Multifunctional springback testing device

Abstract

The utility model discloses a multifunctional springback testing device which comprises a handheld springback tester and a guide sleeve, the handheld springback tester penetrates through the middle of the guide sleeve, a sliding groove is formed in the outer surface of the guide sleeve, a rotating rod is installed on the inner side of the sliding groove in a sliding mode, a rotating ring is installed in the guide sleeve in a rotating mode, and the rotating ring is connected with the handheld springback tester. A plurality of pressurizing blocks are fixedly mounted on the inner side of the rotating ring, a plurality of positioning guide plates are mounted on the inner side of the guide sleeve, positioning rods are fixed to the outer side surfaces of the positioning guide plates, one ends of the positioning rods are inserted into the guide sleeve, and positioning blocks are fixed to the ends of the positioning rods; the outer side of the end, connected with the positioning block, of the positioning rod is sleeved with a positioning spring, and the number of the positioning guide plates is consistent with the number of the pressurizing blocks. According to the utility model, the handheld rebound tester is clamped and positioned through the four positioning guide plates, so that the handheld rebound tester is kept vertical to the surface of concrete, and the accuracy of test data is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete rebound testing, in particular to a multifunctional rebound testing device. Background Art

[0002] The rebound method is a method of estimating the strength of concrete by using a spring-driven weight to hit the concrete surface through a hitting rod (force transmission rod) and measuring the distance the weight is rebounded. The rebound value (ratio of the rebound distance to the initial length of the spring) is used as an indicator related to strength. Since the measurement is carried out on the concrete surface, it is a surface hardness method, which is a detection method established based on the correlation between the surface hardness and strength of concrete.

[0003] A rebound tester is needed when conducting a concrete rebound test. The rebound tester is divided into a handheld rebound tester and an electronic rebound tester according to different detection methods. The electronic rebound tester can automatically record the rebound value during the detection process, while the handheld rebound tester requires manual recording of the rebound value. Both the handheld rebound tester and the electronic rebound tester need to ensure that the instrument is perpendicular to the concrete surface during detection to minimize detection errors.

[0004] When operating the handheld rebound tester, it is impossible to ensure that the handheld rebound tester remains perpendicular to the concrete surface, resulting in deviation in the test results and reduced accuracy; therefore, it does not meet existing needs. In this regard, we propose a multifunctional rebound testing device. Utility Model Content

[0005] The purpose of the utility model is to provide a multifunctional rebound testing device to solve the problem that the handheld rebound tester proposed in the above background technology cannot ensure that the handheld rebound tester remains perpendicular to the concrete surface during operation, resulting in deviation in the test results and reduced accuracy.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multifunctional rebound testing device, comprising a handheld rebound tester and a guide sleeve, the handheld rebound tester passes through the middle of the guide sleeve, the outer surface of the guide sleeve is provided with a slide groove, a rotating rod is slidably installed on the inner side of the slide groove, a rotating ring is rotatably installed inside the guide sleeve, a plurality of pressure blocks are fixedly installed on the inner side of the rotating ring, a plurality of positioning guide plates are installed on the inner side of the guide sleeve, a positioning rod is fixed on the outer surface of the positioning guide plate, one end of the positioning rod is inserted into the inside of the guide sleeve and a positioning block is fixed to this end, a positioning spring is sleeved on the outer side of the end where the positioning rod is connected to the positioning block, and the number of the positioning guide plates is consistent with the number of pressure blocks.

[0007] Preferably, a slot is provided on the outer surface of the rotating ring, and one end of the rotating rod is inserted into the inner side of the slot.

[0008] Preferably, two limiting plates are installed on the outer side of the end portion where the positioning rod is connected to the positioning block. The limiting plates are embedded on the inner wall of the guide sleeve and connected to the guide sleeve by screws.

[0009] Preferably, an inclined surface is provided at the end of the positioning block facing the pressure block, and the inclination angle of the inclined surface is thirty degrees to forty-five degrees.

[0010] Preferably, a rubber strip is provided on the inner surface of the positioning guide plate, and the rubber strip is connected to the positioning guide plate by an adhesive.

[0011] The upper and lower surfaces of the rotating rod are both fixedly inlaid with second adsorption magnets, the inner side of the sliding groove is inlaid with two first adsorption magnets symmetrically distributed up and down, and the second adsorption magnet is magnetically adsorbed and connected to the first adsorption magnet.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model slides the rotating rod counterclockwise so that the rotating rod drives the rotating ring and the pressure block to rotate around the axis of the guide sleeve, so that the pressure block approaches the positioning block and squeezes the positioning block, so that the positioning block drives the positioning rod and the positioning guide plate to position and clamp the handheld rebound tester passing through the guide sleeve, ensuring that the axis of the handheld rebound tester coincides with the axis of the guide sleeve and remains perpendicular to the concrete surface, thereby improving the accuracy of the test result;

[0014] 2. After the rotating rod slides, the utility model utilizes the magnetic adsorption between the second adsorption magnet and the first adsorption magnet to increase the friction resistance of the rotating rod on the inner side of the slide groove, thereby ensuring that the rotating rod will not move without external force intervention. After one operation, the handheld rebound tester and the guide sleeve always keep the shaft ends overlapped, and there is no need to readjust the handheld rebound tester and the guide sleeve when repeating the rebound test. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a cross-sectional schematic diagram of the guide sleeve of the utility model;

[0017] Figure 3 for Figure 2 A magnified view of the structure at center A;

[0018] Figure 4 It is a structural schematic diagram of the rotating rod of the utility model.

[0019] In the figure: 1. Hand-held rebound tester; 2. Guide sleeve; 3. Slide groove; 4. Rotating rod; 5. Rotating ring; 6. Positioning guide plate; 7. Positioning rod; 8. Pressure block; 9. Rubber strip; 10. Positioning block; 11. Positioning spring; 12. Limiting piece; 13. First adsorption magnet; 14. Second adsorption magnet. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] like Figures 1 to 3 As shown, a multifunctional rebound test device comprises a handheld rebound tester 1 and a guide sleeve 2, the handheld rebound tester 1 passes through the middle of the guide sleeve 2, a slide groove 3 is provided on the outer surface of the guide sleeve 2, a rotating rod 4 is slidably installed on the inner side of the slide groove 3, a rotating ring 5 is rotatably installed inside the guide sleeve 2, a plurality of pressure blocks 8 are fixedly installed on the inner side of the rotating ring 5, a plurality of positioning guide plates 6 are installed on the inner side of the guide sleeve 2, a positioning rod 7 is fixed on the outer surface of the positioning guide plate 6, one end of the positioning rod 7 is inserted into the inside of the guide sleeve 2 and a positioning block 10 is fixed on this end, and the end portion of the positioning rod 7 connected to the positioning block 10 is externally The side sleeve is provided with a positioning spring 11, the number of positioning guide plates 6 is consistent with the number of pressure blocks 8, a slot is provided on the outer surface of the rotating ring 5, one end of the rotating rod 4 is inserted into the inner side of the slot, and the rotating rod 4 is slid counterclockwise, so that the rotating rod 4 drives the rotating ring 5 and the pressure block 8 to rotate around the axis of the guide sleeve 2, so that the pressure block 8 approaches the positioning block 10 and squeezes the positioning block 10, so that the positioning block 10 drives the positioning rod 7 and the positioning guide plate 6 to position and clamp the handheld rebound tester 1 passing through the guide sleeve 2, ensuring that the axis of the handheld rebound tester 1 coincides with the axis of the guide sleeve 2.

[0022] A rubber strip 9 is provided on the inner surface of the positioning guide plate 6, and the rubber strip 9 is connected to the positioning guide plate 6 by an adhesive. The rubber strip 9 is used to perform elastic buffering between the positioning guide plate 6 and the handheld rebound tester 1, to ensure that after the positioning guide plate 6 is positioned and clamped on the handheld rebound tester 1, the handheld rebound tester 1 can move along the axis of the guide sleeve 2 after being subjected to force, thereby completing the rebound test of the concrete.

[0023] like Figure 2 and Figure 3As shown, two limit plates 12 are installed on the outer side of the end where the positioning rod 7 is connected to the positioning block 10. The limit plates 12 are embedded in the inner wall of the guide sleeve 2 and connected to the guide sleeve 2 by screws. The end of the positioning block 10 facing the pressure block 8 is provided with an inclined slope, and the inclination angle of the slope is thirty to forty-five degrees. The limit plates 12 are used to limit the position of the positioning spring 11 and the positioning block 10 to ensure that the positioning rod 7, the positioning block 10 and the positioning spring 11 will not fall from the guide sleeve 2, and to ensure that the pressure block 8 squeezes the positioning block 10 and compresses the positioning spring 11 when it contacts the positioning block 10.

[0024] like Figure 2 and Figure 4 As shown, the upper and lower surfaces of the rotating rod 4 are fixedly inlaid with second adsorption magnets 14, and the inner side of the slide groove 3 is inlaid with two first adsorption magnets 13 symmetrically distributed up and down, and the second adsorption magnet 14 is magnetically adsorbed and connected with the first adsorption magnet 13. After the rotating rod 4 slides, the magnetic adsorption between the second adsorption magnet 14 and the first adsorption magnet 13 is utilized to increase the friction resistance of the rotating rod 4 on the inner side of the slide groove 3, thereby ensuring that the rotating rod 4 will not move in position without external force interference.

[0025] Working principle: First, fit the large end of the guide sleeve 2 to the concrete surface. At this time, the guide sleeve 2 remains perpendicular to the concrete surface. Then, the staff inserts the handheld rebound tester 1 into the middle of the guide sleeve 2 and slides the rotating rod 4 so that the rotating rod 4 slides from one end of the slide slot 3 to the other end, and the second adsorption magnet 14 is adsorbed by the magnetic line of the first adsorption magnet 13. At this time, the rotating ring 5 rotates around the axis of the guide sleeve 2 and moves the pressure block 8 at the same time. After the pressure block 8 moves, it squeezes the positioning block 10, so that the positioning block 10 drives the positioning rod 7, the positioning guide plate 6, and the rubber strip 9. The handheld rebound tester 1 is approached, and the positioning spring 11 is compressed. The multiple positioning guide plates 6 inside the guide sleeve 2 are used to simultaneously approach the handheld rebound tester 1 and contact with the handheld rebound tester 1, and the handheld rebound tester 1 is positioned and clamped to ensure that the axis of the handheld rebound tester 1 coincides with the axis of the guide sleeve 2. At this time, the handheld rebound tester 1 remains perpendicular to the concrete surface. Finally, the staff only needs to push the handheld rebound tester 1 to squeeze the concrete to complete the rebound test. During the test, the handheld rebound tester 1 always remains perpendicular to the concrete, thereby improving the accuracy of the test results.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A multifunctional rebound test device, comprising a handheld rebound tester (1) and a guide sleeve (2), wherein the handheld rebound tester (1) passes through the middle of the guide sleeve (2), and is characterized in that: The outer surface of the guide sleeve (2) is provided with a slide groove (3), a rotating rod (4) is slidably mounted on the inner side of the slide groove (3), a rotating ring (5) is rotatably mounted inside the guide sleeve (2), a plurality of pressure blocks (8) are fixedly mounted on the inner side of the rotating ring (5), a plurality of positioning guide plates (6) are mounted on the inner side of the guide sleeve (2), a positioning rod (7) is fixed on the outer surface of the positioning guide plate (6), one end of the positioning rod (7) is inserted into the guide sleeve (2) and a positioning block (10) is fixed on this end, a positioning spring (11) is sleeved on the outer side of the end of the positioning rod (7) connected to the positioning block (10), and the number of the positioning guide plates (6) is consistent with the number of the pressure blocks (8).

2. A multifunctional rebound testing device according to claim 1, characterized in that: The outer surface of the rotating ring (5) is provided with a slot, and one end of the rotating rod (4) is inserted into the inner side of the slot.

3. A multifunctional rebound testing device according to claim 1, characterized in that: Two limiting plates (12) are installed on the outer side of the end portion where the positioning rod (7) is connected to the positioning block (10); the limiting plates (12) are embedded in the inner wall of the guide sleeve (2) and connected to the guide sleeve (2) by screws.

4. A multifunctional rebound testing device according to claim 3, characterized in that: An inclined surface is provided at the end of the positioning block (10) facing the pressure block (8), and the inclination angle of the inclined surface is thirty to forty-five degrees.

5. The multifunctional rebound testing device according to claim 1, characterized in that: The inner surface of the positioning guide plate (6) is provided with a rubber strip (9), and the rubber strip (9) is connected to the positioning guide plate (6) by means of an adhesive.

6. A multifunctional rebound testing device according to claim 1, characterized in that: The upper and lower surfaces of the rotating rod (4) are both fixedly inlaid with second adsorption magnets (14), the inner side of the sliding groove (3) is inlaid with two first adsorption magnets (13) symmetrically distributed up and down, and the second adsorption magnet (14) is magnetically adsorbed and connected to the first adsorption magnet (13).

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