CN114226273A - Thickness measuring device for building construction material detection - Google Patents
Thickness measuring device for building construction material detection Download PDFInfo
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- CN114226273A CN114226273A CN202111643011.8A CN202111643011A CN114226273A CN 114226273 A CN114226273 A CN 114226273A CN 202111643011 A CN202111643011 A CN 202111643011A CN 114226273 A CN114226273 A CN 114226273A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/04—Sorting according to size
- B07C5/10—Sorting according to size measured by light-responsive means
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Abstract
The application discloses building construction material detects uses thickness measurement device, including casing and adjusting device, mobile device and measuring device, adjusting device includes inside groove, adapter sleeve, side frame, microcontroller, power, fly leaf, spacing groove, guide post, extends frame, bottom, intercommunication groove and extending groove, the inside equal fixed connection adapter sleeve of both ends lateral wall of casing, the inside sliding connection fly leaf of adapter sleeve, the inside of casing has seted up the inside groove. This application drives the transmission shaft through micro motor and rotates, and the transmission shaft drives first gear revolve, and first gear drives the second gear revolve that the meshing is connected, and the second gear drives the fixed axle and rotates, and the fixed axle drives third gear revolve, and the third gear drives the rack board removal that the meshing is connected, and the rack board drives the fly leaf and removes along adapter sleeve and inside groove, and the fly leaf passes through the spacing groove and slides along the guide post, and the top of fly leaf drives the digging arm and removes, conveniently adapts to the measurement of different thickness materials.
Description
Technical Field
The application relates to the technical field of building construction, in particular to a thickness measuring device for detecting building construction materials.
Background
The building construction refers to production activities in the engineering construction implementation stage, is the construction process of various buildings, and also can be a process of changing various lines on a design drawing into a real object at a specified place. The method comprises foundation engineering construction, main structure construction, roofing engineering construction, decoration engineering construction and the like. The site of the construction work is called a "construction site" or "job site", also called a worksite.
The current in-process at construction, generally need detect and measure construction material, screens the material that does not conform to standard thickness, and general thickness measurement device needs manual adjustment to measure the distance, and is inconvenient to measure the material in batches, and general measuring device is inconvenient compares measuring thickness to influence measuring accuracy. Therefore, a thickness measuring device for detecting a construction material is proposed to solve the above problems.
Disclosure of Invention
The utility model provides a building construction material detects uses thickness measurement device is used for solving current in-process at the construction in this embodiment, generally need detect and measure the construction material, screens to the material that does not conform to standard thickness, and general thickness measurement device needs manual adjustment to measure the distance, and is inconvenient to measuring the material in batches, and general measuring device is inconvenient compares measuring thickness to influence the problem of measuring accuracy.
According to one aspect of the present application, there is provided a thickness measuring device for building construction material detection, including a housing, and an adjusting device, a moving device, and a measuring device;
the adjusting device comprises an inner groove, a connecting sleeve, a side frame, a microcontroller, a power supply, a movable plate, a limiting groove, a guide post, an extending frame, a bottom cover, a communicating groove and an extending groove, wherein the connecting sleeve is fixedly connected inside the side walls at two ends of the shell, the movable plate is connected inside the connecting sleeve in a sliding manner, and the inner groove is formed in the shell;
the moving device comprises a micro motor, a transmission shaft, a first gear, a second gear, a fixed shaft, a third gear, a rack plate and a side groove, wherein the side wall of one end of the shell is fixedly connected with a side frame, the micro motor is arranged in the side frame, and the output end of the micro motor is fixedly connected with the transmission shaft;
measuring device includes handle, scale bar, display screen, infrared distance measuring sensor, digging arm, tablet, tip and fixed plate, the one end lateral wall fixed connection fixed plate of casing, top one side fixed connection digging arm of fly leaf, the one end fixed connection tip of digging arm.
Furthermore, the inside of the side wall of the shell is rotatably connected with a fixed shaft, and the outer side wall of one end of the fixed shaft is fixedly connected with a second gear and a third gear.
Furthermore, one end of the transmission shaft is fixedly connected with a first gear, and the first gear is in meshed connection with a second gear.
Further, the third gear is meshed with a rack plate, the rack plate is fixedly connected in a side groove, and the side groove is formed in the side wall of one end of the movable plate.
Further, the bottom end of the shell is fixedly connected with an extension frame, the bottom of the extension frame is in threaded connection with a bottom cover through a bolt, and a communication groove is formed in the center of the bottom cover.
Further, the handle is installed to the one end lateral wall of extending the frame, the extending groove has been seted up to the inside of extending the frame, the center of extending groove, intercommunication groove and adapter sleeve is coaxial.
Furthermore, the inside fixed connection scale strip of one end lateral wall of fly leaf, the display screen is installed to the top outside of fly leaf.
Further, the internally mounted of digging arm has the tablet, the tablet is connected with the cooperation of infrared distance measuring sensor, infrared distance measuring sensor installs the top lateral wall at the casing.
Furthermore, a limiting groove is formed in the movable plate, a guide post is arranged in the limiting groove, and the guide post is fixedly connected to the center of the inside of the shell.
Further, the internally mounted of side frame has microcontroller and power, the equal electric connection micro motor of microcontroller and power, display screen and infrared distance measuring sensor.
Through the above-mentioned embodiment of this application, adopted adjusting device, mobile device and measuring device, solved current in-process at the construction, need detect and measure construction material usually, filter to the material that is not conform to standard thickness, general thickness measurement device needs manual adjustment to measure the distance, and is inconvenient to measuring the material in batches, and general measuring device is inconvenient compares measuring thickness to the influence measures the problem of accuracy.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic overall perspective view of an embodiment of the present application;
FIG. 2 is a schematic overall structure diagram of an embodiment of the present application;
fig. 3 is an enlarged view of a portion a in fig. 2 according to an embodiment of the present disclosure.
Fig. 4 is a schematic position diagram of a rack plate, a side groove and a movable plate according to an embodiment of the present application.
FIG. 5 is a schematic diagram of the second gear, the stationary shaft, and the third gear according to an embodiment of the present application.
Fig. 6 is a schematic circuit diagram according to an embodiment of the present application.
In the figure: 1. a housing; 2. an inner tank; 3. connecting sleeves; 4. a side frame; 5. a microcontroller; 6. a power source; 7. a micro motor; 8. a drive shaft; 9. a first gear; 10. a second gear; 11. a fixed shaft; 12. a third gear; 13. a rack plate; 14. a side groove; 15. a movable plate; 16. a limiting groove; 17. a guide post; 18. an extension frame; 19. a bottom cover; 20. a communicating groove; 21. an extension groove; 22. a handle; 23. a scale bar; 24. a display screen; 25. an infrared ranging sensor; 26. a movable arm; 27. an induction plate; 28. a tip; 29. and (7) fixing the plate.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The thickness measuring device in the present embodiment may be suitable for use in thickness measurement of various building construction materials, for example, the following thickness measuring device is provided in the present embodiment, and the thickness measuring device in the present embodiment may be used to perform thickness measurement on the following wall panels.
A heat-insulating sound-insulating composite wallboard for building construction comprises a composite wallboard body, wherein the composite wallboard body is composed of a decorative panel layer, a metal external wallboard, a fireproof, damp-proof and sound-insulating board, a non-porous gypsum board, a perforated sound-absorbing gypsum board, suction cotton, a steel structure keel frame and a polyurethane foam material heat-insulating board; the inner side of the composite wallboard body is provided with a perforated sound-absorbing gypsum board, sound-absorbing holes are uniformly distributed on the surface of the perforated sound-absorbing gypsum board, the aperture of each sound-absorbing hole is-mm, the sound-absorbing holes have excellent suction capacity, and the sound wave reflection can be effectively controlled; the outer side surface of the perforated sound-absorbing gypsum board is bonded with suction cotton, the outer side surface of the suction cotton is bonded with a non-porous gypsum board, the outer side surface of the non-porous gypsum board is connected with a steel structure keel frame, the steel structure keel frame is composed of a plurality of light steel cross keels and light steel vertical keels which are vertically welded, the light steel cross keels and the light steel vertical keels are all in an I-shaped steel structure, a heat-insulating board embedding groove is defined between the light steel cross keels and the light steel vertical keels, a polyurethane foam material heat-insulating board is filled in the heat-insulating board embedding groove, the heat conductivity coefficient of the polyurethane foam material heat-insulating board is low, and the heat-insulating effect is good; the steel construction keel frame lateral surface connects the sclausura gypsum board, and sclausura gypsum board lateral surface bonds the dampproofing acoustic celotex board of fire prevention, and dampproofing acoustic celotex board lateral surface bonding metal side fascia of fire prevention, metal side fascia lateral surface connect the decorative panel layer.
The sound absorption non-woven fabrics are fixed on the inner side surface of the perforated sound absorption gypsum board, so that dust falling on the inner side surface of the perforated sound absorption gypsum board can be prevented.
The perforated sound-absorbing gypsum board and the non-porous gypsum board both adopt high-strength fiber paper-faced gypsum boards, have high structural strength and still have good strength even after perforation.
The suction cotton is preferably gradient suction cotton, meets the selection standard of indoor materials, has larger suction bandwidth, and better retains the advantage of polyester fiber suction cotton.
The fireproof and damp-proof sound-proof board is preferably an ultra-fine glass wool sound-proof board, has high melting point, is incombustible, has good damp-proof effect, completely meets the requirements of environmental protection, fire prevention, moisture prevention and sound insulation, and has a fire-proof grade reaching A level.
The bonding in the composite wallboard body can adopt a hot-pressing bonding mode or adhesive bonding.
Of course, the thickness measuring method can also be used for measuring the thickness of other building construction materials. Here, description is not repeated, and the following describes a thickness measuring apparatus according to an embodiment of the present application.
Referring to fig. 1 to 6, a thickness measuring device for detecting a building construction material includes a housing 1, an adjusting device, a moving device, and a measuring device;
the adjusting device comprises an inner groove 2, a connecting sleeve 3, a side frame 4, a microcontroller 5, a power supply 6, a movable plate 15, a limiting groove 16, a guide post 17, an extending frame 18, a bottom cover 19, a communicating groove 20 and an extending groove 21, the connecting sleeve 3 is fixedly connected inside the side walls of the two ends of the shell 1, the movable plate 15 is connected inside the connecting sleeve 3 in a sliding mode, and the inner groove 2 is formed in the shell 1;
the moving device comprises a micro motor 7, a transmission shaft 8, a first gear 9, a second gear 10, a fixed shaft 11, a third gear 12, a rack plate 13 and a side groove 14, wherein the side wall of one end of the shell 1 is fixedly connected with a side frame 4, the micro motor 7 is installed inside the side frame 4, and the output end of the micro motor 7 is fixedly connected with the transmission shaft 8;
the measuring device comprises a handle 22, a scale bar 23, a display screen 24, an infrared distance measuring sensor 25, a movable arm 26, an induction plate 27, a pointed end 28 and a fixed plate 29, wherein the fixed plate 29 is fixedly connected with the side wall of one end of the shell 1, the movable arm 26 is fixedly connected with one side of the top end of the movable plate 15, and the pointed end 28 is fixedly connected with one end of the movable arm 26.
The micro motor is started through the microcontroller, the micro motor drives the transmission shaft to rotate, the transmission shaft drives the first gear to rotate, the first gear drives the second gear which is connected in a meshed mode to rotate, the second gear drives the fixed shaft to rotate, the fixed shaft drives the third gear to rotate, the third gear drives the rack plate which is connected in a meshed mode to move, the rack plate drives the movable plate to move along the connecting sleeve and the inner groove, the movable plate slides along the guide post through the limiting groove, the top end of the movable plate drives the movable arm to move, and measurement of materials with different thicknesses is conveniently adapted.
A fixed shaft 11 is rotatably connected to the inside of the side wall of the housing 1, and the outer side wall of one end of the fixed shaft 11 is fixedly connected with a second gear 10 and a third gear 12; one end of the transmission shaft 8 is fixedly connected with a first gear 9, and the first gear 9 is meshed with a second gear 10; the third gear 12 is meshed with a connecting rack plate 13, the rack plate 13 is fixedly connected in a side groove 14, and the side groove 14 is formed in the side wall of one end of a movable plate 15; the bottom end of the shell 1 is fixedly connected with an extension frame 18, the bottom of the extension frame 18 is in threaded connection with a bottom cover 19 through a bolt, and a communication groove 20 is formed in the center of the bottom cover 19; a handle 22 is installed on the outer side wall of one end of the extension frame 18, an extension groove 21 is formed in the extension frame 18, and the extension groove 21, the communication groove 20 and the center of the connecting sleeve 3 are coaxial; a scale bar 23 is fixedly connected inside the side wall at one end of the movable plate 15, and a display screen 24 is installed on the outer side of the top of the movable plate 15; an induction plate 27 is arranged inside the movable arm 26, the induction plate 27 is connected with an infrared distance measuring sensor 25 in a matching way, and the infrared distance measuring sensor 25 is arranged on the side wall of the top of the shell 1; a limiting groove 16 is formed in the movable plate 15, a guide post 17 is arranged in the limiting groove 16, and the guide post 17 is fixedly connected to the center of the inside of the shell 1; the internally mounted of side frame 4 has microcontroller 5 and power 6, the equal electric connection micro motor 7 of microcontroller 5 and power 6, display screen 24 and infrared distance measuring sensor 25.
When the device is used, firstly, all electrical components in the device are externally connected with a control switch and a power supply 6, then, a handheld handle 22 is used for driving an extension frame 18 and a shell 1 to move, according to the thickness of a material to be measured, a micro motor 7 is started through a microcontroller 5, the micro motor 7 drives a transmission shaft 8 to rotate, the transmission shaft 8 drives a first gear 9 to rotate, the first gear 9 drives a second gear 10 in meshed connection to rotate, the second gear 10 drives a fixed shaft 11 to rotate, the fixed shaft 11 drives a third gear 12 to rotate, the third gear 12 drives a rack plate 13 in meshed connection to move, the rack plate 13 drives a movable plate 15 to move along a connecting sleeve 3 and an inner groove 2, the movable plate 15 slides along a guide column 17 through a limiting groove 16, the top end of the movable plate 15 drives a movable arm 26 to move, the device is convenient to adapt to the measurement of materials with different thicknesses, and a fixed plate 29 is abutted against the bottom of the material, restart micro motor 7, the tip 28 that moves movable arm 26 one end is driven in the fly leaf 15 resets and supports tightly at the top of material, through scale bar 23, the convenience reads thickness data, carry out the distance response through tablet 27 and infrared distance measuring sensor 25, handle and show on display screen 24 through microcontroller 5, thereby make things convenient for reading of thickness data, compare through the scale on data on the display screen 24 and the scale on the scale bar 23, improve measuring accuracy nature.
The application has the advantages that:
1. the micro motor is started through the microcontroller, the micro motor drives the transmission shaft to rotate, the transmission shaft drives the first gear to rotate, the first gear drives the second gear which is connected in a meshed mode to rotate, the second gear drives the fixed shaft to rotate, the fixed shaft drives the third gear to rotate, the third gear drives the rack plate which is connected in a meshed mode to move, the rack plate drives the movable plate to move along the connecting sleeve and the inner groove, the movable plate slides along the guide column through the limiting groove, the top end of the movable plate drives the movable arm to move, and measurement of materials with different thicknesses is convenient to adapt;
2. the structure is reasonable, the fixed plate is abutted against the bottom of the material, the micro motor is started again, the movable plate resets to drive the tip at one end of the movable arm to abut against the top of the material, the thickness data are conveniently read through the scale strips, and the sensing plate and the infrared distance measuring sensor are used for sensing the distance;
3. this application is rational in infrastructure, handles and show on the display screen through microcontroller to make things convenient for reading of thickness data, contrast through the scale on data on the display screen and the scale strip, improve measuring accuracy nature.
It is well within the skill of those in the art to implement, without undue experimentation, the present application is not directed to software and process improvements, as they relate to circuits and electronic components and modules.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a building construction material detects uses thickness measurement device which characterized in that: comprises a shell (1), an adjusting device, a moving device and a measuring device;
the adjusting device comprises an inner groove (2), a connecting sleeve (3), a side frame (4), a microcontroller (5), a power supply (6), a movable plate (15), a limiting groove (16), a guide post (17), an extending frame (18), a bottom cover (19), a communicating groove (20) and an extending groove (21), the connecting sleeve (3) is fixedly connected inside the side walls of the two ends of the shell (1), the movable plate (15) is connected inside the connecting sleeve (3) in a sliding mode, and the inner groove (2) is formed inside the shell (1);
the moving device comprises a micro motor (7), a transmission shaft (8), a first gear (9), a second gear (10), a fixed shaft (11), a third gear (12), a rack plate (13) and a side groove (14), wherein the side wall of one end of the shell (1) is fixedly connected with a side frame (4), the micro motor (7) is installed inside the side frame (4), and the output end of the micro motor (7) is fixedly connected with the transmission shaft (8);
measuring device includes handle (22), scale bar (23), display screen (24), infrared distance measuring sensor (25), digging arm (26), tablet (27), tip (28) and fixed plate (29), one end lateral wall fixed connection fixed plate (29) of casing (1), top one side fixed connection digging arm (26) of digging arm (15), one end fixed connection tip (28) of digging arm (26).
2. The thickness measuring device for building construction material detection according to claim 1, characterized in that: the inner part of the side wall of the shell (1) is rotatably connected with a fixed shaft (11), and the outer side wall of one end of the fixed shaft (11) is fixedly connected with a second gear (10) and a third gear (12).
3. The thickness measuring device for building construction material detection according to claim 1, characterized in that: one end of the transmission shaft (8) is fixedly connected with a first gear (9), and the first gear (9) is meshed with a second gear (10).
4. The thickness measuring device for building construction material detection according to claim 1, characterized in that: third gear (12) meshing connects rack board (13), rack board (13) fixed connection is in side groove (14), side groove (14) are seted up inside the one end lateral wall of fly leaf (15).
5. The thickness measuring device for building construction material detection according to claim 1, characterized in that: the bottom end of the shell (1) is fixedly connected with an extension frame (18), the bottom of the extension frame (18) is in threaded connection with a bottom cover (19) through a bolt, and a communication groove (20) is formed in the center of the bottom cover (19).
6. The thickness measuring device for building construction material detection according to claim 1, characterized in that: handle (22) are installed to the one end lateral wall of extension frame (18), extending groove (21) have been seted up to the inside of extension frame (18), the center of extending groove (21), intercommunication groove (20) and adapter sleeve (3) is coaxial.
7. The thickness measuring device for building construction material detection according to claim 1, characterized in that: the scale bar (23) is fixedly connected to the inner portion of the side wall of one end of the movable plate (15), and a display screen (24) is installed on the outer side of the top of the movable plate (15).
8. The thickness measuring device for building construction material detection according to claim 1, characterized in that: the internally mounted of digging arm (26) has tablet (27), tablet (27) are connected with infrared distance measuring sensor (25) cooperation, the top lateral wall at casing (1) is installed in infrared distance measuring sensor (25).
9. The thickness measuring device for building construction material detection according to claim 1, characterized in that: a limiting groove (16) is formed in the movable plate (15), a guide column (17) is arranged in the limiting groove (16), and the guide column (17) is fixedly connected to the center of the inside of the shell (1).
10. The thickness measuring device for building construction material detection according to claim 1, characterized in that: the interior of side frame (4) is installed microcontroller (5) and power (6), microcontroller (5) and power (6) equal electric connection micro motor (7), display screen (24) and infrared distance measuring sensor (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111643011.8A CN114226273A (en) | 2021-12-29 | 2021-12-29 | Thickness measuring device for building construction material detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111643011.8A CN114226273A (en) | 2021-12-29 | 2021-12-29 | Thickness measuring device for building construction material detection |
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| CN114226273A true CN114226273A (en) | 2022-03-25 |
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| CN202111643011.8A Pending CN114226273A (en) | 2021-12-29 | 2021-12-29 | Thickness measuring device for building construction material detection |
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| US20030009894A1 (en) * | 2000-10-02 | 2003-01-16 | Jiro Yamamoto | Plate thickness inspecting apparatus |
| CN209894092U (en) * | 2019-04-09 | 2020-01-03 | 成都锐欧光学电子有限公司 | Optical lens piece thickness detection device |
| CN211903999U (en) * | 2020-06-04 | 2020-11-10 | 武汉完美几何机电设备有限公司 | Tool for detecting size of stator with equal wall thickness of screw pump |
| CN212227942U (en) * | 2020-06-22 | 2020-12-25 | 吴丽 | Building material detects uses thickness detection device |
| CN212482314U (en) * | 2020-06-11 | 2021-02-05 | 贾太菊 | High-efficient building engineering check out test set |
| CN213377919U (en) * | 2020-09-02 | 2021-06-08 | 王应龙 | Mechanical automation detection device |
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2021
- 2021-12-29 CN CN202111643011.8A patent/CN114226273A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030009894A1 (en) * | 2000-10-02 | 2003-01-16 | Jiro Yamamoto | Plate thickness inspecting apparatus |
| CN209894092U (en) * | 2019-04-09 | 2020-01-03 | 成都锐欧光学电子有限公司 | Optical lens piece thickness detection device |
| CN211903999U (en) * | 2020-06-04 | 2020-11-10 | 武汉完美几何机电设备有限公司 | Tool for detecting size of stator with equal wall thickness of screw pump |
| CN212482314U (en) * | 2020-06-11 | 2021-02-05 | 贾太菊 | High-efficient building engineering check out test set |
| CN212227942U (en) * | 2020-06-22 | 2020-12-25 | 吴丽 | Building material detects uses thickness detection device |
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