SU28002A1 - Jack - Google Patents

Description

The invention relates to jacks with a fixed vertical gear rack and a cage or block with a lower gripping foot that is moved along it with the help of a snoring device. In the proposed jack, the yoke or block is made in the form of a lever, which, to rectify the movement of the gripping paw, can move with its free end in the guide slot of the support frame, and in its middle part is connected with an earring with the upper end of the stationary toothed rack.

In the schematic drawing of FIG. 1 and 1 depict a general view of a jack in two projections; FIG. 2 - side view of the bed; FIG. 3 and 3 - type of the holder in two projections; FIG. 4 and 4 - the same handles; FIG. 5 is a view of an earring; FIG; b and 6 are details of the ratchet, and FIG. 7 - a general perspective view of the jack.

On the support bed 75 of the jack (Fig. 2), the fixed toothed rack JJ is fixed, which is covered by the cover J4. The yoke 7 (FIGS. 3 and 31) is made in the form of a lever with a ledge 7 and with a pawl 4 attached with one finger 75 attached on one side. The stud 8 (FIG. 5) pivotally connects the middle part of the yoke 7 to the upper end of the fixed rack 77 Handle 2 (Figs. 4 and 4) covers a snoring gear wheel 6 with dogs Z 4, mounted on axle 5, on which, besides the gear wheel 6, gear 5 is placed, which engages with the fixed gear rack 77. Casing 7, direction This upper end may slightly move horizontally in the slot of 76 °. 75. When lifting the track with a jack, the step / (paw) of the yoke 7 is brought under the rail and the worker, using scrap, inserted into the handle 2, starts to swing the latter and produce this by means of the dog 3 to rotate the gear wheel 6 at a certain angle with each movement handles. The wheel b is rotated together with gear 5, fitted as well as wheel 6 on axle 5 and coupled with vertical gear rack 77, as a result of which gear 5 gradually rises along rail 77 together with axle 7 connected with it 5 with step 7 To maintain the vertical direction when lifting the ledge 7, the hinged pin 8 and the horizontal slot J6 in the upper end of the support frame 75 serve. The ratchet pawl 3 is made flip to allow, if necessary, descend

jack, lower the arm 2 until the protrusion / 2 otgkat doggie 4. For the partial descent of the jack serves finger / 5 on the dog 4.

Subject invention

Jack with a fixed toothed rack and movable along it the holder or

block with the lower gripping paw, characterized in that the holder or block 7 is made in the form of a lever, which, in order to prevent the movement of the gripping paw /, is pivotally connected in its middle part by an earring 8 with the upper end of the fixed toothed rack // and the free end can move in the guide slot of the support frame / 5.

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