A device for detecting the quality of concrete by means of impact echo

Abstract

The application relates to the technical field of concrete detection equipment, and particularly discloses an impact echo detection device for concrete quality, wherein an upper supporting pipe is connected to the upper end of a lower supporting pipe; a horizontal supporting rod is connected to the top of the upper supporting pipe; a knocking structure is rotatably arranged at the left end of the horizontal supporting rod through a first turning structure and used for knocking the concrete; and a echo receiver is arranged at the right end of the horizontal supporting rod through a second turning structure and used for receiving the impact echo generated by the knocking of the concrete. The knocking mechanism is arranged to replace manual construction, thereby improving the operation efficiency; the positions of the upper supporting pipe and the lower supporting pipe are adjusted to further adjust the height of the device, so that the device can adapt to the detection operation of the high concrete; when the detection is performed on the different operation surfaces of the bottom and the side wall of the concrete beam, the angles of the knocking structure and the echo receiver are adjusted through the turning structures, so that the knocking structure and the echo receiver can be close to the bottom or the side wall of the concrete beam for detection, and the detection range is expanded.

Description

Technical Field

[0001] This invention relates to the field of concrete testing equipment technology, specifically to an impact echo testing device for concrete quality. Background Technology

[0002] Concrete is a building material made from a mixture of cementitious materials, aggregates, water, and some additives. It possesses advantages such as high compressive strength, long service life, and strong plasticity, and is commonly used in buildings, bridges, roads, water conservancy projects, and other facilities, making it an important component of modern engineering. After construction, concrete requires quality testing. Existing testing methods include rebound hammer testing, core sampling testing, and echo testing. Rebound hammer testing can only detect the surface strength of concrete and cannot detect internal cracks. Core sampling testing can damage the concrete. Echo testing, however, is widely used in key projects due to its high efficiency, wide detection range, high accuracy, and non-destructive testing capabilities.

[0003] Echo testing determines the internal quality of concrete by striking it and receiving and analyzing the echoes emitted. Current echo testing methods rely on manual hand-held striking, which limits the testing location and height. For concrete slabs and beams at higher elevations, operation requires climbing, which is both inefficient and potentially dangerous. Summary of the Invention

[0004] The purpose of this invention is to provide an impact echo detection device for concrete quality, thereby solving the problem of low detection efficiency in existing echo detection devices.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] An impact echo detection device for concrete quality includes an upper branch pipe, a lower branch pipe, a horizontal support rod, a striking mechanism, and an echo receiver.

[0007] The lower branch pipe is installed vertically.

[0008] The upper branch pipe is installed vertically and connects to the upper end of the lower branch pipe;

[0009] A horizontal support rod connects to the top of the upper support pipe;

[0010] The striking mechanism, rotatably mounted on the left end of the horizontal support rod via the first steering structure, is used to strike concrete.

[0011] An echo receiver, rotatably mounted on the right end of a horizontal support rod via a second steering structure, is used to receive impact echoes generated by striking concrete.

[0012] As a further technical solution of the above scheme, the upper branch pipe and the lower branch pipe are connected by a folding rod; the upper and lower ends of the folding rod are provided with grooves on their sides; the lower end of the upper branch pipe and the upper end of the lower branch pipe are both provided with threaded sleeves, the threaded sleeves are connected to the grooves through an arc-shaped clamp, the outer side of the arc-shaped clamp is provided with threads to cooperate with the threaded sleeves, and the inner side is provided with protrusions corresponding to the grooves.

[0013] As a further technical solution of the above scheme, the horizontal support rod includes a left support rod and a right support rod; the left support rod is rotatably connected to the left end of the upper support pipe, and the right support rod is rotatably connected to the right end of the upper support pipe; the folding rod includes an upper folding rod and a lower folding rod, the upper folding rod is inserted into the upper support pipe for connection, and the lower folding rod is inserted into the lower support pipe for connection; the upper folding rod and the lower folding rod are connected by a steering fixing member.

[0014] As a further technical solution of the above scheme, the steering fixing component includes a steering rod and a limiting rod; the steering rod is horizontally arranged, one end of which is inserted into the lower branch pipe from the top side wall of the lower branch pipe, and the end is connected to a steering shaft, which is fixedly connected to the bottom end of the upper branch pipe, and the other end extends to the outside of the lower branch pipe and is provided with a rotating pull ring; the lower end of the upper branch pipe is provided with an insertion hole, and the limiting rod is arranged parallel to the steering rod, one end of which is inserted into the lower branch pipe from the top side wall of the lower branch pipe and aligned with the insertion hole, and the other end extends to the outside of the lower branch pipe and is provided with a handle; a first spring is sleeved on the limiting rod, one end of which is fixedly connected to the middle of the limiting rod, and the other end is connected to the inner side wall of the lower branch pipe into which the limiting rod is inserted.

[0015] As a further technical solution of the above scheme, the upper branch pipe is hollow; the end of the steering shaft near the upper branch pipe is provided with a first bevel gear; a vertical linkage shaft is provided inside the upper branch pipe, and a second bevel gear is provided at the lower end of the vertical linkage shaft, which meshes with the first bevel gear; a third bevel gear is provided at the upper end of the vertical linkage shaft; the right end of the left support rod is inserted into the upper branch pipe through a rotating shaft, and a fourth bevel gear is provided at the end that meshes with the third bevel gear; the left end of the right support rod is inserted into the upper branch pipe through a rotating shaft, and a fifth bevel gear is provided at the end that meshes with the third bevel gear.

[0016] As a further technical solution of the above scheme, the striking mechanism includes a protective shell, a support frame, a drive assembly, and an impact release component; the protective shell is set at the left end of the horizontal support rod through a first steering structure, and two support frames are provided, symmetrically arranged on both sides of the protective shell, for pressing against the concrete support; the lower part of the impact release component is set inside the protective shell, and the upper part protrudes from the protective shell for striking the concrete; the drive assembly is set inside the protective shell and connected to the lower end of the impact release component, for driving the impact release component to intermittently strike the concrete.

[0017] As a further technical solution of the above solution, the impact release component includes a support plate, a connecting rod, a moving rod, a striking steel ball, and a second spring; both ends of the support plate are fixedly connected to the inner sidewall of the protective shell; the moving rod is vertically arranged through the support plate, with its upper end connected to the striking steel ball and its lower end hinged to the upper end of the connecting rod, the lower end of which is connected to the drive assembly; a second spring is sleeved on the moving rod, with one end of the second spring fixedly connected to the middle of the moving rod and the other end fixedly connected to the upper end of the support plate;

[0018] The drive assembly includes a motor, an output shaft, a turntable, a rotating rod, and a stop bar; the turntable is eccentrically hinged to the lower part of the connecting rod; a stop bar is provided at the bottom of the connecting rod; the motor is located on the inner wall of the protective shell, the output shaft of the motor passes through the turntable, and a rotating rod is provided along the radial direction of the turntable; after the rotating rod rotates and touches the stop bar, it drives the stop bar and the connecting rod to rotate, the moving rod and the striking steel ball move down to compress the second spring to store energy, and when the rotating rod rotates away from the stop bar, the second spring releases energy to drive the striking steel ball to rise and touch the concrete to strike it.

[0019] As a further technical solution to the above scheme, the support frame and the echo receiver are at the same horizontal height.

[0020] As a further technical solution to the above scheme, the first steering structure and the second steering structure have the same structure; the first steering structure includes a shell, a third spring, a push plate and a support rod; the shell is hollow to form a mounting cavity, and the left end of the support rod is inserted into the end of the shell and connected to the push plate; the left end of the third spring is connected to the left inner wall of the shell, and the right end is connected to the left side of the push plate, and a positioning rod is provided on the right side of the push plate; the right inner wall of the shell is provided with a first positioning hole and a second positioning hole, the first positioning hole is located above the second positioning hole and is connected by a quadrant arc-shaped sliding groove, and the positioning rod moves along the sliding groove to insert into the first positioning hole or the second positioning hole for positioning; the left end of the shell is connected to a striking mechanism or an echo receiver, and the right end of the support rod is connected to the left or right end of a horizontal support rod.

[0021] As a further technical solution to the above scheme, a detection recorder is also included, which is installed on the side wall of the lower branch pipe and electrically connected to the impact mechanism and the echo receiver for recording impact echo data.

[0022] Compared with the prior art, the present invention has the following advantages and beneficial effects: the present invention improves work efficiency by setting up a hammering mechanism to replace manual construction.

[0023] When inspecting concrete at heights, the position of the upper and lower support pipes is adjusted to adjust the height of the device, making it suitable for concrete inspection operations at heights. When inspecting different working surfaces such as the bottom and side walls of concrete beams, the angle of the striking mechanism and echo receiver is adjusted by the steering structure, so that it can be closer to the bottom or side wall of the concrete beam for inspection, thus expanding the inspection range. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the folded structure of this device.

[0025] Figure 2 This is a schematic diagram of the structure of the device during operation.

[0026] Figure 3 This is a schematic diagram of the longitudinal cross-sectional structure of the upper and lower branch pipes.

[0027] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0028] Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point B.

[0029] Figure 6 for Figure 3 Enlarged schematic diagram of the structure at point C.

[0030] Figure 7 This is a schematic diagram of the striking mechanism.

[0031] Figure 8 This is a structural diagram of the drive assembly and the impact relief component.

[0032] Figure 9 This is a schematic diagram of the first steering structure.

[0033] Figure 10 This is a schematic diagram of the outer shell.

[0034] The meanings of the labels in the diagram are as follows:

[0035] Lower branch pipe -1;

[0036] Upper branch pipe -2;

[0037] Detection recorder-3;

[0038] Horizontal support rod -4; Left support rod -401; Right support rod -402;

[0039] Striking mechanism - 5; Protective shell - 501; Support frame - 502; Drive assembly - 503; Motor - 5031; Output shaft - 5032; Rotating rod - 5033; Turntable - 5034; Stop lever - 5035; Impact release component - 504; Support plate - 5041; Connecting rod - 5042; Second spring - 5043; Moving rod - 5044; Striking steel ball - 5045;

[0040] Echo Receiver-6;

[0041] Steering fixing component - 7; Steering rod - 701; Limiting rod - 702; Steering shaft - 703; Rotating pull ring - 704; Insertion hole - 705; Handle - 706; First spring - 707; First bevel gear - 708; Vertical linkage shaft - 709; Second bevel gear - 710; Third bevel gear - 711; Fourth bevel gear - 712; Fifth bevel gear - 713;

[0042] First steering structure - 8; outer shell - 801; mounting cavity - 802; third spring - 803; push plate - 804; support rod - 805; positioning rod - 806; first positioning hole - 807; second positioning hole - 808; slide groove - 809;

[0043] Groove-901; Threaded sleeve-902; Arc-shaped clamp-903; Upper folding rod-904; Lower folding rod-905. Detailed Implementation

[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, so as to provide a better understanding of the concept of the present invention, the technical problem solved, the technical features constituting the technical solution, and the technical effects brought about.

[0045] like Figures 1-10 As shown, an impact echo detection device for concrete quality includes an upper branch pipe 2, a lower branch pipe 1, a horizontal support rod 4, a detection recorder 3, a striking mechanism 5, and an echo receiver 6.

[0046] Lower branch pipe 1, installed vertically;

[0047] Upper branch pipe 2 is vertically installed and connected to the upper end of lower branch pipe 1;

[0048] Horizontal support rod 4 is connected to the top of upper support pipe 2;

[0049] The striking mechanism 5 is rotatably mounted on the left end of the horizontal support rod 4 via the first steering structure 8, and is used to strike concrete.

[0050] The echo receiver 6 is rotatably mounted on the right end of the horizontal support rod 4 via the second steering structure, and is used to receive the impact echo generated by striking the concrete.

[0051] When using this device, first connect the upper branch pipe 2 and the lower branch pipe 1 together and adjust them according to the concrete detection position. When the striking mechanism 5 and the echo receiver 6 reach the designated working position, the striking mechanism 5 is used to strike the concrete, and the echo receiver 6 receives the echo of the strike and transmits it back to the detection record 3 for recording. During the detection process, different surfaces of the concrete will be detected. At this time, the direction and position of the striking mechanism 5 and the echo receiver 6 are adjusted by rotating the first steering structure 8 and the second steering structure to detect the concrete on different surfaces. Using the striking mechanism 5 to replace manual striking improves the work efficiency.

[0052] like Figure 3 and Figure 5 As shown, in a preferred embodiment, the upper branch pipe 2 and the lower branch pipe 1 are connected by a folding rod; the upper and lower ends of the folding rod are provided with grooves 901 on their sides; the lower end of the upper branch pipe 2 and the upper end of the lower branch pipe 1 are both provided with threaded sleeves 902, the threaded sleeves 902 are connected to the grooves 901 through an arc-shaped clamping plate 903, the outer side of the arc-shaped clamping plate 903 is provided with threads to cooperate with the threaded sleeves 902, and the inner side is provided with protrusions corresponding to the grooves 901.

[0053] In this embodiment, the adjustment of the extension and retraction of the upper branch pipe 2 and the lower branch pipe 1 is mainly achieved by adjusting the length of the bending rod. A threaded connection is used, which provides both length adjustment and a locking effect. The diameter of the threaded sleeve 902 gradually decreases from the inside to the outside. After tightening, it applies an inward pushing force to the arc-shaped clamp 903, ensuring a tight fit between the arc-shaped clamp 903 and the outer surfaces of the upper branch pipe 2 and the lower branch pipe 1, achieving locking through friction. Grooves 901 are formed on the outer surfaces of the upper branch pipe 2 and the lower branch pipe 1, and corresponding protrusions are provided on the inner surface of the arc-shaped clamp 903. When the arc-shaped clamp 903 is fitted with the upper branch pipe 2 and the lower branch pipe 1, it will engage with the grooves 901, significantly improving the friction and fixing effect between the arc-shaped clamp 903 and the upper branch pipe 2 and the lower branch pipe 1, resulting in higher load-bearing capacity and a longer service life. Adjusting the length of the bending rod for concrete inspection at higher locations increases the device's usability.

[0054] like Figures 1-3 As shown, in a preferred embodiment, the horizontal support rod 4 includes a left support rod 401 and a right support rod 402; the left support rod 401 is rotatably connected to the left end of the upper support pipe 2, and the right support rod 402 is rotatably connected to the right end of the upper support pipe 2; the folding rod includes an upper folding rod 904 and a lower folding rod 905, the upper folding rod 904 is inserted into the upper support pipe 2 for connection, and the lower folding rod 905 is inserted into the lower support pipe 1 for connection; the upper folding rod 904 and the lower folding rod 905 are connected by a steering fixing member 7.

[0055] In this embodiment, the horizontal support rod 4 is configured as a two-section structure consisting of a left support rod 401 and a right support rod 402, which can be rotated and folded together to overlap with the folding rod when not in use (e.g., Figure 1 The opening area is reduced, making it easier to store; at the same time, the folding rods are also set as upper folding rod 904 and lower folding rod 905, which can be rotated and overlapped by the steering fixing part 7 for easy storage when not in use.

[0056] like Figure 4 and Figure 6 As shown, in a preferred embodiment, the steering fixing component 7 includes a steering rod 701 and a limiting rod 702. The steering rod 701 is horizontally arranged, with one end inserted into the lower branch pipe 1 from the top side wall of the lower branch pipe 1, and the end connected to a steering shaft 703. The steering shaft 703 is fixedly connected to the bottom end of the upper branch pipe 2, and the other end extends to the outside of the lower branch pipe 1, and is provided with a rotating pull ring 704. The lower end of the upper branch pipe 2 is provided with multiple insertion holes 705. The limiting rod 702 is arranged parallel to the steering rod 701, with one end inserted into the lower branch pipe 1 from the top side wall of the lower branch pipe 1 and aligned with the insertion hole 705. The other end extends to the outside of the lower branch pipe 1 and is provided with a handle 706. A first spring 707 is sleeved on the limiting rod 702. One end of the first spring 707 is fixedly connected to the middle part of the limiting rod 702, and the other end is connected to the inner side wall of the lower branch pipe 1 where the limiting rod 702 is inserted.

[0057] In this embodiment, when a turn is required, the handle 706 is pulled first, causing the limiting rod 702 to disengage from the limit of the insertion hole 705, and the entire device is in a rotatable state; the steering rod 701 is rotated, and the steering rod 701 drives the steering shaft 703 to rotate. Since the steering shaft 703 is fixedly connected to the upper branch pipe 2, it drives the upper branch pipe 2 to rotate. When the upper branch pipe 2 rotates to overlap with the lower branch pipe 1 in the same direction, the handle 706 is released, and the first spring 707 on the limiting rod 702 releases energy to drive the limiting rod 702 to reset. The limiting rod 702 is then inserted into another insertion hole 705 to complete the limiting and fixing.

[0058] like Figure 4 and Figure 6 As shown, in a preferred embodiment, the upper branch pipe 2 is hollow; the steering shaft 703 is provided with a first bevel gear 708 near the end of the upper branch pipe 2; a vertical linkage shaft 709 is provided inside the upper branch pipe 2, and a second bevel gear 710 is provided at the lower end of the vertical linkage shaft 709, which meshes with the first bevel gear 708; a third bevel gear 711 is provided at the upper end of the vertical linkage shaft 709; the right end of the left support rod 401 is inserted into the upper branch pipe 2 through a rotating shaft, and a fourth bevel gear 712 is provided at the end of the left support rod 402, which meshes with the third bevel gear 711; the left end of the right support rod 402 is inserted into the upper branch pipe 2 through a rotating shaft, and a fifth bevel gear 713 is provided at the end of the right support rod 402, which meshes with the third bevel gear 711.

[0059] In this embodiment, when the rotating shaft 703 rotates, it drives the first bevel gear 708 to rotate. Since the first bevel gear 708 meshes with the second bevel gear 710, the rotation of the second bevel gear 710 causes the vertical linkage shaft 709 to rotate. The third bevel gear 711 at the top of the vertical linkage shaft 709 rotates. Since the fourth bevel gear 712 and the fifth bevel gear 713 mesh on both sides of the third bevel gear 711 respectively, the fourth bevel gear 712 and the fifth bevel gear 713 rotate synchronously but in opposite directions, thereby achieving the effect of synchronous unfolding and folding of the left support rod 401 and the right support rod 402, improving the efficiency of use and storage. It should be further explained that the transmission ratio of the fourth bevel gear 712 and the fifth bevel gear 713 is 2:1. That is, when the third bevel gear 711 rotates 180 degrees, the shaft driven by the bevel gear only rotates 90 degrees, so that the folding motion of the left support rod 401 and the right support rod 402 is consistent with the folding motion of the upper folding rod 904 and the lower folding rod 905.

[0060] like Figure 7 As shown in the preferred embodiment, the striking mechanism 5 includes a protective shell 501, a support frame 502, a drive assembly 503, and an impact release component 504. The protective shell 501 is disposed at the left end of the horizontal support rod 4 via a first steering structure 8. Two support frames 502 are provided, symmetrically disposed on both sides of the protective shell 501, for supporting the concrete. The lower part of the impact release component 504 is disposed inside the protective shell 501, and the upper part protrudes from the protective shell 501 for striking the concrete. The drive assembly 503 is disposed inside the protective shell 501 and connected to the lower end of the impact release component 504 for driving the impact release component 504 to intermittently strike the concrete.

[0061] In this embodiment, the driving component 503 intermittently drives the impact release component 504 to compress its potential energy. When the impact release component 504 has finished compressing its potential energy, it releases the impact force, knocks on the concrete to generate a shock wave, and achieves the effect of automatic knocking. This is convenient for use at high places. Furthermore, the impact release component 504 will disconnect from the intermittent driving component 503 during impact, so that the impact reaction force generated by it will not interfere with the intermittent driving component 503 and avoid affecting the service life of the intermittent driving component 503.

[0062] like Figure 7 and Figure 8As shown, in a preferred embodiment, the impact release component 504 includes a support plate 5041, a connecting rod 5042, a moving rod 5044, a striking steel ball 5045, and a second spring 5043; both ends of the support plate 5041 are fixedly connected to the inner sidewall of the protective shell 501; the moving rod 5044 is vertically arranged through the support plate 5041, with its upper end connected to the striking steel ball 5045 and its lower end hinged to the upper end of the connecting rod 5042, the lower end of which is connected to the drive assembly 503; the second spring 5043 is sleeved on the moving rod 5044, with one end of the second spring 5043 fixedly connected to the middle of the moving rod 5044 and the other end fixedly connected to the upper end of the support plate 5041;

[0063] The drive assembly 503 includes a motor 5031, an output shaft 5032, a turntable 5034, a rotating rod 5033, and a stop bar 5035. The turntable 5034 is eccentrically hinged to the lower part of the connecting rod 5042. The stop bar 5035 is provided at the bottom of the connecting rod 5042. The motor 5031 is located on the inner wall of the protective shell 501. The output shaft of the motor 5031 passes through the turntable 5034, and the rotating rod 5033 is provided radially along the turntable 5034. After the rotating rod 5033 rotates and touches the stop bar 5035, it drives the stop bar 5035 and the connecting rod 5042 to rotate. The moving rod 5044 and the striking steel ball 5045 move down to compress the second spring 5043 to store energy. When the rotating rod 5033 rotates away from the stop bar 5035, the second spring 5043 releases energy to drive the striking steel ball 5045 to rise and touch the concrete to strike it.

[0064] In this embodiment, the disc 5034 is sleeved on the outside of the output shaft 5032 but is not directly connected to the output shaft. This ensures that the disc 5034 does not rotate when the output shaft 5032 rotates. Only when the rotating rod 5033 on the side of the output shaft 5032 is in contact with the stop rod 5035 will the disc 5034 be pushed and rotate, causing the impact release component 504 to compress its potential energy. After the disc 5034 rotates 180 degrees, the pulling force of the impact release component 504 on the disc 5034 will be transferred to the other side of the disc 5034. At this time, the stop rod 5035 on the side of the disc 5034 is on the same side, so that the disc 5034 and the stop rod 5035 are no longer restricted by the rotating rod 5033. The impact release component 504 is driven to reset, achieving the effect of intermittently driving the impact release component 504. Furthermore, when the impact release component 504 releases the impact force, it is not connected to the transmission, thus avoiding the influence of the counter-impact force. When the impact is released, the support plate 5041 supports the moving rod 5044 and restricts its movement to a straight line. At the same time, when the disc 5034 rotates, it pulls the moving rod 5044 downward through the connecting rod 5042. The moving rod 5044 then compresses the second spring 5043 downward, so that the second spring 5043 is in a state of potential energy compression. When the stop bar 5035 on the disc 5034 separates from the rotating rod 5033, the compressed second spring 5043 releases its elastic force, driving the moving rod 5044 to move upward, and at the same time driving the steel ball 5045 to strike the concrete, thus achieving the effect of automatically striking the concrete.

[0065] like Figure 2 and Figure 3 As shown, in a preferred embodiment, the support frame 502 is at the same horizontal height as the echo receiver 6. In this embodiment, the support frame 502, as a support, is flush with the echo receiver 6 at the same horizontal height to improve the echo reception effect.

[0066] like Figure 9 and Figure 10As shown, in a preferred embodiment, the first steering structure 8 and the second steering structure have the same structure; the first steering structure 8 includes a housing 801, a third spring 803, a push plate 804, and a support rod 805; the housing 801 is hollow to form a mounting cavity 802, and the left end of the support rod 805 is inserted into the end of the housing 801 and connected to the push plate 804; the left end of the third spring 803 is connected to the left inner wall of the housing 801, and the right end is connected to the left side of the push plate 804, and the right side of the push plate 804 is provided with a positioning rod 806; the right inner wall of the housing 801 is provided with a first positioning hole 807 and a second positioning hole 808, the first positioning hole 807 is located above the side of the second positioning hole 808, and is connected by a quadrant arc-shaped sliding groove 809, and the positioning rod 806 moves along the sliding groove 809 to be inserted into the first positioning hole 807 or the second positioning hole 808 for positioning; the left end of the housing 801 is connected to the striking mechanism 5 or the echo receiver 6, and the right end of the support rod 805 is connected to the left or right end of the horizontal support rod 4.

[0067] In this embodiment, the positioning rod 806 is inserted into the first positioning hole 807 or the second positioning hole 808 to achieve a fixing effect. Then, the rotation of the push plate 804 and the support rod 805 is used to achieve a steering effect. When it is necessary to inspect the bottom of the concrete slab, the push plate 804 is inserted into the first positioning hole 807 using the positioning rod 806, so that the support rod 805 drives the striking mechanism 5 and the echo receiver 6 to remain perpendicular. When it is necessary to inspect the side of the concrete beam, the support rod 805 and the push plate 804 are pressed inward, so that the positioning rod 806 on the push plate 804 is separated from the first positioning hole 807. Then, the support rod 805 and the push plate 808 are rotated. The angle is 4 to 90 degrees, allowing the positioning rod 806 on the push plate 804 to engage with the second positioning hole 808, ensuring the striking mechanism 5 is horizontal when rotating, facilitating its fit against the side of the concrete beam. A second spring 802 is provided in the mounting cavity 802 to apply a pushing force to the push plate 804. The second spring 802 ensures a secure engagement between the positioning rod 806 and the positioning hole 807, preventing wobbling. The sliding groove 808 follows the same rotation path as the positioning rod 806, limiting its movement to between the positioning holes 807, reducing the workload of positioning the positioning rod 806 and the positioning holes 807. The second steering structure is the same as the first steering structure 8, driving the echo receiver 6 to rotate in the same direction as the striking mechanism 5.

[0068] like Figure 1 and Figure 2As shown, in a preferred embodiment, a detection recorder 3 is also included, disposed on the side wall of the lower branch pipe 1, and electrically connected to the impact mechanism 5 and the echo receiver 6, for recording impact echo data. In this embodiment, to facilitate the recording of echo detection data, the detection recorder 3 is directly disposed on the lower branch pipe 1, ensuring data accuracy at close range.

[0069] The terms "connection" and "fixing" appearing in the description of this invention can refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meaning of the above terms in this invention should be understood according to the specific circumstances.

[0070] In the description of this invention, the terms "center," "upper," "lower," "horizontal," "inner," and "outer," etc., are used only to indicate the orientation or positional relationship for the convenience of describing this invention and to simplify the description, and do not indicate or imply a specific orientation that the device or element referred to must have, and therefore should not be construed as a limitation of this invention.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An impact echo detection device for concrete quality, characterized in that: It includes an upper branch pipe (2), a lower branch pipe (1), a horizontal support rod (4), a striking mechanism (5), and an echo receiver (6). The lower branch pipe (1) is installed vertically; The upper branch pipe (2) is set vertically and connected to the upper end of the lower branch pipe (1); A horizontal support rod (4) is connected to the top of the upper support pipe (2); The striking mechanism (5) is rotatably mounted on the left end of the horizontal support rod (4) via the first steering structure (8) for striking concrete; The echo receiver (6) is rotatably mounted on the right end of the horizontal support rod (4) via the second steering structure, and is used to receive the impact echo generated by striking the concrete. The upper branch pipe (2) and the lower branch pipe (1) are connected by a folding rod; the upper and lower ends of the folding rod are provided with grooves (901); the lower end of the upper branch pipe (2) and the upper end of the lower branch pipe (1) are both provided with threaded sleeves (902), the threaded sleeves (902) are connected to the grooves (901) through an arc-shaped clamp (903), the outer side of the arc-shaped clamp (903) is provided with threads, the threads are engaged with the threaded sleeves (902), and the inner side of the arc-shaped clamp (903) is provided with protrusions corresponding to the grooves (901); The horizontal support rod (4) includes a left support rod (401) and a right support rod (402); the left support rod (401) is rotatably connected to the left end of the upper support pipe (2), and the right support rod (402) is rotatably connected to the right end of the upper support pipe (2); the folding rod includes an upper folding rod (904) and a lower folding rod (905), the upper folding rod (904) is inserted into the upper support pipe (2) for connection, and the lower folding rod (905) is inserted into the lower support pipe (1) for connection; the upper folding rod (904) and the lower folding rod (905) are connected by a steering fixing member (7); The steering fixing component (7) includes a steering rod (701) and a limiting rod (702); the steering rod (701) is horizontally arranged, with one end inserted into the lower branch pipe (1) from the top side wall of the lower branch pipe (1), and the end connected to a steering shaft (703), which is fixedly connected to the bottom end of the upper branch pipe (2), and the other end extending to the outside of the lower branch pipe (1), and provided with a rotating pull ring (704); the lower end of the upper branch pipe (2) is provided with multiple insertion holes (705), and the limiting rod (702) 702) is set parallel to the steering rod (701), with one end inserted into the lower branch pipe (1) from the top side wall of the lower branch pipe (1) and aligned with the insertion hole (705), and the other end extending to the outside of the lower branch pipe (1) and provided with a handle (706); a first spring (707) is sleeved on the limiting rod (702), with one end of the first spring (707) fixedly connected to the middle of the limiting rod (702) and the other end connected to the inner side wall of the lower branch pipe (1) where the limiting rod (702) is inserted; The first steering structure (8) and the second steering structure have the same structure; the first steering structure (8) includes a housing (801), a third spring (803), a push plate (804), and a support rod (805); the housing (801) is hollow to form a mounting cavity (802), and the left end of the support rod (805) is inserted into the end of the housing (801) and connected to the push plate (804); the left end of the third spring (803) is connected to the left inner wall of the housing (801), and the right end is connected to the left side of the push plate (804), and a positioning rod is provided on the right side of the push plate (804). 806); The right inner wall of the outer shell (801) is provided with a first positioning hole (807) and a second positioning hole (808). The first positioning hole (807) is located above the second positioning hole (808) and is connected by a sliding groove (809) in the shape of a quadrant arc. The positioning rod (806) is inserted into the first positioning hole (807) or the second positioning hole (808) along the sliding groove (809) for positioning. The left end of the outer shell (801) is connected to the striking mechanism (5) or the echo receiver (6), and the right end of the support rod (805) is connected to the left or right end of the horizontal support rod (4).

2. The impact echo detection device for concrete quality as described in claim 1, characterized in that: The upper branch pipe (2) is hollow; the steering shaft (703) is provided with a first bevel gear (708) at the end near the upper branch pipe (2); a vertical linkage shaft (709) is provided inside the upper branch pipe (2), and a second bevel gear (710) is provided at the lower end of the vertical linkage shaft (709), which meshes with the first bevel gear (708); a third bevel gear (711) is provided at the upper end of the vertical linkage shaft (709); the right end of the left support rod (401) is inserted into the upper branch pipe (2) through a rotating shaft, and a fourth bevel gear (712) is provided at the right end, which meshes with the third bevel gear (711); the left end of the right support rod (402) is inserted into the upper branch pipe (2) through a rotating shaft, and a fifth bevel gear (713) is provided at the left end, which meshes with the third bevel gear (711).

3. The impact echo detection device for concrete quality as described in claim 1, characterized in that: The striking mechanism (5) includes a protective shell (501), a support frame (502), a drive assembly (503), and an impact release component (504). The protective shell (501) is set at the left end of the horizontal support rod (4) through the first steering structure (8). There are two support frames (502), which are symmetrically set on the two side walls of the protective shell (501) to press against the concrete. The lower part of the impact release component (504) is set inside the protective shell (501), and the upper part extends out of the protective shell (501) to strike the concrete. The drive assembly (503) is set inside the protective shell (501) and connected to the lower end of the impact release component (504) to drive the impact release component (504) to intermittently strike the concrete.

4. The impact echo detection device for concrete quality as described in claim 3, characterized in that: The impact release component (504) includes a support plate (5041), a connecting rod (5042), a moving rod (5044), a striking steel ball (5045), and a second spring (5043); the two ends of the support plate (5041) are respectively fixedly connected to the inner sidewall of the protective shell (501); the moving rod (5044) passes vertically through the support plate (5041), with its upper end connected to the striking steel ball (5045) and its lower end hinged to the upper end of the connecting rod (5042), the lower end of which is connected to the drive assembly (503); the second spring (5043) is sleeved on the moving rod (5044), one end of which is fixedly connected to the middle of the moving rod (5044), and the other end is fixedly connected to the upper end of the support plate (5041); The drive assembly (503) includes a motor (5031), an output shaft (5032), a turntable (5034), a rotating rod (5033), and a stop lever (5035); the turntable (5034) is eccentrically hinged to the lower part of the connecting rod (5042); the bottom of the connecting rod (5042) is provided with a stop lever (5035); the motor (5031) is disposed on the inner wall of the protective shell (501), and the output shaft of the motor (5031) passes through the turntable (5034) and rotates along the turntable (5033). 4) A rotating rod (5033) is provided in the radial direction; after the rotating rod (5033) rotates and touches the stop bar (5035), it drives the stop bar (5035) and the connecting rod (5042) to rotate. The moving rod (5044) and the striking steel ball (5045) move down to compress the second spring (5043) to store energy. When the rotating rod (5033) rotates away from the stop bar (5035), the second spring (5043) releases energy to drive the striking steel ball (5045) to rise and touch the concrete to strike.

5. The impact echo detection device for concrete quality as described in claim 4, characterized in that: The support frame (502) is at the same horizontal height as the echo receiver (6).

6. The impact echo detection device for concrete quality as described in claim 1, characterized in that: It also includes a detection recorder (3), which is set on the side wall of the lower branch pipe (1) and electrically connected to the impact mechanism (5) and the echo receiver (6) for recording impact echo data.

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