Concrete rebound apparatus

Abstract

The utility model relates to the technical field of concrete rebound instruments, and discloses a concrete rebound instrument which comprises a rebound instrument body, a knocking rod is arranged in an inner cavity of the rebound instrument body, a first movable plate and a second movable plate are fixedly installed on the knocking rod, a fixing plate is fixedly installed in the inner cavity of the rebound instrument body, and a fixing ring is fixedly installed in the inner cavity of the rebound instrument body. And a first spring is fixedly mounted on the fixing ring. According to the utility model, when the rotating wheel moves to a certain position, the rotating wheel can extrude the semicircular plate arranged in the inner cavity of the rectangular notch to move downwards under the assistance of the sliding rail until the pressing plate arranged on the guide block in the sliding rail extrudes the frequency sensor, so that the frequency sensor can transmit the frequency to the PLC; and when the number of times is displayed on the PLC by the number sensor, a sound can be made through the PLC, so that a worker is prompted that detection is needed when the number of times reaches a certain degree, and the device is relatively practical and suitable for wide popularization and use.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete rebound test hammer, in particular to a concrete rebound test hammer. Background Art

[0002] The concrete rebound tester is a testing device suitable for testing the strength of general building components, bridges and various concrete components. The principle of the concrete rebound tester for testing concrete strength is: the spring drives the impact hammer and the impact rod hits the concrete surface to generate the instantaneous elastic deformation of the restoring force, so that the impact hammer drives the pointer to rebound and indicate the rebound distance. The rebound distance is calculated as a percentage of the distance between the impact hammer and the impact rod before the impact, which is used as one of the indicators related to the concrete compressive strength to estimate the concrete compressive strength.

[0003] However, when the existing concrete rebound tester is testing concrete, when it detects a certain time, the rebound tester will often be damaged as the number of times accumulates. However, when the existing test reaches a certain level, the staff may forget to perform the test, which makes the rebound tester easy to be damaged during use.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0006] A concrete rebound tester comprises a rebound tester, wherein a knocking rod is arranged in an inner cavity of the rebound tester, a first movable plate and a second movable plate are fixedly mounted on the knocking rod, a fixed plate is fixedly mounted in an inner cavity of the rebound tester, a fixed ring is fixedly mounted in an inner cavity of the rebound tester, a first spring is fixedly mounted on the fixed ring, the other end of the first spring is fixedly connected to the first movable plate, a plurality of connecting rings arranged in a linear distribution are fixedly mounted on one end of the first movable plate away from the first spring, a second spring is fixedly mounted on one end of the second movable plate away from the first movable plate, the other end of the second spring is fixedly connected to the fixed plate, a push rod is arranged on the fixed plate, a mounting block is fixedly mounted on the first movable plate, a rotating mechanism is arranged on one side wall of the mounting block, and a sliding mechanism is arranged on the other side wall, a bolt hole is arranged on one side wall of the rebound tester, and a fixing bolt is meshedly arranged in the inner cavity of the bolt hole, a stopper is mounted on the fixing bolt, a dynamometer, a PLC controller and a switch are arranged on one side wall of the rebound tester, a circular notch is arranged on a side wall of the first movable plate close to the fixing ring, and a temperature sensor is arranged in the inner cavity of the circular notch.

[0007] As a preferred embodiment of the utility model, the rotating mechanism includes a rotating rod, bearings are provided at both ends of the rotating rod, baffles are installed on the bearings, the two baffles are fixedly installed on the mounting block, an L-shaped connecting plate is fixedly installed on the rotating rod, and torsion springs are provided on the rotating rod on both sides of the L-shaped connecting plate close to the two baffles.

[0008] As a preferred embodiment of the utility model, the sliding mechanism includes a slide groove, which is opened on the mounting block, and a slider is slidably installed on the slide groove, a connecting rod is fixedly installed above the slider, and the connecting rod is located below the L-shaped connecting plate, and a return spring is fixedly installed on one end of the slider away from the connecting rod, and the other end of the return spring is fixedly connected to the inner wall of the slide groove.

[0009] As a preferred embodiment of the utility model, the slide groove is respectively provided with guide grooves on both sides of the mounting block, and rotating wheels are fitted in the two guide grooves. A rotating rod is rotatably provided on one side wall opposite to the two rotating wheels, and the other end of the rotating rod is fixedly connected to the slider.

[0010] As a preferred embodiment of the utility model, the inner cavities of the two guide grooves are both provided with rectangular notches, the two rectangular notches are symmetrical to each other, and the inner cavities of the two rectangular notches are both provided with a reset mechanism.

[0011] As a preferred embodiment of the utility model, the reset mechanism includes two slide rails, and the two slide rails are respectively arranged on the opposite side walls of the rectangular slot cavity, the two slide rails are symmetrical to each other, and the two slide rail cavities are both slidably installed with guide blocks, and the opposite side walls of the two guide blocks are connected to each other, and semicircular plates and reset springs are arranged above and below, and a number sensor is arranged at the bottom of the two rectangular slot cavities.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] According to the utility model, when the L-shaped connecting plate flips downward, it can squeeze the connecting rod to drive the sliding mechanism to move downward. When the slider moves downward, the slider will be able to drive the rotating wheel to roll with the assistance of the rotating mechanism and the bearing. When the rotating wheel moves to a certain position, it can squeeze the semicircular plate arranged in the inner cavity of the rectangular groove and move downward with the assistance of the slide rail until the pressure plate arranged on the guide block in the slide rail is pressed on the number sensor. Therefore, the number sensor can transmit the number of times to the PLC controller until the number sensor displays a value of times on the PLC controller. At this time, it can make a sound through the PLC controller to remind the staff that it needs to be detected when it reaches a certain level.

[0014] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In the attached picture:

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model in cross-section (I);

[0018] Figure 3 This is a schematic diagram of the cross-sectional view (II) structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the utility model in cross-section (three);

[0020] Figure 5 This is a schematic diagram of the structure of the utility model in cross-section (four);

[0021] Figure 6 It is a schematic diagram of the local structure of the utility model at A;

[0022] Figure 7 This is a side view of the structure of the utility model;

[0023] Figure 8 It is a schematic diagram of the structure of the partial (I) of the utility model;

[0024] Fig. 9 It is a schematic diagram of the partial (II) structure of the utility model;

[0025] Fig.10 It is a schematic diagram of the structure of the partial (three) of the utility model;

[0026] Fig.11 It is a schematic diagram of the local structure of B of the utility model.

[0027] In the figure: 1. Rebound tester; 2. Tapping rod; 3. Dynamometer; 4. PLC controller; 5. Switch; 6. Fixing bolt; 7. First spring; 8. First movable plate; 9. Circular notch; 10. Temperature sensor; 11. Connecting ring; 12. Second movable plate; 13. Second spring; 14. Fixing plate; 15. Push rod; 16. Bolt hole; 17. Mounting block; 18. Baffle; 19. Bearing; 20. Torsion spring; 21. Rotating rod; 22. L-shaped connecting plate; 23. Baffle; 24. Sliding block; 25. Reset spring; 26. Connecting rod; 27. Rotating wheel; 28. Guide groove; 29. ​​Rectangular notch; 30. Semicircular plate; 31. Slide groove; 32. Slide rail; 33. Second reset spring; 34. Times sensor; 35. Fixing ring. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0029] like Figures 1 to 11 As shown, the concrete rebound test hammer comprises a rebound test hammer 1, a knocking rod 2 is arranged in the inner cavity of the rebound test hammer 1, a first movable plate 8 and a second movable plate 12 are fixedly installed on the knocking rod 2, a fixed plate 14 is fixedly installed in the inner cavity of the rebound test hammer 1, a fixed ring 35 is fixedly installed in the inner cavity of the rebound test hammer 1, a first spring 7 is fixedly installed on the fixed ring 35, the other end of the first spring 7 is fixedly connected to the first movable plate 8, a plurality of connecting rings 11 arranged in a linear distribution are fixedly installed on the end of the first movable plate 8 away from the first spring 7, a second spring 13 is fixedly installed on the end of the second movable plate 12 away from the first movable plate 8, and the second spring 7 is fixedly installed on the second movable plate 13. The other end of 13 is fixedly connected to the fixed plate 14, and the fixed plate 14 is provided with a push rod 15. A mounting block 17 is fixedly installed on the first movable plate 8, and a rotating mechanism is provided on one side wall of the mounting block 17, and a sliding mechanism is provided on the other side wall. A bolt hole 16 is provided on one side wall of the rebound hammer 1, and a fixing bolt 6 is meshedly provided in the inner cavity of the bolt hole 16, and a stopper 23 is installed on the fixing bolt 6. A dynamometer 3, a PLC controller 4 and a switch 5 are provided on one side wall of the rebound hammer 1. A circular notch 9 is provided on one side wall of the first movable plate 8 close to the fixed ring 35, and a temperature sensor 10 is provided in the inner cavity of the circular notch 9. When the L-shaped connecting plate 22 flips downward, it can squeeze the connecting rod 26 to drive the sliding mechanism to move downward. When the slider 24 moves downward, the slider 24 will be able to drive the rotating wheel 27 to roll with the assistance of the rotating mechanism and the bearing. When the rotating wheel 27 moves to a certain position, it can squeeze the semicircular plate 30 set in the inner cavity of the rectangular slot 29 and move downward with the assistance of the slide rail 32 until the pressure plate set on the guide block in the slide rail 32 is squeezed on the time sensor 34. Therefore, the time sensor 34 can transmit the time to the PLC controller 4 until the time sensor 34 displays a value of 2000 times on the PLC controller 4. At this time, it can make a sound through the PLC controller 4 to remind the staff that it needs to be tested when it reaches a certain level.

[0030] In a specific embodiment, the rotating mechanism includes a rotating rod 21, bearings 19 are provided at both ends of the rotating rod 21, baffles 18 are installed on the bearings 19, the two baffles 18 are fixedly installed on the mounting block 17, an L-shaped connecting plate 22 is fixedly installed on the rotating rod 21, and torsion springs 20 are provided on both sides of the L-shaped connecting plate 22 close to the two baffles 18 on the rotating rod 21. In this configuration, the installation position and components of the transmission mechanism are determined.

[0031] Further, the sliding mechanism includes a slide groove 31, which is provided on the mounting block 17, on which a slider 24 is slidably mounted, on which a connecting rod 26 is fixedly mounted, which is located below the L-shaped connecting plate 22, and on which a return spring 25 is fixedly mounted at one end of the slider 24 away from the connecting rod 26, and the other end of the return spring 25 is fixedly connected to the inner wall of the slide groove 31. In this configuration, the installation position and components of the sliding mechanism are determined.

[0032] Furthermore, the slide 31 is provided with guide grooves 28 on both sides of the mounting block 17, and the two guide grooves 28 are fitted with rotating wheels 27. A rotating rod is rotatably provided on one side wall opposite to the two rotating wheels 27, and the other end of the rotating rod is fixedly connected to the slider 24. In this configuration, the opening position and the installation position of the guide groove 28 and the rotating wheel 27 are determined.

[0033] Furthermore, the inner cavities of the two guide grooves 28 are both provided with rectangular notches 29, the two rectangular notches 29 are symmetrical to each other, and the inner cavities of the two rectangular notches 29 are both provided with reset mechanisms. In this configuration, the opening positions of the rectangular notches 29 are determined.

[0034] Furthermore, the reset mechanism includes two slide rails 32, which are respectively arranged on opposite side walls of the inner cavity of the rectangular slot 29, and the two slide rails 32 are symmetrical to each other. Guide blocks are slidably installed in the inner cavities of the two slide rails 32, and the opposite side walls of the two guide blocks are connected to each other, and semicircular plates 30 and reset springs 25 are arranged above and below, and a frequency sensor 34 is arranged at the bottom of the inner cavity of the two rectangular slots 29. In this setting, the installation position of the reset mechanism is determined.

[0035] The implementation principle of the concrete rebound tester of this embodiment is as follows: first, when the rebound tester 1 is used, during the normal use of the rebound tester 1, the top rod 15 inside it can squeeze the L-shaped connecting plate 22 to rotate with the assistance of the rotating mechanism. When the L-shaped connecting plate 22 is flipped downward, it can squeeze the connecting rod 26 to drive the sliding mechanism to move downward. When the slider 24 moves downward, the slider 24 will be able to drive the rotating wheel 27 to roll with the assistance of the rotating mechanism and the bearing. When the rotating wheel 27 moves to a certain position, it can squeeze the semicircular plate 30 set in the inner cavity of the rectangular notch 29 to move downward with the assistance of the slide rail 32 until the pressure plate set on the guide block in the slide rail 32 The squeeze is applied to the number sensor 34 at this time, so the number sensor 34 can transmit the number of times to the PLC controller 4 until the number sensor 34 displays a value of 2000 times on the PLC controller 4, at which time it can make a sound through the PLC controller 4. At the same time, because the inner cavity of the rebound tester 1 is provided with a temperature sensor 10, when the temperature detected by the temperature sensor 10 is transmitted to the PLC controller 4, when the temperature is high, the PLC controller 4 can make a sound (the temperature sensor 10 and the number sensor 34 transmit information to the PLC controller 4, and the sound emitted in the PLC controller 4 is transmitted through the alarm component, which are all existing technologies).

Claims

1. A concrete rebound test hammer, comprising a rebound test hammer (1), characterized in that: The inner cavity of the rebound hammer (1) is provided with a knocking rod (2), and a first movable plate (8) and a second movable plate (12) are fixedly mounted on the knocking rod (2); the inner cavity of the rebound hammer (1) is fixedly mounted with a fixing plate (14); the inner cavity of the rebound hammer (1) is fixedly mounted with a fixing ring (35), and a first spring (7) is fixedly mounted on the fixing ring (35); the other end of the first spring (7) is fixedly connected to the first movable plate (8); a plurality of linearly distributed connecting rings (11) are fixedly mounted on one end of the first movable plate (8) away from the first spring (7); a second spring (13) is fixedly mounted on one end of the second movable plate (12) away from the first movable plate (8); the other end of the second spring (13) is fixedly connected to the first movable plate (8); A top rod (15) is arranged on the fixed plate (14), a mounting block (17) is fixedly mounted on the first movable plate (8), a rotating mechanism is arranged on one side wall of the mounting block (17), and a sliding mechanism is arranged on the other side wall, a bolt hole (16) is arranged on one side wall of the rebound hammer (1), and a fixing bolt (6) is arranged in meshing engagement with the inner cavity of the bolt hole (16), a stopper (23) is arranged on the fixing bolt (6), a dynamometer (3), a PLC controller (4) and a switch (5) are arranged on one side wall of the rebound hammer (1), a circular notch (9) is arranged on one side wall of the first movable plate (8) close to the fixing ring (35), and a temperature sensor (10) is arranged in the inner cavity of the circular notch (9).

2. The concrete rebound test hammer according to claim 1, characterized in that: The rotating mechanism comprises a rotating rod (21), bearings (19) are arranged at both ends of the rotating rod (21), baffles (18) are mounted on the bearings (19), the two baffles (18) are fixedly mounted on the mounting block (17), an L-shaped connecting plate (22) is fixedly mounted on the rotating rod (21), and torsion springs (20) are arranged on the rotating rod (21) on both sides of the L-shaped connecting plate (22) close to the two baffles (18).

3. The concrete rebound test hammer according to claim 1, characterized in that: The sliding mechanism comprises a slide groove (31), wherein the slide groove (31) is formed on the mounting block (17), a slider (24) is slidably mounted on the slide groove (31), a connecting rod (26) is fixedly mounted above the slider (24), the connecting rod (26) is located below the L-shaped connecting plate (22), a return spring (25) is fixedly mounted on one end of the slider (24) away from the connecting rod (26), and the other end of the return spring (25) is fixedly connected to the inner wall of the slide groove (31).

4. The concrete rebound test hammer according to claim 3, characterized in that: The slide groove (31) is provided with guide grooves (28) on both sides of the mounting block (17), and rotating wheels (27) are fitted in the two guide grooves (28). A rotating rod is rotatably provided on one side wall opposite to the two rotating wheels (27), and the other end of the rotating rod is fixedly connected to the slider (24).

5. The concrete rebound test hammer according to claim 4, characterized in that: The inner cavities of the two guide grooves (28) are each provided with a rectangular notch (29), the two rectangular notches (29) are symmetrical to each other, and the inner cavities of the two rectangular notches (29) are each provided with a reset mechanism.

6. The concrete rebound test hammer according to claim 5, characterized in that: The reset mechanism comprises two slide rails (32), the two slide rails (32) are respectively arranged on opposite side walls of the inner cavity of the rectangular slot (29), the two slide rails (32) are symmetrical to each other, the inner cavities of the two slide rails (32) are both slidably mounted with guide blocks, and the opposite side walls of the two guide blocks are connected to each other, and semicircular plates (30) and reset springs (25) are arranged above and below, and a frequency sensor (34) is arranged at the bottom of the inner cavities of the two rectangular slots (29).

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