CN204269067U - A kind of reinforced concrete protective layer measuring instrument and slab thickness measuring instrument pick-up unit - Google Patents
A kind of reinforced concrete protective layer measuring instrument and slab thickness measuring instrument pick-up unit Download PDFInfo
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- CN204269067U CN204269067U CN201420784679.3U CN201420784679U CN204269067U CN 204269067 U CN204269067 U CN 204269067U CN 201420784679 U CN201420784679 U CN 201420784679U CN 204269067 U CN204269067 U CN 204269067U
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Abstract
The utility model relates to reinforced concrete protective layer measuring instrument and slab thickness measuring instrument pick-up unit, effectively can solve the problem of the accuracy test of reinforced concrete protective layer measuring instrument and slab thickness measuring instrument, technical scheme is, the both sides of pedestal are equipped with stepper motor and tailstock respectively, one end of leading screw is connected with the output shaft of stepper motor, the other end is fixed on tailstock through bearing, leading screw is equipped with sliding bottom, pedestal is provided with guide rail, the dop of sliding bottom bottom is placed in the sliding tray of guide rail, form sliding bottom before guide rail, after slide construction, between sliding bottom and stepper motor, vertical location-plate is housed on pedestal, leading screw is vertical with location-plate, sliding bottom is provided with the measuring position plate parallel with location-plate, the standard reinforcing bar of level measuring position plate is equipped with through fixed support, it is 0mm ~ 500mm that the utility model realizes measurement range, minimum step is spaced apart 0.01mm, the limits of error reach the standard thickness value of 0.2mm, precision is high.
Description
Technical field
The utility model relates to metering, measurement, building inspection field measuring equipment, especially a kind of gauging instrument of development to reinforced concrete protective layer measuring instrument and the measuring accuracy evaluation of slab thickness measuring instrument.
Background technology
At present, domestic related genera of not yet issuing is seemingly for calibrating the product information of the pick-up unit of reinforced concrete protective layer measuring instrument and slab thickness measuring instrument.
The method for testing precision of reinforced concrete protective layer measuring instrument and slab thickness measuring instrument exists shortcoming to be had:
1, current method of testing all adopts rectangular parallelepiped or step test block thickness as standard thickness layer, because the material adopted is different with physical dimension, not easily simulate nonmagnetic, even density, be easy to the standard thickness layer that reappears, often cause the repeatedly precision evaluation result of same instrument inconsistent.The root 1 of this problem is that the magnetic of type formation and stability directly affects the accuracy assessment of instrument.Reinforced concrete protective layer measuring instrument and slab thickness measuring instrument utilize electromagnetic induction principle to detect coagulate layer thickness, and the material of current detection method reference block used mostly is the mixing test block of concrete block, teflon sheet material, marble slabs and its composition.For concrete test block, because concrete composition is complicated, Density inhomogeneity, containing a small amount of magnetic or magnetic conduction substance composition, easily affect measurement result, and concrete test block builds to form, along with moisture evaporation and the environmental impact such as to make moist, its physical dimension as standard value easily changes; For teflon test block, although it is not containing magnetisable material, polyfluortetraethylene plate mostly is moulding material, and optional detection size is few, and material hardness is low, easy compressive deformation, and existence should not be processed, the defect of poor stability.For marble slab test block, its hardness is high, few containing magnetisable material, is good material, but processing difficulties, the following size of optional detection 10mm is few, can not cover by the measurement range of test examination instrument.The root 2 of this problem is that the size of current detection method test block used is few; because the design of reinforced concrete protective layer measuring instrument and slab thickness measuring instrument is the nonlinear relationship utilizing coagulate layer thickness value and electromagnetic induction magnetic field intensity; cause the curve of measurement point representative poor, accurately can not reflect the measuring accuracy of instrument.
2, current detection method test block used measurement range is limited; the instrument of all kinds can not be covered; the measurement range of current slab thickness measuring instrument is from tens millimeters to more than 500 millimeters; the measurement range of reinforced concrete protective layer measuring instrument can from several millimeters to more than 200 millimeters; two quasi-instruments to be detected simultaneously; need the intensive measurement point be combined into from several millimeters to hundreds of millimeter scope; but the detection size of test block used composition or less; comparatively large, all measurement ranges covering two kinds of instruments hardly may.
3, current detection method uses the length size of test block as standard thickness value; the two ends emitting head of reinforced concrete protective layer measuring instrument or slab thickness measuring instrument and Receiver being placed in test block are needed during measurement; often survey a measurement point; all need to change the measuring position of test block, have that operation is heavy, complicated, the time is grown and cannot the shortcoming such as continuous detecting.
Summary of the invention
For above-mentioned situation; for overcoming the defect of prior art; the object of the utility model is just to provide a kind of reinforced concrete protective layer measuring instrument and slab thickness measuring instrument pick-up unit, effectively can solve the problem of the accuracy test of reinforced concrete protective layer measuring instrument and slab thickness measuring instrument.
The technical scheme that the utility model solves is,
A kind of reinforced concrete protective layer measuring instrument and slab thickness measuring instrument pick-up unit, , comprise pedestal, location-plate, measuring position plate, stepper motor, leading screw and sliding bottom, the both sides of pedestal are equipped with stepper motor and tailstock respectively, one end of leading screw is connected with the output shaft of stepper motor, the other end is fixed on tailstock through bearing, leading screw is equipped with sliding bottom, pedestal is provided with guide rail, the dop of sliding bottom bottom is placed in the sliding tray of guide rail, form sliding bottom before guide rail, after slide construction, between sliding bottom and stepper motor, vertical location-plate is housed on pedestal, leading screw is vertical with location-plate, sliding bottom is provided with the measuring position plate parallel with location-plate, the standard reinforcing bar of level measuring position plate is equipped with through fixed support, the vertical round tangent plane of standard bar cross section is parallel with the front surface of location-plate, stepper motor is connected with control Displaying Meter through cable.
The utility model novel structure is unique, and easy to operate, realizing measurement range is 0mm ~ 500mm, and minimum step is spaced apart 0.01mm, and the limits of error reach the standard thickness value of 0.2mm, and precision is high, easy to use, effective, have good Social and economic benef@.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the side view of the utility model location-plate.
Fig. 3 is the side view of the utility model measuring position plate.
Fig. 4 is the front view of the utility model measuring position plate.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Provided by Fig. 1-4, a kind of reinforced concrete protective layer measuring instrument and slab thickness measuring instrument pick-up unit, comprise pedestal, location-plate, measuring position plate, stepper motor, leading screw and sliding bottom, the both sides of pedestal 12 are equipped with stepper motor 1 and tailstock 11 respectively, one end of leading screw 10 is connected with the output shaft of stepper motor 1, the other end is fixed on tailstock 11 through bearing, sliding bottom 14 leading screw 10 is equipped with, pedestal 12 is provided with guide rail 13, the dop of sliding bottom 14 bottom is placed in the sliding tray of guide rail, form sliding bottom before guide rail, after slide construction, between sliding bottom 14 and stepper motor 1, vertical location-plate 3 is housed on pedestal 12, leading screw is vertical with location-plate 3, sliding bottom 14 is provided with the measuring position plate 7 parallel with location-plate 3, the standard reinforcing bar 6 of level measuring position plate 7 is equipped with through fixed support 5, the vertical round tangent plane 6a of standard bar cross section is parallel with the front surface 3a of location-plate 3, stepper motor 1 is connected with control Displaying Meter 16 through cable 17.
Described sliding bottom 14 is equipped with and measures plate panel seat 15, the bottom of measuring position plate 7 is vertically contained in through set screw 4 to be measured on plate panel seat 15; The relative position of measuring position plate 7 and location-plate 3 is adjusted by set screw 4; Measure plate panel seat 15 on the first backup plate 9 sliding bottoms 14;
The square plate structure that described location-plate 3 and measuring position plate 7 are made by marble slab, location-plate 3 has the perforation 8 corresponding with fixed support 5 and standard reinforcing bar 6, fixed support 5 and standard reinforcing bar 6 can pass location-plate 3 from perforation 8 under the control of stepper motor;
The height of described location-plate 3 is greater than 500mm, and the axis of described standard reinforcing bar 6 and the distance of pedestal 12 upper surface are greater than 500mm;
Described control Displaying Meter 16 is commercially available prod (prior art), can the operation of control step motor, and shows the displacement of sliding bottom, and the model of producing as Beijing North light century Instrument Ltd. is SC101 type controllor for step-by-step motor.
A detection method for reinforced concrete protective layer measuring instrument or slab thickness measuring instrument, comprises the following steps:
One, erecting equipment
Equipment comprises pedestal 12, location-plate 3, measuring position plate 7, stepper motor 1, leading screw 10 and sliding bottom 14, the both sides of pedestal 12 are equipped with stepper motor 1 and tailstock 11 respectively, one end of leading screw 10 is connected with the output shaft of stepper motor 1, the other end is fixed on tailstock 11 through bearing, sliding bottom 14 leading screw 10 is equipped with, pedestal 12 is provided with guide rail 13, the dop of sliding bottom 14 bottom is placed in the sliding tray of guide rail, form sliding bottom before guide rail, after slide construction, between sliding bottom 14 and stepper motor 1, vertical location-plate 3 is housed on pedestal 12, leading screw is vertical with location-plate 3, sliding bottom 14 is provided with the measuring position plate 7 parallel with location-plate 3, the standard reinforcing bar 6 of level measuring position plate 7 is equipped with through fixed support 5, the vertical round tangent plane 6a of standard bar cross section is parallel with the front surface 3a of location-plate 3, stepper motor 1 is connected with control Displaying Meter 16 through cable 17,
Described sliding bottom 14 is equipped with and measures plate panel seat 15, the bottom of measuring position plate 7 is vertically contained in through set screw 4 to be measured on plate panel seat 15; The relative position of measuring position plate 7 and location-plate 3 is adjusted by set screw 4; Measure plate panel seat 15 through the first backup plate 9 on sliding bottom 14;
Described location-plate 3 and measuring position plate 7 are all the square plate structures be made up of marble slab, location-plate 3 has the perforation 8 corresponding with fixed support 5 and standard reinforcing bar 6, fixed support 5 and standard reinforcing bar 6 can pass location-plate 3 from perforation 8 under the control of stepper motor;
The height of described location-plate 3 is greater than 500mm, and the axis of described standard reinforcing bar 6 and the distance of pedestal 12 upper surface are greater than 500mm;
Described location-plate 3 is provided with horizontally disposed photoelectric sensor (not providing in figure) at perforation 8 place, and photoelectric sensor is connected with control Displaying Meter 16, and the line of induction position of photoelectric sensor is horizontally set on the vertical plane at front surface 3a place of location-plate 3;
Two, zero-bit is measured in adjustment
Start stepper motor 1, drive leading screw 10 reverse rotation, thus drive the measuring position plate 7 that is contained on sliding bottom 14 and standard reinforcing bar 6 to move to the direction of location-plate 3, fixed support 5 and standard reinforcing bar 6 pass from the perforation 8 location-plate 3, when the vertical round tangent plane 6a of standard bar cross section overlaps with the front surface 3a of location-plate 3, photoelectric sensor sends position signalling, control step motor 1 stops the rotation, now, the front surface 3a of stationary positioned plate 3 and standard reinforcing bar 6 plane tangent, this position is as the measurement zero-bit of standard thickness layer; During practical operation, if the front surface 3a of location-plate 3 and standard reinforcing bar 6 surface not tangent, then manual motor, with the position of 0.01mm step distance adjustment measuring position plate 7 relative positioning plate 3, make front surface 3a and standard reinforcing bar 6 plane tangent of location-plate 3, redefine null positions, obtain the measurement zero-bit of standard thickness layer;
Three, detect
Probe 19 measuring surface of instrument 18 to be measured is placed on perforation 8 place of location-plate 3, just to standard reinforcing bar 6, operate apparatus measures program to be measured, the zero-bit of instrument to be measured is reset and revises, start to measure, during measurement, step pitch and the translational speed of stepper motor are set, measuring position plate 7 is moved to the direction away from location-plate 3, thus the air layer thickness changed between the front surface 3a of the location-plate 3 and vertical round tangent plane 6a of standard reinforcing bar 6 xsect, the mobile umber of pulse that stepper motor sends is recorded by controlling Displaying Meter 16, obtain the air layer thickness value needed, the i.e. standard thickness value of more than 0.01mm arbitrary interval, now instrument 18 synchronization implementation to be measured is measured, display measurement value, the difference of instrument 18 displayed value more to be measured and standard thickness value, the precision can evaluating tested instrument is good and bad, realize the detection to instrument to be measured.
Described instrument to be measured 18 is reinforced concrete protective layer measuring instrument or slab thickness measuring instrument; the vertical round tangent plane 6a of described standard reinforcing bar 6 xsect relative to the parallel distance of the front surface 3a of location-plate 3 as the standard thickness value detecting reinforced concrete protective layer measuring instrument precision, the front surface 3a of location-plate 3 relative to the parallel distance of measuring position plate 7 rear surface as the standard thickness value of slab thickness measuring instrument precision.
Can clearly be found out by above-mentioned situation, the location-plate made using rectangle marble slab of the utility model is as the positioning datum of device, the rectangle measuring position plate arrangement in parallel that marble slab is made, exceed the region of pedestal table top 500mm, formed nonmagnetic, the air layer of even density, air layer then between two plates constitutes natural in magnetic field layer, instead of the hybrid standard layer be made up of other materials flaggy and air layer, decrease the magnetic of standard thickness layer, distance between the air layer thickness formed and two parallel plates is as the standard thickness value detecting slab thickness measuring instrument accuracy of instrument.The measuring position plate of relative positioning plate parallel movement apparatus; the standard thickness value of different size can be produced; realizing measurement range is 0mm ~ 500mm; minimum step is spaced apart 0.01mm; the limits of error reach the standard thickness value of 0.2mm; this is that prior art is beyond one's reach; and this apparatus structure is novel unique; advantages of simple, easily produces, easy to operate; substantially increase the detection efficiency of reinforced concrete protective layer measuring instrument and slab thickness measuring instrument; easy to use, effective, there is good Social and economic benef@.
Claims (4)
1. a reinforced concrete protective layer measuring instrument and slab thickness measuring instrument pick-up unit, comprise pedestal, location-plate, measuring position plate, stepper motor, leading screw and sliding bottom, it is characterized in that, the both sides of pedestal (12) are equipped with stepper motor (1) and tailstock (11) respectively, one end of leading screw (10) is connected with the output shaft of stepper motor (1), the other end is fixed on tailstock (11) through bearing, sliding bottom (14) leading screw (10) is equipped with, pedestal (12) is provided with guide rail (13), the dop of sliding bottom (14) bottom is placed in the sliding tray of guide rail, form sliding bottom before guide rail, after slide construction, between sliding bottom (14) and stepper motor (1), vertical location-plate (3) is housed on pedestal (12), leading screw is vertical with location-plate (3), sliding bottom (14) is provided with the measuring position plate (7) parallel with location-plate (3), the standard reinforcing bar (6) of level measuring position plate (7) is equipped with through fixed support (5), the vertical round tangent plane (6a) of standard bar cross section is parallel with the front surface (3a) of location-plate (3), stepper motor (1) is connected with control Displaying Meter (16) through cable (17).
2. reinforced concrete protective layer measuring instrument according to claim 1 and slab thickness measuring instrument pick-up unit; it is characterized in that; described sliding bottom (14) is equipped with and measures plate panel seat (15), the bottom of measuring position plate (7) is vertically contained in through set screw (4) to be measured on plate panel seat (15).
3. reinforced concrete protective layer measuring instrument according to claim 1 and slab thickness measuring instrument pick-up unit; it is characterized in that; described location-plate (3) and measuring position plate (7) are all the square plate structures be made up of marble slab, location-plate (3) have the perforation (8) corresponding with fixed support (5) and standard reinforcing bar (6).
4. reinforced concrete protective layer measuring instrument according to claim 1 and slab thickness measuring instrument pick-up unit; it is characterized in that; the height of described location-plate (3) is greater than 500mm, and the axis of described standard reinforcing bar (6) and the distance of pedestal (12) upper surface are greater than 500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420784679.3U CN204269067U (en) | 2014-12-12 | 2014-12-12 | A kind of reinforced concrete protective layer measuring instrument and slab thickness measuring instrument pick-up unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420784679.3U CN204269067U (en) | 2014-12-12 | 2014-12-12 | A kind of reinforced concrete protective layer measuring instrument and slab thickness measuring instrument pick-up unit |
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| Publication Number | Publication Date |
|---|---|
| CN204269067U true CN204269067U (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420784679.3U Expired - Fee Related CN204269067U (en) | 2014-12-12 | 2014-12-12 | A kind of reinforced concrete protective layer measuring instrument and slab thickness measuring instrument pick-up unit |
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| Country | Link |
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| CN (1) | CN204269067U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359391A (en) * | 2014-12-12 | 2015-02-18 | 张卫东 | Detecting device for reinforced concrete protective layer measurer and floor thickness measurer |
| CN110595402A (en) * | 2019-07-25 | 2019-12-20 | 上海市质量监督检验技术研究院 | Error detection and calibration device and method for floor thickness gauge |
-
2014
- 2014-12-12 CN CN201420784679.3U patent/CN204269067U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359391A (en) * | 2014-12-12 | 2015-02-18 | 张卫东 | Detecting device for reinforced concrete protective layer measurer and floor thickness measurer |
| CN104359391B (en) * | 2014-12-12 | 2017-01-25 | 张卫东 | Detecting device for reinforced concrete protective layer measurer and floor thickness measurer |
| CN110595402A (en) * | 2019-07-25 | 2019-12-20 | 上海市质量监督检验技术研究院 | Error detection and calibration device and method for floor thickness gauge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20161212 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |