CN111504156A - A linear dry shrinkage-moisture expansion detector for hard inorganic bulk materials - Google Patents

Abstract

The invention discloses a linear dry shrinkage-swelling detector for hard inorganic bulk materials, comprising a leveling foot, an instrument base, a reference platform, a standard rod placing block (including a support and positioning rod), and a detachable high-precision gasket , Digital display vernier ranging ruler starting position adjustment locator, digital display vernier ranging ruler, digital display vernier ranging ruler measurement end position adjustment locator 1, 2, digital display vernier ranging ruler reading display, digital display thousand points Gauge, standard measuring rod, and test piece drawing board; this device realizes the function collection of digital vernier caliper, specific length meter, standard length rod and dial indicator, and effectively realizes the fast, accurate and stable linear length of inorganic block materials. It solves the problems of free measurement of linear length of materials of different sizes and convenient adjustment of different test accuracy.

Description

A linear dry shrinkage-moisture expansion detector for hard inorganic bulk materials

technical field

The invention belongs to the technical field of testing equipment for concrete, inorganic thermal insulation boards and building partition wall slats, and in particular relates to a linear dry shrinkage-swelling detector for hard inorganic block materials.

Background technique

Concrete, inorganic insulation boards, and building partition slats are very common building materials, and the linear shrinkage-swelling rate is one of the important indicators to measure their quality. Most of the existing testing equipment belongs to the testing equipment of specific products and professional items. Due to the limitation of testing accuracy and specimen size, it cannot cover the testing of similar items of other materials. Due to various reasons such as price and market, its manufacturing status is relatively rough, which is not equivalent to the current high-precision laboratory construction.

At present, there are special equipments for the detection of the linear dimensional change rate of concrete and inorganic thermal insulation boards, such as concrete shrinkage dilatometers and specific length meters. Although they can meet the requirements of the measurement reading accuracy in the relevant test standards, there are many operating errors caused by the measurement process, and the floor space is large. For example, the outer micrometer with a measuring range of about 600mm needs a special support frame to help stabilize it due to its heavy weight, and the height of the measuring point changes during use, and it is very inconvenient to adjust the height of the measuring point. The tremor of the human hand introduces a large operation error.

The invention patent application with publication number CN107514960A discloses a concrete expansion and contraction test length measuring instrument and a measuring method. The invention can be applied to the precise length measurement of concrete specimens of different specifications by replacing the specimen fixture, and has strong applicability and can be used in Accurately measuring the lengths of concrete specimens of different specifications and different specifications on one instrument can ensure the standardization and unification of the length measurement tests of concrete specimens of different specifications, and ensure the consistency and accuracy of the measurement data; however, the invention cannot satisfy different requirements. Accuracy, the requirements of linear measurement of different materials, and the use of this method have a great influence on the operation error during high-precision measurement.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a linear dry shrinkage-swelling detector for hard inorganic bulk materials in view of the above-mentioned problems. The set of special functions of length rod and dial indicator can meet the requirements of linear measurement of test pieces of different sizes under the same test accuracy. At the same time, it solves the problem that the placement point of the test piece is relatively fixed during the secondary measurement, which makes the test more convenient and the result more accurate.

The technical scheme adopted in the present invention is as follows:

The invention discloses a linear dry shrinkage-swelling detector for hard inorganic bulk materials. The detector comprises an instrument base frame, a bottom of the instrument base frame is provided with leveling feet, the instrument base frame and the leveling feet, a reference The platform together constitutes the horizontal support surface of the detector; the leveling feet adjust the base frame of the instrument so that it is placed horizontally, it carries the whole machine and the test piece, has a solid structure and sufficient rigidity, and requires high processing precision; the reference platform needs a height Consistent, the surface is flat and smooth, the bottom surface of the standard rod placement block is well flat, placed in the groove of the reference platform, and the two contact surfaces fit well;

A standard measuring rod placing block is placed on the horizontal support surface, and the upper surface of the standard measuring rod placing block is recessed downward to form an equidistant standard measuring rod placing block fixing groove, and the standard measuring rod placing block fixing groove is used for Place the test piece to support the positioning rod or the standard measuring rod. The test piece is placed above the standard measuring rod placing block. The two ends of the test piece extend outward to form a pre-embedded measuring head of the test piece, which is supported by the lower surface of the test piece and the test piece. The positioning rod or the standard measuring rod are in contact; by setting the test piece on the standard rod placing block to support the positioning rod, and at the same time drawing equidistant markings on the lower surface of the test piece, the same test piece can be moved and placed multiple times to ensure that the test piece is consistent with the original position. The measurement positions are as identical as possible;

Further, the upper end of the detector is provided with a digital display vernier ranging ruler, and the starting point of the digital display vernier ranging ruler is set with a digital display vernier ranging ruler starting measurement position adjustment locator, and the locator is clamped down to accept the test piece; The end point of the distance ruler is provided with a digital display vernier rangefinder end position adjustment locator 1; the digital display vernier rangefinder start measurement position adjustment locator at one end of the instrument base frame is connected with a detachable high-precision gasket by screws; One end of the pre-embedded measuring head is connected to a removable high-precision gasket, and the other end is connected to the end position adjustment locator 2 of the digital vernier distance measuring ruler;

Place the standard rod placing block in the fixing groove of the standard rod placing block. The detachable high-precision gasket and its groove are the center line of the instrument to ensure that the linear measuring point of the test piece is relatively fixed. If the measuring point is in the middle of the concave surface of the test piece If the test piece is in the middle of the convex surface, the removable high-precision gasket can be retained or removed according to the test process;

The digital display vernier distance measuring ruler and the digital display vernier distance measuring ruler end position adjustment locator 1 form a bracket to connect the digital display vernier distance measuring ruler reading display, and the digital display vernier distance measuring ruler end position adjustment locator 1 and the digital display The vernier rangefinder end position adjustment locator 2 forms a bracket to connect the digital dial indicator; with the use of a standard measuring rod, by setting the dial indicator on the digital vernier rangefinder measurement end position adjustment locator, the measurement accuracy can be directly transformed , to achieve different measurement accuracy requirements;

If it is necessary to measure at any middle position of the instrument, in order to ensure that the measurement position of the measurement specimen remains unchanged for the second time, it is necessary to draw a support mark on the lower surface of the specimen with the specimen drawing board according to the length of the specimen. The lower surface of the test piece is pre-drawn with two equidistant marking lines with the support and positioning rod, which can make the test piece place relatively fixed during the secondary measurement and make the test result more accurate;

Further, place the test piece support and positioning rod according to the marking line, and place the test piece on the support and positioning rod;

When the measurement accuracy is 0.01mm, the test piece can be placed on the test piece support rod, and the digital vernier range finder can be adjusted to measure the end position. Fit, set the digital vernier rangefinder reading display to zero, and then pull it apart for measurement;

When the measurement accuracy is 0.001mm, the high-precision spacer can be installed or removed at the starting end according to the measurement needs, and the standard pole is placed on the standard pole placing block. Dial indicator, adjust the height of the locator to match the measurement point, and then move the digital vernier range finder to make the digital vernier range finder measure the end position. Set the meter to zero, remove the standard measuring rod and replace it with the test piece support rod to start measuring the test piece, and add the measured value to the standard measuring rod value to obtain the length value of the test piece; in this way, the digital display can be realized. Linear measurement with different accuracy requirements for any size object within the scale range of the ruler.

The technical effect of the present invention is as follows:

The invention discloses a linear dry shrinkage-swelling detector for hard inorganic bulk materials, which is suitable for the detection of concrete, inorganic thermal insulation boards and building partition wall slats. The requirement of linear measurement saves laboratory site resources and the maintenance cost of multiple scattered equipment; the use of the vernier principle eliminates the operation error caused by the jitter caused by the operator manually supporting the measurement tool, which has a great impact on high-precision measurement. big. The device realizes the function collection of digital vernier caliper, specific length meter, standard length rod and dial indicator, and effectively realizes the fast, accurate and stable measurement of the linear length of inorganic bulk materials.

Description of drawings

Figure 1 is the elevation view of the 1:0.01mm precision measurement detector;

1- Leveling feet, 2- Instrument base frame, 3- Reference platform, 4- Standard rod placement block, 5- Removable high-precision spacers, 6- Test piece, 7- Digital vernier rangefinder, 8- Starting position adjustment locator, 9-digital vernier distance measuring end position adjustment locator 1, 10-digital vernier distance ruler reading display, 13-test piece support rod, 16-under-tested piece embedded measuring head ;

Figure 2 is the elevation view of the 1:0.001mm precision measurement detector;

4- Standard rod placement block, 6- Test piece, 11- Digital vernier rangefinder measuring end position adjustment locator 2, 12- Digital dial indicator, 13- Test piece support rod;

Figure 3 is a plan view of the detector;

7-Digital display vernier ranging ruler, 10-Digital display vernier ranging ruler reading display, 14-Standard measuring rod placing block fixing groove;

Figure 4 is a schematic structural diagram of a standard rod placement block (including a support positioning rod);

4-Standard rod placement block, 15-Standard measuring rod;

Fig. 5 is a schematic diagram of the combined structure of a digital display vernier rangefinder measuring end position adjustment locator, a digital display vernier rangefinder reading display, and a digital display dial indicator;

9-Digital display vernier distance measuring end position adjustment locator 1; 10-Digital display vernier distance ruler reading display; 11-Digital display vernier distance measuring end position adjustment locator 2; 12-Digital display dial indicator .

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

In this embodiment, the data used are preferred solutions, but are not used to limit the present invention;

As shown in Figures 1-5, this embodiment provides a linear dry shrinkage-swelling detector for hard inorganic bulk materials, the detector includes a leveling foot, an instrument base, a reference platform, a standard rod placing block, Removable high-precision gasket, test piece, test piece pre-embedded measuring head, digital vernier distance measuring ruler, starting position adjustment locator, digital vernier distance measuring end position adjustment locator 1 and 2, digital Display vernier rangefinder reading display, digital dial indicator, test piece support rod, standard measuring rod placing block fixing slot, standard measuring rod, the structure is made of stainless steel;

Example 1

As shown in Figure 1, the accuracy measurement of the initial size of the partition wall slats is 0.01mm;

First, place the test piece on the test piece support rod; adjust the digital display vernier range finder according to the lowest position of the test piece in the same group. The height of the measuring point of the test piece is required; at the same time, the locator is attached to the two measuring surfaces, and then the digital vernier rangefinder reading display is set to zero to measure, and the measurement result with an accuracy of 0.01mm is obtained;

Example 2

As shown in Figure 2, the precision dimension measurement of 0.001mm after drying and shrinking of the partition wall slats;

Install or remove the high-precision gasket at the starting end according to the measurement needs. If the measurement point is in the middle of the concave surface of the test piece, the removable high-precision gasket needs to be installed first; if the test piece is in the middle of the convex surface, the removable high-precision gasket The strip can be retained or removed according to the test process, and the measurement accuracy requirements of irregularly shaped specimens can be met through the setting of detachable high-precision gaskets;

Further, a dial indicator is installed on the digital display vernier distance ruler measurement end position adjustment locator 2, and by setting the dial indicator on the digital display vernier distance ruler measurement end position adjustment locator, the measurement accuracy is directly transformed, and the realization of Different measurement accuracy requirements; according to the lowest position of the test point of the same group of test pieces, adjust the digital display vernier distance ruler to measure the height of the end position to meet the measurement point;

Further, by moving the digital display vernier rangefinder, the digital display vernier rangefinder measures the end position and adjusts the positioner 2 to fit with the standard measuring rod and compress it to the middle of the range, set the dial indicator to zero, remove the standard measuring rod and replace it. The test piece can be placed on the test piece support rod to start measuring, and the test piece length value can be obtained by adding the measured value and the standard measuring rod value;

The standard measuring rod is placed in the fixed groove of the standard measuring rod placing block, and the detachable high-precision gasket and its groove are the center line of the instrument measurement, ensuring that the linear measuring point of the test piece is relatively fixed;

In this embodiment, by setting the test piece support and positioning rod on the standard rod placing block, and at the same time drawing equidistant marking lines on the lower surface of the test piece, the same test piece is moved and placed for multiple times to ensure that the test piece and the initial measurement position are completely close to each other. may be the same;

In this embodiment, if it is necessary to measure at any middle position of the instrument, in order to ensure that the measurement position of the measurement specimen is not changed for the second time, it is necessary to draw a support on the lower surface of the specimen according to the length of the specimen under test. Mark the line, place the test piece support positioning rod according to the marking line; place the test piece on the support positioning rod, adjust the starting position of the digital display vernier distance ruler according to the height of the measuring point, adjust the locator and the digital display vernier distance ruler to measure the end position Adjust the positioner 1 or 2 to make the height meet the needs of the measuring point.

In this way, the linear measurement of any size object with different accuracy requirements within the range of the digital vernier scale can be realized; if it needs to be used in any part of the scale in the middle, it can be pre-drawn two pieces on the lower surface of the test piece to support the positioning rod, etc. The distance marking line can make the placement point of the test piece relatively fixed during the secondary measurement, so that the test result is more accurate;

After the test, remove the test piece to clean the dust and ash, and wipe the parts with oiled cotton yarn to prevent rust or blockage for the next use. The components of the detector have a simple structure, and the detection process is completed in a fast, convenient and simple way, and the test data is accurate and the efficiency is high.

The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. within.

Claims (7)

1. A linear dry shrinkage-swelling detector for hard inorganic bulk materials, characterized in that the detector comprises an instrument base frame (2), and the measuring end in the instrument base frame (2) is detachable The high-precision gasket (5) is connected to the instrument base frame (2) through screws. 2 . The linear dry shrinkage-swelling detector for rigid inorganic bulk materials according to claim 1 , wherein the instrument base frame ( 2 ) is provided with a leveling foot ( 1 ) at the bottom; the instrument base frame (2) Together with the leveling feet (1) and the reference platform (3), a horizontal support surface of the detector is formed, and a standard measuring rod placing block (4) is placed on the horizontal supporting surface, and the upper surface of the standard measuring rod placing block faces The lower recess forms equidistant standard measuring rod placing block fixing grooves (14), and the standard measuring rod placing block fixing groove (14) is used for placing the test piece supporting positioning rod (13) or standard measuring rod (15). 3. The linear dry shrinkage-swelling detector for hard inorganic bulk materials according to claim 2, characterized in that a test piece (6) is placed above the standard measuring rod placing block (4), and the test piece (6) is placed above the standard measuring rod placing block (4). Both ends of the test piece (6) extend outward to form a pre-embedded measuring head (16) of the test piece, and the lower surface of the test piece (6) is in contact with the test piece supporting and positioning rod (13) or the standard measuring rod (15). 4. The linear dry shrinkage-swelling detector for hard inorganic bulk materials according to claim 1, characterized in that, a digital display vernier ranging ruler (7) is arranged on the upper end of the detector, and a digital display vernier ranging ruler is provided. (7) The starting end is provided with a digital display vernier ranging ruler starting measurement position adjustment locator (8), and the locator is clamped downward to accept the test piece (6); the digital display vernier ranging ruler (7) terminal is provided with a digital display Adjust the positioner 1 (9) for the end position of the vernier ranging ruler. 5. The linear dry shrinkage-swelling detector for hard inorganic bulk materials according to claim 3, characterized in that, one end of the pre-embedded measuring head (16) of the test piece is connected to a removable high-precision gasket (5). ), and the other end is connected to the digital display vernier ranging ruler end position adjustment locator 2 (11). 6. The linear dry shrinkage-swelling detector for hard inorganic bulk materials according to claim 4, characterized in that, the digital display vernier distance measuring ruler (7) and the digital display vernier distance measuring ruler end position adjustment and positioning The device 1 (9) forms a bracket to connect the digital display vernier distance ruler reading display (10), the digital display vernier distance ruler end position adjustment locator 1 (9) and the digital display vernier distance ruler end position adjustment locator 2 (11) forming a bracket to connect the digital dial indicator (12). 7. The method of using the linear dry shrinkage-swelling detector for hard inorganic bulk materials according to one of claims 1-6, characterized in that, the detection process of the detector is as follows: 1. The measurement accuracy is 0.01mm; place the test piece (6) on the test piece support rod (13), adjust the starting position of the digital vernier rangefinder, adjust the positioner (8) and the digital display vernier rangefinder Adjust the positioner 1 (9) at the end position. The heights of the two adjusted positioners are in line with the measuring points, and at the same time, the positioners are fitted with the two measuring surfaces, and then the digital vernier rangefinder reading display (10) is set to zero. can be measured; 2. The measurement accuracy is 0.001mm; first, install or remove the detachable high-precision gasket (5) at the starting end according to the measurement needs, place the standard measuring rod (15) on the standard measuring rod placing block (4), and then place the standard measuring rod (15) on the standard measuring rod placing block (4). Install the dial indicator (12) on the digital vernier range finder to adjust the measurement end position of the locator 2 (11), and adjust the digital vernier range finder to measure the end position. Adjust the height of the locator 2 (11) to match the measurement point; The digital vernier range finder (7) makes the digital vernier range finder measure the end position and adjusts the positioner 2 (11) to fit the standard measuring rod (15) and compress it to the middle of the range, and set the dial indicator (12) to zero , remove the standard measuring rod (15) and replace it with the test piece support rod (13) to start measuring the test piece (6), and add the measured value to the value of the standard measuring rod (15) to obtain the test piece length value.

Images