JPS63194011A - Snow removing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a simple and compact snow blower that uses an auger to shovel and discharge snow.

(Prior technology) Snow removers that use a rotating auger to scrape up snow and simultaneously discharge it upwards are simpler, smaller, and lighter than those that have a blower for discharging separately from the auger. It is preferable because it has the following characteristics and its cost is low.

Conventionally, this type of snow blower has an auger (201) installed horizontally in front of the machine body (20G), as shown in FIG.
The engine (205) placed behind it and one aircraft (
Belt pulley mechanism (20?) arranged on the - side of 200).
), and is connected via this belt pulley mechanism (207), and is configured to transmit the engine output to the auger (201) by this belt pulley mechanism (20?) (for example, Japanese Patent Laid-Open No. 57 -74414).

However, in such a conventional snow blower, the engine (
The center line (210) in the width direction of the fuselage (200) is arranged so that the direction of its output shaft coincides with the width direction of the fuselage (200), and the tip of the output shaft extends to the sides of the fuselage (200).
), it is provided at a position slightly deviated to the − side. The belt pulley mechanism includes a drive pulley (205a) provided on the engine output shaft (205a) on the side of the aircraft body.
07a) and the driven pulley (207b) provided at the end of the auger shaft (2ota) (2G7c)
are suspended, and a cover (208) is provided to cover them.

(Problems to be Solved by the Invention) However, in such a conventional snow blower, the belt pulley mechanism, which is a power transmission mechanism, is provided on the side of the machine body, and the engine is oriented sideways and biased toward the side. Because of this, the width of the entire fuselage tends to increase, and the center of gravity of the entire fuselage also shifts to one side, resulting in poor weight balance between the left and right sides of the fuselage.

In addition, the overall shape of the snow blower is not symmetrical, resulting in poor appearance. Therefore, if a box-shaped frame is used, for example, in order to make the appearance symmetrical due to design requirements, The overall shape of the snow blower becomes larger.

Furthermore, the engine power is transmitted to the auger shaft at the front of the aircraft while changing its direction through the sides of the aircraft, so the transmission path tends to be long and complicated, making it difficult to transmit power. There are concerns that losses will be more likely to occur.

Therefore, the present invention was made to solve these conventional problems, and its purpose is to easily make the overall shape of the snow blower symmetrical, so that it is small and has good weight balance, and also has an appearance. To provide a snow blower which has excellent performance, has a short power transmission path, and can reliably transmit power.

(Means and operations for solving the problems) In order to solve the above problems, the present invention uses engine power to rotate an auger (10B) installed horizontally at the front of the aircraft body, thereby moving the accumulated snow to the center of the auger. In a snow blower that collects snow to a side and discharges it upward, a power transmission shaft (71) that transmits engine power to the auger (10B) is provided to extend rearward from the center of the drive shaft of the auger (IOB), The power transmission shaft is coaxially connected to the output shaft (51) of the engine (5).

According to such a configuration, the power transmission path can be arranged at the center in the width direction of the aircraft body, so the engine can also be arranged at the center in the width direction and with its output shaft aligned with the front direction of the aircraft body. It is symmetrical both in size and weight, has excellent appearance and weight balance, and can be easily miniaturized.Moreover, the length of the power transmission path is the shortest, and power transmission can be achieved reliably.

(Example) An example of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 to 3 are general views showing the snow blower, and FIGS. 4 to 1θ are partially detailed views showing each part of the snow blower.

In Figures 1 to 3, (1) is an auger section installed horizontally at the front of the machine for shoveling and discharging snow, and (3) is an auger section installed above the auger for discharging snow scraped by the auger to the top of the machine. (5) is an engine installed at the rear of the aircraft that drives the auger part (1), (7)
is a clutch provided between the engine (5) and the auger section (1), which connects and disconnects the transmission of engine power, and (9)
) is the handle, and (11) is the rolling shaft.

The handle (9) has an extending portion (
9a), an upright portion (8b) extending from the upper part of the clutch case (7a) to the lower part thereof, and a lower part of the engine (5) from the lower end part of the clutch case (7a) to the lower part thereof. It is integrally provided with a horizontal portion (9c) extending substantially horizontally, and is formed by, for example, bending a metal pipe.

The extension part (9a) is provided with a handle operation part (80) having a clutch operation lever (81) in its upper part, the height of which can be adjusted by an adjustment knob (82).
), (9a) between the engine (5) and clutch (7)
Support the top cover (!3). This cover (!3) is integrally provided with a fuel tank (15) on its back, and its fuel filler port (15a) is provided on the upper end of the cover.

The upright portion (9b) of the handle (8) is provided approximately parallel to both sides of the clutch case (7a), and its two upper and lower portions are attached to the clutch case (7a) with bolts (H) + (83).
etc. concluded. The clutch case (7a) has its front end fastened to the auger housing (100) at a predetermined location, and its rear end fixed to the crankcase (5a) of the engine (5).

The horizontal part (9C) of the handle (3) is provided with a bracket (llb) that pivotally supports a rolling shaft (11a) approximately at the center in its extending direction, and has a bracket (llb) that pivotally supports a rolling shaft (11a), and a bracket (llb) that pivotally supports a rolling shaft (11a). The handle is continuous in a loop.

As shown in FIG. 3, this continuous part (8d) has a central part (8e) formed into a flat cross-section, and the engine (5) is connected to this formed part through bolts (94), (94). Support the rear.

The engine (5) is provided so that its center of gravity is located at the center in the width direction of the fuselage, and a crankshaft (51) serving as an output shaft (described later) is provided so that the center in the width direction of the fuselage is oriented toward the front of the fuselage. A muffler (18) and an air cleaner (18) are provided below the cover (13) on both sides, and a coil starter (52) is provided at the rear end. As shown in FIG. 4, the crankshaft (51) outputs engine power to the drive shaft (tol) of the auger section (1) via the dry clutch (7) and the power transmission shaft (71).

These power transmission mechanisms will be explained below with reference to FIGS. 4 and 5.

The crankshaft (51) passes through a crankcase (5a) formed at the front of the engine, and a clutch case (7a) formed at the front of this crankcase (5a).
The clutch (7) is connected within the case. This clutch (7) includes a drive plate (72) provided on the crankshaft (51) side and a driven plate (73) provided on the power transmission shaft (71) side. The drive plate (72) is fitted into a groove (52a) of a step (52) formed at the tip of the crankshaft, and is connected to a first plate (70) that rotates integrally with the crankshaft (51). The first plate (70) is fitted so as to be slidable in the axial direction on the outer circumferential surface (74a) of the base of the first plate (70), and is engaged with the first plate by the first plate (7B), (7B). and a second plate (75) provided so as to be able to rotate together with the second plate (75).
The first plate (the second plate is on the outer periphery of 70) (7
A release lever (78) is provided at the base (75b) of the second plate (75).
) is formed with a thick portion (79) that is pressed against the end portion (78d) of the plate (75) to move the plate (75). As shown in FIG. 6, the release lever (7th) has one end (
A return spring (80) is suspended between the auger housing (100) and the auger housing (78a), and is constantly biased clockwise in FIG. 6 about the fulcrum (78b). Further, the wire (83) from the clutch lever (81) is connected to the other end (78c) of this release lever (78), and the release lever (78) is returned only when the clutch lever (31) is operated. It rotates counterclockwise against the elastic force of the spring to move the shifter (79) toward the rear of the aircraft. That is, the elastic force of the return spring (80) is greater than the elastic force of the leaf spring (77) provided in the first play (74), and therefore the second play (75) is larger than the elastic force of the leaf spring (77) provided in the first play (74). slides backward and comes into contact with a friction plate (81), which will be described later.

The driven play) (73) is a disc-shaped plate (82b) that is erected on a cylindrical base (82a) that becomes an output shaft.
) (82), the outer peripheral end (83d) of which is attached to the rear end (82d) of the cylindrical part Back play) (83) and drive play)
(72) is formed into a drum shape that wraps around the fuselage from the front. And on the side surface (83a) on the drive play (72) side of the back plate (83), there is a leaf spring (77).
The pressing surface (75c) of the second plate (75) is urged to
A friction plate (81) that comes into contact with is fixed in the form of a link, and the rearward facing side surface (83b) of this back plate (83)
On the top, a brake shoe (80) is formed in a ring shape and is pressed against one end of the release lever (78) to stop rotation and rotation of the driven play (73) when the clutch is connected or disconnected by the release lever (78). Ru.

The rear inner circumference of the cylindrical base (82a) is supported by the tip of the crankshaft via bearings (85) and (8B), and the front inner circumference of the cylindrical base (82a) is supported by the power transmission shaft (
A connecting shaft (87) screwed onto the rear end of the drive shaft (71) is fitted into a groove (87a) on the outer periphery of the drive shaft (71), allowing the power transmission shaft (71) to rotate integrally with the driven play (73).

The connection shaft (87) is connected to the auger housing (1) fixed to the front end opening (7b) of the clutch case (7a).
00) via a bearing (102).

The power transmission shaft (71) is an auger housing (10G)
(The auger bracket)
103) via bearings (104), (104), and a worm (71a) formed at the tip of the shaft (71) is fixed to the auger drive shaft (101). It meshes with the wheel (101a).

As shown in FIGS. 7 to 9, the auger drive shaft (101) is rotatably installed horizontally within an auger housing (100) having an opening (105) at the front lower part. As mentioned above, the power transmission shaft (71) is located at the center of this shaft (101).
) which rotatably supports the tip of the auger bracket (1).
03), and a worm wheel (101a) with which the worm (Via) of the power transmission shaft (71) meshes at the center of the auger drive shaft (101) in the bracket (103).
Equipped with. Also, on both sides of the auger drive shaft (101) are divided augers (101), respectively.
3), (108) are fixed.

These augers (108), (108) are connected to the housing (10
A snow scraping part (108a) is formed in a spiral shape to scrape snow near both measuring parts in the housing (108a) toward the center of the shaft, and the snow collected near the center by this snow scraping part (108a) is removed from the housing (loo). It consists of a flip-up part (108b) formed to flip the snow upward along the back surface of the auger (108B), and its material is partly made of hard rubber, etc. so that the snow blower can also be moved by the rotational movement of this auger (10B). used for.

Each of these augers (foe) and (fo
In the region S below the power transmission shaft (71) between e), left and right augers (10B), (10B
) to prevent snow raked by the guide body (1G ?) will be provided.

As shown in FIG. 1O, this guide body (107) is shaped like a case and has an opening (108) at a rear end (107a) that is circumferential to follow the inner circumferential surface (100a) of the housing. Ribs (101) extending in the longitudinal direction of the fuselage are formed within this internal space. Further, a hole (110) through which the power transmission shaft (71) is inserted is provided at the rear upper end of the guide body (10?), and a hole (110) is provided at a predetermined location in the upper part and the rear end of the circumferential shape. , a pair of left and right locking pieces (111), (111) are formed, and this locking piece (1
11) and (111) are inserted into the engagement hole (112) formed on the housing side and engaged, the guide body (1
07) is supported by the inner peripheral surface of the housing (100a). Furthermore, the front end (iom) of this guide body (1ob)
b) is the rear end (toa) of the auger bracket (103).
a) and a part of its lower end (toab), the upper front end surface (to7b) is formed in a step shape along a part of the guide body (1
07) Insert the hole (113) from the inside) (11
4) is fastened to the rear end surface (103a) of the auger bracket.

The discharge duct (3) formed in the upper part of the auger housing (100) is equipped with a discharge direction adjustment device (31) for adjusting the discharge direction as shown in FIG.
The snow thrown up by step 8) flies along the back surface of the discharge duct (30a) and the back surface of the adjustment device and is discharged in a predetermined direction. Therefore, this snow blower is installed on the back of the discharge duct (
30a) in the center of the width direction of Figure 8Cb).
A ridge-like projection (30b) as shown in the BB line cross-sectional view of
along the duct direction as a guide, and each auger (
10B) and (108) are prevented from interfering with each other, such as by colliding with each other on the back surface of the duct (30a), thereby improving the snow throwing distance and the ability to throw snow.

Also, the opening lower end (105) of the auger housing (100)
There is a scraper (115) for leveling the ground on the outside of a).
(11B) is fixed.

(Effects of the Invention) As is clear from the above description, according to the present invention, the overall shape of the snow blower that can scrape up and discharge snow using an auger can be made bilaterally symmetrical, making it compact and weight-balanced. In addition, the power transmission path can be shortened, and the power transmission can be carried out efficiently and reliably.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view of the snow blower, Fig. 2 is an overall side view, Fig. 3 is an overall rear view, Fig. 4 is a view showing the power transmission mechanism, and Fig. 5 is A of Fig. 4. Enlarged view of the section, Figure 6 is the current figure■
Direction arrow view, Figure 7 is a front view showing the auger, Figure 8 (a
) is a side view showing the auger, (b) is a sectional view taken along the line B-B in the same figure, FIG. 9 is a sectional view taken in the direction of the arrow in FIG. FIG. 1 is a diagram showing a conventional technique. In the drawing, (1) is the auger part, (3) is the exhaust duct, (5) is the engine, (7) is the clutch, (7a) is the clutch case, (8) is the handle, and (71) is the power transmission. The shaft (101) is the drive shaft of the auger, and (30b) is the ridge-like projection (guide body). Patent applicant Patent attorney representing Honda Motor Co., Ltd. 1) Part 1
Patent Attorney Kuni Ohashi
Patent Attorney Yuki Koyama Patent Attorney
Field 1) Shigeru Figure 9 Figure 11

Claims (1)

[Scope of Claims] A snow blower in which an auger installed horizontally at the front of the machine is rotated by engine power to scrape accumulated snow toward the center of the auger and discharge it upward, comprising: transmitting engine power to the auger. A snow blower characterized in that a power transmission shaft extends rearward from the center of the drive shaft of the auger, and the power transmission shaft is coaxially connected to the output shaft of the engine.