JP2000054335A - Snow remover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of operating levers by arranging a multi-lever by which a right and left tilting operation of an auger, a moving-up and down operation, and a connecting/-disconnecting operation of the right and left side clutches can be manipulated. SOLUTION: An acceleration bar 80 and a travel speed change lever 81 are arranged with a certain distance from the left side to the right side on an operation panel 5, and a multi-lever 82 is arranged at the forward part of the right side, and further, a feed chute lever 83 is arranged in this side of the multi-lever 82. The multi-lever 82 is fitted onto the operation panel 5 so as to be rotatable in the forward and rearward direction and also the lateral direction. The main body lever 82c is protruded upward from the fitting part 82d, and a handle 82d is firmly fixed to the upper part of the main body lever 82c, and a switch 82a is provided in the handle 82d. The operating lever of the switch 82a projects upward from the nearly central part of the upper face. Accordingly, an operator can operates a right and left tilting motion of an auger, a moving-up and down motion, and a connecting/disconnecting motion of the right and left side clutch by a single hand, and the number of operating levers is reduced, and the operability can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation lever for inclining and raising / lowering an auger in a left-right direction and turning a machine body in a walking type snow plow.

[0002]

2. Description of the Related Art Conventionally, in a walking type snow plow,
2. Description of the Related Art A snowplow having a so-called deadman lever, which is capable of automatically stopping traveling and work of a working machine when an operator releases his / her hand from the working machine, is known. The deadman lever is interlocked with the engine stop device, and the operation of the snow blower is performed while holding the deadman lever together with the steering wheel.If the operator falls and releases his hand from the steering wheel during the driving operation, the engine stops. To prevent the operator and the snowplow from becoming in danger. As shown in FIG. 5, an auger lever 89 and left and right side clutch levers 87 and 88 for operating the left and right inclination and lifting and lowering of the snow removing section are arranged on the panel of the conventional operation section. A chute lever 83 for turning and raising / lowering the chute cap, an accelerator lever 80 and a shift lever 81 are arranged.

[0003]

However, since the deadman lever must be held at all times during running or working, other operations must be performed with one hand. If the number is too large, there is a problem that not only the possibility of operation delay or erroneous operation is increased, but also the efficiency of snow removal work is deteriorated. For example,
While operating the accelerator lever 80 and the traveling shift lever 81 to decelerate the snow blower, the left and right side clutch levers 87 and 88 "disengage" the side clutch inside the turn.
As the auger lever 89
As for the operation of adjusting the height of the auger 26 with respect to the ground, it is necessary to operate at least five levers and at least four levers, which is likely to cause an erroneous operation. Further, since the accelerator lever 80 and the traveling speed change lever 81 are far to the left, the handle 4 and the deadman lever 2 are held with the left hand.
When gripping 0, it was very difficult to operate the lever with one right hand. SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a snow plow having a small number of operation levers and having an operation unit that can be appropriately arranged.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, in an auger capable of tilting and raising and lowering in the left-right direction with respect to the machine, and in a snow blower having a side clutch mechanism for turning the machine, in the left-right tilting operation, the raising / lowering operation of the auger, and the disengagement of the left and right side clutches. A multi-lever capable of engaging and disengaging is arranged so that the auger can be tilted left and right, raised and lowered, and left and right side clutches can be connected and disconnected simultaneously.

[0005] Further, in a snowplow provided with an auger capable of tilting up and down in the left and right direction with respect to the machine and a side clutch mechanism for turning the machine, one multi-lever is arranged on an operation panel. A switch is arranged on the grip portion of the multi-lever, and the left and right and front and rear rotations of the multi-lever main body cause the connection and disconnection of the left and right side clutches and the elevation of the auger, and the auger is tilted left and right by operating the switch. .

[0006]

Next, an embodiment of the present invention will be described. 1 is an overall side view of the snow blower, FIG. 2 is an overall plan view thereof, FIG. 3 is a plan view of an operation panel showing an arrangement of operation levers, and FIG. 4 is a circuit diagram of an operation system.

First, the overall structure of a snow blower according to the present invention will be described with reference to FIGS. The snow removal section D is located at the front of the machine A.
The snow removing part D is provided with an auger 2 for scraping snow at the forefront.
An auger housing 8 is disposed to cover the blower 6, and a blower cover 6 having a blower therein is connected to a rear portion of the auger housing 8 so that the motor M can turn left and right above the upper part of the blower cover 6. A snow chute 7 protrudes. The machine A is covered by a machine cover 1, and an engine E is built in the machine cover 1.
, And the working light 3 protrudes from the upper part of the bonnet 2. A battery B is located behind the engine E.
Is arranged.

An operation section C is provided at the rear of the machine A, and an operation panel 5 and a handle 4 are arranged on the operation section C. The operation panel 5 is provided with an accelerator lever 80, a traveling speed change lever 81, a multi-lever 82 described later, and a snow throwing chute lever 83. Above the handle 4, a deadman switch (not shown) interlocked with an engine stop motor is turned on / off. The deadman lever 20 is disposed. As described above, the deadman lever 20 is gripped together with the handle 4 during operation of the snowplow while traveling or working, and when the operator falls and releases the handle during the driving operation, the engine E is activated. It is configured to stop so that the operator and the aircraft can be prevented from becoming in danger. The deadman switch is disposed below the operation panel 5 so as to prevent snow from adhering to prevent malfunction.

An HST type transmission H and a transmission case T are disposed below the engine E, and are fixed to the body frame 84, respectively. An output shaft 85, which is a rotation fulcrum shaft protruding left and right from the transmission case T.
85 drives the drive shafts 11 of the crawler type traveling device via a chain case 86 serving as a transmission mechanism, and drives sprockets 13 fixed to the drive shafts 11.
Can be rotated. A side clutch (not shown) is provided in the transmission case T. By operating a multi-lever 82 described later, the side clutch on the inside of turning is turned off, and the driving sprocket 13 on the outside of turning in the "contact" state is turned off. It is configured to be able to turn by driving. On the other hand, at the front of the track frame of the crawler type traveling device, there are provided driven idlers 15, 15 rotatably supported by support shafts 14, 14 serving as running driven shafts, and the driven idler 15 and the driving sprocket 13 are provided. Crawler 16 is wound around crawler 13 to form a crawler-type traveling device.

In the traveling device, an electric cylinder 72 for raising and lowering is interposed between the rear portion of the track frame and the operation portion C, and the electric cylinder 72 for raising and lowering is extended and contracted by operating a multi-lever 82 described later. The main unit A can be moved up and down around the output shaft 85, and the auger 26 of the snow removing section D can be moved up and down to adjust its height to the ground.
Further, a snow removal height adjusting plate 10 is provided at the lower end of the blower cover 6 in the snow removal part D, and is grounded.

A drive pulley 23 is provided around an output shaft protruding forward from an engine E provided in the cover 1 of the machine, and a rear portion of the drive pulley 23 is connected to a traveling drive pulley 23a.
In addition, a front portion is formed on a snow removing drive pulley 23b. A pump shaft (not shown), which is a driving force input shaft, protrudes forward from an HST transmission H disposed below the engine E, and connects an HST input pulley 24 and a traveling drive pulley 23a provided around the pump shaft. The driving force is interlocked with the belt and the HS
It is transmitted to the T input pulley 24. The driving force transmitted to the HST input pulley 24 is transmitted from a motor shaft (not shown) which is an output shaft projecting rearward of the HST transmission H to the HST input pulley 24.
The driving sprocket 13 is transmitted to the transmission case T disposed behind the transmission H and drives the driving sprocket 13 through the chain case 86. The snow removing drive pulley 2
3b is connected to an auger pulley 25 provided around an auger input shaft 25a projecting rearward from the blower cover 6 by a belt. The auger input shaft 25a is linked to an auger rotating shaft 91 via a bevel gear (not shown),
The auger 26 and the blower are driven.

The auger input shaft 25a penetrates the auger housing 8, and pivotally supports the auger housing 8 so as to be rotatable in the left-right direction with respect to the machine A. A left-right rotating electric cylinder 90 is interposed between the auger housing 8 and the machine A, and a piston rod (not shown) of the left-right rotating electric cylinder 90 is expanded and contracted by operating a multi-lever 82 described later. When operated, the auger housing 8 and the auger 26 are configured to be inclined in the left-right direction with respect to the machine A.

Fins are formed on the HST input pulley 24 and the auger pulley 25 so that the pulleys can rotate to allow air to be blown rearward. The rotation generates the wind generated by the HST transmission device H and the transmission case T. It is configured to be heated by heat and guided to the operation unit. The warm air warms the operation panel 5, various operation levers, deadman switches, and the like, thereby preventing malfunction due to freezing.

The pump shaft, which is the input shaft of the HST type transmission H, is disposed below the motor shaft, which is the output shaft, and is fitted to the auger pulley 25 and the pump shaft.
The boss portion 24b of the ST input pulley 24 is configured so as not to interfere with each other, and the HST input pulley 25 and the auger pulley 25 can be arranged close to each other in the front-rear direction to save space. The weight balance is good.

The operation lever of the present invention in the snow blower having the above-described overall configuration will be described with reference to FIG. On the operation panel 5, a certain interval is provided in order from the left side, and an accelerator lever 80, a traveling speed change lever 81, a multi-lever 82 is provided in front of the right side, and a snow throw chute lever 83 is disposed in front of the multi-lever 82. ing.

The multi-lever 82 is mounted on the operation panel 5 so as to be able to rotate back and forth and right and left.
From above, the main body lever 82c is projected upward, and a grip portion 82b is fixedly provided above the main body lever 82c, and a switch 82a is provided on the grip portion 82b. The switch 8
The operation lever 2a protrudes upward from a substantially central portion of the upper surface. However, the mounting position of the switch 82a may be on the side,
It is not limited. The left and right rotation of the lever is the same as the left and right tilting (rolling) operation by the conventional auger lever 89, and the left and right rotation of the main body lever 82c is performed by the conventional left and right side clutch levers 87 and 88. And the turning back and forth of the main body lever 82c is the same operation as the lifting operation by the conventional auger lever 89.

Therefore, by employing the multi-lever 82 of the present invention, the number of operation levers can be reduced, so that each operation lever can be arranged with a sufficient space. Troubles such as operation can be avoided. In addition, the left operating lever can be moved to the right side, and the operability with the right hand is greatly improved. Further, by gripping the grip portion 82b and rotating the main body lever 82c back and forth and left and right, the lifting and lowering operation of the auger 26 and the "disengage" and "contact" operations of the side clutch can be easily performed with the same lever. . Further, the user raises his / her palm and grips the main body lever 82c from the side so that it can rotate back and forth and right and left.
2a is also rotatable left and right, in addition to the lifting and lowering operation of the auger 26 and the "disengage" and "contact" operations of the side clutch,
The left and right tilting operation of the auger 26 can be operated with one hand. That is, the operability of the multi lever 82 itself of the present invention is extremely good, and the burden on the operator can be greatly reduced.

Next, an electric control system for raising / lowering operation / horizontal tilt operation of the auger 26 by the multi-lever 82 of the present invention will be described with reference to FIG. When the main body lever 82c is rotated rearward, the contact between the ascending switch 41 is "closed" and an ascending electric signal flows through the relay unit 43, and the ascending and descending electric cylinder 72 is reduced and driven. A pivots rearward about the output shaft 85 to raise the auger 26. When the main body lever 82c is returned to substantially the center when the desired height is reached, the contact between the raising switches 41 becomes "open", and the auger 26 is held at that height.
Conversely, when the main body lever 82c is rotated forward, the contact between the lowering switches 42 is closed and the relay unit 4c is closed.
An electric signal for lowering flows in the electric cylinder 3 and the electric cylinder 7 for elevating and lowering.
2 is driven to extend, and the machine A is rotated forward about the output shaft 85 to lower the auger 26.

When the switch 82a is turned to the right, the position between the right and left tilt switch 40a and the right tilt contact 40a is closed, so that a right tilt electric signal flows through the relay unit 43. Then, the electric cylinder 90 for tilting left and right is driven to contract, and the machine A tilts the auger 26 to the lower right around the auger input shaft 25a. When the switch 82a is returned to the center when the desired inclination is reached, the space between the switch 82a and the right turning contact 40a returns to "open", and the auger 26 is held at that inclination. Conversely, when the switch 82a is turned to the left, the position between the left tilt switch 40 and the left tilt contact 40b is "closed".
As a result, an electric signal for left tilting flows in the relay unit 43, and the left and right tilting electric cylinder 90 is extended and driven,
The machine A is configured to incline the auger 26 to the lower left around the auger input shaft 25a.

[0020]

As described above, the present invention has the following advantages. That is, according to claim 1, in an auger capable of tilting and raising and lowering in the left-right direction with respect to the machine, and in a snow blower having a side clutch mechanism for turning the machine, in the snow removing machine having the left and right tilting operation, the raising and lowering operation of the auger,
The multi lever that can operate the connection and disconnection of the left and right side clutches has been arranged, so that the auger can be tilted left and right, raised and lowered, and the left and right side clutches can be connected and disconnected with one hand, reducing the number of operation levers. The operability was greatly improved. In addition, since a plurality of types of lever operations are combined into one lever operation, erroneous operations are less likely to occur.

Further, since the auger can be operated simultaneously with the left and right tilting operation, the raising and lowering operation, and the connecting and disconnecting operation of the left and right side clutches, the turning operation of the auger can be performed simultaneously with the turning of the machine. As a result, the lifting operation can be performed, the operability can be improved, and the working speed can be increased.

According to a third aspect of the present invention, in the snow remover provided with an auger capable of tilting and raising and lowering in the left-right direction with respect to the machine and a side clutch mechanism for turning the machine, a single multi-purpose device is provided on the operation panel. A lever is arranged, a switch is arranged on the grip portion of the multi-lever, the left and right and front and rear rotations of the multi-lever main body are used to connect and disconnect the left and right side clutches and raise and lower the auger, and tilt the auger left and right by operating the switch. Configuration, the number of levers on the operation panel can be reduced, spatial clearance can be provided between the operation levers, the operation can be easily performed even with one hand, and even when the deadman lever is used, the operator is not required. No longer increase the load.

[Brief description of the drawings]

FIG. 1 is an overall side view of a snow blower.

FIG. 2 is an overall plan view of the same.

FIG. 3 is a plan view of an operation panel showing an arrangement of operation levers.

FIG. 4 is a circuit diagram of an operation system.

FIG. 5 is a plan view of an operation panel showing an arrangement of a conventional operation lever.

[Explanation of symbols]

 5 Operation panel 26 Auger 82 Multi lever 82a Switch 82c Main body lever

Claims (3)

[Claims] 1. An auger capable of tilting and raising and lowering in the left-right direction with respect to the machine, and a snow plow having a side clutch mechanism for turning the machine, in which the auger is tilted left and right.
A snowplow equipped with a multi-lever for raising and lowering operations and for connecting and disconnecting left and right side clutches. 2. The left and right tilting operation, the raising and lowering operation of the auger,
The snowplow according to claim 1, wherein the operation of connecting and disconnecting the left and right side clutches can be performed simultaneously. 3. An auger capable of tilting and raising and lowering in the left-right direction with respect to the machine and a snowplow provided with a side clutch mechanism for turning the machine, wherein one multi-lever is arranged on an operation panel. A switch is disposed on the grip portion of the multi-lever, and the left and right and front and rear rotations of the multi-lever main body cause the connection and disconnection of the left and right side clutches and the lifting and lowering of the auger, and the auger is tilted left and right by operating the switch. And snow remover.