JPS5820690Y2 - Tractor front loader attachment/detachment structure - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement in the front loader attachment/detachment structure of a tractor used for agricultural work or the like.

Tractors used for this type of agricultural work are designed to have various types of work equipment attached to the front and rear, and therefore the front loader can be attached and detached.

The front loader mentioned above is quite large and heavy, so
Conventionally, a highly rigid and sturdy front loader mounting frame is attached to the tractor chassis.

However, the engine is mounted on the front of the tractor, and the front loader mounting frame is disposed on both sides of the engine. Therefore, the frame has the disadvantage that it obstructs maintenance, inspection, and maintenance of the engine.

In addition, the front loader has a mounting plate integrally attached to the rear end of the lift arm to which the base end of the lift cylinder is attached, while a mounting column is provided on the tractor side frame to fit and fix the above mounting plate part. Since this mounting column is relatively tall and accommodates the mounting plate that connects the rear end of the lift arm and the base end of the lift cylinder, it is not possible to remove the front loader and use other work equipment for agricultural work. This has the disadvantage that it obstructs the view of the front wheels from the driver's seat, and causes problems when it is necessary to drive carefully in narrow spaces.

Furthermore, although the front loader is supported by a stand after being removed from the tractor, conventional front loaders have a structure in which the mounting plate portion at the rear of the tractor is connected with a pin to the mounting support portion. Before detaching the front loader, it is necessary to set the stand in the middle of the lift arm, and detaching the front loader is done by uncoupling the pin and moving the tractor backwards. It is necessary to set it at least in front of the front wheels of the tractor, and in this case, the lift arm will be supported by the stand relatively in front of the lift arm, which will improve the stability of the front loader after detachment. If a child or the like hangs from the rear end of the lift arm, the stand may fall over, which is dangerous.

This idea was proposed in view of the above-mentioned drawbacks, and is as follows:
The configuration of this invention will be explained below with reference to embodiments shown in the drawings.

In FIGS. 1 and 2, A indicates a tractor and B indicates a front loader.

The front loader B has a lift arm 2 with a working device 1 such as a packet attached to its tip, and a mounting plate 4 to which a base end of a lift cylinder 3 is pivotally attached to the rear end of the lift arm 2 is attached to an arm pivot 5. This mounting plate 4 is pivotally connected via
A front loader mounting frame 6 is integrally fixed to the front loader mounting frame 6.

Reference numeral 7 denotes a dump cylinder, which rotates the work equipment 1 via the crank 8 and the link 9 to scoop up and release the work object, and by using the crank 8 and the link 9, Move the dump cylinder 7 as far away from the work object as possible to prevent damage from the work object, and
The rotation angle of the work equipment 1 is increased.

A hook 10 is provided on the lower front surface of the front loader mounting frame 6, and a pin hole 11 to be connected to the tractor A is provided at the lower end of the mounting plate 4.

Correspondingly, there are brackets on both sides of tractor A.)
12 and 13 are firmly fixed to a rigid body part such as a chassis.

A locking pin 14 for locking a hook 10 provided on the lower front surface of the front loader mounting frame 6 is protruded from the side of the front bracket 12. A rolling roller 15 is provided at the protruding end.

Further, the rear bracket 13 is provided with a short fitting part 13a that fits only the lower part of the mounting plate 4, and this fitting part 13H matches the pin hole 11 of the mounting plate 4. A pin hole 16 is provided, and a connecting pin (not shown) is inserted through both pin holes to connect the two pins.

As shown in FIG. 3, the hook 10 provided on the front loader mounting frame 6 can be adjusted in position in the front and back direction via a sliding tube 10a, and can be fixed at any position using a fixing bolt 10b. .

By doing this, it is possible to easily absorb installation errors and deviations between the brackets (12.13) attached to the front and rear of both sides of the tractor A side.

On the other hand, as shown in FIG. It supports the bottom surface of
To facilitate the attachment and detachment of the front loader, and especially to support the frame 6 to the end when the front loader is detached, the stand 17 of the front loader can be erected far further back than before. can be used to increase stability.

As explained above, this idea is based on a tractor with a removable front loader, in which the front loader mounting frame is integrally attached to the lift arm, and brackets are attached to the front and rear of both sides of the trunk to connect the front and rear of the frame. A hook that can be hooked to a locking pin of a bracket on the front side of the tractor is provided at the front part of the frame, the position of which can be adjusted, and a pin is connected to the bracket on the rear side of the tractor at the rear part of the frame. A hole is provided, and further,
Since a rolling roller supporting the lower surface of the frame is provided at the end of the locking pin of the bracket on the front side of the tractor, the front loader can be attached and detached easily, quickly and smoothly, and the stand is easier to use than before. Since the front loader can be placed far back, the front loader is highly stable after detachment, making it extremely safe.

Moreover, since the front loader mounting frame is fixed to the front loader side, maintenance of the engine of the L-Rakuta is easy.
Inspection and maintenance are easier, and since the rear bracket of the tractor can be lowered, the front wheels can be easily checked from the driver's seat.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the present invention, and FIG. 2 is a plan view showing only one half of the same. FIG. 3 is an enlarged side view of the hook portion, and FIG. 4 is an explanatory diagram showing the relationship between the rolling roller and the frame. A...Tractor, B...Front loader, 2...Lift arm, 6...Front loader mounting frame, 10...Hook ,
11...Pin hole, 12.13...Bracket, 14...Latching pin, 15...
Rolling roller, 16...Tractor side pin hole.

Claims (1)

[Scope of utility model registration request] In a tractor with a detachable front loader, a front loader mounting frame is integrally attached to the lift arm, brackets are attached to the front and rear of both sides of the tractor to connect the front and rear of the frame, and the front part of the frame is attached to the front loader. A hook that can be hooked to a latching pin on a bracket on the front side of the tractor is provided in an adjustable position, a pin hole is provided on the rear part of the frame to be connected to a bracket on the rear side of the tractor, and A front loader attachment/detachment structure for a tractor, characterized in that a rolling roller supporting a lower surface of the frame is provided at an end of a locking pin of a front bracket.