SU39366A1 - Swivel cantilever crane - Google Patents

Description

In the rotary fixture for a cantilever crane, according to the author's certificate No. 37306, the skeleton of the cantilever crane is rotatably attached to the stand, and a channel stump is attached to the crossbar, in which a cable is clamped, the ends of which are bent from the channel. The crane is turned by the tension of the cable ends.

In the proposed modification of the rotary device according to the author's certificate No. 37306, the beam mounted on the crane stand and intended to guide the ends of the cable is tubular with a slot in the lower part for convenient insertion of the cable.

In FIG. 1 shows a general view of a part of the crane equipped with the proposed device and FIG. 2 is a view from above.

The fixture consists of a metal tubular beam / bent in the MC part along an arc of a circle with a center coinciding with the geometric axis of rotation of the cantilever arm, in the AP part also curved in an arc of a circle and in parts PB and AM along the straight line. The beam / has a slot 8 along its entire length, with the exception of the places covered by collars 4 and sleeve 5, slot 5

(509)

serves for convenient insertion of the cable 7. The slot with the rounded-off part of the AP rotates with respect to the pipe axis by 90 Cable 7 is attached by squeezing fO to the // shelf, in turn by means of squeezing 72 fixed to the console / 5 of the crane. When the cable is set in motion, the channel entails, and this is how the console rotates. When moving, the cable slides along the bottom of the tubular beam / or along the rollers 6; when using rollers, they are located along the entire length of the beam. Part 2 of the beam is attached to the rest of the beam 7 by means of a sleeve 3, which is screwed directly onto both connecting ends. The strut 5, which serves to install and hold the beam in the desired position, has clamps 77 at the ends. The tubular parts of the beam are fastened by the studs 9, which are inserted into the beam wall and supported by the collar 4. Rotation of the console with this device is possible at a maximum angle allowed by the design of the console. Plowing is done in the following way. Initially, place the struts 5 in the desired position on the stand (if necessary, slightly pierce the tree) and attach

to crutches or screws 14; clamps 4 are then put on, the vertical part of the pipes is inserted into the sockets formed by the girths 17 of the spacers 5 and clamps 4, and the clamps 4 are slightly tightened. After that, the sleeve 5 is screwed in and after the adjustment of the beam is completed, the clamps are finally bolted 16. Digit 75 marks possible fixture position. Rollers b can be set to. ball bearings, as well as console fins, to reduce friction resistance. The spacers 5 for adjusting the position of the fixture with respect to the center of rotation of the cantilever (having in mind the different size of the log stand), metal plates with holes for the bolts 16 can be inserted.

The subject matter of the invention.

Claims (3)

1. Changing the turning device for a cantilever crane, according to the author's certificate No. 37306, characterized in that the beam 7 is tubular with a slot 8 in the lower part for convenient insertion of the cable 7. 2. The shape of the device according to claim 1, characterized in that the beam 7 in the MK part is bent along an arc of a circle with a center that coincides with the geometric axis of rotation of the console post, in parts of the AP also bent in an arc of a circle and in parts PB and AM is made in direct. 3. Use in the tool according to claim 1 of the guide rollers 6 to facilitate the advancement of the ends of the cable 7. l m if. fig .