Concrete strength detector

Abstract

The utility model relates to the technical field of concrete strength detection, in particular to a concrete strength detector which comprises a rebound apparatus body, a rebound rod is arranged at one end of the rebound apparatus body, a sleeve is arranged on the outer wall of one end, close to one side of the rebound rod, of the rebound apparatus body, one end of the rebound apparatus body is fixedly connected with a fixing frame, and the fixing frame is fixedly connected with the rebound apparatus body. An elastic auxiliary device is arranged on the fixing frame; the elastic auxiliary device comprises a connecting frame, and a through hole is formed in one side of the connecting frame. The rebound apparatus has the advantages that the multiple sliding strips slide on the connecting frame, the two fixing blocks arranged on the sleeve are used as assistance, the perpendicularity of the rebound apparatus is adjusted according to a concrete test surface with a radian, the connecting frame is jacked by the sleeve to move on the fixing frame, and therefore the connecting frame and the fixing frame clamp and fix the sliding strips; the problem of inaccurate test data caused by deflection of a detection instrument when a user tests on a test surface with a radian is effectively avoided, and the accuracy of the test data is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete strength detection, in particular to a concrete strength detector. Background Art

[0002] Concrete refers to a general term for engineering composite materials in which aggregate is cemented into a whole by a cementitious material. Usually, the term concrete refers to cement concrete obtained by mixing cement as the cementitious material, sand and stone as the aggregate, and water (which may contain admixtures and additives) in a certain proportion. Existing strength detectors are generally divided into rebound hammers, ultrasonic detectors, and comprehensive method detectors, etc.

[0003] A concrete strength detector disclosed in Chinese Patent CN219266000U. In this concrete strength detector, by making the auxiliary ring fit with the concrete test surface, the axis of the rebound hammer body can be kept perpendicular to the concrete test surface. Since there is a large fitting surface between the auxiliary ring and the test surface, it is easier to operate, effectively reducing the error between measurement results. The spring gives the sliding sleeve a thrust in a direction away from the convex ring. After pressing the auxiliary shell to complete the test, the spring pushes the sliding sleeve to reset, so that the auxiliary ring resets, facilitating the next test. However, this type of concrete strength detector has the following disadvantages while solving problems: Since the test targets are not all flat surfaces, the detection instrument may still have problems of inaccurate test data due to being unable to keep perpendicular to the test surface during use. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a concrete strength detector.

[0005] The purpose of the utility model is achieved by the following technical solutions: A concrete strength detector includes a rebound hammer body. One end of the rebound hammer body is provided with a rebound rod. A sleeve is arranged on the outer wall of one end of the rebound hammer body near the rebound rod. One end of the rebound hammer body is fixedly connected with a fixed frame, and an elastic auxiliary device is arranged on the fixed frame.

[0006] The elastic auxiliary device includes a connecting frame. A through hole is opened on one side of the connecting frame. The connecting frame is movably sleeved on the fixed frame through the through hole. A first spring is fixedly connected in the through hole. One end of the first spring is fixedly connected to the fixed frame. A chute is opened on one side of the connecting frame, and a groove is opened on one side of the connecting frame. A sliding strip is slidably arranged inside the chute. One end of the sliding strip is fixedly connected with a second spring, and one end of the second spring is fixedly connected to the inner wall of the groove.

[0007] Preferably, the sleeve is slidably sleeved on the rebound instrument body, and the inside of the rebound rod is sleeved on the fixing frame.

[0008] Preferably, a fixing block is fixedly connected to one end of the sleeve away from the rebound instrument body, and the two fixing blocks are symmetrically arranged on the sleeve.

[0009] Preferably, a plurality of elastic auxiliary devices are arranged in a circumferential array on the fixing frame, and one side of each of the plurality of elastic auxiliary devices is provided as an inclined surface.

[0010] Preferably, one end of the sleeve is in the shape of a frustum of a cone, and the inclined surface sides of the plurality of elastic auxiliary devices are all in contact with the inner wall of the sleeve.

[0011] Preferably, the chute is communicated with the groove, and rubber strips are arranged on one side of each of the plurality of slide bars close to the rebound rod.

[0012] Preferably, a display screen is arranged on one side of the rebound instrument body, and grips are fixedly connected to both sides of the sleeve.

[0013] Beneficial effects:

[0014] By providing the elastic auxiliary device, using a plurality of slide bars to slide on the connecting frame, and with the two fixing blocks arranged on the sleeve as assistance, the vertical situation of the rebound instrument is adjusted according to the curved concrete test surface. The connecting frame is pushed by the sleeve to move on the fixing frame, so that the connecting frame and the fixing frame clamp and fix the slide bars, effectively avoiding the problem that the detection instrument is skewed and the test data is inaccurate when the user tests on a curved test surface, and improving the accuracy of the test data. Description of the drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of the present invention;

[0017] Figure 2 It is a schematic structural diagram of the second state of the present invention;

[0018] Figure 3 It is a schematic cross-sectional structure diagram of the sleeve of the present invention;

[0019] Figure 4Structural schematic diagram of the elastic auxiliary device and the rebound rod of the present utility model;

[0020] Figure 5 Structural schematic diagram of the elastic auxiliary device and the fixing bracket of the present utility model;

[0021] Figure 6 Structural schematic diagram of the rebound instrument body of the present utility model.

[0022] In the figure: 1. Rebound instrument body; 2. Sleeve; 3. Fixing bracket; 4. Rebound rod; 5. Elastic auxiliary device; 501. Connecting frame; 502. Through hole; 503. First spring; 504. Chute; 505. Slide bar; 506. Second spring; 507. Groove; 6. Display screen; 7. Grip; 8. Fixed block. Detailed implementation manners

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0025] The additional aspects and advantages of the present utility model will be further given in the following description in conjunction with the drawings, and some will become obvious from the following description, or be understood through the practice of the present utility model.

[0026] Such as Figures 1-6As shown in the figure, a concrete strength detector includes a rebound instrument body 1. One end of the rebound instrument body 1 is provided with a rebound rod 4. A sleeve 2 is arranged on the outer wall of one end of the rebound instrument body 1 near the rebound rod 4. One end of the rebound instrument body 1 is fixedly connected with a fixing frame 3, and an elastic auxiliary device 5 is arranged on the fixing frame 3; The elastic auxiliary device 5 includes a connecting frame 501. A through hole 502 is formed on one side of the connecting frame 501. The connecting frame 501 is movably sleeved on the fixing frame 3 through the through hole 502. A first spring 503 is fixedly connected in the through hole 502. One end of the first spring 503 is fixedly connected to the fixing frame 3. A chute 504 is formed on one side of the connecting frame 501, and a groove 507 is formed on one side of the connecting frame 501. A slide bar 505 is slidably arranged inside the chute 504. One end of the slide bar 505 is fixedly connected with a second spring 506. One end of the second spring 506 is fixedly connected to the inner wall of the groove 507. By setting the elastic auxiliary device 5, multiple slide bars 505 slide on the connecting frame 501, and two fixing blocks 8 arranged on the sleeve 2 are used as assistance. According to the arc-shaped concrete test surface, the vertical situation of the rebound instrument is adjusted. The sleeve 2 pushes the connecting frame 501 to move on the fixing frame 3, so that the connecting frame 501 and the fixing frame 3 clamp and fix the slide bar 505, effectively avoiding the problem that the measuring instrument is skewed and the test data is inaccurate when the user tests on the arc-shaped test surface, and improving the accuracy of the test data.

[0027] The sleeve 2 is slidably sleeved on the rebound instrument body 1, and the inside of the rebound rod 4 is sleeved on the fixing frame 3. One end of the sleeve 2 far from the rebound instrument body 1 is fixedly connected with a fixing block 8, and the two fixing blocks 8 are symmetrically arranged on the sleeve 2.

[0028] Multiple elastic auxiliary devices 5 are arranged in a circular array on the fixing frame 3, and one side of each of the multiple elastic auxiliary devices 5 is a slope.

[0029] One end of the sleeve 2 is in the shape of a frustum of a cone, and the slope sides of the multiple elastic auxiliary devices 5 are in contact with the inner wall of the sleeve 2.

[0030] The chute 504 is communicated with the groove 507, and rubber strips are arranged on one side of each of the multiple slide bars 505 close to the rebound rod 4.

[0031] A display screen 6 is arranged on one side of the rebound instrument body 1, and handles 7 are fixedly connected to both sides of the sleeve 2.

[0032] The working process is as follows:

[0033] S1. The user picks up the rebound instrument body 1, aligns one end of the sleeve 2 and the slide bar 505 with the concrete wall surface to be tested. The concrete test surface will push the slide bar 505 to slide in the chute 504 on the connecting frame 501, and the second spring 506 at one end of the slide bar 505 will contract in the groove 507;

[0034] S2. The two fixing blocks 8 provided on the sleeve 2 play a role in assisting in verticality. After the rebound instrument body 1 is perpendicular to the concrete test surface, the sleeve 2 is pulled, so that the inner wall inclined surface of the sleeve 2 pushes against the inclined surface of the connecting frame 501 to move on the fixing frame 3. At this time, the first spring 503 provided in the through hole 502 on the connecting frame 501 contracts. A slide bar 505 provided on one side of the connecting frame 501 will contact the fixing frame 3. Because a rubber strip is provided on the side of the slide bar 505 close to the fixing frame 3, when the slide bar 505 contacts the fixing frame 3, it is equivalent to the fixing frame 3 and the connecting frame 501 clamping the slide bar 505, avoiding the sliding of the slide bar 505 during the operation;

[0035] S3. Start the rebound instrument body 1, and the rebound rod 4 tests the concrete wall surface. The tested data is displayed on the display screen 6. After the test is completed, release the sleeve 2, and the first spring 503 and the second spring 506 recover, so that the connecting frame 501 and the slide bar 505 return to their original positions.

[0036] 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 by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A concrete strength tester, characterized in that: The invention comprises a rebound tester body (1), one end of which is provided with a rebound rod (4), a sleeve (2) is provided on an outer wall of one end of the rebound tester body (1) close to the rebound rod (4), one end of the rebound tester body (1) is fixedly connected with a fixing frame (3), and an elastic auxiliary device (5) is provided on the fixing frame (3); The elastic auxiliary device (5) comprises a connecting frame (501), a through hole (502) is provided on one side of the connecting frame (501), the connecting frame (501) is movably connected to the fixing frame (3) through the through hole (502), a first spring (503) is fixedly connected in the through hole (502), one end of the first spring (503) is fixedly connected to the fixing frame (3), a sliding groove (504) is provided on one side of the connecting frame (501), a groove (507) is provided on one side of the connecting frame (501), a sliding bar (505) is slidably provided inside the sliding groove (504), one end of the sliding bar (505) is fixedly connected to a second spring (506), and one end of the second spring (506) is fixedly connected to the inner wall of the groove (507).

2. A concrete strength tester according to claim 1, characterized in that: The sleeve (2) is slidably sleeved on the rebound tester body (1), and the interior of the rebound rod (4) is sleeved on the fixing frame (3).

3. A concrete strength tester according to claim 1, characterized in that: One end of the sleeve (2) away from the rebound tester body (1) is fixedly connected to a fixing block (8), and two fixing blocks (8) are symmetrically arranged on the sleeve (2).

4. A concrete strength tester according to claim 1, characterized in that: A plurality of the elastic auxiliary devices (5) are arranged in a circular array on the fixing frame (3), and one side of the plurality of the elastic auxiliary devices (5) is arranged as an inclined surface.

5. A concrete strength tester according to claim 4, characterized in that: One end of the sleeve (2) is in the shape of a truncated cone, and one side of the inclined surfaces of the plurality of elastic auxiliary devices (5) are in contact with the inner wall of the sleeve (2).

6. A concrete strength tester according to claim 1, characterized in that: The sliding groove (504) and the groove (507) are connected to each other, and a rubber strip is arranged on one side of the plurality of sliding strips (505) close to the rebound rod (4).

7. A concrete strength tester according to claim 1, characterized in that: A display screen (6) is provided on one side of the rebound tester body (1), and handles (7) are fixedly connected to both sides of the sleeve (2).

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