JPH0426491Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a snow removal machine that is constructed by equipping a self-propelled vehicle body with a snow removal machine consisting of an auger part and a thrower part, and is particularly applicable to the snow removal work described above. This relates to improvements to the device that drives the machine.

(b) Prior Art As is well known, a typical snow blower is constructed with an auger section that collects snow and a blower section that blows out the collected snow. Conventionally, the blower shaft in the blower section is interlocked and connected to the output section of the vehicle body, and the auger shaft in the auger section is driven in common by using the blower shaft as an input shaft, so that the blower and the auger can It is constructed so that the vehicle body output section and the blower shaft can be activated or stopped at the same time by engaging or disconnecting a clutch interposed in a transmission system that interlocks and connects the vehicle body output section and the blower shaft.

(c) Problems to be solved by the invention Conventional snow blowers have a structure in which both the auger and blower are operated or stopped simultaneously by the intermittent operation of a single clutch, and only the auger is stopped while the blower is operated. When the blower part became clogged, if the auger was stopped and the snow supply was temporarily interrupted to avoid further clogging, the blower remained clogged and stopped at the same time. Resulting in. Therefore, in order to relieve the clogged state of the blower section, the snow inside the blower section must be manually removed, which is inconvenient.

Therefore, the present invention improves the drive device of a snow removal machine, which consists of a blower section and an auger section, to reduce the possibility of the blower section becoming clogged. To provide a snow blower which can eliminate a clogged state without requiring manual snow removal work.

(d) Means for solving the problems That is, the present invention interposes the blower clutch 11 in the transmission system D1 that interlocks and connects the output part 10 of the vehicle body 1 and the blower shaft 9, and the blower part B Another auger clutch 13 is interposed in the subsequent auger transmission system D2, and both clutches 11 and 13 are
The blower clutch 11 can be operated intermittently separately.
After connection, the auger clutch 13 is connected to the control mechanism 16 in the working machine driving device of the snow blower.

(E) Operation In the snow removal machine using the working machine driving device of the present invention, when the snow removal working machine starts operating, first the blower clutch 11 is connected, and then the auger clutch 13 is connected. Therefore, when the auger section operates to collect snow and supply it to the blower section, the blower section is always operating, so it is possible to prevent the blower section from becoming clogged from the initial stage of starting work. As a result, safe work can be carried out efficiently with less clogging of the blower section.

Even if the blower section becomes a little clogged during snow removal work, it is possible to stop only the auger section and temporarily interrupt the snow supply to the blower section. The clogged condition can be automatically cleared by discharging the snow that has stagnated in the area using a blower that continues to operate, and the system can be efficiently restored to normal condition without the need for manual removal.

(f) Embodiments Next, embodiments of the present invention will be explained with reference to the drawings.

The snow blower shown in the figure is configured as a walk-control type, and as shown in Figs. 5 and 6, the vehicle body 1 is
The snow removal machine is equipped with a snow removal machine working machine 2 on the front side in the direction of movement so that it can be raised and lowered from the ground.

The vehicle body 1 runs by driving a pair of left and right crawler traveling devices 4, 4 installed below the frame 3 with the power of an engine 5 mounted on the frame 3, and can be operated by a driving section 6 at the rear of the frame 3. It is configured as follows.

The snow removal work machine 2 is composed of an auger section A and a blower section B, and the housings of both sections A and B are internally communicated through a snow collection port 7.

The rear part of the blower shaft 9 of the blower section 8 installed in the housing of the blower section B is interlocked and connected to the output shaft 10 on the vehicle body 1 side via a transmission system D1, and a blower clutch 11 is interposed in the transmission system D1. will be equipped. Further, the front portion of the blower shaft 9 extends forward from the snow collection port 7 and is interlocked and connected to a transmission case 12 disposed at the center of the auger section A in the width direction of the housing.

Inside the transmission case 12, a transmission system D2 including an auger clutch 13 is provided, and an auger shaft 14 driven by the transmission system projects left and right from the transmission case 12, and an auger body 15, It is equipped with 15.

And the intermittent actuator 17 of the auger clutch 13
and the intermittent actuator 18 of the blower clutch 11 are connected to the control mechanism 16, respectively, and the control mechanism 1
6, both clutches 11 and 13 can be operated intermittently, and when the clutches are connected, the auger clutch 13 is activated after the blower clutch 11 is connected.
It is configured so that it is connected.

The illustrated blower clutch 11 includes a pulley 19 on the output shaft 10 and a pulley 20 on the blower shaft 9.
The belt 21 that wraps around the belt 21 is tensioned and relaxed by a tension roller 23 that is maintained in a fixed position by a spring 22 beyond the dead center.

In addition, the auger clutch 13 engages a pinion bevel 24 fitted on the blower shaft 9 or a transmission shaft connected thereto with a passive bevel 25 loosely fitted on the auger shaft 14, so that the auger clutch 13 can be slidably moved on the auger shaft 14. The fitted clutch body 26 is slid by the intermittent actuator 17 to cause its meshing teeth to engage and disengage from the clutch teeth of the passive bevel 25, and furthermore, both clutches 11,1
The control mechanism 16 for intermittently operating 3 is constructed as follows.

In other words, a lever shaft 28 is installed in the operation box 27 of the driving section 6, and the base of the operation lever 29 can be tilted in the direction of the lever shaft and rotated in the direction orthogonal to the lever shaft at the intermediate part of the lever shaft 28. the upper part of the operating lever 29 to the dash panel 3 on the upper surface of the operating box 27.
It penetrates into the guide groove opened at 0.

As shown in FIG. 3, the guide groove is formed by connecting and opening the blower clutch actuation guide groove 32 and the auger clutch actuation guide groove 33 from both ends of the neutral groove 31 in opposite directions, so that the guide groove has a square shape in plan view. , in the blower clutch operation guide groove 32, the neutral groove 31
The groove end connected to is the blower clutch connection position N1
In addition, in the auger clutch operation guide groove 33, the groove end connected to the neutral groove 31 becomes the auger clutch cutting position N2, and the groove end on the opposite side becomes the blower clutch cutting position BOFF. is the auger clutch connection position AIN
It is made so that.

A blower clutch arm 35 is provided with an engaging recess 34 into which the operating lever is fitted, on the lever shaft 28 on both sides of the fitting portion of the operating lever 29.
and an auger clutch arm 37 having an engaging recess 36 is fitted so that the openings of the engaging recesses 34 and 36 face each other, and each can be rotated in a direction perpendicular to the lever shaft 28. One end of the operating cable 38 is connected to the blower clutch arm 35 side with a dead center maintaining structure, and the other end of the operating cable 38 is connected to the blower clutch disconnection actuator 18, and the auger clutch arm One end of the operating cable 39 is connected to the dead center maintaining structure on the 37 side, and the opposite end is connected to the auger clutch disconnection actuator 17.

Further, a sensor 40 for detecting the rotation of the blower shaft 9 is connected to the blower shaft 9, and an alarm device 41 is connected thereto.
The operating circuit and the auger clutch connection limiting mechanism 42 operating circuit are connected, and when the rotation of the blower shaft 9 is below a set value, the detection signal from the sensor 40 operates the alarm 41 and the auger clutch connection limiting mechanism 42 is activated. It is configured to switch to the auger clutch connection blocking position.

In the snow blower configured as in the embodiment,
When the blower clutch arm 35 and the auger clutch arm 37 are not both located in the neutral groove 31, the operating lever 29 in the control mechanism 16
However, they cannot be inserted into the engagement recesses 34 and 36 and replaced.

Therefore, the operating lever 29 is located at the blower clutch disconnection position of the blower clutch operation guide groove 32.
When the blower clutch arm 35 is at the BOFF position, it fits into the joint recess 34 of the blower clutch arm 35, moves the arm 35 to the cutting position BOFF, and maintains the position by the dead center crossing structure. The auger clutch arm 37 has an operating lever 2.
9 is not engaged, the auger clutch arm 37 is maintained at the auger clutch disconnection position N2 by the dead center crossing structure, and both the blower clutch 11 and the auger clutch 13 are maintained in the disconnected state.

Next, when starting the operation of the snow removal work machine 2, when the operating lever 29 is moved along the blower clutch operation guide groove 32 to the blower clutch connection position N1, the operating lever 29 is connected to the engagement recess 3.
The blower clutch arm 35 that is engaged at point 4 is also moved in the same way and moved to the same position N1 due to the dead center crossing structure.
When the blower clutch arm 35 moves, the operating cable 38 is engaged and the blower clutch 11 is
is connected and the blower 8 starts operating.

Thereafter, when the operating lever 29 is tilted along the neutral groove 31 to the side of the auger clutch operation guide groove 33, the operating lever 29 will fit into the engagement recess 36 waiting at the auger clutch disconnection position N2. If the operating lever 29 is moved from the same position N2 along the auger clutch operation guide groove 33 to the auger clutch connection position AIN, the operating cable 39 is engaged with the movement, the auger clutch 13 is connected, and the auger bodies 15, 15 will start operating.

By the way, when attempting to connect the auger clutch 13, if the rotation of the blower shaft 9, which has already started operating, is below a set value, the sensor 40 detects the rotation state below the set value and issues a detection signal. The alarm device 41 is activated, and the auger clutch connection limiting mechanism 42 is switched to the auger clutch connection blocking position (as shown by the imaginary line in FIG. 1).

Therefore, the operator is notified by the alarm 41 that the blower shaft 9 is in a low rotation state below the set value, and even if the operator attempts to move the operating lever 29 to the auger clutch connection position AIN, the auger clutch is not connected. The restriction mechanism 42 prevents the operation lever 29 from moving, thereby preventing the auger clutch 13 from engaging when the blower shaft 9 is rotating at a low speed, and the rotation of the blower shaft 9 increases beyond the set value. The blower shaft 9
If the rotation of the alarm device 41 increases below the set value, the alarm device 41
stops, the blocking position of the auger clutch connection limiting mechanism 42 is released, and the operating lever 29 can be moved to the clutch connection position AIN.

The auger clutch connection limiting mechanism 42 in the embodiment connects the blocking lever 43 that retracts and retracts from the auger clutch operation guide groove 33 to the motor 45 through the movable part 44, and controls the motor 45 to stop operating based on the detection signal from the sensor 40. and the blocking lever 43
Although it is configured to switch between a state of protruding into the auger clutch connection guide groove 33 and a state of retracting from the same groove 33, this may be replaced by other appropriate means without any problem. Further, in the embodiment, the structure is such that the auger clutch connection limiting mechanism 42 and the alarm device 41 are both provided, but this may be modified to a structure that is equipped with only one of the above. It is also good.

(g) Effects of the invention The invention has the following advantages:
A blower clutch 11 is interposed in the transmission system D1 interlockingly connecting the parts, and another auger clutch 1 is installed in the auger transmission system D2 after the blower part B.
3, both clutches 11 and 13 can be operated intermittently and connected to a control mechanism 16 so that the auger clutch 13 is connected after the blower clutch 11 is connected. Since this is a work machine drive device, when the work machine is operated, the blower clutch 11 is first connected, and then the auger clutch 13 is connected, so that the auger part A collects snow. When supplying snow to blower section B, blower section B is always operating and discharges the supplied snow, so work can be carried out efficiently and safely with less snow clogging in the blower section. Even if something seems to be clogging, in that case, stop only the auger section A, temporarily interrupt the snow supply to the blower section B, and then operate the blower to remove the snow stagnant in the blower section. The clogging condition can be cleared by discharging the clog, and the normal condition can be efficiently restored without the need for manual removal.

In addition, if the sensor 40 is installed in conjunction with the blower shaft 9, and the sensor detects a signal that prevents the auger clutch from connecting when the blower shaft rotation is below a set value, the blower shaft rotation will be sufficient. Snow is supplied to blower part B in a state where
Accidents such as clogging or engine stoppage can be avoided, and work can be done more conveniently.

[Brief explanation of the drawing]

Fig. 1 is an exploded explanatory view showing the main structure of the device of the present invention, Fig. 2 is an enlarged sectional view showing the operating state of the control mechanism section, Fig. 3 is a partial view as viewed from the arrow in Fig. 2, and Fig. 4 2 is a partial cross-sectional view of FIG. 2, FIG. 5 is an overall plan view of the snow remover according to the present invention, and FIG. 6 is a partially cutaway overall side view of the snow remover. DESCRIPTION OF SYMBOLS 1...Vehicle body, 9...Blower shaft, 10...Output shaft, 11...Blower clutch, 13...Auger clutch, 16...Control mechanism, 40...Sensor for detecting blower shaft rotation, 42... Auger clutch connection restriction mechanism, D1...Blower transmission system,
D2...Auger transmission system.

Claims (1)

[Claims for Utility Model Registration] 1. A blower clutch 1 is provided in a transmission system D1 that interlocks and connects the output shaft 10 of the vehicle body 1 and the blower shaft 9.
1 is interposed, and another auger clutch 13 is interposed in the auger transmission system D2 after the blower part B, so that both clutches 11 and 13 can be operated on and off separately, and the auger clutch 13 can be operated on and off after the blower clutch 11 is connected. A working machine drive device for a snow remover, characterized in that a clutch 13 is connected to a control mechanism 16 to be connected. 2. A sensor 40 for detecting the rotation of the blower shaft 9 is installed, and the detection signal of the sensor is linked to be applied to the auger clutch connection limiting mechanism 42, and when the blower shaft rotation is below a predetermined value, the limiting mechanism 42 is activated. A working machine drive device for a snow blower according to claim 1, which is configured to switch to an auger clutch connection blocking position.