JPS5851058Y2 - External power extraction device for agricultural tractors - Google Patents

Description

[Detailed description of the invention] This invention relates to a device for extracting engine power to the outside at the front of an agricultural tractor.
This device was designed to improve the durability and safety of this external power extraction device. An appropriate space is formed on the upper side to support the battery and radiator, and a bumper is mounted on the front end of the space, while a funnel-shaped rear recess is provided on the rotating shaft at the front of the engine, and a spline hole is drilled in the connection. A bearing for pivotally supporting a transmission shaft having a transmission wheel for extracting power externally at its front end and a spline formed at its rear end is fitted with a spline to the connecting member by passing the transmission shaft through the space. It is characterized in that it is configured to be removably fixed to the bumper in the raised state.

With this, the transmission wheel and bearing for external power extraction are installed in advance on the front part of the transmission shaft, and the engine power external extraction device is assembled. The engine power external extraction device can be quickly and easily assembled to the tractor by just two operations: inserting it into the side, connecting it to the rotating shaft of the engine, and fixing the bearing to the bumper.

Moreover, its disassembly can be done quickly and easily by reversing the assembly process.

In particular, since the two can be connected by abutting the rear end of the transmission shaft against a connecting member that has a funnel-shaped rear recess provided in the rotational shaft of the engine, during the connecting operation, the It is not necessary to insert one's hand to the connecting point, and the connecting operation can be performed very easily.

In addition, since the transmission shaft is located in the space between the battery, radiator, and front wheel mounting bracket, it is protected by the battery, radiator, and front wheel mounting bracket, and the transmission shaft is protected from rust due to muddy water. Furthermore, it is possible to improve safety by preventing contact with other objects and wrapping around the worker's clothing, etc.

Moreover, the bearings of the engine power extraction device are directly fixed and supported by the Panhani, and no intervening support bracket is required, making the mounting structure simpler and cheaper to manufacture. have an effect.

An embodiment of this invention that can produce such various effects will now be described with reference to the drawings.

The drawing shows an agricultural tractor, in which a battery 2, a radiator 3, an engine 4, and a fuel tank 5 are arranged in order from the front inside a hood 1.

A radiator fan 6 attached to the radiator 3 has a crankshaft front end 7 that protrudes forward from the front lower part of the engine 4.
The radiator fan 6 is driven by a fan drive pulley 8 fixed to the radiator fan 6 via a belt 9 and a pulley 10 fixed to the radiator fan 6.

A pair of left and right front wheel mounting brackets 11 extend forward from both left and right sides of the lower portion of the engine 4.

The battery 2 and radiator 3 are supported by forming an appropriate space above the front wheel mounting bracket 11, and a bumper 12 is mounted on the same dirt floor at the front end of the bracket 11.

A pulley 13 with an electromagnetic clutch for extracting power externally is arranged in a space directly above the bumper 12.

The electromagnetic clutch 14 of the pulley 13 is configured to be switched by a switch 16 attached to a control panel 15 at the rear of the hood 1.

A rear end portion 17aK of the transmission shaft 17 extending rearward from the pulley 13 via the electromagnetic clutch 14 is formed with a spline, and the rear end portion 17a is fixed to the front end IK of the crankshaft of the engine 4 and has a funnel. The fan drive pulley 8', which is a connecting member having a rear recessed portion shaped like the shape of a rear recess and a spline hole, is interlocked and connected by spline fitting.

Further, the front portion of the transmission shaft 17 is supported by a bearing 18''C@, and the bearing 18 is fixed to the rear surface of the central portion of the bumper 12 with a bolt 19.

Further, the intermediate portion of the transmission shaft 17 is configured to have a small diameter, so that even if an impactful load is applied, the shaft 17 appropriately twists and functions as a torsion bar.

Note that the engine power external extraction device 20 is assembled by attaching in advance a pulley 13 with an electromagnetic clutch 14 and a bearing 18 for external power extraction to the front part of the transmission shaft 1T.

Insert the rear end 17a of the transmission shaft 1T of this device 20 from the front of the tractor, over the bumper 12, and into the space between the battery 2, radiator 3, and front wheel mounting bracket 11. The bearing 18 is passed through and spline-fitted to the fan drive pulley 8, and the bearing 18 is lifted sideways and passed over the bumper 12. 19
The engine power external extraction device 20 can be quickly and easily attached to the tractor by the two operations of fixing the engine power with.

Also, disassembly can be done quickly and easily by reversing the procedure.

Particularly, since the rear end 17a of the transmission shaft 1T can be connected to the fan drive pulley 8rc, which is a connecting member having a funnel-shaped rear recess provided on the crankshaft 7 of the engine 4, the two can be connected. During operation, it is not necessary to insert one's hand to a connecting point located inside the body, and the connecting operation can be performed very easily.

In addition, since the transmission shaft 1T is disposed in the space between the battery 2, radiator 3, and front wheel mounting bracket 11, the battery 2, radiator 3, and mounting bracket 11
This protects the transmission shaft from rusting caused by muddy water, etc., and improves the durability of the transmission shaft.Furthermore, it prevents contact with other objects and entanglement with workers' clothing, etc. Safety can be improved.

Moreover, the bearing 18 of the engine power external extraction device is fixedly supported directly on the bumper 12, and no intervening support bracket is required.This omission makes the mounting structure simpler and cheaper. Can be manufactured.

[Brief explanation of drawings]

The drawings show an embodiment of this invention, and FIG. 1 is a partially longitudinal side view of an agricultural tractor, and FIG. 2 is an enlarged longitudinal side view of section A in FIG. 1. 4... Engine, γ... Rotating shaft, 11
...Front wheel mounting bracket, 12...Bumper, 13...Transmission wheel for external power extraction, 1
T...Transmission shaft, 18...Bearing.

Claims (1)

[Scope of utility model registration request] The front wheel mounting bracket (11) fixedly extends forward from the engine 4 is provided with an appropriate space above the battery 2.
The radiator 3 is supported and the bumper 12 is mounted on the front end of the radiator 3.
A connecting member 8 having a funnel-shaped rear recess and a spline hole is provided, and a transmission wheel 13 for extracting power externally is provided at the front end.
Transmission shaft 1 with a 17 avc spline formed at the rear end
7 is removably fixed to the bumper 12 in a state in which the transmission shaft 1T passes through the space and is spline-fitted to the connection member 8. External power extraction device for agricultural tractors.