RU927U1 - Camera crane - Google Patents

Abstract

An operator crane containing a support column carrying a recorder with a boom drive mechanism pivotally mounted on a column made in the form of a parallelogram, on the front end of which there is a platform for a movie camera, and on the rear end there is a balancing device with counterweights, characterized in that the power part of the parallelogram the boom is made with a cross section in the form of a Taurus reinforced in the lower part of the box, while the guide of the balancing device is located symmetrically along it and is made with a cross a cross section in the form of an inverted Taurus, on the vertical part of which are placed counterweights, each of which has a rectangular through groove open at the bottom and mounted with the possibility of longitudinal movement.

Description

Camera crane

The proposed utility model relates to the field of hoisting machines, in particular, to a cinema-teleoperator crane.

A camera crane is known, comprising a trolley on which a support column is mounted, which carries an arrow pivotally mounted and made in the form of a parallelogram, bearing an operator platform at the front end, and a balancing device at the rear end, consisting of a fixed part fixed to the arrow and movable, mounted on the frame of the trolley, kinematically connected among themselves / I /.

A disadvantage of the known crane is the difficulty of performing a balancing device due to the presence of kinematics, which reduces operational parameters. The presence of a fixed part of the load, mounted on the boom, increases the passive mass of the crane and requires increasing the rigidity of the boom. Therefore, the power part of the boom is made in the form of a massive frame structure.

Known camera crane, selected as a prototype, containing a support column, pivotally mounted and made in the form of a parallelogram arrow, on the front end of which there is a platform for a movie camera, and on the back there is a balancing device with counterweights whether installed in pairs on the right and on the the left side of the crane and secured through through round holes without the possibility of movement along the boom of the crane, while the arrow is made in the form of a cast rigid beam with a cross section of complex configuration / 2 /.

To the application J 93009907/11

The execution of the counterweight block of the balancing device in the form of a three-dimensional structure that extends beyond the dimensions of the crane boom, strengthens the passive mass of the crane and is inconvenient to use, since to compensate for the mass of the movie camera installed on the front end of the boom, two loads must be installed (left and right / therefore otherwise, a tilting moment arises, which impedes high-quality panning when using a crane.

In addition, this drawback requires an unjustified margin of safety of the boom, that is, an increase in its mass, which is achieved due to the complex cast structure.

All this reduces the productivity during movie shooting due to the low panning speed, which limits the creative capabilities of the operator.

The objective of the proposed constructive implementation of the camera crane is to reduce the weight of the camera crane while expanding its functional capabilities by reducing interference when shooting in the form of inertia during high-speed panning, as well as increasing the efficiency in preparing for shooting and other operational parameters.

This problem is solved by the fact that in an operator crane containing a supporting column, which is hinged and made in the form of a parallelogram arrow, at the front end of which there is a platform for a movie camera, and at the rear there is a balancing device with counterweights. The power part of the parallelogram of the boom is made with a cross section in the form of a tee reinforced in HPIJP: it has a box part, while the guide of the balancing device is located elliptrically along the boom and is made with the cross

a section in the shape of an inverted Taurus, on the vertical part of which counterloads are placed, each of which is equipped with a right-angled through groove open from below and installed with the possibility of longitudinal movement,

Thus, while simplifying the cross-sectional shape of the power part of the parallelogram of the boom, the mason of the boom is reduced while maintaining rigidity. In addition, the implementation of counterweights 00 through rectangular grooves / 1I, interacting with the vertical part of the guide located along the boom, allows us to provide a new level of stitching; for the camera mounted on the front platform, not only due to the number of counterweights, but also by their longitudinal displacement,.

The proposed operator crane is presented in the following drawings:

FIG. I - general view / side view /;

Fig, 2 is a cross-section along aa / the cross-sectional shape of the power part of the parallelogram of the boom /;

Fig, 3 is a cross-section along BB / cross-sectional shape of the guide of the counterweights and their plan view /.

The operator crane consists of a support column I with an arrow I, made in the form of a parallelogram with a power part 3, needle-shaped cross-section in the form of a Taurus reinforced in the lower part of the box. The boom 2 is mounted on the support column I through the hinge 4, At the front end of the boom 2 there is a platform 5 under the movie camera / not shown /. At the rear end of the boom there is a balancing device 6, consisting of a guide 7 with a cross section in the form of an inverted tee and located along the boom 2, as well as the counterweights 8 mounted on the vertical part of the guide 7 Each counterweight 8 has a rectangular open LOW through groove, at $ o | Me agreed with the vertical part of the guide 7, and IvIex possible longitudinal movement. At the rear end of the boom 2 is also placed the handle of the operator 9.

The operator crane operates as follows.

Simultaneously with the installation of a movie or camera on the platform 5 / not shown / in the balancing device 6, the number of counterweights 8 is equivalent in weight. In this case, the balancing of the boom 2 can be carried out both by longitudinal movement of the counterweights 8 along the guide 7 and by their number a constant, small in weight, counterweight 10 placed directly on the upper link of the parallelogram of the boom 2,

Raising and lowering the boom 2, necessary for vertical pan-tilt or selection of the shooting point, is carried out manually through the handle 9. Moreover, the boom 2 is deployed on the support column I due to the hinge 4. Simultaneously or sequentially, the rotation of the boom 2 around the support column I can be carried out .

The implementation of these panoramas places high demands on arrow 2 for its rigidity, especially for twisting.

These requirements are met by a special cross-sectional profile of the power part 3 of the parallelogram of the boom 2, while both the Taurus II and the box 12 have maximum resistance to twisting and bending, which makes it possible to optically select the mass of the boom and ensure high pan speeds.

-7 lspecification of operational parameters, including ease of maintenance} KEvshya due to the efficiency of installation of unloading loads and the possibility of balancing the longitudinal movement of the bcc;

- Improvement / improvement of technical characteristics by reducing the passive mass of the crane and increasing the speed and smoothness of panning, including by increasing the rigidity of the boom due to the power section selected from the cross-sectional profile.

Sources of information:

1.Auto St. USSR and 8I905I, class B66C 23/72, publ. 04/07/81

2. The prospectus of Qlneteibt for the products of camera equipment Сше / б.,, WisSctoS Ilotc / oy - prototype / cm. attachment/.

Applicant Authors: V.V.Bolshunov

A.I. Miroshnikov Yu.K. Terentyev

Claims (1)

An operator crane containing a support column carrying a recorder with a boom drive mechanism pivotally mounted on a column made in the form of a parallelogram, on the front end of which there is a platform for a movie camera, and on the rear end there is a balancing device with counterweights, characterized in that the power part of the parallelogram the boom is made with a cross section in the form of a Taurus reinforced in the lower part of the box, while the guide of the balancing device is located symmetrically along it and is made with a cross a cross section in the form of an inverted Taurus, on the vertical part of which are placed counterweights, each of which has a rectangular through groove open at the bottom and mounted with the possibility of longitudinal movement.