SU1227798A1 - Extensible ladder - Google Patents

Description

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The invention relates to a device for collecting fruits, as well as for pruning fruit-bijix and ornamental trees.

The purpose of the invention is to increase the reliability of operation.

Figure 1 shows a ladder in a raised position; figure 2 - section aa in figure 1; on fig.Z - section bb in figure 2; ia figure 4 - ladder, side view; figure 5 is a section b-In figure 4; figure 6 is a latch, side view; figure 7 - section GG in figure 6; on Fig - section dD in Fig.6.

The movable ladder includes telescopically installed profiled lower 1 and upper 2 struts, flat steps 3, guide brackets 4, struts 5 and clamps, each of which is made in the form of an L-shaped bracket 6 with wall of various lengths, moreover, on KOHiLie of a longer wall 7 of the bracket 6 there is a fixing pin 8, and on the inner surface of the shelf there is a separating pin

9. The walls of the pillars 1 and 2 are made with holes 10 under the fixing pin 8, and the U-shaped brackets 6 are fixed on the adjacent walls of the racks 1 and 2 with the location of the dividing pin 9 between the walls. In order to harvest high trees, the upper movable racks 2 of the ladder extend to the required height and are fixed as follows. When aligning the holes 10 of the lower 1 and upper 2 racks, the worker with one hand holds the upper racks, and with the other, inserts the fixing pin 8 into the holes. Then, turning the U-shaped bracket 6, introduces the dividing pin 9 into the gap between the adjacent walls of the pillars 1 and 2. The side

the walls of the U-shaped bracket 6 cover the walls of the uprights 1 and 2.

With such an arrangement of the retainer, the racks 1 and 2 of the stairs are securely fastened and the possibility of self-unlocking of the racks is excluded.

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Claims (1)

SLIDING LADDER, including telescopically mounted profiled lower and upper racks, flat steps and clamps, characterized in that, in order to increase the reliability of work, guide brackets are installed on the upper ends of the lower racks, and each clamp is made in the form of a U-shaped bracket with different walls length, moreover, a fixing pin is installed at the end of the longer bracket wall, and a dividing pin is installed on the inner surface of the shelf, while the walls of the racks are made with holes for the fixing pin, and P-arr znye brackets are fixed to the walls of the adjacent racks located between the walls separating pin. FIG. Guy with QO