Concrete hardness testing device

Abstract

The utility model relates to a concrete hardness testing device which comprises a rack and a cleaning mechanism, a telescopic pressure head is arranged on the top of the rack, a supporting disc is rotatably arranged in the rack, protective cylinders are arranged on the two end faces of the supporting disc, and a first driving mechanism is connected between the supporting disc and the rack. The cleaning mechanism is located below the supporting disc and comprises a sliding rod arranged on the side wall of the rack, a first telescopic driving part is connected between one end of the sliding rod and the side wall of the rack, a rotating sleeve is rotationally arranged at the other end of the sliding rod, and a second driving mechanism is connected between the sliding rod and the rotating sleeve. The rotating sleeve is slidably connected with a hollow rotating rod, a second telescopic driving component is connected between the hollow rotating rod and the rotating sleeve, and a scraping plate is arranged on the hollow rotating rod. And when one protective cylinder is rotated to be downward for cleaning, the other protective cylinder is rotated to be upward for testing, so that the test can be carried out while cleaning is carried out.

Description

Technical Field

[0001] The utility model belongs to the technical field of hardness testing, and particularly relates to a concrete hardness testing device. Background Art

[0002] As a building material widely used in construction projects, the quality of concrete has an important impact on the safety and durability of construction projects. In order to ensure the quality of concrete, hardness tests are required.

[0003] When it is necessary to conduct a hardness test on concrete in the prior art, it is necessary to first make a concrete test block, and then use a concrete hardness testing device to test the test block. The concrete hardness testing device in the prior art includes a support table, on which a protective cylinder is provided. The function of the protective cylinder is to prevent the test piece from bursting and splashing during the test. Above the support table, a pressure head is connected through a telescopic driving component such as a hydraulic cylinder, a pneumatic cylinder or an electric push rod. After placing the test piece on the support table inside the protective cylinder, the telescopic driving component is used to drive the detection head to press on the test piece for testing.

[0004] However, after the test is completed, since a large force is required to crack the test piece, a large amount of concrete fragments are generated inside the protective cylinder, and some fragments will also adhere to the upper surface of the support table and the inner wall of the protective cylinder, which makes it inconvenient to clean the test piece in the protective cylinder after the test. Summary of the Utility Model

[0005] The utility model provides a concrete hardness testing device, which can solve the technical problems in the above background art.

[0006] The technical solution adopted by the utility model:

[0007] A concrete hardness testing device includes a frame and a cleaning mechanism. A telescopic pressure head is provided on the top of the frame. A support disc is rotatably provided inside the frame. Protective cylinders are provided on both end faces of the support disc. A first driving mechanism is connected between the support disc and the frame. The first driving mechanism can drive the support disc to rotate so that the two protective cylinders alternately face the telescopic pressure head. The cleaning mechanism is located below the support disc. The cleaning mechanism includes a sliding rod slidably penetrating through the side wall of the frame. One end of the sliding rod is connected to the side wall of the frame through a first telescopic driving component. A rotating sleeve is rotatably provided at the other end of the sliding rod. A second driving mechanism is connected between the sliding rod and the rotating sleeve. A hollow rotating rod is slidably connected to the upper side inside the rotating sleeve. A second telescopic driving component is connected between the hollow rotating rod and the bottom of the rotating sleeve. A scraping plate matching the side wall of the protective cylinder and the end face of the support disc is provided on the hollow rotating rod.

[0008] Further, the first driving mechanism includes a short journal and a long journal rotatably passing through opposite side walls of the frame, and a first motor disposed on the side wall of the frame. The short journal and the long journal are respectively fixedly connected to opposite side walls of the support disc. A driven bevel gear is provided on the short journal, and a driving bevel gear is provided on the output shaft of the first motor. The driving bevel gear meshes with the driven bevel gear.

[0009] Further, the hollow rotating rod includes a straight pipe section and a bent pipe section. The bent pipe section is connected to the upper end of the straight pipe section. The lower side of the straight pipe section is slidably disposed in the rotating sleeve. The second telescopic driving member is connected to the lower end of the straight pipe section. The scraping plate is disposed on the bent pipe section. The bent pipe section is of a U-shaped structure, and the scraping plate is of an L-shaped structure.

[0010] Further, the sliding rod is of a U-shaped structure. The rotating sleeve rotatably passes through two side walls of the sliding rod close to the protective cylinder. A plurality of exhaust holes are provided on the bent pipe section. A ventilation sleeve is rotatably sleeved on the rotating sleeve. The ventilation sleeve is disposed on the lower side wall of the sliding rod. An air inlet hole is provided on the side wall of the rotating sleeve. The air inlet hole is located inside the ventilation sleeve. The ventilation sleeve is connected to an air pump.

[0011] Further, the second driving mechanism includes a second motor disposed on the upper side wall of the sliding rod. A driving gear is provided on the output shaft of the second motor. A toothed ring is sleeved on the rotating sleeve. The driving gear meshes with the toothed ring.

[0012] Further, a U-shaped frame is provided at the lower end of the straight pipe section. The second telescopic driving member is connected to the U-shaped frame.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] After the test is completed, the first driving mechanism is used to drive the protective cylinder to rotate to a downward state. Most of the broken test pieces will fall out of the lower protective cylinder, and the other protective cylinder will rotate to an upward state for the test. The first telescopic driving member is used to drive the scraping plate to move from the outside below the protective cylinder to below the protective cylinder. The second telescopic driving member is used to drive the scraping plate to rise and move into the protective cylinder, so that the scraping plate fits against the inner side wall of the protective cylinder and the lower end face of the support disc. The second driving mechanism is used to drive the scraping plate to rotate to scrape the inner wall of the protective cylinder and the lower end face of the support disc, which is convenient for cleaning the test pieces after the test in the lower protective cylinder. The upper protective cylinder can be used for the test at the same time, so that the hardness test can be carried out while cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 is Figure 1 the schematic diagram of the structure in the A direction of

[0017] Figure 3 isFigure 1 Schematic diagram of the overhead view at the middle support plate;

[0018] In the figure: 1, frame; 2, long journal; 3, first telescopic driving component; 4, sliding rod; 5, second motor; 6, driving gear; 7, air pump; 8, air inlet hole; 9, second telescopic driving component; 10, rotating sleeve; 11, air exchange sleeve; 12, tooth ring; 13, U-shaped frame; 14, straight pipe section; 15, elbow pipe section; 16, scraping plate; 17, protective cylinder; 18, support plate; 19, first motor; 20, driving bevel gear; 21, driven bevel gear; 22, short journal; 23, telescopic pressing head; 24, exhaust hole. Specific implementation mode

[0019] In order to better understand the technical content of the utility model, specific embodiments are provided below, and the utility model will be further described in conjunction with the accompanying drawings.

[0020] See Figures 1 to 3 , the utility model provides a concrete hardness test device, including a frame 1 and a cleaning mechanism. The frame 1 is of a U-shaped structure. A telescopic pressing head 23 is provided on the top of the frame 1. The telescopic pressing head 23 includes a hydraulic cylinder fixedly arranged on the inner top of the frame 1 and a pressing head fixedly arranged on the telescopic end of the hydraulic cylinder. A support plate 18 is rotatably arranged in the frame 1. Protective cylinders 17 are fixedly arranged on both end faces of the support plate 18. The protective cylinders 17 are used to prevent the test piece from bursting and splashing. A first driving mechanism is connected between the support plate 18 and the frame 1. The first driving mechanism can drive the support plate 18 to rotate so that the two protective cylinders 17 alternately face the telescopic pressing head 23. The cleaning mechanism is located below the support plate 18. The cleaning mechanism includes a sliding rod 4 horizontally and slidably penetrating through the side wall of the frame 1. One end of the sliding rod 4 is connected to the side wall of the frame 1 by a first telescopic driving component 3. The first telescopic driving component 3 is fixedly arranged on the side wall of the frame 1. The telescopic end of the first telescopic driving component 3 is connected to the outer end of the sliding rod 4. A rotating sleeve 10 is vertically and rotatably penetrated through the inner end of the sliding rod 4. A second driving mechanism is connected between the sliding rod 4 and the rotating sleeve 10. A hollow rotating rod is slidably arranged inside the upper side of the rotating sleeve 10. A second telescopic driving component 9 is connected between the hollow rotating rod and the bottom of the rotating sleeve 10. The second telescopic driving component 9 is fixedly arranged inside the rotating sleeve 10. The telescopic end of the second telescopic driving component 9 is connected to the lower end of the hollow rotating rod. A scraping plate 16 matching the side wall of the protective cylinder 17 and the end face of the support plate 18 is arranged on the hollow rotating rod. The first telescopic driving component 3 and the second telescopic driving component 9 can adopt a hydraulic cylinder, a pneumatic cylinder or an electric push rod;

[0021] During the test, the test piece is placed in the upward protective cylinder 17 and is located in the direct direction of the telescopic pressing head 23. Control the telescopic pressing head 23 to descend and press on the test piece for the test;

[0022] After the test is completed, the telescopic indenter 23 rises above the upper protective cylinder 17 to avoid interference with the telescopic indenter 23 when the rotating support plate 18 and the protective cylinder 17 rotate. The drive mechanism 1 drives the support plate 18 to rotate 180 degrees, so that the original upper protective cylinder 17 rotates to a downward state, and most of the broken test pieces will fall out of the protective cylinder 17, while the original lower protective cylinder 17 will rotate to an upward state and can be used for the test. The telescopic drive member 1 3 drives the slide bar 4 to slide inward on the side wall of the frame 1. The slide bar 4 drives the scraper 16 to move from the outside below the protective cylinder 17 to below the protective cylinder 17 through the rotating sleeve 10 and the hollow rod. The telescopic drive member 2 9 drives the hollow rod to slide upward in the rotating sleeve 10, and the hollow rod drives the scraper 16 to rise and move into the protective cylinder 17, so that the vertical side and the horizontal side of the scraper 16 are respectively attached to the inner side wall of the protective cylinder 17 and the lower end surface of the support plate 18. The drive mechanism 2 drives the scraper 16 to rotate to scrape the inner wall of the protective cylinder 17 and the lower end surface of the support plate 18, which can comprehensively clean the lower end surface of the support plate 18 and the inner wall of the protective cylinder 17, facilitating the cleaning of the test pieces after the test in the lower protective cylinder 17, while the upper protective cylinder 17 can be used for the test at the same time, enabling the hardness test to be carried out while cleaning;

[0023] After the cleaning is completed, the telescopic drive member 2 9 drives the hollow rod to descend, and the hollow rod drives the scraper 16 to descend and withdraw below the protective cylinder 17. The telescopic drive member 1 3 drives the slide bar 4 to slide outward on the side wall of the support frame. The slide bar 4 drives the rotating sleeve 10, the hollow rod and the scraper 16 to move to the right side of the protective cylinder 17. To prevent the test pieces from hitting components such as the scraper 16, the drive mechanism 2 and the hollow rod when the support plate 18 rotates to discharge the test pieces.

[0024] Preferably, the drive mechanism 1 includes a short journal 22 and a long journal 2 rotatably penetrating through the opposite side walls of the frame 1 and a motor 1 19 fixedly arranged on the side wall of the frame 1. The short journal 22 and the long journal 2 are respectively fixedly connected to the opposite side walls of the support plate 18. A driven bevel gear 21 is fixedly arranged at the outer end of the short journal 22, and a driving bevel gear 20 is fixedly arranged on the output shaft of the motor 1 19. The driving bevel gear 20 meshes with the driven bevel gear 21;

[0025] When the motor 1 19 drives the driving bevel gear 20 to rotate, the driving bevel gear 20 drives the short journal 22 to rotate on the side wall of the frame 1 through the driven bevel gear 21. The short journal 22 drives the support plate 18 to rotate, and the support plate 18 drives the long journal 2 to rotate on the other side wall of the frame 1. The short journal 22 and the long journal 2 are used to support the support plate 18, which is beneficial to improving the support strength of the support plate 18.

[0026] Preferably, the hollow rotating rod includes a rigid straight pipe section 14 and a bent pipe section 15. The bent pipe section 15 is connected to the upper end of the straight pipe section 14. The lower side of the straight pipe section 14 is slidably disposed within the rotating sleeve 10, and the outer contour of the cross-section of the straight pipe section 14 and the inner contour of the cross-section of the rotating sleeve 10 are both non-circular structures that match each other, so as to prevent the straight pipe section 14 from rotating within the rotating sleeve 10. The lower end of the straight pipe section 14 can slide within the upper side of the rotating sleeve 10. The telescopic driving member two 9 is connected to the lower end of the straight pipe section 14. The scraping plate 16 is fixedly disposed on the bent pipe section 15. The bent pipe section 15 is a U-shaped structure, and the scraping plate 16 is an L-shaped structure.

[0027] Preferably, the sliding rod 4 is a U-shaped structure. The rotating sleeve 10 rotatably penetrates through the two side walls of the sliding rod 4 close to the protective cylinder 17. A plurality of exhaust holes 24 are provided on the bent pipe section 15. A ventilation sleeve 11 is rotatably sleeved on the rotating sleeve 10. The ventilation sleeve 11 is fixedly disposed on the lower side wall of the sliding rod 4. A plurality of air inlet holes 8 are provided on the side wall of the rotating sleeve 10. The air inlet holes 8 are located within the ventilation sleeve 11. The ventilation sleeve 11 is connected to an air pump 7;

[0028] The driving mechanism two drives the rotating sleeve 10 to rotate on the sliding rod 4. The rotating sleeve 10 drives the bent pipe section 15 to rotate through the straight pipe section 14. The bent pipe section 15 drives the scraping plate 16 to rotate for scraping. During this process, the air pump 7 is used to convey air into the ventilation sleeve 11. After the air is conveyed into the rotating sleeve 10 through the air inlet holes 8, it then flows into the straight pipe section 15 and the bent pipe section 15, and is blown towards the lower end face of the support plate 18 and the inner wall of the protective cylinder 17 through the exhaust holes 24, which is beneficial to improving the cleaning effect.

[0029] Preferably, the driving mechanism two includes a motor two 5 fixedly disposed on the upper side wall of the sliding rod 4. A driving gear 6 is fixedly provided on the output shaft of the motor two 5. A toothed ring 12 is fixedly sleeved on the rotating sleeve 10. The driving gear 6 meshes with the toothed ring 12;

[0030] The motor two 5 is used to drive the driving gear 6 to rotate. The driving gear 6 drives the rotating sleeve 10 to rotate on the sliding rod 4 through the toothed ring 12. The rotating sleeve 10 drives the scraping plate 16 to rotate within the protective cylinder 17 through the hollow rotating rod.

[0031] Preferably, a U-shaped frame 13 is fixedly provided at the lower end of the straight pipe section 14. The telescopic end of the telescopic driving member two 9 is fixedly connected to the U-shaped frame 13. By using the U-shaped frame 13 for transitional connection between the straight pipe section 14 and the telescopic driving member two 9, it can prevent the telescopic end of the telescopic driving member two 9 from being blocked at the lower end of the straight pipe section 14.

[0032] The above are only the preferred embodiments of the utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the utility model.

Claims

1. A concrete hardness test device, characterized in that: It includes a frame and a cleaning mechanism. A telescopic ram is provided on the top of the frame. A support disk is rotatably provided inside the frame. Protective cylinders are provided on both end faces of the support disk. A first driving mechanism is connected between the support disk and the frame. The first driving mechanism can drive the support disk to rotate so that the two protective cylinders alternately face the telescopic ram. The cleaning mechanism is located below the support disk. The cleaning mechanism includes a slide bar slidably penetrating through the side wall of the frame. One end of the slide bar is connected to the side wall of the frame by a first telescopic driving component. A rotating sleeve is rotatably provided at the other end of the slide bar. A second driving mechanism is connected between the slide bar and the rotating sleeve. A hollow rotating rod is slidably connected to the upper side inside the rotating sleeve. A second telescopic driving component is connected between the hollow rotating rod and the bottom of the rotating sleeve. A scraping plate matching the side wall of the protective cylinder and the end face of the support disk is provided on the hollow rotating rod.

2. The concrete hardness test device according to claim 1, wherein: The first driving mechanism includes a short shaft neck and a long shaft neck rotatably penetrating through the opposite side walls of the frame and a first motor provided on the side wall of the frame. The short shaft neck and the long shaft neck are respectively fixedly connected to the opposite side walls of the support disk. A driven bevel gear is provided on the short shaft neck. A driving bevel gear is provided on the output shaft of the first motor. The driving bevel gear meshes with the driven bevel gear.

3. A concrete hardness test device according to claim 1, characterized in that: The hollow rotating rod includes a straight pipe section and a bent pipe section. The bent pipe section is connected to the upper end of the straight pipe section. The lower side of the straight pipe section is slidably provided inside the rotating sleeve. The second telescopic driving component is connected to the lower end of the straight pipe section. The scraping plate is provided on the bent pipe section. The bent pipe section is of a U-shaped structure. The scraping plate is of an L-shaped structure.

4. The concrete hardness test device according to claim 3, characterized in that: The slide bar is of a U-shaped structure. The rotating sleeve rotatably penetrates through the two side walls of the slide bar close to the protective cylinder. A plurality of exhaust holes are provided on the bent pipe section. A ventilation sleeve is rotatably sleeved on the rotating sleeve. The ventilation sleeve is provided on the lower side wall of the slide bar. An air inlet hole is provided on the side wall of the rotating sleeve. The air inlet hole is located inside the ventilation sleeve. The ventilation sleeve is connected to an air pump.

5. The concrete hardness test device according to claim 3, wherein: The second driving mechanism includes a second motor provided on the upper side wall of the slide bar. A driving gear is provided on the output shaft of the second motor. A toothed ring is sleeved on the rotating sleeve. The driving gear meshes with the toothed ring.

6. The concrete hardness test device according to claim 3, characterized in that: A U-shaped frame is provided at the lower end of the straight pipe section. The second telescopic driving component is connected to the U-shaped frame.

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