JPS5853517A - Compound working vehicle - Google Patents

Abstract

PURPOSE:To prevent a running transmission from being damaged when a working apparatus is not in operation, in a compound working vehicle equipped with a PTO shaft driving system for a working apparatus driven by a mounted engine, by providing a running transmission driving system having a torque limiter interposed. CONSTITUTION:The output of an engine 3 is transmitted through a pulley 9, belts 11, a pulley 10 and a friction clutch 12 to a PTO shaft 7 to drive a working apparatus. Further the power is transmitted from the PTO shaft 7 through a pulley 14 and a pulley 16 to a running transmission driving system 20 so that an input shaft 18 of a running transmission is rotated. A torque limiter 19 is fixed to the pulley 16 of the running transmission driving system 20. Therefore, when an excess input is provided, due to the action of cam surfaces 21, 22, cam bodies 23, 24 are disengaged against a spring 25, the engagement of the pulley 16 with the input shaft 18 is released, and therefore the excess input is prevented from being transmitted. Thus the transmission is prevented from being damaged.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composite work vehicle having a KPTO shaft drive system so that the power of an on-board engine can be used as driving force for various construction devices.

In this type of combined work vehicle, the engine output line, the output for running rCW, and the output necessary for driving the work equipment are combined, so the engine is large and does not have a work equipment. If the output is increased too much, excessive output will act on the driving transmission, leading to the disadvantage of damaging the driving transmission.

The present invention aims to eliminate this drawback.

In order to achieve this objective, the combined work vehicle of the present invention has a power transmission system from an onboard engine.
A drive system and a traveling mission drive system are provided, and a torque limiter is interposed in the traveling mission drive system.

In other words, if excessive power is input to the driving mission,
The difference between the driving resistance torque and the input torque within the transmission increases, and a phenomenon similar to that caused by an excessive load on the traveling transmission occurs, so as mentioned above, vc@a
This prevents excessive output from the engine from being input to the driving transmission, and eliminates the risk of damaging the driving transmission even if the engine output is significantly greater than the allowable input for the driving transmission. Ta.

As a result, the weight and size of the driving mission can be reduced by setting the allowable input to a minimum level.

Next, the present invention will be explained in detail.

Figure 1 shows an example of a composite work vehicle, with front and rear wheels (1), (
It has nine chassis with an engine +11. 1 page with driving mission (4), loading platform (i), and driver's seat (・)
TO axis (1) Arranged in the longitudinal direction of the machine body, and powered by the front end and rear @ of the machine body. I'm trying to drive the machine using the PTO axis (7) and look at it.

The engine (1st pulley shaft fixed to the output shaft (-) of the engine (3)) and the PTO shaft (7 ) rotatably supported on the second
The first endless Pel) DI) is wrapped in the darkness with Pulley.

A friction clutch is interposed between the PTO shaft (11 and the second pulley) to construct a PTO shaft drive system.
L'' [6ru.

The friction clutch l1m has a boss slidably fitted on the PTO shaft (te), a Vc moving clutch piece at one end, a shift fork lll at the other end, and a bearing in the center.
The Kuu force Δ−@ is maintained through .

Then, fix the third gooley 41 to the PTO shaft (7) and input 111HK of the driving mission (4).
A pulley (111) is rotatably supported, and a second endless belt 9ηt is wound around the eighth and fourth pulleys I and X1.

A torque limiter (llt) is interposed between the first pulley and the input shaft (6) to form a traveling mission drive system (1).

The torque limiter has an inclined cam surface 3 as shown in FIG.
11.@t- Fix one side of the cam body (2) to the fourth pulley, and attach the spline fitting L1 spring aIIIVc so that the other cam body can slide freely onto the input shaft 01. O is configured to be biased in the direction of engagement with the cam body (2) of the fourth gouge. - Due to the action of the spring @ anti-L1
KL''C6 to remove both cam bodies (to) -t-.

The power transmission system may be configured as follows (see Fig. 8). An intermediate shaft is interlocked and connected to the output shaft (1) of one set of engines via a main clutch 611. Fix the first pulley (@1 and the eighth pulley a4) to the
The third pulley (
A first endless belt 0υ is wound around the second pulley (to) and the first pulley (.) to form a PTO shaft drive system 11tilla.

A fourth pulley α is pivotally supported on the input shaft O field of the traveling mission (4) via a torque limiter, and a first endless belt (lη
The traveling mission drive system -tS is constructed by winding the

[Brief explanation of drawings]

The drawings illustrate a rattan slat for implementing the composite work vehicle according to the present invention.
FIG. 1 is a partially cutaway side view showing the whole, FIG. 2 is a longitudinal developed view showing the power transmission system, and FIG. 3 is a longitudinal section #1 showing another power transmission system. +31...Engine, field a-...FTO$
1ilC114, -... Traveling mission drive system, (L@... Torque limiter. Fig. 1 Fig. 3 Fig. 6 Fig. 2

Claims (1)

[Claims] This is a composite work vehicle in which a power transmission system (i) from the installed engine (i), a PTO shaft drive system (II), and a traveling mission drive system (t) are provided, and a torque limiter is interposed in the traveling mission drive system (m).