RU185718U1 - Test bench for building structures - Google Patents

Abstract

The utility model relates to test benches and can be used for testing beam, articulated-rod and other building structures. The stand contains hydraulic pulling cylinders and vertical rods, additionally contains an oil station, which includes a pressure switch and a directional valve with electromagnetic control, and the pulling hydraulic cylinders are connected to each other and the oil station by high pressure hoses, and the rods consist of rolled metal. Effect: increase the accuracy of measurements of tests of building structures. 2 ill.

Description

The utility model relates to test benches and can be used for testing beam and articulated-rod metal structures.

Known equipment for testing beam building structures using fixed in the power floor supports to accommodate the test sample, a loading device with a power device. Loading is performed using at least one lever, and the power device is provided in the form of a cargo tank, which is placed on each lever with the possibility of filling it with liquid (see patent RU 2530470 C2, G01N 3/20, publ. 10.10.2014 Bull. No. 28)

However, this device is relatively expensive and less technologically advanced, since the levers and suspensions used are large, which negatively affects the testing of articulated rod structures, where the step of applying loads can be less than a meter with more than five, and the use of this test bench outside the laboratory is difficult .

The closest analogue is a test bench using traverses, a hydraulic jack and loading platforms that are multi-tiered and interconnected (see SU No. 688844, class G01M 5/00, publ. 30.09.79 g, Bull. No. 36).

However, in this stand for fixing loads when using freight platforms, it is necessary to weigh, mark and fasten them together, so that one platform corresponds to one step of applying the load, and the use of this stand in off-laboratory conditions is difficult.

The objective of the claimed utility model is to increase the accuracy of measurements.

The essence of the utility model lies in the fact that the test bench of building structures, including hydraulic pulling cylinders and vertical rods, additionally contains a power station, which includes a pressure switch and a directional control valve with electromagnetic control, and the pulling hydraulic cylinders are connected to each other and the power station by high pressure hoses, and traction consists of metal.

EFFECT: increased accuracy of measurements is achieved due to the fact that the test bench uses traction, hydraulic pulling cylinders and pressure switches as part of the oil station to maintain values, which allows testing to be carried out and record the results to one person, in addition, it becomes possible to use the stand on existing structures out of laboratory conditions.

The invention is illustrated by drawings, where:

FIG. 1 - general view of the test bench

FIG. 2 - oil station

The test bench of building structures 1, is fixed to the concrete slab through anchors 4, on which hydraulic pulling cylinder systems 2 are connected by high pressure hoses 5, and transfers the load to the building structure using vertical rods 3 made of metal cables, oil station 6 which includes and a pressure switch 8, and an electromagnetic control valve 7.

The work of the test bench is that under the test structure is a system of hydraulic pulling cylinders 2 connected by high pressure hoses 5 to each other and the oil station 6, the system of hydraulic pulling cylinders 2 are fixed to the base 4 and using vertical rods 3, while the rods 3 are made of metal, the force is transferred to the structure, when moving which the pressure in the hydraulic pulling cylinders 2 decreases, these changes are controlled by pressure switch 8 and transmits a signal to the hydraulic the electromagnetic control valve 7, which are part of the oil station 6, the electromagnetic control valve 7 transfers the oil station 6 from the idle position to the working one, after which the pressure in the system of hydraulic pulling cylinders 2 rises to a predetermined level, thereby maintaining the load on the building under test design 1, the magnitude and step of the load is determined by the test plan, after reaching the limit state of the building structure 1, large displacements occur ranks, hydraulic pulling cylinders system 2 operates in the inner abutment of the working oil tank 6 passes the position to the idle position, after which the test ends of the building structure 1.

The test bench is used for beam, articulated rod and other types of building structures and is intended for static and cyclic tests of metal structures in order to study the stress-strain state.

Thus, the inventive test bench simplifies the work associated with testing of building structures and generally reduces labor costs and the cost of testing, and also allows testing on existing structures.

The proposed device can be manufactured under industrial conditions, workshops of large and medium-sized factories using standard equipment manufactured by domestic and foreign industry.

Claims (1)

A test bench for building structures, including hydraulic pulling cylinders and vertical rods, characterized in that it additionally contains an oil station, which includes a pressure switch and a directional valve with electromagnetic control, and the pulling hydraulic cylinders are connected to each other and the oil station by high pressure hoses, and the rods consist of metal rolling.

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