RU225849U1 - Container lid lifting mechanism - Google Patents

Abstract

The utility model relates to the field of mechanical engineering, in particular to mechanisms for opening and closing a container lid, having a lid balancing device, and can be used in military equipment, for example, in container-type demining installations. The mechanism for lifting the container lid contains right and left brackets fixed to the container body, a plate torsion bar, a torsion bar tube, which is part of the container lid, and torsion bar cups with the ends of the torsion bar installed in them and placed with one end in the brackets, and the other end in the torsion bar tube, and one The torsion bar cup contains a groove filled with rollers to ensure its rotation in the torsion bar tube, and the second cup contains a pin for transmitting torque from the torsion bar to the container cover, while one torsion bar cup is rigidly fixed in the bracket using a gear connection, and the second is fixed in the bracket with the possibility rotation provided by the bushing. The torsion bar consists of 4 blocks of plates, while the arrangement of the torsion bar plates of the contacting blocks is perpendicular to each other, and the shape of the torsion bar in cross-section forms a square. The utility model allows you to increase the torsion bar torsion angle. 2 ill.

Description

The utility model relates to the field of mechanical engineering, in particular to mechanisms for opening and closing a container lid, having a lid balancing device, and can be used in military equipment, for example, in container-type demining installations for lifting and lowering the lid.

Plate torsion bars are widely known from the prior art and are used in various fields of technology. For example, from the author's certificate No. 652387 (published on March 15, 1979, IPC F16F 1/14) a plate torsion bar is known, containing a package of plates and the ends of the clip covering them with fixing elements, characterized in that in order to increase energy intensity and durability by eliminating stress concentration in places where the ends of the plates are sealed, the cages are made with dovetail-shaped grooves in contact with the wide sides of the plates.

A device is known for opening and closing the cover of the entrance step of a car (patent RU 84805, published on July 20, 2009, IPC B61D 23/02), including a tubular shaft of the cover with driving elements fixed on it, rigidly connected to the cover of the step, a fixed support and a hinged support , fixed to the car profile, torsion bar, torsion bar twisting elements, driven element pivotally connected to the swing drive support. A device characterized by the fact that a torsion bar, represented by a package of plates, is passed through a tubular shaft transverse to the driven element and secured with its end part in a blind rectangular hole of a fixed support with a cylindrical protrusion; the transverse shaft with its end part is placed on a cylindrical protrusion, centering the torsion bar inside the shaft with its rectangular hole ; the opposite end of the torsion bar is rigidly connected to the tubular shaft through a rectangular hole of the seal, connected by means of protrusions to the grooves of the sleeve, fixed by means of radial elements of mutual fixation in the connecting sleeve, rigidly fixed to the shaft and mounted rotatably in the hinge support of the profile.

A hatch cover is also known (patent RU 2208538, published on July 20, 2003, IPC V63V 19/04), adopted as the closest analogue, containing a coaming installed in the main body of the vehicle, a cover, the body of which is connected to a balancing device having an axis, mounted in supports on said main body with the possibility of rotation, and a torsion bar placed inside the axis and made in the form of a set of plates, the ends of which are connected respectively to the axis and one of the supports, characterized in that the set of torsion bar plates is made of a material with mechanical shape memory on pseudo-elasticity and pre-twisted at an angle exceeding a given one, ensuring complete opening of the lid, while the number of torsion bar plates and their dimensions are selected from the condition of ensuring the generation of the return voltage necessary to restore their shape.

The disadvantage of the above-mentioned solutions known from the prior art is the complexity of the design and the small angle of twist of the torsion bar.

The objective of the proposed utility model is to eliminate the shortcomings of the prior art.

The technical result of the utility model is to increase the angle of twist of the torsion bar.

The solution to the problem of the utility model and the given technical result are provided by a mechanism for lifting the container lid, which contains right and left brackets fixed to the container body, a plate torsion bar, a torsion bar tube, which is part of the container lid, and torsion bar cups with the ends of the torsion bar installed in them and placed at one end in brackets, and the other end into the torsion bar tube, wherein one torsion bar cup contains a groove filled with rollers to ensure its rotation in the torsion bar tube, and the second cup contains a pin for transmitting torque from the torsion bar to the container cover, while one torsion bar cup is rigidly fixed in the bracket with using a gear connection, and the second is fixed in the bracket with the possibility of rotation provided by the sleeve. The torsion bar consists of 4 blocks of plates, while the arrangement of the torsion bar plates of the contacting blocks is perpendicular to each other, and the cross-sectional shape of the torsion bar forms a square. The torsion bar is tightened with crackers equipped with anti-friction linings.

Given the limited width of the container and the need to ensure a large lifting angle of the lid, a plate (sheet) torsion bar (a torsion bar consisting of a stack of plates) was used in the design of the container lid lifting mechanism.

It is known that, with the same lengths, a sheet torsion bar has greater flexibility than a torsion bar made from a round rod. To calculate such torsion bars, there is a developed methodology, which shows that the optimal shape for a sheet torsion bar is the thickness of the plate package, which gives a square cross-section.

In the process of developing an effective torsion bar mechanism, a “chessboard” layout of the plates in the torsion bar was proposed, in which the torsion bar consists of 4 blocks of plates, and the arrangement of the torsion bar plates of the contacting blocks is perpendicular to each other.

Since there is currently no method for calculating the torsion bar force for such a scheme, it was decided to evaluate the characteristics of the proposed type of torsion bar experimentally at the development stage.

Calculations and tests were carried out using various methods of arranging torsion bar plates, which showed that a torsion bar with a “checkerboard” arrangement of plates is more plastic than torsion bars with a cassette arrangement of plates, which made it possible to increase the torsion bar torsion angle.

The proposed mechanism for lifting the container lid is located in the right and left brackets, which in turn are bolted to the container body. The torsion bar includes a package of plates tightened with breadcrumbs, which at their ends are placed (fixed) in the torsion bar cups. The torsion bar glasses are placed with one end in the torsion bar tube, and the other end in the brackets. The torsion bar tube is rigidly welded to the container lid and, in fact, is part of it. The torsion bar cup located in one of the brackets contains a pin that transmits torque from the torsion bar to the container lid. The second cup of the torsion bar contains a groove filled with rollers to ensure its rotation in the bracket. The torsion bar package consists of four blocks of plates and is tightened with crackers, which are equipped with anti-friction linings. The arrangement of the torsion bar plates of the contacting blocks is perpendicular to each other, while the cross-sectional shape of the torsion bar forms a square.

The utility model is illustrated by drawings.

In fig. Figure 1 shows a general diagram of the torsion mechanism. In fig. Figure 2 shows a “chessboard” layout of the plates in the torsion bar.

In the drawings the positions are indicated:

1 - package of torsion bar plates;

2 - right and left brackets;

3 - torsion bar glass;

4 - groove filled with rollers;

5 - torsion bar crackers, equipped with anti-friction linings.

6 - finger;

7 - torsion bar plates.

Claims (2)

1. A mechanism for lifting a container lid, containing right and left brackets fixed to the container body, a plate torsion bar, a torsion bar tube that is part of the container lid, and torsion bar cups with the ends of the torsion bar installed in them and placed with one end in the brackets and the other end in the torsion bar tube , wherein one torsion bar cup contains a groove filled with rollers to ensure its rotation in the torsion bar tube, and the second cup contains a pin for transmitting torque from the torsion bar to the container cover, while one torsion bar cup is rigidly fixed in the bracket using a gear connection, and the second is fixed in a bracket with the possibility of rotation provided by a sleeve, characterized in that the torsion bar consists of 4 blocks of plates, while the arrangement of the torsion bar plates of the contacting blocks is perpendicular to each other, and the shape of the torsion bar in cross-section forms a square. 2. The mechanism for lifting the container lid according to claim 1, characterized in that the torsion bar is tightened with crackers equipped with anti-friction linings.