JP2559583B2 - Snow blower engine support structure - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to an engine support structure for a snow blower.

[Prior art]

The snow blower is equipped with driven parts such as an auger and a blower for snow scraping in addition to a traveling crawler, and these driven parts are driven by an engine mounted on the machine body. The power transmission from the output shaft of the engine to the driven part is performed by a winding belt, and the intermittent transmission of the power (clutch operation) by the belt causes the tension of the belt to be tensioned by a belt tension adjusting tool such as a tension adjusting roller.・ It is designed to be performed by relaxing operation. Also,
At least four corners of the engine are supported by the body via elastic supports to prevent vibration.

In the snow blower having such a structure, when a high load is applied, such as when the clutch is engaged by the belt tension adjuster or when removing hard snow, the tension side of the belt wound around the output shaft has high tension. By becoming
There is a phenomenon that the engine sinks diagonally forward.

Conventionally, in order to prevent such an inclination phenomenon of the engine, there is one in which a special stopper is provided in a clutch mechanism or the like as disclosed in Japanese Utility Model Publication No. 57-77017. However, such a configuration is not preferable because it complicates the mechanism by increasing the number of extra parts, increases the cost, and gives a shock when the stopper collides.

[Object of the Invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an engine support structure for a snow blower that prevents an engine tilting phenomenon by a simple mechanism that does not use extra parts such as a stopper.

[Structure of Invention]

According to the present invention for achieving the above object, an engine is disposed above a body, and the engine is always supported by the body via elastic support members arranged at least at four corners of a lower portion of the engine. In the snow remover in which the belt is wound between the driven part on the machine body side and the transmission power is interrupted by the belt tension adjuster attached to the belt, which corresponds to the pulling side of the belt. The elastic support at the corner is located outside the wound belt when viewed from the direction in which the output shaft of the engine extends, and the elastic coefficient in the up-and-down direction is greater than that of the remaining elastic support. Is also characterized in that

1 to 3 show a snow blower according to an embodiment of the present invention, in which 1 is a machine body and 2 is an engine mounted on the machine body.

Crawlers 3, 3 for traveling are provided on the left and right of the lower part of the machine body 1, and an auger part 4, a blower part 5, for snow plowing are provided on the front part
Shoots 6 are provided respectively. The blower unit 5 sucks the snow scraped by the auger unit 4, sends it to the chute 6 by centrifugal force, and discharges it from the chute 6 to the outside of the machine. Further, steering handles 7, 7 are attached to the rear portion of the machine body 1.

The engine 2 is arranged above the machine body 1, and a fuel tank 10 is attached to the upper portion thereof, and an intake portion 11 and an exhaust portion 12 are attached to the side portions thereof. An output shaft 13 projects from the front of the engine 2 and two pulleys 14 and 15 are attached to the ends thereof. Of these, a belt 16 is wound around the pulley 14 and the pulley 18 on the machine body 1 side, and the pulley 18 transmits power to the crawler 3. Further, a belt 17 is wound between the pulley 15 and the pulley 19 on the side of the machine body 1, and the blower section 5 of the pulley 19 transmits power to the auger section 4.

The belt 16 wound around the pulleys 14 and 18 and the belt 17 wound around the pulleys 15 and 19 are provided with tension adjusting rollers 20 and 21 on their slack sides, respectively.
These tension adjusting rollers 20 and 21 are adapted to press the belts 16 and 17 to tension the belt tension by operating a lever (not shown) provided on the handle 7 or to release the belt tension by separating them. There is. When the belt tension is tightened by such an operation, power transmission from the pulleys 14 and 15 to the pulleys 18 and 19 is possible, and when the belt tension is relaxed, the power transmission is cut off. That is, these belts and tension adjusting rollers form a clutch mechanism from the engine output shaft to the driven portion arranged below the engine output shaft.

The engine 2 that transmits power to the driven parts such as the crawler 3, the auger part 4 and the blower part 5 on the machine body side as described above has elasticity made of rubber or the like arranged at the four corners of the lower part of the engine with respect to the machine body 1. It is always supported by the support tools 9a, 9b, 9c, 9d. Among these elastic supports, 9b, 9c and 9d are arranged such that the supporting direction is toward the center of gravity G of the engine 2, but the elastic support 9a that supports the portion corresponding to the tension side of the wrapping belts 16 and 17 is As shown in FIG. 2, when viewed from the direction in which the output shaft 13 of the engine 2 extends, the output belt 13 is located outside the wrapping belts 16 and 17, and its supporting direction is at an angle α with respect to the direction passing through the center of gravity G. Only faces upwards. Therefore, the elastic support tool 9a on the belt pulling side is different from other elastic support tools.
Although it is a component made of the same rubber material and structure as 9b, 9c, 9d, its vertical elastic modulus is larger than that of 9b, 9c, 9d.

In the snow blower described above, when the tension adjusting rollers 20 and 21 are pressed against the belts 16 and 17 to switch the power transmission between the pulleys 14 and 15 and 18 and 19 (clutch connection), or when removing hard snow When doing so, a high load is applied, so that a high tension is generated on the tension side of the belts 16 and 17, so that the engine 2 tends to sink obliquely forward in that direction.

However, in the snow blower of the present invention, the elastic support tool 9a supporting the side where the above-mentioned subduction is about to occur is more elastic support tools 9b, 9c, 9d supporting the other remaining corner portions, Since the elastic coefficient in the vertical direction is large, the engine does not sink. That is, it is possible to prevent the engine from sinking without using extra parts unlike the conventional mechanism using the stopper. Moreover, unlike the mechanism using the stopper, no collision shock occurs.

Further, in the case of the above-mentioned embodiment, since the vertical elastic coefficient of the elastic supporting member that supports the side where the engine sink is about to occur is made larger than that of other elastic supporting members, only the supporting direction is changed. Since the same elastic support tool is used in, the cost can be reduced by sharing the parts.

Of course, in the present invention, different types of elastic supports made of a rubber material or a structure having a large elastic coefficient may be used as the elastic supports for increasing the vertical elastic coefficient.

〔The invention's effect〕

As described above, according to the present invention, among the elastic support tools for supporting at least the four corners of the engine, the elastic support tools at the corners corresponding to the pulling side of the belt around which the engine output shaft is wound are set to the output shaft of the engine. It is located outside the belt when it is viewed from the extending direction, and the elastic coefficient in the vertical direction is made larger than that of the rest of the elastic supports. When a heavy load is applied such as when the clutch is connected by an adjuster or when snow is removed from hard snow, the engine part on the pulling side of the belt does not sink significantly, which allows the extra mechanism like the conventional stopper mechanism to operate. It is possible to prevent the tilting phenomenon of the engine without using complicated parts and without complicating the mechanism.

Further, without providing a stopper, the elastic support tool that constantly supports the engine also serves as the stopper to prevent the engine from tilting, so that a shock of collision such as the stopper does not occur at all.

[Brief description of drawings]

FIG. 1 is a plan view showing a snow blower having an engine support structure of the present invention with a part cut away, FIG. 2 is a view taken along the line II-II of FIG. 1, and FIG. It is a side view which shows and lacks. 1 ... Aircraft, 2 ... Engine, 3 ... Crawler, 4 ...
Auger, 5 ... Blower, 9a, 9b, 9c, 9d ... Elastic support, 13 ... Output shaft, 14, 15 ... (Output shaft side) pulley, 18, 19 ... (Driven part) ) Pulley, 16,17 …… Belt, 20,21 …… Tension adjusting roller (belt tension adjuster).

Claims (1)

(57) [Claims] Claim: What is claimed is: 1. An engine is arranged above an airframe, and the engine is always supported by the airframe via elastic supporting members arranged at least at four corners of the lower part of the engine. In a snow remover in which a belt is wound between the driven part on the machine side and the transmitted power is interrupted by a belt tension adjuster attached to this belt, the elasticity of the corner corresponding to the pull side of the belt The support is positioned outside the wound belt when viewed from the direction in which the output shaft of the engine extends, and the elastic coefficient is provided in the vertical direction,
An engine support structure for a snow blower characterized by being made larger than that of the remaining elastic supports.