JPS6115100Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a front loader device that protrudes from the vicinity of the driver's seat of an agricultural tractor and rotates up and down.

Agricultural tractors are configured to be adaptable to agricultural work by being equipped with various working machines, and front loaders are also configured to be attachable and detachable as working machines for agricultural tractors.

Most of the implements attached to agricultural tractors are attached to the rear implement attachment device.
Many of the mounting methods and drive devices are standardized.

On the other hand, a front loader is one of the few working machines that can be mounted on the front of an agricultural tractor, and its installation location, installation method, and method for extracting hydraulic pressure for vertical movement have not yet been standardized.

At present, the mounting method and mounting location differ depending on the size and model of the tractor.

The present invention provides a means for unifying these miscellaneous mounting locations and mounting methods.

In particular, it attempts to fix the pillar part to the tractor body using a fixed method for any tractor by standardizing the method of supporting the pillar relative to the tractor and the mounting position of the operating device for operating the front loader. be.

The purpose of the present invention is as described above, and the structure of the present invention will be explained based on the structure of the embodiment base shown in the attached drawings.

FIG. 1 is a side view of an agricultural tractor equipped with a conventional front loader device.

FIG. 2 is a side view of an agricultural tractor equipped with the front loader device of the present invention.

In the front loader device, a bucket 16 is rotatably supported at the tips of arms 6, 6 which are freely rotatably supported in parallel. The bucket 16 can be tilted into a discharging state and a scooping state by forced reciprocating motion by the hydraulic pressure of a lift cylinder 17. The vertical movement of the arm 6 is performed by forced reciprocation of the dump cylinder 7. The arm 6 has its pivot point at the pillar 4, and the dump cylinder 7 has its pivot point at the pivot body 5 provided from a part of the pillar 4.

Conventionally, the control box 1, the operating lever 2, etc. were mounted on a part of the pillar 4 or on a mounting body that was erected like the pillar 4.

The present invention connects the control box 1, operating lever 2, etc. to a tie bar 3 that connects the tops of the left and right pillars.
It is fixedly installed in the In particular, it is unevenly distributed on either the left or right side of the tie bar. In addition, we improved the point that the operating lever was far away because it was conventionally attached to the pillar, and moved it closer to the operator.The operating lever position is also the branching point of each hydraulic pipe 19, so that the hydraulic pressure can be divided into either the left or right side. Piping 19
is protected by this tie bar, and the rear hydraulic case 2
It also protects the hydraulic piping heading to zero.

In addition, the hydraulic piping is centered around the control box,
Since the front loader device is fixed, it can be freely attached to and removed from the tractor.When separating the front loader device from the tractor, all the hydraulic piping for the front loader can be attached to the front loader by removing the pipe joint between it and the hydraulic case 20. It is constructed so that it can be removed in one piece.

The pillar 4 is fixed to the lower surface of the clutch housing 11 with a bolt from below, and is also fixed to the front frame of the agricultural tractor via a link 9 and a fixing fitting 10. If the bending load when a heavy object is placed on the shovel is supported only by the fixed part of the pillar at the bottom of the clutch housing, it will not be strong enough and there is a risk of the bolt breaking. There is. 8 is the front bumper.

In the state of the present invention shown in FIG. 2, the link 9 extends along the lower surface of the engine and reaches the fixing fitting 10. A transmission case 12 is fixed to the rear surface of the clutch housing, and a rear wheel 14 is supported on the transmission case 12. 13 is the front wheel.

FIG. 3 is a plan view of FIG. 2. FIG. 4 is a perspective view of the pillar 4 and tie bar 3.

The tie bar 3 is provided with a control box 1 and an operating lever 2 for the front loader device, and in particular, the operating lever 2 is unevenly located on the left side of the tie bar, making it close to the operator and easy to operate.The lift cylinder 17, the dump cylinder 7, and the hydraulic A hydraulic pipe 19 for feeding oil to the case 20 is placed along the tie bar 3. In addition, the left and right pillars 4, 4 are fixed with tie bars 3, which also serve to reinforce the pillars 4, 4. Since the tie bar 3 crosses the bonnet immediately in front of the steering handle 18, the front loader's control box, etc. will be located at approximately the same height as the tractor's dash board, and other operation panels 21 will be placed on this tie bar. It is also possible to wear it.

As described above, the present invention has pillars 4, 4 for supporting the arm base end erected on the left and right sides of the tractor, and a tie bar 3 is installed between the upper ends of the left and right pillars at the top of the bonnet.
The hydraulic piping 19 is connected from the rear hydraulic case 20 to the control box 1, and from the control box 1, the hydraulic piping 19 is branched in the direction of the right cylinder and the left cylinder, and then in the left and right direction. The hydraulic piping 19 is disposed along the tie bar 3, and the hydraulic piping 19, the operating lever 2, and the control box 1 are disposed on the tie bar 3, which can be freely attached and detached, so that the following effects are obtained.

First, parts related to the hydraulic system and control box can be concentrated on the tie bar, eliminating the complexity of installing a front loader on an agricultural tractor and making maintenance easier. In addition, due to the concentration of precision parts, it is easy to take care when disassembling and transporting the product, and damage can be avoided.

Second, the operating lever can be provided at a position closer to the operator than in the conventional case where the operating lever is provided on the pillar, and it does not interfere with the operation of the steering wheel.

Thirdly, the tie bars were connected and used as a branch of the hydraulic piping and a guide for the hydraulic piping, so the hydraulic piping that separates from the pillar part to each cylinder of the left and right arms was passed through the tie bars and used as a guide. Therefore, the piping of the hydraulic piping can be arranged in a well-organized manner, and the piping from one side of the left and right to the other can be protected, thereby eliminating damage to the piping.

Fourthly, since the hydraulic piping is centered around the control box and fixed, when the front loader is attached to or removed from the tractor, all that is required is to remove the pipe joint of the part of the hydraulic piping that is connected to the hydraulic case. Since all the hydraulic piping for the front loader is attached to the front loader and removed as one, it is easy to install and remove the front loader, and even after removal, it can be stored with the hydraulic piping still attached to the front loader. It can be done.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a conventional front loader device, and FIG. 2 is a side view showing the front loader device of the present invention. 3 is a plan view of FIG. 2, and FIG. 4 is a perspective view of the pillar and tie bar portion. 1...Control box, 2...Operation lever, 3...
...Tie bar, 4...Pillar, 6...Arm, 7...
...Dump cylinder, 17...Lift cylinder.

Claims (1)

[Scope of utility model registration request] Pillars 4, 4 for supporting the base end of the arm are erected on the left and right sides of the tractor, and the upper ends of the left and right pillars are connected by a tie bar 3 at the top of the bonnet, and the hydraulic pipe 19 is connected to the control box from the rear hydraulic case 20. 1, and from the control box 1, the hydraulic piping 19 is branched to the right cylinder direction and the left cylinder direction, and the hydraulic piping 19 is connected to the left and right direction.
This front loader device is characterized in that a hydraulic pipe 19, an operating lever 2, and a control box 1 are arranged along a tie bar 3, and a hydraulic pipe 19 is arranged on the tie bar 3, which is freely detachable.