JPS592074Y2 - Horse jack for maintenance lift - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a horse jack used in conjunction with a maintenance lift for agricultural machinery such as a tractor or combine harvester having a crawler traveling device, and its purpose is to facilitate the attachment and detachment of the crawler of the agricultural machinery. It is something.

Embodiments of the present invention will be described below with reference to the drawings.

That is, in the present invention, a threaded shaft 2 of an appropriate length is provided protruding downward from the lower surface of a support plate 1 formed to support the lower surface of the vehicle body of agricultural machinery or an axle, etc., and a round bar of an appropriate length is provided. A column 5 is formed by providing a threaded hole 3 at one end to be screwed into the screw shaft 2, and a number of pin holes 4 at appropriate intervals in the diametrical direction of the round bar on the side surface of the bar. A bracket 8 is formed by protruding arms 7 laterally from a shaft tube 6 that slidably fits into the support column 5, and a shaft tube 9 that slidably fits into the support column 5 is vertically attached. The support leg 11 is formed by integrating the leg 10 that is held in the state, and the support leg 5 on which the bracket 8 is fitted is inserted into the shaft tube 9 of the support leg 11, and the stopper pin 12 is inserted into an arbitrary pin hole 4. By inserting the stopper pin 13 into the lower pin hole 4 of the bracket 8, the bracket 8 can be fixed to the desired height with respect to the support leg 11. Then, the screw shaft 2 of the support plate 1 is screwed into the screw hole 3 at the upper end of the support column 5 to form a horse-jacket 14.

Note that 10a is a horizontal connecting member between the legs 10.

Next, how to use the horse jack of the present invention constructed as described above will be explained.

In Figures 3 and 4, 20 is the maintenance lift support, 21
22 is a lifting frame that can be raised and lowered with respect to the support column 20, 23 is two mutually parallel horizontal frames protruding forward from this lifting frame 22, and 24 is this frame 2.
3, two loading tables are slidably fitted to the frame 23, 25 is a lifting drive device for the lifting frame 22 provided on the upper part of the support column 20, 26 is a switch for its operation, 27 is a combine harvester, 27a is its crawler, 27b is its axle, and 28 is an ordinary horse-shoe.

To remove the crawler 27a of the combine harvester 27, first lower the loading platform 24 to the ground, then ride the combine 27 onto the loading platform 24 as shown in Figure 3, and then raise the loading platform 24 to a position where it is easy to work. let

In this state, as shown in FIG.
Adjust the height of the axle 27b and install it to support the axle 27b.

The height of the horse jack 14 is adjusted by selecting the insertion position of the stopper pin 12 and the screwing amount of the screw shaft 2.

The bracket 8 is set below the bottom of the loading platform 24 at an appropriate distance.

If necessary, an ordinary horse jack 28 can be installed under the other axle to increase the supporting force.

Next, as shown in FIG. 4, the loading platform 24 is lowered until the top surface of the bracket 8 contacts the bottom surface of the loading platform 24.

In this way, the crawler 27 on the right side in FIG.
a rises slightly above the loading platform 24.

Moreover, since the lower surface of the loading platform 24 is supported by the bracket 8, even if the lift attempts to descend due to a failure or the like, the loading platform 24 is supported by the bracket 8, so it is safe.

Then, as shown in Fig. 4, the crawler 27a
If the crawler 27a is higher than 4, it will be very easy to attach and detach the crawler 27a.

Moreover, there is no risk of the lift being erroneously lowered during this work, so the horse jack of the present invention has the excellent effect of making maintenance work easier and safer.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the horse-shoe of the present invention, Fig. 2 is an exploded perspective view thereof, Fig. 3 is a front view of a maintenance lift showing how to use the horse-shoe of the present invention, and Fig. 4 is a side view thereof. 1...Base plate, 2...Screw shaft, 3...
...Screw hole, 4...Pin hole, 5...
・Strut, 6...Axis cylinder, 7...Arm, 8.
...Bracket, 9...Shaft tube, 10...
...Legs, 11...Support legs, 12゜13...
... Stopper pin, 14 ... Horse jack of this invention.

Claims (1)

[Scope of utility model registration request] It has a support plate with a threaded shaft protruding from its lower surface, a threaded hole at one end of the round bar to be screwed into the threaded shaft, and pin holes bored at appropriate intervals on the side of the round bar. a support column, a bracket having an arm protruding sideways from a shaft tube that is slidably fitted to the support column, a support leg that is slidably fitted to and holds the column in a vertical state, and a support leg that fits and holds the column in a vertical state, and a support leg that is fitted in the pin hole. A maintenance lift Soma jack comprising a stopper pin that is inserted through and locks the support leg to the support leg, and a stopper pin that locks the bracket to the support leg.