Impact echo detection device for concrete quality

Abstract

The invention relates to the technical field of concrete detection equipment, and particularly discloses an impact echo detection device for concrete quality, and the impact echo detection device is characterized in that an upper branch pipe is connected to the upper end of a lower branch pipe; the horizontal strut is connected to the top of the upper branch pipe; the knocking structure is rotatably arranged at the left end of the horizontal supporting rod through a first steering structure and is used for knocking concrete; the echo receiver is arranged at the right end of the horizontal supporting rod through a second steering structure and used for receiving impact echoes generated by knocking concrete. The knocking mechanism is arranged to replace manual construction, so that the operation efficiency is improved; the height of the device is adjusted by adjusting the positions of the upper branch pipe and the lower branch pipe, so that the device adapts to detection operation of high concrete; when different working faces of the bottom and the side wall of the concrete beam are detected, the angles of the knocking structure and the echo receiver are adjusted through the steering structure, so that the knocking structure and the echo receiver are close to the bottom or the side wall of the concrete beam for detection, and the detection range is expanded.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete detection equipment, and in particular to an impact echo detection device for concrete quality. Background Art

[0002] Concrete is a building material made from a mixture of cementitious materials, aggregates, water, and some additives. It boasts high compressive strength, a long service life, and strong plasticity. It is commonly used in buildings, bridges, roads, water conservancy projects, and other facilities, and is a vital component of modern engineering. Concrete quality testing is required after construction is complete. Existing testing methods include rebound testing, core pulling testing, and echo testing. Rebound testing can only detect the surface strength of concrete and cannot detect cracks within the concrete. Core pulling testing can damage the concrete. Echo testing, however, is widely used in key projects due to its high efficiency, wide detection range, and accuracy, as well as its ability to perform non-destructive testing on concrete.

[0003] Echo testing determines the quality of concrete by tapping on it, then receiving and analyzing the echoes within. Existing echo testing relies on manual tapping, which limits the location and height of testing. For high concrete slabs and beams, the operator must climb high to perform the test. This method is both inefficient and dangerous. Summary of the Invention

[0004] The purpose of the present invention is to provide an impact echo detection device for concrete quality, so as to solve the problem of low detection efficiency of existing echo detection devices.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows: A concrete quality impact echo detection device comprises an upper branch pipe, a lower branch pipe, a horizontal support rod, a knocking mechanism and an echo receiver; Lower branch pipe, vertically arranged; The upper branch pipe is vertically arranged and connected to the upper end of the lower branch pipe; a horizontal support rod connected to the top of the upper branch pipe; a knocking mechanism, rotatably disposed on the left end of the horizontal support rod through the first steering structure, for knocking the concrete; The echo receiver is rotatably arranged at the right end of the horizontal support rod through the second steering structure, and is used for receiving the impact echo generated by striking the concrete.

[0006] 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 sides of the upper and lower ends of the folding rod are provided with grooves; the lower end of the upper branch pipe and the upper end of the lower branch pipe are both provided with threaded sleeves, and the threaded sleeves are connected to the grooves through arc-shaped splints, the outer side of the arc-shaped splint is provided with threads that cooperate with the threaded sleeves, and the inner side is provided with protrusions corresponding to the grooves.

[0007] 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 branch tube, and the right support rod is rotatably connected to the right end of the upper branch tube; the folding rod includes an upper folding rod and a lower folding rod, the upper folding rod is inserted into the upper branch tube for connection, and the lower folding rod is inserted into the lower branch tube for connection; the upper folding rod and the lower folding rod are connected by a steering fixing member.

[0008] As a further technical solution of the above scheme, the steering fixing member includes a steering rod and a limit rod; the steering rod is horizontally arranged, one end of which is inserted into the lower branch tube from the top side wall of the lower branch tube, and the end is connected to a steering shaft, the steering shaft is fixedly connected to the bottom end of the upper branch tube, and the other end extends to the outside of the lower branch tube and is provided with a rotating pull ring; the lower end of the upper branch tube is provided with a socket, the limit rod is arranged parallel to the steering rod, one end of which is inserted into the lower branch tube from the top side wall of the lower branch tube, aligned with the socket, and the other end extends to the outside of the lower branch tube and is provided with a handle; a first spring is sleeved on the limit rod, one end of the first spring is fixedly connected to the middle part of the limit rod, and the other end is connected to the inner side wall of the lower branch tube inserted into the limit rod.

[0009] As a further technical solution of the above scheme, the upper branch tube is hollow; the steering shaft is provided with a first bevel gear at the end near the upper branch tube; a vertical linkage shaft is provided in the upper branch tube, and a second bevel gear is provided at the lower end of the vertical linkage shaft, which is engaged 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 tube through the rotating shaft, and a fourth bevel gear is provided at the end which is engaged with the third bevel gear; the left end of the right support rod is inserted into the upper branch tube through the rotating shaft, and a fifth bevel gear is provided at the end which is engaged with the third bevel gear.

[0010] As a further technical solution of the above scheme, the knocking mechanism includes a protective shell, a support frame, a drive assembly and an impact release component; the protective shell is arranged at the left end of the horizontal support rod through a first steering structure, and two support frames are provided, which are symmetrically arranged on both side walls of the protective shell for tightening the concrete support; the lower part of the impact release component is arranged in the protective shell, and the upper part passes through the protective shell for knocking the concrete; the drive assembly is arranged in the protective shell and is connected to the lower end of the impact release component, for driving the impact release component to intermittently knock the concrete.

[0011] As a further technical solution of the above scheme, the impact release component includes a support plate, a connecting rod, a moving rod, a knocking steel ball and a second spring; the two ends of the support plate are respectively fixedly connected to the inner side wall of the protective shell; the moving rod is vertically arranged through the support plate, the upper end is connected to the knocking steel ball, the lower end is hinged to the upper end of the connecting rod, and the lower end of the connecting rod is connected to the driving assembly; the moving rod is sleeved with a second spring, one end of the second spring is fixedly connected to the middle part of the moving rod, and the other end is fixedly connected to the upper end of the support plate; The driving assembly includes a motor, an output shaft, a turntable, a rotating rod and a gear lever; the turntable is eccentrically hinged to the lower part of the connecting rod; a gear lever is provided at the bottom of the connecting rod; the motor is arranged on the inner side 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; when the rotating rod rotates and touches the gear lever, it drives the gear lever and the connecting rod to rotate, and the moving rod and the knocking steel ball move downward to compress the second spring to store energy. When the rotating rod rotates away from the gear lever, the second spring releases energy to drive the knocking steel ball to rise and touch the concrete for knocking.

[0012] As a further technical solution of the above solution, the support frame and the echo receiver are at the same horizontal height.

[0013] As a further technical solution of the above-mentioned scheme, the structures of the first steering structure and the second steering structure are the same; the first steering structure includes an outer shell, a third spring, a push plate and a support rod; the outer shell is hollow to form an accommodation cavity, and the left end of the support rod is inserted into the end of the outer shell and connected to the push plate; the left end of the third spring is connected to the left inner wall of the outer 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 outer shell is provided with a first positioning hole and a second positioning hole, the first positioning hole is located above and to the side of the second positioning hole, and is connected by a slide groove in a quadrant arc, and the positioning rod moves along the slide groove to be inserted into the first positioning hole or the second positioning hole for positioning; the left end of the outer shell is connected to the knocking mechanism or the echo receiver, and the right end of the support rod is connected to the left end or right end of the horizontal support rod.

[0014] As a further technical solution of the above solution, it also includes a detection recorder, which is arranged on the side wall of the lower branch pipe and is electrically connected to the knocking mechanism and the echo receiver for recording impact echo data.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects: the present invention improves the working efficiency by providing a knocking mechanism instead of manual construction.

[0016] When testing concrete at heights, the positions of the upper and lower branches are adjusted, thereby adjusting the height of the device to adapt to the testing of concrete at heights; when testing different working surfaces such as the bottom and side walls of concrete beams, the angles of the knocking mechanism and the echo receiver are adjusted through the steering structure to allow them to be closer to the bottom or side walls of the concrete beams for testing, thereby expanding the scope of testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the folded structure of the device.

[0018] Figure 2 This is a structural diagram of the device in operation.

[0019] Figure 3 It is a schematic diagram of the longitudinal cross-section structure of the upper branch pipe and the lower branch pipe.

[0020] Figure 4 for Figure 3 A magnified schematic diagram of the structure in the middle.

[0021] Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0022] Figure 6 for Figure 3 Enlarged schematic diagram of the structure at point C in the middle.

[0023] Figure 7 Schematic diagram of the structure of the knocking mechanism.

[0024] Figure 8 Schematic diagram of the structure of the drive assembly and impact release components.

[0025] Figure 9 Schematic diagram of the structure of the first steering structure.

[0026] Figure 10 Schematic diagram of the shell structure.

[0027] The meanings of the numbers in the figure are: Lower branch-1; Upper branch-2; Detection Recorder-3; Horizontal support rod-4; left support rod-401; right support rod-402; Striking mechanism 5; protective housing 501; support frame 502; drive assembly 503; motor 5031; output shaft 5032; rotating rod 5033; turntable 5034; gear lever 5035; impact release component 504; support plate 5041; connecting rod 5042; second spring 5043; moving rod 5044; striking steel ball 5045; Echo Receiver-6; Steering fixing member 7; steering rod 701; limiting rod 702; steering shaft 703; rotating pull ring 704; socket 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; First steering structure 8; housing 801; housing 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; Groove-901; threaded sleeve-902; arc-shaped splint-903; upper folding rod-904; lower folding rod-905. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention, so as to have a further understanding of the concept of the present invention, the technical problems solved, the technical features constituting the technical solutions and the technical effects brought about.

[0029] like Figures 1-10 As shown, a device for detecting the quality of concrete by impact echo includes an upper branch pipe 2, a lower branch pipe 1, a horizontal support rod 4, a detection recorder 3, a knocking mechanism 5 and an echo receiver 6; Lower branch pipe 1, vertically arranged; The upper branch pipe 2 is vertically arranged and connected to the upper end of the lower branch pipe 1; A horizontal support rod 4 connected to the top of the upper branch pipe 2; The striking mechanism 5 is rotatably disposed on the left end of the horizontal support rod 4 through the first steering structure 8 and is used for striking the concrete; an echo receiver 6 rotatably disposed at the right end of the horizontal support rod 4 via a second steering structure, for receiving impact echoes generated by striking the concrete; When using this device, first connect the upper branch pipe 2 and the lower branch pipe 1 together, and adjust them according to the detection position of the concrete. When the knocking mechanism 5 and the echo receiver 6 reach the designated working position, they work, use the knocking mechanism 5 to knock on the concrete, and the echo receiver 6 receives the echo of the knocking and transmits it back to the detection record 3 for record; during the detection process, different surfaces of the concrete will be detected. At this time, the direction and position of the knocking mechanism 5 and the echo receiver 6 are adjusted by rotating the first steering structure 8 and the second steering structure to detect concrete on different surfaces. Using the knocking mechanism 5 instead of manual knocking improves the working efficiency.

[0030] like Figure 3 and Figure 5 As shown, as a preferred embodiment, the upper branch pipe 2 and the lower branch pipe 1 are connected by a folding rod; the side surfaces of 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, and the threaded sleeves 902 are connected to the grooves 901 through arc-shaped splints 903, and the outer side of the arc-shaped splints 903 is provided with threads that cooperate with the threaded sleeves 902, and the inner side is provided with protrusions corresponding to the grooves 901.

[0031] In this embodiment, the telescopic adjustment of the upper and lower branches 2 and 1 is primarily achieved by adjusting the length of the folding rod. A threaded connection is employed to achieve both length adjustment and a locking effect. The diameter of the threaded sleeve 902 gradually decreases from the inside to the outside. After tightening, an inward thrust is applied to the curved clamping plate 903, causing the curved clamping plate 903 to fit tightly against the outer surfaces of the upper and lower branches 2 and 1, achieving a locking effect through friction. Grooves 901 are provided on the outer surfaces of the upper and lower branches 2 and 1, and protrusions corresponding to the grooves 901 are provided on the inner surfaces of the curved clamping plate 903. This allows the curved clamping plate 903 to snap into the grooves 901 after being aligned with the upper and lower branches 1, significantly increasing the friction and securing effect between the curved clamping plate 903 and the upper and lower branches 1, resulting in a higher load-bearing capacity and a longer service life. By adjusting the length of the folding rod, the device can be used for concrete inspection at heights, thereby expanding its scope of application.

[0032] like Figure 1-Figure 3 As shown, as 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 branch tube 2, and the right support rod 402 is rotatably connected to the right end of the upper branch tube 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 branch tube 2 for connection, and the lower folding rod 905 is inserted into the lower branch tube 1 for connection; the upper folding rod 904 and the lower folding rod 905 are connected by a steering fixing member 7.

[0033] In this embodiment, the horizontal support rod 4 is configured as a two-section structure of a left support rod 401 and a right support rod 402, which are rotated and folded together to overlap with the folding rod when not in use (such as Figure 1 ) reduces the open area for easy storage; at the same time, the folding rod is also set as an upper folding rod 904 and a lower folding rod 905, which can be rotated and overlapped by the steering fixing member 7 when not in use for easy storage.

[0034] like Figure 4 and Figure 6 As shown, as a preferred embodiment, the steering fixing member 7 includes a steering rod 701 and a limiting rod 702; the steering rod 701 is horizontally arranged, one end of which is inserted into the lower branch tube 1 from the top side wall of the lower branch tube 1, and the end is connected to a steering shaft 703, the steering shaft 703 is fixedly connected to the bottom end of the upper branch tube 2, and the other end extends to the outside of the lower branch tube 1 and is provided with a rotating pull ring 704; the lower end of the upper branch tube 2 is provided with a plurality of insertion holes 705, the limiting rod 702 is arranged parallel to the steering rod 701, one end is inserted into the lower branch tube 1 from the top side wall of the lower branch tube 1, aligned with the insertion hole 705, and the other end extends to the outside of the lower branch tube 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 tube 1 inserted into the limiting rod 702.

[0035] In this embodiment, when steering is required, the handle 706 is first pulled to disengage the limit rod 702 from the limit of the socket 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, the upper branch pipe 2 is driven 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 limit rod 702 releases energy to drive the limit rod 702 to reset, and the limit rod 702 is inserted into another socket 705 to complete the limit fixation.

[0036] like Figure 4 and Figure 6 As shown, as a preferred embodiment, the upper branch tube 2 is hollow; the steering shaft 703 is provided with a first bevel gear 708 at the end near the upper branch tube 2; a vertical linkage shaft 709 is provided in the upper branch tube 2, and a second bevel gear 710 is provided at the lower end of the vertical linkage shaft 709, and the second bevel gear 710 is meshed with the first bevel gear 708; a third bevel gear 711 is provided at the upper end of the vertical linkage shaft 709, and the right end of the left support rod 401 is inserted into the upper branch tube 2 through the rotating shaft, and a fourth bevel gear 712 is provided at the end to mesh with the third bevel gear 711; the left end of the right support rod 402 is inserted into the upper branch tube 2 through the rotating shaft, and a fifth bevel gear 713 is provided at the end to mesh with the third bevel gear 711.

[0037] In this embodiment, when the rotating shaft 703 rotates, it drives the first bevel gear 708 to rotate. Since the first bevel gear 708 is engaged with the second bevel gear 710, the rotation of the second bevel gear 710 realizes the rotation of the vertical linkage shaft 709, and 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 are respectively engaged on both sides of the third bevel gear 711, the fourth bevel gear 712 and the fifth bevel gear 713 rotate synchronously but in opposite directions, thereby achieving the effect of synchronous expansion and folding of the left support rod 401 and the right support rod 402, thereby 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 rotating shaft driven by the bevel gear only rotates 90 degrees, so that the folding movement of the left support rod 401 and the right support rod 402 is consistent with the folding movement of the upper folding rod 904 and the lower folding rod 905.

[0038] like Figure 7As shown, as a preferred embodiment, the knocking 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 arranged at the left end of the horizontal support rod 4 through the first steering structure 8, and two support frames 502 are provided, which are symmetrically arranged on the two side walls of the protective shell 501 for tightening the concrete support; the lower part of the impact release component 504 is arranged in the protective shell 501, and the upper part passes through the protective shell 501 for knocking the concrete; the drive assembly 503 is arranged in the protective shell 501, connected to the lower end of the impact release component 504, and is used to drive the impact release component 504 to intermittently knock the concrete.

[0039] In this embodiment, the driving component 503 is used to intermittently drive the impact release component 504 to compress the potential energy. When the potential energy compression of the impact release component 504 is completed, the impact force is released, and the concrete is struck to generate a shock wave, thereby achieving an automatic knocking effect, which is convenient for use at high places. In addition, the impact release component 504 will be disconnected from the intermittent driving component 503 during the impact, so that the impact reaction force generated by it will not interfere with the intermittent driving component 503, thereby avoiding affecting the service life of the intermittent driving component 503.

[0040] like Figure 7 and Figure 8 As shown, as a preferred embodiment, the impact release component 504 includes a support plate 5041, a connecting rod 5042, a moving rod 5044, a knocking steel ball 5045 and a second spring 5043; both ends of the support plate 5041 are fixedly connected to the inner wall of the protective shell 501; the moving rod 5044 is vertically arranged through the support plate 5041, the upper end is connected to the knocking steel ball 5045, the lower end is hinged to the upper end of the connecting rod 5042, and the lower end of the connecting rod 5042 is connected to the driving assembly 503; the moving rod 5044 is sleeved with a second spring 5043, one end of the second spring 5043 is fixedly connected to the middle part of the moving rod 5044, and the other end is fixedly connected to the upper end of the support plate 5041; The driving assembly 503 includes a motor 5031, an output shaft 5032, a turntable 5034, a rotating rod 5033 and a gear rod 5035; the turntable 5034 is eccentrically hinged to the lower part of the connecting rod 5042; a gear rod 5035 is provided at the bottom of the connecting rod 5042; the motor 5031 is arranged on the inner side wall of the protective shell 501, and the output shaft of the motor 5031 passes through the turntable 5034, and a rotating rod 5033 is provided along the radial direction of the turntable 5034; after the rotating rod 5033 rotates and touches the gear rod 5035, it drives the gear rod 5035 and the connecting rod 5042 to rotate, and the moving rod 5044 and the knocking steel ball 5045 move downward to compress the second spring 5043 to store energy. When the rotating rod 5033 rotates away from the gear rod 5035, the second spring 5043 releases energy to drive the knocking steel ball 5045 to rise and touch the concrete for knocking.

[0041] In this embodiment, the disc 5034 is sleeved on the outside of the output shaft 5032 and is not directly connected to the output shaft, so that when the output shaft 5032 rotates, the disc 5034 will not be driven to rotate. Only when the rotating rod 5033 on the side of the output shaft 5032 is in contact with the blocking rod 5035, the disc 5034 will rotate under the thrust and drive the potential energy of the impact release component 504 to be compressed. When 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 blocking rod 5035 on the side of the disc 5034 is on the same side, so that the disc 5034 and the blocking rod 5035 lose the restriction of the rotating rod 5033, and the impact release component 504 drives the reset, thereby achieving the effect of intermittent driving of the impact release component 504, and when the impact release component 504 releases the impact force, it is not connected to its transmission, thereby avoiding the influence of the counter-impact force. When the impact is released, the support plate 5041 supports the moving rod 5044 and limits it to moving in a straight line. At the same time, when the disc 5034 rotates, the moving rod 5044 will be pulled downward through the connecting rod 5042, and the moving rod 5044 will compress the second spring 5043 downward, so that the second spring 5043 is in a potential energy compression state. When the blocking rod 5035 on the disc 5034 is separated from the rotating rod 5033, the compressed second spring 5043 releases the elastic force, driving the moving rod 5044 to move upward, and at the same time driving the steel ball 5045 to knock on the concrete, achieving the effect of automatically knocking on the concrete.

[0042] like Figure 2 and Figure 3 As shown, as a preferred embodiment, the support frame 502 is at the same level as the echo receiver 6. In this embodiment, the support frame 502 is arranged as a support and is flush with the echo receiver 6 at the same level to improve the effect of echo reception.

[0043] like Figure 9 and Figure 10As shown, as a preferred embodiment, the structures of the first steering structure 8 and the second steering structure are the same; the first steering structure 8 includes a shell 801, a third spring 803, a push plate 804 and a support rod 805; the shell 801 is hollow to form a placement cavity 802, and the left end of the support rod 805 is inserted into the end of the shell 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 shell 801, and the right end is connected to the left side of the push plate 804, and a positioning rod 806 is provided on the right side of the push plate 804; the right inner wall of the shell 801 is provided with a first positioning hole 807 and a second positioning hole 808, the first positioning hole 807 is located above and to the side of the second positioning hole 808, and is connected by a slide groove 809 in a quadrant arc, and the positioning rod 806 moves along the slide groove 809 to be inserted into the first positioning hole 807 or the second positioning hole 808 for positioning; the left end of the shell 801 is connected to the knocking mechanism 5 or the echo receiver 6, and the right end of the support rod 805 is connected to the left end or right end of the horizontal support rod 4.

[0044] In this embodiment, the fixing effect is achieved by plugging the positioning rod 806 into the first positioning hole 807 or the second positioning hole 808, and then the steering effect is achieved by rotating the push plate 804 and the support rod 805. When it is necessary to detect the bottom of the concrete slab, the push plate 804 is plugged into the first positioning hole 807 by using the positioning rod 806, so that the support rod 805 drives the knocking mechanism 5 and the echo receiver 6 to remain vertical. When it is necessary to detect the side of the concrete beam, the support rod 805 and the push plate 804 are pressed inward to separate the positioning rod 806 on the push plate 804 from the first positioning hole 807, and then the support rod 805 and the push plate 808 are rotated. The second steering structure is similar to the first steering structure 8, and the echo receiver 6 is driven by the same motion as the first steering structure 8, and the echo receiver 6 is driven by the same motion as the first steering structure 8, so that the echo receiver 6 is rotated in the same direction as the knocking mechanism 5.

[0045] like Figure 1 and Figure 2As shown, as a preferred embodiment, a detection recorder 3 is further included, which is installed on the side wall of the lower branch pipe 1 and is electrically connected to the knocking mechanism 5 and the echo receiver 6 for recording the impact echo data. In this embodiment, to facilitate the recording of echo detection data, the detection recorder 3 is directly installed on the lower branch pipe 1, ensuring the accuracy of the data at a close distance.

[0046] The terms "connection" and "fixation" appearing in the description of the present invention may refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meanings of the above terms in the present invention shall be understood according to the specific circumstances.

[0047] In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., which indicate the orientation or position relationship, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for detecting the quality of concrete by impact echo, characterized in that: It includes an upper branch pipe (2), a lower branch pipe (1), a horizontal support rod (4), a knocking mechanism (5) and an echo receiver (6); The lower branch pipe (1) is arranged vertically; An upper branch pipe (2) is vertically arranged and connected to the upper end of the lower branch pipe (1); A horizontal support rod (4) connected to the top of the upper branch pipe (2); A knocking mechanism (5) is rotatably arranged at the left end of the horizontal support rod (4) through a first steering structure (8) and is used for knocking concrete; The echo receiver (6) is rotatably arranged at the right end of the horizontal support rod (4) through the second steering structure, and is used to receive the impact echo generated by striking the concrete.

2. The impact echo detection device for concrete quality according to claim 1, characterized in that: The upper branch pipe (2) and the lower branch pipe (1) are connected by a folding rod; the side surfaces of 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), and the threaded sleeves (902) are connected to the grooves (901) through arc-shaped clamping plates (903); the outer side of the arc-shaped clamping plates (903) is provided with threads that cooperate with the threaded sleeves (902), and the inner side is provided with protrusions corresponding to the grooves (901).

3. The impact echo detection device for concrete quality according to claim 2, characterized in that: The horizontal support rod (4) comprises 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 branch tube (2), and the right support rod (402) is rotatably connected to the right end of the upper branch tube (2); the folding rod comprises an upper folding rod (904) and a lower folding rod (905); the upper folding rod (904) is inserted into the upper branch tube (2) for connection, and the lower folding rod (905) is inserted into the lower branch tube (1) for connection; the upper folding rod (904) and the lower folding rod (905) are connected via a steering fixing member (7).

4. The impact echo detection device for concrete quality according to claim 3, characterized in that: The steering fixing member (7) comprises a steering rod (701) and a limiting rod (702); the steering rod (701) is arranged horizontally, one end of which is inserted into the lower branch tube (1) from the top side wall of the lower branch tube (1), and the end thereof is connected to a steering shaft (703), the steering shaft (703) is fixedly connected to the bottom end of the upper branch tube (2), and the other end thereof extends to the outside of the lower branch tube (1) and is provided with a rotating pull ring (704); the lower end of the upper branch tube (2) is provided with a plurality of jacks (705), and the limiting rod (702) is provided with a plurality of jacks (705). The first spring (707) is provided 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 tube (1) where the limiting rod (702) is inserted.

5. The impact echo detection device for concrete quality according to claim 4, characterized in that: The upper branch tube (2) is hollow; the steering shaft (703) is provided with a first bevel gear (708) at the end thereof close to the upper branch tube (2); a vertical linkage shaft (709) is provided in the upper branch tube (2); a second bevel gear (710) is provided at the lower end of the vertical linkage shaft (709), and the second bevel gear (710) is meshed 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 tube (2) via a rotating shaft, and a fourth bevel gear (712) is provided at the end thereof, meshing with the third bevel gear (711); the left end of the right support rod (402) is inserted into the upper branch tube (2) via a rotating shaft, and a fifth bevel gear (713) is provided at the end thereof, meshing with the third bevel gear (711).

6. The impact echo detection device for concrete quality according to claim 1, characterized in that: The knocking mechanism (5) comprises a protective shell (501), a support frame (502), a driving assembly (503) and an impact release component (504); the protective shell (501) is arranged at the left end of the horizontal support rod (4) through a first steering structure (8); two support frames (502) are provided, symmetrically arranged on both side walls of the protective shell (501) for pressing against concrete support; the lower part of the impact release component (504) is arranged in the protective shell (501), and the upper part passes through the protective shell (501) for knocking concrete; the driving assembly (503) is arranged in the protective shell (501), connected to the lower end of the impact release component (504), and is used to drive the impact release component (504) to intermittently knock concrete.

7. The impact echo detection device for concrete quality according to claim 6, characterized in that: The impact release component (504) comprises a support plate (5041), a connecting rod (5042), a moving rod (5044), a knocking steel ball (5045) and a second spring (5043); both ends of the support plate (5041) are fixedly connected to the inner wall of the protective shell (501); the moving rod (5044) is vertically arranged to pass through the support plate (5041), the upper end of which is connected to the knocking steel ball (5045), the lower end of which is hinged to the upper end of the connecting rod (5042), and the lower end of the connecting rod (5042) is connected to the driving assembly (503); the moving rod (5044) is sleeved with a second spring (5043), one end of the second spring (5043) is fixedly connected to the middle part of the moving rod (5044), and the other end is fixedly connected to the upper end of the support plate (5041); The driving assembly (503) comprises a motor (5031), an output shaft (5032), a rotating disk (5034), a rotating rod (5033) and a shift lever (5035); the rotating disk (5034) is eccentrically hinged to the lower portion of the connecting rod (5042); a shift lever (5035) is provided at the bottom of the connecting rod (5042); the motor (5031) is arranged on the inner side wall of the protective shell (501); the output shaft of the motor (5031) passes through the rotating disk (5034) and is rotated along the rotating disk (5034). 4) is provided with a rotating rod (5033) in the radial direction; when the rotating rod (5033) rotates and touches the shift rod (5035), the shift rod (5035) and the connecting rod (5042) are driven to rotate, and the moving rod (5044) and the knocking steel ball (5045) move downward to compress the second spring (5043) to store energy; when the rotating rod (5033) rotates away from the shift rod (5035), the second spring (5043) releases energy and drives the knocking steel ball (5045) to rise and touch the concrete for knocking.

8. The impact echo detection device for concrete quality according to claim 6, characterized in that: The support frame (502) and the echo receiver (6) are at the same level.

9. The impact echo detection device for concrete quality according to claim 1, characterized in that: 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 placement cavity (802), 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 (805) is provided on the right side of the push plate (804). 06); a first positioning hole (807) and a second positioning hole (808) are provided on the right inner wall of the housing (801); the first positioning hole (807) is located above and to the side of the second positioning hole (808), and is connected by a sliding groove (809) in a quadrant arc; the positioning rod (806) moves along the sliding groove (809) and is 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 knocking mechanism (5) or the echo receiver (6), and the right end of the support rod (805) is connected to the left end or the right end of the horizontal support rod (4).

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

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