JPS602247Y2 - Snow blower that can be attached to and detached from a tractor - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a snow blower, particularly a snow blower that can be detachably attached to the front of an agricultural tractor.

A snow blower disposed at the front of a tractor is known, for example, from Japanese Utility Model Application Publication No. 52-137530 (Kokoku Kokai No. 56-9691).

However, to make it possible for even ordinary farmers to easily attach and detach a snow blower to a tractor.

Also, if the snow blower is located in front of the tractor, there will be problems with stability and the total length will become long, making it impossible to use it in some places due to the turning radius. Therefore, the connecting mechanism between the two should be kept as short as possible. Reduce the spacing.

Furthermore, the snow blower needs to be able to move up and down and rotate left and right depending on the terrain.

Another problem is the arrangement of the long power transmission shaft between the gate shaft at the rear of the tractor and the main shaft of the snow blower at the front of the tractor.

For these reasons, among the above-mentioned removable types, the rear type that is attached to the rear of the tractor is generally in practical use, but since the operator has to twist his or her body to operate backwards, it causes a lot of fatigue and stamina, leading to accidents. There is a strong possibility that it may cause

The object of the present invention is to provide a front-type snow blower that solves the various problems mentioned above.

The illustrated embodiment will be explained in detail.

The rear ends of parallel links 4 and 5 provided on the left and right sides of a main frame 3 of a snow blower 2 are detachably attached to both sides of the front part of a tractor 1.

The intermediate shaft 9 connected to the PTO shaft 7 of the transmission 6 at the rear of the tractor 1 is extended from the lower part of the tractor to just behind the front wheels 1a, and the universal shaft 10 is used to stand diagonally upward on one side of the tractor 1 facing forward. It is raised up and connected to a substantially horizontal shaft 31 supported by a bearing member 30 on the tractor above the front wheel 1a, and the horizontal shaft 31 is connected to the snow blower main drive shaft 8 via the universal telescopic shaft 11.

The telescopic shaft 11 extends from an outer cylindrical shaft 11a and a central shaft 11b which are slidably connected by splines, sliding keys, etc.

A hydraulic mechanism 1 for vertical movement of the snow blower is installed between the bumper 12 of the tractor 1 and the horizontal member 13 passed between the lower links of the parallel links.
Install the cylinder 14a and piston rod 14b of No. 4,
The snow blower 2 is moved up and down by the expansion and contraction of the hydraulic mechanism 14.

In addition, the arms 3a and 1 of the snow blower frame 3 and the snow blower movable part frame 15
As shown in FIG. 4, a hydraulic mechanism 16 for tilting the snow blower is installed between 5a.

Further, a ring 27 is provided integrally with the snow blower frame 3, and a plurality of rollers 28 that engage with the peripheral edge of the ring 27 are provided on the movable part frame 15, so that the parts other than the machine frame 3 of the snow blower 2 can be moved by the expansion and contraction of the hydraulic mechanism 16. tilt the unit left and right.

Although the snow blower 2 is optional, the embodiment shown in the figure includes a scraper 17 integrated with the movable frame 15, upper and lower snow collection screws 18 and 19 at the front of the scraper, and snow collected in the center is thrown to the scraper 17. It is fired from the blower 21 etc. in the frame 15 which bounces up to the chute 20.

The power transmitted from the PTO shaft 7 to the main drive shaft 8 by the power transmission systems 9 to 11 is transmitted to the main drive shaft 8, the gear 23, the intermediate shaft 24, the transmission mechanism 25, and the upper screw 18 as shown in FIG.
- Transmitted from the upper screw shaft to the transmission mechanism 26 and lower screw 19, and from the main drive shaft 8 and transmission mechanism 27 to the blower 21.

25 is a bearing. Since the present invention has the above-mentioned configuration, it has the following effects.

1 Connecting links 5 and 6 between tractor 1 and snow blower 2.

Since the rear end was attached to the side of tractor 1, a parallel link was arranged between the opposing face plates of both 1 and 2.
3 inches, unlike the one described in the same publication No. 69731, the distance between the parallel links 1 and 2 can be shortened while maintaining the required length of the parallel links 4 and 5.

Therefore, the snow blower is located close to the tractor and is stable, and the overall length is short, so turning performance is good.

2. Since the links 4 and 5 are attached and detached using only the mounting screws for the tractor and the coupling screws for the universal joint portion 11c of the universal shaft 11 and the main drive shaft 8, the operation is easy.

3. Since the snow blower vertical movement hydraulic mechanism 14 is provided between the horizontal member 13 integral with the lower parallel link 5 and the bumper 12, the snow blower vertical movement mechanism is constructed to be simple and compact.

In addition, the front movable frame 15 is supported by a plurality of rollers on the ring 27 provided on the rear frame 3 of the snow blower, and the hydraulic mechanism 16 for tilting the snow blower left and right is provided between the frames 3 and 15. The tilting mechanism is also simple and small.

4 Since the transmission system from the Yen0 shaft 7 to the snowplow main drive shaft 8 is arranged above the front wheel 1a on one side of the tractor as described above, it is placed under the vehicle body as in the above-mentioned Japanese Utility Model Publication No. 56-9691. The universal joint, like the one installed in There is no risk of being unable to turn or causing problems with power transmission.

[Brief explanation of drawings]

Fig. 1 is a side view of the snow blower of the present invention, Fig. 2 is a plan view showing its transmission system, Fig. 3 is an enlarged perspective view of the vertical movement hydraulic mechanism of the snow blower, and Fig. 4 is a view of the tilting mechanism of the snow blower. Perspective view. 1 is a tractor, 2 is a snow blower, 4 and 5 are parallel links, 6 is a transmission, 7 is a power take-off shaft, 8 is a snow blower main drive shaft, 9 is an intermediate shaft, 10, 11.31 is a universal shaft, 14.1
6 is a hydraulic mechanism.

Claims (1)

[Scope of Claim for Utility Model Registration] The rear ends of parallel links provided on the left and right sides of the main frame of the snow blower are removably attached to both sides of the front part of the tractor, and are connected to the circular zero axis of the transmission at the rear of the tractor. The intermediate shaft extends from the bottom of the tractor to just behind the front wheels, and the universal shaft stands diagonally upward toward the front on one side of the tractor, and is supported by a bearing member on the tractor above the front wheels. The horizontal shaft is connected to the snow blower main drive shaft via a universal telescopic shaft, and the horizontal member for vertical movement of the snow blower is connected between the tractor bumper and the lower link of the parallel link. A hydraulic mechanism for tilting the snow blower is installed between each arm of the snow blower frame and the snow blower movable frame, a ring is provided integrally with the snow blower frame, and multiple rollers are engaged with the periphery of the ring. is provided on the movable part frame, and the movable parts other than the machine frame of the snow blower are tilted left and right by the expansion and contraction of the hydraulic mechanism, and the snow blower is attachable to and detachable from a tractor.