CN110487636B

CN110487636B - Concrete compressive strength detection device and detection method thereof

Info

Publication number: CN110487636B
Application number: CN201910924820.2A
Authority: CN
Inventors: 孙勇
Original assignee: Guangdong Zhengyue Testing Technology Co ltd
Current assignee: Guangdong Zhengyue Testing Technology Co ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2022-04-22
Anticipated expiration: 2039-09-27
Also published as: CN110487636A

Abstract

The invention discloses a concrete compressive strength detection device and a detection method thereof, belonging to the technical field of concrete detection.

Description

Concrete compressive strength detection device and detection method thereof

Technical Field

The invention relates to the technical field of concrete detection, in particular to a concrete compressive strength detection device and a detection method thereof.

Background

The concrete is widely used in the field of construction, and is prepared from cement as a cementing material, sand and stone as aggregates, water and water in a certain proportion through stirring. The strength of concrete is the most important index of concrete quality, and the compressive strength of concrete is obtained by detecting a concrete test block by a concrete compressive detection device. The concrete compressive strength check out test set of current concrete carries out the extrusion in the intensity to the concrete test block, detects the biggest pressure numerical value that bears that the concrete test block can receive, and the pressure value that current check out test set obtained in the testing process leads to the testing result deviation great because the problem of placing of concrete test block, the equipment itself detects the problem such as briquetting, and the testing result is not accurate.

Disclosure of Invention

Aiming at the problems, the invention provides a concrete compressive strength detection device and a detection method thereof.

In order to achieve the above object, the present invention adopts the following technical solutions:

a concrete compression strength detection device comprises a detection frame, wherein the upper end and the lower end of one side wall of the detection frame are respectively provided with a top seat and a base, the top seat and the base are fixedly connected through a fixed wall, a fixed table surface is arranged between the detection frame and the fixed wall, a detection assembly is arranged between the fixed table surface and the top seat, the detection assembly comprises a pair of threaded rods, a movable block, a fixed rod and an installation column A, fixed mounting piece, erection column B, pressure sensor, stripper plate, a pair of threaded rod are located between fixed mesa and footstock, and equal screw thread cup joints on the threaded rod and is equipped with the movable block, is equipped with the fixed block between two movable blocks, passes through dead lever fixed connection between fixed block and movable block, is located the fixed erection column A that is equipped with in fixed block below, and a pair of fixed mounting piece is connected to erection column A one end, is equipped with pressure sensor between the fixed mounting piece, and lower extreme fixed mounting piece passes through erection column B fixed connection with the stripper plate.

Preferably, the footstock is provided with a cavity, the tops of the two threaded rods extend into the cavity and are provided with gears A, the middle of the cavity is provided with a rotating shaft, the lower end of the rotating shaft is provided with a gear B, the gear B is in transmission connection with the two gears A in a meshing mode, the upper end of the rotating shaft is provided with a gear C, the top of the footstock is provided with a driving motor, and the output end of the driving motor penetrates through the cavity and is provided with a gear D which is meshed with the gear C.

Preferably, be equipped with the switch board on the test rack, the switch board includes central processing unit, control switch, display, and upper left end of test rack is located to central processing unit, and on control switch, display located the switch board, pressure sensor's output and central processing unit's input electric connection, control switch's output and central processing unit's input electric connection, the input of display and central processing unit's output electric connection.

Preferably, be equipped with a supporting bench on the base, the symmetry is equipped with the mount on the supporting bench, and the screw thread runs through between the mount and locates the screw rod, and the screw rod both ends are equipped with clamp plate and carousel respectively, and the fixed slide bar that is equipped with between mount and the fixed mesa, is equipped with the baffle through the sliding sleeve between the slide bar.

A detection method of a concrete compressive strength detection device comprises the following steps:

s1, placing the concrete to be detected on a support table, clamping and fixing the concrete to be detected by a clamping plate through rotating a turntable, and then placing a partition plate on the concrete to be detected;

s2, starting a driving motor through a control switch, enabling a gear D to drive a rotating shaft to rotate through a gear C by the rotation of the driving motor, enabling a gear B which coaxially rotates to be in meshed transmission with a gear A at one end of a threaded rod, enabling the threaded rod to rotate, enabling a moving block on the rotating threaded rod to move downwards along the direction of the threaded rod, driving an extrusion plate at the bottom of a fixed block to move downwards by the moving block, and pressing the partition plate on the extrusion plate to apply pressure to the concrete to be detected;

s3, moving the extrusion plate downwards to gradually increase the pressure value on the concrete to be detected, and closing the driving motor until the concrete to be detected is extruded and cracked; when the extrusion plate begins to extrude the partition plate on the concrete to be detected, the pressure sensor draws the detected pressure value which changes continuously into a curve graph through the central processing unit, and the curve graph of the time value and the pressure value obtained in the detection process is displayed through the display.

Due to the adoption of the technical scheme, the invention has the beneficial effects that: compared with the traditional concrete compressive strength detection device, the concrete compressive strength detection device is simple to operate, stable and safe, high in accuracy and reliable in detection result, the gear D at the output end of the driving motor is meshed with the gear C, the diameter of the gear C is set to be far larger than that of the gear D, due to the fact that the angular speeds are different, the precision control of the driving motor on the rotation of the driving threaded rod is improved, and the phenomenon that the pressing speed of the extrusion plate is too high to influence the detection result is avoided; the arranged double screws ensure the stability of the pressing process of the extrusion plate, and the baffle plate which is conveniently installed is matched, so that the uniform and stable stress of the concrete to be detected in the detection process is fully ensured, the accuracy and reliability of the acquired pressure data are ensured, the uniform stress of the pressure sensor is also ensured, and the condition that the acquired data is larger or smaller due to the local stress is avoided; simultaneously the free installation of baffle cooperates the setting of clamp plate on waiting to detect the concrete, fixes the concrete comprehensively effectual, and the even dispersion of pressure that the baffle that increases will wait to detect the concrete and receive has guaranteed the accuracy that detects.

Drawings

FIG. 1 is a schematic structural diagram of a concrete compressive strength detecting apparatus according to the present invention;

in the figure: 1. the detection device comprises a detection frame, 2, a top seat, 2, a base, 3, a base, 4, a fixed wall, 5, a fixed table top, 6, a threaded rod, 7, a moving block, 8, a fixed block, 9, a fixed rod, 11, a fixed installation block, 12, an installation column B, 13, a pressure sensor, 14, a squeezing plate, 15, a cavity, 16, a gear A, 17, a rotating shaft, 18, a gear B, 19, gears C, 20, a driving motor, 21, a gear D, 22, a control cabinet, 23, a central processing unit, 24, a control switch, 25, a display, 26, a supporting table, 27, a fixed frame, 28, a threaded rod, 29, a clamping plate, 30, a rotary table, 31, a sliding rod, 32, a sliding sleeve, 33 and a partition plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

Example 1:

as shown in figure 1, a concrete compressive strength detection device comprises a detection frame 1, wherein the upper end and the lower end of one side wall of the detection frame 1 are respectively provided with a top seat 2 and a base 3, the top seat 2 and the base 3 are fixedly connected through a fixed wall 4, a fixed table 5 is arranged between the detection frame 1 and the fixed wall 4, a detection assembly is arranged between the fixed table 5 and the top seat 2, the detection assembly comprises a pair of threaded rods 6, a moving block 7, a fixed block 8, a fixed rod 9, an installation column A10, a fixed installation block 11, an installation column B12, a pressure sensor 13 and a squeezing plate 14, the pair of threaded rods 6 are arranged between the fixed table 5 and the top seat 2, the threads of the pair of threaded rods 6 are opposite, when the driving motor 20 is started, the two threaded rods 6 are finally driven to rotate, the rotating directions of the two threaded rods 6 are opposite, only the opposite thread on the threaded rod 6 can therefore cause the movement block 7 to move up or down in synchronism. The threaded rod 6 is provided with moving blocks 7 in a threaded sleeve connection mode, a fixing block 8 is arranged between the two moving blocks 7, the fixing block 8 is fixedly connected with the moving blocks 7 through fixing rods 9, mounting columns A10 are fixedly arranged below the fixing blocks 8, one ends of the mounting columns A10 are connected with a pair of fixed mounting blocks 11, pressure sensors 13 are arranged between the fixed mounting blocks 11, and the lower end fixed mounting blocks 11 are fixedly connected with the extrusion plate 14 through mounting columns B12.

More preferably, the top base 2 is provided with a cavity 15, the tops of the two threaded rods 6 extend into the cavity 15 and are provided with a gear a16, the middle part of the cavity 15 is provided with a rotating shaft 17, the lower end of the rotating shaft 17 is provided with a gear B18, the gear B18 is in meshing transmission connection with the two gears a16, the upper end of the rotating shaft 17 is provided with a gear C19, the top of the top base 2 is provided with a driving motor 20, the output end of the driving motor 20 penetrates into the cavity 15 and is provided with a gear D21 which is meshed with the gear C19, in the embodiment, the diameter of the gear C19 is five times the diameter of the gear C19, the diameters of the gear a16 and the gear B18 are the same, firstly, the gear D21 is meshed with the gear C19, therefore, the linear speeds of the gear D21 and the gear C19 are the same in the rotating process, according to the relationship between the diameters, the linear speeds and the angular speeds, it can be known that the angular speed of the gear C19 is one fifth of the angular speed of the gear D21, and the gear C19 and the gear B18 rotate coaxially, the angular velocities are therefore the same, the diameters of the gear B18 and of the gear a16 being the same, so that the angular velocities of the gear a16 and of the gear B18 are the same, so that it is possible to obtain an angular velocity of rotation of the threaded rod 6 that is one fifth of the angular velocity of the gear D21. Have among the prior art to utilize the threaded rod to detect, motor drive makes the threaded rod rotate, because motor speed is not convenient for adjust, it is too fast to probably extrude the concrete speed that awaits measuring in the testing process, lead to the testing result inaccurate, and when driving motor started in this implementation, gear D21 rotates, the angular velocity of threaded rod 6 is only one fifth of gear D21 angular velocity, the speed that fixed block 8 moved down in this implementation has obviously been slowed down, the precision of this device has been improved, be convenient for control, can improve the accuracy that the detection was seen.

It is more preferable that, the detection frame 1 is provided with a control cabinet 22, the control cabinet 22 comprises a central processing unit 23, a control switch 24 and a display 25, the central processing unit 23 is arranged at the upper left end of the detection frame 1, the control switch 24 and the display 25 are arranged on the control cabinet 22, the output end of the pressure sensor 13 is electrically connected with the input end of the central processing unit 23, the output end of the control switch 24 is electrically connected with the input end of the central processing unit 23, and the input end of the display 25 is electrically connected with the output end of the central processing unit 23.

Wherein more excellent one step, be equipped with a supporting bench 26 on the base 3, the symmetry is equipped with mount 27 on the supporting bench 26, screw thread runs through and locates screw rod 28 between mount 27, screw rod 28 both ends are equipped with clamp plate 29 and carousel 30 respectively, fixed slide bar 31 that is equipped with between mount 27 and stationary table face 5, be equipped with baffle 33 through sliding sleeve 32 between slide bar 31, the concrete that awaits measuring is placed behind supporting bench 26, through rotatory carousel 30, make clamp plate 29 treat the concrete that detects and carry out the centre gripping, ensure that the concrete that awaits measuring is fixed, then slide baffle 33 along slide bar 31, place baffle 33 and can carry out compressive strength detection operation in the top of waiting the concrete that detects.

In this embodiment, the detection method of the concrete compressive strength detection apparatus includes the following steps:

s1, placing a 15cm multiplied by 15cm concrete test block to be detected on the support table 26, clamping and fixing the concrete to be detected by the clamping plate 29 by rotating the turntable 30, and then placing the partition plate 33 on the concrete test block to be detected;

s2, starting the driving motor 20 through the control switch 24, enabling the gear D21 to drive the rotating shaft 17 to rotate through the gear C19 by the rotation of the driving motor 20, enabling the gear B18 which coaxially rotates to be in meshed transmission with the gear A16 at one end of the threaded rod 6, enabling the threaded rod 6 to rotate, enabling the moving block 7 on the rotating threaded rod 6 to move downwards along the direction of the threaded rod 6, enabling the moving block 7 to drive the extrusion plate 14 at the bottom of the fixed block 8 to move downwards, and enabling the extrusion plate 14 to press the partition plate 33 to press the concrete test block to be detected;

s3, moving the extrusion plate 14 downwards to gradually increase the pressure value on the concrete test block to be detected until the concrete test block to be detected is cracked by extrusion, and then closing the driving motor 20; when the extrusion plate 14 begins to extrude the partition 33 on the concrete test block to be detected, the pressure sensor 13 plots the detected continuously changing pressure value into a curve chart through the central processing unit 23, and the curve chart of the time and pressure values obtained in the detection process is displayed through the display 25.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A concrete compression strength detection device is characterized by comprising a detection frame (1), wherein the upper end and the lower end of one side wall of the detection frame (1) are respectively provided with a top seat (2) and a base (3), the top seat (2) and the base (3) are fixedly connected through a fixed wall (4), a fixed table top (5) is arranged between the detection frame (1) and the fixed wall (4), a detection assembly is arranged between the fixed table top (5) and the top seat (2), the detection assembly comprises a pair of threaded rods (6), a moving block (7), a fixed block (8), a fixed rod (9), an installation column A (10), a fixed installation block (11), an installation column B (12), a pressure sensor (13) and an extrusion plate (14), the pair of threaded rods (6) are arranged between the fixed table top (5) and the top seat (2), the threads of the pair of threaded rods (6) are opposite, when a driving motor (20) is started, finally, the two threaded rods (6) are driven to rotate, and the rotating directions of the two threaded rods (6) are opposite, so that the moving block (7) can synchronously move upwards or downwards only when the threads on the threaded rods (6) are opposite; moving blocks (7) are sleeved on the threaded rod (6) in a threaded manner, a fixed block (8) is arranged between the two moving blocks (7), the fixed block (8) is fixedly connected with the moving blocks (7) through a fixed rod (9), an installation column A (10) is fixedly arranged below the fixed block (8), one end of the installation column A (10) is connected with a pair of fixed installation blocks (11), a pressure sensor (13) is arranged between the fixed installation blocks (11), and the lower end fixed installation block (11) is fixedly connected with the extrusion plate (14) through an installation column B (12);

the top seat (2) is provided with a cavity (15), the tops of the two threaded rods (6) extend into the cavity (15) and are provided with gears A (16), the middle part of the cavity (15) is provided with a rotating shaft (17), the lower end of the rotating shaft (17) is provided with a gear B (18), the gear B (18) is in meshing transmission connection with the two gears A (16), the upper end of the rotating shaft (17) is provided with a gear C (19), the top part of the top seat (2) is provided with a driving motor (20), the output end of the driving motor (20) penetrates into the cavity (15) and is provided with a gear D (21) which is meshed with the gear C (19), the diameter of the gear C (19) is five times that of the gear C (19), the diameters of the gears A (16) and the gear B (18) are the same, firstly, the gear D (21) is meshed with the gear C (19), so that the linear speeds of the gears D (21) and the gear C (19) in the rotating process are the same, from the relationship among the diameter, the linear velocity and the angular velocity, it can be seen that the angular velocity of the gear C (19) is one fifth of the angular velocity of the gear D (21), while the gear C (19) and the gear B (18) rotate coaxially and therefore have the same angular velocity, and the gear B (18) and the gear a16 have the same diameter and therefore have the same angular velocity of the gear a16 and the gear B (18), so that it is possible to obtain that the angular velocity at which the threaded rod 6 rotates is one fifth of the angular velocity of the gear D (21); when the driving motor is started, the gear D (21) rotates, the angular speed of the threaded rod (6) is only one fifth of the angular speed of the gear D (21), the downward moving speed of the fixed block (8) is reduced, the precision of the detection device is improved, the control is convenient, and the accuracy of a detection result can be improved;

the detection frame (1) is provided with a control cabinet (22), the control cabinet (22) comprises a central processing unit (23), a control switch (24) and a display (25), the central processing unit (23) is arranged at the upper left end of the detection frame (1), the control switch (24) and the display (25) are arranged on the control cabinet (22), the output end of the pressure sensor (13) is electrically connected with the input end of the central processing unit (23), the output end of the control switch (24) is electrically connected with the input end of the central processing unit (23), and the input end of the display (25) is electrically connected with the output end of the central processing unit (23);

the concrete detector is characterized in that a supporting platform (26) is arranged on the base (3), fixing frames (27) are symmetrically arranged on the supporting platform (26), a screw rod (28) is arranged between the fixing frames (27) in a penetrating mode through threads, clamping plates (29) and a rotary table (30) are arranged at two ends of the screw rod (28) respectively, sliding rods (31) are fixedly arranged between the fixing frames (27) and the fixed table top (5), a partition plate (33) is arranged between the sliding rods (31) through sliding sleeves (32), after concrete to be detected is placed on the supporting platform (26), the clamping plates (29) clamp the concrete to be detected by rotating the rotary table (30), the concrete to be detected is ensured to be fixed, then the partition plate (33) slides downwards along the sliding rods (31), and the partition plate (33) is placed above the concrete to be detected to detect the compressive strength;

the detection method of the concrete compressive strength detection device comprises the following steps:

s1, placing a 15cm multiplied by 15cm to-be-detected concrete test block on a support table (26), clamping and fixing the to-be-detected concrete by a clamping plate (29) through rotating a turntable (30), and then placing a partition plate (33) on the to-be-detected concrete test block;

s2, starting a driving motor (20) through a control switch (24), enabling a gear D (21) to drive a rotating shaft (17) to rotate through a gear C (19) by the rotation of the driving motor (20), enabling a gear B (18) which coaxially rotates to be in meshed transmission with a gear A (16) at one end of a threaded rod (6) to enable the threaded rod (6) to rotate, enabling a moving block (7) on the rotating threaded rod 6 to move downwards along the direction of the threaded rod (6), enabling the moving block (7) to drive a pressing plate (14) at the bottom of a fixed block (8) to move downwards, and enabling the pressing plate (14) to press a partition plate (33) on a concrete test block to be detected;

s3, moving the extrusion plate (14) downwards to enable the pressure value on the concrete test block to be detected to be gradually increased until the concrete test block to be detected is extruded and cracked, and then closing the driving motor (20); when the extrusion plate (14) begins to extrude the partition plate (33) on the concrete test block to be detected, the pressure sensor (13) draws the detected pressure value which changes continuously into a curve graph through the central processing unit (23), and the curve graph of the time value and the pressure value obtained in the detection process is displayed through the display (25).