CN211904925U

CN211904925U - Creep testing machine

Info

Publication number: CN211904925U
Application number: CN202020052008.3U
Authority: CN
Inventors: 李超; 王鹏; 卫大朋; 高飞; 李茂金; 李振
Original assignee: Jinan Sanyue Testing Instrument Co ltd
Current assignee: Jinan Sanyue Testing Instrument Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-11-10
Anticipated expiration: 2030-01-10

Abstract

The utility model discloses a creep testing machine, the on-line screen storage device comprises a base, be fixed with four stands on the base, install down formula hydro-cylinder on the base, the piston rod of down formula hydro-cylinder is fixed with high accuracy load cell, be connected with transition connection spare on the high accuracy load cell, the upper end of four stands is fixed with the crossbeam jointly. The utility model discloses a cooperation between underlying formula hydro-cylinder and the energy storage ware has reached the purpose that can long-time realization pressurize, guarantees the accuracy of test data, guarantees the quality of product, and the local adopts hydro-cylinder underlying formula overall arrangement simultaneously, and stable in structure is reliable, and the atress frame focus is low to be equipped with the pay-off dolly, guarantee that the pay-off position is accurate.

Description

Creep testing machine

Technical Field

The utility model relates to an instrument and meter technical field especially relates to a creep testing machine.

Background

Creep is the deformation of an object that increases with time under the action of a load, and has little relationship with the magnitude of the load. Creep is generally referred to as creep of concrete. Shrinkage and creep of concrete are inherent characteristics of concrete materials and are an important content of concrete structure design calculation.

The shock insulation technology has been applied in China for many years, most shock insulation buildings use a lead core rubber bearing (LRB) with a damping function as a shock insulation device, and the LRB rubber bearing has the widest application range. The creep testing machine is developed to detect the creep performance of the rubber shock-insulation support.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough that can not accurately know the test data of error appears in present creep test machine testing performance data, and the creep testing machine who provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a creep testing machine comprises a base, wherein four upright posts are fixed on the base, a lower oil cylinder is installed on the base, a high-precision load sensor is fixed at the tail end of a piston rod of the lower oil cylinder, a transition connecting piece is connected to the high-precision load sensor, and cross beams are fixed at the upper ends of the four upright posts together;

the base table surface is provided with two guide rails, the guide rails are provided with a feeding trolley, four corners of the lower end of the feeding trolley are provided with idler wheels, the two idler wheels on the same side are positioned in one guide rail, and the feeding trolley is provided with a limiting device.

Preferably, the limiting device comprises a stop block fixed on the guide rails, a guide seat is fixed on the stop block through a transition connecting piece, a screw rod is sleeved on the guide seat in a threaded manner, a connecting plate is jointly connected between the two guide rails, a guide block is arranged on the connecting plate, a U-shaped through hole is formed in the guide block, the lower end of the screw rod extends into the corresponding U-shaped through hole, and an upper limiting switch and a lower limiting switch are connected to one side of the guide block.

Preferably, the transition connecting piece and the feeding trolley are positioned through two pins

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a cooperation between underlying formula hydro-cylinder and the energy storage ware has reached the purpose that can long-time realization pressurize, guarantees the accuracy of test data, guarantees the quality of product, and the local adopts hydro-cylinder underlying formula overall arrangement simultaneously, and stable in structure is reliable, and the atress frame focus is low to be equipped with the pay-off dolly, guarantee that the pay-off position is accurate.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a side view of the present invention;

fig. 3 is a top view of the present invention.

In the figure: the device comprises a base 1, a feeding trolley 2, an underlying oil cylinder 3, a limiting device 4, a cross beam 5 and an upright post 6.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the invention.

Referring to fig. 1-3, a creep testing machine comprises a base 1, wherein four upright posts 6 are fixed on the base 1, a lower oil cylinder 3 is installed on the base 1, a high-precision load sensor is fixed at the tail end of a piston rod of the lower oil cylinder 3, a transition connecting piece is connected onto the high-precision load sensor, a cross beam 5 is jointly fixed at the upper ends of the four upright posts 6, the lower oil cylinder 3 pushes the transition connecting piece to lift, the oil cylinder is arranged below, the structure is stable and reliable, and the gravity center of a stress frame is low;

referring to fig. 1-2, two guide rails are arranged on a base working table surface, a feeding trolley 2 is arranged on the guide rails, the feeding position is accurate, rollers are arranged at four corners of the lower end of the feeding trolley 2, the two rollers on the same side are positioned in one guide rail, a limiting device is arranged on the feeding trolley 2, the whole device mainly comprises a host system, an oil source system, a strong electric system and a software control system, a servo motor is matched with an energy accumulator, the energy accumulator is started simultaneously when pressure is maintained for a long time, when required pressure is reached, a servo motor oil pump is turned off, oil is continuously supplied to an oil cylinder by the energy accumulator, when the pressure maintaining range is close to a set value, the oil pump is restarted, oil is supplied to the oil cylinder and the energy accumulator until a.

Referring to fig. 1-2, the limiting device comprises a stop block fixed on the guide rails, the stop block is used for limiting the feeding trolley, a guide seat is fixed on the stop block through a transition connecting piece, a screw rod is sleeved on the guide seat in a threaded manner, a connecting plate is connected between the two guide rails, a guide block is arranged on the connecting plate, a U-shaped through hole is formed in the guide block, the lower end of the screw rod extends into the corresponding U-shaped through hole, an upper limit switch and a lower limit switch of an oil cylinder are connected to the side face of the guide block, the transition connecting piece and the feeding trolley are positioned through two pins, so that the feeding trolley 2 is fixed, the pins fix the feeding trolley 2, the accuracy of the position of the feeding trolley.

In the utility model, during the test, the energy accumulator is started, the energy accumulator is connected with the lower oil cylinder 3, then the sample is placed in the feeding trolley 2, at the moment, the movement of the feeding trolley 2 is promoted, when the feeding trolley 2 moves to a proper position, because the stop block fixed on the guide rail is used for limiting the feeding trolley, the screw rod on the guide seat is rotated, because the connecting plate is connected between the two guide rails, the guide block is arranged on the connecting plate, the U-shaped through hole is arranged on the guide block, when the screw rod rotates, the lower end of the screw rod can be extended into the corresponding U-shaped through hole to ensure that the oil cylinder does not rotate, the transition connecting piece and the feeding trolley are positioned through two pins, thereby the feeding trolley 2 is fixed, then the lower oil cylinder 3 promotes the transition connecting piece to lift, the transition connecting piece drives the feeding trolley 2 to lift, the feeding trolley 2 drives, when the position is proper, the lower oil cylinder 3 stops oil supply, when the required pressure is reached, the servo motor oil pump is turned off, the oil is continuously supplied to the oil cylinder by the energy accumulator, when the pressure maintaining range is close to the set value, the oil pump is restarted, the oil is supplied to the oil cylinder and the energy accumulator until the set pressure value is reached, and the process is repeated, so that the long-time pressure maintaining function can be realized.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A creep testing machine comprises a base (1), and is characterized in that: four upright posts (6) are fixed on the base (1), a lower oil cylinder (3) is installed on the base (1), a high-precision load sensor is fixed on a piston rod of the lower oil cylinder (3), a transition connecting piece is connected to the high-precision load sensor, and a cross beam (5) is fixed at the upper ends of the four upright posts (6) together;

the base is characterized in that two guide rails are arranged on the working table surface of the base, a feeding trolley (2) is arranged on the guide rails, rollers are arranged at four corners of the lower end of the feeding trolley (2), the two rollers on the same side are located in one guide rail, and a limiting device is arranged on the feeding trolley (2).

2. The creep testing machine of claim 1, wherein the limiting device comprises a stopper fixed on the guide rail, a guide seat is fixed on the stopper through a transition connector, a screw is sleeved on the guide seat in a threaded manner, a connecting plate is connected between the two guide rails together, a guide block is arranged on the connecting plate, a U-shaped through hole is arranged on the guide block, the lower end of the screw extends into the corresponding U-shaped through hole, and an upper limiting switch and a lower limiting switch are connected to one side of the guide block.

3. A creep testing machine according to claim 2, characterized in that the transition piece and the feeding trolley (2) are positioned by two pins.