CN205593868U - Full -automatic penetration resistance appearance of concrete - Google Patents

Abstract

The utility model discloses a full -automatic penetration resistance appearance of concrete, be provided with rotary platform on the frame, rotary platform is last to install 3 test buckets, still install the servo appearance of electric liquid on the frame, set up the slide on the servo appearance of electricity liquid, the crane is installed on the slide, the crane is through drive along the slide vertical up -and -down movement of the servo appearance of electric liquid, install displacement sensor on the crane, the mid -mounting of crane has the support, the tapered disk is installed on the support, the lower part of tapered disk is installed and is hindered force transducer, hinder the tip that force transducer connects rotatory chaining pin, rotary platform, the servo appearance of electricity liquid, displacement sensor, tapered disk and hinder force transducer and connect computer terminal processor, realize the automatic injection of rotatory chaining pin through computer terminal processor, shorten the time of testing personnel's observation, the unnecessary trouble and improvement concrete condense time is shortened the accuracy nature of survey.

Description

A fully automatic penetration resistance meter for concrete

technical field

The utility model relates to the technical field of concrete performance testing instruments, in particular to a fully automatic concrete penetration resistance instrument.

Background technique

The setting time of concrete is an extremely important parameter of concrete. Whether it is in scientific research or in engineering practice, it is extremely common to measure the setting time of concrete. It is generally believed that the initial setting time of concrete is the time when it loses plasticity but does not have mechanical strength, and the final setting time is the time when concrete loses plasticity and has mechanical strength. The initial setting time and final setting time of concrete are very important for concrete construction.

In concrete engineering, the setting time of concrete mixtures is generally determined according to the penetration resistance method specified in GB/T50080-2002 "Standards for Test Methods of Performance of Ordinary Concrete Mixtures". The setting time is measured from the moment the cement comes into contact with water. According to the performance of the concrete mixture, determine the test time of the probe, and then test it every 0.5h, and increase the number of measurements when it is close to the initial and final setting.

During the test, put the mortar sample cylinder on the penetration resistance meter, and the end of the measuring needle is in contact with the surface of the mortar. Then, within 10±2s, the measuring needle is evenly penetrated into the mortar to a depth of 25±2mm, and the penetration pressure is recorded. The setting time is determined by computer graphics fitting method. When the penetration resistance is 3.5MPa, it is the initial setting time, and when the penetration resistance is 28.0MPa, it is the final setting time.

At present, most of the instruments used to measure the setting time of concrete in the industry are manual concrete penetration resistance meters. Using this instrument to test the concrete setting time has the following problems: 1) Due to the differences in the ability and proficiency of the test personnel, the accuracy of the test results is affected to a certain extent; 2) In the actual test process, the test personnel need to test the samples for a long time It is time-consuming and labor-intensive to use the instrument for observation, and this disadvantage is especially obvious when the number of samples to be tested is large.

Utility model content

According to the deficiencies of the prior art, the utility model provides a fully automatic concrete penetration resistance meter, which will greatly shorten the observation time of the test personnel and reduce unnecessary troubles, which is extremely important for improving work efficiency It is beneficial and can guarantee the accuracy of test results at the same time.

The technical scheme of the present utility model: a fully automatic concrete penetration resistance meter, which is characterized in that it includes a machine base, a rotating platform is arranged on the machine base, three test barrels are installed on the rotating platform, and an electro-hydraulic tester is also installed on the machine base. Servo instrument, the electro-hydraulic servo instrument is equipped with a slideway, and the lifting frame is installed on the slideway. The lifting frame is driven by the electro-hydraulic servo instrument to move vertically up and down along the slideway. A displacement sensor is installed on the lifting frame, and a bracket is installed in the middle of the lifting frame. , the conical disc is installed on the bracket, the lower part of the conical disc is equipped with a resistance sensor, the resistance sensor is connected to the end of the rotating stylus, the displacement sensor is used to measure the depth of the rotating stylus penetrating into the test barrel, and the resistance sensor is used To measure the resistance of the rotating stylus penetrating into the test barrel, the rotating platform, electro-hydraulic servo, displacement sensor, conical disk and resistance sensor are connected to the microcomputer terminal processor.

The machine base is also provided with a maintenance box body, a box door is opened on the maintenance box body, and an insulation layer is installed in the maintenance box body.

The rotating stylus includes 100mm ² stylus, 50mm ² stylus, 20mm ² stylus, 100mm ² stylus, 50mm ² stylus, 20mm ² stylus are installed at equal intervals below the resistance sensor and distributed in an umbrella shape.

The distance between the three test barrels and the outer edge of the rotating platform is the same, and the three test barrels are distributed in an equilateral triangle on the rotating platform.

The electro-hydraulic servo instrument is arranged on the side of the rotating platform, and the test bucket rotates with the rotating platform to be directly under the conical disk.

The technical effect of the utility model: through the computer terminal processor, the concrete can be fully automatic penetration, the resistance can be measured automatically, the time can be recorded automatically, the observation time of the test personnel can be shortened, unnecessary troubles can be reduced, and the accuracy of concrete setting time can be improved. The concrete full-automatic penetration resistance meter of the utility model is strictly in accordance with relevant national test specifications, can simulate the whole process of manual operation, can greatly reduce the workload of test personnel, and has reliable and accurate test data.

Description of drawings

Fig. 1 is the structural schematic diagram of the penetration resistance meter of the present utility model;

Fig. 2 is a schematic diagram of the installation and connection structure of the conical disc;

Fig. 3 is a schematic diagram of the structure of the maintenance box of the penetration resistance meter of the present invention.

In the figure: 1—machine base, 2—rotating platform, 3—test barrel, 4—electro-hydraulic servo instrument, 5—slide, 6—lifting frame, 7—displacement sensor, 8—conical disc, 9—rotation Stylus, 10-support, 11-resistance sensor, 12-curing box, 13-door, 91-100mm ² stylus, 92-50mm ² stylus, 93-20mm ² stylus.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figures 1 to 3, a fully automatic concrete penetration resistance meter is characterized in that it includes a machine base 1, a rotating platform 2 is arranged on the machine base 1, and three test barrels 3 are installed on the rotating platform 2. An electro-hydraulic servo instrument 4 is also installed on the seat 1, a slideway 5 is arranged on the electro-hydraulic servo instrument 4, and a lifting frame 6 is installed on the slideway 5, and the lifting frame 6 is vertically up and down along the slideway 5 driven by the electro-hydraulic servo instrument 4 Movement, a displacement sensor 7 is installed on the lifting frame 6, a bracket 10 is installed in the middle of the lifting frame 6, a conical disk 8 is installed on the bracket 10, a resistance sensor 11 is installed on the lower part of the conical disk 8, and the resistance sensor 11 is connected Rotate the end of the stylus 9, the displacement sensor 7 is used to measure the depth of the rotary stylus 9 penetrating into the test bucket 3, the resistance sensor 11 is used to measure the resistance of the rotary stylus 9 penetrating into the test bucket 3, the rotating platform 2, The electro-hydraulic servo instrument 4, the displacement sensor 7, the conical disc 8 and the resistance sensor 11 are connected to the microcomputer terminal processor.

The machine base 1 is also provided with a maintenance box body 12, and the maintenance box body 12 is provided with a box door 13, and an insulation layer is installed in the maintenance box body 12.

The rotating stylus 9 includes 100mm ² stylus 91, 50mm ² stylus 92, 20mm ² stylus 93, 100mm ² stylus 91, 50mm ² stylus 92, 20mm ² stylus 93 equidistantly installed on the resistance sensor 11 Below and in an umbrella-like distribution.

The three test buckets 3 are at the same distance from the outer edges of the rotating platform 2, and the three testing buckets 3 are distributed on the rotating platform 2 in an equilateral triangle shape.

The electro-hydraulic servo instrument 4 is arranged on the side of the rotating platform 2 , and the test barrel 3 rotates with the rotating platform 2 to directly below the conical disk 8 .

Place the test bucket 3 containing the concrete to be tested on the rotating platform 2 . The microcomputer terminal processor controls the electro-hydraulic servo instrument 4 to drive the lifting frame 6 to move up and down and the conical disc 8 to rotate;

The displacement sensor 7 can measure the penetration depth of the rotary probe 9 into the mortar. When the penetration depth of the mortar is 25±2mm, it is used as the end point of a test process, and the lifting frame 6 and the rotary probe 9 return to their original positions automatically;

After a test process is over, the microcomputer terminal processor can control the rotation time and angle of the rotating platform 2, and continue to test the next test bucket 3;

By controlling the rotation angle of the conical disc 8, the test of different points of the same test barrel 3 is realized. When the compressive strength of a certain test point reaches 3.5MPa and 20Mpa, the rotating stylus 9 realizes automatic needle change;

The microcomputer terminal processor automatically records the test time, corresponding stress and ambient temperature, and the coagulation time is determined through drawing fitting.

The concrete full-automatic penetration resistance meter of the utility model is strictly in accordance with relevant national test specifications, can simulate the whole process of manual operation, can greatly reduce the workload of test personnel, and has reliable and accurate test data.

Claims (5)

1. A fully automatic penetration resistance meter for concrete, characterized in that: it comprises a support (1), the support (1) is provided with a rotating platform (2), and 3 test barrels (3) are installed on the rotating platform (2). ), the base (1) is also equipped with an electro-hydraulic servo (4), the electro-hydraulic servo (4) is provided with a slideway (5), the lifting frame (6) is installed on the slideway (5), and the lifting frame (6) Driven by the electro-hydraulic servo instrument (4), it moves vertically up and down along the slideway (5), a displacement sensor (7) is installed on the lifting frame (6), and a bracket (10) is installed in the middle of the lifting frame (6). , the conical disc (8) is installed on the support (10), the lower part of the conical disc (8) is equipped with a resistance sensor (11), the resistance sensor (11) is connected to the end of the rotating probe (9), and the displacement The sensor (7) is used to measure the penetration depth of the rotating stylus (9) into the test barrel (3), and the resistance sensor (11) is used to measure the resistance of the rotating stylus (9) penetrating into the test barrel (3). The platform (2), the electro-hydraulic servo (4), the displacement sensor (7), the conical disk (8) and the resistance sensor (11) are connected to the microcomputer terminal processor. 2. A fully automatic concrete penetration resistance meter according to claim 1, characterized in that: the base (1) is also provided with a curing box (12), and the curing box (12) is provided with Chamber door (13), insulation layer is installed in the maintenance casing (12). 3. A fully automatic concrete penetration resistance meter according to claim 1, characterized in that: the rotating stylus (9) includes a 100mm ² stylus (91), a 50mm ² stylus (92), a 20mm ² stylus ^The stylus (93), 100mm stylus (91), 50mm stylus (92), 20mm stylus (93 ⁾ are installed under the resistance sensor ( ¹¹ ) at equal intervals and distributed in an umbrella shape. 4. A fully automatic concrete penetration resistance meter according to claim 1, characterized in that: the three test buckets (3) are at the same distance from the outer edges of the rotating platform (2), and the three test buckets (3) They are distributed in an equilateral triangle on the rotating platform (2). 5. A fully automatic concrete penetration resistance meter according to claim 4, characterized in that: the electro-hydraulic servo meter (4) is set on the side of the rotating platform (2), and the test barrel (3) rotates with it The platform (2) rotates to just below the conical disc (8).