Concrete compressive strength rebound detector

Abstract

The utility model relates to a concrete compressive strength rebound detector. The technical problem that an existing springback detector is unreasonable in design is solved. The concrete compressive strength springback detector comprises a detector, the end of the detector is provided with an elastically-extending springback rod, the end, away from the detector, of the springback rod protrudes out of the end of the detector all the time, and the end of the detector is provided with a circumferentially-concave positioning groove; the auxiliary positioning assembly comprises a fixing disc, an adjusting belt hinged to the fixing disc and a length adjusting assembly arranged on the adjusting belt, a flexible rope is arranged at the end, away from the fixing disc, of the adjusting belt, and a fixing buckle connected to the positioning groove in a sleeving mode is arranged on the flexible rope. According to the concrete compressive strength springback detector, the fixed disc is designed to form a fixed reference fulcrum on a concrete test surface, and meanwhile, the springback rod is used as a rotating point for switching and adjusting the test position, so that the test efficiency is improved, the pulling problem of the rotating adjusting belt is avoided, and the short-distance adjusting capability is provided.

Description

Technical Field

[0001] This utility model belongs to the field of concrete and relates to a concrete compressive strength rebound detector. Background Technology

[0002] For example, Chinese patent literature discloses a positioning device for a concrete rebound hammer [202320782633.7], which includes a concrete rebound hammer body, a pushing member on the concrete rebound hammer body, a guide member disposed on the outside of the concrete rebound hammer body, a plurality of positioning members disposed on the guide member, and a support member disposed on the guide member.

[0003] The drawbacks of the above technical solution are that changing the detection position causes significant damage to the cavity surface, and the spacing between the detection positions cannot be adjusted. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a concrete compressive strength rebound detector.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A concrete compressive strength rebound detector includes:

[0007] The detector has an elastically extended striking rod at its end, with the end of the striking rod away from the detector always protruding from the end of the detector. The end of the detector has a circumferentially recessed positioning groove.

[0008] The auxiliary positioning component includes a fixed plate, an adjusting belt hinged to the fixed plate, a length adjusting component disposed on the adjusting belt, and a flexible rope disposed at one end of the adjusting belt away from the fixed plate, wherein a fixing buckle is disposed on the flexible rope and fitted into the positioning groove.

[0009] Furthermore, the length adjustment component includes strip-shaped holes disposed on the adjustment belt, and stop notches disposed at intervals in the strip-shaped holes.

[0010] Furthermore, the length adjustment component includes two straps spaced apart on the adjustment belt, a stop hole spaced apart on either strap, and an elastic protrusion on the other strap that elastically engages with the stop hole.

[0011] Furthermore, the fixing plate is a suction cup that acts on the concrete test surface.

[0012] Furthermore, a positioning pin is provided in the middle of the fixed plate.

[0013] Furthermore, the fixing buckle is an elastic element, and the cross-sectional shape of the fixing buckle is O-shaped or C-shaped.

[0014] Furthermore, the detector is provided with a guide channel for the impact rod to pass through, and an impact hammer is provided in the guide channel and sleeved on the outside of the impact rod. An electromagnetic trigger is provided at the end of the guide channel away from the impact rod, which acts on the end of the impact hammer.

[0015] Compared with existing technologies, this concrete compressive strength rebound detector is designed with a fixed plate forming a fixed reference fulcrum on the concrete test surface. At the same time, the test position is adjusted by rotating the impact rod, eliminating the original pre-test point marking process and improving test efficiency. In addition, the flexible rope adds flexibility between the adjustment belt and the fixed buckle, increasing the degree of freedom at the end of the fixed buckle, avoiding the problem of pulling on the adjustment belt when rotating, and providing short-distance adjustment capability. Attached Figure Description

[0016] Figure 1 A schematic diagram of a concrete compressive strength rebound detector provided by this utility model.

[0017] Figure 2 for Figure 1 A schematic diagram of the bottom structure of a concrete compressive strength rebound detector.

[0018] Figure 3 for Figure 1 A schematic diagram of the length adjustment component of the concrete compressive strength rebound detector.

[0019] Figure 4 for Figure 1 A schematic diagram of the structure of the concrete compressive strength rebound detector.

[0020] In the diagram, 10 is the detector; 11 is the impact rod; 12 is the positioning groove; 13 is the guide channel; 14 is the impact hammer; 15 is the electromagnetic trigger; 20 is the auxiliary positioning component; 21 is the fixing plate; 211 is the suction cup; 212 is the positioning pin; 22 is the adjusting belt; 23 is the flexible rope; 24 is the fixing buckle; 30 is the length adjusting component; 31 is the strip hole; 32 is the gear notch; 33 is the strap; 34 is the gear hole; and 35 is the elastic protrusion. Detailed Implementation

[0021] Please see Figures 1 to 4This is a schematic diagram of a concrete compressive strength rebound detector provided by this utility model. The concrete compressive strength rebound detector includes: a detector 10, and an auxiliary positioning component 20 connected to the outside of the detector 10. It can be imagined that the concrete compressive strength rebound detector also includes other functional components and specific structures, such as electrical connection components, installation structures, etc., which are all technologies known to those skilled in the art, and therefore will not be described in detail here.

[0022] The working principle of the detector 10 is based on existing technology, or an existing detector can be directly selected. Optimally, the detector 10 has a guide channel 13 for passage inside, and an elastically extending impact rod 11 at the output end of the detector 10. The elastic rod is a split structure with elastic connection, which achieves impact buffering and reduces the internal installation space occupied. The impact rod 11 can move axially along the guide channel 13. The outer end of the impact rod 11 has an arc surface that acts on the concrete test surface. The impact rod 11 abuts against the concrete test surface and moves inward. An impact hammer 14 is also provided in the guide channel 13, sleeved outside the impact rod 11. One end of the impact hammer 14 is elastically connected to the output end of the detector 10 through a spring. The impact hammer 14 and the impact rod 11 have a limiting device. In this embodiment, the limiting device is a hook structure, which is existing technology in the field. When the impact rod 11 moves inward, the impact hammer 14 moves synchronously to the rear end. After the impact hammer 14 reaches a specified distance, the impact hammer 14 disengages from the impact rod 11, thus triggering the device. An electromagnetic trigger 15 is provided at the end of the guide channel 13 away from the impact rod 11, which acts on the end of the impact hammer 14, replacing the original rear spring of the impact hammer 14. The electromagnetic trigger 15 does not run before triggering, reducing the elastic resistance of manually driving the impact hammer 14. It can pay more attention to the changes in the detection point during the test. When the impact hammer 14 approaches the trigger point, the electromagnetic trigger 15 runs to provide or increase the kinetic energy of the impact hammer 14, making up for the potential energy lost by the separate impact rod 11. It can increase the test comparison conditions. After the impact hammer 14 is triggered, the test data is obtained on the display screen outside the detector 10.

[0023] It should be noted that the end of the striking rod 11 furthest from the detector 10 always protrudes beyond the end of the detector 10, increasing the movement guidance of the striking rod 11 and preventing problems such as jamming after the striking rod 11 is fully embedded. A circumferentially recessed positioning groove 12 is provided at the exposed end of the detector 10. This positioning groove 12 is described in detail in conjunction with the auxiliary positioning component 20 described below.

[0024] The auxiliary positioning component 20 includes a fixing plate 21, one end of which is columnar and hinged to the adjusting belt 22. In this embodiment, the fixing plate 21 is a suction cup 211 acting on the concrete test surface, which presses and adheres to the concrete test surface to form a fixed reference fulcrum. Optimally, a positioning pin 212 is provided in the middle of the fixing plate 21. The positioning pin 212 increases the vertical adsorption shape of the fixing plate 21, increases the fixing capacity during the adsorption process of the fixing plate 21, and avoids the problem of force displacement.

[0025] In other embodiments, the fixing plate 21 can also be a sticky plate structure with an adhesive surface, achieving the same testing effect as the suction cup 211.

[0026] An adjusting band 22, typically made of silicone material, is hinged to the fixed plate 21. This band has a degree of hardness and malleability. A flexible rope 23 is located at the end of the adjusting band 22 furthest from the fixed plate 21. A fixing buckle 24, which is fitted onto the flexible rope 23, is attached to the positioning groove 12. The fixing buckle 24 is connected to the impact rod 11, allowing for adjustment of the test position using the impact rod 11 as a rotation point. This facilitates tests such as circular array tests or rectangular array tests, eliminating the need for pre-marking test points and improving testing efficiency. In other embodiments, the fixing buckle 24 can also be connected to the housing or external frame of the detector 10.

[0027] The flexible rope 23 adds flexibility and variability between the adjusting belt 22 and the fixed buckle 24, increases the degree of freedom at the end of the fixed buckle 24, avoids the problem of pulling when rotating the adjusting belt 22, and provides short-distance adjustment capability.

[0028] The auxiliary positioning component 20, which is adjusted by rotating the adjustment belt 22, includes a length adjustment component 30 on the adjustment belt 22. In this embodiment, the length adjustment component 30 includes a strip-shaped hole 31 on the adjustment belt 22 and stop notches 32 spaced apart in the strip-shaped hole 31. The adjustment belt 22 is a single elongated structure, and each stop notch 32 represents a different adjustment interval. The rotation radius of the fixing buckle 24 is adjusted by the lateral movement of the hinge point of the fixing plate 21 in the strip-shaped hole 31, thus avoiding damage to the wall surface structure.

[0029] In other embodiments, please refer to Figure 3 The length adjustment component 30 includes two straps 33 spaced apart on the adjustment belt 22, a stop hole 34 spaced apart on either strap 33, and an elastic protrusion 35 on the other strap 33 that elastically engages with the stop hole 34. The actual length of the adjustment belt 22 is adjusted by the cooperation between the elastic protrusion 35 and the stop hole 34.

[0030] In this embodiment, the fixing buckle 24 is made of elastic material, and the cross-sectional shape of the fixing buckle 24 is O-shaped or C-shaped. The O-shaped fixing buckle 24 is installed by a socket connection, and the C-shaped fixing buckle 24 is installed by a plug connection.

[0031] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A concrete compressive strength rebound detector, characterized in that, include: The detector (10) has an elastically extended striking rod (11) at its end. The end of the striking rod (11) away from the detector (10) always protrudes from the end of the detector (10). The end of the detector (10) has a circumferentially recessed positioning groove (12). The auxiliary positioning component (20) includes a fixed plate (21), an adjustment belt (22) hinged to the fixed plate (21), a length adjustment component (30) provided on the adjustment belt (22), and a flexible rope (23) provided at one end of the adjustment belt (22) away from the fixed plate (21), and a fixing buckle (24) sleeved on the flexible rope (23) and connected to the positioning groove (12).

2. The concrete compressive strength rebound detector according to claim 1, characterized in that, The length adjustment component (30) includes a strip hole (31) disposed on the adjustment belt (22) and a stop notch (32) disposed at intervals in the strip hole (31).

3. The concrete compressive strength rebound detector according to claim 1, characterized in that, The length adjustment component (30) includes two straps (33) spaced apart on the adjustment belt (22), a stop hole (34) spaced apart on any one of the straps (33), and an elastic protrusion (35) on the other strap (33) that elastically engages with the stop hole (34).

4. The concrete compressive strength rebound detector according to claim 2 or 3, characterized in that, The fixed plate (21) is a suction cup (211) that acts on the concrete test surface.

5. The concrete compressive strength rebound detector according to claim 4, characterized in that, The fixing plate (21) is provided with a positioning pin (212) in the middle.

6. The concrete compressive strength rebound detector according to claim 1, characterized in that, The fixing buckle (24) is an elastic element, and the cross-sectional shape of the fixing buckle (24) is O-shaped or C-shaped.

7. The concrete compressive strength rebound detector according to claim 1, characterized in that, The detector (10) has a guide channel (13) for the ballistic rod (11) to pass through. A ballistic hammer (14) is set in the guide channel (13) and sleeved on the outside of the ballistic rod (11). An electromagnetic trigger (15) acting on the end of the ballistic hammer (14) is provided at the end of the guide channel (13) away from the ballistic rod (11).

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