JPH11323864A - Blower housing for snow remover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a housing of a blower for blowing up snow raked in by a snow removing section so that a snow-throwing distance by a snow- throwing chute can be lengthened by increasing air force. SOLUTION: Snow raked in by a snow removing section is blown up by a blower 16, and snow is thrown through a snow-throwing chute in the snow remover. The place of a snow-throwing port 30 formed to the housing 29 for the blower 16 is displaced and set at a specified angle (30 deg.) to a section upper than the center O of the housing 29 at that time. Air force discharged from an outlet 30b is increased by making the area of the inlet 30a of the snow- throwing port 30 wider than that of the outlet 30b of the snow-throwing port 30, and a snow-throwing distance by the snow-throwing chute can be lengthened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower housing for a snow blower in which a blower housing that blows up the snow scraped by a snow removing unit is improved so that the wind force can be increased to extend the snow throwing distance by a snow throwing chute. .

[0002]

2. Description of the Related Art Conventionally, there has been known a snow removing machine in which snow scraped by a snow removing section is blown up by a blower and thrown through a snow throwing chute.

As shown in FIG. 7, a conventional blower housing A has a snow opening B directly rising vertically upward from a circumferential portion thereof. Since the area of the entrance C and the area of the exit D are the same or the area of the exit D is larger, the area of the snow throwing port B does not change at the initial velocity of the snow thrown from the blower. There was a limit to trying to increase the snow throw distance by shooting.

[0004]

As described above, in the conventional blower housing A, the position of the snow opening B and the entrance C
There was a limit to the snow throwing distance due to the area of the exit D and the exit D, and improvement was desired. The present invention has been made to solve the above problems.

[0005]

In order to achieve the above object, the present invention provides: In a snow blower in which snow blown by a snow removing unit is blown up by a blower and snow is thrown through a snow throwing chute, a position of a snow opening formed in a housing of the blower is set to be higher than a center of the housing. It is characterized by being provided at a predetermined angle.

B. The present invention is characterized in that the entrance area of the snow opening is larger than the exit area of the snow opening.

[0007]

With the above arrangement, the blower housing of the snow blower according to the present invention operates as follows.

[0008] By disposing the position of the snow opening formed in the housing of the blower at a predetermined angle above the center of the housing, the centrifugal force and the rotational force of the blower at the moment the rotating blade of the blower is located at the entrance of the snow opening. The resultant force works on the snow, and the snow is thrown.

[0009] By making the entrance area of the snow exit larger than the exit area of the snow exit, the snow thrown from the entrance of the snow exit by the rotating blades of the blower is accelerated from the exit of the snow exit and the snow throw chute The snow is thrown through, and the snow throw distance can be lengthened.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be specifically described below with reference to the accompanying drawings. 1 to 3
In the figure, reference numeral 1 denotes a walking type snow plow.
Is equipped with a pair of left and right crawler traveling devices 3 on the lower side of the base 2, mounts the engine 4 and a hydraulic device on the base 2, and has a hydraulic stepless on the lower portion of the base 2 behind the engine 4. A transmission (transmission mechanism) 6 including a transmission (HST) 5 is mounted, and a bar-type steering handle 7 is provided above the transmission.
And a control unit 8. An operation panel 8a having a length substantially equal to the body width of the control unit 8 is provided with various operation devices described later. On the front side of the base 2, a snow removing section (auger section) 9 capable of vertical movement adjustment (or floating) and rolling control, and snow that extends upward from the snow removing section 9 and is scraped into the snow removing section 9. A snow throwing chute 10 in which the direction and the snow throwing distance can be adjusted is provided, and the snow removing work is performed together with the forward running of the aircraft.

The transmission 6 is continuously variable by means of a continuously variable hydraulic transmission 5 and a transmission gear. The transmission is connected or disconnected via a side clutch and a differential device to continuously change the speed of the crawler traveling devices 3 and 3. To run.
In addition, a brake device is provided in connection with the differential device. As shown in FIG. 4, an operator who operates the operation panel 8 a at the right side in the length direction (almost at the center) may be operated by a snow removal unit 9. The side clutch, the differential mechanism, and the brake are operated by the left and right tilting operation of the snow removing unit lifting / lowering and the body left / right turning lever 11 disposed at a position where the side of the body can be easily seen. A spin turn (super pivot) is performed when the lever 11 is strongly tilted.

The base 2, on which the engine 4 and the hydraulic device are mounted, has a front end side as a free end, and a rear end part via a pair of left and right support stays 12, a transmission 6, a steering handle 7, and a steering section 8. And the like, and is pivotably mounted on the front end of the base 2 supporting the crawler traveling devices 3 and 3 so as to be vertically rotatable. Up and down movement (elevation and lowering) is possible by the expansion and contraction operation of a hydraulic cylinder (not shown). The expansion / contraction operation of the hydraulic cylinder, that is, the raising / lowering operation of the snow removing unit 9 is performed by the forward / backward tilting of the snow removing unit lifting / lowering left / right turning operation lever 11. When the hydraulic cylinder is set free, the snow removing section 9 performs the snow removing operation in a floating state.

At the front left and right central portions of the base 2, the rear left and right central portions of the snow removing section 9 are supported rotatably left and right via a rotation support portion 13. Is transmitted to the snow removing section 9 side, and the snow removing section 9 is driven. A hydraulic cylinder (not shown) is interposed between the rotation support section 13 and the base 2, and the snow removing section 9 and the snow throwing chute 10 are controlled to rotate left and right (rolling) by the expansion and contraction operation of the hydraulic cylinder. The expansion / contraction operation of the hydraulic cylinder is performed by a snow removal section rolling operation lever 14 provided on the operation panel 8a.
The operation is performed by switching a solenoid valve (not shown) by an automatic / manual switching lever (not shown).

The switching between expansion and contraction and free operation of the hydraulic cylinder for rotating the snow removing section 9 left and right is performed by the automatic / manual switching lever, whereby the rolling of the snow removing section 9 is switched between automatic and manual. Then, when the rolling of the snow removing section 9 is switched to manual, the rolling of the snow removing section 9 is controlled by tilting the snow removing section rolling manual operation lever 14 in the left-right direction. Further, even when the rolling control of the snow removing section 9 is set to the automatic horizontal state, the manual operation by the snow removing section rolling control dial 15 is possible, and when the manual operation is released, the snow removing section 9 returns to the automatic horizontal state, and the snow removing section 9 returns. An automatic level control device capable of performing automatic level control even when the rolling control of No. 9 is controlled to an inclined state is provided. All of these controls are performed in connection with the electronic control circuit.

The snow removing section 9 includes a lower auger and an upper auger, and scrapes the opposing snow with the advancing body and collects the collected snow at the center from both left and right sides, and a blower 16 provided at the left and right middle rear of the lower auger. Snow is thrown upward through the snow throwing chute 10. In addition, snow throw chute 1
0 changes the snow throwing direction by rotating the chute turning portion 10a, and adjusts the snow throwing distance by changing the vertical angle of the head by the snow throwing distance adjusting mechanism 10b. Grounding sleds 17 are provided at both left and right ends of the snow removing section 9, and when the rolling of the snow removing section 9 is set to automatic, the snow removing section 9 moves in a ground contact state or a snow contact state.

The chute rotating portion 10a of the snow throwing chute 10
The operation of the snow throwing distance adjusting mechanism 10b is performed by a snow throwing distance / direction adjusting switch 1 provided at the top (or near the top) of the snow removing section elevating / lowering left / right turning lever 11.
8, the snow throwing distance adjusting mechanism 10b is activated when tilted to one side in the left and right direction, and the snow throwing distance is activated when the tilt is made to the other side in the left and right direction. Each is adjusted.

The control section 8 includes a snow removing clutch 19 for connecting and disconnecting power to the lower auger, upper auger and blower 16 of the snow removing section 9, a throttle lever 20 for controlling the number of revolutions of the engine 4, and an engine 4. Transmission 6
To turn on / off the power to
A traveling clutch 21 that is turned off, a speed adjusting lever 22 that switches the rotational speed of the body forward / reverse, and a snow removal unit at a continuously variable speed, an emergency stop switch 23, and the like are provided. An emergency stop lever 24 is provided below the steering handle 7, and a light 25 is provided above the center of the fuselage.

As shown in FIG. 5, the speed adjusting lever 22 is connected to a transmission rod 26 of the transmission 6 and also to a link lever 5a of the continuously variable hydraulic transmission 5 by a link rod 27.
Is provided with a spring cylinder (cylinder mechanism) 28 whose length changes when a predetermined pressure or more is applied. When a pivot turn or super pivot turn operation is performed while the body is running at a high speed, no hydraulic pressure is applied. The length of the link rod 27 is changed by operating the spring cylinder 28 by the operation reaction force of the step transmission 5.

When the speed adjustment lever 22 is shifted to the high-speed running range and the body is running at high speed, the operation of raising / lowering the snow removing section and turning the body left / right turning operation lever 11 to turn the body at the base position or super base position is performed. Then, the pressure of the pressure oil of the hydraulic continuously variable transmission 5 increases, and an operation reaction force acts on the link lever 5a, and the spring cylinder 28 of the link rod 27
Is extended, the link rod 27 is lengthened, and the pivot turn or super pivot turn is performed in a state where the pressure of the hydraulic oil of the hydraulic continuously variable transmission 5 is reduced. As a result, the pivoting speed or the pivot pivoting speed of the fuselage is alleviated, and the pilot who holds the steering wheel 7 can follow the aircraft without swinging around. When the pivot turn or the super pivot turn is completed, the pressure of the hydraulic oil in the hydraulic continuously variable transmission 5 decreases, the spring cylinder 28 contracts to its original state, the length of the link rod 27 decreases, and the body speed increases. Adjustment lever 22
It travels in the high-speed traveling state set by.

The blower 16 is provided such that the position of the snow opening 30 formed in the housing 29 is shifted from the center O of the housing 29 by 30 °. Further, the rotating blades 31 that rotate around the center O of the housing 29 and throw the snow have a receding angle of approximately 10 ° in order to prevent the snow from hitting the wall surface of the snow opening 30 (to prevent a friction loss). Is provided. At the moment when the rotary blade 31 is located at the entrance of the snow opening 30, the centrifugal force F ₁ becomes a resultant force F with the rotating force F _2, and snow is thrown. Here, the area of the entrance 30a of the snow opening 30 is larger than the area of the exit 30b of the snow opening 30.

In the walking type snow remover 1 having the above-described structure, the power from the engine 4 is transmitted to the transmission 6 and the snow remover 9 by operating various operating devices in the control unit 8, and the two hydraulics are used. The cylinder, the chute rotating unit 10a, the snow throwing distance adjusting mechanism 10b, and the like are controlled. Then, the crawler 3 is driven and the machine body travels, and the snow removing section 9 and the snow throwing chute 10 perform snow removing and snow throwing work. During such snow removal work, the aircraft is traveling at a low speed, and a pivot turn or super pivot turn is performed at a low speed, so that the pilot is not swung.

When the snowplow 1 is running at a high speed without performing the snowplowing operation, when the body is pivoted or pivoted, a pressure greater than a predetermined pressure acts on the link rod 27 and the spring cylinder 28 is actuated. Extend and link rod 2
When the length of the vehicle 7 is long and the aircraft is turning or pivoting at low speed, the vehicle runs at a low speed, and the danger of the operator being swung by the aircraft is avoided.

The snow raked by the snow removing unit 9 causes the combined force F of the centrifugal force F ₁ and the rotational force F ₂ to act on the snow at the moment when the rotating blades 31 of the blower 16 are located at the entrance of the snow opening 30. Snow is thrown and the snow is thrown from the snow opening 30 vigorously. Further, since the area of the entrance 30 a of the snow opening 30 is larger than the area of the exit 30 b of the snow opening 30, the snow blown from the entrance of the snow opening 30 by the rotating blades 31 of the blower 16. Is further accelerated from the exit of the snow opening 30 and is thrown through the snow shooting chute 10, so that the snow throw distance can be lengthened. The present invention is applicable not only to a walking snow plow but also to a riding snow plow.

[0024]

As described above, according to the blower housing of the snow blower of the present invention, the following effects can be obtained.

[0025] Since the position of the snow opening formed in the housing of the blower is shifted by a predetermined angle above the center of the housing, the centrifugal force and the rotational force of the blower at the moment when the rotating blades of the blower are located at the entrance of the snow opening. The resultant force works on the snow and the snow is thrown, and the snow can be thrown at the strongest moment from the snow opening.

[0026] Since the entrance area of the snow opening is larger than the exit area of the snow opening, the snow thrown from the entrance of the snow opening by the rotating blades of the blower increases the initial speed and increases from the exit of the snow opening. Further, the snow is thrown through the snow throwing chute in an accelerated state, and the snow throwing distance can be lengthened.

[Brief description of the drawings]

FIG. 1 is a left side view of the entire walking snowplow.

FIG. 2 is a plan view of the same.

FIG. 3 is a right side view of the same.

FIG. 4 is a front view of a control unit.

FIG. 5 is a partial side view of the control unit.

FIG. 6 is a sectional view of a blower housing according to the present invention.

FIG. 7 is a sectional view of a conventional blower housing.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Walking snow remover 2 Base 3 Crawler traveling device 4 Engine 5 Hydraulic continuously variable transmission (HST) 5a Link lever 6 Transmission (transmission mechanism) 7 Steering handle 8 Steering part 8a Operation panel 9 Snow removing part (auger part) 10 Snow throw chute 10a Chute turning part 10b
Snow throwing distance adjusting mechanism 11 Snow removing part elevating / lowering right and left turning lever 12 Support stay 13 Rotating support part 14 Snow removing part rolling operation lever 15 Snow removing part rolling control dial 16 Blower 17 Grounding sled 18 Snow throwing distance / direction adjusting switch 19 Snow removing clutch Reference Signs List 20 throttle lever 21 traveling clutch 22 speed adjustment lever 23 emergency stop switch 24 emergency stop lever 25 light 26 transmission speed change rod 27 link rod 28 spring cylinder 29 blower housing 30 snow hole 30a snow hole entrance 30b snow hole Outlet 31 Rotating blade O Center of housing

Claims (2)

[Claims] 1. A snow blower in which snow blown by a snow removing section is blown up by a blower and throws snow through a snow throwing chute, wherein a position of a snow opening formed in a housing of the blower is determined by:
A blower housing for a snow blower, wherein the blower housing is provided at a predetermined angle above the center of the housing. 2. A blower housing for a snow blower according to claim 1, wherein an entrance area of said snow opening is larger than an exit area of said snow opening.