CN113252444B - New building material detection device - Google Patents
New building material detection device Download PDFInfo
- Publication number
- CN113252444B CN113252444B CN202110531159.6A CN202110531159A CN113252444B CN 113252444 B CN113252444 B CN 113252444B CN 202110531159 A CN202110531159 A CN 202110531159A CN 113252444 B CN113252444 B CN 113252444B
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- fixedly connected
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- connecting block
- bottom plate
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- 239000004566 building material Substances 0.000 title claims abstract description 26
- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 239000004035 construction material Substances 0.000 claims 5
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 3
- 238000010009 beating Methods 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000011384 asphalt concrete Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002986 polymer concrete Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/48—Investigating hardness or rebound hardness by performing impressions under impulsive load by indentors, e.g. falling ball
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a new building material detection device in the technical field of detection of building materials, which comprises a bottom plate, wherein the upper end of the bottom plate is fixedly connected with a support frame, and the upper end of the support frame is fixedly connected with a knocking device; the lower end of the bottom plate is fixedly connected with the circumference of the supporting leg and is fixedly connected with a lifting device; the clamping device is fixedly connected to the lower end of the bottom plate, and the invention has simple structure and low manufacturing cost, and can fix building materials only by simple operation.
Description
Technical Field
The invention relates to the technical field of detection of building materials, in particular to a detection device for a new building material.
Background
Building materials are various materials used in construction engineering, and the building materials are various and are roughly classified into: inorganic materials including metallic materials (including ferrous and nonferrous materials) and non-metallic materials (such as natural stone, sintered products, cement, concrete, silicate products, etc.), organic materials including plant materials, synthetic polymer materials (including plastics, paint, adhesives) and asphalt materials, composite materials including asphalt concrete, polymer concrete, etc. are generally compounded by inorganic and non-metallic materials and organic materials, and the new building material needs to be tested for multiple times before being put into use on a large scale to ensure the use safety.
However, when the hardness of the building material is detected, the hardness of the building material is tested by holding the building material by hands, so that the building material is broken when the building material is knocked, and the broken building material can cause certain injury to operators.
Therefore, the invention provides a new building material detection device to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide a new building material detection device for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the new building material detection device comprises a bottom plate, wherein the upper end of the bottom plate is fixedly connected with a support frame, and the upper end of the support frame is fixedly connected with a knocking device; the lower end of the bottom plate is fixedly connected with the circumferential surface of the supporting leg, and the lifting device is fixedly connected with the circumferential surface of the supporting leg; the lower end of the bottom plate is fixedly connected with a clamping device.
As a further scheme of the invention: the knocking device comprises a base, base lower extreme and support frame fixed connection, base upper end fixedly connected with first motor, the play axle end fixedly connected with carousel of first motor, carousel side fixedly connected with fixed axle, fixed axle periphery rotates and is connected with the rocker, the one end that the fixed axle was kept away from to the rocker rotates and is connected with the push rod, sliding connection between push rod and the support frame, push rod lower extreme fixedly connected with beats the head, during operation, through starting first motor, at this moment makes the carousel rotate, then drives the rocker under the effect of fixed axle and moves, and then drives the push rod and move in the support frame, at this moment will make to beat the head and remove, when beating the head downwardly moving, just so reached the purpose of beating.
As still further aspects of the invention: the guide groove is formed in the side end face of the support frame, the guide rod is connected in the guide groove in a sliding mode, the guide rod is fixedly connected with the push rod, and when the support frame is in operation, the push rod can be stably moved under the action of the guide groove and the guide rod, and the support frame cannot deviate.
As still further aspects of the invention: the lifting device comprises a fixed plate, fixed plate upper end fixedly connected with second motor, second motor upper end fixedly connected with first gear, first gear engagement has the second gear, fixedly connected with screw thread section of thick bamboo in the second gear, rotate between screw thread section of thick bamboo and the fixed plate and be connected, screw thread section of thick bamboo internal thread is connected with the threaded rod, threaded rod upper end fixedly connected with movable plate, sliding connection between movable plate and the supporting leg, movable plate upper end fixedly connected with ejector pad, during operation, through starting the second motor, at this moment under the effect of second motor drive first gear rotate, and then drive with first gear engagement's second gear rotate, at this moment will make the screw thread section of thick bamboo rotate to make the threaded rod with screw thread section of thick bamboo threaded connection remove, and then drive the movable plate and slide on the supporting leg, also can drive the ejector pad at this moment and remove.
As still further aspects of the invention: the thread cylinder and the threaded rod are triangular in thread shape, and when the self-locking device is in operation, the threaded rod can be stably fixed at one place under the self-locking of the triangular thread because the thread cylinder and the threaded rod are triangular in thread shape.
As still further aspects of the invention: the clamping device comprises a connecting shaft, a second connecting block is fixedly connected to the circumferential surface of the connecting shaft, a sleeve is rotationally connected to the second connecting block, a telescopic rod is slidably connected to the sleeve, a spring is fixedly connected to the upper end of the telescopic rod, the upper end of the spring is fixedly connected with the sleeve, a third connecting block is rotationally connected to the lower end of the telescopic rod, a rotating rod is fixedly connected to the front end of the third connecting block, and a wedge block is fixedly connected to the lower end of the rotating rod; the utility model discloses a telescopic handle structure, including bottom plate, connecting axle, connecting block, telescopic link, clamping block, telescopic link, supporting axle, connecting block and connecting block.
As still further aspects of the invention: the inclined plane of seting up around the ejector pad is parallel with the inclined plane of wedge, during operation, because the inclined plane of ejector pad is parallel with the inclined plane of wedge, is convenient for promote the wedge at this moment.
As still further aspects of the invention: the wedge block, the rotating rod, the supporting shaft, the first connecting block and the clamping blocks are uniformly distributed on one circle of the connecting shaft, and can clamp the periphery of an article simultaneously during operation, so that the article can be stably clamped.
Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
through under dwang, the grip block, first connecting block, the wedge, square hole, the back shaft, the second connecting block, the sleeve, a spring, the telescopic link, third connecting block and connecting axle's cooperation, when the ejector pad upwards moves, at this moment will extrude the wedge to both sides remove, then just make the dwang rotate under the effect of back shaft, and then drive first connecting block and rotate, at this moment, will make the grip block carry out the centre gripping article, because grip block and first connecting block rotate and are connected, can make the grip block remain vertical state throughout, can increase the area of contact between grip block and the article like this, thereby can be stable fixed article, just so solved tradition when carrying out hardness test, need the manual work to carry out the problem of fixed building material, great improvement the protection to the staff.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of the portion A of FIG. 1 according to the present invention;
FIG. 3 is a schematic view of the right-side cross-section of the present invention;
FIG. 4 is an enlarged schematic view of the portion B of FIG. 3 according to the present invention;
FIG. 5 is an enlarged schematic view of the portion C of FIG. 3 according to the present invention;
fig. 6 is an enlarged schematic view of the portion D of fig. 3 according to the present invention.
In the figure: 1-bottom plate, 2-support frame, 3-knocking device, 301-carousel, 302-knocking head, 303-first motor, 304-base, 305-fixed axle, 306-rocker, 307-push rod, 308-guide bar, 309-guide slot, 4-clamping device, 401-rotating rod, 402-clamping block, 403-first connecting block, 404-wedge, 405-square hole, 406-supporting shaft, 407-second connecting block, 408-sleeve, 409-spring, 410-telescopic link, 411-third connecting block, 412-connecting shaft, 5-lifting device, 501-second motor, 502-push block, 503-moving plate, 504-fixed plate, 505-first gear, 506-second gear, 507-threaded rod, 508-threaded cylinder, 6-supporting leg.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 6, in an embodiment of the invention, a new building material detection device comprises a bottom plate 1, wherein the upper end of the bottom plate 1 is fixedly connected with a support frame 2, and the upper end of the support frame 2 is fixedly connected with a knocking device 3; the lower end of the bottom plate 1 is fixedly connected with the circumference surface of the supporting leg 6 and is fixedly connected with the lifting device 5; the lower end of the bottom plate 1 is fixedly connected with a clamping device 4.
The knocking device 3 comprises a base 304, the lower end of the base 304 is fixedly connected with a support frame 2, the upper end of the base 304 is fixedly connected with a first motor 303, the output shaft end of the first motor 303 is fixedly connected with a rotary table 301, the side end of the rotary table 301 is fixedly connected with a fixed shaft 305, the circumferential surface of the fixed shaft 305 is rotationally connected with a rocker 306, one end of the rocker 306 far away from the fixed shaft 305 is rotationally connected with a push rod 307, the push rod 307 is in sliding connection with the support frame 2, and the lower end of the push rod 307 is fixedly connected with a knocking head 302. The guide slot 309 has been seted up to support frame 2 side terminal surface, and sliding connection has guide bar 308 in the guide slot 309, and fixed connection between guide bar 308 and the push rod 307 can make the stable removal of push rod 307, can not take place the skew under the effect of guide slot 309 and guide bar 308 during operation.
The lifting device 5 comprises a fixed plate 504, the upper end of the fixed plate 504 is fixedly connected with a second motor 501, the upper end of the second motor 501 is fixedly connected with a first gear 505, the first gear 505 is meshed with a second gear 506, a threaded cylinder 508 is fixedly connected in the second gear 506, the threaded cylinder 508 is rotationally connected with the fixed plate 504, a threaded rod 507 is connected in the threaded cylinder 508, the upper end of the threaded rod 507 is fixedly connected with a movable plate 503, the movable plate 503 is slidingly connected with a supporting leg 6, the upper end of the movable plate 503 is fixedly connected with a push block 502, and in operation, the second motor 501 is started, at the moment, the first gear 505 is driven to rotate under the action of the first motor 303, and then the second gear 506 meshed with the first gear 505 is driven to rotate, at the moment, the threaded cylinder 508 is driven to rotate, the threaded rod 507 in threaded connection with the threaded cylinder 508 is driven to move, and then the movable plate 503 is driven to slide on the supporting leg 6, and at the moment, the push block 502 is also driven to move; the thread cylinder 508 and the thread of the threaded rod 507 are triangular, and when the self-locking device works, the threaded rod 507 can be stably fixed at one place under the self-locking of the triangular thread because the thread cylinder 508 and the thread of the threaded rod 507 are triangular.
The clamping device 4 comprises a connecting shaft 412, a second connecting block 407 is fixedly connected to the circumferential surface of the connecting shaft 412, a sleeve 408 is rotatably connected to the second connecting block 407, a telescopic rod 410 is slidably connected to the sleeve 408, a spring 409 is fixedly connected to the upper end of the telescopic rod 410, the upper end of the spring 409 is fixedly connected with the sleeve 408, a third connecting block 411 is rotatably connected to the lower end of the telescopic rod 410, a rotating rod 401 is fixedly connected to the front end of the third connecting block 411, and a wedge block 404 is fixedly connected to the lower end of the rotating rod 401; the upper end face of the bottom plate 1 is provided with a square hole 405, a supporting shaft 406 is fixedly connected in the square hole 405, the supporting shaft 406 is rotationally connected with a rotating rod 401, the front end of the rotating rod 401 is fixedly connected with a first connecting block 403, the first connecting block 403 is rotationally connected with a clamping block 402, when the device works, through the movement of a push block 502, a wedge block 404 is extruded to move to two sides, the rotating rod 401 can be rotated under the action of the supporting shaft 406, meanwhile, a telescopic rod 410 can slide in a sleeve 408 under the action of a connecting shaft 412, a second connecting block 407 and a third connecting block 411, and then the clamping block 402 is driven to move under the action of the first connecting block 403, so that the clamping of an article can be achieved under the action of the clamping block 402; the inclined surfaces formed on the periphery of the push block 502 are parallel to the inclined surfaces of the wedge block 404, and when the push block is in operation, the wedge block 404 is conveniently pushed because the inclined surfaces of the push block 502 are parallel to the inclined surfaces of the wedge block 404; wedge 404, dwang 401, back shaft 406, first connecting block 403 and clamping block 402 evenly distributed are in connecting axle 412 a week, and during operation can reach and carry out the centre gripping simultaneously around the article, just so can reach stable centre gripping article.
The working principle of the invention is as follows:
when the device is used, the device is placed at a required place, then a building material is placed in the middle of the bottom plate 1, then the second motor 501 is started, at the moment, the first gear 505 is driven to rotate under the action of the second motor 501, then the second gear 506 meshed with the first gear 505 is driven to rotate, at the moment, the threaded cylinder 508 is driven to rotate, so that the threaded rod 507 in threaded connection with the threaded cylinder 508 moves, then the movable plate 503 is driven to slide on the supporting leg 6, at the moment, the push block 502 is driven to move, along with the movement of the push block 502, the wedge block 404 is extruded to move by the push block 502, then the rotating rod 401 is driven to rotate under the action of the supporting shaft 406, and then the first connecting block 403 is driven to rotate, at the moment, the clamping block 402 clamps an article, and as the clamping block 402 is connected with the first connecting block 403 in a rotating way, the vertical state can be kept all the time, so that the contact area between the clamping block 402 and the article can be increased, and thus the building material 303 can be stably fixed, then the first motor 303 is driven to slide on, at the moment, the first motor is driven to move, then the first motor is driven to move, at the moment, the pivot rod 302 is driven to move under the action of the supporting frame 302, and then the pivot rod 302 is driven to move under the action of the supporting frame 2, and the pivot rod 302 is driven to move when the pivot, and the pivot rod 302 is driven to move down; when the building material is not clamped after the detection, the second motor 501 is started, so that the second motor 501 is reversed, and the pushing block 502 is driven to move downwards, and the telescopic rod 410 can be contracted towards the sleeve 408 under the action of the second connecting block 407, the connecting shaft 412, the third connecting block 411 and the spring 409, so that the rotating rod 401 can rotate outwards, and the clamping block 402 is not used for clamping the building material.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. New building material detection device, including bottom plate (1), its characterized in that: the upper end of the bottom plate (1) is fixedly connected with a supporting frame (2), and the upper end of the supporting frame (2) is fixedly connected with a knocking device (3); the lower end of the bottom plate (1) is fixedly connected with the circumference of the supporting leg (6) and is fixedly connected with the lifting device (5); the lower end of the bottom plate (1) is fixedly connected with a clamping device (4);
the lifting device (5) comprises a fixed plate (504), the upper end of the fixed plate (504) is fixedly connected with a second motor (501), the upper end of the second motor (501) is fixedly connected with a first gear (505), the first gear (505) is meshed with a second gear (506), a threaded cylinder (508) is fixedly connected in the second gear (506), the threaded cylinder (508) is rotationally connected with the fixed plate (504), a threaded rod (507) is connected in the threaded cylinder (508), the upper end of the threaded rod (507) is fixedly connected with a movable plate (503), the movable plate (503) is in sliding connection with a supporting leg (6), and the upper end of the movable plate (503) is fixedly connected with a pushing block (502);
the clamping device (4) comprises a connecting shaft (412), a second connecting block (407) is fixedly connected to the circumferential surface of the connecting shaft (412), a sleeve (408) is rotationally connected to the second connecting block (407), a telescopic rod (410) is slidably connected to the sleeve (408), a spring (409) is fixedly connected to the upper end of the telescopic rod (410), the upper end of the spring (409) is fixedly connected with the sleeve (408), a third connecting block (411) is rotationally connected to the lower end of the telescopic rod (410), a rotating rod (401) is fixedly connected to the front end of the third connecting block (411), and a wedge block (404) is fixedly connected to the lower end of the rotating rod (401); square hole (405) have been seted up to bottom plate (1) up end, square hole (405) internal fixation has back shaft (406), back shaft (406) are connected with dwang (401) rotation, dwang (401) front end fixedly connected with first connecting block (403), first connecting block (403) internal fixation has grip block (402).
2. The new construction material detection device according to claim 1, wherein: the knocking device (3) comprises a base (304), base (304) lower extreme and support frame (2) fixed connection, base (304) upper end fixedly connected with first motor (303), the play axle end fixedly connected with carousel (301) of first motor (303), carousel (301) side fixedly connected with fixed axle (305), fixed axle (305) circumference rotates and is connected with rocker (306), rocker (306) are kept away from the one end rotation of fixed axle (305) and are connected with push rod (307), sliding connection between push rod (307) and support frame (2), push rod (307) lower extreme fixedly connected with knocks first (302).
3. The new construction material detection device according to claim 2, wherein: the side end face of the support frame (2) is provided with a guide groove (309), a guide rod (308) is connected in a sliding manner in the guide groove (309), and the guide rod (308) is fixedly connected with the push rod (307).
4. A new construction material detection apparatus according to claim 3, wherein: the thread shapes of the thread cylinder (508) and the threaded rod (507) are triangle shapes.
5. The new construction material detection device according to claim 4, wherein: inclined surfaces formed in the periphery of the pushing block (502) are parallel to the inclined surfaces of the wedge-shaped block (404).
6. The new construction material detection device according to claim 4, wherein: the wedge-shaped blocks (404), the rotating rod (401), the supporting shaft (406), the first connecting blocks (403) and the clamping blocks (402) are uniformly distributed on the periphery of the connecting shaft (412).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110531159.6A CN113252444B (en) | 2021-05-16 | 2021-05-16 | New building material detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110531159.6A CN113252444B (en) | 2021-05-16 | 2021-05-16 | New building material detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113252444A CN113252444A (en) | 2021-08-13 |
| CN113252444B true CN113252444B (en) | 2024-02-06 |
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| CN202110531159.6A Active CN113252444B (en) | 2021-05-16 | 2021-05-16 | New building material detection device |
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| CN211758600U (en) * | 2019-11-08 | 2020-10-27 | 江苏鑫世丰技术产权交易有限公司 | Clamping device for drilling of building materials |
| CN212180462U (en) * | 2020-04-21 | 2020-12-18 | 吕洲杰 | Building concrete quality detection device |
| CN212646309U (en) * | 2020-07-20 | 2021-03-02 | 江苏辉通检测有限公司 | Clamp for geotechnical cloth tensile test |
| CN112082864A (en) * | 2020-09-13 | 2020-12-15 | 张瑞麟 | Building quality detects uses compression testing machine |
| CN213121402U (en) * | 2020-09-17 | 2021-05-04 | 无锡市江淮建材科技有限公司 | Tensile property detection device for synthetic new material |
| CN112161887A (en) * | 2020-09-24 | 2021-01-01 | 朱爱国 | Building material hardness detection device |
| CN112798451A (en) * | 2020-12-28 | 2021-05-14 | 苏州俐兆铭光科技有限公司 | Automatic change test equipment |
| CN112362686A (en) * | 2021-01-14 | 2021-02-12 | 潍坊凯速建筑科技有限公司 | Building material frost resistance check out test set |
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