JPH03107008A - Snow blower auger height adjustment device - 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 an auger height adjustment device for a snow blower. [Prior art] A snow blower uses an engine to rotate an auger placed in front of the main body to scrape up snow, and a blower behind the auger blows the snow out of the chute. The height of the auger is configured to be adjustable manually or hydraulically depending on snow quality, road surface conditions, etc. (see, for example, Japanese Patent Laid-Open No. 110306/1983). [Problems to be Solved by the Invention] However, many of the conventional devices have a rough structure, and the present invention has a simple structure, has good operability by manual operation of the operating handle, and can be easily moved to a desired height position. [Means for Solving the Problems] The structure of the present invention aims to provide an auger height adjustment device for a snow blower in which the auger can be placed at the front. In a snow blower, the height of the auger in front of the main body is adjusted by freely supporting the main body and rotating the rear part of the main body vertically about the front axle with respect to the running part. The lower ends of the lower links are attached to both ends of a shaft extending in the left-right direction, the upper links are rotatably connected to the upper ends of these lower links, and the upper ends of these upper links are rotated to the main body. It is movably supported and fixed to a rotation shaft extending in the left and right direction,
An auger height adjustment handle is provided that is fixed to the rotating shaft to rotate the rotating shaft, and a locking member that is fixed to the main body and has a plurality of locking grooves in the front and back direction is provided, and the auger height is fixed to the main body. The invention is characterized in that the height adjustment handle can be locked in the locking groove of the locking member at a desired rotational position. [Operation] When adjusting the height of the auger, rotate the auger height adjustment handle to rotate the rotation shaft, and at the desired rotation position, lock the auger height adjustment handle to the locking member. Lock it in the groove. At this time, when the rotation shaft is rotated by the auger height adjustment handle, the upper link fixed to it rotates.
In relation to the lower link, the vertical position of the upper end of the upper link changes, which causes the rotation axis to move in the vertical direction, and as a result, the main body supporting the rotation axis rotates in the vertical direction around the front axle. The auger at the front of the main unit moves up and down, changing the height of the auger. [Embodiment] In FIG. 1, a snow blower 1 is equipped with a blower housing 3 and an auger housing 4 in front of a zero body 2, which has an engine, a traveling 1+7, etc. fixed to a body frame, and a blower housing 3 and an auger housing 4 inside the auger housing 4. The auger 5 is rotationally driven by the engine of the main body 2 to scrape up snow, and the snow is discharged from a chute 6 provided on the blower housing 3 by a blower in the blower housing 3 to remove snow. The main body 2 is rotatably supported at its lower front by a drive axle 7 of a running section. Therefore, when the main body 2 rotates in the vertical direction about the driving axle 7 of the traveling section, the auger 5 also rotates together, and the height position of the auger 5 changes. Hereinafter, a mechanism for vertically rotating the auger 5 about the driving axle 7 of the traveling section and setting it at a desired height position will be explained in detail with reference to FIGS. 1 to 5. In FIG. 1, 8 is a drive wheel attached to both ends of a drive axle 7 extending in the left-right direction of the zero body 2, 9 is a driven axle extending in the left-right direction behind the main body 2, and 10 is a drive wheel attached to both ends of the driven axle 9. A crawler 11 is spanned between the driving wheel 8 and the driven wheel IO. Then, the power of the engine of the zero body 2 is transmitted to the drive axle 7 via the traveling miffsine, rotates the drive shaft 8, and causes the snow blower l to travel by the crawler 11. In Figs. 1 and 2, reference numeral 12 denotes a connecting frame connected between the driving axle 7 and the driven axle 9, which are provided in pairs on the left and right between the main body 2 and the crawler 1l, and are supported between the rear parts thereof. The lower end of a lower link 14 is rotatably attached to both ends of the fixed shaft 13, and the lower end of an upper link 15 is rotatably connected to the upper end of the lower link l4 by a connecting pin 16. The upper end of the upper link 15 is fixed to a concave shaft l7 extending in the left-right direction of the main body 2, and the rotary shaft 17 rotates between a pair of left and right brackets 18 provided at the rear end of the main body 2 so as to protrude rearward. Possibly supported. An auger height adjustment handle 19 is disposed vertically behind the right end when viewed from the rear of the rotation shaft 17, and a technical part 19a protruding forward at the lower part of the handle 19 is attached to the rotation shaft l7. It is fixed to. As shown in FIG. 1 and FIGS. 3 to 5, the main body 19b of the auger height adjustment handle l9 is formed by inserting a locking rod 21 into a rod-shaped pipe 20 extending vertically with a closed upper end and an open lower end. The locking bar 2l is urged downward by a spring 22 inserted into the upper end of the rod-shaped pipe 20. A grip part 20a provided at the upper end of the rod-shaped pipe 20
An operating lever 23 is supported so as to be rotatable in the front and rear directions around a support shaft 24. The gripping portion 23a of the operating lever 23 is connected to the gripping portion 20a of the rod-shaped pipe 20 from the support shaft 24.
The operating portion 23b extends downward from the front of the gripping portion 23a, and the operating portion 23b extends rearward from the upper end of the gripping portion 23a of the rod-shaped pipe 20.
The rod-shaped pipe 2 is inserted through the notch 25 provided in the a part.
It is inserted within 0. The operating portion 23b is inserted into a locking groove 26 formed on the outer periphery of the upper end of the locking rod 21 to hold the locking rod 21 in a predetermined position. Therefore, when the operating lever 23 is grasped together with the gripping part 20a of the rod-shaped vibrator 20 and the gripping part 23a of the operating lever 23 is rotated toward the gripping part 20a of the rod-shaped pipe 20, the operating part 23b
rotates upward to push up the locking rod 21 against the spring 22 and remove it from the locking groove 28 of the locking plate 27, which will be described later. A locking plate 27 is arranged below the auger height adjustment handle 19. The locking plate 27 is a side arc-shaped plate whose front end is fixed to the bracket l8 on the right side when viewed from the rear of the main body 2 and projects rearward.
A plurality of locks 128 are formed on the lower upper surface of 9. The lower end of the rod-shaped pipe 20 of the auger height adjustment handle l9 is shaped like a fork, and a locking plate 27 is inserted into the fork. The lower end of the locking rod 2l, which is urged downward at 22, is inserted. Reference numeral 29 denotes a pair of left and right handle pipes extending rearward and upward from the main body 2. A grip portion 29a is provided at the upper end of the handle pipe 29, and an operation panel 30 is provided between the left and right handle pipes 29 in front of the grip portion 29a. The auger height adjustment handle 19 is inserted through a guide hole formed on the upper surface of the operation panel 30, and its grip portion 20a protrudes above the operation panel 30. The height adjustment of the auger 5 will be explained below. In FIG. 1, the locking rod 21 of the auger height adjustment handle l9 is locked [2].
7, and the rear end of the main body 2 is connected to a pair of links 14, l5 and an auger height adjustment handle 19.
The auger 5 is held at a predetermined height position from the fixed shaft 13 via the auger 5. If the height position of the auger 5 is to be lowered from the illustrated state, the following operation is performed. First, remove the operating lever 2 together with the grip portion 20a of the auger height adjustment handle l9.
3 and rotate the grip part 23a backward. Then, the operation part 23b connected to the grip part 23a rotates upward, pushing up the locking rod 21 and pushing up the locking groove 28 of the locking plate 27.
to separate from As a result, the auger height adjustment handle l9 becomes rotatable in the front-back direction, so tilt the handle 19 forward and hold the grip part 23a of the operating lever 23 at a predetermined position.
When the grip is released, the locking rod 21 is pushed downward by the spring 22, its lower end is inserted into the rear locking groove 28, and the auger height adjustment handle l9 is held in that position. At this time, when the auger height adjustment handle 19 is tilted forward, the rotation shaft 17 fixed to the handle 19 is rotated forward. As a result, the lower link l5 fixed to the rotation shaft 17 rotates rearward about the rotation shaft 17, and the rotation shaft l7 is pushed upward in relation to the lower link l4, and as a result, the main body 2 The rear end is rotated upward around the drive axle 7. Therefore, as a result, the auger 5 at the front of the main body 2 moves downward, and its height position becomes lower. Moreover, if the height position of the auger 5 is to be raised from the illustrated state, the auger height adjustment handle l9 may be tilted backward and the same procedure as above may be performed. That is, first, grip the operating lever 23 together with the grip part 20a of the auger height adjustment handle 19, push up the locking rod 2l, and press the locking groove 2 of the lock vi 27.
Remove from 8. Then, when the handle 19 is tilted backward and the grip portion 23a of the operating lever 23 is released at a predetermined position, the locking rod 2l is pushed downward by the spring 22, and its lower end is inserted into the locking groove 28 in the front. However, the auger height adjustment handle l9 is held in that position. At this time, if the auger height adjustment handle l9 is tilted backwards,
The rotation shaft l7 fixed to the handle 19 rotates backward.
As a result, the upper link 15 fixed to the rotation shaft 17
The lower link 14 rotates forward around the rotation axis l7.
In relation to this, the rotation shaft l7 is pushed downward, and as a result, the rear end of the main body 2 is rotated downward about the drive axle 7. Therefore, as a result, the auger 5 at the front of the main body 2 moves upward, and its height position becomes higher. [Effects of the Invention] As explained above, according to the present invention, the height position of the auger can be easily adjusted by rotating the auger height adjustment handle, the structure is simple, and the auger height can be adjusted easily. By extending the adjustment handle to the top of the operation panel located near the grip of the control handle, the lever ratio can be increased, making it possible to generate enough load to move heavy objects such as the main body up and down, making it possible to use the conventional foot pedal method. Unlike the previous model, the height of the auger can be adjusted with one hand even during work, providing excellent operability.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of the snow blower, Fig. 2 is a rear view of its main parts, Fig. 3 is a cross-sectional view of the vicinity of the grip of the auger height adjustment handle, and Fig. Figure 4 is a sectional view showing the lower end of the auger height adjustment handle and the temporary locking part;
The figure is a side sectional view of Figure 4. 1 is the snow blower, 2 is the main body, 5 is the auger, 7 is the drive axle, 8
is a driving wheel, 9 is a driven axle, 10 is a driven wheel, 11 is a crawler, 12 is a connecting frame, 13 is a fixed shaft, 14 is a lower link, 15 is an asper link, 16 is a connecting bin, 17
is a rotating shaft, 18 is a bracket, l9 is an auger height adjustment handle, 20 is a rod-shaped pipe, 21 is a locking rod, 22 is a spring, 23 is an operating lever, 24 is a support shaft, 26.28 is a locking groove, 27 is a locking plate, 29 is a handle vibe, and 30 is an operation panel.

Claims (1)

[Claims] The height of the auger in front of the main body can be adjusted by rotatably supporting a main body equipped with an auger at the front on the front axle, and rotating the rear part of the main body vertically about the front axle with respect to the running section. In the snow blower to be adjusted, lower ends of lower links are attached to both ends of a shaft extending in the left-right direction at the rear of the running section, and upper links are rotatably connected to the upper ends of these lower links, respectively; The upper ends of these upper links are rotatably supported by the main body and fixed to a rotation shaft extending in the left-right direction, and an auger height adjustment handle is fixed to the rotation shaft and rotates the rotation shaft. At the same time, a locking member is provided that is fixed to the main body and has a plurality of locking grooves in the front-rear direction, and the auger height adjustment handle is locked in the locking groove of the locking member at a desired rotation position. An auger height adjustment device for a snow blower, which is characterized by the following: