CN114544406B - Test device and test method for measuring concrete strength - Google Patents
Test device and test method for measuring concrete strength Download PDFInfo
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- CN114544406B CN114544406B CN202210178477.3A CN202210178477A CN114544406B CN 114544406 B CN114544406 B CN 114544406B CN 202210178477 A CN202210178477 A CN 202210178477A CN 114544406 B CN114544406 B CN 114544406B
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- 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
- G01N3/52—Investigating hardness or rebound hardness by measuring extent of rebound of a striking body
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention relates to the field of concrete strength detection, in particular to a test device and a test method for measuring concrete strength, wherein the test device comprises a mounting bar, a fixing plate, a test block fixing assembly, a reset assembly, a pressure test assembly and the like; fixed mounting has the fixed plate on the installation strip pole, and the symmetry is provided with test block fixed subassembly on the installation strip pole, and the subassembly that resets is located on the test block fixed subassembly, and pressure test subassembly fixed mounting is on the installation strip pole. According to the tooth number of the movable rack, the movable rack can only drive the driving gear and the upper device thereof to rotate ninety degrees clockwise, so that the placing frame drives the concrete test piece to rotate ninety degrees, the digital rebound instrument is convenient to detect the other surface of the concrete test piece, and the aim of improving the concrete compressive strength detection accuracy is fulfilled.
Description
Technical Field
The invention relates to the field of concrete strength detection, in particular to a test device and a test method for measuring concrete strength.
Background
The concrete material is an indispensable material in the construction process of the constructional engineering, and the requirements of national important constructional engineering project on the concrete strength standard are very high, so that the detection of the concrete strength is necessary, and the concrete strength detection technology commonly used in China is divided into nondestructive detection and micro-damage detection, wherein the nondestructive detection mainly comprises a rebound method, a combination method, an ultrasonic method and the like; the micro-damage detection mainly comprises a core drilling method, a pulling-out method, a post-anchoring method, a direct pulling-out method and the like.
The method has the advantages of simple operation, faster process, lower cost and easy sample collection, but when the concrete surface hardness and the strength quality have certain differences, the condition of misalignment of the detection result can be caused in the process of strength detection, the detection result has larger error compared with other detection means, the other detection means have higher accuracy, but the defects of more procedures, inconvenient operation and the like.
Disclosure of Invention
The invention aims to provide a test device and a test method for measuring concrete strength, which can enable concrete sampling to be more dispersed and uniform, detect multiple surfaces of a concrete test piece, detect different positions of the concrete test piece and achieve the aim of improving the detection accuracy of the concrete compressive strength, so as to solve the problems of relatively large error, more working procedures of other detection means and inconvenient operation of the conventional rebound method detection means in the background art.
The technical implementation scheme of the invention is as follows: the utility model provides a test device and test method for measuring concrete intensity, including installation bar, the fixed plate, test block fixed subassembly, reset subassembly, pressure test subassembly, rotating assembly, spacing subassembly, pushing component and prop out the separation subassembly, fixed mounting has the fixed plate on the installation bar, the symmetry is provided with test block fixed subassembly on the installation bar, reset subassembly locates on the test block fixed subassembly, pressure test subassembly fixed mounting is on the installation bar, be provided with rotating assembly on the fixed plate, spacing subassembly locates on the pressure test subassembly, pushing component sets up in installation bar one side, prop out the separation subassembly and slidingly connect on the installation bar.
More preferably, the test block fixing assembly comprises a guide rail frame, a limiting plate, first limiting springs, push bars and a placing frame, wherein the guide rail frame is symmetrically arranged on the installation bar, the limiting plate is connected to the guide rail frame in a sliding mode, a pair of first limiting springs are fixedly connected to the limiting plate, one ends of the first limiting springs are connected with the guide rail frame, the push bars are fixedly connected to the top of the limiting plate, the push bars are in contact with the guide rail frame, a bearing on the fixing plate is connected with the placing frame in an interference fit mode, and the placing frame is in contact with the limiting plate.
More preferably, the reset assembly comprises a fixed bar, reset springs and a pushing bar, the fixed bar is symmetrically and fixedly connected on the placing frame, the top surface of the fixed bar is connected with a pair of reset springs, one ends of the two reset springs on the same side are fixedly connected with the pushing bar together, and the pushing bar is contacted with the placing frame.
More preferably, the pressure test assembly comprises an electric push rod, a slotting guide bar, a guide rod, a sliding plate, a first compression spring, a push rod, a guide frame, a digital resiliometer, a movable plate and a driving spring, wherein the electric push rod is fixedly arranged on the installation bar, one end of a telescopic shaft of the electric push rod is welded with the slotting guide bar, one side of the installation bar is fixedly connected with the guide rod, the sliding plate is connected with the guide rod in a sliding manner, the first compression spring is fixedly connected with the sliding plate, one end of the first compression spring is connected with the installation bar, the push rod is welded on the sliding plate, the guide frame is fixedly connected with the digital resiliometer in a sliding manner, the movable plate is connected on the guide frame in a sliding manner, and the driving spring is connected between the movable plate and the digital resiliometer.
More preferably, the rotating assembly comprises an overrun clutch, a driving gear, a fixed guide bar, a movable rack, a second compression spring, a push plate and a wedge block, wherein the overrun clutch is arranged below the placement frame, the driving gear is fixedly arranged on the overrun clutch, the fixed guide bar is fixedly arranged on the fixed plate, the movable rack is connected onto the fixed guide bar in a sliding manner, the second compression spring is connected onto the movable rack, one end of the second compression spring is connected with the fixed guide bar, the push plate is connected onto the movable rack in a manner of elastic hinge connection, and the wedge block is fixedly arranged on the grooved guide bar.
More preferably, the limiting assembly comprises an L-shaped guide bar, a limiting rod and a second limiting spring, wherein the L-shaped guide bar is welded on one side of the guide bar, the limiting rod is connected to the L-shaped guide bar in a sliding mode, the limiting rod is in contact with the guide bar, the second limiting spring is connected to the limiting rod, and one end of the second limiting spring is fixedly connected with the L-shaped guide bar.
More preferably, the pushing assembly comprises a guide rod, an inclined pushing plate, a third compression spring and a strip-shaped plate, wherein the guide rod is welded on one side of the installation strip rod, the inclined pushing plate is connected onto the guide rod in a sliding mode, the third compression spring is fixedly connected onto the inclined pushing plate, one end of the third compression spring is fixedly connected with the guide rod, and the strip-shaped plate is welded on one side of the placement frame.
More preferably, the stretching and separating assembly comprises a movable frame, a fourth compression spring, a stretching frame, a movable block, a fifth compression spring, a driving frame, a sixth compression spring and a lower pressing plate, wherein the movable frame is connected to the installation bar in a lifting manner, the movable frame is connected with the fourth compression spring, one end of the fourth compression spring is fixedly connected with the installation bar, the stretching frame is fixedly connected to the movable frame and is in contact with the pushing bar, the stretching frame is in contact with the limiting rod, the movable block is connected to the guide rod in a lifting manner, the bottom surface of the movable block is welded with the fifth compression spring, one end of the fifth compression spring is fixedly connected with the guide rod, the driving frame is connected to the movable block in a sliding manner, the sixth compression spring is fixedly connected to the driving frame, one end of the sixth compression spring is connected with the movable block, the lower pressing plate is welded to the driving frame, and the lower pressing plate is in contact with the stretching frame.
Compared with the prior art, the invention has the following advantages:
the digital resiliometer is pushed to move in the direction away from the sliding plate by the driving spring, so that the digital resiliometer is in contact with the surface of the concrete test piece, the digital resiliometer tests the concrete test piece, the rebound value can be identified on the corresponding scale of the digital resiliometer, the data can directly reflect the hardness of the concrete, and the detector can accurately calculate the strength of the concrete according to the rebound value.
According to the tooth number of the movable rack, the movable rack can only drive the driving gear and the upper device thereof to rotate ninety degrees clockwise, so that the placing frame drives the concrete test piece to rotate ninety degrees, the digital rebound instrument is convenient to detect the other surface of the concrete test piece, and the aim of improving the concrete compressive strength detection accuracy is fulfilled.
The inclined plane pushing plate is pushed to move towards the direction far away from the placing frame by the strip-shaped plate, and the inclined plane pushing plate pushes the pushing rod and the upper device of the pushing rod to move towards the direction close to the mounting strip rod, so that the digital resiliometer can detect different positions of the concrete test piece.
Drawings
Fig. 1 is a schematic perspective view of a first embodiment of the present invention.
Fig. 2 is a schematic perspective view of a second embodiment of the present invention.
Fig. 3 is a schematic perspective view of a third embodiment of the present invention.
FIG. 4 is a schematic perspective view of a test block fixing assembly according to the present invention.
Fig. 5 is a schematic perspective view of a reset assembly according to the present invention.
FIG. 6 is a schematic view of a portion of a pressure testing assembly according to the present invention.
FIG. 7 is a schematic perspective view of a pressure testing assembly according to the present invention.
Fig. 8 is a schematic view of a part of a rotary assembly according to the present invention.
Fig. 9 is a schematic perspective view of a limiting assembly according to the present invention.
Fig. 10 is a schematic perspective view of a first portion of the distracting assembly of the present invention.
Fig. 11 is a schematic perspective view of a second portion of the distracting assembly of the present invention.
Meaning of reference numerals in the drawings: 1. the device comprises a mounting bar rod, 2, a fixed plate, 3, a test block fixing component, 31, a guide rail frame, 32, a limit plate, 33, a first limit spring, 34, a push bar, 35, a placement frame, 4, a reset component, 41, a fixed bar, 42, a reset spring, 43, a push bar, 5, a pressure test component, 51, an electric push bar, 52, a slotted guide bar, 53, a guide bar, 54, a sliding plate, 55, a first compression spring, 56, a push bar, 57, a guide frame, 58, a digital rebound instrument, 59, a movable plate, 510, a driving spring, 6, a rotating component, 61, an overrunning clutch, 62, a driving gear, 63, a fixed guide bar, 64, a movable rack, 65, a second compression spring, 66, a push plate, 67, a wedge block, 7, a limit component, 71, an L-shaped guide bar, 72, a limit bar, 73, a second limit spring, 8, a push component, 81, a guide bar, 82, a push plate, 83, a third compression spring, 84, a bar, a 9, a spreading separation component, 91, a movable frame, 92, a fourth compression spring, a movable frame, a 94, a fifth compression spring, a compression frame, a 95, a lower compression frame, a 96, a sixth compression frame, a compression frame, and a compression frame.
Detailed Description
In order to make the object technical scheme and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Examples: the utility model provides a test device and test method for measuring concrete intensity, as shown in fig. 1-11, including installation bar 1, fixed plate 2, test block fixed subassembly 3, reset subassembly 4, pressure test subassembly 5, rotating assembly 6, spacing subassembly 7, pushing component 8 and strut separation subassembly 9, fixed mounting has fixed plate 2 on the installation bar 1, the symmetry is provided with the test block fixed subassembly 3 that is used for pressing from both sides the concrete test piece on the installation bar 1, be used for locating the reset subassembly 4 that detects the concrete test piece and push out upwards on the test block fixed subassembly 3, be used for carrying out the pressure test subassembly 5 fixed mounting on the installation bar 1 of compressive strength detection to the concrete test piece, be provided with rotating assembly 6 on the fixed plate 2, spacing subassembly 7 is located on the pressure test subassembly 5, pushing component 8 sets up in installation bar 1 one side, strut separation subassembly 9 sliding connection is on installation bar 1.
The test block fixing assembly 3 comprises a guide rail frame 31, a limiting plate 32, a first limiting spring 33, a push rod 34 and a placing frame 35, wherein the guide rail frame 31 is symmetrically arranged on the installation rod 1, the limiting plate 32 is connected to the guide rail frame 31 in a sliding mode, the limiting plate 32 is used for clamping a concrete test piece, the limiting plate 32 is fixedly connected with a pair of first limiting springs 33, one end of the first limiting spring 33, far away from the limiting plate 32, is connected with the guide rail frame 31, the push rod 34 is fixedly connected to the top of the limiting plate 32, the push rod 34 is in contact with the guide rail frame 31, a bearing on the fixing plate 2 is connected with the placing frame 35 for placing the concrete test piece in an interference fit mode, and the placing frame 35 is in contact with the limiting plate 32.
The reset assembly 4 comprises a fixed bar 41, reset springs 42 and a pushing bar 43, the fixed bar 41 is symmetrically and fixedly connected to the placement frame 35, a pair of reset springs 42 are connected to the top surface of the fixed bar 41, the pushing bar 43 is fixedly connected to one ends of the two reset springs 42 on the same side far away from the fixed bar 41, the pushing bar 43 is in contact with the placement frame 35, and the pushing bar 43 is used for pushing out the detected concrete test piece upwards.
The pressure testing assembly 5 comprises an electric push rod 51, a slotted guide strip 52, a guide rod 53, a sliding plate 54, a first compression spring 55, a push rod 56, a guide frame 57, a digital rebound instrument 58, a movable plate 59 and a driving spring 510, wherein the electric push rod 51 is fixedly arranged on the installation strip rod 1, one end of a telescopic shaft of the electric push rod 51 is welded with the slotted guide strip 52, one side of the installation strip rod 1 is fixedly connected with the guide rod 53, the sliding plate 53 is connected with the sliding plate 54 in a sliding manner, the first compression spring 55 far away from the sliding plate 54 is connected with the installation strip rod 1, the push rod 56 is welded on the sliding plate 54 far away from the guide rod 53, the guide frame 57 is fixedly connected on the sliding plate 54, the digital rebound instrument 58 is used for detecting a concrete testing piece, the movable plate 59 is connected on the guide frame 57 in a sliding manner, and the driving spring 510 is connected between the movable plate 59 and the digital rebound instrument 58.
The rotating assembly 6 comprises an overrunning clutch 61, a driving gear 62, a fixed guide bar 63, a movable rack 64, a second compression spring 65, a push plate 66 and a wedge block 67, wherein the overrunning clutch 61 is arranged below the placement frame 35 close to the fixed plate 2, the driving gear 62 is fixedly arranged on the overrunning clutch 61, the fixed guide bar 63 is fixedly arranged on the fixed plate 2, the movable rack 64 is connected with the fixed guide bar 63 in a sliding manner, the movable rack 64 is connected with the second compression spring 65, one end of the second compression spring 65 far away from the movable rack 64 is connected with the fixed guide bar 63, the movable rack 64 far away from the fixed guide bar 63 is connected with the push plate 66 in a mode of elastic hinge connection, the wedge block 67 is fixedly arranged on the grooved guide bar 52 far away from the electric push rod 51, and the wedge block 67 is used for pushing the push plate 66 and the upper device of the push plate 66 to move towards the direction far away from the sliding plate 54.
The limiting assembly 7 comprises an L-shaped guide bar 71, a limiting rod 72 and a second limiting spring 73, wherein the L-shaped guide bar 71 is welded on one side of the guide bar 53, the limiting rod 72 is connected to the L-shaped guide bar 71 in a sliding mode, the limiting rod 72 is in contact with the guide bar 53, the limiting rod 72 is used for clamping the sliding plate 54, the second limiting spring 73 is connected to the limiting rod 72, and one end of the second limiting spring 73 is fixedly connected with the L-shaped guide bar 71.
The pushing assembly 8 comprises a guide rod 81, an inclined pushing plate 82, a third compression spring 83 and a strip-shaped plate 84, wherein the guide rod 81 is welded on one side of the installation strip rod 1, the inclined pushing plate 82 is connected onto the guide rod 81 in a sliding manner, the third compression spring 83 is fixedly connected onto the inclined pushing plate 82, one end of the third compression spring 83 far away from the inclined pushing plate 82 is fixedly connected with the guide rod 81, and the strip-shaped plate 84 is welded on one side of the placement frame 35.
The spreading and separating assembly 9 comprises a movable frame 91, a fourth compression spring 92, a spreading frame 93, a movable block 94, a fifth compression spring 95, a driving frame 96, a sixth compression spring 97 and a lower pressing plate 98, wherein the movable frame 91 is connected to the mounting bar 1 in a lifting manner, the movable frame 91 is connected with the fourth compression spring 92, one end of the fourth compression spring 92 far away from the movable frame 91 is fixedly connected with the mounting bar 1, the movable frame 91 is fixedly connected with the spreading frame 93, the spreading frame 93 is in contact with the pushing bar 34, the spreading frame 93 is used for pushing the pushing bar 34 and an upper device thereof to move relatively, the spreading frame 93 is in contact with the limiting rod 72, the spreading frame 93 is also used for pushing the limiting rod 72 to move towards a direction far away from the guide rod 53, the movable block 94 is connected to the guide rod 81 in a lifting manner, the bottom surface of the movable block 94 is welded with the fifth compression spring 95, one end of the fifth compression spring 95 far away from the movable block 94 is fixedly connected with the guide rod 81, the driving frame 96 is slidingly connected to the movable block 94, the sixth compression spring 97 is fixedly connected to the driving frame 96, one end of the sixth compression spring 97 far away from the driving frame 96 is fixedly connected with the sixth compression spring 97, the sixth compression spring 97 is far away from the movable block 96 is contacted with the lower pressing plate 98, and the lower pressing plate 98 is in contact with the lower pressing plate 98, and the upper pressing plate 98 is in contact with the moving plate 98.
When the compressive strength of the concrete needs to be detected, a detecting person firstly samples a plurality of surfaces of the concrete wall, the sampled concrete is manufactured into a concrete test piece, then the detecting person places the test piece in the placing frame 35, the concrete test piece can push the limiting plate 32 to move relatively, and then the compressed first limiting spring 33 resets to drive the limiting plate 32 to move relatively, and the limiting plate 32 moves relatively to clamp the concrete test piece. The concrete test piece will push the push bar 43 downward and the return spring 42 is compressed.
The electric putter 51 shrink is manually controlled to the inspector, electric putter 51 shrink drives fluting gib block 52 and wedge 67 down to move, wedge 67 can be with push pedal 66 contact, wedge 67 promotes push pedal 66 down swing, then wedge 67 and push pedal 66 separation, drive push pedal 66 up swing through the elasticity hinge and reset, fluting gib block 52 can be with fly leaf 59 contact, fluting gib block 52 promotes fly leaf 59 to keep away from the fly leaf 54 direction motion, fly leaf 59 promotes digital resiliometer 58 to keep away from the fly leaf 54 direction through actuating spring 510, make digital resiliometer 58 and concrete test piece surface contact each other, digital resiliometer 58 detects concrete test piece, the rebound value can be identified on the corresponding scale of digital resiliometer 58, this data can directly reflect the hardness of concrete, the inspector carries out accurate calculation to concrete strength according to the size of rebound value.
Then, the inspector manually controls the electric push rod 51 to extend, the electric push rod 51 extends to drive the slotted guide strip 52 and the wedge block 67 to move upwards, the slotted guide strip 52 pushes the movable plate 59 to move towards the direction close to the sliding plate 54, the movable plate 59 pulls the digital rebound device 58 to move towards the direction close to the sliding plate 54 through the driving spring 510, the wedge block 67 contacts with the push plate 66 again, the wedge block 67 pushes the push plate 66 and the upper device thereof to move towards the direction far away from the sliding plate 54, the movable rack 64 drives the driving gear 62 and the upper device thereof to rotate clockwise, according to the tooth number of the movable rack 64, the movable rack 64 can only drive the driving gear 62 and the upper device thereof to rotate clockwise for ninety degrees, so that the placing frame 35 drives the concrete test piece to rotate for ninety degrees, and the digital rebound device 58 is convenient for detecting the other surface of the concrete test piece. When the wedge 67 is separated from the push plate 66, the compressed second compression spring 65 is reset to drive the movable rack 64 and the device thereon to move toward the direction approaching the sliding plate 54, the movable rack 64 drives the driving gear 62 and the overrunning clutch 61 to rotate counterclockwise, and the overrunning clutch 61 rotates counterclockwise without transmitting power to the placement frame 35. The above operation is repeated, and the inspector controls the electric push rod 51 to stretch three times again, and the digital resiliometer 58 inspects four sides of the concrete test piece.
When the strip-shaped plate 84 contacts with the inclined plane pushing plate 82 again, the strip-shaped plate 84 pushes the inclined plane pushing plate 82 to move away from the placing frame 35 again, the inclined plane pushing plate 82 pushes the driving frame 96 and the lower pressing plate 98 to move away from the placing frame 35, so that the lower pressing plate 98 pushes the supporting frame 93 to move downwards, the supporting frame 93 pushes the pushing bar 34 and the device thereon to move relatively, the limiting plate 32 does not clamp the concrete test piece any more, the compressed reset spring 42 resets to drive the pushing bar 43 to move upwards, and the pushing bar 43 pushes the detected concrete test piece upwards. Simultaneously, the supporting frame 93 can push the limiting rod 72 to move towards the direction far away from the guide rod 53, the limiting rod 72 does not clamp the sliding plate 54 any more, the compressed first compression spring 55 resets to drive the sliding plate 54 and the upper device thereof to move towards the direction far away from the installation bar 1 to reset, the guide frame 57 is separated from the driving frame 96, the compressed fifth compression spring 95 resets to drive the movable block 94 and the upper device thereof to move upwards to reset, the lower pressing plate 98 is separated from the supporting frame 93, the compressed fourth compression spring 92 resets to drive the movable frame 91 and the upper device thereof to move upwards to reset, and then all parts of the equipment are reset. Repeating the operation, and detecting the strength of the sampled concrete test block.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are all within the protection of the present invention.
Claims (1)
1. A test device for measuring concrete strength, its characterized in that: the device comprises a mounting bar, a fixing plate, a test block fixing assembly, a resetting assembly, a pressure testing assembly, a rotating assembly, a limiting assembly, a pushing assembly and a spreading and separating assembly, wherein the fixing plate is fixedly arranged on the mounting bar;
the test block fixing assembly comprises a guide rail frame, a limiting plate, first limiting springs, push bars and a placing frame, wherein the guide rail frame is symmetrically arranged on a mounting bar, the guide rail frame is connected with the limiting plate in a sliding mode, the limiting plate is fixedly connected with a pair of first limiting springs, one ends of the first limiting springs are connected with the guide rail frame, the push bars are fixedly connected to the top of the limiting plate, the push bars are contacted with the guide rail frame, a bearing on the fixing plate is connected with the placing frame in an interference fit mode, and the placing frame is contacted with the limiting plate;
the reset assembly comprises a fixed bar, reset springs and a pushing bar, the fixed bar is symmetrically and fixedly connected on the placement frame, the top surface of the fixed bar is connected with a pair of reset springs, one ends of the two reset springs on the same side are fixedly connected with the pushing bar together, and the pushing bar is contacted with the placement frame;
the pressure testing assembly comprises an electric push rod, a slotted guide bar, a guide rod, a sliding plate, a first compression spring, a push rod, a guide frame, a digital resiliometer, a movable plate and a driving spring, wherein the electric push rod is fixedly arranged on an installation bar;
the rotating assembly comprises an overrunning clutch, a driving gear, a fixed guide bar, a movable rack, a second compression spring, a push plate and a wedge block, wherein the overrunning clutch is arranged below the placement frame, the driving gear is fixedly arranged on the overrunning clutch, the fixed guide bar is fixedly arranged on the fixed plate, the movable rack is connected onto the fixed guide bar in a sliding manner, the second compression spring is connected onto the movable rack, one end of the second compression spring is connected with the fixed guide bar, the push plate is connected onto the movable rack in a mode of elastic hinge connection, and the wedge block is fixedly arranged on the slotted guide bar;
the limiting assembly comprises an L-shaped guide bar, a limiting rod and a second limiting spring, wherein one side of the guide bar is welded with the L-shaped guide bar, the L-shaped guide bar is connected with the limiting rod in a sliding mode, the limiting rod is in contact with the guide bar, the limiting rod is connected with the second limiting spring, and one end of the second limiting spring is fixedly connected with the L-shaped guide bar;
the pushing assembly comprises a guide rod, an inclined pushing plate, a third compression spring and a strip-shaped plate, wherein the guide rod is welded on one side of the installation strip rod, the inclined pushing plate is connected onto the guide rod in a sliding mode, the third compression spring is fixedly connected onto the inclined pushing plate, one end of the third compression spring is fixedly connected with the guide rod, and the strip-shaped plate is welded on one side of the placement frame;
the stretching and separating assembly comprises a movable frame, a fourth compression spring, a stretching frame, a movable block, a fifth compression spring, a driving frame, a sixth compression spring and a lower pressing plate, wherein the movable frame is connected to a mounting bar in a lifting mode, the fourth compression spring is connected to the movable frame, one end of the fourth compression spring is fixedly connected to the mounting bar, the stretching frame is fixedly connected to the movable frame and is in contact with the pushing bar, the stretching frame is in contact with the limiting rod, the movable block is connected to the guide rod in a lifting mode, the fifth compression spring is welded to the bottom surface of the movable block, one end of the fifth compression spring is fixedly connected with the guide rod, the driving frame is connected to the movable block in a sliding mode, the sixth compression spring is fixedly connected to the driving frame, one end of the sixth compression spring is connected to the movable block, the lower pressing plate is welded to the driving frame, and the lower pressing plate is in contact with the stretching frame.
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| CN115326616B (en) * | 2022-10-13 | 2022-12-27 | 广东环达工程检测有限公司 | Road and bridge concrete structure detection device and detection method thereof |
| CN116448557B (en) * | 2023-04-11 | 2023-10-31 | 深圳市名锦坊电子科技有限公司 | LED driving power supply testing machine |
| CN117074220B (en) * | 2023-10-17 | 2023-12-26 | 上海贝恒人居建设集团南通有限公司 | Intensity testing device for large-volume concrete prefabricated part |
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| KR20020087900A (en) * | 2002-09-12 | 2002-11-23 | 서 치 호 | The line hitting rebound test method for nondestructive test of concrete compressive strength |
| CN111610087A (en) * | 2020-06-04 | 2020-09-01 | 钟永辉 | Hardness test equipment after concrete brick shaping |
| CN214251880U (en) * | 2020-11-09 | 2021-09-21 | 孙红梅 | Concrete strength detector for detecting quality of constructional engineering |
| CN214251884U (en) * | 2021-01-04 | 2021-09-21 | 江苏恒信交通工程试验检测有限公司 | Concrete strength testing arrangement for highway engineering |
| CN214309997U (en) * | 2021-01-19 | 2021-09-28 | 云南金驰建筑工程质量检测有限公司 | Resilience method concrete compressive strength detection device |
| CN113884400A (en) * | 2021-09-16 | 2022-01-04 | 熊亮 | Reciprocating type panel toughness detection device for municipal works building |
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| CN114544406A (en) | 2022-05-27 |
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