JP3305834B2 - Hydraulic circuit of self-propelled ice spreader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled ice spreader which sprinkles artificial snow (fine ice) by self-propelling to a predetermined position of an ice pipe provided on a ski slope or the like of a ski resort. .

[0002]

2. Description of the Related Art In a ski resort, an ice making plant is provided at a mountaintop or the like, and an artificial snowfall facility is provided in which ice made here is turned into a fist-sized ice block and sent to an ice pipe laid along a slope. is there. In such artificial snowfall facilities,
The self-propelled ice spreader moves to an ice block outlet provided at an appropriate interval in the middle of the ice tube, where it receives the ice block and breaks the ice,
Spreading ice in the air. As a self-propelled ice spreader used for such artificial snowfall equipment, Japanese Patent Laid-Open No. 4-000171 is disclosed.
Some are disclosed in Japanese Patent Publication No.

[0003]

This ice-spreading apparatus is provided with a rotary valve for receiving ice blocks sent from an ice making plant through an ice pipe laid on the ground and sending out the ice blocks by a fixed amount, and a rotary valve for sending ice blocks. It consists of a crusher that breaks ice blocks, and a professional that sends air to spread the crushed ice that has been broken by the crusher. The number of revolutions needs to be finely adjustable. In addition, even in a traveling system, fine speed adjustment can be achieved.

[0004] For this reason, the applicant of the present invention has previously proposed, as Japanese Patent Application No. 4-353122, a case in which all the driving sources of the working system and the traveling system are hydraulic motors whose rotation speed can be easily adjusted. The above equipment alone is not sufficient for optimal running according to terrain conditions and optimal ice breaking and ice spreading according to climatic conditions, etc. It requires a function that can dump at an arbitrary angle and equipment such as a winch that facilitates traveling (uphill on a slope), and each of them also requires fine adjustment of the number of revolutions. However, increasing the number of driving sources (hydraulic pumps or hydraulic motors) due to the provision of these equipments increases the size of the apparatus and increases the cost.

The present invention has been made to solve such a problem, and has been devised so that an expanded facility can be driven only by a conventional hydraulic drive facility.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a rotary valve for receiving ice blocks sent from an ice making plant through an ice pipe laid on the ground and sending out a fixed amount of the ice blocks. A crusher that crushes the incoming ice block and a blower that sends air to spread the crushed ice crushed by the crusher are mounted on a dumping platform, and the rotary valve, crusher and blower are each driven by a hydraulic motor. In the self-propelled ice spreader, a winch driven by a hydraulic motor is added to the bed, and the hydraulic motor for the winch and the hydraulic cylinder for dumping the bed are separately connected in series with one of the hydraulic motors. The present invention provides a hydraulic circuit of a self-propelled ice spreader.

[0007]

By taking the above measures, the hydraulic motor for the additional winch and the hydraulic cylinder for dumping the carrier can be driven by the hydraulic motor of the work system conventionally equipped. That is, since the winch and the bed are not operated simultaneously with the ice-spreading operation, the output does not decrease even in this case.

[0008]

FIG. 2 is a side view of a self-propelled ice spreader showing an embodiment of the present invention, and FIG. 3 is a plan view.
A luggage carrier 1 that can be dumped at the rear of a crawler-type self-propelled vehicle 10 by expanding and contracting a hydraulic cylinder 14 around a dump fulcrum 12.
6. An ice spreader that receives ice blocks from an ice block outlet (both not shown) of an ice tube, crushes the ice blocks, and discharges the ice blocks is mounted on the bed 16.

FIG. 4 is an explanatory view of the ice spreading device. The ice spreading device includes a rotary valve 18, a crusher 20, and a blower 2.
2 etc. The rotary valve 18 is provided at a lower portion of the hopper 24. The hopper 24 receives an ice block sent from a branch ice pipe 26 connected to an ice block outlet of the ice pipe, and the rotary valve 18 supplies the ice block. It is sent to the crusher 20.

The crusher 20 is a rotary hammer mainly for crushing ice blocks, and crushes ice blocks supplied from the rotary valve 18. An ice particle adjusting plate 28 is provided below the crusher 20 so as to be movable up and down, and the size of the crushed ice can be set by moving the ice adjusting plate 28 up and down to adjust the gap with the crusher 20. The crushed ice crushed by the crusher 20 is placed in the high-speed airflow of the blower 22 from the ice-pipe 30 connected to the crusher 20 and is scattered in the air.

The blower 22 is composed of a fan, and sends a high-speed airflow to the rotary valve 18 and the crusher 20.
To send to. The rotary valve 18, the crusher 20 and the prower 22 are respectively connected to a hydraulic motor 32,
34, 36 (of which the rotary valve 1
8 requires low-speed rotation.
8 is inserted). In addition, the loading platform 16 is also provided with a winch 40 used when climbing a slope.

FIG. 1 is a hydraulic circuit diagram of a self-propelled ice spreader. The power of an engine 42 is controlled by two hydraulic pumps 4 of a traveling system.
4, 46 and four hydraulic pumps 48, 50, 5 of the working system
It is consumed to drive 2,54. Hydraulic pumps 44 and 46 of the traveling system are mounted on left and right drive wheels, respectively.
An ST motor (not shown) is driven. Among the working hydraulic pumps, the hydraulic pump 48 drives the hydraulic motor 56 of the winch 40 and the hydraulic motor 34 of the crusher 20 in series.

Among the other hydraulic pumps of the working system, a hydraulic pump 50 drives a hydraulic motor 36 of the blower 22, and another hydraulic pump 52 drives a hydraulic brake (not shown) of the traveling system. (In this sense, this hydraulic pump 52 alone may be said to be a traveling system). Further, another hydraulic pump 54 drives the hydraulic cylinder 14 for dumping and the hydraulic motor 32 of the rotary valve 18 in series.

As described above, when the ice-spreading operation is performed, the HST motor is driven to move the ice-spreading device to a specific ice block take-out port (take a backward movement). A winch 40 is used. FIG. 5 is an explanatory view showing this state. Since the anchor 58 is buried near the ice block taking-out port, the tip of the wire 60 unwound from the winch 40 is locked to the anchor 58,
In this state, the HST motor is driven while climbing up the hill while winding the wire 60.

When reaching a specific ice block outlet, a separately provided fixing wire 62 is locked to the anchor 58 to fix the ice spreader so that it does not slip down. Then, the dump lever 64 for extending and retracting the hydraulic cylinder 14 for loading dump is operated to set the loading platform 16 to be horizontal. In this state, the ice block outlet and the rotary valve 18 are connected by the branch ice feed pipe 26, and the hydraulic pumps 48 to 54 of the working system are connected.
Is driven by the rotary valve 18 to receive ice blocks sent from the branch ice feed pipe 26, crush the ice pieces with the crusher 20, and put the ice pieces from the ice spread pipe 30 on the wind of the prower 22.

When this operation is completed, the same operation as described above is performed to move to the next ice block taking-out port. As described above, since the operation of the winch 40 and the dumping of the carrier 16 do not operate simultaneously with the work system equipment, it can be connected in series with the conventional drive system.

The operating device for performing the above-mentioned operations is provided with a select switch (not shown) for switching between "automatic" and "manual". When the start switch is pressed with the select switch set to "Auto", the engine 4
When 0 becomes the rated output, control is performed so that the rotary valve 18, the crusher 20, and the prower 22 are sequentially started by the timer or the controller in this order (in the working form, the downstream side).

Thus, the situation in which the hydraulic pumps 48 to 54 are simultaneously started can be avoided, the load can be reduced, and anyone can easily perform the ice-spreading operation in a predetermined correct procedure. On the other hand, if the select switch is set to "manual", the operator will not start unless the specific ice spreader is turned on,
The so-called manual operation is performed while looking at the object.

[0019]

As described above, according to the present invention, a conventional hydraulic drive system can be used as it is for driving even if a winch or a dump carrier for further improving traveling or work is added.
This makes it possible to prevent the apparatus from becoming larger and the cost from rising.

[Brief description of the drawings]

FIG. 1 is a hydraulic circuit diagram of a self-propelled ice spreader.

FIG. 2 is a side view of the self-propelled ice spreading device.

FIG. 3 is a plan view of the self-propelled ice spreading device.

FIG. 4 is an explanatory diagram of an ice spreading device.

FIG. 5 is an explanatory diagram showing a moving state of the self-propelled ice spreading device.

[Explanation of symbols]

 14 Hydraulic cylinder 16 Packing bed 18 Rotary valve 20 Crusher 22 Prower 32 Hydraulic motor 34 Hydraulic motor 36 Hydraulic motor 40 Winch 56 Hydraulic motor

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Minoru Toyonaga 1-32 Chaya-cho, Kita-ku, Osaka-shi, Osaka Inside Yanmar Diesel Co., Ltd. (56) References JP-A 7-113564 (JP, A) Hei 4-171 (JP, A) Japanese Utility Model 6-84274 (JP, U) Japanese Utility Model 3-73881 (JP, U) Japanese Utility Model 6-171418 (JP, U) Japanese Utility Model 61-136282 (JP, U.S.A.) , U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F25C 1/00-1/12 F25C 1/16-5/18 B60P 3/00

Claims (1)

(57) [Claims] 1. A rotary valve for receiving ice blocks sent from an ice making plant through an ice pipe laid on the ground and sending out the fixed amount, a crusher for breaking the ice blocks sent from the rotary valve, and ice crushing by the crusher. In a self-propelled ice spreader in which a blower that sends air in order to spread ice and a blower that can dump is mounted on a dumping platform and a rotary valve, a crusher and a blower are each driven by a hydraulic motor, the loading platform is driven by a hydraulic motor. A hydraulic circuit for a self-propelled ice spreader, comprising: an additional winch; and a hydraulic motor for dumping the winch and a hydraulic cylinder for dumping the carrier, which are separately connected in series with one of the hydraulic motors.