CN210090245U - Cement setting time measuring probe linear displacement precision measuring device - Google Patents

Abstract

The utility model belongs to the technical field of cement setting time measurement, in particular to a cement setting time measuring probe linear displacement precision measurement device, which comprises a bracket, wherein a motor is fixedly connected on the bracket, a lead screw is fixedly connected on an output shaft of the motor, the surface of the lead screw is in threaded connection with a displacement platform, and a scale is arranged on the displacement platform; the utility model discloses, realize the full automatic measure of survey probe linear displacement through step motor with accurate lead screw, the problem of purchasing displacement sensor and survey probe hard joint has been avoided, the free falling body motion of probe is not influenced, the device is through setting up embedded ARM chip control step motor, accurate lead screw, linear displacement measurement is accomplished to position detection device and survey probe, it is big to have overcome the manual operation work volume in the measurement of the dimension card appearance, reading error scheduling problem, the measurement process is full automatic, need not artifical the participation, whole device is rational in infrastructure, and easy operation, therefore, the clothes hanger is strong in practicability.

Description

Cement setting time measuring probe linear displacement precision measuring device

Technical Field

The utility model belongs to the technical field of the cement setting time survey, concretely relates to cement setting time measuring probe straight line displacement precision measurement device.

Background

The physical and chemical properties of cement directly affect the strength and durability of buildings and relate to life safety and national property safety, so that the detection of cement performance indexes is of particular significance, wherein the setting time of the cement is one of important parameters of the cement performance, the purpose of measuring the setting time of the cement is to determine whether the setting time of the cement is in a specified range, the national adopted standard is GB/T1346-2011 'detection method for cement standard consistency water consumption, setting time stability and stability', the method is mainly characterized in that a test needle is inserted into cement slurry in a free-fall state, the test needle is in an initial setting state when the test needle is 4 +/-1 mm away from the bottom surface of a sample, and the test needle is in a final setting state when the test needle sinks into the test body and is less than 0.5 mm; so the setting time measurement mainly is measuring the probe linear displacement, the commonly used cement setting time measurement adopts a Vicat instrument, is a test instrument for completely manual reading, is widely used at present, the testing mode of the instrument is that a testing needle is manually released once every a period of time, the data of a scale is manually read, the sinking depth of each time is recorded, according to the national standard, the initial setting time and the final setting time of the cement are finally obtained, the cement setting time is a daily routine measurement project of cement factories and central laboratories, the number of test samples is large, testers completely depend on manual operation, uninterrupted observation and timing are needed, time and labor are wasted, if the coagulation time of the test piece is too long, day and night tests are often needed, and a manual measurement method is adopted, so that a plurality of uncertain factors exist in the measurement process, the objectivity of the measurement result is influenced, and the uncertain factors comprise: detecting the difference of the operating proficiency of the operators; differences in the environmental conditions are measured each time; because the interference of personal factors or external factors of testers can not be measured according to the time specified by the test, and the uncertain factors can directly cause the deviation of the measurement result, the patent CN201620201196.5 mentions a multi-group sample cement setting time automatic detection device, the displacement sensor purchased by the design patent is not provided with a linear displacement measurement device, the patent CN201720269504.2 mentions a cement setting time automatic detection device, the purchased displacement sensor is not provided with a linear displacement measurement device.

Disadvantages of the vicat method:

1. in the measuring process of 600 minutes, the whole process of the test staff is needed, and the cost of human resources is high;

2. the initial setting time is measured once every 5 minutes, the final setting time is measured once every 15 minutes, a laboratory technician needs to continuously take out a sample from a maintenance box for measurement, and the sample is placed into the maintenance box for switching among actions such as maintenance and the like, so that the labor intensity is high, the laboratory technician needs to clamp the time for measurement, and a large measurement error is caused when the sample is out of date;

3. the reading is finished by the judgment of the eyesight of the laboratory technician, the measurement result is influenced by human factors,

4. only one sample measurement can be made at a time.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a cement setting time measuring probe linear displacement precision measurement device has the characteristics of measuring full automatization, good reliability and measurement accuracy height.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a cement setting time measuring probe straight line displacement precision measurement device, includes the support, fixedly connected with motor on the support, fixedly connected with lead screw on the output shaft of motor, the surperficial threaded connection of lead screw has the displacement platform, the displacement bench is provided with the scale, the side fixedly connected with adsorption equipment of displacement platform, adsorption equipment's below is provided with measuring probe, the last protection device that is provided with of measuring probe, be provided with position detection device on the support.

Preferably, the adsorption device can be an air claw, an electric claw, an electromagnet and a vacuum chuck.

Preferably, the motor is a stepping motor.

Preferably, the number of the position detection devices is two.

Preferably, the top end of the measuring probe is fixedly connected with a sliding rod, a sliding sleeve penetrates through the surface of the sliding rod, and the sliding sleeve is fixedly connected to the side face of the support.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses, realize the full automatic measure of survey probe linear displacement through step motor with accurate lead screw, the problem of purchasing displacement sensor and survey probe hard joint has been avoided, do not influence the motion of probe free fall, through setting up protection device, the instrument reliability strengthens greatly, the linear displacement measuring device who comprises motor with accurate lead screw, measurement accuracy is high, the device is through setting up embedded ARM chip control step motor, accurate lead screw, position detecting device and survey probe accomplish linear displacement and measure, it is big to have overcome the manual operation work volume among the dimension card appearance is measured, reading error scheduling problem, the measurement process is full automatic, need not artifical the participation, whole device is rational in infrastructure, and is simple in operation, therefore, the clothes hanger is strong in practicability.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of a front view section of the present invention;

in the figure: 1. a support; 2. a motor; 3. a screw rod; 4. a scale; 5. a displacement table; 6. an adsorption device; 7. a measurement probe; 8. a protection device; 9. a position detection device.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1, the present invention provides the following technical solutions: a cement setting time measuring probe linear displacement precision measuring device comprises a support 1, wherein a motor 2 is fixedly connected to the support 1, the motor 2 is a stepping motor, the motor 2 can drive a screw rod 3 to rotate when working, and further drive a displacement table 5 to move up and down through the rotation of the screw rod 3, the linear displacement measuring device consisting of the motor 2 and a precise screw rod 3 is high in measuring precision, the screw rod 3 is fixedly connected to an output shaft of the motor 2, the surface of the screw rod 3 is in threaded connection with the displacement table 5, a scale 4 is arranged on the displacement table 5, an adsorption device 6 is fixedly connected to the side surface of the displacement table 5, the adsorption device 6 can adsorb and release a measuring probe 7 to realize measurement, the adsorption device 6 can be an air claw, an electric claw, an electromagnet and a vacuum chuck, the measuring probe 7 is arranged below the adsorption device 6, the utility model discloses a displacement measuring device, including support 1, measuring probe 7, the top fixedly connected with slide bar of slide bar, the sliding sleeve is worn to be equipped with on the surface of slide bar, sliding sleeve fixed connection is in the side of support 1, be provided with protection device 8 on measuring probe 7, can protect measuring probe 7 through protection device 8, and then strengthen the reliability and the accuracy of instrument greatly, be provided with position detection device 9 on the support 1, position detection device 9's quantity is two, and the device accomplishes linear displacement through setting up embedded ARM chip control step motor 2, accurate lead screw 3, position detection device 9 and measuring probe 7 and measures, has overcome that the manual operation work volume is big in the measurement of dimension card appearance, reading error scheduling problem, and the measuring process is complete automation, need not artifical the participation, and whole device is rational in infrastructure, easy operation.

The utility model discloses a theory of operation and use flow: the utility model discloses, when measuring, the computer publishes the order, ARM chip control displacement platform 5 removes, measuring probe 7 moves down, when reacing the settlement position, as step motor 2 count terminal point, 6 release measuring probe 7 free fall of adsorption equipment, sink into the cement thick liquid, stop in 30 seconds, step motor 2 finds out current measuring probe 7 position as step motor 2 count starting point through position detection device 9 and protection device 8 down, control accurate lead screw 3 and drive measuring probe 7 back-ward movement, when reaching the assigned position, position detection device 9 gives and reachs status signal, the starting point through calculation motor 2 is to the linear displacement that the terminal point number of pulses just can accurate measuring probe 7.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The utility model provides a cement setting time measuring probe linear displacement precision measurement device, includes support (1), its characterized in that: fixedly connected with motor (2) on support (1), fixedly connected with lead screw (3) on the output shaft of motor (2), the surperficial threaded connection of lead screw (3) has displacement platform (5), be provided with scale (4) on displacement platform (5), the side fixedly connected with adsorption equipment (6) of displacement platform (5), the below of adsorption equipment (6) is provided with measuring probe (7), be provided with protection device (8) on measuring probe (7), be provided with position detection device (9) on support (1).

2. The cement setting time measuring probe linear displacement precision measuring device according to claim 1, characterized in that: the adsorption device (6) can be a gas claw, an electric claw, an electromagnet and a vacuum chuck.

3. The cement setting time measuring probe linear displacement precision measuring device according to claim 1, characterized in that: the motor (2) is a stepping motor.

4. The cement setting time measuring probe linear displacement precision measuring device according to claim 1, characterized in that: the number of the position detection devices (9) is two.

5. The cement setting time measuring probe linear displacement precision measuring device according to claim 1, characterized in that: the top end of the measuring probe (7) is fixedly connected with a sliding rod, a sliding sleeve penetrates through the surface of the sliding rod, and the sliding sleeve is fixedly connected to the side face of the support (1).

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