SU1355605A1 - Construction tower - Google Patents

Abstract

This invention relates to a lifting and transport machinery. The purpose of the invention is to expand the operational capabilities of ri and increase the productivity of the use of the tower. The construction plate comprises a swing frame 1 carrying a sliding boom consisting of section 2 and a slide section 3, a mechanism 4 for raising and lowering the boom, a cradle 5 mounted at one end of the sliding section 3 of the boom. Section 2 by means of the hinge 6 is fixed on the rotary frame 1. Through section 2 passes the copier 7 mounted on the rotary frame 1, and at the other end of the sliding section 3 is mounted the roller 8, which interacts with the curvilinear supporting surface of the copier 7. 1 Il. oo ate ate o5 o ate

Description

The invention relates to an overhead transport MauDiHaM, namely, building towers with a telesconic boom, designed to work in cramped conditions of the building, for example, for lifting workers during the repair of building facades.

The purpose of the invention is to expand the operational capabilities and increase productivity and: use of the tower.

The drawing shows a construction tower at the building, about 11;

The construction tower contains a rotating frame 1 carrying a sliding boom consisting of a root section 2 and a sliding section 3, a mechanism for raising and lowering the boom (hydraulic cylinders) 4, an apk 5 mounted at the end of the connecting boom of the 3-section boom ,. The root section 2 with the help of the hinge 6 is fixed on the swing frame 1. A copier 7 passes through the root section 2 mounted on the swing frame 1. At the end of the sliding section 3, the roller 85 is mounted and interacts with the curvilinear supporting surface of the copier 7 1 (curvilinear support surface of copier 7 has the form defined by the equation

B

 1 cos Ljl Ensuring the permanent departure of the tower when the angle of inclination changes, it to the horizon is as follows,

Using the mechanism 4 for raising and lowering (hydraulic cylinders) of the boom, the angle of inclination to the horizon of the root section 2 is changed.

mass and cargo abutted in curvilines

mounted on frame 1, the sliding section 3 moves relative to the root 2, which entails lengthening or shortening for the 1st sliding boom of the crane, llppi increasing the boom angle to the horizon increases the length of the boom, while decreasing tilt angle - boom length is reduced. This change in boom length is due to

- I.

Pi

changes in the distance between the roller 8 and the hinge 6 (polar radius (Figs, 1 and 2), which is variable and is found from the relation

 „„

С013 If,

Thus, the extension and shortening of the length of the sliding boom of the tower installed near building 9, depending on its angle of inclination to the horizon, ensuring the stability of the boom departure, occurs automatically when the mechanism of the nodes, ... ema and lowering of the boom (hydraulic cylinders) operate due to the interaction the roller 8 with the curvilinear supporting surface of the copier 7 having the form j defined by the equation

B

cos C.

f Formula

the invention

A construction block containing a support frame with a mounted copier with a curvilinear supporting surface and a w: earned fixed boom in Ey: two-window section

equipped with a roller mounted on its end with the ability to move along a curvilinear support surface of the copier, and a mechanism for raising and lowering the retractable boom,

about tl and ch and y shch and with. By the fact that., in order to expand the operational possibilities and increase the productivity of the use of the tower, the profile of the curvilinear support surface of the copier is defined in the polar coordinate system by the formula

p .., „..„ g cos If.

Where

the polar radius of the profi.p point of the curvilinear support surface of the copier with the pole J coincides with the center of the ball, nira; the polar angle of the i-th point of profile J is measured from the polar horizontal axis passing through the center of the hinge;

vystrelyJ measured from the center of the hinge; the length of the sliding section of the shooter ;.

Claims (1)

about r m at l of the invention '· 9 A construction tower containing a support frame with mounted thereon, a copier with a curved supporting surface and a pivotally mounted sliding boom, a retractable section of which is equipped with a roller mounted on its end with the ability to move along the curved supporting surface of the copier, and a mechanism for raising and lowering the sliding boom, o t l and u with the fact that., in order to expand operational capabilities and increase productivity using the tower, the profile of the curved supporting surface of the copier is determined flax in the system of polar coordinates by the formula COS If ¹ hours λ p - polar radius of the i-th point ^{1 of the} profile of the curved supporting surface of the copier with a pole coinciding with the center of the hinge; the polar angle of the i-th point of the profile, measured from the polar horizontal axis passing through the center of the hinge; boom reach, measured from the center of the hinge; R. · the length of the retractable section arrow :.