RU2649254C1 - Portable small-sized pneumatic jack - Google Patents

Abstract

FIELD: manufacturing technology.

SUBSTANCE: invention relates to mechanisms for lifting heavy loads. Pneumatic jack contains a working volume enclosed in a sealed high-strength elastic shell located inside a conical compression spring, capable of being fully compressed in the form of a spiral in one plane and equipped at the edges with generic bases with an elastic shell. Spring coils can have any desired cross-sectional shape and configuration. In the position of its greatest extension, the jack has the form of a truncated cone, in which, during compression, the shell surface is freely and evenly distributed outward between the spring coils. Rigid upper base has a groove for reliable contact with the vehicle body, and the lower one is equipped with a gliding-free surface.

EFFECT: weight and dimensions of the jack are reduced.

4 cl, 2 dwg

Description

The invention relates to the field of technology, where mechanisms are used to lift heavy loads to a small height for repair, in particular, is intended for use as a car jack.

Known for having various designs, hydraulic, pneumatic and mechanical jacks, which are equipped with vehicles (TS) used when replacing the wheel and inspecting the bottom of the vehicle, but they are all quite bulky.

The closest technical solution to the claimed small-sized pneumatic jack (MTD) is Selson's pneumatic jack (manufacturer Trommelberg), containing a working volume enclosed in rubber-cord pillows and having dimensions of about 0.7 m × 0.27 m × 0.19 m and weight 17 kg It is quite bulky and heavy.

The objective of the invention is to reduce the weight and dimensions of the pneumatic jack and to provide drivers, in particular disabled people and women MTD, convenient in operation due to the ability to work together with compressors designed to pump the wheels of the vehicle.

This problem is solved in the MTD, which contains a working volume (RO), enclosed in a sealed high-strength elastic shell (VEO), located inside a conical compression spring (KPS), capable of freely laying in the form of a spiral in one plane and equipped with common edges at full compression with VEO grounds. The turns of the KPS can have any desired cross-sectional shape and configuration, in particular the shape of a rectangle with rounded edges, which will reduce the thickness of the HEO wall. And also, in particular, of circular cross-section, which is convenient for manufacturing and square configuration for placement in storage during operation. The material, diameter, coil section, configuration and spring pitch are selected taking into account the optimal ratio of strength and durability with the material and thickness of the HEO. In the position of its greatest tension, the MTD looks like a truncated cone, in which, when compressed, the surface of the VEO is freely and evenly distributed outward between the turns of the KPS. The rigid upper base has a groove for reliable contact with the vehicle body, and the lower one is equipped with a non-slip surface.

KPS coils in the highest spring tension position can be embedded inside the VEO wall, forming a single common structure, and the inner part of the VEO wall can be reinforced with an elastic metal mesh, so that the mesh rests on the coils from inside the RO, allowing the maximum working pressure to be used in the RO agent.

To ensure the required stroke of the jack, the design may consist of several series-connected POs having a common base in a narrow or wide part of the KPS.

The lower base of the MTD has a valve similar to a valve installed on the tires of the wheels of the vehicle, to which at the time of its use a compressor is used, which serves to pump the working agent into the tire cavity to the required working pressure, and a device for its release at the end of the work.

For convenience during operation, the stiffness of the KPS and the pitch of the turns should allow, upon completion of work, to freely manually lay the spring together with the VEO in the same plane.

The MTD can consist of a conical telescopic compression spring (KTPS) with a rectangular section of coils, which is a device in which, with a high degree of purity of processing the side surfaces of the KTPS, a sealed working volume without VEO is created inside the structure, consisting only of KTPS and the bases attached to it. In this case, the extreme turns are made thicker, each is made in the form of closed rings, which are hermetically combined with the bases, and the pitch of the turns is taken so as to ensure the tightness of the working volume inside the resulting structure. The number of turns of KTPS and their step should provide the required working stroke of the jack, as well as have rigidity, allowing you to manually lay it in one plane. If necessary, the design is provided with grease. The jack with KTPS can work with any working agent.

The drawings show the MTD containing the turns of KPS 1, VEO 2, narrow base 3 and wide - 4, while in Fig. 1 - MTD, in which the RO is under the maximum possible working pressure, and in Fig. 2 - MTD in the most folded state. The valve and exhaust device are not shown in the figures and can be installed in any place convenient for the manufacturer and consumers.

MTD works as follows.

A compressor designed to inflate the tires of the vehicle is connected to the valve, and a working agent is supplied to the RO until the required stroke of the jack is reached. At the end of the required work, the working agent exits through the outlet device included in the work and the MTD takes the form shown in Fig. 2.

The KTPS device and its operation are similar to the device and operation of the MTD.

Claims (4)

1. A portable small-sized pneumatic jack containing a working volume filled with a working agent in order to obtain a working stroke of a certain size, characterized in that the working volume (PO) is enclosed in a structure in which a conical compression spring (KPS) and placed inside it, high-strength elastic the sheath (VEO), having common bases along its edges, together with full compression, can be freely laid in one plane in the form of a spiral, and the structure itself is equipped with a valve, as on vehicle tires (TS), and a mechanical Product zmom working agent of PO. 2. A portable small-sized pneumatic jack according to claim 1, characterized in that the KPS coils, in the highest tension position, can be embedded inside the VEO wall, forming a single common structure, and the inner part of the VEO wall can be reinforced with an elastic metal mesh so that it rests on turns from within the RO. 3. A portable small-sized pneumatic jack according to claim 1, characterized in that to ensure the required working stroke of the jack, the design can consist of several series-connected POs having a common base in a narrow or wide part of the KPS, the upper base of the jack having a groove for reliable contact with the body of the vehicle, and the bottom is equipped with a surface that excludes slipping. 4. A portable small-sized jack containing PO filled with a working agent in order to obtain a working stroke of a certain size, characterized in that the working volume is enclosed inside a sealed device containing a conical telescopic compression spring with a rectangular section of turns, the extreme turns of which are made thicker, each closed rings and hermetically combined with the bases, and their side surfaces have a high degree of purity of treatment, while the device is equipped with a valve, as on tires ( TS), and the release mechanism of the working agent from the RO, and the jack can work with any working agent.

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