CN205192398U - Low dip formula comparator - Google Patents

Abstract

The utility model discloses a slightly tilted ratio meter, which comprises a base, a dial indicator and a bracket. The base is fixed at an angle of 20° after one end of the upper baffle is fixed to the upper end of the bracket. The lower baffle of the base and the upper Adjusting probes and dial gauges are respectively fixed on the baffle. Positioning side prompt lines, positioning mid-position prompt lines and positioning ribs are set on the base surface for accurate positioning of the test piece. The base is also equipped with calibration instruments. par used. The utility model reduces the inclination angle between the base and the horizontal plane by adding the prompt line on the positioning side, the prompt line in the positioning and the positioning ribs, effectively reduces the test error of the experimental test, improves the stability and consistency of the test results, and enhances the This ensures the accuracy and reliability of the test results of the ratio meter and ensures the accuracy of the test results.

Description

micro-tilt ratio meter

technical field

The utility model relates to the technical field of experimental testing instruments, in particular to a slightly tilted ratio meter.

Background technique

The ratio meter is often used to detect the shrinkage expansion rate of cement-based materials, such as: linear expansion rate of expansive cement, free expansion rate and limited expansion rate of self-stressed cement, free expansion rate of cement mortar and concrete, concrete alkali-aggregate The expansion rate of the reaction specimen, etc. The ratio meter specially used to detect the shrinkage and expansion ratio of cement-based materials can be divided into vertical, horizontal and inclined according to the standing mode of the instrument; according to the positioning mode of the test piece, it can be divided into: free positioning type and angle positioning type ( V-groove). The vertical ratio meter is only suitable for smaller-sized test pieces; the free-positioning ratio meter without any structure on the test surface is not easy to align the center line when the test piece is placed; the ratio meter using V-shaped grooves to position the specimen, Water is easy to accumulate in the tank, which brings inconvenience to the test.

GB50119-2003 "Technical Specifications for the Application of Concrete Admixtures" stipulates a concrete expansion and contraction instrument. Or some of the disadvantages of horizontal calimeters. However, the instrument also has the following disadvantages: 1. During the test process, due to the difference in the centering of the test piece on the base surface of the ratio meter, the repeatability of the test results is poor, which reduces the accuracy of the test data; The inclination angle of the base surface of the long meter is too large, and the test piece and the probe are prone to compression deformation, which affects the accuracy of the test results and reduces the accuracy of the test data.

Utility model content

The purpose of the utility model is to overcome the above-mentioned problems and provide a slightly tilted ratio meter with simple structure and accurate and reliable detection results.

In order to achieve the above object, the slightly tilted ratio meter designed by the utility model includes a base, a dial indicator and a support, and the two ends of the base are respectively provided with a lower baffle and an upper baffle, and the lower baffle An adjusting measuring head is fixed on the upper baffle, a dial gauge is fixed on the upper baffle, the measuring head of the dial gauge faces the direction of the lower baffle, and one end of the upper baffle of the base is fixedly connected with the bracket.

The two sides of the base are respectively provided with positioning ribs and positioning side prompt lines in parallel, and the center of the base is provided with a positioning mid-position prompt line parallel to the positioning side prompt lines, and the connecting line between the lower end of the base and the lower end of the bracket The included angle with the length direction of the base is 20°.

As a preferred solution, the support is perpendicular to the plane where the lower end of the support is located.

As a preferred solution, the adjusting measuring head is fixed on the lower baffle by adjusting screws, and the dial gauge is fixed on the upper baffle by fastening screws.

As a preferred solution, the base is also equipped with a standard rod, and the standard rod is placed on the base through the standard rod racks arranged at both ends.

As a preferred solution, the dial gauge is a high-precision digital display dial gauge.

Beneficial effects of the present utility model: the slightly tilted scale meter designed by the present utility model introduces the positioning side prompt line, the positioning prompt line and the positioning rib on the base surface, which greatly reduces the number of test pieces in the scale instrument. The difference in centering on the base surface effectively improves the stability and accuracy of the test results; by reducing the angle between the lower end of the base and the lower end of the bracket and the length direction of the base to 20°, it reduces the accuracy of the test results. The compression force of the test piece and the probe reduces the compression deformation of the test piece and the probe, improves the accuracy and consistency of the test results of the ratio meter, and ensures the accuracy of the test results.

Description of drawings

Fig. 1 is the structural representation of the utility model slightly inclined type ratio meter;

Fig. 2 is the top view of the base of the utility model micro-tilt type ratio meter;

Fig. 3 is the structural representation of the standard bar of the utility model micro-tilt type ratio meter;

In the figure: base 1, fastening screw 2, dial indicator 3, upper baffle 4, bracket 5, lower baffle 6, adjusting probe 7, adjusting screw 8, standard rod 9, positioning rib 10, positioning side Prompt line 11, prompt line 12 during positioning, and standard pole frame 13.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

As shown in Figure 1, a kind of slightly tilted ratio meter comprises a base 1, a dial indicator 3 and a support 5, the support 5 is placed vertically, one side of the base 1 is fixed to the upper end of the support 5, and the base The angle between the lower end of 1 and the lower end of bracket 5 and the length direction of base 1 is 20°; the two ends of base 1 are respectively provided with lower baffle 6 and upper baffle 4, and the lower baffle 6 passes through The adjusting screw 8 is fixed with an adjusting probe 7, and the upper baffle 4 is fixed with a high-precision digital display dial indicator 3 through a fastening screw 2, and the measuring head of the high-precision digital display dial indicator 3 faces the lower baffle (6) direction.

As shown in Figure 2, the two sides of the base 1 are respectively provided with positioning ribs 10 and positioning side prompt lines 11, the center of the base 1 is provided with a positioning prompt line 12, and the positioning prompt line 12 is located at Position the inner side of the rib 10 and the center of the positioning side prompting line 11 , and the positioning prompting line 12 is parallel to the positioning rib 10 and the positioning side prompting line 11 .

As shown in Figure 3, the base 1 is also equipped with a standard rod 9, the standard rod 9 is placed on the base 1 through a standard rod frame 13, and the standard rod frame 13 is a cuboid plate with a central hole, The standard rod 9 passes through the central hole of the standard rod frame 13 and is vertically fixedly connected with the standard rod frame 13. The width of the standard frame 13 is equal to the distance between the inner edge of the positioning rib 10 and the prompt line 11 on the positioning side.

3 hours before the test, place the slightly tilted ratio meter including standard par 9 and high-precision digital display dial gauge 3 in a work room with an ambient temperature that meets the requirements of the specification; use standard par 9 to calibrate the benchmark before measurement length, the standard rod 9 is placed between the upper baffle plate 4 of the ratio meter base 1 and the adjustment probe 7, one end of the standard rod 9 is close to the adjustment probe 7 on the lower baffle plate 6, and the standard rod frame 13 is vertical Close to the positioning rib 10, the standard rod 9 is located directly above the prompt line 12 during positioning, and parallel to the prompt line 11 on the positioning side and the prompt line 12 during positioning, loosen the fastening screw 2, and adjust the high-precision digital display dial gauge Position 3 makes the measuring head of the high-precision digital display dial gauge 3 lightly touch the front end of the standard rod 9, tighten the fastening screw 2 to fix the high-precision digital display dial gauge 3, fine-tune the standard rod 9 to make it close to the positioning rib 10, After clearing the high-precision digital display dial indicator 3, move out the standard rod 9; when measuring the piece to be tested, it is stipulated that the width of the piece to be tested is equal to the parallel distance between the inner side of the positioning rib 10 and the prompt line 11 on the positioning side, and the centering is adopted. The method of placing the centering par 9 is used to place the test piece in the center; record the length of the test piece, and one experiment is over; The multiple measurement results of the test piece are self-repeatable.

Claims (5)

1. a low dip formula comparator, comprise pedestal (1), clock gauge (3) and support (5), described pedestal (1) two ends are respectively arranged with lower baffle plate (6) and overhead gage (4), described lower baffle plate (6) is fixed with and regulates gauge head (7), described overhead gage (4) is fixed with clock gauge (3), the measuring head of described clock gauge (3) is towards lower baffle plate (6) direction, overhead gage (4) one end of described pedestal (1) is fixedly connected with support (5), it is characterized in that: described pedestal (1) both sides are arranged with location rib (10) and oriented side indication wire (11) respectively in parallel, described pedestal (1) center is provided with indication wire (12) in the location being parallel to oriented side indication wire (11), the angle of the same pedestal of line (1) length direction of described pedestal (1) lower end and support (5) lower end is 20 °.

2. low dip formula comparator according to claim 1, is characterized in that: described support (5) and support (5) place, lower end plane orthogonal.

3. low dip formula comparator according to claim 1, it is characterized in that: described adjustment gauge head (7) is fixed on lower baffle plate (6) by set screw (8), and described clock gauge (3) is fixed on overhead gage (4) by trip bolt (2).

4. the low dip formula comparator according to claim 1 or 2 or 3, it is characterized in that: described pedestal (1) is also furnished with par (9), described par (9) is placed on pedestal (1) by the standard bridge (13) being arranged on two ends.

5. the low dip formula comparator according to claim 1 or 2 or 3, is characterized in that: described clock gauge (5) is high accuracy number display clock gauge.