JPH10147154A - Mission attaching structure for snow-pie - Google Patents

Abstract

PROBLEM TO BE SOLVED: To determine an attaching position of an HTS-type transmission and a mission casing by fitting a positioning pin projected from a mission attaching plate into an positioning hole in an attaching frame secured to a chassis frame, and to facilitate the attachment of the HST-type transmission and the mission casing by only one worker, by coupling and fixing the mission attaching plate and the attaching frame to each other. SOLUTION: The attaching position of a mission device in which a mission attaching plate 43 is attached to an HST type transmission H and a mission casing T which are integrally coupled together, is determined by fitting a positioning pin 5c projected from the mission attaching plate 43 into a positioning hole 45a in an attaching frame 45 secured to the chassis frame 37, Further, the mission attaching plate 43 and the attaching frame 45 are connected and secured together while the weights of the HST type transmission H and the mission casing T are held.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission mounting structure for a small snowplow equipped with a snow removal section having an auger and a blower in front of the apparatus having 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. An example of a structure for mounting a transmission device such as an HST transmission device or a transmission case in a snowplow is an HST transmission device in which a mounting hole is provided in the transmission device and the vehicle body so that one worker can mount the transmission device. While supporting the device and the transmission case by hand near the mounting position, the mounting position is determined by, for example, aligning the mounting holes provided in the fuselage and the transmission device with each other, and these mission devices are mounted at the determined mounting position. While being held, another worker connected and fixed the mounting holes and the like with bolts or the like.

[0003]

However, at the time of mounting the mission device with the above-described mounting structure, the worker positions the mounting while supporting the mission device with his / her own hand. However, it takes a lot of time to determine the mounting position, it is difficult to keep the heavy transmission device stationary at the determined mounting position, and the mounting and fixing work is performed by the positioning and holding operator. Had to be done by another worker. as a result,
The installation of the mission device during the snowplow manufacturing process and during maintenance in the market has been complicated and inefficient.

[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 section having an auger and a blower is provided in front of the machine provided with an engine, a traveling device, and the like, a continuously variable transmission and a transmission case are integrally connected. Or fix the mission mounting plate to one of the mission cases,
A positioning pin protrudes from the transmission mounting plate, and the positioning pin is fitted into a positioning hole of a mounting frame fixed to a chassis frame of the machine to be positioned and fixed.

[0005]

Next, an embodiment of the present invention will be described. 1 is an overall side view of the snowplow, FIG. 2 is a plan view of the same, FIG. 3 is a side view showing a positional relationship between a pump shaft and an auger pulley, FIG. 4 is a front view thereof, and FIG. 6 is a side view showing the mounting mechanism, FIG. 7 is a front view of the mounting frame, and FIG. 8 is a front view of the transmission mounting plate.

First, an overall configuration of a snow blower having a transmission mounting structure according to the present invention will be described with reference to FIGS. A snow removing section D is continuously provided at the front of the machine A. The snow removing section D has an auger housing 8 that covers an auger 26 for scraping snow at the forefront, and a blower is provided at the rear of the auger housing 8. A blower cover 6 is connected to the blower cover 6 and a snow removal chute 7 that can be turned by 180 degrees by a motor M protrudes above an upper portion of the blower cover 6. The machine A is covered with the machine cover 1, the engine E is built in the machine cover 1, the bonnet 2 is arranged at the upper part, and the exhaust muffler 3 projects from the front of the hood 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 running speed change lever, a snow removal height adjustment lever, a snow removal chute turning lever, and the like. A deadman switch on / off operation of a deadman switch 36 interlocked with an engine stop motor is provided on the left rear of the handlebar 4. 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.

Below the engine E, an HST-type transmission H as a continuously variable transmission and a transmission case T are disposed, and drive shafts 42 projecting from the transmission case T to the left and right are disposed in right and left finals. Case 19 ・ 19
The drive sprockets 13, 13 fixedly mounted on the drive sprocket shafts 11, 11 are driven in conjunction with the drive sprocket shafts 11, 11 pivotally supported by the crawler frame 12 via. A driven idler 15.1 fixed to the left and right ends of the idler shaft 14 is provided behind the crawler frame 12.
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.

The traveling device can swing up and down with respect to the machine A around the driving sprocket shaft 11 by operating a foot pedal 18 fixed to the idler shaft 14 and a snow removal height adjusting lever on an operation panel. It has become. This swinging mechanism can also be carried out by interposing a hydraulic cylinder between the idler shaft 14 and the machine A or the operating section C and by expanding and contracting the hydraulic cylinder. 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.

In the HST type transmission H, as shown in FIGS. 3 and 4, the pump shaft 40 is disposed below the motor shaft 41. The boss portion 24b of the HST input pulley 24 provided around the pump shaft 40 is configured to be located below the auger pulley 25 disposed in front of the HST transmission H. By arranging the pump shaft 40 in this manner, the boss portion 24b of the HST input pulley 24 and the auger pulley 25 do not interfere with each other in the vertical direction.
It can be arranged close to the T-type transmission H. That is, the auger pulley 25 and the pump shaft 40
The auger pulley 25 can be disposed without contacting each other even when the HST-type transmission H is brought close to the position where the HST-type transmission H overlaps.

Thus, the pump shaft 40 is connected to the motor shaft 41.
And the auger pulley 25 is disposed close to the HST transmission H, so that the space for storing the HST input pulley 24 and the auger pulley 25 in the machine A can be reduced, and the weight of the snow removing machine can be reduced. Can be reduced. Further, since the auger pulley 25 can be disposed rearward as compared with the conventional case, the center of gravity of the snow remover approaches the center side of the body, and the weight balance of the entire snow remover is improved.

Since there is no interference between the auger pulley 25 and the boss 24b of the HST input pulley 24, the HS
Even in a posture in which the T-type transmission H is rotated left and right around the motor shaft 41, it is possible to dispose the engine E and the transmission case T without changing the installation position, and there are restrictions in designing. It is possible to reduce the number and to make easy and various designs possible.

Next, a structure for mounting the transmission including the HST-type transmission H and the transmission case T to the machine A will be described with reference to FIGS. 5, 6, 7, and 8. FIG. Machine A
The engine E is installed on the upper part of the chassis frame 37 disposed below the engine frame via an engine installation base 44.
The chassis frame 37 is formed in a substantially U-shape when viewed from the front and has an opening at the bottom, and houses the HST type transmission H and the transmission case T therein. At the front of the chassis frame 37, a mounting frame 4 for a plate-like member is provided.
3 is fixed vertically in the left-right direction by welding or the like, and a lower portion is cut out at the center so that the HST transmission H and the transmission case T can be mounted horizontally in the front-rear direction.

On the other hand, the HST type transmission H and the transmission case T are connected in series back and forth by bolts 46, and a transmission mounting plate 45 is attached to either the HST type transmission H or the transmission case T. In this embodiment, the transmission mounting plate 45, the HST transmission H and the transmission case T are fixed to the front of the HST transmission H in this embodiment.
5 are integrally connected and fixed by bolts 47 from the connection holes 45a.

The mounting frame 43 has positioning holes 43a and 43a and mounting holes 43b and 4 on both left and right sides.
3b, the transmission mounting plate 45 is provided with positioning pins 45c, 45c protruding forward on the left and right sides in accordance with the positions of the positioning holes 43a, 43a, respectively, in accordance with the positions of the mounting holes 43b, 43b. Mounting hole 45b
・ Opens 45b. The positioning pin 45c is formed to have a smaller diameter than the positioning hole 43a, and the positioning pins 45c and 45c and the positioning holes 43a and 43a are configured to be freely fitted respectively.

When the HST type transmission H and the transmission case T are mounted on the mounting frame 43,
Positioning pins 45c and 45 of the transmission mounting plate 45
c, the positioning holes 43a
Into the mounting position.
48, mounting holes 43b and 4 of the mounting frame 43.
3b and mounting holes 45b and 4 of the transmission mounting plate 45
5b may be used for connection and fixation.

Since the transmission mounting plate 45, the HST type transmission H and the transmission case T are integrally connected, the positioning pins 45c are inserted into the positioning holes 43a.
43a, the positioning pins 45c and 45
Since these mission devices, which are heavy objects, can be held by c, and the operator only needs to lightly attach one hand to these mission devices, the transmission mounting plate 45 to the mounting frame 43 such as tightening of the bolts 48 is used.
Can be installed and fixed at the same time as holding the mission device.
The HST type transmission H and the transmission case T can be easily mounted by one operator. As a result, the mounting work of the HST type transmission H and the transmission case T during the manufacturing process of the snow blower and at the time of maintenance at the site is simplified, and the work efficiency can be improved and the cost can be reduced.

[0020]

As described above, the present invention has the following advantages. That is, the HST-type transmission and the transmission case, which are arranged at the lower part of the machine, are connected and integrally formed, and a transmission mounting plate is fixed to the HST-type transmission or the transmission case. The mounting position is determined by fitting a positioning pin protruding from the transmission mounting plate into a positioning hole of a mounting frame fixed to a chassis frame, and the HST-type transmission and the transmission case. Because the transmission mounting plate and the mounting frame were connected and fixed while maintaining the weight of
The HST-type transmission H and the transmission case T can be easily mounted by a single worker, and the HST-type transmission H and the transmission case T can be mounted during the snow removing machine manufacturing process and during maintenance in the market. This has made it easier to improve work efficiency and reduce costs.

[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 a side view showing a positional relationship between a pump shaft and an auger pulley.

FIG. 4 is a front view of the same.

FIG. 5 is a front view showing an HST-type transmission mechanism and a transmission case mounting mechanism.

FIG. 6 is a side view of the same.

FIG. 7 is a front view of the mounting frame.

FIG. 8 is a front view of a transmission mounting plate.

[Explanation of symbols]

 A Machine C Operation section D Snow removal section E Engine H HST transmission T Transmission case 37 Chassis frame 43 Mounting frame 43a Positioning hole 43b Mounting hole 45 Transmission mounting plate 45a Connecting hole 45b Mounting hole 45c Positioning pin 46/47/48 bolt

Claims (1)

[Claims] 1. A continuously variable transmission and a transmission case are integrally connected to a 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. A transmission mounting plate is fixed to either the step transmission or the transmission case, a positioning pin is projected from the transmission mounting plate, and the positioning pin is fitted into a positioning hole of the mounting frame fixed to the chassis frame of the machine. A snow removing machine transmission mounting structure characterized in that the snow removing machine is positioned and fixed.