CN219608628U - Intelligent concrete age strength measuring device based on capsule type sensor - Google Patents

Abstract

The utility model discloses an intelligent concrete age strength measuring device based on a capsule sensor, which comprises a variable capsule with a capillary, wherein the variable capsule is embedded in a beam-entering plate member before concrete is not poured; the oil delivery pipe of the hydraulic oil tank is connected with the tail end of the variable capsule with the capillary tube; the piston cylinder is fixedly connected with the hydraulic oil tank, and an oil outlet pipe of the hydraulic oil tank is communicated with an inner cavity of the piston cylinder; a piston rod embedded in the piston cylinder, wherein the variable capsule with the capillary tube generates confining pressure during concrete pouring, and the piston rod is moved away from the hydraulic oil tank through the hydraulic oil tank; and the tension and pressure sensor is arranged between the tail end of the piston rod and the lead screw at the output end of the stepping motor. The utility model can embed the variable capsule with capillary into the concrete, which is not affected by carbonization depth, and has accurate and convenient measurement, and can predict the concrete strength, without adding extra manpower measurement, and the measured concrete strength is close to the true value.

Description

Intelligent concrete age strength measuring device based on capsule type sensor

Technical Field

The utility model relates to the technical field of constructional engineering, in particular to an intelligent concrete age strength measuring device based on a capsule sensor.

Background

Because the age strength of the on-site construction concrete member generally increases along with time, the template can be removed only when the strength reaches a certain value, and the next procedure is carried out, the construction measures of the number of maintenance days and the same condition test block matched with the on-site rebound value are generally adopted at present to assist in judging whether the form removing condition is met, and the method for directly measuring and analyzing the concrete member is lacking. On one hand, due to the space position of the concrete member, the size effect of the member and the on-site concrete pouring and vibrating method, the test block and the concrete member have certain difference, and the on-site rebound value is influenced by the thickness of the protective layer, the rebound position, the operation method, the carbonization depth and other factors, the accuracy and the reliability of the traditional concrete strength measurement have room for improvement, and the hidden danger is brought to the engineering construction quality and the safe burying.

Meanwhile, due to the adoption of the management measures matched with the same-condition test blocks and the rebound, on-site construction managers need to manufacture, maintain, sweep codes and detect a large number of same-condition test blocks, and on-site rebound detection is carried out, especially, the measurement of the strength of beam slab concrete is very inconvenient, the cost of the manager is increased, the energy and time of the on-site manager are occupied, and a large number of waste concrete test blocks are generated, so that the environment protection is not facilitated.

Disclosure of Invention

In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to provide the intelligent measuring device for the concrete age strength based on the capsule type sensor, the variable capsule with the capillary tube can be buried in the concrete, the variable capsule is not influenced by carbonization depth, the measurement is accurate and convenient, and the concrete strength can be predicted.

In order to achieve the above purpose, the utility model provides an intelligent concrete age strength measuring device based on a capsule sensor, comprising: the variable capsules with the capillaries are pre-buried in the beam-entering plate member before concrete is not poured; the oil delivery pipe of the hydraulic oil tank is connected with the tail end of the variable capsule with the capillary tube; the piston cylinder is fixedly connected with the hydraulic oil tank, and an oil outlet pipe of the hydraulic oil tank is communicated with an inner cavity of the piston cylinder; a piston rod embedded in the piston cylinder, wherein the variable capsule with the capillary tube generates confining pressure during concrete pouring, and the piston rod is moved away from the hydraulic oil tank through the hydraulic oil tank; and the tension and pressure sensor is arranged between the tail end of the piston rod and the lead screw at the output end of the stepping motor.

Preferably, a fixed iron bar is welded at the tail end of the piston rod, a screw is welded on the fixed iron bar, and one end of the tension pressure sensor is in threaded connection with the screw.

Further, an iron plate is welded at one end of the piston cylinder far away from the hydraulic oil tank, the linear displacement sensor is fixed on the fixed iron bar, and the tail end of a measuring rod of the linear displacement sensor is fixed on the iron plate.

Preferably, the wires of the linear displacement sensor and the tension pressure sensor are connected to the signal input end of the PLC, and the PLC is electrically connected with the PLC panel.

Further, the switch output end of the PLC is connected with the coil contact of the contactor to control the on-off of the contactor; and a power line of the stepping motor is connected with a normally open contact of the contactor.

According to the pressure balance principle, the concrete in the initial pouring stage generates confining pressure to the variable capsule with the capillary, the pressure is transmitted to a dynamic force balancer consisting of the piston rod, the stepping motor, the linear displacement sensor and the tension pressure sensor through the capillary, and the confining pressure to the variable capsule in the concrete hardening process can be converted into a concrete strength value according to a test block under the same condition, so that a calculation equation and a model are established for intelligent prediction of the concrete strength.

Compared with the prior art, the intelligent concrete age strength measuring device based on the capsule sensor has the following beneficial effects:

1. the sensor is used for measuring the strength of the concrete in the age, the position of the real environment is measured, and the concrete is more fit for the actual field.

2. The capsule type sensor is convenient to install, can analyze the strength change of concrete in the age in real time, and saves labor cost and time and energy.

3. The capsule-type sensor has small influence on concrete members, is convenient to detach, and improves the pouring safety by effectively pouring on site concrete in a power-assisted engineering.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an intelligent concrete age strength measuring device based on a capsule sensor;

FIG. 2 is a view of the buried state of a variable capsule with capillary;

FIG. 3 is a schematic diagram of the connection of the linear displacement sensor of the present utility model;

FIG. 4 is a schematic diagram of a pull pressure sensor according to the present utility model;

fig. 5 is a logic block diagram of connection between the PLC device of the present utility model and each sensor, stepper motor.

In the figure: 1-concrete, 2-variable capsule with capillary, 3-hydraulic oil tank, 4-piston cylinder, 5-iron plate, 6-piston rod, 7-linear displacement sensor, 8-fixed iron bar, 9-tension pressure sensor, 10-stepper motor, 11-contactor, 12-PLC controller, 13-24V power supply, 14-PLC panel.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The intelligent measuring device for the concrete age strength based on the capsule type sensor is described in detail below with reference to fig. 1 to 5.

The utility model discloses an intelligent concrete age strength measuring device based on a capsule sensor, which mainly comprises a variable capsule 2 with a capillary tube, a hydraulic oil tank 3, a piston cylinder 4, a piston rod 6, a linear displacement sensor 7, a tension pressure sensor 9, a stepping motor 10, a PLC controller 12 and a PLC panel 14.

Wherein, the variable capsule 2 with capillary is pre-buried into the beam plate member before the concrete 1 is not poured, and gives a certain pressure to keep the relative balance under the pressure of the concrete 1. Because the concrete of the wall column component can be removed by the form after the casting is completed for 1-2 days, and the concrete of the beam plate component needs to be removed by the inner frame and the form after the equal strength reaches the standard, the beam plate component is pre-buried economically and scientifically. The end of the variable capsule 2 with the capillary tube is sleeved with an oil delivery pipe of the hydraulic oil tank 3 and is bonded and fixed by glue. One end of the piston cylinder 4 is connected with the hydraulic oil tank 3 through welding, an oil outlet pipe of the hydraulic oil tank 3 is communicated with an inner cavity of the piston cylinder 4, an iron plate 5 is welded at the other end of the hydraulic oil tank 3, a measuring rod of the linear displacement sensor 7 extends out of one half, and the tail end of the measuring rod is fixed on the iron plate 5. As shown in fig. 3, the piston rod 6 is embedded in the piston cylinder 4 so as to be flexibly slid back and forth. The capillary-equipped variable bladder 2 generates confining pressure during concrete placement, and the hydraulic oil tank 3 moves the piston rod 6 in a direction away from the hydraulic oil tank 3 (leftward movement).

As shown in fig. 3, a fixed iron bar 8 is welded to the end of the piston rod 6, and a linear displacement sensor 7 is fixed to the fixed iron bar 8 in the same direction as the direction of the piston rod 6 for measuring the displacement of the piston rod 6. One end of the tension pressure sensor 9 is connected with a screw thread, the screw is welded with the fixed iron bar 8, when the piston rod 6 moves leftwards, the tension pressure sensor 9 is given a pressure through the screw, and the pressure can be displayed on the PLC panel 14. The other end of the pull pressure sensor 9 is in threaded connection with a lead screw at the output end of the stepping motor 10 to measure the thrust of the stepping motor 10. The stepper motor 10 is provided with a working program through the PLC panel 14, and the advancing speed of the screw rod of the stepper motor 10 can be controlled.

The wires of the linear displacement sensor 7 and the pull pressure sensor 9 are connected to the signal input end of the PLC 12, the PLC 12 is electrically connected with the PLC panel 14, and the PLC panel 14 can monitor pressure and displacement. The switch output end of the PLC 12 is connected with the coil contact of the contactor 11 to control the on-off of the contactor 11. The power line of the stepper motor 10 is connected to the normally open contact of the contactor 11. The 24V power supply 13 supplies power to the PLC panel 14.

According to the pressure balance principle, the concrete generates confining pressure to the variable capsule 2 with the capillary tube in the initial pouring stage, the pressure is transmitted to the piston rod 6 through the variable capsule 2 with the capillary tube, the piston rod 6, the PLC 12, the stepping motor 10, the linear displacement sensor 7 and the dynamic force balancer formed by the tension pressure sensor 9, the confining pressure to the variable capsule in the concrete hardening process can be converted into a concrete strength value according to the test block under the same condition, a calculation equation and a model are further established for intelligent prediction of the concrete strength, and when the concrete 1 is completely hardened, the confining pressure is always kept at a constant value.

The model of each component used in the utility model is as follows:

linear displacement sensor 7, model: HLV-100, manufacturer: shenzhen Hongzhi technologies Co., ltd.

Pull pressure sensor 9, model: DYLY-01, manufacturer: the clam port ocean sensing systems engineering limited.

Contactor 11, model: LC1D32M7C, manufacturer: schneider electric limited.

PLC controller 12, model: HY-10MR;

PLC panel 14, model: samkoon (7 inches), manufacturer: dongguan Carpenter Automation Limited.

The following is a brief description of the method of use of the present utility model, with reference to fig. 1 to 5, in combination with the description of the structural features described above:

the variable capsule 2 with the capillary is pre-embedded into the beam-entering plate member before the concrete 1 is not poured, and sufficient pressure is given, the concrete 1 generates confining pressure on the variable capsule 2 with the capillary when being poured, and the pressure is transmitted to the piston rod 6 through the variable capsule 2 with the capillary. When the concrete is poured initially, the fluidity is larger, the variable capsule 2 with the capillary tube can be extruded, so that hydraulic oil in the variable capsule flows leftwards through an oil delivery pipe of the hydraulic oil tank 3, further, the piston rod 6 moves leftwards, the tension pressure sensor 9 can be given a pressure through a screw, and the pressure can be displayed on the PLC panel 14. A dynamic force balancer composed of a piston rod 6, a PLC 12, a stepping motor 10, a linear displacement sensor 7 and a tension pressure sensor 9. The confining pressure of the variable capsule 2 with the capillary tube is gradually reduced in the hardening process of the concrete 1, when the concrete 1 is completely hardened, the confining pressure is always kept at a constant value, at the moment, the stepping motor 10 works to enable the piston rod 6 to slowly push forwards, and when the force obtained by monitoring by the tension pressure sensor 9 is increased to a value which cannot be increased, the strength of the concrete 1 reaches a design value.

While the utility model has been described with respect to specific embodiments thereof, it will be appreciated that the utility model is not limited thereto, but is intended to cover modifications and alternatives falling within the spirit and scope of the utility model as defined by the appended claims.

Claims (5)

1. Intelligent concrete age intensity measuring device based on capsule type sensor, its characterized in that includes:

the variable capsules with the capillaries are pre-buried in the beam-entering plate member before concrete is not poured;

the oil delivery pipe of the hydraulic oil tank is connected with the tail end of the variable capsule with the capillary tube;

the piston cylinder is fixedly connected with the hydraulic oil tank, and an oil outlet pipe of the hydraulic oil tank is communicated with an inner cavity of the piston cylinder;

a piston rod embedded in the piston cylinder, wherein the variable capsule with the capillary tube generates confining pressure during concrete pouring, and the piston rod is moved away from the hydraulic oil tank through the hydraulic oil tank;

and the tension and pressure sensor is arranged between the tail end of the piston rod and the lead screw at the output end of the stepping motor.

2. The intelligent concrete age intensity measuring device based on the capsule sensor according to claim 1, wherein a fixed iron bar is welded at the tail end of the piston rod, a screw is welded on the fixed iron bar, and one end of the tension pressure sensor is in threaded connection with the screw.

3. The intelligent concrete age intensity measuring device based on the capsule type sensor according to claim 2, wherein an iron plate is welded at one end of the piston cylinder far away from the hydraulic oil tank, a linear displacement sensor is fixed on the fixed iron bar, and the tail end of a measuring rod of the linear displacement sensor is fixed on the iron plate.

4. The intelligent concrete age intensity measuring device based on the capsule type sensor according to claim 3, wherein the wires of the linear displacement sensor and the tension pressure sensor are connected to the signal input end of a PLC controller, and the PLC controller is electrically connected with a PLC panel.

5. The intelligent concrete age intensity measuring device based on the capsule sensor according to claim 4, wherein the switch output end of the PLC is connected with the coil contact of the contactor to control the on-off of the contactor; and a power line of the stepping motor is connected with a normally open contact of the contactor.