JPH0638899Y2 - Operation device for snow removal blade with wing plate of slope maintenance vehicle - Google Patents

Description

TECHNICAL FIELD The present invention relates to an operating device for a snow removal blade with a wing plate of a slope maintenance vehicle.

2. Description of the Related Art At present, as the ski population increases year by year, there is an increasing need for ski slope maintenance at each ski resort that is compatible with various skier technologies.

Ski resorts are becoming larger and new developments are flourishing, demand for slope maintenance vehicles is increasing, and maintenance work is done at night to ensure the safety of skiers, which is a time constraint. Is the current situation. Therefore, recent slope maintenance vehicles place importance on work ability, and at the same time, are equipped with highly efficient work devices such as snow blades with blades, and their operability is also an important factor. In particular, the snow blade with wing plate is capable of performing a wide variety of operations so as to be able to work on snow in response to various situations on the slope.

FIG. 4 (a) is a diagram showing an example of a snow removal blade provided on a slope maintenance vehicle.

The snow blade A has blades 2 on both sides of the central snow blade 1.
R and 2L are pivotally attached, and can be opened and closed within an angle range around the pivot axis in the directions of arrows a, b and directions of c and d.
4 (b) and 4 (c) are a horizontal sectional view and a vertical sectional view of the snow removal blade A, respectively. The snow removal blade A is attached to the front of the slope maintenance vehicle 20 via a link mechanism, a hydraulic cylinder, and the like (not shown), and the left and right end shoulders are lowered and the shoulders are tilted upward.
e, f, vertical swing motion g, h, horizontal swing motion i,
The configuration is such that j and vertical ascending / descending operations k and l are possible.

As described above, as an operating device when the driven member is moved, tilted, rotated, or tilted in various directions, an operation grip extending in the lateral direction is attached to the upper end of one lever, and the operation grip is provided in each direction. The operation lever, which can be tilted down and rotated around the axis of the lever, is operated in almost the same direction as the operation of the driven member, and the switch provided on the surface of the operation grip is pressed by the finger of the hand holding the grip. A so-called joystick-type operating device, which is used for a control stick of an aircraft, which is operated to operate a driven member in response to each operation, is well known.

Japanese Utility Model Laid-Open No. 59-121019 discloses a snow removal board control device for a snow-covered snow vehicle using this type of control stick. The snow removal board operated by this device is the same as that explained in FIG. As shown in Fig. 5, the operating rod is a rod 30
A horizontally extending operation grip 31 is attached to the upper end of the
On the front surface of the operation grip 31, a seesaw switch 32 arranged vertically in the central portion, and seesaw switches 33, 34 arranged laterally on both sides thereof are provided. The rod portion 30 engages with the cross-shaped guide groove 35, and can reciprocate only in the front-rear direction and the left-right direction. The four switches 36, 37, 38, 39 are pressed by the tilting operation of the control stick to the front, rear, left and right, and the switches 40, 41 are pressed by the rotation of the operation grip 31. On / off signals of these switches and seesaw switches 32, 33, 34 provided on the operating grip 31 are input to the microcomputer of the control unit to control the control valve of the hydraulic cylinder that drives the snow removal plate, The snowboard is caused to perform a predetermined action corresponding to each operation of the operating rod.

In the control device disclosed in this publication, the operation of the operating rod and the operation of the snow removal plate correspond to each other as shown in Table 1.

By the way, in the above-mentioned control device, the seesaw switch 32 for swinging the snow removal plate in the vertical direction is provided in the vertical direction at the center of the front end of the operation grip 31, but the palm is placed on the operation grip 31. It is quite difficult to select and press the upper and lower pressing parts of the seesaw switch arranged in the vertical direction with the middle finger of the hand that holds the grip.

In addition, since there are many types of movements of the snow removal plate to be controlled, it cannot be completely controlled only by tilting and rotating the control stick in various directions.
Three seesaw switches are provided on the operating grip so that the left and right blades of the snow removal plate can be opened and closed by pushing the inside and outside of the seesaw switches 33, 34 provided on the left and right sides of the front of the grip, respectively. Has become. Since these seesaw switches are provided in the left-right direction, the index finger and the ring finger of the hand holding the grip are moved to the left and right, but this operation is also difficult to perform.

The left and right blades can be used not only to open and close one of them individually, but also to open and close both blades at the same time, or to open one and close the other. In many cases, if two blades can be operated at the same time, rather than pressing the two seesaw switches sequentially and moving them separately, the work efficiency is improved. However, it is extremely difficult to press the left and right seesaw switches at the same time, and even if the seesaw switches are operated at the same time, there is a possibility that an erroneous operation may increase.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In consideration of the above-mentioned drawbacks of the above-described conventional snow-discharging blade control device with a wing plate of a control stick type slope maintenance vehicle, the present invention uses the number of switches as small as possible, and yet the snow-discharging operation is performed. Left and right blade blades can be operated independently and simultaneously, and the push-down switch and seesaw switch provided at the minimum provide an operation device for the snow removal blade provided in a position and direction that facilitate push operation. This is an issue.

Means for Solving the Problems The present invention provides the first half of the above problems, that is, the number of switches is reduced as much as possible and it is possible to operate the snow removal blade vanes left and right independently and simultaneously. The grip is provided with a push-down switch, and the push-down switch is not pushed down, the operation lever is tilted, the grip is turned, and the seesaw switch is pushed and lifted to raise and lower the snow removal blade, tilt left and right, Snow removal is performed in response to the tilting operation of the operating lever, the turning operation of the grip, and the pressing operation of the seesaw switch, which are performed by swinging left and right, swinging up and down, and pushing the push-in switch. The invention is characterized in that the blades on both sides of the blade are opened and closed in various modes.

Further, in order to solve the latter half of the above-mentioned problem, the seesaw switch is characterized in that it is provided in a vertical direction on the side face against which the thumb touches when the operating grip of the operating lever is gripped for operation.

The above-mentioned operating lever is installed so that it can be reciprocally tilted in all directions around 360 °, and can be used for tilting the operating lever in the front-rear direction, left-right direction, turning the grip left and right, and pressing the seesaw switch. The efficiency can be further improved by making it possible to simultaneously perform a plurality of operations for ascending / descending, leftward / rightward inclination, left / right swinging swing, and up / down swinging swing of the corresponding snow removal blades.

Effect According to the first invention described above, the operation lever is tilted and the grip is rotated without pushing the push-type switch.
Pressing the seesaw switch moves the snow removal blade up and down, tilts left and right, swings left and right, and swings up and down according to each operation. The same operation lever, grip, and seesaw switch that are used when the push-down switch is pushed. Since it is possible to perform various opening and closing operations of both blades by operation, by providing one push-down switch, it is possible to perform twice the same operation, making it difficult to operate seesaw switches, etc. As a result, it is possible to reduce the number of operations, facilitate the maneuvering operation, and easily perform the simultaneous opening / closing operation of both side blades, which is desirable for snow-covering work.

According to the second invention, since the seesaw switch can be pushed by moving the thumb in the vertical direction with the thumb of the hand holding the grip, the operation can be performed smoothly and easily, and erroneous operations are reduced.

According to the third invention, a plurality of operations can be performed at the same time, so that the work efficiency is improved.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a view showing an embodiment of an operation lever of a snow removal blade with blades of a slope maintenance vehicle to which the present invention is applied.

The operating lever has substantially the same shape as that of the previously proposed one described with reference to FIG. 5, and is constructed by connecting an operating grip 4 extending in the lateral direction to the upper end of one lever 3 in a T-shape. When the palm of the right hand is placed on the operation grip 4 and the operation grip is grasped, the left side surface on which the thumb hits is obliquely rearward, and the seesaw switch 5 is provided in the vertical direction on the side surface. In addition, a push-in switch 6 is provided substantially in the center of the front surface of the operation grip.

The operation lever can be reciprocally tilted in all directions of 360 ° around the lever axis, not only in the front / rear and left / right directions. The tilt direction and the tilt amount are provided at the lower end of the lever 3. It is detected by four switches with pilot valves 7,8,9,10 which are engaged with four points on the lower, front, left and right sides of the conical plate.

The operation grip 4 is rotatable about the axis of the lever 3, and includes switches 11 and 12 fixed inside the operation grip 4 and an operation member fixed to the upper end of the lever 3 which does not rotate. The rotation direction is detected by the engagement of.

Since the operating lever of this embodiment has the above-described configuration and shape, when the palm of the right hand is placed on the operating grip 4 and the operating grip 4 is gripped as shown in FIG. 2, the belly of the index finger is pushed. It can be pushed very easily in the direction of arrow u when hitting the pushing surface of the switch 6. Also, the belly of the thumb hits the seesaw switch 5 provided in the vertical direction, and by moving the thumb up and down, the upper and lower pressing surfaces of the seesaw switch can be selectively pushed in the direction of arrow s or t. By moving the arm of the hand holding the operation grip 4 back and forth and left and right, the operation lever 3 can be tilted in the front and rear directions m and n and in the left and right directions o and p. By turning, the operation grip 4 can be turned in the directions of arrows q and r.

The pushing operation of the push-in switch 6 and the seesaw switch 5, the tilting operation of the lever by the operation grip, and the turning operation of the grip are suitable for the position and shape of the switch and the grip to be ergonomically operated. The operation is performed smoothly without fear of erroneous operation.

The correspondence between the operation of the control lever and the operation of the snow removal blade of the device of this embodiment is as shown in Table 2 below.

By combining the forward and backward tilting of the operating lever when the push switch is turned off, the horizontal tilting, the grip left and right rotation, and the seesaw switch pushing at the same time
The operations of the corresponding snow removal blades can be performed simultaneously. FIG. 3 shows a control drive circuit for correspondingly operating the snow removal blade by operating the steering lever and the switch.

Switches 7,8,9,10 that are activated by tilting the operating lever 3,
ON / OFF signals of the switches 11 and 12 push-in switch 6 and the seesaw switch 15 which are operated by the rotation of the operation grip 4 are input to the microcomputer 5 to cause the operation of the snow removal blade corresponding to each operation of the operation lever and the like. The directional control signal is input to the electromagnetic directional control valves 16 and 17 that perform each operation to switch the hydraulic circuit to guide the hydraulic pressure of the hydraulic pumps 18 and 18 'to the hydraulic actuators that perform the respective operations and operate them.

Further, the tilting amount of the operating lever 3 is input to the flow rate adjusting direction switching valve via the pilot valve 13, and the operating speed can be controlled so that the operating speed becomes the operating speed according to the tilting amount.

In the above hydraulic circuit, two hydraulic pumps 18 and 18 'are provided, and among the functions of the snow blade with blades, considering the frequency of use of each function and the frequency of combined use of simultaneous operations, the hydraulic pressure of each function is considered. It is possible to properly distribute the system and compensate the flow rate.

For the adjustment of the operation speed, an electric control method via the microcomputer 15 can be adopted.

As described above, according to the present invention, the push-type switch is provided on the operation grip, and by turning on / off the operation switch, the operation lever is tilted, the operation grip is rotated, and the seesaw switch is operated by the discharge operation. The operation of the snow blades can be selectively obtained for each two, so the number of operation parts such as switches can be reduced, the operation becomes easier, and the operation of simultaneously opening and closing both blades is also possible. , It is effective in improving the efficiency of snow-control work. Further, since the shape of the steering grip and the position and shape of the switch provided on the steering grip are suitable for ergonomics, the operation becomes easy and the effect of preventing erroneous operation can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing the construction and shape of an embodiment of a snow removal blade operating lever with a wing plate according to the present invention, FIG. 2 is a perspective view showing a gripping state of the operating lever, and FIG. 3 is an apparatus according to the present invention. Circuit diagram showing an example of the hydraulic circuit configuration of FIG.
(B), (c) is a perspective view, a horizontal cross-sectional view and a vertical cross-sectional view of a snow removal blade with a wing plate, and FIG. 5 is a perspective view showing an example of a conventionally proposed snow removal blade control lever. 1 …… Central snow removal blade} A …… Snow removal blade with blade 2L, 2R …… Wing plate} A …… Snow removal blade with blade 3 …… Lever (rod) 4 …… Operating grip 5 …… Seesaw Switch, 6 …… Press-in type switch 7,8,9,10,11,12 …… Switch 13 …… Pilot valve

Claims (3)

[Scope of utility model registration request] 1. A snow removal blade comprising a central blade and left and right blades connected to the front portion of the vehicle body, the operation being provided in the driver's cab of the vehicle body and extending laterally at the upper end of the rod portion. Has an operating lever that has a grip and is capable of tilting in each direction and rotating the operating grip around the axis of the rod. The operating lever is tilted, the operating grip is rotated, and the surface of the operating grip. The slope maintenance that allows the snow removal blade to move up and down, tilt left and right, swing left and right, swing up and down, and open and close the blades in response to various operations of pressing the switch In an operation device for a snow removal blade with a wing plate of a vehicle, a push-type switch is provided on the operation grip, and the push-down switch is operated without pushing down, the operation lever is tilted, the grip is turned, and the seesaw switch is pushed. In response to the operation, the snow blade is moved up and down, left and right tilted, left and right swinging swing, up and down swinging swing movement, and the operation lever is tilted and the grip is rotated by pushing the push-type switch. An operation device for a snow removal blade, which is configured to perform various modes of opening / closing operations of both side vanes of the snow removal blade in response to the pressing operation of the seesaw switch. 2. The slope maintenance vehicle according to claim 1, wherein the seesaw switch is provided in a vertical direction on a side surface which a thumb touches when the operation grip of the operation lever is gripped for operation. Operation device for snow removal blades. 3. The operation lever is provided so as to be capable of reciprocating inclining operation in all directions of 360 ° around a shaft, and the operating lever is tilted in the front-rear direction, the left-right direction, the grip is rotated left and right, 2. A plurality of operations can be performed at the same time by a combination of corresponding operations, such as lifting and lowering of the snow removal blade, tilting to the left, right, swinging left and right, and swinging up and down corresponding to the pressing of the seesaw switch. The device for operating the snow removal blade of the slope maintenance vehicle described in.