Extensible penetration test type attached concrete strength resiliometer

Abstract

The invention relates to a stretching sounding type attached concrete strength resiliometer, which comprises an attached mechanism, one end of which is used for connecting a moving mechanism; one end of the telescopic mechanism is connected with the other end of the attachment mechanism, a fixing mechanism is arranged at the other end of the telescopic mechanism, and the telescopic mechanism is used for enabling the fixing mechanism to be close to an area to be detected; the self-adaptive detection mechanism is movably connected with the fixing mechanism and comprises a surface plate and a springback mechanism, a through hole is formed in the geometric center of the surface plate, an antenna rod is arranged at one end of the surface plate around the through hole, the springback mechanism is arranged at the position, corresponding to the through hole, of the other end of the surface plate, and a hinge rod is arranged around the springback mechanism; and the hinge rod is movably connected with the fixing mechanism. Through the attachment mechanism, the telescopic mechanism and the self-adaptive detection mechanism, the whole process of concrete strength detection from positioning, sounding to data analysis is automatic, and original manual detection is replaced, so that the detection precision and efficiency are improved.

Description

Technical Field

[0001] The present application relates to the technical field of concrete testing instruments, and in particular to an extension-contact penetrating type attached concrete strength and rebound test hammer. Background Art

[0002] The rebound hammer is suitable for testing the strength of general building concrete components, bridges, tunnels and various concrete component plates, beams, columns and bridge frames. During the operation of the rebound hammer, you should pay attention to the posture of holding the rebound hammer. Hold the middle part of the rebound hammer with one hand to straighten it; hold the tail of the instrument with the other hand to apply pressure to the instrument, which also serves as an auxiliary straightening function.

[0003] Currently, testing is often performed using a handheld rebound hammer, but this method has the following drawbacks: 1) Manual inspection is inefficient, and incorrect hand-holding posture can lead to errors in the inspection results. 2) Manual inspection is limited by the operating space and angle verticality, and cannot effectively inspect areas at high altitudes, near edges, or in complex construction environments; 3) Manual inspection requires manual recording of inspection data, which is very inconvenient. Summary of the Invention

[0004] Based on this, it is necessary to provide a stretch-contact type attached concrete strength rebound test hammer to overcome the defects mentioned in the above background technology.

[0005] An extension penetration type attached concrete strength rebound test hammer, comprising: an attachment mechanism, one end of which is used to connect to the moving mechanism; a telescopic mechanism, one end of which is connected to the other end of the attachment mechanism, and the other end of which is provided with a fixing mechanism, the telescopic mechanism being used to bring the fixing mechanism close to the area to be detected; and An adaptive detection mechanism is movably connected to the fixing mechanism. The adaptive detection mechanism includes a plane plate and a rebound mechanism. A through hole is opened at the geometric center of the plane plate, one end of which is provided with a tentacles rod around the through hole, and the other end of the plane plate is provided with a rebound mechanism at a position corresponding to the through hole. A hinge rod is provided around the rebound mechanism, and the hinge rod is movably connected to the fixing mechanism.

[0006] As a preferred embodiment of the extension penetration type attached concrete strength test hammer in the present invention, the attachment mechanism includes: A base plate, with fixing devices provided at both ends of the base plate; a driving mechanism, disposed at one end of the base plate; and The control unit is arranged on one side of the driving mechanism and is used to control the driving mechanism.

[0007] As a preferred embodiment of the extension penetration type attached concrete strength test hammer in the present invention, the driving mechanism includes: Fixed base; and A driving motor is provided on the fixed base, and an output end of the driving motor extends into the fixed base.

[0008] As a preferred embodiment of the extension-contact penetrating type attached concrete strength test hammer in the present invention, the telescopic mechanism includes: a first robotic arm, one end of which is rotatably connected to the fixed base, and a driving motor drives the first robotic arm to rotate; a second robotic arm, one end of which is rotatably connected to the other end of the first robotic arm and is connected to the first robotic arm via a first hydraulic rod; and One end of the third robotic arm is rotatably connected to the other end of the second robotic arm, and is connected to the second robotic arm through a second hydraulic rod.

[0009] As a preferred embodiment of the extension penetration type attached concrete strength test hammer in the present invention, the fixing mechanism includes: base plate; and The umbrella-shaped frame is disposed between the base plate and the other end of the third mechanical arm, and is used to connect the base plate and the third mechanical arm.

[0010] As a preferred embodiment of the extension-contact penetrating type attached concrete strength rebound test hammer in the present invention, a mounting hole is provided in the middle of the base plate, and a movable sleeve is provided around the mounting hole at the connecting end thereof with the umbrella-shaped frame.

[0011] As a preferred embodiment of the extension-contact-type attached concrete strength rebound test hammer in the present invention, the antenna rod is arranged at the edge of the plane plate, and a contact pressure feedback sensor is provided at the end thereof, and the contact pressure feedback sensor is connected to the control unit.

[0012] As a preferred embodiment of the extension penetration type attached concrete strength and rebound test hammer in the present invention, protective covers are provided at positions corresponding to the plane plate and the rebound mechanism.

[0013] As a preferred embodiment of the extension penetration type attached concrete strength rebound test hammer in the present invention, the rebound mechanism includes: a rebound hammer body, with its testing end facing the through hole; and a telescopic motor, disposed between the fixed end of the rebound hammer body and the protective cover; The rebound tester body and the telescopic motor are connected to the control unit via a data line.

[0014] As a preferred embodiment of the extension-contact penetrating attached concrete strength and rebound test hammer in the present invention, one end of the hinge rod is arranged in a movable sleeve, and the other end thereof is provided with a universal ball bearing platform, which is directly connected to the plane plate or through a cross slide.

[0015] Beneficial effects of the present invention: The present invention realizes the automation of the entire process of concrete strength detection from positioning, probing to data analysis through the attachment mechanism, telescopic mechanism and adaptive detection mechanism, replacing the original manual detection, thereby improving the detection accuracy and efficiency; The present invention uses an attachment mechanism and a telescopic mechanism to install the rebound tester on the surface of a special-shaped steel structure of a large-scale tooling such as a building construction machine and a climbing formwork frame, thereby realizing the strength test of concrete in areas at high altitudes, near edges or in complex construction environments. The adaptive detection mechanism in the present invention is connected to the control unit in the attachment mechanism to realize automatic recording and uploading of detection data, thereby reducing manual operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of the attached concrete strength rebound test hammer in the embodiment of the present application; Figure 2 This is a structural diagram of the attachment mechanism in an embodiment of the present application; Figure 3 This is a schematic diagram of the structure of the driving motor in the embodiment of the present application; Figure 4 This is a schematic structural diagram of the telescopic mechanism in an embodiment of the present application; Figure 5 This is a structural diagram of the fixing mechanism in an embodiment of the present application; Figure 6 This is one of the structural diagrams of the adaptive detection mechanism in the embodiment of the present application; Figure 7 This is the second structural diagram of the adaptive detection mechanism in the embodiment of the present application; Figure 8 This is the third structural diagram of the adaptive detection mechanism in the embodiment of the present application; Figure 9 This is the fourth structural diagram of the adaptive detection mechanism in the embodiment of the present application; Figure 10This is a schematic diagram of the structure of the adaptive detection mechanism in the embodiment of the present application when it contacts the concrete; Description of reference numerals: 1000, attachment mechanism; 1100, base plate; 1200, driving mechanism; 1210, fixed base; 1220, driving motor; 1300, control unit; 2000, telescopic mechanism; 2100, first robotic arm; 2200, second robotic arm; 2300, third robotic arm; 2400, first hydraulic rod; 2500, second hydraulic rod; 3000, fixing mechanism; 3100, base plate; 3200, umbrella-shaped frame; 3300, movable sleeve; 4000, adaptive detection mechanism; 4100, antenna rod; 4200, flat plate; 4300, rebound mechanism; 4310, rebound tester body; 4320, telescopic motor; 4400, protective cover; 4500, hinge rod; 4600, universal ball bearing platform; 4700, cross slide. DETAILED DESCRIPTION

[0018] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0019] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0021] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0022] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0024] Example This embodiment provides a stretch-contact type attached concrete strength rebound test hammer, such as Figure 1 As shown, the device comprises an attachment mechanism 1000, a telescopic mechanism 2000, a fixing mechanism 3000, and an adaptive detection mechanism 4000. One end of the attachment mechanism 1000 is used to connect to the moving mechanism; one end of the telescopic mechanism 2000 is connected to the other end of the attachment mechanism 1000, and the fixing mechanism 3000 is arranged at the other end thereof. The telescopic mechanism 2000 is used to bring the fixing mechanism 3000 close to the area to be detected; the adaptive detection mechanism 4000 is movably connected to the fixing mechanism 3000 and comprises a flat plate 4200 and a rebound mechanism 4300. The flat plate 4200 has a through hole at its geometric center, one end of which is provided with a tentacles rod 4100 surrounding the through hole, and the other end of which is provided with a rebound mechanism 4300 at a position corresponding to the through hole. A hinge rod 4500 is provided around the rebound mechanism 4300, and the hinge rod 4500 is movably connected to the fixing mechanism 3000.

[0025] The attachment mechanism 1000 is used to fix the entire device on the mobile mechanism. While fixing the entire device, it also facilitates detection of areas that are difficult to detect manually. The fixing mechanism 3000 is used to install the adaptive detection mechanism 4000, and the telescopic mechanism 2000 is used to make the fixing mechanism 3000 and the adaptive detection mechanism 4000 close to the area to be detected.

[0026] like Figure 2 As shown, the attachment mechanism 1000 includes a base plate 1100, a driving mechanism 1200 and a control unit 1300, and fixing devices are provided at both ends of the base plate 1100; the driving mechanism 1200 is arranged at one end of the base plate 1100; the control unit 1300 is arranged on one side of the driving mechanism 1200 and is used to control the driving mechanism 1200.

[0027] The attachment mechanism 1000 utilizes a high-strength, removable flange fixture. The base plate 1100 is mounted to the irregularly shaped steel structure of large-scale tooling, such as a building construction machine or climbing formwork frame. The base plate 1100 is connected to the large-scale tooling, such as the building construction machine or climbing formwork frame, via the fixture. The drive mechanism 1200 is used to rotate the telescopic mechanism 2000.

[0028] The driving mechanism 1200 includes a fixed base 1210 and a driving motor 1220 . The driving motor 1220 is disposed on the fixed base 1210 , and an output end thereof extends into the fixed base 1210 .

[0029] The fixed base 1210 includes a pair of symmetrically spaced clamping plates, and one end of the telescopic mechanism 2000 is disposed between the pair of clamping plates. Figure 3 As shown, the output end of the driving motor 1220 is an external gear disc to ensure that it is not affected by the environment and dust pollution.

[0030] The control unit 1300 is a dual-core controller built around an industrial-grade PLC and an embedded ARM processor, enabling motion trajectory planning for the telescopic mechanism 2000, closed-loop pressure control of the hydraulic system, and automated execution of the inspection process. Users can preset inspection points and trigger single / continuous inspection instructions through a handheld terminal or PC-based HMI interface. The control unit 1300 is externally powered and internally connected to the drive mechanism 1200, telescopic mechanism 2000, and adaptive inspection mechanism 4000. The control unit 1300's chip is embedded with a 4G module, providing network data transmission capabilities. Upon receiving server instructions and executing inspection tasks, it coordinates the drive mechanism 1200, telescopic mechanism 2000, and adaptive inspection mechanism 4000 to achieve the inspection objective. After the inspection is complete, the module is responsible for transmitting data to the server and driving the drive mechanism 1200, telescopic mechanism 2000, and adaptive inspection mechanism 4000, placing the entire structure in a tightened standby state.

[0031] like Figure 4 As shown, the telescopic mechanism 2000 includes a first robotic arm 2100, a second robotic arm 2200, a third robotic arm 2300, a first hydraulic rod 2400, and a second hydraulic rod 2500. One end of the first robotic arm 2100 is rotatably connected to the fixed base 1210, and the drive motor 1220 drives the first robotic arm 2100 to rotate; one end of the second robotic arm 2200 is rotatably connected to the other end of the first robotic arm 2100 and is connected to the first robotic arm 2100 via the first hydraulic rod 2400; one end of the third robotic arm 2300 is rotatably connected to the other end of the second robotic arm 2200 and is connected to the second robotic arm 2200 via the second hydraulic rod 2500.

[0032] The telescopic mechanism 2000 is a multi-degree-of-freedom robotic arm system consisting of three robotic arms and two hydraulic rods. The first robotic arm 2100 is equipped with a gear at its connection to the fixed base 1210 and is driven by a drive motor 1220. The second robotic arm 2200 and the third robotic arm 2300 are driven by a first hydraulic rod 2400 and a second hydraulic rod 2500, respectively. The mechanism employs a hybrid series-parallel configuration (the first and second robotic arms 2100 and 2200 are mechanically connected in series to achieve a wide range of extension, while the third robotic arm 2300 is connected in parallel to provide fine-tuning at the end). The first and second hydraulic rods 2400 and 2500 are arranged on opposite sides to achieve wide-angle actuation. Both the first and second hydraulic rods 2400 and 2500 are controlled by a control unit 1300.

[0033] like Figure 5As shown, the fixing mechanism 3000 includes a base plate 3100 and an umbrella-shaped frame 3200 . The umbrella-shaped frame 3200 is disposed between the base plate 3100 and the other end of the third robotic arm 2300 to connect the base plate 3100 and the third robotic arm 2300 .

[0034] The base plate 3100 is used to provide an installation platform for the adaptive detection mechanism 4000. The umbrella-shaped frame 3200 is composed of 6 frames, which are evenly arranged at an angle of 60° between each other. They are vertically connected to the adaptive detection mechanism 4000 from the telescopic mechanism 2000, and are used to connect the base plate 3100 and the third robotic arm 2300 while providing installation space for part of the structure of the adaptive detection mechanism 4000.

[0035] A mounting hole is provided in the middle of the base plate 3100 to facilitate the installation of the adaptive detection mechanism 4000. A movable sleeve 3300 is provided around the mounting hole at the connection end with the umbrella-shaped frame 3200 to support the adaptive detection mechanism 4000 to move radially within a certain range and to generate restrictions to prevent excessive movement.

[0036] like Figures 6 to 9 As shown, the antenna rod 4100 is arranged at the edge of the flat plate 4200 , and a contact pressure feedback sensor is provided at the end thereof, and the contact pressure feedback sensor is connected to the control unit 1300 .

[0037] The flat plate 4200 serves as the basic structure of the adaptive detection mechanism 4000. It is in the form of a circular plate and contains a through hole in the center for the rebound mechanism 4300 to work. All other structures are attached to the flat plate 4200. The antenna rods 4100 are the first contact objects when the telescopic mechanism 2000 drives the adaptive detection mechanism 4000 to approach the concrete structure surface to be detected. There are 3 antenna rods in total, which are evenly arranged on the edge of the flat plate 4200 with an angle of 120° between each other.

[0038] A protective cover 4400 is provided at the corresponding position between the flat plate 4200 and the rebound mechanism 4300 for mounting the rebound mechanism 4300 .

[0039] The rebound mechanism 4300 includes a rebound hammer body 4310 and a telescopic motor 4320. The rebound hammer body 4310 is installed in the protective cover 4400 with its detection end facing the through hole. The telescopic motor 4320 is arranged between the fixed end of the rebound hammer body 4310 and the protective cover 4400.

[0040] The rebound tester body 4310 and the telescopic motor 4320 are connected to the control unit 1300 via a data line, which has achieved the functions of power supply and data transmission. The telescopic motor 4320 drives the rebound tester body 4310 to move closer to or away from the area to be detected.

[0041] One end of the hinge rod 4500 is disposed in the movable sleeve 3300 , and the other end thereof is provided with a universal ball bearing platform 4600 . The universal ball bearing platform 4600 is connected to the plane plate 4200 directly or through a cross slide 4700 .

[0042] Three hinge rods 4500 are evenly spaced, each connected to the movable sleeve 3300 of the third robotic arm 2300. One hinge rod 4500 is directly connected to the planar plate 4200 via a universal ball bearing platform 4600, while the remaining hinge rods 4500 are connected to the planar plate 4200 via the universal ball bearing platform 4600 and a cross slide 4700. When the angle between the planar plate 4200 and the concrete structure to be inspected varies, the extended lengths of the remaining hinge rods 4500 change, and their planar positions on the planar plate 4200 can be freely adjusted via the cross slide 4700. After one of the antenna rods 4100 contacts the area to be inspected, the remaining hinge rods 4500 are adjusted to contact the area to be inspected, thereby positioning the rebound mechanism 4300 perpendicular to the area to be inspected.

[0043] The cross slide 4700 includes a horizontal slide and a vertical slide. The horizontal slide is fixedly welded to the plane plate 4200, and the vertical slide is arranged perpendicular to the horizontal slide. It can slide horizontally on the horizontal slide. The bottom of the universal ball bearing head 4600 can slide vertically on the vertical slide to support the movement of the hinge rod 4500.

[0044] The horizontal slide and the vertical slide can also be provided with a limit device to prevent derailment.

[0045] In the process of approaching the concrete structure surface to be inspected, after one of the antenna rods 4100 detects the area to be inspected, the hinge rod 4500 changes the extension length through the cross slide 4700, so that the remaining antenna rods 4100 are in contact with the concrete structure surface of the area to be inspected in turn, so that the flat plate 4200 is parallel to the concrete structure surface, that is, the rebound mechanism 4300 is perpendicular to the concrete structure surface. When the pressures of the three antenna rods 4100 are similar and within the set value range, it means that the adaptive detection mechanism 4000 has been in contact with the concrete structure surface to be inspected, and the detection operation can be carried out. Figure 10 shown.

[0046] This embodiment also provides a workflow of the above-mentioned extension penetration type attached concrete strength test hammer, including the following steps: Step 1: Initialization positioning. After the device reaches the designated position, the telescopic mechanism 2000 unfolds from the safe standby position and extends in the direction preset by the program. Step 2: Probing and positioning: The telescopic mechanism 2000 pushes the end of the adaptive detection mechanism 4000 to the preset detection position. The antenna rod 4100 touches the concrete structure surface and adaptively adjusts the flat plate 4200 to a state perpendicular to the concrete structure surface to be tested. The contact pressure feedback sensor of the antenna rod 4100 provides feedback to ensure that the flat plate 4200 and the surface to be tested are in contact. Step 3: Trigger detection. The control unit 1300 sends a pulse signal to drive the telescopic motor 4320 to perform impact detection on the rebound hammer and simultaneously collect rebound data. Step 4: Data transmission: the original rebound data is pre-processed by the edge computing gateway of the control unit 1300 and uploaded to the cloud server to generate a report; Step 5: Reset and wait, the telescopic mechanism 2000 retracts to the storage position and waits for the next detection instruction.

[0047] This invention, through the deep integration of mechanical design, control algorithms, and data links, completely reconstructs the traditional rebound detection operation mode, providing a standardized tool for concrete quality control in intelligent construction scenarios. It builds multi-directional coverage capabilities, with three robotic arms working collaboratively to cover high altitudes and narrow spaces that are inaccessible to traditional manual labor. The hydraulic rod and antenna rod 4100 technology ensures millimeter-level precision, surpassing the precision limits of manual operation. Zero human intervention automates the entire process from positioning and probing to data analysis, reducing the risk of high-altitude operations by over 80%. Intelligent diagnosis is extended, with a cloud platform supporting the linkage of detection data with BIM models, enabling early warning of structural defects.

[0048] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A stretch-contact type attached concrete strength rebound test hammer, characterized in that: include: an attachment mechanism, one end of which is used to connect to the moving mechanism; a telescopic mechanism, one end of which is connected to the other end of the attachment mechanism, and the other end of which is provided with a fixing mechanism, the telescopic mechanism being used to bring the fixing mechanism close to the area to be detected; and An adaptive detection mechanism is movably connected to the fixing mechanism. The adaptive detection mechanism includes a plane plate and a rebound mechanism. A through hole is opened at the geometric center of the plane plate, one end of which is provided with a tentacles rod around the through hole, and the other end of the plane plate is provided with a rebound mechanism at a position corresponding to the through hole. A hinge rod is provided around the rebound mechanism, and the hinge rod is movably connected to the fixing mechanism.

2. The extension penetration type attached concrete strength rebound test hammer according to claim 1, characterized in that: The attachment mechanism comprises: A base plate, with fixing devices provided at both ends of the base plate; a driving mechanism, disposed at one end of the base plate; and The control unit is arranged on one side of the driving mechanism and is used to control the driving mechanism.

3. The extension penetration type attached concrete strength rebound test hammer according to claim 2, characterized in that: The driving mechanism comprises: Fixed base; and A driving motor is provided on the fixed base, and an output end of the driving motor extends into the fixed base.

4. The extension penetration type attached concrete strength rebound test hammer according to claim 1, characterized in that: The telescopic mechanism comprises: a first robotic arm, one end of which is rotatably connected to the fixed base, and a driving motor drives the first robotic arm to rotate; a second robotic arm, one end of which is rotatably connected to the other end of the first robotic arm and is connected to the first robotic arm via a first hydraulic rod; and One end of the third robotic arm is rotatably connected to the other end of the second robotic arm, and is connected to the second robotic arm through a second hydraulic rod.

5. The extension penetration type attached concrete strength rebound test hammer according to claim 1, characterized in that: The fixing mechanism comprises: base plate; and The umbrella-shaped frame is disposed between the base plate and the other end of the third mechanical arm, and is used to connect the base plate and the third mechanical arm.

6. The extension penetration type attached concrete strength rebound test hammer according to claim 5, characterized in that: A mounting hole is provided in the middle of the base plate, and a movable sleeve is provided around the mounting hole at the connecting end thereof with the umbrella-shaped frame.

7. The extension penetration type attached concrete strength rebound test hammer according to claim 1, characterized in that: The antenna rod is arranged at the edge of the plane plate, and a contact pressure feedback sensor is arranged at the end of the antenna rod. The contact pressure feedback sensor is connected to the control unit.

8. The extension penetration type attached concrete strength test hammer according to claim 7, characterized in that: A protective cover is provided at the corresponding positions of the plane plate and the rebound mechanism.

9. The extension penetration type attached concrete strength test hammer according to claim 8, characterized in that: The rebound mechanism comprises: a rebound hammer body, with its testing end facing the through hole; and a telescopic motor, disposed between the fixed end of the rebound hammer body and the protective cover; The rebound tester body and the telescopic motor are connected to the control unit via a data line.

10. The extension penetration type attached concrete strength rebound test hammer according to claim 1, characterized in that: One end of the hinge rod is arranged in a movable sleeve, and the other end thereof is provided with a universal ball platform, and the universal ball platform is connected to the plane plate directly or through a cross slide.

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