Concrete rebound detector

Abstract

The utility model belongs to the technical field of concrete detectors, and particularly relates to a concrete springback detector which comprises a base, a shell is arranged on the surface of the base, a pressure sensor, a compression spring, a sliding rod, a sleeve rod, a first sliding block, a second sliding block and an impact head are arranged in the shell, a pull rod is arranged on the surface of the first sliding block, and a pull rod is arranged on the surface of the second sliding block. And a buckle is arranged on the surface of the pull rod. According to the concrete springback detector, the shell of the base is vertically arranged, an impact head and a detection surface are vertically detected, the surface of a first sliding block and the surface of a second sliding block in the shell are slidably connected with the surface of a guide groove and the surface of a lantern ring correspondingly, and the movement direction of the impact head during springback is kept consistent with the axis direction of the shell; the technical problems that an existing device is directly operated in a handheld mode, it cannot be guaranteed that a rebound instrument is perpendicular to a concrete detection face during rebound, and errors are prone to being increased are solved.

Description

Technical Field

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

[0002] The rebound test hammer is widely used in concrete strength testing in the construction process of building construction, municipal engineering, road and bridge construction, etc. The basic principle of the rebound test hammer is to use a spring to drive a heavy hammer, which hits the impact rod in vertical contact with the concrete surface with constant kinetic energy, causing the local concrete to deform and absorb part of the energy, and the other part of the energy is converted into the rebound kinetic energy of the heavy hammer. When the rebound kinetic energy is fully converted into potential energy, the heavy hammer rebounds to the maximum distance, and the instrument displays the maximum rebound distance of the heavy hammer as the rebound value (the ratio of the maximum rebound distance to the initial length of the spring).

[0003] Existing concrete testers usually test the hardness of concrete after it is poured and formed to ensure that it meets the construction requirements, thereby ensuring the quality of the project. However, when using the commonly used rebound test hammer, it is usually operated directly by hand. During rebound, it is impossible to ensure that the rebound test hammer is perpendicular to the concrete test surface, which easily increases the error and is inconvenient to use. Utility Model Content

[0004] Based on the technical problem that the existing device is directly operated by hand, the rebound tester cannot be guaranteed to be perpendicular to the concrete wall surface during rebound, and the error is easily increased, the utility model proposes a concrete rebound detector.

[0005] The utility model provides a concrete rebound detector, comprising a base, a shell is arranged on the surface of the base, a slide groove is opened on the surface of the shell, a guide groove is opened on the inner wall of the shell, a sleeve ring is arranged on the inner wall of the shell, an end cover and a pressure rod are respectively arranged on the surface of the shell, a trigger is arranged on the surface of the pressure rod, a pressing spring is arranged on the outer side of the pressure rod, a pressure sensor, a compression spring, a sliding rod, a sleeve rod, a first slider, a second slider and an impact head are respectively arranged inside the shell, a pull rod is arranged on the surface of the first slider, and a buckle is arranged on the surface of the pull rod.

[0006] Preferably, the surface of the shell is fixedly connected to the surface of the base and the surface of the end cover respectively, the surface of the pull rod is slidably connected to the surface of the slide groove, and the surface of the buckle is fixedly connected to the surface of the pull rod.

[0007] Preferably, the surface of the trigger is fixedly connected to the surfaces of the two pressure rods and one end of the two pressure springs, respectively, the surface of the trigger is elastically connected to the surface of the outer shell through the pressure springs, the pressure springs are located on the outside of the pressure rods, the surface of the pressure rods is slidably connected to the surface of the outer shell, and the surface of the trigger is slidably connected to the surface of the buckle.

[0008] Preferably, the surface of the pressure sensor is respectively fixedly connected to the inner wall of the outer shell, the surface of the end cover, one end of the sliding rod and one end of the compression spring, the inner wall of the sleeve rod is slidably connected to the surface of the sliding rod, and the sliding rod and the sleeve rod are both located on the inner side of the compression spring.

[0009] Preferably, the surface of the first slider is respectively fixedly connected to one end of the sleeve rod, the other end of the compression spring, the surface of the second slider and the surface of the pull rod, and the surface of the first slider is slidably connected to the inner wall of the guide groove.

[0010] Preferably, the surface of the collar is fixedly connected to the inner wall of the shell, the surface of the second slider is fixedly connected to the surface of the impact head, and the surface of the second slider is slidably connected to the surface of the collar.

[0011] The beneficial effects of the utility model are:

[0012] By setting the shell of the base vertically, the impact head is detected perpendicularly to the detection surface, the surface of the first slider and the surface of the second slider inside the shell are slidably connected to the surface of the guide groove and the surface of the ring respectively, and the movement direction of the impact head when it rebounds is consistent with the axial direction of the shell, which solves the technical problem that the existing device is directly operated by hand, cannot ensure that the rebound tester is perpendicular to the concrete detection surface when rebounding, and is prone to increase the error. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of a concrete rebound detector proposed by the utility model;

[0014] Figure 2 A three-dimensional diagram of the first sliding block structure of a concrete rebound detector proposed by the utility model;

[0015] Figure 3 This is a three-dimensional diagram of the ring structure of a concrete rebound detector proposed by the utility model.

[0016] In the figure: 1. base; 2. shell; 3. guide groove; 4. collar; 5. end cover; 6. pressure rod; 7. trigger; 8. pressing spring; 9. pressure sensor; 10. compression spring; 11. slide rod; 12. sleeve rod; 13. first slide block; 14. second slide block; 15. impact head; 16. pull rod; 17. buckle; 18. slide groove. DETAILED DESCRIPTION

[0017] 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.

[0018] Reference Figure 1-Figure 3 A concrete rebound detector comprises a base 1, a shell 2 is arranged on the surface of the base 1, a slide groove 18 is opened on the surface of the shell 2, a guide groove 3 is opened on the inner wall of the shell 2, a collar 4 is arranged on the inner wall of the shell 2, an end cover 5 and a pressure rod 6 are arranged on the surface of the shell 2, a trigger 7 is arranged on the surface of the pressure rod 6, a pressing spring 8 is arranged on the outer side of the pressure rod 6, a pressure sensor 9, a compression spring 10, a sliding rod 11, a sleeve rod 12, a first slider 13, a second slider 14 and an impact head 15 are arranged inside the shell 2, a pull rod 16 is arranged on the surface of the first slider 13, and a buckle 17 is arranged on the surface of the pull rod 16.

[0019] The surface of the housing 2 is fixedly connected to the surface of the base 1 and the surface of the end cover 5 respectively, the surface of the pull rod 16 is slidably connected to the surface of the slide groove 18 , and the surface of the buckle 17 is fixedly connected to the surface of the pull rod 16 .

[0020] Furthermore, the surface of the housing 2 is arranged perpendicular to the surface of the base 1 .

[0021] The surface of the trigger 7 is fixedly connected to the surfaces of the two pressure rods 6 and one end of the two pressing springs 8 respectively. The surface of the trigger 7 is elastically connected to the surface of the outer shell 2 through the pressing springs 8. The pressing springs 8 are located on the outside of the pressure rods 6. The surface of the pressure rods 6 is slidably connected to the surface of the outer shell 2. The surface of the trigger 7 is slidably connected to the surface of the buckle 17.

[0022] Furthermore, the trigger 7 reciprocates toward the inside of the housing 2 through the pressure rod 6 .

[0023] The surface of the pressure sensor 9 is fixedly connected to the inner wall of the housing 2, the surface of the end cover 5, one end of the slide rod 11 and one end of the compression spring 10 respectively, the inner wall of the sleeve rod 12 is slidably connected to the surface of the slide rod 11, and the slide rod 11 and the sleeve rod 12 are both located on the inner side of the compression spring 10.

[0024] Furthermore, the pressure sensor 9 receives the rebound force of the impact head 15 .

[0025] The surface of the first slider 13 is fixedly connected to one end of the sleeve rod 12 , the other end of the compression spring 10 , the surface of the second slider 14 and the surface of the pull rod 16 , and the surface of the first slider 13 is slidably connected to the inner wall of the guide groove 3 .

[0026] Furthermore, the movement direction of the first sliding block 13 is consistent with the axial direction of the housing 2 .

[0027] The surface of the collar 4 is fixedly connected to the inner wall of the housing 2 , the surface of the second slider 14 is fixedly connected to the surface of the impact head 15 , and the surface of the second slider 14 is slidably connected to the surface of the collar 4 .

[0028] Furthermore, the movement direction of the second slider 14 is consistent with the axial direction of the housing 2 .

[0029] By setting the shell 2 of the base 1 vertically, the impact head 15 is detected perpendicularly to the detection surface, the surface of the first slider 13 and the surface of the second slider 14 inside the shell 2 are slidably connected to the surface of the guide groove 3 and the surface of the ring 4 respectively, and the movement direction of the impact head 15 when it rebounds is consistent with the axial direction of the shell 2, which solves the technical problem that the existing device is directly operated by hand, cannot ensure that the rebound tester is perpendicular to the concrete wall surface when rebounding, and is prone to increase the error.

[0030] Working principle:

[0031] Before use, place the lower surface of the base 1 against the concrete detection surface, pull the pull rod 16 toward the end cover 5, connect the inner wall of the buckle 17 with the surface of the trigger 7, and the pull rod 16 drives the first slider 13 to slide upward along the surface of the guide groove 3. The surface of the second slider 14 slides through the surface of the collar 4 to keep the rebound detection path vertical. The impact head 15 enters the interior of the shell 2, and the surface of the second slider 14 drives the compression spring 10 and the sleeve rod 12 to move upward. The other end of the compression spring 10 is fixedly connected to the surface of the pressure sensor 9, and the surface of the sleeve rod 12 slides upward along the surface of the slide rod 11. The surface of the pressure sensor 9 is fixedly connected to the surface of the end cover 5. Press the trigger 7 downward to drive the pressure rod 6 to slide inward. The trigger 7 releases the buckle 17, and the compression spring 10 resets and pushes the first slider 13 to slide downward along the guide groove 3. The impact head 15 hits the concrete detection surface. The impact head 15 rebounds and drives the first slider 13 to slide upward, compressing the compression spring 10, and the rebound force is collected by the pressure sensor 9 at the other end of the compression spring 10.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A concrete rebound detector, comprising a base (1), characterized in that: The surface of the base (1) is provided with a shell (2), the surface of the shell (2) is provided with a slide groove (18), the inner wall of the shell (2) is provided with a guide groove (3), the inner wall of the shell (2) is provided with a sleeve ring (4), the surface of the shell (2) is provided with an end cover (5) and a pressure rod (6), the surface of the pressure rod (6) is provided with a trigger (7), the outer side of the pressure rod (6) is provided with a pressing spring (8), the inside of the shell (2) is provided with a pressure sensor (9), a compression spring (10), a slide rod (11), a sleeve rod (12), a first slider (13), a second slider (14) and an impact head (15), the surface of the first slider (13) is provided with a pull rod (16), and the surface of the pull rod (16) is provided with a buckle (17).

2. A concrete rebound detector according to claim 1, characterized in that: The surface of the shell (2) is fixedly connected to the surface of the base (1) and the surface of the end cover (5), respectively; the surface of the pull rod (16) is slidably connected to the surface of the slide groove (18); and the surface of the buckle (17) is fixedly connected to the surface of the pull rod (16).

3. A concrete rebound detector according to claim 1, characterized in that: The surface of the trigger (7) is respectively fixedly connected to the surfaces of the two pressure rods (6) and one end of the two pressing springs (8); the surface of the trigger (7) is elastically connected to the surface of the housing (2) through the pressing springs (8); the pressing springs (8) are located on the outside of the pressure rods (6); the surface of the pressure rods (6) is slidably connected to the surface of the housing (2); and the surface of the trigger (7) is slidably connected to the surface of the buckle (17).

4. A concrete rebound detector according to claim 1, characterized in that: The surface of the pressure sensor (9) is respectively fixedly connected to the inner wall of the housing (2), the surface of the end cover (5), one end of the slide rod (11) and one end of the compression spring (10); the inner wall of the sleeve rod (12) is slidably connected to the surface of the slide rod (11); and the slide rod (11) and the sleeve rod (12) are both located on the inner side of the compression spring (10).

5. The concrete rebound detector according to claim 1, characterized in that: The surface of the first slider (13) is respectively fixedly connected to one end of the sleeve rod (12), the other end of the compression spring (10), the surface of the second slider (14) and the surface of the pull rod (16), and the surface of the first slider (13) is slidably connected to the inner wall of the guide groove (3).

6. A concrete rebound detector according to claim 1, characterized in that: The surface of the collar (4) is fixedly connected to the inner wall of the outer shell (2), the surface of the second slider (14) is fixedly connected to the surface of the impact head (15), and the surface of the second slider (14) is slidably connected to the surface of the collar (4).

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