Road and bridge concrete detection device

Abstract

The utility model discloses a road and bridge concrete detection device, which relates to the technical field of road and bridge engineering, and comprises a vehicle body, universal wheels, wheels, a handle, a protective shell, a display and a control panel, and further comprises a fixing assembly which is arranged on the vehicle body, is used for fixing the vehicle body in a static state and is convenient for springback detection; the ultrasonic measuring assembly is arranged on the protective shell; the adjusting assembly is arranged on the vehicle body; the springback measuring assembly is arranged on the adjusting assembly and used for being matched with the ultrasonic measuring assembly, and the springback measuring assembly is arranged on the adjusting assembly; through the cooperation of the ultrasonic measurement assembly and the rebound measurement assembly, the ultrasonic measurement assembly is firstly used for detecting the internal structure of concrete, then the rebound measurement assembly is used for detecting the surface strength of the concrete, and comprehensive data of the concrete are calculated by measuring a sound time value and a rebound value. Therefore, the detection device is high in precision and strong in adaptability.

Description

TECHNICAL FIELD

[0001] The utility model relates to road and bridge engineering technical field especially, relate to a road and bridge concrete detection device. BACKGROUND

[0002] The concrete quality inspection can be divided into three aspects of internal quality, surface quality and shape size quality, the evaluation of concrete strength should be carried out in batches, the same acceptance batch of concrete applies the same concrete of mixing proportion and production process, the cast-in-place concrete is divided into acceptance batch according to subproject, and the component of precast concrete is divided into batches according to month.

[0003] The existing patent with the authorization announcement number CN221925865U discloses a kind of road and bridge concrete detection devices, including base, the top of base is fixedly connected with connecting block, the top of connecting block is fixedly connected with mounting plate, control panel is provided at the top of mounting plate, the top of mounting plate is fixedly connected with rectangular box, motor is fixedly connected on the inner wall of one side of rectangular box, driving screw is fixedly set on the output shaft of motor, moving block is threadedly set on the outer wall of driving screw, and moving block is connected with mounting plate, the bottom of moving block extends to the bottom of mounting plate and is fixedly connected with electric telescopic rod, multiple rebound apparatuses are adjusted to translate by starting motor through control panel, and detection can be carried out by starting rebound apparatus and inserting into the hole of circular frame, and circular frame plays the positioning role, in turn, without manually drawing detection range.

[0004] The above-mentioned detection device still has defects, the above-mentioned device uses rebound measurement method to measure concrete, although the device is simple and convenient to measure, but it is easy to be affected by the difference between the structure surface and the interior of concrete, cannot directly reflect the strength of the interior of concrete, and further reduces the accuracy and adaptability of detection. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a road and bridge concrete detection device, to solve the problems that the above-mentioned detection device cannot directly reflect the strength of the interior of concrete and has low detection accuracy and adaptability.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] A road and bridge concrete detection device, including vehicle body, universal wheel, wheel, handle, protective shell, display and control panel, further comprising:

[0008] Fixing assembly, arranged on the vehicle body, for fixing the vehicle body in a stationary state, facilitating rebound detection;

[0009] Ultrasonic measurement assembly, arranged on the protective shell;

[0010] An adjusting assembly is arranged on the vehicle body.

[0011] A rebound measuring assembly is arranged on the adjusting assembly, and is used in cooperation with the ultrasonic measuring assembly to comprehensively evaluate the strength of the concrete and identify defects, and obtain comprehensive and detailed detection values.

[0012] Preferably, the fixing assembly comprises:

[0013] A mounting block is arranged on the vehicle body, and the mounting block is fixedly connected with the vehicle body.

[0014] A first hydraulic cylinder is arranged on the mounting block, and the first hydraulic cylinder is fixedly connected with the mounting block.

[0015] A first hydraulic rod is arranged on the first hydraulic cylinder, and the first hydraulic rod is slidingly connected with the first hydraulic cylinder.

[0016] A first fixing plate is arranged on the first hydraulic rod, and the first fixing plate is fixedly connected with the first hydraulic rod.

[0017] A mounting plate is arranged on the vehicle body, and the mounting plate is fixedly connected with the vehicle body.

[0018] A second hydraulic cylinder is arranged on the mounting plate, and the second hydraulic cylinder is fixedly connected with the mounting plate.

[0019] A second hydraulic rod is arranged on the second hydraulic cylinder, and the second hydraulic rod is slidingly connected with the second hydraulic cylinder.

[0020] A second fixing plate is arranged on the second hydraulic rod, and the second fixing plate is fixedly connected with the second hydraulic rod.

[0021] Preferably, the ultrasonic measuring assembly comprises:

[0022] A driving motor is arranged on the protective shell, and the driving motor is fixedly connected with the protective shell.

[0023] A threaded rod is arranged on the output shaft of the driving motor, and the threaded rod is fixedly connected with the output shaft of the driving motor.

[0024] A lifting platform is arranged on the protective shell, and the lifting platform is slidingly connected with the protective shell, and the lifting platform is threadedly connected with the threaded rod.

[0025] An ultrasonic probe head is arranged on the lifting platform, and the ultrasonic probe head is fixedly connected with the lifting platform.

[0026] Preferably, the adjusting assembly comprises:

[0027] a housing arranged on the vehicle body, the housing being fixedly connected with the vehicle body;

[0028] a servo motor arranged on the housing, the servo motor being fixedly connected with the housing;

[0029] a lead screw arranged on the housing, the lead screw being rotatably connected with the housing, and the lead screw being fixedly connected with an output shaft of the servo motor;

[0030] a sliding block arranged on the housing, the sliding block being slidably connected with the housing, and the sliding block being threadedly connected with the lead screw;

[0031] an electric telescopic rod arranged on the sliding block, the electric telescopic rod being fixedly connected with the sliding block.

[0032] Preferably, the rebound measuring assembly comprises:

[0033] a base arranged on the electric telescopic rod, the base being fixedly connected with the electric telescopic rod;

[0034] a rebound hammer arranged on the base, the rebound hammer being fixedly connected with the base;

[0035] an infrared receiving device arranged on the base, the infrared receiving device being fixedly connected with the base;

[0036] a connecting plate arranged on the vehicle body, the connecting plate being fixedly connected with the vehicle body;

[0037] a positioning frame arranged on the connecting plate, the positioning frame being fixedly connected with the connecting plate;

[0038] an infrared emitting device arranged on the connecting plate, the infrared emitting device being fixedly connected with the connecting plate.

[0039] Preferably, the rebound hammers are evenly distributed on the base.

[0040] Preferably, the connecting plates are evenly distributed on the vehicle body.

[0041] Preferably, the positioning frames are evenly distributed on the connecting plates.

[0042] Preferably, the number of the rebound hammers is consistent with the number of the positioning frames.

[0043] Preferably, the display is used for processing and displaying the results detected by the ultrasonic detecting assembly and the rebound detecting assembly, so as to comprehensively evaluate the strength of the concrete and identify defects.

[0044] Therefore, the road bridge concrete detection device has the advantages that:

[0045] 1、Through the cooperation of the ultrasonic measurement assembly and the rebound measurement assembly, the internal structure of the concrete is detected by the ultrasonic measurement assembly, and then the surface strength of the concrete is detected by the rebound measurement assembly, the comprehensive data of the concrete is calculated through the measurement of the sound time value and the rebound value, and thus the detection device is high in precision and strong in adaptability.

[0046] 2、Through the cooperation of the first hydraulic cylinder, the first hydraulic rod, the first fixed plate, the second hydraulic cylinder, the second hydraulic rod and the second fixed plate, the device is fixed on the road surface for rebound detection, and thus the accuracy of the rebound detection is improved. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the following described drawings are only some embodiments of the present application, and for the ordinary skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0048] Figure 1 A perspective view of a road bridge concrete detection device is shown.

[0049] Figure 2 A top view of a road bridge concrete detection device is shown.

[0050] Figure 3 A sectional view of A-A in the Figure 2

[0051] Figure 4 A partial enlarged view of A is shown. Figure 3

[0052] Figure 5 A bottom view of a road bridge concrete detection device is shown.

[0053] Figure 6 A partial enlarged view of B is shown. Figure 5

[0054] LEGEND:

[0055] ​​​1, vehicle body; 2, universal wheel; 3, wheel; 4, handle; 5, protective shell; 6, display; 7, control panel; 8, driving motor; 9, threaded rod; 10, lifting platform; 11, ultrasonic probe; 12, mounting block; 13, first hydraulic cylinder; 14, first hydraulic rod; 15, first fixed plate; 16, mounting plate; 17, second hydraulic cylinder; 18, second hydraulic rod; 19, second fixed plate; 20, shell; 21, servo motor; 22, screw rod; 23, sliding block; 24, electric telescopic rod; 25, base; 26, rebound instrument; 27, infrared receiving device; 28, connecting plate; 29, positioning frame; 30, infrared transmitting device. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0057] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0058] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there can be a middle component. When a component is referred to as "provided on" another component, it can be directly provided on the other component or there can be a middle component. The terms "vertical", "horizontal", "left", "right" and the like used in this document are only for illustrative purposes.

[0059] In addition, the terms "first", "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0060] Reference Figures 1 to 6 The utility model discloses a road bridge concrete detection device embodiment makes further explanation.

[0061] A road bridge concrete detection device, including car body 1, universal wheel 2, wheel 3, handle 4, protective shell 5, display 6 and control panel 7, still including:

[0062] Fixing assembly is arranged on the car body 1, is used for fixing the car body 1 in stationary state, and rebound detection is facilitated, the fixing assembly includes:

[0063] Mounting block 12 is arranged on the car body 1, and the mounting block 12 is fixedly connected with the car body 1;

[0064] First hydraulic cylinder 13 is arranged on the mounting block 12, and the first hydraulic cylinder 13 is fixedly connected with the mounting block 12;

[0065] First hydraulic rod 14 is arranged on the first hydraulic cylinder 13, and the first hydraulic rod 14 is slidably connected with the first hydraulic cylinder 13;

[0066] First fixed plate 15 is arranged on the first hydraulic rod 14, and the first fixed plate 15 is fixedly connected with the first hydraulic rod 14;

[0067] Mounting plate 16 is arranged on the car body 1, and the mounting plate 16 is fixedly connected with the car body 1;

[0068] Second hydraulic cylinder 17 is arranged on the mounting plate 16, and the second hydraulic cylinder 17 is fixedly connected with the mounting plate 16;

[0069] Second hydraulic rod 18 is arranged on the second hydraulic cylinder 17, and the second hydraulic rod 18 is slidably connected with the second hydraulic cylinder 17;

[0070] Second fixed plate 19 is arranged on the second hydraulic rod 18, and the second fixed plate 19 is fixedly connected with the second hydraulic rod 18.

[0071] The first hydraulic cylinder 13 and the second hydraulic cylinder 17 are started through the control panel 7, the liquid in the first hydraulic cylinder 13 pushes the first hydraulic rod 14 which is in sliding connection with the first hydraulic cylinder 13 to move downward, thereby driving the first fixed plate 15 which is in fixed connection with the first hydraulic rod 14 to move downward, when the first fixed plate 15 contacts the road surface, the first fixed plate 15 cannot move downward, so the first hydraulic rod 14 also cannot move downward, so at this time the first hydraulic cylinder 13 is pushed upward by the liquid, the upward movement of the first hydraulic cylinder 13 drives the mounting block 12 which is in fixed connection with the first hydraulic cylinder 13 to move upward, thereby driving the vehicle body 1 which is in fixed connection with the mounting block 12 to move upward, the movement principle of the second hydraulic cylinder 17 and the second hydraulic rod 18 is the same as above, until the wheels 3 and the universal wheels 2 on the vehicle body 1 leave the ground, the first hydraulic cylinder 13 is closed and the second hydraulic cylinder 17 is started.

[0072] With reference to Figures 1 to 6 By the arrangement of the first hydraulic cylinder 13, the first hydraulic rod 14, the first fixed plate 15, the second hydraulic cylinder 17, the second hydraulic rod 18 and the second fixed plate 19, the cooperation of the first hydraulic cylinder 13, the first hydraulic rod 14 and the first fixed plate 15 and the cooperation of the second hydraulic cylinder 17, the second hydraulic rod 18 and the second fixed plate 19 make the device fixed on the road surface for rebound detection, thereby improving the accuracy of rebound detection.

[0073] An ultrasonic measurement assembly is arranged on the protective shell 5, the ultrasonic measurement assembly comprises:

[0074] A driving motor 8 is arranged on the protective shell 5, the driving motor 8 is in fixed connection with the protective shell 5;

[0075] A threaded rod 9 is arranged on the output shaft of the driving motor 8, the threaded rod 9 is in fixed connection with the output shaft of the driving motor 8;

[0076] A lifting platform 10 is arranged on the protective shell 5, the lifting platform 10 is in sliding connection with the protective shell 5, the lifting platform 10 is in threaded connection with the threaded rod 9;

[0077] An ultrasonic probe 11 is arranged on the lifting platform 10, the ultrasonic probe 11 is in fixed connection with the lifting platform 10.

[0078] When the ultrasonic measurement is performed, the driving motor 8 is started by the control panel 7, the output shaft of the driving motor 8 rotates to drive the threaded rod 9 fixedly connected with the output shaft of the driving motor 8 to rotate, thereby driving the lifting platform 10 threadedly connected with the threaded rod 9 to rotate downward, since the lifting platform 10 is limited to slide within the protective shell 5 by the sliding connection, thereby driving the ultrasonic probe 11 fixedly connected with the lifting platform 10 to move downward, until the lower end surface of the ultrasonic probe 11 is aligned with the lower end surface of the vehicle body 1, the driving motor 8 is turned off, and the ultrasonic probe 11 is started to detect, and the detection result is sent to the display 6.

[0079] With reference to Figures 1 to 6 , an adjusting assembly is arranged on the vehicle body 1, and the adjusting assembly comprises:

[0080] A shell 20 is arranged on the vehicle body 1, and the shell 20 is fixedly connected with the vehicle body 1;

[0081] A servo motor 21 is arranged on the shell 20, and the servo motor 21 is fixedly connected with the shell 20;

[0082] A lead screw 22 is arranged on the shell 20, and the lead screw 22 is rotationally connected with the shell 20, and the lead screw 22 is fixedly connected with the output shaft of the servo motor 21;

[0083] A sliding block 23 is arranged on the shell 20, and the sliding block 23 is slidingly connected with the shell 20, and the sliding block 23 is threadedly connected with the lead screw 22;

[0084] An electric telescopic rod 24 is arranged on the sliding block 23, and the electric telescopic rod 24 is fixedly connected with the sliding block 23.

[0085] When it is necessary to adjust the horizontal position of the rebound instrument 26, the electric telescopic rod 24 is retracted by the control panel 7, the retraction of the electric telescopic rod 24 drives the base 25 fixedly connected with the electric telescopic rod 24 to move upward, thereby driving the rebound instrument 26 fixedly connected with the base 25 to move upward, until the bottom end of the rebound instrument 26 is separated from the positioning frame 29, the electric telescopic rod 24 is turned off, the servo motor 21 is started, the output shaft of the servo motor 21 rotates to drive the lead screw 22 fixedly connected with the output shaft of the servo motor 21 to rotate, thereby driving the sliding block 23 threadedly connected with the lead screw 22 to rotate, since the sliding block 23 is limited to move on the shell 20 by the sliding connection of the shell 20, thereby driving the electric telescopic rod 24 fixedly connected with the sliding block 23 to move in translation, the movement in translation of the electric telescopic rod 24 drives the base 25 fixedly connected with the electric telescopic rod 24 to move in translation, thereby driving the rebound instrument 26 fixedly connected with the base 25 to move in translation, until the infrared receiving device 27 on the base 25 receives the infrared emitted by the specified infrared emitting device 30, and the servo motor 21 is turned off.

[0086] With reference to Figures 1 to 6 , a rebound measuring assembly is arranged on the adjusting assembly and is used in cooperation with the ultrasonic measuring assembly to comprehensively evaluate the strength of the concrete and identify defects, to obtain comprehensive and detailed detection values, the rebound measuring assembly comprises:

[0087] a base 25 arranged on the electric telescopic rod 24, the base 25 is fixedly connected with the electric telescopic rod 24;

[0088] a rebound hammer 26 arranged on the base 25, the rebound hammer 26 is fixedly connected with the base 25, the rebound hammer 26 is a plurality of and is evenly distributed on the base 25;

[0089] an infrared receiving device 27 arranged on the base 25, the infrared receiving device 27 is fixedly connected with the base 25;

[0090] a connecting plate 28 arranged on the vehicle body 1, the connecting plate 28 is fixedly connected with the vehicle body 1, the connecting plate 28 is a plurality of and is evenly distributed on the vehicle body 1;

[0091] a positioning frame 29 arranged on the connecting plate 28, the positioning frame 29 is fixedly connected with the connecting plate 28, the positioning frame 29 is a plurality of and is evenly distributed on the connecting plate 28, the number of the rebound hammers 26 is consistent with the number of the positioning frames 29;

[0092] an infrared transmitting device 30 arranged on the connecting plate 28, the infrared transmitting device 30 is fixedly connected with the connecting plate 28.

[0093] The rebound hammers 26 are started by the control panel 7, a plurality of the rebound hammers 26 are inserted into the positioning frames 29 to contact the concrete to perform detection, and the detection results are sent to the display 6.

[0094] Through cooperation of the ultrasonic measuring assembly and the rebound measuring assembly, the ultrasonic measuring assembly is used to detect the internal structure of the concrete, the rebound measuring assembly is used to detect the surface strength of the concrete, the correlation between the sound time value and the rebound value is analyzed comprehensively, the comprehensive data of the concrete is calculated, and thus the detection device is high in precision and strong in adaptability.

[0095] Working principle: with reference to Figures 1 to 6, the first hydraulic cylinder 13 is pushed up by the liquid, the first hydraulic cylinder 13 moving upwards drives the fixed connection of the mounting block 12 to move upwards, thereby driving the fixed connection of the vehicle body 1 to move upwards, the movement principle of the second hydraulic cylinder 17 and the second hydraulic rod 18 is the same as above, until the wheels 3 and the universal wheels 2 on the vehicle body 1 leave the ground, the first hydraulic cylinder 13 is closed and the second hydraulic cylinder 17 is started;

[0096] When the ultrasonic measurement is performed, the driving motor 8 is started by the control panel 7, the output shaft of the driving motor 8 rotates to drive the threaded rod 9 fixedly connected with the output shaft of the driving motor 8 to rotate, thereby driving the lifting platform 10 threadedly connected with the threaded rod 9 to rotate downwards, since the lifting platform 10 is limited to slide downwards in the protective shell 5, thereby driving the ultrasonic probe 11 fixedly connected with the lifting platform 10 to move downwards, until the lower end surface of the ultrasonic probe 11 is aligned with the lower end surface of the vehicle body 1, the driving motor 8 is closed, the rebound apparatus 26 is started by the control panel 7, a plurality of rebound apparatuses 26 are inserted into the positioning frame 29 to contact the concrete for detection, and the detection result is sent to the display 6;

[0097] Referring to Figures 1 to 6 When it is necessary to adjust the horizontal position of the rebound apparatus 26, the electric telescopic rod 24 is retracted by the control panel 7, the electric telescopic rod 24 retracted drives the fixed connection of the base 25 to move upwards, thereby driving the fixed connection of the rebound apparatus 26 to move upwards, until the bottom end of the rebound apparatus 26 is separated from the positioning frame 29, the electric telescopic rod 24 is closed, the servo motor 21 is started, the output shaft of the servo motor 21 rotates to drive the screw rod 22 fixedly connected with the output shaft of the servo motor 21 to rotate, thereby driving the sliding block 23 threadedly connected with the screw rod 22 to rotate, since the sliding block 23 is limited to move horizontally on the shell 20, thereby driving the fixed connection of the electric telescopic rod 24 to move horizontally, the electric telescopic rod 24 moving horizontally drives the fixed connection of the base 25 to move horizontally, thereby driving the fixed connection of the rebound apparatus 26 to move horizontally, until the infrared receiving device 27 on the base 25 receives the infrared emitted by the specified infrared emitting device 30, the servo motor 21 is closed.

[0098] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A road and bridge concrete testing device, comprising a vehicle body (1), casters (2), wheels (3), handles (4), a protective shell (5), a display (6), and a control panel (7), characterized in that, Also includes: A fixing component is provided on the vehicle body (1) for fixing the vehicle body (1) in a stationary state, so as to facilitate rebound detection; An ultrasonic measuring component is mounted on the protective shell (5); The ultrasonic measurement component includes: A drive motor (8) is mounted on the protective shell (5), and the drive motor (8) is fixedly connected to the protective shell (5); A threaded rod (9) is disposed on the output shaft of the drive motor (8), and the threaded rod (9) is fixedly connected to the output shaft of the drive motor (8); A lifting platform (10) is mounted on the protective shell (5). The lifting platform (10) is slidably connected to the protective shell (5), and the lifting platform (10) is threadedly connected to the threaded rod (9). An ultrasonic probe (11) is mounted on the lifting platform (10), and the ultrasonic probe (11) is fixedly connected to the lifting platform (10). An adjustment component is provided on the vehicle body (1); A rebound measurement component, mounted on the adjustment component, is used in conjunction with the ultrasonic measurement component to comprehensively assess the strength of concrete and identify defects, thereby obtaining comprehensive and detailed test values.

2. The road and bridge concrete testing device according to claim 1, characterized in that, The fixing component includes: Mounting block (12) is disposed on the vehicle body (1) and the mounting block (12) is fixedly connected to the vehicle body (1); A first hydraulic cylinder (13) is mounted on the mounting block (12), and the first hydraulic cylinder (13) is fixedly connected to the mounting block (12); A first hydraulic rod (14) is mounted on the first hydraulic cylinder (13), and the first hydraulic rod (14) is slidably connected to the first hydraulic cylinder (13); A first fixing plate (15) is disposed on the first hydraulic rod (14), and the first fixing plate (15) is fixedly connected to the first hydraulic rod (14); Mounting plate (16) is disposed on the vehicle body (1) and the mounting plate (16) is fixedly connected to the vehicle body (1); The second hydraulic cylinder (17) is mounted on the mounting plate (16) and is fixedly connected to the mounting plate (16); The second hydraulic rod (18) is mounted on the second hydraulic cylinder (17), and the second hydraulic rod (18) is slidably connected to the second hydraulic cylinder (17); The second fixing plate (19) is disposed on the second hydraulic rod (18), and the second fixing plate (19) is fixedly connected to the second hydraulic rod (18).

3. The road and bridge concrete testing device according to claim 2, characterized in that, The adjustment component includes: The outer shell (20) is disposed on the vehicle body (1) and the outer shell (20) is fixedly connected to the vehicle body (1); A servo motor (21) is mounted on the housing (20), and the servo motor (21) is fixedly connected to the housing (20); A lead screw (22) is mounted on the housing (20), the lead screw (22) is rotatably connected to the housing (20), and the lead screw (22) is fixedly connected to the output shaft of the servo motor (21); A slider (23) is disposed on the outer shell (20), the slider (23) is slidably connected to the outer shell (20), and the slider (23) is threadedly connected to the lead screw (22); An electric telescopic rod (24) is mounted on the slider (23), and the electric telescopic rod (24) is fixedly connected to the slider (23).

4. The road and bridge concrete testing device according to claim 3, characterized in that, The springback measurement component includes: A base (25) is disposed on the electric telescopic rod (24), and the base (25) is fixedly connected to the electric telescopic rod (24); A rebound spring (26) is mounted on the base (25), and the rebound spring (26) is fixedly connected to the base (25); An infrared receiver (27) is mounted on the base (25) and is fixedly connected to the base (25); A connecting plate (28) is disposed on the vehicle body (1), and the connecting plate (28) is fixedly connected to the vehicle body (1); A positioning frame (29) is disposed on the connecting plate (28), and the positioning frame (29) is fixedly connected to the connecting plate (28); An infrared emitting device (30) is disposed on the connecting plate (28), and the infrared emitting device (30) is fixedly connected to the connecting plate (28).

5. A road and bridge concrete testing device according to claim 4, characterized in that, There are several rebounders (26), which are evenly distributed on the base (25).

6. A road and bridge concrete testing device according to claim 5, characterized in that, There are several connecting plates (28), which are evenly distributed on the vehicle body (1).

7. A road and bridge concrete testing device according to claim 6, characterized in that, There are several positioning frames (29), which are evenly distributed on the connecting plate (28).

8. A road and bridge concrete testing device according to claim 7, characterized in that, The number of rebound springs (26) is the same as the number of positioning frames (29).

9. A road and bridge concrete testing device according to claim 8, characterized in that, The display (6) is used to process and display the results of the ultrasonic testing component and the rebound testing component, so as to facilitate the comprehensive evaluation of the strength of concrete and the identification of defects.

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