JP3803643B2 - Energy-saving power transmission mechanism in a rotary snowplow - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention improves the power transmission mechanism of a rotary snowplow, and generally enables six stages of blower rotation speed using an automobile transmission, thereby reducing forced short-distance snow throwing control by a snow throwing chute. The present invention relates to a mechanism that eliminates waste of energy, and a mechanism that enables switching to a mechanical transmission type with good transmission efficiency when the vehicle is forwarded.
[0002]
[Prior art]
In the conventional rotary snowplow, the auger and blower are driven mechanically, but the snow throwing distance is generally changed in three stages of 20m, 30m, and 40m. The necessary energy was wasted because it was forcibly controlled by the snow throwing chute at a high initial speed.
In addition, since the rotation speed of the auger is not a speed change mechanism that is proportional to the snow removal speed, and since the rotary snow plow is only driven hydraulically, it is also hydraulically driven during vehicle rotation. The higher the speed, the worse the energy efficiency. (See Patent Document 1)
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 8-197984
[Problems to be solved by the invention]
Those described in the prior art have the following problems.
Conventionally, in a rotary snowplow, the largest energy consumption is snow blown by a blower, but what affects this consumption is largely determined by the snow removal amount and the snow throwing distance.
Of these, the part where the energy consumption is particularly large is the part related to the snow throwing distance, and in order to save waste, the part where the initial speed of snow discharge from the blower is controlled by the snow throwing chute is taken out from the blower. It is possible to reduce energy consumption by setting the initial speed of snow removal to a multi-stage shift to an initial speed commensurate with the snow throwing distance.
For this reason, in the conventional one, the change in the snow throwing distance is roughly 3 steps of 20 m, 30 m and 40 m, so if it is less than 20 m, the snow draining chute forcibly removes snow with a high initial speed from the blower. The energy consumption is very wasted because the snow is pressed and pressed into place.
Further, since the auger is simply mechanically coupled directly, it is not an automatic transmission mechanism with a rotational speed proportional to the snow removal speed.
On the other hand, with regard to the forwarding of the rotary snowplow, in recent years, there has been a demand for an increase in the forwarding speed in order to improve the efficiency of the work, but the energy efficiency becomes worse as the speed increases due to the hydraulic drive.
[0005]
The present invention has been made in view of such problems of the prior art, and an object of the present invention is to provide an apparatus capable of solving the above-described problems.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is as follows.
A power distributor is attached to a transmission that is directly connected to the engine of the vehicle, and a power converter is further provided. The power distributor and the power converter have a drive shaft for a blower and a drive for a front axle. The drive shaft is connected to the blower transmission and the auger transmission from the power converter, and the drive shaft is connected from the power converter to the front axle.
On the other hand, a drive shaft is connected from the power distributor to the rear axle, and the power distributor is equipped with a variable hydraulic pump for traveling and a hydraulic motor for traveling so that it is switched to hydraulic traveling during snow removal work, and the auger is also hydraulically driven. Automatic shifting of the auger rotation speed proportional to the snow removal speed becomes possible.
In addition, since the speed of the blower can generally be changed by six gears at the rotational speed of the blower, the snow throwing distance of the snow discharged from the blower is approximately 10 m, 15 m, 20 m, 25 m, 30 m, and 40 m. As a result, the forced control by the snow throwing chute (not shown) is reduced, so that waste of energy consumption is eliminated, and further, switching to a mechanical drive with good transmission efficiency is possible even when the rotary snowplow is routed. It is possible.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples with reference to the drawings.
The energy saving type power transmission mechanism in the rotary snowplow of the present invention is configured as follows.
Referring to FIG. 1, output shaft 1 of transmission 2 directly connected to engine A drives drive shaft 11 by switching operation of clutch 20 of power distributor 3, and drive shaft via power converter 4. 13 drives the blower transmission 18 to rotate the blower 6.
Further, the power distributor 3 is provided with a reverse rotation prevention clutch 22 for maintenance of the traveling hydraulic variable pump 7, and the traveling hydraulic variable pump 7 is attached via the clutch 22, and the generated hydraulic pressure is generated. Is transmitted to the travel hydraulic motor 8, and the rotation of the travel hydraulic motor 8 is driven by the drive shaft 16 via the clutch 21.
Similarly, the front axle 9 is driven by the drive shaft 15 from the drive shaft 12 via the power converter 4 via the clutch 21.
Further, the power from the traveling hydraulic motor 8 is driven by the drive shaft 14 through the switching operation of the clutch 19 inside the power converter 4 to drive the auger transmission 17 to rotate the auger 5 hydraulically.
[0008]
The above-described configuration is a power transmission mechanism at the time of operation, and the rotation of the blower 6 is a mechanical drive.
Since the auger 5, the front axle 9 and the rear axle 10 are hydraulically driven, the rotation of the auger 5 can be automatically shifted in proportion to the snow removal speed, so that waste of energy consumption can be saved.
In addition, overload is applied to the auger and the vehicle stops at the same time as the vehicle stops.Therefore, the load applied to the auger can be reduced and damage can be prevented. By rotating the output shaft in the reverse direction by the gear change of the transmission 2, the blower 6 also rotates in the reverse direction, so that the clogged snow can be easily removed.
[0009]
Referring to FIG. 2, based on the power transmission of FIG. 1, the auger transmission 17 is driven through the drive shafts 11, 14 by driving the auger transmission 17 by driving the clutch 19 in the power converter 4 to switch the power of the output shaft 1. The rotary snowplow can perform work even when the vehicle is stopped and continuously running, and the auger drive is a mechanical drive.
[0010]
Referring to FIG. 3, with reference to the power transmission in FIG. 1, the power of output shaft 1 is routed through power converter 4 via drive shaft 12 in conjunction with the gear in power distributor 3 by the switching operation of clutch 20. Then, the front axle 9 is driven via the drive shaft 15.
Further, the rear axle 10 is driven from the power distributor 3 via the drive shaft 16 and is a mechanical system having a high transmission efficiency by a power transmission mechanism at the time of forwarding the vehicle.
[0011]
【The invention's effect】
Since this invention is comprised as mentioned above, there exists an effect described below.
1. Since the rotation speed of the blower can be changed in 6 steps, energy consumption is reduced because the forced snowing chute reduces the initial speed of snow discharge from the blower for snow throwing distances of approximately 10 m or more. It is effective in eliminating waste.
2. Since the rotary snowplow is a mechanical type with good transmission efficiency, it is effective in eliminating waste of energy consumption.
3. Since the auger and the vehicle travel are the same hydraulic drive system at the time of work, when the overload is generated and the rotation is stopped, the vehicle is also stopped, so that the load applied to the auger is small and damage can be prevented.
4). The reverse operation of the transmission causes the blower to reversely rotate, which is effective in easily removing snow clogged in the blower.
5). The auger rotates reversely by the reverse operation by the traveling hydraulic variable pump, and it is effective in easily removing snow clogged in the auger.
[Brief description of the drawings]
FIG. 1 is a system diagram of a working state of a power transmission mechanism.
FIG. 2 is a system diagram of the power transmission mechanism when the vehicle is stopped and continuously operated.
FIG. 3 is a system diagram of a vehicle transmission state of a power transmission mechanism.
[Explanation of symbols]
A Engine 1 Output shaft 2 Transmission 3 Power distributor 4 Power converter 5 Auger 6 Blower 7 Traveling hydraulic variable pump 8 Traveling hydraulic motor 9 Front axle 10 Rear axles 11, 12, 13, 14, 15, 16 Drive shaft 17 Ogre transmission 18 Blower transmission 19, 20, 21 Clutch 22 Reverse rotation prevention clutch

Claims (1)

In a transmission mechanism for auger and blower and travel power in a rotary snowplow, a power distributor (3) is attached to a transmission (2) directly connected to a vehicle engine (A), and a power converter ( 4), the power distributor (3) and the power converter (4) are connected to a drive shaft (11) for a blower and a drive shaft (12) for a front axle, and the power converter (4 ), The drive shaft (13) is connected to the blower transmission (18), the drive shaft (14) is connected to the auger transmission (17), and the front axle (9) is further connected from the power converter (4). ), And a drive shaft (16) is connected from the power distributor (3) to the rear axle (10). The power distributor (3) has a travel hydraulic variable pump (7). ) And a traveling hydraulic motor (8) are installed and converted to hydraulic traveling during snow removal work. 5) is also hydraulically driven and is configured to be capable of automatic shifting of the auger rotation speed proportional to the snow removal speed. Also, the rotation speed of the blower (6) is generally set to six stages by the shifting operation of the transmission (2). Since shifting is possible, the snow throwing distance of the snow blown from the blower is also in six stages, and the forced short-distance snow throwing control by the snow throwing chute is reduced, so that energy consumption is wasted. An energy-saving power transmission mechanism in a rotary snowplow, which can be switched to a mechanical drive with good transmission efficiency even when the snowplow is being forwarded.

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