Concrete mortar thickness tester

Abstract

The utility model discloses a concrete mortar thickness tester which comprises an outer ring cylinder with three test needle groups at the bottom and an inner sleeve with a light bottom plate at the bottom, the outer ring cylinder is sleeved on the outer side of the inner sleeve and is in positioning connection with the inner sleeve through a screwing positioning piece on the outer ring cylinder, and the number of the test needle groups is three. The three test needle groups are arranged at intervals and are uniformly distributed at the lower end of the annular end surface of the outer ring cylinder, and each test needle group comprises a plurality of test needles. The tester improves the detection convenience, reduces the error probability during detection, improves the detection construction efficiency under the condition of ensuring the concrete mortar thickness detection accuracy and detection precision, is simple and novel in overall structure, is convenient to process and operate, greatly improves the practicability of concrete mortar thickness detection, and is suitable for popularization and application. The method is especially suitable for airport cement concrete pavement construction.

Description

TECHNICAL FIELD

[0001] The utility model relates to the mortar thickness detection field, concretely relates to a concrete mortar thickness measuring instrument. BACKGROUND

[0002] The mortar thickness of mortar pavement directly influences the construction quality and finished product appearance of concrete road, and the detection of the mortar thickness in the prior art mostly still relies on manual experience to roughly estimate, and the accuracy is not easy to grasp.

[0003] There are also mortar thickness detectors for mortar thickness detection, for example, the utility model discloses a cement concrete mortar thickness measuring instrument in the application number 202223371401.7, which comprises a measuring cylinder, a measuring cylinder, a buffer positioning part and a plurality of measuring rods, the measuring cylinder is sleeved outside the measuring cylinder and the displacement is measured through the scale line on the measuring cylinder, and the plurality of measuring rods are distributed at the lower end of the measuring cylinder;The buffer positioning part comprises an elastic special-shaped rod arranged in the measuring cylinder and two rod limiting sleeves connected to the inner wall of the measuring cylinder;The end of the elastic special-shaped rod passes through the rod limiting sleeve and the measuring cylinder and is connected to the inner wall of the measuring cylinder, and the inner wall of the measuring cylinder is provided with an annular clamping groove limiting for clamping the elastic special-shaped rod.

[0004] However, the utility model has the following problems in the use process:

[0005] 1、Although the buffer positioning part is more convenient for positioning, the elastic special-shaped rod is easy to hold in the use process due to the weight and position of the inner and outer cylinders, so that the inner and outer cylinders deviate from the position.

[0006] 2、Although the measuring rod has a plurality of, but after connecting, the single measuring rod is inserted into the concrete mortar, and there is a certain probability that the single measuring rod is inserted into the stone above the concrete mortar, so that the overall measurement deviates.

[0007] 3、The overall structure has high manufacturing cost, and the buffer positioning part is easy to disassemble after use, so that the installation is not convenient, and the elastic special-shaped rod needs to have high elasticity, so that the material cost of the elastic special-shaped rod is high. Utility model content

[0008] The utility model aims at providing a concrete mortar thickness measuring instrument, which improves the convenience of detection under the condition of ensuring the accuracy and detection precision of concrete mortar thickness detection, and the overall structure is simple and novel, convenient to process and easy to operate.

[0009] In order to achieve the above purpose, the utility model adopts the technical scheme of:

[0010] A concrete mortar thickness gauge comprises an outer ring cylinder with a test needle group at the bottom and an inner sleeve with a light base plate at the bottom, the outer ring cylinder is sleeved outside the inner sleeve and is positioned and connected with the inner sleeve through screwing positioning members on the outer ring cylinder; the test needle group has three groups, the three groups of test needle groups are arranged at intervals and are uniformly distributed at the lower end of the annular end face of the outer ring cylinder, and each group of test needle groups contains a plurality of test needles.

[0011] Preferably, the outer ring cylinder and the inner sleeve are both circular cylindrical, the inner diameter of the outer ring cylinder is larger than the outer diameter of the inner sleeve; the inner sleeve is made of aluminum material or polyethylene material, and the outer ring cylinder is made of stainless steel material or copper material.

[0012] Preferably, the sum of the height of the outer ring cylinder and the test needle is less than the height of the inner sleeve; the outer wall of the upper part of the inner sleeve is provided with a scale line with a precision of 1mm.

[0013] Preferably, the outer diameter of the outer ring cylinder is 79mm-81mm, the inner diameter of the outer ring cylinder is 74mm-76mm, the wall thickness of the outer ring cylinder is 2.4mm-2.6mm, and the height of the outer ring cylinder is 69mm-71mm; the outer wall of the upper end of the outer ring cylinder is bevel-shaped, and the height of the bevel-shaped outer wall is 6.4mm-6.6mm.

[0014] Preferably, the wall thickness of the inner sleeve is 1.4mm-1.6mm, and the height of the inner sleeve is 99mm-101mm; the height of the test needle is 10mm-13mm.

[0015] Preferably, each group of test needle groups contains 9 test needles, and the 9 test needles are arranged in an arc shape and are uniformly distributed; the distance between adjacent test needles in the test needle group is 4mm-6mm.

[0016] In adjacent test needle groups, the included angle between the first test needle in the previous test needle group and the first test needle in the next test needle group is 120°.

[0017] Preferably, the test needle comprises an upper cylindrical part and a lower needle tip part, the upper cylindrical part and the lower needle tip part are integrally formed, the end of the lower needle tip part is elliptical spherical, and the upper cylindrical part is welded with the lower end face of the outer ring cylinder or is screw-connected with the outer ring cylinder through threads;

[0018] Each test needle is provided with an anti-rust coating.

[0019] Preferably, the screwing positioning members are provided with at least one group, and each group includes two symmetrically arranged screwing positioning members;

[0020] The screwing positioning members are provided with threads, and the outer wall of the outer ring cylinder is provided with a threaded hole which is adapted to the threads of the screwing positioning members;

[0021] The outer end of the screw positioning piece is fixedly connected with a butterfly rotating nut.

[0022] Preferably, the light bottom plate is in a circular plate shape, and the light bottom plate is a thin metal plate or a plastic plate.

[0023] The utility model discloses the beneficial effect is:

[0024] The thickness detector of concrete mortar improves the convenience of detection, reduces the error probability when detecting, improves the efficiency of detection construction, and is simple and novel in overall structure, convenient to process and easy to operate, greatly improves the practicality of concrete mortar thickness detection, and is especially suitable for airport cement concrete surface layer construction. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the schematic diagram of the whole structure of concrete mortar thickness detector.

[0026] Figure 2 It is the schematic diagram of the outer ring cylinder structure.

[0027] Figure 3 It is the schematic diagram of the inner sleeve structure.

[0028] Figure 4 It is Figure 1 The local schematic diagram of position A.

[0029] Figure 5 It is the schematic diagram of the connection position style of test needle group and outer ring cylinder.

[0030] Figure 6 It is the structural schematic diagram of test needle. DETAILED DESCRIPTION

[0031] The utility model will be described in detail in connection with the drawings:

[0032] Example 1

[0033] In combination Figures 1 to 6 A kind of concrete mortar thickness detector, including the outer ring cylinder 2 of bottom with test needle group 1 and the inner sleeve 3 of bottom with light bottom plate 31, outer ring cylinder 2 is sleeved in the outer side of inner sleeve 3 and is positioned and connected by the screw positioning piece 4 on the outer ring cylinder 2 2 with inner sleeve 3.

[0034] Test needle group 1 has three groups, three groups test needle group 1 interval arrangement and are distributed in the lower end of the annular end surface of outer ring cylinder 2, and each test needle group 1 contains multiple test needles 11, needle tip is rounded, and is oval spherical, needle tip is not sharp foot.

[0035] Inner sleeve 3 is made of light waterproof material, for example, adopts aluminium material or polyethylene material, purpose is to reduce self-weight, reduce the error of measurement.

[0036] The outer ring cylinder is made of a material with certain weight, thin thickness and firm structure, such as stainless steel or copper, to increase the self-weight. The outer ring cylinder 2 and the inner sleeve 3 are both in the shape of a circular cylinder, and the inner diameter of the outer ring cylinder 2 is larger than the outer diameter of the inner sleeve 3. In addition, it is found in the actual use that the 27 test needles need to be treated to prevent rust (cement concrete is a strong alkaline environment), otherwise they will soon rust.

[0037] Embodiment 2

[0038] According to the disclosure of the above embodiments, the following is further disclosed in this embodiment:

[0039] The sum of the height of the outer ring cylinder 2 and the height of the test needle 11 is less than the height of the inner sleeve 3; the outer wall of the upper part of the inner sleeve is provided with a scale line with a precision of 1 mm.

[0040] The outer diameter of the outer ring cylinder 2 is 79-81 mm, the inner diameter of the outer ring cylinder 2 is 74-76 mm, the wall thickness of the outer ring cylinder 2 is 2.4-2.6 mm, and the height of the outer ring cylinder 2 is 69-71 mm; the outer wall of the upper end of the outer ring cylinder 2 is beveled, and the height of the beveled outer wall is 6.4-6.6 mm.

[0041] The wall thickness of the inner sleeve 3 is 1.4-1.6 mm, and the height of the inner sleeve 3 is 99-101 mm; the height of the test needle is 10-13 mm.

[0042] Embodiment 3

[0043] According to the disclosure of the above embodiments, the following is further disclosed in this embodiment:

[0044] Each group of test needle groups 1 contains 9 test needles 11, which are arranged in an arc shape and are uniformly distributed; the distance between adjacent test needles in each group of test needle groups 1 is 4-6 mm.

[0045] In adjacent test needle groups 1, the included angle between the first test needle in the previous group of test needle groups 1 and the first test needle in the next group of test needle groups 1 is 120°.

[0046] The test needle 11 includes an upper cylindrical part and a lower needle tip part, which are integrally formed, and the upper cylindrical part is welded or screw-connected with the lower end face of the outer ring cylinder through threads.

[0047] The screw positioning member 4 is provided with at least one group, each group including two symmetrically arranged screw positioning members 4;

[0048] The screw-on positioning component 4 is a pin, screw, set screw, or other positioning component with a supporting effect. The screw-on positioning component 4 is provided with threads, and the outer wall of the outer ring cylinder 2 is provided with threaded through holes that are compatible with the screw-on positioning component 4.

[0049] The outer end of the screw-positioning component 4 is fixedly connected to a butterfly rotating nut 41.

[0050] The lightweight base plate 31 is circular and can be made of thin metal or plastic.

[0051] Example 4

[0052] A concrete mortar thickness measuring instrument comprises an outer ring cylinder (outer diameter 80mm, inner diameter 75mm, wall thickness 2.5mm, height 70mm, blade height 6.5mm) with 27 test needles at the bottom and an inner sleeve cylinder (outer diameter 74mm, inner diameter 71mm, wall thickness 1.5mm, height 100mm) with a lightweight base plate, achieving a detection accuracy of 0.5mm. Both the outer ring cylinder and the inner sleeve cylinder are cylindrical, with the inner diameter of the outer ring cylinder being larger than the outer diameter of the inner sleeve cylinder. The inner sleeve cylinder is made of aluminum or polyethylene, while the outer ring cylinder cylinder is made of stainless steel or copper.

[0053] The testing steps for the concrete mortar thickness measuring instrument are as follows:

[0054] S1, Selection of test location. After the surface layer construction equipment has vibrated, leveled, and smoothed the surface, the test location is in the middle of the paved road or at a distance of no less than 100mm from the support formwork.

[0055] S2. Perform instrument inspection. The instrument must be free of contaminants. Place the mortar thickness gauge on a horizontal plate with the outer ring sleeve over the inner sleeve, and tighten the screw-on positioning parts on both sides. At this time, the tip of the test needle on the outer ring sleeve should be on the same plane, and the top should be at the zero mark on the inner sleeve. If it is not at the zero mark, record the initial reading.

[0056] S3. During the test, first wipe the inner and outer sleeves and the test needle with a damp cloth. With the test needle facing down, place the outer sleeve over the inner sleeve, tighten the screw-on positioning parts on both sides, and gently place it on the concrete slab after grouting. Simultaneously pull out the two set screws horizontally, allowing the outer sleeve to sink under its own weight. When the outer sleeve stops sinking, read a pair of radial scale readings on the inner sleeve. The depth of the lightweight inner sleeve with a bottom sinking into the mortar is small and can be ignored. Repeat step S3 twice more at adjacent locations.

[0057] S4. When calculating data, each measured value is the difference between two pairs of readings, and the smaller of the two values ​​is taken as the result, accurate to 0.5 mm.

[0058] S5, the test result is accurate to 0.5mm with the average value of three parallel test results. When the single measurement data is more than 1.5mm from the average value, the data should be removed, re-measured and the average value should be recalculated.

[0059] Of course, the above description is not a limitation of the utility model, the utility model is not limited to the above examples, and the changes, modifications, additions or replacements made by the person skilled in the art within the essential scope of the utility model should also belong to the protection scope of the utility model.

Claims

1. A concrete mortar thickness gauge, characterized in that, The outer ring cylinder with test needle groups at the bottom and the inner sleeve with a light bottom plate at the bottom are sleeved outside each other and are positioned and connected through screwing positioning members on the outer ring cylinder; the test needle groups are three groups, which are arranged at intervals and are uniformly distributed at the lower end of the annular end face of the outer ring cylinder, and each group contains a plurality of test needles.

2. A concrete mortar thickness gauge according to claim 1, characterised in that The outer ring cylinder and the inner sleeve are both circular cylinders, the inner diameter of the outer ring cylinder is larger than the outer diameter of the inner sleeve; the inner sleeve is made of aluminum material or polyethylene material, and the outer ring cylinder is made of stainless steel material or copper material.

3. The concrete mortar thickness gauge according to claim 1, characterized in that, The sum of the height of the outer ring cylinder and the test needle is less than the height of the inner sleeve; the outer wall of the upper part of the inner sleeve is provided with scale lines with an accuracy of 1mm.

4. The concrete mortar thickness gauge according to claim 1, characterized in that, The outer diameter of the outer ring cylinder is 79-81mm, the inner diameter of the outer ring cylinder is 74-76mm, the wall thickness of the outer ring cylinder is 2.4-2.6mm, and the height of the outer ring cylinder is 69-71mm; the outer wall of the upper end of the outer ring cylinder is bevel-shaped, and the height of the bevel-shaped outer wall is 6.4-6.6mm.

5. The concrete mortar thickness gauge according to claim 1, characterized in that, The wall thickness of the inner sleeve is 1.4-1.6mm, and the height of the inner sleeve is 99-101mm; the height of the test needle is 10-13mm.

6. The concrete mortar thickness gauge according to claim 1, characterized in that, Each test needle group contains 9 test needles, which are arranged in an arc shape and are uniformly distributed, and the distance between adjacent test needles in the test needle group is 4-6mm; The included angle between the first test needle in the previous test needle group and the first test needle in the next test needle group is 120°.

7. The concrete mortar thickness gauge according to claim 1, characterized in that, The test needle comprises an upper cylindrical part and a lower needle tip part, which are integrally formed, the end of the lower needle tip part is elliptical and spherical, and the upper cylindrical part is welded or screw-connected with the lower end face of the outer ring cylinder; each test needle is provided with an anti-rust coating.

8. The concrete mortar thickness gauge according to claim 1, characterized in that, The screwing positioning members are provided with at least one group, each group comprising two symmetrically arranged screwing positioning members; The screwing positioning members are provided with threads, and the outer wall of the outer ring cylinder is provided with threaded through holes matched with the screwing positioning members; The outer end of the screwing positioning member is fixedly connected with a butterfly rotating nut.

9. The concrete mortar thickness gauge according to claim 1, characterized in that, The light bottom plate is circular and thin, and is a thin metal plate or a plastic plate.

Images