RU28774U1 - Test machine - Google Patents

Description

The utility model relates to the field of studying the strength properties of solid materials by applying mechanical forces to them, and more particularly, to hydraulic machines for testing metal samples in tension, compression, tension-compression.

Hydraulic testing machines are known, containing a power frame, a power hydraulic cylinder, a pumping unit, a pneumohydroaccutter / pump, clamps for samples having a hydraulic drive, a control and measurement system. For example, Universal Machine Щ-бОббМ-бОО.З (SKEIM, Russia), X62.776.03C / I /. The power frame of this machine consists of a base, two columns and a traverse mounted on the columns. The change in the height of the working space is due to the fact that the lower parts of the columns are made POLAND and, together with the rods fixed on the base, are lifting hydraulic cylinders. Fixation of columns in the required position is carried out by means of -ang hydraulic clamps installed on the base.

The disadvantages of this design are:

- the complexity of the technological process for the manufacture of columns and collet hydraulic clamps;

-the possibility of deviation from parallelism of the axes of the columns in a common plane or their bias;

RO-cylinders and hydraulic clamps without complete dismantling of the machine.

The URS-5 / bOOO testing machine (SNVIM, Russia), X62.776.007 / 2 / and the 810.16 series machine (ShZ, USA) / 3 /, in which changing the height of the working space is more simple and reliable, are taken as a close analogue. The traverse is lifted by hydraulic cylinders installed outside the power frame on the brackets. On the torii of the traverse there are grooves parallel to the axes of the holes for the columns and dissecting the body of the traverse from the end to the holes. The cut parts of the traverse have a bolted connection. The terminal clamp of the yoke on the columns comes into contact.

The main disadvantage of a close analogue is the manual tightening of the bolted connection with a dynamometer or with a special wrench included in the machine accessories. If you take into account the large number of screeds (the machine of the 810.16 series has 18 pieces), then the fixed traverses are a laborious and lengthy process.

The purpose of the claimed utility model is to eliminate this drawback and increase the reliability of the machine.

This goal is achieved by the fact that the fixing of the traverse on the columns is carried out using hydraulic clamps.

The design of the proposed utility model is illustrated in the figure.

The testing machine includes a power frame, a pumping unit, a control and measurement system, and other units described below. -3 the ability to move around the columns. A passive specimen clamp is attached to the traverse. An active clip for the images is mounted on the stem of the hydraulic cylinder fixed to the base of the power frame. The traverse is moved along the columns with the help of hydroINLINders installed between the base and the traverse.

The traverse has a through groove and from bargaining to the hole / for the passage of columns. Perpendicular to the groove plane in the traverse, holes are made through which the piston 2 of the hydraulic clamp passes. The piston moves in the hydraulic clamp housing 3 mounted on the beam through the guide sleeve 4. On the other side of the beam, the piston is pressed against the beam with nut 5. The piston is centered by means of spherical washers b and 7.

The supply of working fluid from the pumping unit to the hydraulic ignition is carried out by command of the control system through the high pressure sleeve 8, into the cavity.

The work of the testing machine is as follows.

The pumping unit is turned on;

- with the help of the master cylinder for moving the beam, the required height of the working space is set;

- in the clamps for samples with a hydraulic actuator, samples for testing are inserted and fixed;

- using a switchgear (not shown in FIG.) along the sleeve 8, a working fluid is supplied under high pressure to the hydraulic clamp cavity. There is a relative movement of the housing 3 and the piston 2 of the hydraulic clamp. The cut parts of the traverse I converge,

-4 reliably fixing the traverse I on the columns from slipping under the action of the force developed by the hydraulic cylinder for moving the active clamp of the samples.

After the cavity is connected to the drain, the pressure in the hydraulic clamp drops and due to the elastic deformation of the beam I, decomposition occurs.

All processes are controlled by a control and measurement system.

The advantages of the proposed utility model are;

- low manufacturing complexity;

-reliability of fixing the beam on the columns without misalignment of their axes;

-availability during repair;

-replacement of manual labor when tightening bolted joints;

- lack of need for special devices;

-fastness of fixing and unlocking.

RUPOUR SOURCES:

1. Universal machine Ж-6065М-5СО.З X62.776.030 (SKSh1, Russia)

2. Machine URS 5/6000 (SKBIM, Russia), design documentation X62.776.007

3.Machine series 810.16 (catalog of the company MT5, USA)

Authors: Zveearabenko V.P.

Claims (1)

A testing machine containing a power frame with a traverse moving along the columns, a pump installation, a control and measurement system, clamps for samples, a hydraulic cylinder for moving an active clamp for samples, hydraulic cylinders for moving the beam, characterized in that the beam is fixed on the columns using hydraulic clamps.