CN206756638U - Concrete injection resistance meter - Google Patents

Abstract

A concrete penetration resistance meter, with a support frame on the base, a rubber hammer on the support frame, a stirring paddle on the support frame, a mortar chamber at the bottom of the measuring barrel, and a screen between the measuring barrel and the mortar chamber Net and baffle, the lower end of the mortar chamber is fixed on the spring seat, the base is also equipped with an electro-hydraulic servo instrument, the electro-hydraulic servo instrument is equipped with a lifting frame, the lifting frame is equipped with a support arm, and a measuring needle is provided on the support arm. A resistance sensor is arranged on the probe, and the resistance sensor is connected to the central processing unit through wires, the central processing unit is located in the electric control box, and a display screen is arranged on the surface of the electric control box. The mortar is filtered through the screen, the concrete is vibrated by the spring seat, and the rubber hammer can make it more dense. The above operations are automatically completed through the mechanical structure without human assistance. The mechanical automatic detection of concrete condensation is realized, and the concrete is fully automatic through the central processor. Penetration, automatic measurement of resistance, automatic time recording, reduce unnecessary troubles and improve the accuracy of concrete setting time determination.

Description

Concrete Penetration Resistance Tester

technical field

The utility model belongs to the technical field of measuring instruments, in particular to a concrete penetration resistance instrument.

Background technique

In concrete engineering, the setting time of concrete mixtures is generally determined according to the penetration resistance method specified in GB1T50080-2002 "Standards for Performance Test Methods 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.OMPa, 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

The utility model provides a concrete penetration resistance meter to solve the problems raised in the above-mentioned background technology.

The technical problems solved by the utility model are realized by the following technical solutions: the utility model provides a concrete penetration resistance meter, which includes a base, the base is provided with a support frame, and the support frame is provided with a shaft sleeve , the shaft sleeve is provided with a rotating arm, the lower end of the rotating arm is connected to the rubber hammer head through the suspension wire, the upper part of the support frame is connected to the horizontal frame through the rotating shaft, and the lower end of the horizontal frame is provided with a hydraulic lifting frame. The bottom end of the hydraulic lifting frame is connected to the stirring paddle, the stirring paddle is located in the measuring bucket, the bottom of the measuring bucket is provided with a mortar chamber, and a screen and a baffle are provided between the measuring bucket and the mortar chamber, The baffle is located under the screen, the lower end of the mortar chamber is fixed on the spring seat, the spring seat is located on the base, and the base is also provided with an electro-hydraulic servo instrument, and the electro-hydraulic servo The instrument is provided with a lifting frame, the lifting frame is provided with a support arm, the support arm is provided with a measuring needle, the measuring needle is provided with a resistance sensor, and the resistance sensor is connected to the central processing unit through a wire. The central processing unit is located in the electric control box, the electric control box is located on the electro-hydraulic servo, and the surface of the electric control box is provided with a display screen.

The baffle is a plug-in structure.

The lifting frame moves relative to the electro-hydraulic servo through the slideway.

The measuring barrel is provided with a suction pipe, and the other end of the suction pipe is connected to the mortar chamber. The suction pipe is provided with an electric pump, and the electric pump is connected to the supporting frame through a fixing frame.

The beneficial effects of the utility model are as follows: the mortar is filtered through the screen, the spring seat vibrates the concrete, and the rubber hammer head can make it more dense. The above operations are all automatically completed through the mechanical structure without human assistance, and the mechanical automatic detection of concrete condensation is realized. The central processing unit realizes the automatic penetration of concrete, the automatic measurement of resistance, and the automatic recording of time, shortening the observation time of test personnel, reducing unnecessary troubles and improving the accuracy of concrete setting time determination.

Description of drawings

Fig. 1 is a structural representation of the utility model.

detailed description:

The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate this embodiment, certain components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art It is understandable that some well-known structures and descriptions thereof may be omitted in the drawings.

Referring to the accompanying drawings, a concrete penetration resistance meter includes a base 13, a support frame 20 is provided on the base 13, a shaft sleeve 23 is provided on the support frame 20, and a shaft sleeve 23 is provided on the shaft sleeve 23. Rotating arm 22, the lower end of the rotating arm 22 is connected to the rubber hammer head 21 through a suspension wire, the upper part of the support frame 20 is connected to the horizontal frame 2 through the rotating shaft 1, and the lower end of the horizontal frame 2 is provided with a hydraulic lifting frame 7. The bottom end of the hydraulic lifting frame 7 is connected to the stirring paddle 4, the stirring paddle 4 is located in the measuring bucket 10, the bottom of the measuring bucket 10 is provided with a mortar cavity 14, and a There is a screen 11 and a baffle 15, the baffle 15 is located below the screen 11, the lower end of the mortar chamber 14 is fixed on the spring seat 16, the spring seat 16 is located on the base 13, the base 13 is also provided with an electro-hydraulic servo instrument 12, the electro-hydraulic servo instrument 12 is provided with a lift frame 7, the lift frame 7 is provided with a support arm 6, and the support arm 6 is provided with a probe , the probe is provided with a resistance sensor 5, the resistance sensor 5 is connected to the central processing unit through a wire, the central processing unit is located in the electric control box 8, and the electric control box 8 is located in the electro-hydraulic servo On the instrument 12, the surface of the electric control box 8 is provided with a display screen.

The baffle plate 15 is a plug-in structure.

The lifting frame 7 moves relative to the electro-hydraulic servo 12 through the slideway.

The measuring barrel 10 is provided with a suction pipe 17, and the other end of the suction pipe 17 is connected to the mortar chamber 14, and the suction pipe 17 is provided with an electric pump 18, and the electric pump 18 is connected to the support frame 20 through the fixing frame 19. .

The specific implementation process is as follows: 1. Get a representative sample of the concrete mixture, pour it into the measuring bucket 10, open the baffle 15, sieve the mortar through the screen 11, close the baffle 15 after filtering the mortar, and when the concrete slump is not greater than 70mm It is appropriate to use the spring seat 16 to vibrate the mortar, and the concrete is stirred evenly by the stirring paddle 4 when it is larger than 70mm. After stirring, the stirring paddle 4 can be raised by the hydraulic telescopic frame 3, and then the rubber hammer head is driven to lightly tap and measure by the rotating arm 22 back and forth. Barrel 10 walls make it compact.

2. Stand in an environment with the same temperature as the site as much as possible, pass the motor and absorb the bleeding on the surface 5 minutes before each test, and the bleeding enters the mortar chamber 14.

3. First make the end face of the probe 9 contact the mortar surface, insert the probe 9 vertically and evenly into the sample within 10±2S, the depth is 25±2mm, and record at this time through the resistance sensor 5 and the central processing unit; The net distance between the measuring points is twice the diameter of the probe 9 and not less than 15mm, and the distance between the probe 9 and the edge of the inner wall of the measuring barrel 10 should not be less than 25mm, and the average value of multiple measurements is sufficient.

The utility model filters the mortar through the screen 11, the spring seat 16 vibrates the concrete, and the rubber hammer head 21 can make the concrete more dense. The processor realizes automatic penetration of concrete, automatic resistance measurement, automatic time recording, shortens the observation time of test personnel, reduces unnecessary troubles and improves the accuracy of concrete setting time determination.

In the figure, the description of the positional relationship is only for illustrative purposes, and cannot be understood as a limitation to the patent; obviously, the above-mentioned embodiments of the utility model are only examples for clearly illustrating the utility model, rather than the limitation of the utility model. Limitations on Embodiments. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (4)

1. a kind of concrete injection resistance meter, including base, it is characterised in that：Described base is provided with support frame, described Support frame is provided with axle sleeve, and described axle sleeve is provided with turning arm, and described turning arm lower end connects rubber tup by messenger wire, Described support frame top connects crossbearer by rotating shaft, and described crossbearer lower end is provided with hydraulic lifting frame, described hydraulic lifting Frame bottom connects agitating paddle, and for described agitating paddle in measurement bucket, described measurement bottom of the barrel is provided with mortar chamber, described survey Screen cloth and baffle plate are provided between measuring tank and mortar chamber, described baffle plate is located at below screen cloth, and described mortar chamber lower end is fixed on On spring base, described spring base is located on base, and electro-hydraulic servo instrument, described electro-hydraulic servo instrument are additionally provided with described base Crane is provided with, described crane is provided with support arm, and described support arm is provided with chaining pin, and described chaining pin is provided with resistance Sensor, described resistive force sensor connect central processing unit by wire, and described central processing unit is located in electric cabinet, institute The electric cabinet stated is located on electro-hydraulic servo instrument, and described electric cabinet surface is provided with display screen.

A kind of 2. concrete injection resistance meter according to claim 1, it is characterised in that：Described baffle plate is draw and insert-type knot Structure.

A kind of 3. concrete injection resistance meter according to claim 1, it is characterised in that：Described crane passes through slideway With electro-hydraulic servo instrument relative motion.

A kind of 4. concrete injection resistance meter according to claim 1, it is characterised in that：It is provided with and inhales in described measurement bucket Pipe, described suction pipe other end connection mortar chamber, the suction pipe told are provided with electric pump, and described electric pump connects branch by fixed mount Support.