JPS6127303Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is based on a horizontal engine with an output shaft directed in the left-right direction of the vehicle body, and an input shaft located at one end in the longitudinal direction with respect to a cargo bed mounted on a traveling vehicle body. A transport vehicle is provided with a transmission device that directs the vehicle body in the longitudinal direction, and the engine output shaft and the transmission input shaft are interlocked and connected by a transmission device equipped with a rotary motion direction conversion mechanism. Regarding the technology for forming.

[Conventional technology] Conventionally, the technology related to the above-mentioned power take-off shaft is as follows:
For example, as shown in Japanese Utility Model Publication No. 43-1368, power take-off shafts are provided protruding from the rear and sides of the transmission case of a tractor, and bevel gears, shift gears, etc. are installed so that the drive speed of each take-out shaft can be changed. There is one that consists of a drive system, and there is also a
As shown in Japanese Patent No. 26273, there is a structure in which a casing configured so that power can be extracted from a gear housed in the transmission case of a tractor is attached to the outer wall of the transmission case.

[Problems to be solved by the invention] Generally, in addition to transportation work, work using a transport vehicle includes work in which a device used for spraying chemicals or fertilizers on farmland is mounted on the loading platform, or the front end of the vehicle body is Since some work is carried out by connecting a grass cutting device to a vehicle, it has been desired to provide power take-off shafts at various locations on the transport vehicle.

However, in the above-mentioned conventional technology, the power is extracted by adding a new transmission member such as a bevel gear, and the structure tends to be complicated because the casing is attached, and there is room for improvement in terms of manufacturing and cost. Ta.

An object of the present invention is to provide a power take-off shaft with a simple structure in a transport vehicle having the above structure.

[Means for Solving the Problems] The feature of the present invention is that the rotational motion direction conversion mechanism is configured such that the input shaft faces in the left-right direction, and the output shaft faces in either the front or rear direction, and It is constituted by a bevel gear mechanism in which the axes of the two shafts are perpendicular to each other on a horizontal plane, and the input shaft is extended in both left and right directions, and the shaft ends are located at the left and right ends of the vehicle body, and are set as power extraction shafts. In addition, the output shaft is extended, and the shaft end is located at either the front or rear end of the vehicle body, and is set as a power take-off shaft. A bevel gear that rotates on the extended axis of the gear is engaged, a shaft directly connected to the gear is extended in the opposite direction to the output shaft, and the shaft end is located at the end of the vehicle body, and is set as a power extraction shaft, Furthermore, the level of these axes is set to be located between the vehicle body frame and the cargo bed, and their functions and effects are as follows.

[Function] In other words, since the power take-off shafts are provided at four locations on the front, rear, left, and right sides of the vehicle body as described above, when carrying out work with the spraying device mounted on the loading platform, the power take-off shaft at the rear end of the vehicle body can be selectively used. This makes it possible to spray chemicals and the like from the rear and both sides of the vehicle body using a common transmission structure such as a chain by changing the mounting direction of the spraying device. In addition, the take-out shaft at the front end of the vehicle body can drive a grass cutting device, etc. Moreover, since these four take-out shafts are driven even when the vehicle body is stopped, any take-out shaft can be placed on the ground via a common drive structure. By driving the water supply pump, it is possible to spray water or wash the car.

[Effect of the invention] Therefore, the modification was made to the extent of simply extending the shaft that was originally connected to the bevel gear of the rotational motion direction conversion mechanism that interlockedly connected the output shaft of the engine, the input shaft of the transmission case, and the input shaft of the transmission case. As a result, a power take-off shaft with a simple structure and low cost has become available that allows various tasks to be carried out easily. In addition, since each shaft is installed at the same level, a common transmission structure can be used to drive, for example, a spraying device or a water pump. It has a simple configuration, is protected from contact with other objects, and is safe.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

A loading platform 3 is provided on a body frame 2a of a vehicle body 2 equipped with a tire-wheel type traveling device 1, and a traveling driving unit 4 and a control unit 5 are arranged side by side to constitute a transport vehicle.

As shown in FIG. 2, the traveling driving unit 4 is configured by having an output shaft 6 facing in the left-right direction of the vehicle body, an engine 7 installed horizontally, an input shaft 8 facing the front-rear direction of the vehicle body, and a transmission 9. In addition, the input shaft 1
0 faces left and right, the output shaft 11 faces rearward, and the respective shafts 10 and 11 face the transmission case 1.
A rotating motion direction changing mechanism 14 is provided which is interlocked and connected by a bevel gear mechanism 13 built into the engine 7, and the output shaft 6 of the engine 7 and the input shaft 10 of the mechanism 14 are connected to each other.
The output shaft 11 of the mechanism 14 and the input shaft 8 of the transmission 9 are connected by belt-type transmission mechanisms 15 and 16, respectively, and furthermore, longitudinal output shafts 17 and 1 provided in the transmission 9 are connected.
7 and a differential device 19 for the front and rear wheels 18, 18,
19 are interlocked and connected to form an all-wheel drive type traveling device 1.

an input shaft 10 of the rotational motion direction conversion mechanism 14;
The axes of the output shafts 11 are perpendicular to each other on a horizontal plane, and the level of this horizontal plane is the same as the vehicle body frame 2a.
and loading platform 3,
The input shaft 10 extends in the left-right direction, and its shaft ends are located at the left and right ends of the vehicle body 2, and are set as power output shafts. Further, the output shaft 11 of the mechanism 14 is also connected to the intermediate shaft 2.
0, the shaft end is located at the rear end of the vehicle body 2, and is set as a power take-off shaft.

Then, a bevel gear 23 rotating on an imaginary forward extension line of the output shaft 11 is engaged with the bevel gear 22, and a shaft 21 directly connected to the gear 23 is extended in the opposite direction to the output shaft 11 to form a vehicle body. A shaft end is located at the front end of the shaft 2 and set as a power take-off shaft, a spline b is formed on this shaft end, and a spline a is formed on the three shaft ends.

That is, by arranging the shafts in a cross shape from the rotary motion direction conversion mechanism 14, driving force can be taken out at four equal level positions on the front, rear, left and right of the vehicle body.

[Brief explanation of the drawing]

The drawings show an embodiment of the transport vehicle according to the present invention, with FIG. 1 being an overall side view and FIG. 2 being a schematic system diagram of the driving force. 2... Running vehicle body, 2a... Vehicle body frame, 3...
...Cargo platform, 6...Engine output shaft, 7...Horizontal engine, 8...Transmission input shaft, 9...Transmission device, 10
...Transmission shaft facing left and right, 11...Transmission shaft facing forward and backward,
13... Bevel gear mechanism, 14... Rotational movement direction conversion mechanism, 21... Shaft, 22, 23... Bevel gear.

Claims (1)

[Scope of utility model registration request] A horizontal engine 7 with an output shaft 6 directed in the left-right direction of the vehicle body and a transmission 9 with an input shaft 8 directed in the front-rear direction of the vehicle body are disposed at one end in the longitudinal direction with respect to a loading platform 3 mounted on the traveling vehicle body 2. The vehicle is a transport vehicle in which the engine output shaft 6 and the speed change input shaft 8 are interlocked and connected by a transmission device equipped with a rotational movement direction conversion mechanism 14, and the rotational movement direction conversion mechanism 1
4, the input shaft 10 faces in the left-right direction, and the output shaft 11 faces in either the front or rear direction,
In addition, it is constructed of a bevel gear mechanism 13 in which the axes of the two shafts are perpendicular to each other on a horizontal plane, and the input shaft 10 is extended in both left and right directions, with shaft ends located at the left and right ends of the vehicle body 2, and power is generated. Set it on the extraction axis, and
The output shaft 11 is extended, and the shaft end is located at either the front or rear end of the vehicle body 2, and is set as a power extraction shaft.
Also, a bevel gear 23 rotating on the extended axis of the output shaft 11 is engaged with a gear 22 directly connected to the input shaft 10 of the bevel gear mechanism 13, and this gear 2
A shaft 21 directly connected to the output shaft 11 is provided so as to extend in the opposite direction to the output shaft 11, and its end is positioned at the end of the vehicle body 2 to serve as a power take-off shaft.
1 is set to be located between the vehicle body frame 2a and the loading platform 3.