JPH10152814A - Snow-removing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a snow-removing machine in which the same parts are variously used so that the design change can be minimized and further the cost can be reduced by making the height adjustment mechanism simple and inexpensive and also by enabling the selection of height adjustment mechanism either by manual or by the cylinder drive with regard to the snow-removing machine of the same specifications. SOLUTION: In a snow-removing machine, a snow-removing part D having an auger and a blower in front of the machine body in which an engine and traveling device and the like are arranged is connectedly provided, and an operation part C is arranged to the rear part of this machine. In that case, the driving sprocket shaft arranged in the front part of the crawler-type traveling device situated below this machine is made to be the fulcrum of vertical turning of the snow-removing part, and both the supporting pipe to which a locking part for adjusting the vertical turning position of the snow-removing part is provided, and the supporting pipe to which the fitting bracket 73 of a vertical turning driving cylinder 72 is fixed are replaceably constituted to the idler shaft for supporting the idler arranged at the rear part of a crawler- type traveling device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for adjusting a snow removal height of a small snow removal machine having a snow removal section having an auger and a blower in front of the machine provided with an engine and a traveling device.

[0002]

2. Description of the Related Art Conventionally, a snow removing section having an auger and a blower is continuously provided in front of a machine provided with an engine, a traveling device, and the like, and an operation section for performing a driving operation and a snow removing operation is provided at a rear portion of the machine. Such snow blowers are known. In such a snow remover, the height of the snow auger is adjusted up and down to adjust the snow removal height. The height adjustment of the auger supports an idler provided at the rear of the machine. A foot pedal is provided on the idler shaft, and the operator operates the operation lever provided on the operation unit by hand while operating the foot pedal with his / her feet.

[0003]

However, in such a configuration in which the height of the snow removal is adjusted by the hands and feet of the operator, it takes a lot of time and effort to adjust the height, and it is delicate. The height could not be adjusted. For this reason, a height adjustment mechanism that can automatically adjust the height by expanding and contracting the cylinder by simply operating the operation switches and operation buttons, and further finely adjusting the height has been desired. In addition, the structure of the height adjustment mechanism becomes complicated, and the number of parts increases, which tends to be expensive.

[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 a snow removal machine in which a snow removal unit having an auger and a blower is continuously provided in front of the machine provided with an engine, a traveling device, and the like, and an operation unit is disposed at the rear of the machine,
A drive sprocket shaft disposed at the front of the crawler type traveling device at the lower part of the machine is used as a vertical fulcrum of the snow removal unit, and an idler shaft supporting an idler disposed at the rear of the crawler type traveling device is provided with a snow removal portion. A support tube provided with a locking portion for adjusting a vertical rotation position and a support tube to which a mounting bracket of a vertical rotation drive cylinder is fixed can be replaced.

[0005]

Next, an embodiment of the present invention will be described. 1 is an overall side view of the snow blower, FIG. 2 is a plan view thereof, FIG. 3 is an overall side view showing a height adjusting mechanism, FIG. 4 is a partial plan view thereof, FIG. 5 is a partial side view thereof, and FIG. FIG. 7 is a partial plan view and FIG. 8 is a partial side view showing another embodiment of the adjusting mechanism.

First, a snowplow is shown in FIGS.
The whole configuration will be described. A snow removing section D is continuously provided at a front portion of the machine A. The snow removing section D has an auger housing 8 which covers an auger 26 for scraping snow at the foremost portion.
A blower cover 6 in which a blower is provided is continuously provided at a rear portion, and a snow removal chute 7 which can be turned by 180 degrees by a motor M is protruded above an upper portion of the blower cover 6. The machine A is covered by a machine cover 1, and an engine E is built in the machine cover 1.
And the exhaust muffler 3 protrudes from the front of the bonnet 2. A battery B is provided behind the engine E.

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, a traveling speed change lever, a snow removal height adjustment switch, a snow removal chute turning lever, and the like. A dead man switch 36 is provided on the left rear portion of the handle 4 to operate a dead man switch 36 interlocking with an engine stop motor. A lever 20 is provided. The operation of the snow blower is performed while the deadman lever 20 is gripped together with the handle 4 and the operation of the engine E is stopped when the operator falls and releases the handle during the operation. The danger of the elderly. The deadman switch 36 is provided below the operation panel 5 so as to prevent the snowfall from adhering to prevent malfunction.

An HST transmission H and a transmission case T are disposed below the engine E. Drive shafts 42 projecting right and left from the transmission case T are interposed via left and right final cases 19. And the drive sprocket shafts 11, 11 pivotally supported by the crawler frame 12.
The drive sprockets 13, 13 fixed to the drive sprocket shafts 11, 11 are driven in conjunction with. Also,
An idler shaft 77 described later is provided behind the crawler frame 12.
Idlers 15.1 fixed to the left and right ends of the support shaft 14 of FIG.
5, a driving sprocket 13 and a driven idler 15 on the same side are wound around a crawler 16 to form a crawler type traveling device.

As shown in FIG. 3, the traveling device has a hydraulic cylinder 72 interposed between the idler shaft 77 and the operating part C, and operates the operating switch 75 to extend and retract the hydraulic cylinder 72. The snow removal unit D is configured to be able to swing up and down with respect to the machine A around the drive sprocket shaft 11 so that the height of the auger 26 above the ground can be adjusted. As shown in FIG. 6, the height adjusting mechanism is provided with a foot pedal 18 on the idler shaft 77, and the height can be adjusted by operating the foot pedal 18 and the snow removing height adjusting lever 67 of the operation panel 5. I have. 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 mounted on a cam shaft projecting forward from an engine E provided in the cover 1 of the machine, and a drive pulley 23a is provided at the rear of the drive pulley 23.
In addition, a front portion is formed on a snow removing drive pulley 23b. A pump shaft 40, which is a driving force input shaft, protrudes forward from an HST transmission H disposed below the engine E, and a HST input pulley 24 provided around the pump shaft 40 and the traveling drive pulley 23a are belt-connected. The driving force is linked to 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 41, which is an output shaft projecting rearward of the HST transmission H, to a transmission case T disposed behind the HST transmission H. The drive sprocket 13 is driven via the final case 19. The snow removing drive pulley 23
b is connected to an auger pulley 25 provided around an auger input shaft 25a projecting rearward from the blower cover 6 by a belt, and drives an auger 26.

The HST input pulley 24 and the auger pulley 25 are formed with fins, and these pulleys rotate so that air can be blown rearward, and the wind generated by this rotation is transmitted to the HST type transmission 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, the deadman switch 36, and the like, and prevents malfunctions due to freezing of the various operation levers, the deadman switch 36, and the like.

A pump shaft, which is an input shaft of the HST type transmission H, is disposed below a motor shaft, which is an output shaft, and an HST fitted externally to the auger pulley 25 and the pump shaft.
The HST input pulley 25 and the auger pulley 25 are configured so as not to interfere with each other in the boss portion 24b of the input pulley 24, so that 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. Good weight balance.

The height adjusting mechanism X for adjusting the snow removal height will be described with reference to FIGS. 3, 4, and 5. FIG. Support frames 66, 66 protrude from the rear ends of the crawler frames 12, 12 disposed on the left and right of the lower part of the machine A, respectively.
The support frames 66 support an idler shaft 77, and the idler shaft 77 is connected to the support frames 66.
Flanges 70 and 70 fixed to the
The support shaft 14 is rotatably fitted with the support shaft 14, and the support tube 71 connects the left and right flanges 70. An idler 15 is fitted to a protruding portion of the support shaft 14 from the flange 70. Further, the support shafts 14 are connected to a support shaft 1 described later.
4 ′, the support shaft 14 ′ is connected to the left and right flanges 70.
It is also possible to adopt a configuration in which the idlers 15 and 15 are rotatably fitted to the support shaft 71, penetrate through the support tube 71, and are fitted to the left and right ends of the support shaft 14 ′.

The support tube 71 is fastened at both ends to fastening portions 70a of the left and right flanges 70, 70 by bolts or the like.
A base 73 of the cylinder 72 is pivotally supported on the cylinder brackets 73 by a pivot shaft 73a. A support shaft 74b is provided horizontally between the left and right side plates 17 and 17 disposed below the operation panel 5, and a bracket 74 protrudes rearward from the support shaft 74b. The tip of the rod 72a is rotatably supported by a pivot 74a.

When the operation switch 75 provided on the operation panel 5 is operated, the height adjustment mechanism thus constructed causes the piston rod 72a of the cylinder 72 to expand and contract, and the body A, the operation section C and the If the snow removal machine consisting of the snow removal part D rotates up and down around the driving sprocket shaft 11 and stops the operation of the operation switch 75 at an arbitrary height, the expansion and contraction of the piston rod 72a is stopped, and the auger is stopped. 26 can be set to a desired height. Since the height adjusting mechanism is constructed by directly interposing the cylinder 72 with the support tube 71 as a fulcrum between the support tube 71 and the support shaft 74b provided laterally on the operation portion C, the height adjustment mechanism is simple and inexpensive. Configuration.

Next, a height adjusting mechanism Y which is another embodiment of the height adjusting mechanism will be described with reference to FIGS. 6, 7 and 8. FIG. The crawler frames 12, 12 arranged on the left and right of the lower part of the machine A
The support frames 66, 66 respectively protrude from the rear end. The support frames 66 support an idler shaft 77, and the idler shaft 77
The support shaft 1 rotatably fitted to the flanges 70 ′ and 70 ′ fixed to 66 and the left and right flanges 70 ′ and 70 ′
4 'and a support tube 71' rotatably fitted to the support shaft 14 'between the left and right flanges 70'. Further, idlers 15 and 15 are fitted to left and right ends of the support shaft 14 '.

At both ends of the support tube 71 ', both ends of a foot pedal 18 formed substantially in a U-shape in plan view are fixed and protrude rearward. Height adjustment plates 61 are fixed inside and protrude forward and upward, and the height adjustment plates 61 and the foot pedal 18 are integrally rotatable. In a steady state, the foot pedal 18 is urged upward, and the height adjusting plates 61 are urged forward by a spring or the like. A rotating shaft 64 is horizontally provided between the left and right vertical frames 9, 9 projecting downward from the side plates 17, 17, and projects in the left-right direction from the tip of an arm 62 fixed to the rotating shaft 64. The locking pin 63 is locked to any one of the plurality of locking grooves 61a provided in the height adjusting plates 61 to determine the snow removal height. The rotating shaft 64;
The snow removal height adjustment lever 67 provided on the operation panel 5 is connected to the snow removal height adjustment lever 67 by a link rod 65 or the like. The snow removal height adjustment lever 67
2. The snow removing height adjusting lever 67 is
a, 67a... can be fixed at an arbitrary position by being locked at any one position.

When the snow removal height is adjusted by the above-described configuration, first, the pedal 18a of the foot pedal 18 is depressed with a foot or the like and turned downward to thereby rotate the height adjustment plate 6.
1 and 61 are rotated rearward to release the locking between the locking pin 63 and the locking groove 61a, and the snow removing machine including the machine A, the operating portion C and the snow removing portion D is centered on the drive sprocket shaft 11. To a rotatable state. In this state, the snow remover is turned up and down while holding the handle 4 to adjust the auger to an arbitrary height, and then the foot is released from the pedal 18a.
8a is turned upward, and the height adjusting plates 61 are turned forward, so that the locking holes 61a and the locking pins 63 closest to each other at the adjusted height are locked. Thereafter, the snow removal height adjustment lever 67 is rotated back and forth to rotate the arm 62 up and down, and the snow removal height adjustment lever 67 is locked to the locking portion 67a at an arbitrary position to perform fine adjustment of the height. It is.

The height adjusting mechanism X has a simple and inexpensive structure as described above. The height adjusting mechanism X is constructed by replacing the idler shaft 77 with an idler shaft 77 '.
It is possible to change the height adjustment mechanism Y without changing other parts and configurations simply by adding a bracket 74 and the like. It is possible to mount the adjustment mechanisms X and Y, and to provide a more inexpensive snow blower.

[0020]

As described above, the present invention has the following advantages. That is, the idler shaft supporting the idler disposed at the rear of the crawler type traveling device is provided with a support pipe provided with a locking portion for adjusting the vertical rotation position of the snow removing section, and a mounting bracket for the vertical rotation drive cylinder. Since the fixed support tube is configured to be replaceable,
The height adjustment mechanism has a simple and inexpensive configuration, and it is possible to select a manual or cylinder-driven height adjustment mechanism from snow removers of the same specifications, so the same parts can be used frequently. The design change was minimal and a more inexpensive snow blower could be provided.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the same.

FIG. 3 is an overall side view showing a height adjusting mechanism.

FIG. 4 is a partial plan view of the same.

FIG. 5 is a partial side view of the same.

FIG. 6 is an overall side view showing another embodiment of the height adjusting mechanism.

FIG. 7 is a partial plan view of the same.

FIG. 8 is a partial side view of the same.

[Explanation of symbols]

 A Machine C Operation section D Snow removal section E Engine 14 Support pipe 15 Idler 18 Foot pedal 26 Auger 70 Flange 71 Support pipe 72 Cylinder 73 Cylinder bracket

Claims (1)

[Claims] 1. A snowplow having an auger and a blower in front of the machine provided with an engine, a traveling device, and the like, and an operation unit disposed at a rear portion of the machine, wherein The drive sprocket shaft provided at the front of the crawler-type traveling device is used as the vertical rotation fulcrum of the snow removal unit, and the idler shaft supporting the idler provided at the rear of the crawler-type traveling device is used to adjust the vertical rotation position of the snow removal unit. A snowplow characterized in that a support pipe provided with a locking portion for performing the operation and a support pipe to which a mounting bracket of a vertically rotating drive cylinder is fixed can be replaced.