is automatically inserted when the tractor (11) moves backward. C3 is formed.The horizontal portion C171 has a lower surface of the rear end 0a that rises toward the rear, and is thin in vertical width. Fitting portions (four are formed so that the carrier 0υ
is placed on the ground, the tractor mk is moved backwards, and the horizontal part 071 of the L-shaped lifting frame (toward) on the tractor +11 side is shown in Figure 3. When the carrier Cυ is completely inserted into the insertion part 03 and the rear end 114) is fitted into the fitting part (4 parts), the carrier Cυ
A retaining portion hn is formed so that the front wall (c) of the carrier 01) can abut against the vertical portion of the lifting frame (2) and can be fixed to the lifting frame (to) of the carrier 01) in this state. C8 is the engaging portion (47
This is the engagement hole into which the bottle inserted at + is inserted.

Since the present invention has the above-described configuration, the lift arm (
When the lower link (31 (31) is moved up by the lift rod (b) (b), the mast 0
3 C3 moves up. In this case, the mast a303 is 50
If you move up c1rl, the lift ω side of Cheno 01) will be 1m.
Since the lift frame will also have to be moved up, the lift frame (to) will be moved up by 1 meter.

However, since the lifting frame (to) is L-shaped when viewed from the side, and the carrier 4 is removably attached to it, the lifting frame (to)
In the case of only one, it can be used as a normal forklift, and the forklift can also be used as a dumping lift. Then, place the carrier 0υ on the ground, move the elevating frame (G) down, and move backward. , the carrier (4υ
It is possible to transport cargo. In addition, by attaching the carrier (40) to the lifting frame (to), the lifting frame (to)
This is a structure that dumps the entire file (to).

For example, when harvesting sweet potatoes in a rice field using the carrier θυ as described above, the following operation is performed using the tractor (1), the trailer (41), and the carrier k11.

That is, by operating the hydraulic lever of the tractor (1), lower link f31 +3 is activated by lift rond (b) (b).
When 1 is fully raised, the carrier (III) attached to the lift (total) will be suspended high in the air (Figure 9). After fitting into the connecting pitch (A) attached to the rear end, if you connect the two with the connecting pin eill, you can tow four trailers with the carrier 0υ attached, and transport both at once. When we arrived at the field, we pulled out the combined bin diagram, released Trailer 4, lowered the carrier CD to about 5ocrrL above ground, drove through the rice field, loaded the boxes of sweet potatoes one after another onto the carrier I, and parked it on the street. When trailer 4 is full of boxed sweet potatoes, move carrier Il high into the air again and connect trailer C9 underneath it. It is to be transported.

The present invention has the above-mentioned structural functions, and in particular: a. A three-point support device consisting of an upper link (7) and a lower link +31431 is provided at the rear of the tractor (1).

b, Vertical mast [+3 a:ff
Support i.

C1 Vertical mast a3θ3 is provided with a lift that moves up and down with rollers (c) and d.

d. At the rear of the body (2) of the tractor fil, a supporting metal fitting (a) is provided that projects rearward.

e. Cheno 011 with one end connected to the lift (to),
The guide wheel 03 attached to the upper part of the mast 03a3 is wound and connected to the support fitting (4).

f. Attach a pitch group for connecting trailer O scratches to the rear end (c) of the support metal.

Since the agricultural tractor lift device and trailer are designed based on the above requirements, the trailer can be transported with the carrier θυ attached, making handling even easier.

[Brief explanation of the drawing]

Figure 1 is an overall side view, Figure 2 is a perspective view of the main parts, Figure 3 is a side view with the loading platform lowered, Figure 4 is a side view with the loading platform raised, and Figure 5 is a side view of the loading platform. A side view of the mast, Fig. 6 is a plan view of the upper link, Fig. 7 is a side view of the loading platform, Fig. 8 is a sectional view taken along ■-■, Fig. 9 is a diagram with the trailer attached,
FIG. 10 is an enlarged exploded view of the main parts. Explanation of symbolsffi/agricultural tractor, (2) Aircraft,
(31+31...lower link, +41 +
41 Shaft, (5)・-Mounting hole, (6
)...Mounting bracket, (7)...Upper link, (8)...
・Threaded rod, (9 t・Screw tube, a[・Forked part, a t・
-screw part, an/shaft part, atsu...
・Bin, 03 a・Vertical mast, (I41
a6... shaft attachment part, as (Is... shaft attachment part, ata a
υ...Shaft hole, aηaη・Bin, as am...Shaft hole, 01 H...Bin, (a) 1. Support metal fittings, Qt.
Shaft, vessel/rear end, (to)... tension fitting, c! 4
1 (c) Screw rod, spoon [...bottle, (c)...screw tube, punishment...handle,'' [space, 4th...coro, (
To)...Lift, (To)-Horizontal part, (311...Cheno, (To)-Shaft hole, (To)-Vertical part, ■...Guide wheel, ■Lift arm, (2)--Lift Rod, (to) Lifting frame, (G) Vertical part, G71...Horizontal part, Upper...shaft, Gl Engaging fitting, 4...Retaining piece, Cυ Carrier, C3...Rear wall, 03...Insertion part, (44...rear end, θ'9...fitting part, (G)...front wall, (471...engaging part, decoy/engaging hole, f4
1...Trailer-15I pitch, era...combined bin. Patent Applicant: Suzuki Forging Co., Ltd. Procedural Amendment (Restraint 1. Indication of Incident 1981 Patent Application No. 120843 ° 2,
Title of the invention Agricultural tractor lift device and trailer 3, relationship with the case of a person acting as an assistant market Patent applicant address 44-34 Hiraide Industrial Park, Utsunomiya City, Tochigi Prefecture, Agent (1) Drawings (Fig. 1 and Figure 4) is corrected.

Claims (1)

[Claims] An agricultural tractor lift device and trailer comprising the following requirements a to f: an upper link (7) at the rear of the tractor (1);
A three-point support device consisting of a lower link +31 and a lower link +31 is provided. b. Support the vertical mast (31+31) with a three-point support device. A lift (to) that goes up and down with rollers is installed on the C0 vertical mast +31 +31. d. At the rear of the body (2) of the tractor (1), A supporting metal fitting ■ is provided that protrudes toward the rear. e. Chain G11, one end of which is connected to the lift, is
The guide wheel opening 2 attached to the upper part of the mast 03G3 is wound around and connected to the support fitting 4. f. At the rear end (to) of the support bracket (A), there is a trailer-0
Attach the bonding hitch gloss from step 1.