Continuous detection device for strength of recycled concrete

Abstract

The invention belongs to the technical field of concrete strength detection equipment, and discloses a recycled concrete strength continuous detection device which comprises a base frame, a control cabinet is fixedly connected to the base frame, a supporting frame arranged on the left side of the control cabinet is connected to the base frame, and a lifting column is connected to the interior of the supporting frame in an up-down sliding mode. The lifting column is connected with a hydraulic lifting device arranged in the base frame, the hydraulic lifting device is connected with a control cabinet, the upper end of the lifting column is fixedly connected with a detection platform, a pressurizing plate is arranged above the detection platform and connected with the supporting frame in an up-down sliding mode, and the upper end of the pressurizing plate is fixedly connected with a lifting adjusting screw rod. The lifting adjusting screw rod is in threaded connection with a driving threaded sleeve rotationally connected to the upper end of the supporting frame, and the driving threaded sleeve is externally connected with a driving source; and the practicability is high.

Description

Technical Field

[0001] The invention relates to the technical field of concrete strength detection equipment, in particular to a recycled concrete strength continuous detection device. Background Art

[0002] Recycled concrete refers to new concrete made by crushing, cleaning, and grading discarded concrete blocks, mixing them with grading in a certain proportion, partially or completely replacing natural aggregates such as sand and gravel (mainly coarse aggregate), and then adding cement, water, etc. During the preparation of recycled concrete, it is necessary to test the strength of the recycled concrete. At present, the strength test process of recycled concrete is mainly as follows: the recycled concrete blocks to be tested are placed on the testing platform, and then the testing pressure head is pressed down to test the strength.

[0003] Among them, the Chinese patent with application number CN201911318301.8 discloses a recycled concrete strength detection device. In the above patent application, by setting up the feeding mechanism, continuous feeding of the supporting platform can be achieved. In addition, by setting up the supporting platform and the strength detection head, the strength of the recycled concrete block can be detected, thereby realizing a continuous strength detection process and improving the detection efficiency.

[0004] The Chinese patent application number CN202123399960.4 discloses a recycled concrete strength testing device. The above application moves the kit upward so that the limit piece is inserted into the circular hole inside the kit. At this time, the second protective cover is pulled up to block the front of the device. At the same time, when the kit moves upward, the slider moves upward at the same time under the drive of the connecting piece. When it moves to the specified position, the limit pin is inserted into the limit hole A and the limit hole B. At this time, the slider can be limited. At the same time, the first protective cover is also pulled up to block the side of the device, and then the hydraulic top is started to perform pressure detection on the concrete block between the cone head and the pressure cone, thereby avoiding the collapse of concrete during the detection process, causing the fragments to splash out and cause harm to the operator. At the same time, the broken concrete blocks fall into the space formed by the first protective cover, the second protective cover and the side plate, which is convenient for handling the fragments. However, the following problems still exist in actual applications, specifically: 1. During the pressure test of the concrete test block, since the concrete test block is not placed in the center, it will cause uneven force or offset of the force point, resulting in inaccurate test data; 2. After the concrete is pressurized and the concrete test block is broken, the broken blocks or debris cannot be removed in time, which affects the strength of the subsequent concrete test block test; 3. In the process of pressurizing the concrete test block, the critical pressure and the ultimate pressure cannot be tested, and the two data cannot be effectively obtained.

[0005] Therefore, the present invention provides a recycled concrete strength continuous detection device to solve the above problems. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a recycled concrete strength continuous detection device, which effectively solves the problems that the existing concrete test blocks cannot be placed in the center, the fragments generated after the concrete test block test is completed cannot be removed in time, and the street pressure and limit pressure cannot be detected simultaneously.

[0007] The present invention comprises a base frame, the base is fixedly connected with a control cabinet, the base frame is connected with a support frame placed on the left side of the control cabinet, a lifting column is slidably connected to the inside of the support frame, the lifting column is connected to a hydraulic lifting device placed inside the base frame, the hydraulic lifting device is connected to the control cabinet, the upper end of the lifting column is fixedly connected with a detection platform, a pressure plate is placed above the detection platform, the pressure plate and the support frame are slidably connected up and down, the upper end of the pressure plate is fixedly connected with a lifting adjustment screw, the lifting adjustment screw is threadedly connected to a driving threaded sleeve rotatably connected to the upper end of the support frame, and the driving threaded sleeve is externally connected to a driving source; The outer wall of the pressure plate is fixedly connected with four lifting ear plates distributed in a rectangular shape, the lifting ear plate is connected with a lifting plate located above the lifting ear plate through a spring, the lifting plate and the support frame are slidably connected up and down, the lower end of the lifting plate is fixedly connected with an adjusting rod, the adjusting rod is fixedly connected with a hydraulic cylinder, the inside of the hydraulic cylinder is slidably connected with an adjusting piston rod, the adjusting piston rod is fixedly connected with a sliding fastening plate on the side close to the detection platform, and the four hydraulic cylinders are connected to the pressure supply system placed inside the control cabinet; Four rectangularly distributed limiting rings are fixedly connected to the support frame, and the limiting rings are used to limit the sliding position of the lifting plate; The front end of the support frame is fixedly connected with a loading device, and the rear end of the support frame is fixedly connected with a discharging device.

[0008] Preferably, the feeding device comprises a supporting frame fixedly connected to the supporting frame, a feeding frame is arranged inside the supporting frame and is slidably connected to the supporting frame up and down, the lower end of the feeding frame is connected to the supporting frame through a spring, and a plurality of guide rollers distributed at equal intervals are rotatably connected to the feeding frame; A telescopic sleeve is fixedly connected inside the loading rack, a telescopic push rod is slidably connected inside the telescopic sleeve, and the telescopic sleeve is connected to an external hydraulic system; The telescopic sleeve box is fixedly connected with a push plate at one end close to the detection platform.

[0009] Preferably, a magnetic plate is fixedly connected to the lower end surface of the loading rack, and the telescopic sleeve is made of demagnetizing material; A powerful electromagnet is fixedly connected inside the supporting frame and below the loading rack, and the powerful electromagnet is externally connected to a power source.

[0010] Preferably, the push plate is hollow inside, the lower end of the push plate is open, a plurality of cleaning brush rollers are rotatably connected inside the push plate, the cleaning brush rollers are covered with cleaning brushes, the cleaning brush rollers are coaxially fixedly connected with a driving pinion, the driving pinion is connected to the cleaning brush roller through a one-way bearing, a limit rack located above the detection platform is fixedly connected inside the support frame, and the limit rack is meshed with the driving pinion.

[0011] Preferably, a ventilation pipe is fixedly connected to the inside of the push plate, the ventilation pipe is located on the front side of the cleaning brush roller, a plurality of air jet holes facing the direction of the detection platform are opened on the ventilation pipe, and the ventilation pipe is connected to the air supply pump fixedly connected to the inside of the control cabinet through a conduit.

[0012] Preferably, a plurality of lifting circular rails are provided on the detection platform, and a lifting shaft is coaxially connected to the lifting circular rails for vertical sliding, and the upper ends of the lifting shafts are rotatably connected to guide balls.

[0013] Preferably, the sliding fastening plate is rotatably connected to a plurality of sliding balls on one side close to the detection platform.

[0014] Preferably, the left and right side walls of the loading rack are fixedly connected with upper limit bars, the lower end surface of the loading rack is fixedly connected with a lower limit bar, and the inside of the supporting frame is fixedly connected with a limit block that cooperates with the lower limit bar.

[0015] Preferably, the regulating piston rod comprises a primary sleeve, the primary sleeve is connected to a display tube connected to the hydraulic cylinder through a soft conduit, a primary telescopic rod is coaxially slidably connected inside the primary sleeve, and the primary telescopic rod is fixedly connected to the sliding fastening plate; A lifting piston plate is slidably connected inside the display tube, the lifting piston plate and the upper end of the display tube are connected through a spring, and scale lines are provided on the display tube.

[0016] The present invention improves the existing measuring ruler and has the following beneficial effects: 1. The problem of centering and pre-tightening the concrete test block is effectively solved by setting the lifting column, pressure plate, lifting ear plate, adjusting rod, hydraulic cylinder, adjusting piston rod, sliding fastening plate and limiting ring; 2. The support frame, loading rack, guide roller, push plate, strong electromagnet and magnetic plate are set to effectively solve the problem of adaptive lifting and lowering of the loading rack and cleaning of the testing platform after the test is completed; 3. The problem of deep cleaning of the testing platform is effectively solved by setting up cleaning brush rollers, cleaning brushes, driving pinions, limit racks, vent pipes, jet holes and air supply pumps; 4. Through the structures of the primary casing, the primary telescopic rod, the soft guide tube, the display tube and the lifting piston plate, the problem of detecting and displaying the deformation of the concrete test block during the extrusion process of the concrete test block is effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic cross-sectional view of the present invention.

[0019] Figure 3 A three-dimensional diagram of the present invention Figure 2 .

[0020] Figure 4 For the present invention Figure 3 A partial enlarged schematic diagram in the middle.

[0021] Figure 5 It is a schematic diagram of the loading rack and its connecting parts of the present invention.

[0022] Figure 6 It is a schematic diagram of the internal structure of the supporting frame of the present invention.

[0023] Figure 7 It is a schematic diagram of the push plate and its connecting parts of the present invention.

[0024] Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of point B in the middle.

[0025] Fig. 9 This is a schematic diagram of the structure of the regulating piston rod of the present invention.

[0026] Fig.10 It is a schematic diagram of the internal structure of the detection platform of the present invention.

[0027] Reference numerals: 1. Control cabinet, 2. Support frame, 3. Lifting column, 4. Testing platform, 5. Pressure plate, 6. Lifting adjustment screw, 7. Lifting ear plate, 8. Lifting plate, 9. Adjusting rod, 10. Hydraulic cylinder, 11. Adjusting piston rod, 12. Sliding fastening plate, 13. Limiting ring, 14. Support frame, 15. Loading rack, 16. Guide roller, 17. Telescopic sleeve, 18. Telescopic push rod, 19. Pushing plate, 20. Magnetic plate, 21. Powerful electromagnet, 22. Cleaning brush roller, 23. Driving pinion, 24. Limit rack, 25. Ventilation pipe, 26. Jet hole, 27. Lifting circular rail, 28. Lifting shaft, 29. Guide ball, 30. Sliding ball, 31. Upper limit strip, 34. Primary sleeve, 35. Primary telescopic rod, 36. Display tube, 37. Lifting piston plate, 38. Solenoid valve, 39. Scale line, 40. Driving threaded sleeve. DETAILED DESCRIPTION

[0028] The above and other technical contents, features and effects of the present invention are described in detail below with reference to the attached Figures 1 to 10 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0029] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0030] The present invention is a recycled concrete strength continuous detection device, including a base frame, the base frame provides a fixed support foundation for subsequent structures, the base is fixedly connected to a control cabinet 1, a control unit is integrated inside the control cabinet 1, and the control unit is used to control the entire device, the base frame is connected to a support frame 2 placed on the left side of the control cabinet 1, the support frame 2 is connected to a lifting column 3 that slides up and down inside, the lifting column 3 is connected to a hydraulic lifting device placed inside the base frame, the lifting column 3 is driven by the hydraulic lifting device, the hydraulic lifting device is connected to the control cabinet 1, the hydraulic lifting device is controlled by the control unit, and the upper end of the lifting column 3 is fixedly connected to a detection platform 4. When the lifting column 3 is lifted or lowered, the detection platform 4 is driven to be lifted or lowered synchronously. A pressure plate 5 is arranged above the detection platform 4. The pressure plate 5 and the support frame 2 are connected to be slidably connected up and down. A lifting adjustment screw 6 is fixedly connected to the upper end of the pressure plate 5. The lifting adjustment screw 6 is threadedly connected to a driving threaded sleeve 40 rotatably connected to the upper end of the support frame 2. The driving threaded sleeve 40 is connected to an external driving source. The driving threaded sleeve 40 rotates to drive the lifting adjustment screw 6 to slide up and down. In this embodiment, a polygonal hole is opened at the axis of the lifting adjustment screw 6. A polygonal limiting rod matched with the polygonal hole is fixedly connected to the support frame 2. When the lifting adjustment screw 6 is lifted or lowered, the pressure plate 5 is driven to be lifted or lowered synchronously.

[0031] The outer wall of the pressure plate 5 is fixedly connected with four lifting ear plates 7 distributed in a rectangular shape. The lifting ear plate 7 is connected with a lifting plate 8 located above the lifting ear plate 7 through a spring. When the pressure plate 5 is lifted or lowered, the lifting plate 8 is driven to rise or fall synchronously. The lifting plate 8 and the support frame 2 are slidably connected up and down. The lower end of the lifting plate 8 is fixedly connected with an adjusting rod 9. The adjusting rod 9 is fixedly connected with a hydraulic cylinder 10. The inside of the hydraulic cylinder 10 is slidably connected with an adjusting piston rod 11. The adjusting piston rod 11 is fixedly connected with a sliding fastening plate 12 on the side close to the detection platform 4. The four hydraulic cylinders 10 are connected to the pressure supply system placed inside the control cabinet 1. When the lifting plate 8 is lifted or lowered, the hydraulic cylinder 10, the adjusting piston rod 11, and the sliding fastening plate 12 are driven to rise or fall synchronously. When the sliding fastening plate 12 slides down to the lowermost end, the inside of the hydraulic cylinder 10 is pressurized at the same time to realize the synchronous extension and retraction of the adjusting piston rod 11, thereby realizing the centering adjustment of the concrete test block.

[0032] In order to prevent the sliding fastening plate 12 from sliding continuously during the sliding process, causing interference between the sliding fastening plate 12 and the lower structure, and to ensure that the lower side of the concrete test block will not be squeezed, four rectangularly distributed limiting rings 13 are fixedly connected to the support frame 2, and the limiting rings 13 are used to limit the sliding position of the lifting plate 8 to prevent the lifting plate 8 from sliding continuously, causing the position of the sliding fastening plate 12 to be uncertain due to the uncertain volume of the concrete test block, and then causing interference between the sliding fastening plate 12 and the lower components, and even collision problems. At the same time, it is also ensured that the concrete test block is first centered and then continuously pressurized and fixed to avoid the problem of being unable to move after pressurization and fixation. At the same time, when the pressure plate 5 rises, the pressure is released first, and then the sliding fastening plate 12 and other structures are reset.

[0033] The front end of the support frame 2 is fixedly connected to a loading device, through which the concrete test block is transported to the testing platform 4. The rear end of the support frame 2 is fixedly connected to a unloading device, and the concrete test blocks after strength testing are stored inside the unloading device for collection. In this embodiment, the unloading device is a storage box placed at the rear end of the testing platform 4 and connected to the support frame 2, and the collection of the concrete test blocks after the test is achieved through the storage box.

[0034] During the specific implementation of this embodiment, in the initial state, the pressure plate 5 and the lifting plate 8 are both located at the top, and then the concrete test block is placed above the detection platform 4 through the feeding device, and then the driving source of the driving threaded sleeve 40 is started, and the driving threaded sleeve 40 rotates to drive the lifting adjustment screw 6 to slide downward, and the lifting adjustment screw 6 drives the pressure plate 5 to slide downward synchronously, and the pressure plate 5 drives the lifting plate 8 to slide. Before the pressure plate 5 contacts the concrete test block, the lifting plate 8 contacts the limit ring 13, and then pressurizes the inside of the hydraulic cylinder 10, and the concrete test block is centered by the sliding fastening plate 12. After the processing, the pressure plate 5 pressurizes and fixes the concrete test block, and then the hydraulic lifting device of the lifting column 3 is started to increase the pressure of the detection platform 4, pressurize the concrete test block, and pressurize it until the concrete test block breaks, and record the pressure value at this time to complete the strength test of the concrete test block.

[0035] In order to realize the auxiliary loading of concrete test blocks, reduce the pushing pressure and the labor intensity of the operator, the present embodiment provides a structure that can assist in loading and clean up the broken blocks and debris on the detection platform 4. Specifically, the loading device includes a support frame 14 fixedly connected to the support frame 2, and a loading rack 15 is arranged inside the support frame 14 and is slidably connected to the support frame 14 up and down. The lower end of the loading rack 15 is connected to the support frame 14 through a spring, and the loading rack 15 can slide up and down inside the support frame 14. Before the concrete test block is prevented, the loading rack 15 is located at the uppermost end. After placing the concrete test block, the loading rack 15 slides down to facilitate the concrete test block to enter the detection platform 4. The loading rack 15 is rotatably connected to a plurality of equally spaced guide rollers 16, and the concrete test block is guided by the guide rollers 16, so that the concrete test block can be conveniently pushed onto the detection platform 4. At the same time, the guide rollers 16 in this embodiment are connected by a chain transmission mechanism to achieve synchronous rotation of the guide rollers 16, thereby realizing the transportation of the concrete test block. One of the guide rollers 16 is externally connected to a driving source to drive the guide rollers 16.

[0036] In order to realize the cleaning of the waste on the detection platform 4, the loading rack 15 is fixedly connected with a telescopic sleeve 17 inside, and the telescopic sleeve 17 is connected with a telescopic push rod 18 in a forward and backward sliding manner inside. The telescopic sleeve 17 and the telescopic push rod 18 are piston-connected, and the telescopic sleeve 17 is connected to an external hydraulic system, and the telescopic push rod 18 is retracted and extended by the hydraulic system. The telescopic push rod 18 is fixedly connected with a push plate 19 at one end close to the detection platform 4. When the loading rack 15 is in an unloaded state, the loading rack 15 is located at the uppermost end, and the lower end surface of the push plate 19 is flush with the upper end surface of the detection platform 4. During the sliding process of the telescopic push rod 18, the push plate 19 is driven to slide synchronously, thereby realizing the cleaning of the debris on the upper end of the detection platform 4 by the push plate 19.

[0037] The different volumes of different concrete test blocks will lead to different heights of the loading rack 15, which will further affect the stability of loading. Therefore, a structure is provided to ensure that the height of the loading rack 15 is consistent each time it is lifted or lowered. Specifically, a magnetic plate 20 is fixedly connected to the lower end surface of the loading rack 15, and the telescopic sleeve 17 is a demagnetizing material. The magnetic field is weakened by the telescopic sleeve 17 to avoid affecting the components at the upper end of the loading rack 15. A strong electromagnet 21 is fixedly connected to the interior of the support frame 14 below the loading rack 15. The strong electromagnet 21 is connected to an external power supply. By energizing the strong electromagnet 21, the magnetic plate 20 is adsorbed, so that the loading rack 15 slides down to the lowest end, avoiding the problem that the loading rack 15 does not slide down completely and cannot be flush with the detection platform 4 due to the light weight of the concrete test block.

[0038] In order to avoid residual debris on the upper end of the detection platform 4 and ensure effective cleaning of the detection platform 4, the push plate 19 is hollow inside, and the lower end of the push plate 19 is open. The push plate 19 is internally rotatably connected to a plurality of cleaning brush rollers 22, and the cleaning brush rollers 22 are covered with cleaning brushes. The rotation of the cleaning brush rollers 22 drives the cleaning brushes to rotate, and the surface of the cleaning platform is cleaned by the cleaning brushes. The cleaning brush rollers 22 are coaxially fixedly connected to a driving pinion 23, and the driving pinion 23 is connected to the cleaning platform 10 by a plurality of cleaning brush rollers 22. It is connected to the cleaning brush roller 22 through a one-way bearing to ensure that the cleaning brush roller 22 is in a rotating state when sliding toward the rear side and is in a stationary state when sliding toward the front side. The support frame 2 is fixedly connected to a limit rack 24 located above the detection platform 4. The limit rack 24 is meshed with the driving pinion 23. During the sliding process of the push plate 19, the driving pinion 23 rotates under the limiting action of the limit rack 24, and then the cleaning brush roller 22 is driven to rotate through the rotation of the driving pinion 23.

[0039] In order to blow away fine dust and ensure the cleanliness of the testing environment, a ventilation pipe 25 is fixedly connected to the inside of the push plate 19. The ventilation pipe 25 is located on the front side of the cleaning brush roller 22. The ventilation pipe 25 is provided with a plurality of jet holes 26 facing the direction of the testing platform 4. The ventilation pipe 25 is connected to an air supply pump fixedly connected to the inside of the control cabinet 1 through a conduit. The air supply to the ventilation pipe 25 is achieved through the air supply pump, and at the same time, air is sprayed toward the testing platform 4 through the jet holes 26 to clean the testing platform 4, and finishing work is performed after the brush is cleaned.

[0040] In order to reduce the sliding resistance during the centering adjustment of the concrete test block, a plurality of lifting circular rails 27 are provided on the detection platform 4. The lifting circular rails 27 are coaxially connected with a lifting shaft 28 for sliding up and down. The upper ends of the lifting shafts 28 are rotatably connected with guide balls 29. The rotation of the guide balls 29 reduces the sliding resistance, facilitates the adjustment of the concrete test block, and also facilitates the transportation of the concrete test block from the loading rack 15 to the top of the detection platform 4.

[0041] The sliding fastening plate 12 is rotatably connected to a plurality of sliding balls 30 on one side close to the detection platform 4, so as to facilitate the movement of the concrete test block during the process of adjusting the position of the concrete test block.

[0042] In order to control the lifting stroke of the loading rack 15 and ensure that it is lifted to a fixed position each time, the left and right side walls of the loading rack 15 are fixedly connected with upper limit bars 31. The cooperation between the upper limit bars 31 and the supporting frame 14 is used to limit the downward sliding height of the loading rack 15. The lower end surface of the loading rack 15 is fixedly connected with a lower limit bar. The supporting frame 14 is internally fixedly connected with a limit block that cooperates with the lower limit bar. The cooperation between the lower limit bar and the limit block is used to limit the rising height of the loading rack 15.

[0043] In order to detect the critical strength and ultimate strength of the concrete test block, as well as the different strengths and the changing state of the stress crushing state, the regulating piston rod 11 includes a primary sleeve 34, which is connected to a display tube 36 connected to the hydraulic cylinder 10 through a soft conduit, and a primary telescopic rod 35 is coaxially slidably connected inside the primary sleeve 34, and the primary telescopic rod 35 is fixedly connected to the sliding fastening plate 12, and a solenoid valve 38 is connected to the connection between the primary sleeve 34 and the soft conduit. When adjusting the position of the concrete test block, the solenoid valve 38 is closed to fix the length of the regulating piston rod 11, and when performing the strength detection process, the solenoid valve 38 is opened; The display tube 36 is slidably connected with a lifting piston plate 37, and the lifting piston plate 37 and the upper end of the display tube 36 are connected by a spring. The display tube 36 is provided with a scale line 39. During the deformation of the concrete test block, the primary telescopic rod 35 moves, thereby driving the position of the lifting piston plate 37 to change. The deformation of the concrete test block is determined by the change in the position of the lifting piston rod inside the display tube 36, and then the relationship between the deformation of the concrete test block and the compressive strength is determined.

[0044] When the present invention is in use, the pressure plate 5 and the lifting plate 8 are both located at the top, and then the concrete test block is placed above the detection platform 4 through the loading device, and then the driving source of the driving threaded sleeve 40 is started, and the driving threaded sleeve 40 rotates to drive the lifting adjustment screw 6 to slide downward, and the lifting adjustment screw 6 drives the pressure plate 5 to slide downward synchronously, and the pressure plate 5 drives the lifting plate 8 to slide. Before the pressure plate 5 contacts the concrete test block, the lifting plate 8 contacts the limit ring 13, and then pressurizes the inside of the hydraulic cylinder 10. The concrete test block is centered and positioned by the sliding fastening plate 12. After the positioning, the concrete test block is pressurized and fixed by the pressurizing plate 5. Then, the hydraulic lifting device of the lifting column 3 is started to increase the pressure of the detection platform 4, and the concrete test block is pressurized until the concrete test block breaks. The pressure value at this time is recorded to complete the strength test of the concrete test block. After the test is completed, the concrete test block is pushed out of the detection platform 4 by the pushing plate 19, and the cleaning platform is cleaned by the cleaning brush roller 22 and the air jet hole 26.

[0045] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A continuous detection device for the strength of recycled concrete, comprising a base frame, characterized in that: The base is fixedly connected to a control cabinet (1), the base frame is connected to a support frame (2) placed on the left side of the control cabinet (1), a lifting column (3) is slidably connected to the inside of the support frame (2), the lifting column (3) is connected to a hydraulic lifting device placed inside the base frame, the hydraulic lifting device is connected to the control cabinet (1), the upper end of the lifting column (3) is fixedly connected to a detection platform (4), a pressure plate (5) is placed above the detection platform (4), the pressure plate (5) is slidably connected to the support frame (2) up and down, the upper end of the pressure plate (5) is fixedly connected to a lifting adjustment screw (6), the lifting adjustment screw (6) is threadedly connected to a driving threaded sleeve (40) rotatably connected to the upper end of the support frame (2), and the driving threaded sleeve (40) is externally connected to a driving source; The outer wall of the pressure plate (5) is fixedly connected with four lifting ear plates (7) distributed in a rectangular shape, the lifting ear plate (7) is connected with a lifting plate (8) located above the lifting ear plate (7) through a spring, the lifting plate (8) and the support frame (2) are slidably connected up and down, the lower end of the lifting plate (8) is fixedly connected with an adjustment rod (9), the adjustment rod (9) is fixedly connected with a hydraulic cylinder (10), the inside of the hydraulic cylinder (10) is slidably connected with an adjustment piston rod (11), the side of the adjustment piston rod (11) close to the detection platform (4) is fixedly connected with a sliding fastening plate (12), and the four hydraulic cylinders (10) are connected to the pressure supply system placed inside the control cabinet (1); Four rectangularly distributed limiting rings (13) are fixedly connected to the support frame (2), and the sliding position of the lifting plate (8) is limited by the limiting rings (13); The front end of the support frame (2) is fixedly connected to a loading device, and the rear end of the support frame (2) is fixedly connected to a unloading device.

2. The recycled concrete strength continuous detection device according to claim 1, characterized in that: The feeding device comprises a supporting frame (14) fixedly connected to the supporting frame (2); a feeding frame (15) is disposed inside the supporting frame (14) and is slidably connected to the supporting frame (14) up and down; the lower end of the feeding frame (15) is connected to the supporting frame (14) via a spring; and a plurality of guide rollers (16) rotatably connected to the feeding frame (15) and distributed at equal intervals; The loading rack (15) is fixedly connected to a telescopic sleeve (17) inside, the telescopic sleeve (17) is slidably connected to a telescopic push rod (18) inside, and the telescopic sleeve (17) is connected to an external hydraulic system; The telescopic sleeve (17) is fixedly connected to a push plate (19) at one end close to the detection platform (4).

3. The recycled concrete strength continuous detection device according to claim 2, characterized in that: The lower end surface of the loading rack (15) is fixedly connected with a magnetic plate (20), and the telescopic sleeve (17) is made of demagnetizing material; A powerful electromagnet (21) is fixedly connected to the interior of the support frame (14) below the loading rack (15), and the powerful electromagnet (21) is externally connected to a power source.

4. The recycled concrete strength continuous detection device according to claim 3, characterized in that: The push plate (19) is hollow inside, and the lower end of the push plate (19) is open. The push plate (19) is rotatably connected to a plurality of cleaning brush rollers (22). The cleaning brush rollers (22) are covered with cleaning brushes. The cleaning brush rollers (22) are coaxially fixedly connected to a driving pinion (23). The driving pinion (23) is connected to the cleaning brush roller (22) via a one-way bearing. The support frame (2) is fixedly connected to a limit rack (24) located above the detection platform (4), and the limit rack (24) is meshed with the driving pinion (23).

5. The recycled concrete strength continuous detection device according to claim 4, characterized in that: The push plate (19) is internally fixedly connected with a vent pipe (25), the vent pipe (25) is located in front of the cleaning brush roller (22), the vent pipe (25) is provided with a plurality of air injection holes (26) facing the detection platform (4), and the vent pipe (25) is connected to an air supply pump fixedly connected to the inside of the control cabinet (1) via a conduit.

6. The recycled concrete strength continuous detection device according to claim 1, characterized in that: The detection platform (4) is provided with a plurality of lifting circular rails (27), the lifting circular rails (27) are coaxially connected to lifting shafts (28) for vertical sliding movement, and the upper ends of the lifting shafts (28) are rotatably connected to guide balls (29).

7. The recycled concrete strength continuous detection device according to claim 1, characterized in that: The sliding fastening plate (12) is rotatably connected to a plurality of sliding rolling balls (30) on one side close to the detection platform (4).

8. The recycled concrete strength continuous detection device according to claim 4, characterized in that: The left and right side walls of the loading rack (15) are fixedly connected with upper limit bars (31), the lower end surface of the loading rack (15) is fixedly connected with a lower limit bar, and the support frame (14) is internally fixedly connected with a limit block that cooperates with the lower limit bar.

9. The recycled concrete strength continuous detection device according to claim 4, characterized in that: The regulating piston rod (11) comprises a primary sleeve (34), the primary sleeve (34) being connected to a display tube (36) connected to the hydraulic cylinder (10) via a soft conduit, a primary telescopic rod (35) being coaxially slidably connected inside the primary sleeve (34), and the primary telescopic rod (35) being fixedly connected to the sliding fastening plate (12); A lifting piston plate (37) is slidably connected inside the display tube (36); the lifting piston plate (37) and the upper end of the display tube (36) are connected via a spring; and a scale line (39) is provided on the display tube (36).

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