JPH0130252Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a vibration and noise prevention device for combine harvesters.

(B) Prior Art In the structure for supporting an engine in a vibration-isolated manner, a technique in which vibration-proof rubber is arranged in an inverted "C" shape is known to the public.

(c) Problems that the invention aims to solve The following problems occurred with the engine support device that supports the engine in a floating state using anti-vibration rubber to prevent engine vibrations from being transmitted to the chassis. be.

In other words, because the engine is floating freely on the chassis, the engine vibrates near the engine resonance point with the same amplitude as the resonance state, and in the case of V-belt transmission, belt tension decreases and belt slip occurs. It is.

In addition, the tension in the V-belt increases temporarily when the combine harvester's travel clutch and reaping clutch are engaged, and since the engine is in a floating state, it is pulled toward the counter pulley, causing the V-belt to slip. It occurs.

In order to solve this situation, the present invention has a stopper protruding from the chassis to prevent the engine from moving beyond a certain level.

(d) Means for solving the problem The purpose of the present invention is as described above. Next, the configuration for achieving the purpose will be explained.

A vibration-proof rubber receiver 10 opened in the shape of an inverted "C" is provided on the chassis 6, and a vibration-proof rubber receiver 11 in the shape of an inverted "C" is also provided from the engine, and a vibration-proof rubber 9 is interposed between the two. and supports the engine 5,
The vibration isolating rubber 9 is arranged on the horizontal plane on which the crankshaft to which the output pulley 16 is fixed is arranged, and furthermore, the contact plate 12 is protruded from the engine 5 at a position near the output pulley 16 on substantially the same plane, and the shear seat Stopper 18 that contacts the contact plate 12 from 6
It is a projecting structure.

(E) Embodiment The purpose and structure of the present invention are as described above. Next, the structure of the embodiment shown in the attached drawings will be explained.

Fig. 1 is an overall side view of the combine, Fig. 2 is a front view of the engine vibration isolation support device, Fig. 3 is a side view of the same, and Fig. 4 is a side view with only the engine section taken out.
FIG. 5 is a plan view of the stopper 18, and FIG. 6 is a side view of the stopper 18.

In FIG. 1, the engine part D is arranged in a hidden part on the back side of the thresher B, and the V-belt 17 is wound around the counter pulley 2 from the engine 5 in this part.

Power is transmitted from the counter pulley 2 to the pulling device A and the reaping conveyance device C by a V belt wound around the reaping conveyance input pulley 24, and to the handling barrel of the threshing device B via the V pulley 22. Power is transmitted to the sorting device of the threshing device B from the V-pulley 23.

Further, power is transmitted to the crawler-type traveling device 1 to an input pulley of the transmission case 3. In this way, power is transmitted from the counter pulley 2 to all parts.

The present invention relates to the configuration of the engine section D.

In FIGS. 2 and 3, an engine compartment 14 is configured in a box shape, and an engine 5 and an air cleaner 13 are housed within this engine compartment 14. Further, a radiator 4 and a radiator fan 15 are provided on the upper surface of the engine compartment 14. The air cleaner 13 is placed on the upper surface of the engine 5 within this engine room 14.

In the engine support device of the present invention, anti-vibration rubber receivers 10a and 10b are provided which open from the chassis 6 side in an inverted "C" shape.
The anti-vibration rubber receiver is 10a, 1 so that it can receive 9.
0b... are provided in four locations. Vibration isolating rubber holders 9, 9, 9, 9 are interposed on this anti-vibration rubber receiver 10, and anti-vibration rubber receivers 11, 11, 11, 11, which are also in the shape of an inverted "C" and protrude from the engine side. sandwiched between.

The vibration isolating rubbers 9, 9, 9, 9 are arranged on the same horizontal plane and at substantially the same height as the plane on which the crankshaft of the engine 5 is arranged horizontally.

The structure of the anti-vibration rubber is that an elastic body made of a rubber material is provided in the center, and this elastic body is baked and fixed to the mounting plate at the top and bottom. Mounting bolts 9a, 9 on the upper and lower mounting plates
b is fixedly installed. These mounting bolts 9a, 9b
are inserted into the anti-vibration rubber receivers 10 and 11 and tightened and fixed.

Therefore, no bolt is passed through the inside of the elastic body portion of the vibration isolating rubber 9, making it completely flexible. The engine 5 consists of these four anti-vibration rubbers 9, 9,
Since it is supported only by 9 and 9, it appears to be floating, and can vibrate more freely than conventional models that are directly fixed to the chassis.

Although this has the effect of not transmitting the vibrations of the engine 5 to the chassis 6, it also has the disadvantage that the engine 5 swings freely.

The tip of the crankshaft projects from the engine 5, and a flywheel 7 and an output pulley 16 are fixed to the tip.

Further, a contact plate 12 for a stopper 18 is provided on the side surface of the engine 5 on the counter pulley 2 side, and the stopper 18 is provided toward the engine 5 side from the stopper support 8 erected on the chassis 6. It is configured to abut against.

As described above, the stopper 18 and the abutment plate 12 are also arranged on substantially the same plane as the crankshaft plane on which the anti-vibration rubbers 9, 9, 9, 9 are arranged. The arrangement is such that when the belt 17 is wound and pulled laterally, the amount by which the engine 5 swings is reduced.

In addition, the stopper 18 and the contact plate 12 are arranged near the output pulley 16 in the engine 5, and are arranged in a position where the tension force of the V-belt 17 can be easily balanced. .

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

First, since the anti-vibration rubbers 9, 9, 9, 9 are arranged on the same plane as the plane on which the crankshaft is arranged, the V-belt 17 is hung on the output pulley 16 fixed to the crankshaft, and the When the V-belt 17 is stretched, the change in tension of the V-belt 17 is directly applied to the vibration-isolating rubbers 9, 9, 9, 9, so that the engine 5 does not rotate momentarily around the vibration-isolating rubber 9.

Second, the tensile force by the V-belt 17 is applied to the plane of the crankshaft, and the vibration-proof rubbers 9, 9, 9, 9 are arranged on the plane, and the stopper 18 and the abutment plate 12 are also placed on the same plane. By placing
The tensile force generated by excessive tension in the V-belt 17 when the engine is started or when the clutch is engaged or disconnected is received by the stopper 18 on the same plane on which vibration-proof rubbers 9, 9, 9, 9 are arranged. can,
Since these forces can be balanced within the same plane, the tilting and shaking of the engine can be reduced.

Thirdly, since the stopper 18 and the contact plate 12 are provided near the output pulley 16 side of the engine 5, the stopper 18 can prevent the swinging at a position near the point of application of the force by the V-belt 17. , it can definitely fulfill the role of a stopper.

[Brief explanation of the drawing]

Figure 1 is an overall side view of the combine, Figure 2 is a front view of the engine vibration isolation support device, Figure 3 is a side view of the same, Figure 4 is a side view with only the engine taken out, and Figure 5 is a plan view of the stopper 18. 6 are side views of the stopper 18. 2... Counter pulley, 5... Engine,
6... Seat, 9... Anti-vibration rubber, 10, 11
... Vibration-proof rubber receiver, 12 ... Contact plate, 16 ... Output pulley, 18 ... Stopper.

Claims (1)

[Scope of utility model registration request] A vibration-proof rubber receiver 10 opened in the shape of an inverted "C" is provided on the chassis 6, and a vibration-proof rubber receiver 11 in the shape of an inverted "C" is also provided from the engine, and a vibration-proof rubber 9 is interposed between the two. and supports the engine 5,
Anti-vibration rubbers 9, 9, 9, 9 are arranged on the horizontal plane on which the crankshaft to which the output pulley 16 is fixed is arranged, and are further abutted from the engine 5 at a position near the output pulley 16 on substantially the same plane. This is an engine vibration isolation support device for a combine harvester, characterized in that a plate 12 protrudes and a stopper 18 that abuts the abutment plate 12 from a shear sheath 6 protrudes.