Concrete thickness measuring instrument

Abstract

The utility model belongs to the technical field of instruments for building construction, and particularly relates to a concrete thickness measuring instrument. According to the concrete thickness measuring instrument provided by the utility model, the fixed pore plate unit, the movable pore plate unit and the scale rod unit are arranged on the supporting column unit, so that 1, the measuring instrument can be used before and after the solidification of concrete, and the concrete does not need to support the measuring instrument; and 2, the scale rod unit has an inserting effect on the fixed pore plate unit and the movable pore plate unit all the time, so that the scale rod unit is not easy to deflect and break, and the reading precision is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of instruments for building construction, in particular to a concrete thickness measuring instrument. Background Art

[0002] Generally, during the pouring process of concrete structures, their thickness needs to be measured to ensure that the thickness parameters meet the standards. Otherwise, if the concrete structure is too thick, there will not be enough space for other structures that match it, and it will also be at risk of collapsing the structure below. If the concrete structure is too thin, its own structural strength will be insufficient.

[0003] Therefore, in the above-mentioned pouring process, a concrete thickness measuring instrument is needed. On the other hand, the existing common concrete thickness measuring instrument mainly comprises a frame and a scale.

[0004] The frame is placed on the concrete that has not yet fully solidified, and the ruler is inserted into the concrete until it touches the base surface where the concrete begins to be poured. Finally, the readings at the beginning of insertion and the end of insertion are read on the ruler, and the difference between the two is the thickness of the concrete structure.

[0005] For example, a Chinese utility model patent with authorization announcement number CN220625133U and authorization announcement date 2024.03.19 discloses a device for quickly detecting the thickness of cast-in-place concrete floor slabs, including a device shell, a visible glass plate embedded in the front side of the device shell, and scale lines are set on the visible glass plate. A movable slider is slidably arranged inside the device shell, and two groups of connecting rods are symmetrically installed on both sides of the movable slider. The free ends of the two groups of connecting rods are both installed with gripping handles, and the lower end face of the movable slider is fixedly connected to a plug rod, and a base is provided at the bottom of the device shell, and the lower part of the base is threadedly connected to a mounting plate, and the upper end face of the mounting plate is symmetrically and fixedly provided with two groups of fixed pedals.

[0006] The advantages of the concrete floor thickness detection device in this utility model patent are as follows: the thickness of the concrete floor can be read intuitively and quickly, and the mounting plate and the annular scraper can be disassembled and cleaned separately, which is convenient for later maintenance.

[0007] However, in actual use, the thickness detection device still has at least the following two shortcomings, which are also the technical problems to be solved by the utility model, namely:

[0008] 1. Its practicality is general and can only be used on concrete structures with sufficient curing degree. Because the operator has to stand on the pedal, it cannot be used in the early stage of concrete pouring process;

[0009] 2. The upper part of the rod structure is limited forward and backward only by a movable slider, and lacks left and right limit functions. Therefore, the rod is relatively easy to deviate left and right, making it difficult to insert downward, or increasing the risk of breaking during insertion.

[0010] So in summary, there is an urgent need for a new thickness measuring instrument that can be used in both the early and late stages of concrete curing and has higher stability in the vertical insertion structure, so as to be used for measuring various types of cast-in-place concrete facilities. Utility Model Content

[0011] The utility model provides a concrete thickness measuring instrument, which can be arranged on a supporting column unit in a manner such that: 1. the measuring instrument can be used before and after concrete solidification, and the concrete does not need to be supported; 2. the scale bar unit always has a plug-in effect on the fixed orifice plate unit and the movable orifice plate unit, thereby ensuring that the scale bar unit is not easily deflected or broken, thereby improving the reading accuracy.

[0012] The technical solution adopted by the utility model to solve the above-mentioned problem is: a concrete thickness measuring instrument, the structure of which includes a support column unit for inserting into a concrete layer, a fixed orifice plate unit arranged on the upper end surface of the support column unit, a movable orifice plate unit sleeved on the support column unit, and a scale rod unit plugged onto the fixed orifice plate unit and the movable orifice plate unit.

[0013] A further preferred technical solution is that the support column unit includes a straight rod and a conical block arranged at the end of the straight rod.

[0014] A further preferred technical solution is that the number of the support column units is 3.

[0015] A further preferred technical solution is that the fixed orifice plate unit includes a transverse plate arranged on the upper end surface of the straight rod, and an upper hole arranged on the transverse plate and used for inserting the scale rod unit.

[0016] A further preferred technical solution is that the movable orifice plate unit includes a dropping plate arranged on at least two of the supporting column units, a mounting hole arranged on the dropping plate and used to pass through the supporting column unit, and a lower hole arranged on the dropping plate and used to pass through the scale rod unit.

[0017] A further preferred technical solution is that the movable orifice plate unit further comprises an opening for indicating an insertion starting point, which is arranged on the lower hole and is used to expose the scale rod unit.

[0018] A further preferred technical solution is that the scale rod unit comprises a scaled straight rod inserted in the upper hole and the lower hole, and a pointed rod arranged on the lower end surface of the scaled straight rod.

[0019] A further preferred technical solution is that the scale rod unit further includes a plurality of slots arranged in a vertical arrangement on the scaled straight rod, and an alternately used pull rod arranged on one of the slots and used to push the scaled straight rod downward.

[0020] A further preferred technical solution is that the scale rod unit also includes a waiting screw arranged on the upper end surface of the scaled straight rod, and an anti-drop nut arranged on the waiting screw and screwed to the insertion end of the scaled straight rod after being removed, so as to engage with the anti-dropping plate.

[0021] A further preferred technical solution is that a threaded section for mounting the anti-drop nut is provided at the insertion end of the graduated straight rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 It is a schematic diagram of the position structure of the support column unit in the utility model when viewed from an upward angle.

[0024] Figure 3 It is a schematic diagram of the position structure of the movable orifice plate unit in the utility model from a top view.

[0025] Figure 4 It is a structural schematic diagram of the scale rod unit in the utility model.

[0026] Figure 5 It is a schematic diagram of the method of use of the utility model.

[0027] Figure 6 It is a schematic diagram of the use method of the anti-drop nut in the utility model.

[0028] Figure 7 It is a schematic diagram of the waiting state of the anti-drop nut in the utility model.

[0029] In the figure, the meanings of the symbols are as follows:

[0030] Concrete layer a, reading position b;

[0031] Support column unit 1, fixed orifice plate unit 2, movable orifice plate unit 3, scale rod unit 4;

[0032] Straight rod 101, conical block 102, horizontal plate 201, upper hole 202, drop plate 301, mounting hole 302, lower hole 303, opening 304 for indicating the insertion starting point, straight rod 401 with scale, pointed rod 402, slot 403, alternate pull rod 404, waiting screw 405, anti-drop nut 406. DETAILED DESCRIPTION

[0033] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0034] As attached Figure 1-7 As shown, a concrete thickness measuring instrument comprises a support column unit 1 for inserting into a concrete layer a, a fixed orifice plate unit 2 arranged on the upper end surface of the support column unit 1, a movable orifice plate unit 3 sleeved on the support column unit 1, and a scale rod unit 4 inserted on the fixed orifice plate unit 2 and the movable orifice plate unit 3.

[0035] In this embodiment, the support column unit 1 and the fixed orifice plate unit 2 are fixedly connected, and the movable orifice plate unit 3 needs to fall downward onto the concrete layer a when in use, so as to provide the scale rod unit 4 with a socket limiting effect as close as possible to the bottom, so that the upper and lower combined socket structures on the scale rod unit 4 have a larger effective socket limiting area, and try to ensure that the scale rod unit 4 is straight up and down and not easy to deflect.

[0036] When the measuring instrument is in use, when the lower end of the scale rod unit 4 just touches the concrete layer a, the first degree is taken thereon, and then the lower end of the scale rod unit 4 rests against the base of the concrete pouring and cannot go down any further, at this time the second degree is taken, and the difference between the two readings is the thickness of the concrete layer a.

[0037] On the other hand, compared with the solution that only includes the support column unit 1 and the fixed orifice plate unit 2, and the scale is directly set on the support column unit 1, the measuring instrument in this embodiment has the following advantages:

[0038] First, all concrete thickness measuring instruments will inevitably be stained with concrete, and the fixed orifice plate unit 2 and the movable orifice plate unit 3 in this embodiment have a concrete scraping effect on the scale rod unit 4, which cannot be achieved by directly setting the scale on the above-mentioned support column unit 1;

[0039] Second, even the scale rod unit 4 in this embodiment and the support column unit 1 in the above scheme cannot be used because the scales are covered by concrete. In this embodiment, only the scale rod unit 4 needs to be replaced, while the above scheme requires the entire unit to be replaced, which is also very practical.

[0040] Finally, the main body material of the measuring instrument in this embodiment is metal or hard plastic.

[0041] The support column unit 1 includes a straight rod 101 and a conical block 102 arranged at the end of the straight rod 101 .

[0042] In this embodiment, the conical block 102 serves to make the insertion of the straight rod 101 into concrete more labor-saving.

[0043] In addition, the bottom diameter of the conical block 102 is smaller than or equal to the diameter of the straight rod 101 .

[0044] The number of the supporting column units 1 is 3.

[0045] In this embodiment, the three support column units 1 have better stability than the two support column units 1 , that is, the fixed orifice plate unit 2 is always horizontal during use.

[0046] The fixed orifice plate unit 2 includes a transverse plate 201 disposed on the upper end surface of the straight rod 101 , and an upper hole 202 disposed on the transverse plate 201 and used for inserting the scale rod unit 4 .

[0047] In this embodiment, the shape of the horizontal plate 201 is rectangular, and the shape of the upper hole 202 is circular. The upper surface or the lower surface of the horizontal plate 201 can be used as the reading position of the scale on the scale rod unit 4. Figure 5 shown.

[0048] The movable orifice plate unit 3 includes a dropping plate 301 arranged on at least two of the supporting column units 1, a mounting hole 302 arranged on the dropping plate 301 and used to pass through the supporting column unit 1, and a lower hole 303 arranged on the dropping plate 301 and used to pass through the scale rod unit 4.

[0049] In this embodiment, the function of the movable orifice plate unit 3 is to clamp and fix the lower end of the scale rod unit 4 so that both the upper and lower ends of the scale rod unit 4 have a lateral limiting effect to ensure that it is not easily displaced forward, backward, left or right.

[0050] On the other hand, the above-mentioned limiting effect of the movable orifice plate unit 3 is preferably: the dropping plate 301 is as low as possible, thereby forming an effective limiting area as long as possible on the scale rod unit 4. This is the meaning of the above-mentioned word "dropping", that is, when the measuring instrument is inserted downward into the concrete layer a, the dropping plate 301 does not need to be held by hand, and can be directly dropped on the concrete layer a.

[0051] The movable orifice plate unit 3 further includes an insertion starting point indicating opening 304 which is arranged on the lower hole 303 and is used to expose the scale rod unit 4 .

[0052] In this embodiment, the insertion start point indicating opening 304 serves to clearly indicate the moment when the lower end of the scale bar unit 4 just touches the concrete layer a. At this moment, the operator can read the first scale value on the scale bar unit 4.

[0053] The timing of reading the second scale value is relatively easy to determine, that is, the lower end of the scale rod unit 4 is completely against the concrete-casting base. Of course, the above-mentioned base is generally a hard structure.

[0054] The scale rod unit 4 includes a scaled straight rod 401 inserted in the upper hole 202 and the lower hole 303 , and a pointed rod 402 arranged on the lower end surface of the scaled straight rod 401 .

[0055] In this embodiment, the function of the pointed rod 402 is the same as that of the conical block 102, but the former is shaped like a truncated cone. The reason is that the lower surface provided by the truncated cone has a clearer basis for judgment when it just contacts the concrete layer a than the lower tip provided by the cone.

[0056] The scale rod unit 4 further includes a plurality of slots 403 arranged in a vertical arrangement on the scale straight rod 401 , and an alternately used pull rod 404 arranged on one of the slots 403 and used to push the scale straight rod 401 downward.

[0057] In this embodiment, the operation of inserting the scale rod 401 downward into the concrete is relatively laborious, and the method of directly grasping and pushing it downward is relatively laborious and difficult, so 2-3 of the slots 403 and 1 alternately used pull rod 404 are provided to ensure that the alternately used pull rod 404 can pull down the scale rod 401 relatively conveniently and comfortably.

[0058] Moreover, at this time, the opening of the slot 403 does not affect the reading of the scale lines set in a whole circle, and the alternately used pull rod 404 is also alternately used after being pulled out and plugged in, and the scale straight rod 401 will not be stuck at the upper hole 202.

[0059] In addition, the slot 403 and the alternately used pull rod 404 can be simply plugged in or screwed in.

[0060] The scale rod unit 4 also includes a waiting screw 405 arranged on the upper end surface of the scaled straight rod 401, and an anti-drop nut 406 arranged on the waiting screw 405 and screwed to the insertion end of the scaled straight rod 401 after being removed, so as to engage with the anti-drop nut 406 to block the falling plate 301.

[0061] In this embodiment, if the waiting screw 405 and the anti-drop nut 406 are not provided, the measuring instrument is easy to disintegrate when idle, that is, the scale rod unit 4 slides out and separates on the fixed orifice plate unit 2, and the movable orifice plate unit 3 slides out and separates on the support column unit 1, thereby increasing the difficulty of using the measuring instrument.

[0062] Therefore, after the anti-drop nut 406 is removed, it is installed on one end of the graduated straight rod 401 close to the pointed rod 402 , and the pull rod 404 is used alternately on the other end of the graduated straight rod 401 .

[0063] At this point, the scale rod unit 4 will not separate from the fixed orifice plate unit 2, and even if the movable orifice plate unit 3 is separated from the support column unit 1, it will not separate from the scale rod unit 4, ensuring that the entire instrument will not "fall apart", which is very practical.

[0064] When the measuring instrument is used normally, the anti-drop nut 406 is screwed onto the waiting screw rod 405 and is higher than the uppermost slot 403 , so it does not affect the normal thickness measurement operation.

[0065] A threaded section for mounting the anti-drop nut 406 is provided at the insertion end of the graduated straight rod 401 .

[0066] In this embodiment, the pointed rod 402 is at most as thick as the graduated straight rod 401 , so it will not hinder the screwing-on operation of the anti-drop nut 406 .

[0067] On the other hand, two anti-drop nuts 406 may be provided, which are clamped together to make the blocking and limiting effect on the drop plate 301 more stable.

[0068] The above is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but the utility model is not limited to the above implementation. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the utility model. These are all non-creative modifications and are protected by patent law as long as they are within the scope of the claims of the utility model.

Claims

1. A concrete thickness measuring instrument, characterized in that: The structure comprises a support column unit (1) for inserting into a concrete layer (a), a fixed orifice plate unit (2) arranged on the upper end surface of the support column unit (1), a movable orifice plate unit (3) sleeved on the support column unit (1), and a scale rod unit (4) plugged on the fixed orifice plate unit (2) and the movable orifice plate unit (3).

2. A concrete thickness measuring instrument according to claim 1, characterized in that: The support column unit (1) comprises a straight rod (101) and a conical block (102) arranged at the end of the straight rod (101).

3. A concrete thickness measuring instrument according to claim 2, characterized in that: The number of the supporting column units (1) is 3.

4. A concrete thickness measuring instrument according to claim 3, characterized in that: The fixed orifice plate unit (2) comprises a transverse plate (201) arranged on the upper end surface of the straight rod (101), and an upper hole (202) arranged on the transverse plate (201) and used for inserting the scale rod unit (4).

5. A concrete thickness measuring instrument according to claim 4, characterized in that: The movable orifice plate unit (3) comprises a drop plate (301) arranged on at least two of the support column units (1), a mounting hole (302) arranged on the drop plate (301) and used to pass through the support column unit (1), and a lower hole (303) arranged on the drop plate (301) and used to pass through the scale rod unit (4).

6. A concrete thickness measuring instrument according to claim 5, characterized in that: The movable orifice plate unit (3) further comprises an insertion starting point indicating opening (304) which is arranged on the lower hole (303) and is used to expose the scale rod unit (4).

7. The concrete thickness measuring instrument according to claim 5, characterized in that: The scale rod unit (4) comprises a scaled straight rod (401) inserted into the upper hole (202) and the lower hole (303), and a pointed rod (402) arranged on the lower end surface of the scaled straight rod (401).

8. The concrete thickness measuring instrument according to claim 7, characterized in that: The scale rod unit (4) further comprises a plurality of slots (403) arranged in a vertical arrangement on the scale straight rod (401), and an alternately used pull rod (404) arranged on one of the slots (403) and used to push the scale straight rod (401) downward.

9. The concrete thickness measuring instrument according to claim 7, characterized in that: The scale rod unit (4) further comprises a waiting screw rod (405) arranged on the upper end surface of the scaled straight rod (401), and an anti-drop nut (406) arranged on the waiting screw rod (405) and screwed to the insertion end of the scaled straight rod (401) after being removed, so as to engage with the falling plate (301).

10. The concrete thickness measuring instrument according to claim 9, characterized in that: A threaded section for mounting the anti-drop nut (406) is provided at the insertion end of the graduated straight rod (401).

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