CN109238882B - Concrete strength detection device and detection method thereof - Google Patents
Concrete strength detection device and detection method thereof Download PDFInfo
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- CN109238882B CN109238882B CN201811049189.8A CN201811049189A CN109238882B CN 109238882 B CN109238882 B CN 109238882B CN 201811049189 A CN201811049189 A CN 201811049189A CN 109238882 B CN109238882 B CN 109238882B
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- detection container
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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
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/303—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated only by free-falling weight
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- 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
Abstract
The invention discloses a concrete strength detection device and a concrete strength detection method, wherein the concrete strength detection device comprises a detection container and a concrete test block, the detection container is vertically arranged on the upper surface of the concrete test block through an annular rubber pad which is arranged in a surrounding manner by the opening outline of the detection container, an electric push rod, a blocking cylinder and an impact object are arranged inside the detection container, the electric push rod and the blocking cylinder are vertically arranged, the telescopic end of the electric push rod vertically extends downwards to extend into the blocking cylinder and is detachably attracted and fixed with the impact object which is positioned right below the blocking cylinder, the telescopic end of the electric push rod vertically shortens upwards and drives the impact object to move upwards, and the impact object is separated from the telescopic end of the electric push rod under the limiting and blocking of the blocking cylinder and falls to impact the upper surface of the concrete test block. The concrete strength detection device and the detection method thereof provided by the invention can be used for detecting the impact resistance of concrete, and are reasonable in structure and easy to operate.
Description
Technical Field
The invention belongs to the technical field of concrete detection, and particularly relates to a concrete strength detection device and a detection method thereof.
Background
The concrete is widely applied in construction, and various physical properties of the concrete are important indexes for judging the quality of the concrete. There are a lot of devices on the market for concrete detection, but there is a lack of means for anti-impact detection of concrete. The concrete test block is mostly adopted for detecting the concrete, and the impact resistance of the concrete test block can very intuitively show the strength and the hardness of the concrete, so that a device capable of detecting the impact resistance of the concrete is urgently needed.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the concrete strength detection device and the detection method thereof, which can be used for detecting the impact resistance of concrete, have a reasonable structure and are easy to operate.
The technical scheme is as follows: in order to achieve the purpose, the concrete strength detection device comprises a detection container and a concrete test block, wherein the detection container is vertically arranged on the upper surface of the concrete test block through an annular rubber pad which is arranged in a surrounding manner by the opening outline of the detection container; an electric push rod, a blocking cylinder and an impactor are arranged inside the detection container, the electric push rod and the blocking cylinder are vertically arranged, and a telescopic end of the electric push rod extends vertically downwards to extend into the blocking cylinder and is detachably attracted and fixed with the impactor located right below the blocking cylinder; the telescopic end of the electric push rod is vertically upwards shortened and drives the striker to move upwards, so that the striker is separated from the telescopic end of the electric push rod under the limit blocking of the blocking barrel and falls down to impact the upper surface of the concrete test block.
Further, a piston is arranged in the blocking cylinder in a sliding fit manner, the piston is in driving connection with the telescopic end of the electric push rod, and a first magnet is fixedly arranged at the bottom of the piston; the striker includes balancing weight, striking piece and second magnet, the striking piece can be dismantled and set up in the balancing weight bottom, the second magnet can be dismantled and set up in the balancing weight top, just the striker is inhaled mutually through second magnet and first magnet opposite sex and is fixed on the piston.
Furthermore, the striker also comprises a first precession rod fixedly connected with the striking block and a second precession rod fixedly connected with the second magnet, and the first precession rod and the second precession rod are both provided with external threads; the bottom of the balancing weight is provided with a first cavity, the top of the balancing weight is provided with a second cavity, and the first cavity and the second cavity are both provided with internal threads; the first precession rod is matched with the first cavity, and the second precession rod is matched with the second cavity.
Furthermore, the part of the balancing weight close to the bottom is gradually contracted; the balancing weight has specifications of various weights, and the balancing weights of various weight specifications have the same volume.
Furthermore, keep off a section of thick bamboo and detect the inner wall connection of container through horizontal connecting rod and fixed, and keep off a section of thick bamboo and fall into the balancing weight top contour line in the projection of vertical downward direction and enclose and close the within range.
Furthermore, the detection device also comprises a U-shaped support with a downward opening and a manual driving mechanism arranged on the U-shaped support, wherein the detection container is positioned inside the U-shaped support, the manual driving mechanism is in driving connection with the detection container, and the manual driving mechanism can drive the detection container to move up and down inside the U-shaped support.
Furthermore, the U-shaped support comprises a horizontal plate and two vertical plates connected to two ends of the horizontal plate, the manual driving mechanism is arranged on the horizontal plate, the lower ends of the two vertical plates are connected with supporting box feet which extend along the length direction of the vertical plates and are provided with downward openings, a plurality of adsorption fixing mechanisms are uniformly distributed on each supporting box foot, and the U-shaped support is fixed with the upper surface of the concrete test block through the plurality of adsorption fixing mechanisms; the adsorption fixing mechanism comprises a first screw rod, a sucker and a rotating hand wheel, wherein the first screw rod penetrates through the top of the supporting box foot and is in threaded rotary connection with the supporting box foot, the sucker is arranged at the lower end of the first screw rod and is positioned inside the supporting box foot, and the rotating hand wheel is arranged at the upper end of the first screw rod and is positioned outside the supporting box foot.
Furthermore, the manual driving mechanism comprises a rotary table, a second screw, a sliding block, a vertical connecting rod and a bearing; the sliding block is arranged on the second screw rod in a threaded fit manner, is positioned in the center of the turntable and is integrally formed with the turntable; the bearing is embedded in a bearing installation position which is arranged on the horizontal plate in a penetrating way, and the inner ring of the bearing is fixedly connected with the sliding block through the vertical connecting rod; the second screw vertically penetrates through the center of the inner ring of the bearing and is fixedly connected with the detection container; the horizontal plate is provided with a plurality of inserting holes which are uniformly distributed along the rotating track of the turntable, and the turntable can be fixed by inserting the pin rods which are movably plugged into the corresponding inserting holes.
Furthermore, the detection container is made of transparent materials, an air vent is further arranged on the detection container, and a detachable sealing cover is arranged on the air vent in a matched mode.
A detection method of a concrete strength detection device comprises the following specific steps:
the method comprises the following steps: the whole detection device is placed on a concrete test block, and the rotating hand wheel is rotated to drive the sucker to move downwards and suck the upper surface of the concrete test block, so that the U-shaped support is fixed on the upper surface of the concrete test block;
step two: pulling out the pin rod, manually rotating the rotary table to drive the detection container to move upwards, and then fixing the rotary table by using the pin rod, so that the lower end of the detection container has a height from the concrete test block, and the height can enable an impactor to be manually placed into the detection container from the opening of the detection container;
step three: starting the electric push rod, gradually extending the telescopic end of the electric push rod and pushing the first magnet to move downwards, stopping when the bottommost part of the first magnet protrudes out of the lower end of the blocking cylinder or the first magnet is pushed out of the blocking cylinder, manually holding the impactor and extending into the detection container from the opening of the detection container, and fixing the impactor on the piston through opposite attraction of the first magnet and the second magnet;
step four: pulling off the pin rod again, manually rotating the rotary table to drive the detection container to move downwards, so that the annular rubber pad is extruded and attached to the upper surface of the concrete test block, and simultaneously, removing the sealing cover to communicate the interior of the detection container with the outside;
step five: starting the electric push rod again, gradually shortening the telescopic end of the electric push rod and pulling the impactor to move upwards, enabling the first magnet and the second magnet to be separated due to the fact that the counterweight block of the impactor is limited and blocked by the blocking barrel, enabling the impactor to fall down to enable the impact block to impact the upper surface of the concrete test block, observing the damage condition of the concrete test block through the transparent detection container manually, and recording;
step six: the artifical balancing weight of getting different quality specifications of trading, the reassembling installation has the striker of different quality, carries out the striking that has the striker of different quality in proper order afterwards and detects to do the record, can draw under same whereabouts height, the concrete test block is by the broken condition of different striker striking.
Has the advantages that: the concrete strength detection device and the detection method thereof have the following beneficial effects:
1) the novel concrete anti-impact detection device is provided, the blank of concrete anti-impact detection is filled, and the significance is great;
2) the concrete anti-collision detection device can reflect the strength, hardness and other properties of the concrete very visually and clearly, and is simple in structure and easy to operate.
The detection method disclosed by the invention is reasonable in layout, clear in arrangement, easy for detection personnel to carry out detection operation and suitable for large-scale popularization.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is an exploded view of the striker;
fig. 4 is a partially enlarged schematic structural diagram of a in fig. 1.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 2, the concrete strength detection device comprises a detection container 3 and a concrete test block 10, wherein the detection container 3 is vertically arranged on the upper surface of the concrete test block 10 through an annular rubber pad 7 which is arranged by surrounding the opening outline of the detection container 3, the annular rubber pad 7 plays a role in buffering, the detection container 3 plays a role in buffering and protecting the concrete test block 10 when moving downwards, and the occurrence of the situation that the detection container 3 is moved downwards at an excessively high speed to cause collision and damage to the concrete test block 10 is prevented; an electric push rod 12, a blocking cylinder 13 and an impact 8 are arranged inside the detection container 3, the electric push rod 12 and the blocking cylinder 13 are both vertically arranged, and a telescopic end of the electric push rod 12 vertically extends downwards to extend into the blocking cylinder 13 and is detachably attracted and fixed with the impact 8 located right below the blocking cylinder 13; the telescopic end of the electric push rod 12 is vertically shortened upwards and drives the striker 8 to move upwards, so that the striker 8 is separated from the telescopic end of the electric push rod 12 under the limit stop of the baffle cylinder 13 and falls down to impact the upper surface of the concrete test block 10; the detection container 3 is arranged to prevent external environmental factors (such as wind) from influencing the falling of the impact object 8, the concrete test block 10 is only one specific embodiment of the invention, the concrete test block 10 can be replaced by a concrete pavement, and the influence of the external environmental factors is not negligible because the concrete test block is outdoors; the falling of the striker 8 is free falling under the action of gravity, and the initial speed is zero, so that the accuracy of concrete impact detection is improved to a certain extent; the important meaning of the setting of the blocking barrel 13 is that just because the limiting blocking of the blocking barrel 13, the separation of the striker 8 and the falling of the striker can be realized, which is an indispensable part.
It is worth noting that the novel concrete anti-impact detection device is provided in a mode that the striker 8 falls and impacts the concrete test block 10, so that the gap of concrete anti-impact detection is filled, and the concrete anti-impact detection device is significant.
A piston 15 is arranged in the blocking cylinder 13 in a sliding fit manner, the piston 15 is in driving connection with the telescopic end of the electric push rod 12, and a first magnet 16 is fixedly arranged at the bottom of the piston 15; the striker 8 comprises a balancing weight 81, a striking block 82 and a second magnet 83, the striking block 82 is detachably arranged at the bottom of the balancing weight 81, the second magnet 83 is detachably arranged at the top of the balancing weight 81, and the striker 8 is fixed on the piston 15 through opposite attraction of the second magnet 83 and the first magnet 16; through the opposite attraction fixing mode of the second magnet 83 and the first magnet 16, the structure is simple, the cost is saved, and the installation and the separation of the striker 8 are easier.
The part of the balancing weight 81 close to the bottom is gradually contracted, so that the air resistance is reduced, and the detection accuracy is improved; the balancing weight 81 has specifications of various weights, and the balancing weight 81 of various weight specifications has the same volume, so that the same volume can be maintained, and the influence caused by different air resistance can be avoided.
As shown in fig. 3, the striker 8 further includes a first screw stem 821 fixedly connected to the striking block 82 and a second screw stem 831 fixedly connected to the second magnet 83, wherein both the first screw stem 821 and the second screw stem 831 are provided with external threads; a first cavity 811 is formed at the bottom of the balancing weight 81, a second cavity 812 is formed at the top of the balancing weight 81, and internal threads are formed in the first cavity 811 and the second cavity 812; the first screw-in lever 821 is disposed to cooperate with the first cavity 811, and the second screw-in lever 831 is disposed to cooperate with the second cavity 812.
As shown in fig. 2, the blocking cylinder 13 is fixedly connected with the inner wall of the detection container 3 through a horizontal connecting rod 14, and the projection of the blocking cylinder 13 in the vertical downward direction falls into the range enclosed by the top contour line of the counterweight block 81, so that the striker 8 can be separated from the piston 15 under the limiting blocking effect of the blocking cylinder 13, and then fall.
As shown in fig. 1 to fig. 2, the detection device further includes a U-shaped bracket 4 with a downward opening and a manual driving mechanism 6 disposed on the U-shaped bracket 4, the detection container 3 is located inside the U-shaped bracket 4, the manual driving mechanism 6 is in driving connection with the detection container 3, and the manual driving mechanism 6 can drive the detection container 3 to move up and down inside the U-shaped bracket 4.
The U-shaped support 4 comprises a horizontal plate 41 and two vertical plates 42 connected to two ends of the horizontal plate 41, the manual driving mechanism 6 is arranged on the horizontal plate 41, the lower ends of the two vertical plates 42 are respectively connected with support box feet 1 which extend along the length direction of the vertical plates 42 and have downward openings, a plurality of adsorption fixing mechanisms 5 are uniformly distributed on each support box foot 1, and the U-shaped support 4 is fixed with the upper surface of the concrete test block 10 through the adsorption fixing mechanisms 5; the adsorption fixing mechanism 5 comprises a first screw rod 52, a sucker 51 and a rotating hand wheel 53, wherein the first screw rod 52 penetrates through the top of the support box leg 1 and is in threaded rotary connection with the support box leg, the sucker 51 is arranged at the lower end of the first screw rod 52 and is positioned inside the support box leg 1, the rotating hand wheel 53 is arranged at the upper end of the first screw rod 52 and is positioned outside the support box leg 1, the U-shaped support 4 is convenient and stable to fix, the disassembly is very easy, and the labor intensity is reduced.
As shown in fig. 1 and 4, the manual driving mechanism 6 includes a rotary plate 61, a second screw 62, a sliding block 63, a vertical connecting rod 64 and a bearing 65; the sliding block 63 is arranged on the second screw rod 62 in a threaded fit manner, and the sliding block 63 is positioned in the center of the rotary table 61 and is integrally formed with the rotary table; the bearing 65 is embedded in a bearing installation position which is arranged on the horizontal plate 41 in a penetrating way, and the inner ring of the bearing 65 is fixedly connected with the sliding block 63 through the vertical connecting rod 64; the second screw 62 vertically penetrates through the center of an inner ring of the bearing 65 and is fixedly connected with the detection container 3; the horizontal plate 41 is provided with a plurality of insertion holes 411 which are uniformly distributed along the rotation track of the turntable 61, and the turntable 61 can be fixed by inserting the pin rod 611 which is movably inserted and pulled into the corresponding insertion hole 411.
The detection container 3 is made of transparent materials, observation is convenient, the vent 11 is further arranged on the detection container, the detachable sealing cover 20 is arranged on the vent 11 in a matched mode, the internal pressure of the detection container 3 is kept the same as the external pressure, and detection accuracy is improved.
A detection method of a concrete strength detection device comprises the following specific steps:
the method comprises the following steps: the whole detection device is placed on the concrete test block 10, the rotating hand wheel 53 is rotated to drive the suction disc 51 to move downwards and suck the upper surface of the concrete test block 10, and therefore the U-shaped support 4 is fixed on the upper surface of the concrete test block 10;
step two: the pin rod 611 is pulled out, the rotary disc 61 is manually rotated to drive the detection container 3 to move upwards, and then the rotary disc 61 is fixed by using the pin rod 611, so that the lower end of the detection container 3 has a height from the concrete test block 10, and the height can enable the striker 8 to be manually placed into the detection container 3 from the opening of the detection container 3;
step three: starting the electric push rod 12, gradually extending the telescopic end of the electric push rod 12 and pushing the first magnet 16 to move downwards, stopping when the bottommost part of the first magnet 16 protrudes out of the lower end of the blocking barrel 13 or the first magnet 16 is pushed out of the blocking barrel 13, manually holding the striker 8 and extending into the detection container 3 from the opening of the detection container 3, and fixing the striker 8 on the piston 15 through opposite attraction of the first magnet 16 and the second magnet 83;
step four: pulling out the pin rod 611 again, manually rotating the rotary table 61 to drive the detection container 3 to move downwards, so that the annular rubber gasket 7 is extruded and attached to the upper surface of the concrete test block 10, and simultaneously, removing the sealing cover 20 to enable the interior of the detection container 3 to be communicated with the outside;
step five: starting the electric push rod 12 again, gradually shortening the telescopic end of the electric push rod 12 and pulling the striker 8 to move upwards, enabling the counterweight block 81 of the striker 8 to be limited and blocked by the blocking cylinder 13 to enable the first magnet 16 and the second magnet 83 to be separated, enabling the striker 8 to fall down to enable the striker block 82 to impact the upper surface of the concrete test block 10, and manually observing the damage condition of the concrete test block 10 through the transparent detection container 3 and recording the damage condition;
step six: the manual work trades the balancing weight 81 of getting different quality specifications, and the reunion is installed into the rammer 8 that has different quality, carries out the striking that has the rammer 8 of different quality in proper order afterwards and detects to do the record, can draw under same whereabouts height, concrete test block 10 is by the broken condition of different rammer 8 striking.
The invention also has the following advantages:
3) the novel concrete anti-impact detection device is provided, the blank of concrete anti-impact detection is filled, and the significance is great;
4) the concrete anti-collision detection device can reflect the strength, hardness and other properties of the concrete very visually and clearly, and is simple in structure and easy to operate.
The detection method disclosed by the invention is reasonable in layout, clear in arrangement, easy for detection personnel to carry out detection operation and suitable for large-scale popularization.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (7)
1. The utility model provides a concrete strength detection device which characterized in that: the device comprises a detection container (3) and a concrete test block (10), wherein the detection container (3) is vertically arranged on the upper surface of the concrete test block (10) through an annular rubber pad (7) which is arranged in a surrounding manner by the opening outline of the detection container; an electric push rod (12), a blocking cylinder (13) and an impact object (8) are arranged inside the detection container (3), the electric push rod (12) and the blocking cylinder (13) are both vertically arranged, and a telescopic end of the electric push rod (12) vertically extends downwards to extend into the blocking cylinder (13) and is detachably attracted and fixed with the impact object (8) located right below the blocking cylinder (13); the telescopic end of the electric push rod (12) is vertically shortened upwards and drives the striker (8) to move upwards, so that the striker (8) is separated from the telescopic end of the electric push rod (12) under the limit stop of the blocking cylinder (13) and falls to impact the upper surface of the concrete test block (10);
a piston (15) is arranged in the blocking cylinder (13) in a sliding fit manner, the piston (15) is in driving connection with the telescopic end of the electric push rod (12), and a first magnet (16) is fixedly arranged at the bottom of the piston (15); the striker (8) comprises a balancing weight (81), a striking block (82) and a second magnet (83), the striking block (82) is detachably arranged at the bottom of the balancing weight (81), the second magnet (83) is detachably arranged at the top of the balancing weight (81), and the striker (8) and the first magnet (16) are attracted oppositely and fixed on the piston (15) through the second magnet (83);
the impactor (8) further comprises a first precession rod (821) fixedly connected with the impact block (82) and a second precession rod (831) fixedly connected with the second magnet (83), and external threads are arranged on the first precession rod (821) and the second precession rod (831); a first cavity (811) is formed at the bottom of the balancing weight (81), a second cavity (812) is formed at the top of the balancing weight (81), and internal threads are formed in the first cavity (811) and the second cavity (812); the first precession rod (821) is matched with the first cavity (811), and the second precession rod (831) is matched with the second cavity (812);
the part of the balancing weight (81) close to the bottom is gradually contracted; the balancing weight (81) has specifications of various weights, and the balancing weights (81) of various weight specifications have the same volume.
2. A concrete strength detecting apparatus according to claim 1, wherein: keep off a section of thick bamboo (13) and detect the inner wall connection of container (3) fixed through horizontal connecting rod (14), and keep off a section of thick bamboo (13) and fall into balancing weight (81) top contour line in the projection of vertical downward direction and enclose the within range.
3. A concrete strength detecting apparatus according to claim 1, wherein: still include opening decurrent U type support (4) and set up manual drive mechanism (6) on U type support (4), it is inside that detection container (3) are located U type support (4), manual drive mechanism (6) are connected with detection container (3) drive, and manual drive mechanism (6) can drive and detect container (3) and move up and down in U type support (4) are inside.
4. A concrete strength detecting apparatus according to claim 3, wherein: the U-shaped support (4) comprises a horizontal plate (41) and two vertical plates (42) connected to two ends of the horizontal plate (41), the manual driving mechanism (6) is arranged on the horizontal plate (41), the lower ends of the two vertical plates (42) are connected with supporting box feet (1) which extend along the length direction of the vertical plates (42) and are downward in opening, a plurality of adsorption fixing mechanisms (5) are uniformly distributed on each supporting box foot (1), and the U-shaped support (4) is fixed with the upper surface of the concrete test block (10) through the adsorption fixing mechanisms (5); the adsorption fixing mechanism (5) comprises a first screw (52) which penetrates through the top of the supporting box leg (1) and is in threaded rotary connection with the supporting box leg, a sucker (51) which is arranged at the lower end of the first screw (52) and is positioned inside the supporting box leg (1), and a rotary hand wheel (53) which is arranged at the upper end of the first screw (52) and is positioned outside the supporting box leg (1).
5. A concrete strength detecting apparatus according to claim 4, wherein: the manual driving mechanism (6) comprises a rotary table (61), a second screw (62), a sliding block (63), a vertical connecting rod (64) and a bearing (65); the sliding block (63) is arranged on the second screw rod (62) in a threaded fit mode, and the sliding block (63) is located in the center of the rotary table (61) and is integrally formed with the rotary table; the bearing (65) is embedded in a bearing installation position which is arranged on the horizontal plate (41) in a penetrating way, and the inner ring of the bearing (65) is fixedly connected with the sliding block (63) through a vertical connecting rod (64); the second screw (62) vertically penetrates through the center of an inner ring of the bearing (65) and is fixedly connected with the detection container (3); the horizontal plate (41) is provided with a plurality of inserting holes (411) which are uniformly distributed along the rotating track of the rotary disc (61), and the rotary disc (61) can be fixed by inserting pin rods (611) which are movably inserted into the corresponding inserting holes (411).
6. A concrete strength detecting apparatus according to claim 5, wherein: the detection container (3) is made of transparent materials, an air vent (11) is further arranged on the detection container, and a detachable sealing cover (20) is arranged on the air vent (11) in a matched mode.
7. The method for detecting the concrete strength detection device according to claim 6, wherein the method comprises the following steps: the method comprises the following specific steps:
the method comprises the following steps: the whole detection device is placed on a concrete test block (10), a rotating hand wheel (53) is rotated to drive a sucker (51) to move downwards and suck the upper surface of the concrete test block (10), and therefore a U-shaped support (4) is fixed on the upper surface of the concrete test block (10);
step two: pulling out the pin rod (611), manually rotating the rotary table (61) to drive the detection container (3) to move upwards, and then fixing the rotary table (61) by using the pin rod (611), so that the lower end of the detection container (3) is higher than the concrete test block (10), and the height can enable the striker (8) to be manually placed into the detection container (3) from the opening of the detection container (3);
step three: starting the electric push rod (12), gradually extending the telescopic end of the electric push rod (12) and pushing the first magnet (16) to move downwards, stopping when the bottommost part of the first magnet (16) protrudes out of the lower end of the blocking barrel (13) or the first magnet (16) is pushed out of the blocking barrel (13), manually holding the striker (8) to extend into the detection container (3) from the opening of the detection container (3), and fixing the striker (8) on the piston (15) through opposite attraction of the first magnet (16) and the second magnet (83);
step four: pulling off the pin rod (611) again, manually rotating the rotary table (61) to drive the detection container (3) to move downwards, so that the annular rubber gasket (7) is extruded and attached to the upper surface of the concrete test block (10), and simultaneously, removing the sealing cover (20) to communicate the inside of the detection container (3) with the outside;
step five: the electric push rod (12) is started again, the telescopic end of the electric push rod (12) is gradually shortened and pulls the striker (8) to move upwards, the counterweight block (81) of the striker (8) is limited and blocked by the blocking cylinder (13) to separate the first magnet (16) from the second magnet (83), the striker (8) falls to enable the impact block (82) to impact the upper surface of the concrete test block (10), and the damage condition of the concrete test block (10) is observed manually through the transparent detection container (3) and recorded;
step six: the manual work trades the balancing weight (81) of getting different quality specifications, and the recombination installs into striker (8) that have different quality, and the striking that has striker (8) of different quality in proper order afterwards detects to do the record, can draw under same whereabouts height, concrete test block (10) are by the broken condition of different striker (8) striking.
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| CN110514541A (en) * | 2019-09-27 | 2019-11-29 | 广东正粤检测科技有限公司 | A kind of concrete strength inspection device and its detection method |
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| CN103674460A (en) * | 2012-08-29 | 2014-03-26 | 海洋王（东莞）照明科技有限公司 | Battery impact test device |
| CN105973729A (en) * | 2016-07-14 | 2016-09-28 | 上海核工程研究设计院 | Magnetic separator impact experiment testing device |
| CN107576774A (en) * | 2017-10-18 | 2018-01-12 | 西安科技大学 | Coal seam containing gas mechanical characteristic analogue experiment installation and method under uniaxial compression |
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