Portable concrete strength nondestructive testing device

Abstract

The utility model relates to the technical field of concrete strength detection, in particular to a portable concrete strength nondestructive testing device which comprises a resiliometer body, a shell is fixed at the front end of the rebound apparatus body; a protective cover is arranged above the rebound apparatus body; when the machine base is completely located in the protection cavity, the display screen and other structures are located in the coverage area of the protection cover, under the protection effect of the protection cover, the display screen and other structures are difficult to damage due to accidental collision and the like, then the display screen and other structures are protected, the service life of the rebound instrument body is guaranteed, and the rebound instrument is suitable for popularization and application. The problem that the concrete strength detection is influenced due to damage of the rebound apparatus body is avoided; under the clamping cooperation of the clamping head and the clamping groove, the protection cover can be stably installed on the top of the machine base, and then the protection cover can stably protect the machine base. And the protective cover can slide horizontally at the same time, so that the protective cover can be opened to use the key area, the display screen and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete strength detection, in particular to a portable non-destructive detection device for concrete strength. Background Art

[0002] Concrete strength is a key indicator of concrete structural performance, directly impacting the safety and durability of buildings. Therefore, accurate and reliable testing of concrete strength is crucial in construction projects. A rebound hammer is a commonly used device for concrete strength testing. It estimates concrete's compressive strength based on the correlation between concrete's surface hardness and compressive strength. It offers the advantages of portability, ease of operation, and non-destructive testing.

[0003] The utility model patent with the authorization announcement number CN217738832U discloses a digital display concrete rebound tester, which includes a rebound tester body, a control button, a display panel and a detection probe. A positioning mechanism is provided under the rebound tester body, and the positioning mechanism includes a movable slide, a support bracket, a sliding base, a positioning base, an inlet and outlet notch and a pressing base. The sliding base is provided under the rebound tester body, a movable slide is provided on the sliding base, a positioning base is fixedly installed at one end of the sliding base, and a pressing base is provided under the positioning base. The base is provided with a support bracket at the bottom of the sliding base, and a sliding mechanism is connected to the movable slide. The sliding mechanism includes a first clip, a docking base, a docking screw hole, a docking screw, a second clip and a sliding foot. The sliding foot is movably installed in the movable slide. A second clip is provided above the sliding foot, and the second clip is connected to the first clip. The ends of the first clip and the second clip are provided with a docking base, and the docking screw is connected to the docking base. After pressing the pressing base, the positioning base will be tightly attached to the wall, and the rebound tester body will remain perpendicular to the wall. When in use, first stick the positioning base to the test wall. After the positioning base is attached to the test wall, you can press the pressing base. After pressing the pressing base, the positioning base will be tightly attached to the wall, and the rebound tester body will remain perpendicular to the wall. At this time, you can push the rebound tester body forward to test the wall. During the test, the rebound tester can be prevented from tilting, thereby ensuring the accuracy of the measurement.

[0004] Although the digital concrete rebound test hammer can ensure measurement accuracy by positioning the base, the device still has the following problems in actual use: there is no protective structure on the outside of the rebound test hammer. When storing or carrying the rebound test hammer, structures such as the control buttons, display panel and mechanical scale are easily damaged by accidental external bumps, which in turn affects the normal use of the rebound test hammer, which not only brings economic losses to users but also affects the strength testing of concrete. In view of this, we propose a portable concrete strength non-destructive testing device. Utility Model Content

[0005] The purpose of the present invention is to provide a portable non-destructive testing device for concrete strength to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The portable non-destructive testing device for concrete strength comprises a rebound test hammer body, a base is fixed on the top of the rebound test hammer body, a display screen is provided on the top of the base, a key area is provided on the rear side of the display screen, and limit slots are provided on the left and right side walls of the base;

[0008] The front end of the rebound hammer body is fixed with a shell, the rear end of the shell is provided with a sliding cavity, the bottom of the sliding cavity is fixed with a guide rod, and the outer sleeve of the guide rod is provided with a spring; a slider is also slidably installed in the sliding cavity, and the bottom of the slider is provided with a sliding hole for sliding connection with the guide rod, and the top of the slider is fixed with a clamp head, which passes through the top of the shell;

[0009] A protective cover is provided above the rebound tester body, and a protective cavity is provided at the bottom of the protective cover. The front end of the protective cavity is open, and two limit blocks are fixed on the two side walls of the protective cavity at the front end, and the limit blocks are slidably connected to the limit grooves; a connecting plate is fixed above the front end of the protective cover, and a card slot is provided on the connecting plate, and the card head is engaged with the card slot.

[0010] Preferably, guide grooves are provided on both side walls of the sliding cavity, and guide blocks are fixed on both side walls of the sliding block, and the guide blocks are slidably connected to the guide grooves.

[0011] Preferably, a connecting groove is formed on the front end surface of the housing, and a shift block is fixed to the front end surface of the slider, and the shift block passes through the connecting groove.

[0012] Preferably, the clamping head and the slider are an integrally formed structure, and a slope is provided on the top of the clamping head.

[0013] Preferably, the protective cover and the connecting plate are an integrally formed structure, and both the protective cover and the connecting plate are made of plastic material.

[0014] Preferably, a plurality of anti-slip ridges are fixed to the left and right outer walls of the protective cover, and the plurality of anti-slip ridges are linearly distributed at equal intervals.

[0015] Preferably, the cross-section of the limiting groove is rectangular, and the rear end of the limiting groove is closed.

[0016] Preferably, a through groove is formed on the rear end surface of the protective cover, and the cross-section of the through groove is rectangular.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The protective cover installed on the top of the test base: When the test base is completely inside the protective cavity, the display screen and other structures are covered by the protective cover. Under the protective effect of the protective cover, the display screen and other structures are less likely to be damaged by accidental bumps, thereby protecting the display screen and other structures, ensuring the service life of the rebound hammer body, and avoiding the problem of the rebound hammer body being damaged and affecting the concrete strength test;

[0019] 2. Through the provided shell and slider structures, the protective cover can be stably installed on the top of the base under the card engagement between the card head and the card slot, so that the protective cover can provide stable protection for the base; and the protective cover can also slide horizontally, which makes it easy to open the protective cover to use the key area and display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the overall structural diagrams of the utility model;

[0021] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0022] Figure 3 This is a structural sectional view of the housing in the present utility model;

[0023] Figure 4 It is a schematic diagram of a partial explosion structure in the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the protective cover in the present utility model;

[0025] In the picture:

[0026] 1. Rebound hammer body; 10. Base; 101. Limiting groove; 102. Display screen; 103. Keypad; 11. Housing; 111. Connecting groove; 112. Slide cavity; 113. Guide groove; 12. Guide rod; 13. Spring; 14. Slider; 140. Guide block; 141. Slide hole; 15. Chuck; 150. Slope; 16. Dial block;

[0027] 2. Protective cover; 20. Anti-slip edge; 21. Protective cavity; 22. Through groove; 23. Limit block; 24. Connecting plate; 240. Card slot. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] This embodiment provides a technical solution:

[0030] See also Figure 1-Figure 5 As shown, the portable non-destructive testing device for concrete strength comprises a rebound test hammer body 1, a base 10 is fixed on the top of the rebound test hammer body 1, a display screen 102 is provided on the top of the base 10, a key area 103 is provided on the rear side of the display screen 102, and limit slots 101 are provided on the left and right side walls of the base 10; a shell 11 is fixed on the front end of the rebound test hammer body 1, a sliding cavity 112 is provided on the rear end surface of the shell 11, a guide rod 12 is fixed on the bottom of the sliding cavity 112, and a spring 13 is provided on the outer sleeve of the guide rod 12; a slider 14 is also slidably installed in the sliding cavity 112, and the bottom of the slider 14 is provided with a spring 13. A sliding hole 141 is provided for sliding connection with the guide rod 12, and a clamping head 15 is fixed on the top of the slider 14, and the clamping head 15 passes through the top of the shell 11; a protective cover 2 is provided above the rebound tester body 1, and a protective cavity 21 is provided at the bottom of the protective cover 2, and the front end of the protective cavity 21 is open. Two limit blocks 23 are fixed on the two side walls of the protective cavity 21 at the front end, and the limit blocks 23 are slidably connected to the limit groove 101; a connecting plate 24 is fixed at the upper front end of the protective cover 2, and a clamping slot 240 is provided on the connecting plate 24, and the clamping head 15 is clamped and matched with the clamping slot 240.

[0031] In this embodiment, guide grooves 113 are formed on both side walls of the sliding cavity 112, and guide blocks 140 are fixed to both side walls of the slider 14. The guide blocks 140 are slidably connected to the guide grooves 113. The provision of the guide blocks 140 and the guide grooves 113 increases the stability and smoothness of the slider 14 during its lifting and lowering.

[0032] In this embodiment, a connecting groove 111 is formed on the front face of the housing 11, and a shift block 16 is fixed to the front face of the slider 14, which passes through the connecting groove 111. The shift block 16 facilitates adjustment of the height of the slider 14 and, in turn, the position of the clamping head 15.

[0033] In this embodiment, the clamping head 15 and the slider 14 are integrally formed, with a slope 150 defined on the top of the clamping head 15. This integrally formed clamping head 15 and the slider 14 provides enhanced connection strength, ensuring the service life of the clamping head 15 and the slider 14 and effectively securing the protective cover 2. The slope 150 facilitates the engagement of the clamping head 15 with the slot 240.

[0034] In this embodiment, the protective cover 2 and the connecting plate 24 are integrally formed, and both the protective cover 2 and the connecting plate 24 are made of plastic. The integrally formed protective cover 2 and the connecting plate 24 have better connection strength, ensuring the protective effect of the protective cover 2 and the connecting plate 24 on the base 10.

[0035] In this embodiment, the left and right outer walls of the protective cover 2 are fixed with multiple anti-slip ridges 20, which are linearly and evenly spaced. The provision of the anti-slip ridges 20 facilitates the user to push the protective cover 2 for movement, making operation convenient and quick, and the design humanized.

[0036] In this embodiment, the cross-section of the limiting groove 101 is rectangular, and the rear end of the limiting groove 101 is closed. This design can prevent the protective cover 2 from being separated from the base 10, ensuring the normal use of the protective cover 2.

[0037] In this embodiment, a through slot 22 is formed on the rear end surface of the protective cover 2. The cross section of the through slot 22 is rectangular. The through slot 22 is provided to pass the charging cable, thereby facilitating charging of the rebound tester body 1 via the charging cable.

[0038] It should be added that a concave arc-shaped groove is provided on the top of the shift block 16 in this embodiment. The provided groove makes it easier to press the shift block 16, thereby improving the convenience of operation.

[0039] During specific use, the user first pushes the protective cover 2 forward, and the protective cover 2 moves forward. The limit block 23 slides along the limit slot 101. At this time, the user presses the shift block 16 downward, and the shift block 16 drives the slider 14 to move downward. The sliding hole 141 slides along the guide rod 12, and the spring 13 is compressed. At this time, the slider 14 drives the clamping head 15 to move downward and retract into the sliding cavity 112. When the rear end of the protective cavity 21 is pressed against the rear end of the machine base 10, the user releases the shift block 16. Under the elastic action of the spring 13, the shift block 16 drives the slider 14 to move upward, and the clamping head 15 passes through the clamping slot 240. At this time, the protective cover 2 is fixed and the machine base 10 is protected.

[0040] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable nondestructive testing device for concrete strength, comprising a rebound hammer body (1), a base (10) fixed on the top of the rebound hammer body (1), a display screen (102) on the top of the base (10), and a keypad (103) on the rear side of the display screen (102), characterized in that: The left and right side walls of the machine base (10) are both provided with limiting grooves (101); A housing (11) is fixed to the front end of the rebound tester body (1), a sliding cavity (112) is provided on the rear end surface of the housing (11), a guide rod (12) is fixed to the bottom of the sliding cavity (112), and a spring (13) is sleeved on the outside of the guide rod (12); a slider (14) is also slidably installed in the sliding cavity (112), a sliding hole (141) is provided at the bottom of the slider (14) and is slidably connected to the guide rod (12), a clamping head (15) is fixed to the top of the slider (14), and the clamping head (15) passes through the top of the housing (11); A protective cover (2) is provided above the rebound tester body (1), a protective cavity (21) is provided at the bottom of the protective cover (2), the front end of the protective cavity (21) is open, two side walls of the protective cavity (21) are fixed with two limit blocks (23) at the front end, and the limit blocks (23) are slidably connected to the limit groove (101); a connecting plate (24) is fixed above the front end of the protective cover (2), a card slot (240) is provided on the connecting plate (24), and a card head (15) is card-engaged with the card slot (240).

2. The portable nondestructive testing device for concrete strength according to claim 1, characterized in that: Both side walls of the sliding cavity (112) are provided with guide grooves (113), and both side walls of the sliding block (14) are fixed with guide blocks (140), which are slidably connected to the guide grooves (113).

3. The portable nondestructive testing device for concrete strength according to claim 1, characterized in that: The front end surface of the housing (11) is provided with a connecting groove (111), and the front end surface of the slider (14) is fixed with a shift block (16), which passes through the connecting groove (111).

4. The portable nondestructive testing device for concrete strength according to claim 1, characterized in that: The clamping head (15) and the sliding block (14) are an integrally formed structure, and a slope (150) is provided on the top of the clamping head (15).

5. The portable nondestructive testing device for concrete strength according to claim 1, characterized in that: The protective cover (2) and the connecting plate (24) are an integrally formed structure, and both the protective cover (2) and the connecting plate (24) are manufactured from plastic material.

6. The portable nondestructive testing device for concrete strength according to claim 1, characterized in that: A plurality of anti-slip ridges (20) are fixed to the left and right outer walls of the protective cover (2), and the plurality of anti-slip ridges (20) are linearly and evenly spaced.

7. The portable nondestructive testing device for concrete strength according to claim 1, characterized in that: The cross-section of the limiting groove (101) is rectangular, and the rear end of the limiting groove (101) is closed.

8. The portable nondestructive testing device for concrete strength according to claim 1, characterized in that: A through slot (22) is provided on the rear end surface of the protective cover (2), and the cross-section of the through slot (22) is rectangular.

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