RU2579411C1 - Spring loading device - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: device contains guide (1), fixed from longitudinal movement on bearing structure. Support elements are made in the form of upper and lower sleeves (3, 4), between which there are movable upper and lower sleeves (5, 6) and spring (7). Upper and lower bushes are turned at 90° relative to each other and have two symmetrical axis and one perpendicular to axes of the longitudinal groove. Longitudinal slots are made in the guide. Rod with lengthwise groove and two pins is installed with possibility of longitudinal movement. In the cups there is a row of blind holes uniformly located in circumferential direction, in which springs are installed.

EFFECT: adjustable stroke and rigidity, movement and creating force in two directions.

1 cl, 6 dwg

Description

The invention relates to mechanical engineering and can be used as a compact spring compression device having the required ratio of the stroke and load.

In engineering, spiral springs, wound from wire, most often of circular cross section, are most widely used. Often, to achieve the required stroke and force, not one spring is used, but several springs are placed concentrically or parallel to the same dimensions. A concentric multi-spring system has greater flexibility and load capacity compared to a single spring with the same stroke and radial dimensions. A feature of the parallel multi-spring system is increased load capacity with increased rigidity. In addition, multi-spring systems of this kind provide a more uniform application of the load along the periphery of the loaded parts (see Orlov PI, Fundamentals of Design: Reference and Methodological Manual. In 2 pr. Book. 2. Edited by PN Uchaev . - 3rd ed., Revised. - M.: Mechanical Engineering, 1988, p. 505-508).

The closest set of essential features is the technical solution according to the patent of the Russian Federation No. 2378544, F16F 3/04, 2008, which was adopted by the authors for the closest analogue.

This technical solution is a spring device that contains a rod fixed from longitudinal movement in the supporting structure, a stopper, a movable tip, a support element, a compression spring. The stopper is mounted on the free end of the stem. The movable tip and the support element are made in the form of bushings. Between the bushings introduced movable glasses, turned to each other by the bottoms. A movable clip was inserted between the glasses. The springs are made in the form of two groups, each of which consists of two springs of different diameters. One end of the springs of smaller diameter is worn on the bushings, and the other is inserted into the glasses. One end of the springs of larger diameter is worn on the glasses, and the other is inserted into the holder. When compressing the springs, it is possible for the glasses to enter the holder, and the bushings for the corresponding glasses.

The disadvantages of this device include the fact that it makes it possible to create the movement of the rod and the load in only one direction, as well as the inability to control the generated force.

The aim of the proposed technical solution is to create a compact and rigid in the desired range of the loading device with the ability to adjust the stroke and stiffness, capable of creating movement and force in two directions.

This goal is achieved by the fact that the spring loading device contains a guide fixed from longitudinal movement on the supporting structure, and is equipped with supporting elements, which are made in the form of upper and lower bushings, between which are movable upper and lower cups, and springs. The upper and lower bushings are rotated 90 ° relative to each other and contain two symmetrically located axes and one blind longitudinal groove perpendicular to the axes. In the guide there are made longitudinal grooves perpendicular to each other, which include axes for fixing the sleeve against rotation, and a hole along its axis, in which a rod with a longitudinal groove and two pins is mounted with the possibility of longitudinal movement. One pin is located in the grooves of the lower part of the rod, the guide and the lower sleeve, and the other is rigidly fixed in the central part of the rod perpendicular to the first pin and is located in the grooves of the guide and the upper sleeve. Each glass has a series of blind holes evenly spaced around which the springs are installed, while the longitudinal grooves of the guide and the rod have a length not less than the stroke length of the rod.

In FIG. 1-6 presents the design of the invention. The composition of the spring loading device:

1 - guide;

2 - supporting structure;

3 - upper sleeve;

4 - lower sleeve;

5 - the upper glass;

6 - lower glass;

7 - spring;

8 - axis;

9 - groove;

10 - groove;

11 - groove;

12 - stock;

13 - pin;

14 - pin.

The device operates as follows. The displacement of the rod down 12 through the pin 14, the upper sleeve 3 and the upper cup 5 deforms the springs 7. In this case, the lower cup 6 abuts the lower bushing 4, fixed relative to the guide 1 in one direction with the help of the axes 8. Thus, there is a force from the side of the springs 7, preventing the displacement of the rod 12. Similarly, when the rod 12 is displaced upward, the lower sleeve 4 and the lower glass 6 are displaced, while the upper glass 5 abuts the upper sleeve 3, which is fixed against movement in the same direction as the rod 12 by the axes 8. Accordingly springs 7 deforms ruyutsya and create a force that prevents displacement of the rod 12 upwards.

It is possible to adjust the required force and stroke of the device by changing the number of springs 7 and changing the degree of their preload by introducing additional bushings between the upper 5 and lower 6 cups and the corresponding upper 3 and lower 4 bushings.

The proposed technical solution allows you to create a compact and rigid in the required range of the loading device with the ability to adjust the stroke and stiffness, capable of creating movement and force in two directions.

Claims (1)

A spring loading device comprising a guide secured from longitudinal movement on a supporting structure and provided with support elements which are made in the form of upper and lower bushings, between which movable upper and lower cups are located, and springs, characterized in that the upper and lower bushings are deployed 90 ° relative to each other and contain two symmetrically located axes and one blind perpendicular longitudinal groove perpendicular to the axes, and in the guide are perpendicular to longitudinal grooves laid to each other, which include axes for fixing the sleeve against rotation, and a hole along its axis, in which a rod with a longitudinal groove and two pins is mounted with the possibility of longitudinal movement, one pin is located in the grooves of the lower part of the rod, the guide and the lower bushings, and the other is rigidly fixed in the central part of the rod perpendicular to the first pin and is located in the grooves of the guide and the upper sleeve, in each glass there are a number of blind holes evenly spaced around which Lena spring, wherein the longitudinal grooves of the guide rod and having a length not less than the stroke length.

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