CN211954081U - Portal frame type thickness detector with rough surface concrete precast slab - Google Patents
Portal frame type thickness detector with rough surface concrete precast slab Download PDFInfo
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- CN211954081U CN211954081U CN202020671794.5U CN202020671794U CN211954081U CN 211954081 U CN211954081 U CN 211954081U CN 202020671794 U CN202020671794 U CN 202020671794U CN 211954081 U CN211954081 U CN 211954081U
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- 238000005259 measurement Methods 0.000 claims description 10
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- 238000001514 detection method Methods 0.000 abstract description 44
- 238000010276 construction Methods 0.000 description 6
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- 229910000831 Steel Inorganic materials 0.000 description 3
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Abstract
The utility model provides a take portal frame formula thickness detection appearance of coarse surface concrete prefabricated plate, include: the beam assembly is provided with a strip-shaped through groove in the length direction; the two leg assemblies are detachably connected to two ends of the cross beam assembly; the sliding disc assembly is inserted into the strip-shaped through groove and is connected with the strip-shaped through groove in a sliding mode; the reference rod assembly is sleeved on the supporting leg assembly; the detector has a first state and a second state, when the detector is in the first state, the top end face of the reference rod assembly is close to the bottom end face of the sliding disc assembly, when the detector is in the second state, the prefabricated plate is located between the reference rod assembly and the sliding disc assembly, and the height of the sliding disc assembly rising from the first state to the second state is the thickness of the prefabricated plate. The utility model discloses simple structure, low in cost is applicable to the quantitative determination of prefabricated component mill, and can save the manual work by single completion.
Description
Technical Field
The utility model relates to an engineering survey field particularly, relates to a take portal thickness detector of coarse face concrete precast slab.
Background
With the guidance of national policies, the urbanization process of China enters a new stage, and according to the research report on the development of Chinese cities, the urbanization rate of China is improved to 60% in 2020. In the process, in order to relieve the pressure of labor cost rise in the building industry and meet the requirements of gradually improved construction management, resource saving and the like, the application range of the fabricated building is gradually expanded.
In order to improve the integrity, the earthquake resistance and the waterproof performance of the assembled structure and realize the design concept of 'assembling equal cast-in-place', the superposed structure of the horizontal component is researched and developed. Through research, in the current assembly type construction project, the concrete precast slab with the rough surface is the most used precast component with the laminated structure at present.
In engineering practice, the shape, size, appearance quality and assembling construction process of the precast concrete member are the main control points of the engineering construction quality of the prefabricated concrete structure. The control point of the shape and the size is the deviation of the actual size and the design size of the member, whether the deviation is within the allowable deviation range of the design is very important, and the operability of the construction process and the overall performance of the building are involved. However, the thickness detection method of the precast concrete slab with the rough surface is vague in description of the current precast concrete member detection standard and technical specification, and a corresponding detection instrument is not provided.
At present, the thickness detection method of the plate includes ruler amount detection, ultrasonic detection and the like, wherein the ruler amount detection can only measure the side surface of the prefabricated plate through a measuring tape or a caliper to obtain an estimated value of the thickness of the plate, and the measurement error is large; the concrete precast slab with the rough surface is provided with the truss steel bars, the ultrasonic detection results are distorted due to different transmission speeds of sound waves in different media, and the ultrasonic detection cost is high and is not suitable for normalized detection. The thickness allowable deviation of the prefabricated plate type components is regulated to be +/-5 mm by the national current standard 'acceptance standard for construction quality of concrete structure engineering' GB 50204 'and' technical standard for prefabricated concrete construction 'GB/T51231', and the requirements cannot be met by using the traditional detection instrument and the detection method.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a take portal formula thickness detection appearance of coarse surface concrete prefabricated plate realizes taking the high-efficient of coarse surface concrete prefabricated plate thickness to detect, improves the accuracy that takes coarse surface concrete prefabricated plate dimensional deviation to detect, promotes the assembly type building engineering quality.
In order to realize the purpose, the utility model discloses a technical scheme is: a portal thickness detector with rough concrete precast slabs comprises: the beam assembly is provided with a strip-shaped through groove in the length direction; the two leg assemblies are detachably connected to two ends of the beam assembly and are used for supporting the beam assembly; the sliding disc assembly is inserted into the strip-shaped through groove and is connected with the strip-shaped through groove in a sliding mode; the reference rod component is sleeved on the supporting leg component and limited on a certain height; the detector has a first state and a second state, when the detector is in the first state, the top end face of the reference rod assembly is close to the bottom end face of the sliding disc assembly, when the detector is in the second state, the prefabricated plate is located between the reference rod assembly and the sliding disc assembly, and the height of the sliding disc assembly rising from the first state to the second state is the thickness of the prefabricated plate.
As the preferred scheme, the landing leg subassembly includes supporting leg and stop screw, the supporting leg include the telescopic link, set firmly in the crossbeam sleeve pipe on telescopic link top with set firmly in the bottom plate of telescopic link bottom, crossbeam sleeve pipe cover is located crossbeam subassembly tip, just stop screw wears to locate between the two, plays the fixed action.
Preferably, the sliding plate assembly comprises a detection plate and a sliding flange, the detection plate comprises a connecting rod, a heavy hammer and a plate body, the heavy hammer and the plate body are fixedly arranged at the top end and the bottom end of the connecting rod respectively, the sliding flange is sleeved on the connecting rod, and the bottom end face of the sliding flange is abutted to the inner wall of the strip-shaped through groove.
Preferably, the reference rod assembly comprises a reference sleeve and a locking screw, the reference sleeve comprises a sleeve main body and a reference rod fixedly arranged on the side wall of the sleeve main body, the sleeve main body is sleeved on the supporting leg assembly and fixedly connected with the supporting leg assembly through the locking screw, and when the supporting leg assembly is in the second state, the reference rod is close to the bottom end face of the prefabricated slab.
Preferably, the sliding plate assembly is provided with a scale line, and the scale line reads 0 in the first state.
Compared with the prior art, the beneficial effects of the utility model include:
(1) the utility model discloses simple structure, low in cost, the facilitate promotion is applicable to the quantitative determination of prefabricated component mill, and can save the manual work by single completion.
(2) The utility model discloses a landing leg subassembly is extending structure, can satisfy the detection of not co-altitude range prefabricated plate.
(3) The utility model discloses can slide on the coarse surface of prefabricated plate, can carry out some survey, line survey, detection form is abundant.
Drawings
The disclosure of the present invention is explained with reference to the drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the invention. In the drawings, like reference numerals are used to refer to like parts. Wherein:
fig. 1 is a schematic structural diagram of a gantry thickness detector according to an embodiment of the present invention;
FIG. 2 is an exploded view of the gantry thickness gauge according to an embodiment of the present invention;
FIG. 3 is a front view of a gantry thickness gauge according to an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a top view of the gantry thickness gauge according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a leg assembly according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of a slider assembly according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a reference rod assembly according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of the door frame type thickness detector of the embodiment of the present invention when detecting the prefabricated slab;
fig. 10 is a schematic structural view of a gantry type thickness detector for yard inspection according to an embodiment of the present invention;
fig. 11 is a schematic distribution diagram of the detection area of the gantry thickness detector according to the embodiment of the present invention.
Reference numbers in the figures: 1-crossbeam, 101-strip through groove, 102-first through hole, 2-supporting leg, 201-telescopic rod, 202-crossbeam sleeve, 203-second through hole, 204-bottom plate, 3-detection plate, 301-connecting rod, 302-heavy hammer, 303-disc body, 4-sliding flange, 5-limiting screw rod, 6-reference sleeve, 601-sleeve main body, 602-reference rod, 603-third through hole, 7-locking screw, 100-crossbeam assembly, 200-supporting leg assembly, 300-sliding disc assembly, 400-reference rod assembly and 500-prefabricated plate.
Detailed Description
It is easily understood that, according to the technical solution of the present invention, a plurality of alternative structural modes and implementation modes can be proposed by those skilled in the art without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present invention, and should not be considered as limiting or restricting the technical solutions of the present invention in their entirety or in any other way.
An embodiment according to the present invention is shown in conjunction with fig. 1 to 5. A portal thickness detector with rough surface concrete precast slabs comprises a beam assembly 100, a support leg assembly 200, a sliding disc assembly 300 and a reference rod assembly 400, wherein the beam assembly 100 comprises a beam 1, a strip-shaped through groove 101 is formed in the length direction of the beam 1, and the opening direction of the strip-shaped through groove 101 is vertical downward; the number of the leg assemblies 200 is two, and the two leg assemblies 200 are detachably connected to two ends of the cross beam 1 and used for supporting the cross beam assembly 100; the sliding disk assembly 300 is inserted into the strip-shaped through groove 101 and is connected with the strip-shaped through groove in a sliding mode; the reference bar assembly 400 is sleeved on the leg assembly 200 and is limited to a certain height.
Specifically, referring to fig. 4 and 6, the leg assembly 200 includes a support leg 2 and a limit screw 5, wherein the support leg 2 includes an expansion link 201, and a beam sleeve 202 and a bottom plate 204 respectively fixed at the top end and the bottom end of the expansion link 201, and the bottom plate 204 is triangular, so that the detector can be stably erected on the ground. It is understood that the bottom plate 204 may have other shapes such as circular, polygonal, etc. The telescopic link 201 can be manual or electric, so that the detector can be adjusted in height.
Crossbeam 1 tip is located to crossbeam sleeve pipe 202 cover, offers first through-hole 102 at crossbeam 1 both ends, has offered second through-hole 203 on crossbeam sleeve pipe 202 and first through-hole 102 correspond the position, and stop screw 5 runs through the setting between first through-hole 102 and second through-hole 203 for with crossbeam sleeve pipe 202 fixed connection on crossbeam 1, fixed back, crossbeam 1 can not take place to rotate and the displacement of horizontal direction.
Referring to fig. 4 and 7, the sliding tray assembly 300 includes a detection tray 3 and a sliding flange 4, wherein the detection tray 3 includes a connection rod 301, a weight 302 and a tray body 303, the connection rod 301 is inserted into the strip-shaped through slot 101, and the weight 302 and the tray body 303 are respectively located above and below the strip-shaped through slot 101 and are respectively fixedly connected to the top end and the bottom end of the connection rod 301. The bottom end of the tray body 303 is provided with a chamfer, so that the tray body 303 can move on the prefabricated plate 500 during detection. The connecting rod 301 is provided with scale marks, the minimum scale is 1mm, and the reading direction of the scale marks is from top to bottom.
Referring to fig. 2 and 4 again, the sliding flange 4 is sleeved on the connecting rod 301, the sliding flange 4 is a stepped cylindrical structure with a large top and a small bottom, in order to enable the sliding flange 4 to move smoothly on the connecting rod 301, the inner diameter of the central circular hole of the sliding flange 4 is about 2mm larger than the diameter of the connecting rod 301, the lower end of the sliding flange 4 is inserted into the strip-shaped through groove 101, in order to enable the sliding flange 4 to slide smoothly in the strip-shaped through groove 101, the diameter of the lower end of the sliding flange 4 is about 4mm smaller than the width of the strip-shaped through groove 101, and the diameter of the upper end of the sliding flange is larger than the width of the strip-shaped through. During detection, the upper and lower cylindrical joint surfaces of the sliding flange 4 are always abutted against the top end surface of the strip-shaped through groove 101.
Referring to fig. 8, the datum rod assembly includes a datum sleeve 6 and a locking screw 7, the datum sleeve 6 includes a sleeve main body 601 and a datum rod 602 fixedly disposed on a side wall of the sleeve main body 601, the datum rod 602 is in a horizontal state, the sleeve main body 601 is sleeved on the leg assembly 200 and fixedly connected through the locking screw 7, and the height of the datum sleeve 6 can be conveniently adjusted by adjusting the locking screw 7. The end part of the locking screw 7 is butterfly-shaped, so that the locking screw can be screwed up manually.
The initial state and the end state of the detector in the detection process are respectively defined as a first state and a second state, when the detector is in the first state, the top end face of the reference rod 602 is close to the bottom end face of the disc body 303, and at the moment, the scale indicated by the joint of the top end face of the sliding flange 4 and the connecting rod 301 is '0'; when the prefabricated plate 500 is positioned between the reference rod 602 and the tray body 303 in the second state, the bottom end surface of the tray body 303 is close to the top end surface of the prefabricated plate 500, the height of the connecting rod 301 rising from the first state to the second state is the thickness of the prefabricated plate 500, and at this time, the scale indicated by the joint of the top end surface of the sliding flange 4 and the connecting rod 301 is the thickness of the prefabricated plate 500.
It should be understood that the utility model discloses usable grid sensor carries out digital display formula transformation, and the grid sensor is a capacitanc digital sensor, has characteristics small, simple structure, accuracy height, suitability are strong, fast and the consumption is little and with low costs, uses extensively in the electronic measurement technique, such as digital slide caliper just utilizes the transformation that the grid sensor goes on traditional slide caliper.
The utility model also provides a take rough surface concrete precast slab's portal frame formula thickness detector's detection method, use on foretell take rough surface concrete precast slab's portal frame formula thickness detector, this detection method includes following step:
(1) factory calibration, which comprises the following steps:
selecting standard plates with the thicknesses of 10mm, 12mm, 15mm, 18mm and 20mm respectively, and 5 standard plates in total, wherein the standard plates are smooth straight plates, detecting by using a detector, each thickness standard plate is detected for 10 times respectively, the average value of 10 times of detection data is taken as the actual detection value of the standard plate, the thickness of the standard plate is subtracted from the actual detection value to be the measurement deviation of the standard plate, after the thickness of the complete standard plate is detected, the arithmetic average value of the measurement deviations of all the standard plates is taken as the random error of the standard plate, and the height of the reference rod assembly is adjusted according to the random error to eliminate the random error. Such as: and if the random error is-1.2 mm, reducing the height of the reference rod assembly by 1.2mm, and if the random error is 1.2mm, improving the height of the reference rod assembly by 1.2 mm.
(2) And a zero calibration detector, which needs to be calibrated before detection, wherein the locking screw 7 is manually unscrewed, and then the height of the reference rod 602 is adjusted up and down, so that the top end face of the reference rod 602 is close to the bottom end face of the disc body 303, and at the moment, the scale indicated by the joint of the top end face of the sliding flange 4 and the connecting rod 301 is '0'.
(3) The girder assembly is placed over the area to be inspected of the prefabricated panel 500, and the leg assembly 200 is stretched to be supported on the ground.
(4) The height of the reference lever assembly 400 is adjusted by the locking screw 7 such that the top end surface thereof is brought into close proximity with the bottom end surface of the prefabricated panel 500, and the sliding tray assembly 300 is moved such that the bottom end surface thereof is brought into abutment with the top end surface of the prefabricated panel 500.
Referring to fig. 9, the prefabricated panel 500 has a smooth bottom surface and a rough top surface, and the prefabricated panel 500 further has protruding truss reinforcements on the top surface. When the thickness measuring instrument is used for thickness measurement, the reference rod 602 needs to be controlled to be tightly attached to the smooth surface of the prefabricated slab 500, the tray body 303 needs to be tightly attached to the rough surface of the prefabricated slab 500, and when the sliding tray assembly 300 is moved, the detection tray 3 needs to be manually lifted upwards to cross the protruding truss steel bars to reach a detection area.
Referring to fig. 10, when the prefabricated panels 500 are detected in a yard, the detection is performed from the uppermost layer, and after one layer is detected, the prefabricated panels 500 at the uppermost layer are lifted and installed by using lifting equipment, and then the detection of the next layer is performed.
(5) The thickness value of the area of the prefabricated panel 500 is obtained by reading the numerical value of the scale marks provided on the sliding tray assembly 300, that is, the scale marks indicated where the top end surface of the sliding flange 4 meets the connecting rod 301.
(6) And sequentially detecting according to a preset path, wherein the detection mode is point measurement or line measurement, and the area thickness values of a plurality of areas of the prefabricated plate 500 are respectively obtained.
Referring to fig. 11, the default path specifically includes: according to the distribution form of the truss steel bars protruding from the surface of the precast slab 500, that is, along the length direction of the precast slab 500, the precast slab 500 is divided into 5 areas, namely, an area 3, an area 1, an area 2, an area 4, and an area 5, and during detection, the detection is sequentially performed according to the areas 1 to 5. The operation is more convenient according to the detection sequence, and the detection sequence can be arranged according to the actual field situation.
The point measurement comprises the following specific steps: a plurality of points to be measured are preset on the area to be measured, the distances between adjacent points to be measured are equal, for example, one point to be measured is taken every 10cm, and the measurement is sequentially carried out according to the sequence of the points to be measured.
The line measurement comprises the following specific steps: the sliding tray assembly 300 is moved at a constant speed over the area to be detected, and the detection is performed at regular intervals and current data is recorded. During detection, one detector slides the equipment in a detection area and reads scale readings, the other detector records plate thickness data, and the detected area and the time interval selected by each reading need to be determined in advance, for example, one reading is recorded every 2 seconds.
(7) And carrying out arithmetic mean on the thickness values of the plurality of areas to obtain the thickness value of the precast slab 500.
After the detection of the concrete precast slab 500 with the rough surface is finished, assuming that a total of N points to be detected are obtained, the area thickness value of each point to be detectedIs H1、H2、H3······HnBy the formula (H)1+H2+H3+······Hn) and/N, calculating the thickness value of the concrete precast slab with the rough surface 500, comparing the thickness value with a standard value, and judging whether the thickness of the precast slab is qualified.
The technical scope of the present invention is not limited to the content in the above description, and those skilled in the art can make various modifications and alterations to the above embodiments without departing from the technical spirit of the present invention, and these modifications and alterations should fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides a take portal frame formula thickness measurement appearance of coarse surface concrete precast slab which characterized in that includes:
the beam assembly is provided with a strip-shaped through groove in the length direction;
the two leg assemblies are detachably connected to two ends of the beam assembly and are used for supporting the beam assembly;
the sliding disc assembly is inserted into the strip-shaped through groove and is connected with the strip-shaped through groove in a sliding mode;
the reference rod component is sleeved on the supporting leg component and limited on a certain height;
the detector has a first state and a second state, when the detector is in the first state, the top end face of the reference rod assembly is close to the bottom end face of the sliding disc assembly, when the detector is in the second state, the prefabricated plate is located between the reference rod assembly and the sliding disc assembly, and the height of the sliding disc assembly rising from the first state to the second state is the thickness of the prefabricated plate.
2. The door frame type thickness detector according to claim 1, wherein the leg assembly comprises a supporting leg and a limit screw, the supporting leg comprises a telescopic rod, a beam sleeve fixedly arranged at the top end of the telescopic rod, and a bottom plate fixedly arranged at the bottom end of the telescopic rod, the beam sleeve is sleeved at the end of the beam assembly, and the limit screw is arranged between the beam sleeve and the beam sleeve in a penetrating manner to play a role in fixing.
3. The door frame type thickness measuring instrument according to claim 1, wherein the sliding tray assembly comprises a detecting tray and a sliding flange, the detecting tray comprises a connecting rod, a heavy hammer and a tray body, the heavy hammer and the tray body are respectively fixed at the top end and the bottom end of the connecting rod, the sliding flange is sleeved on the connecting rod, and the bottom end surface of the sliding flange abuts against the inner wall of the strip-shaped through slot.
4. The door frame type thickness measuring instrument according to claim 1, wherein the reference rod assembly comprises a reference sleeve and a locking screw, the reference sleeve comprises a sleeve main body and a reference rod fixedly arranged on a side wall of the sleeve main body, the sleeve main body is sleeved on the leg assembly and fixedly connected with the leg assembly through the locking screw, and when the door frame type thickness measuring instrument is in the second state, the reference rod is close to the bottom end face of the prefabricated slab.
5. The door frame type thickness measuring instrument according to claim 1, wherein the sliding tray assembly is provided with a scale mark, and the scale mark in the first state reads "0".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020671794.5U CN211954081U (en) | 2020-04-28 | 2020-04-28 | Portal frame type thickness detector with rough surface concrete precast slab |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020671794.5U CN211954081U (en) | 2020-04-28 | 2020-04-28 | Portal frame type thickness detector with rough surface concrete precast slab |
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| CN211954081U true CN211954081U (en) | 2020-11-17 |
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| CN202020671794.5U Expired - Fee Related CN211954081U (en) | 2020-04-28 | 2020-04-28 | Portal frame type thickness detector with rough surface concrete precast slab |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457877A (en) * | 2020-04-28 | 2020-07-28 | 龙信建设集团有限公司 | Portal frame type thickness detector with rough surface concrete precast slab and detection method thereof |
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2020
- 2020-04-28 CN CN202020671794.5U patent/CN211954081U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457877A (en) * | 2020-04-28 | 2020-07-28 | 龙信建设集团有限公司 | Portal frame type thickness detector with rough surface concrete precast slab and detection method thereof |
| CN111457877B (en) * | 2020-04-28 | 2024-09-06 | 龙信建设集团有限公司 | Portal thickness detector with rough surface concrete precast slab and detection method thereof |
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Granted publication date: 20201117 |