Device and method for detecting freeze-thaw resistance of recycled concrete

Abstract

The invention relates to the technical field of recycled concrete, and discloses a recycled concrete freeze-thaw resistance detection device and method.The recycled concrete freeze-thaw resistance detection device comprises a bottom plate, the bottom plate is provided with a freeze-thaw environment simulation mechanism, the freeze-thaw environment simulation mechanism comprises a cylinder fixedly connected to the upper portion of the bottom plate, and a cavity is formed in the cylinder; a screw rod is rotatably connected between the end walls of the cavity, the screw rod is in power connection with a simulation motor, and the simulation motor is fixedly mounted in the cylinder, so that the freezing and thawing environment can be simulated, detection is facilitated, during simulation, simulation of various environments can be realized, impact of a concrete column in different environments can be simulated, and the simulation efficiency is improved. Deformation and internal damage conditions of the concrete after being impacted in different environments can be conveniently detected; according to the concrete column clamping and feeding device, automatic clamping and feeding of concrete columns can be achieved, manual feeding is not needed, the detection efficiency is improved, time is shortened, and labor is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of recycled concrete, and specifically relates to a device and method for detecting freeze-thaw resistance of recycled concrete. Background Art

[0002] Recycled concrete refers to the new concrete made by crushing, cleaning, grading, mixing abandoned concrete blocks 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. Recycled concrete can be made into the following types of concrete according to the combination of aggregates: all aggregates are recycled aggregates; coarse aggregates are recycled aggregates and fine aggregates are natural sand; coarse aggregates are natural crushed stone or pebbles and fine aggregates are recycled aggregates; recycled aggregates replace part of coarse aggregates or fine aggregates.

[0003] In the process of recycled concrete production, it is necessary to test the freeze-thaw resistance of recycled concrete. At present, the test cannot be carried out for simulated maintenance. It is necessary to carry out the test in the corresponding time period after the concrete production is completed and put into actual application. The test efficiency is low and the time is relatively long. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a device and method for detecting the freeze-thaw resistance of recycled concrete, which effectively solves the problems mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for detecting the freeze-thaw resistance of recycled concrete, comprising a base plate, a freeze-thaw environment simulation mechanism being provided on the base plate, the freeze-thaw environment simulation mechanism comprising a cylinder fixedly connected to the upper part of the base plate, a cavity being provided in the cylinder, a screw being rotatably connected between the end walls of the cavity, the screw being dynamically connected to a simulation motor, the simulation motor being fixedly installed in the cylinder, a simulation cylinder being threadedly connected to the outer surface of the screw, and the simulation cylinder being slidably connected to the end wall of the cavity, a hot air cavity being provided in the simulation cylinder, a hot air nozzle being evenly and fixedly connected to the end wall of the hot air cavity, and the outlet position of the hot air nozzle extending to the simulation cylinder On the inner end wall, an impact cavity is provided in the simulation cylinder at the lower side of the hot air cavity, a reciprocating electric push rod is fixedly connected to the end wall of the impact cavity, the moving end of the reciprocating electric push rod extends to the inner end wall of the simulation cylinder, and the moving end of the reciprocating electric push rod is fixedly connected to an impact head, a water storage cavity is provided in the simulation cylinder at the lower side of the impact cavity, water spray nozzles are evenly fixedly connected to the end wall of the water storage cavity, and the outlet position of the water spray nozzle extends to the inner end wall of the simulation cylinder, a cold air cavity is provided in the simulation cylinder at the lower side of the water storage cavity, cold air nozzles are evenly fixedly connected to the end wall of the cold air cavity, and the outlet position of the cold air nozzle extends to the inner end wall of the simulation cylinder.

[0006] Preferably, the simulation cylinder is connected to a detection mechanism, which includes an annular groove provided on the inner end wall of the simulation cylinder between the impact chamber and the water storage chamber, a detection gear chamber provided on the end wall of the annular groove, a detection gear shaft rotatably connected between the end walls of the detection gear chamber, the detection gear shaft is fixedly connected to a power output shaft of a detection motor fixedly installed in the simulation cylinder, a detection gear meshing with an annular rack is fixedly installed on the outer surface of the detection gear shaft, the annular rack is rotatably installed between the end walls of the annular groove, an ultrasonic probe is symmetrically fixedly connected to the inner surface of the annular rack, and a visual probe is symmetrically fixedly connected to the inner surface of the annular rack.

[0007] Preferably, an auxiliary mechanism is provided on the base plate, and the auxiliary mechanism includes a hot air pump fixedly installed on the upper part of the base plate, the hot air pump is connected to one end of a hot air pipe, and the other end of the hot air pipe is communicated with the hot air cavity, a refrigeration pump is fixedly connected to the upper part of the base plate, the refrigeration pump is connected to one end of a cold air pipe, and the other end of the cold air pipe is communicated with the cold air cavity, a water supply pump is fixedly connected to the base plate, the water supply pump is connected to one end of a water delivery pipe, and the other end of the water delivery pipe is connected to a water supply device, the water supply pump is connected to one end of a delivery pipe, and the other end of the delivery pipe is communicated with the water storage cavity.

[0008] Preferably, the front portion of the base plate is connected with a slide plate through a lifting mechanism, the slide plate is connected with a clamping mechanism, and the clamping mechanism comprises an electric push rod fixedly installed on the lower side of the front portion of the slide plate, the lower end of the electric push rod is fixedly connected with a disc, and the lower portion of the disc is evenly and equidistantly provided with clamping slots, and the clamping screw is rotatably connected between the end walls of the clamping slot, and the clamping screw extends into a gear cavity provided in the electric push rod, and the end wall of the gear cavity is rotatably connected to a driving shaft, and the driving shaft is connected to a power output shaft of a clamping motor fixedly installed in the electric push rod, and the lower end of the driving shaft is fixedly connected with a driving gear, and the driving gear is meshed with a driven gear, and the driven gear is fixedly installed on the end of the clamping screw in the gear cavity, and the outer surface of the clamping screw is threadedly connected with a clamping nut plate, and the clamping nut plate is slidably installed between the end walls of the clamping slot, and the inner surface of the clamping nut plate is fixedly connected with a clamping block, and a regenerated concrete column is clamped between the clamping blocks.

[0009] Preferably, the lifting mechanism includes a fixed frame fixedly mounted on the front part of the base plate, a lifting slot is provided at the front part of the fixed frame, a lifting screw connected to a power output shaft of a lifting motor fixedly mounted on the fixed frame is rotatably connected between the end walls of the lifting slot, a lifting nut block is threadedly connected to the outer surface of the lifting screw, the lifting nut block is slidably connected between the end walls of the lifting slot, a lifting frame is fixedly connected to the lifting nut block, a stabilizing plate is symmetrically fixedly connected to the lifting frame, and a rotating mechanism is provided on the stabilizing plate.

[0010] Preferably, the rotating mechanism includes a bevel gear cavity provided in the lifting frame, a bevel gear shaft connected to a power output shaft of a steering motor fixedly installed in the lifting frame is rotatably connected to the end wall of the bevel gear cavity, a driving bevel gear is fixedly connected to the end of the bevel gear shaft, the driving bevel gear is meshed with the driven bevel gear, the driven bevel gear is fixedly installed on the lower end of the steering shaft, the steering shaft passes through and is rotatably installed on the upper end wall of the bevel gear cavity, a rotating frame is fixedly connected to the upper end of the steering shaft, a stabilizing ring is connected between the rotating frame and the lifting frame, a sliding cavity is provided on the rotating frame, an electric lead screw is rotatably connected to the end wall of the sliding cavity, and the slide plate is threadedly connected to the outer surface of the electric lead screw.

[0011] Preferably, the base plate is connected with a stabilizing mechanism, and the stabilizing mechanism includes a lower support block symmetrically fixedly connected to the base plate, the lower support block is rotatably connected with a lower connecting shaft, one end of a supporting connecting rod is fixedly connected to the lower connecting shaft, the other end of the supporting connecting rod is fixedly connected with an upper connecting shaft, the upper connecting shaft is rotatably connected to an upper support block, the upper support block is fixedly mounted on the lower part of a support ring, and the support ring is fixedly mounted on the cylinder.

[0012] Preferably, a closing mechanism is provided on the bottom plate, and the closing mechanism includes a through hole machined through the bottom plate, a closed cavity is machined on the end wall of the through hole, a closed electric push rod is symmetrically rotatably connected to the end wall of the closed cavity, a closing plate is threadedly connected to the outer surface of the closed electric push rod, a closing pad is provided on the end wall of the closing plates close to each other, a closing groove is fixedly connected to the end wall of the closing pad, an electric telescopic shaft is rotatably connected to the upper part of the cylinder, a cover plate is fixedly connected to the upper end of the electric telescopic shaft, an upper closed ring is fixedly connected to the lower part of the cover plate, and an upper clamping pad is fixedly connected to the inner surface of the upper closed ring.

[0013] Preferably, the base plate is connected to a control mechanism, the control mechanism includes an operating table fixedly connected to the base plate, the operating table is fixedly connected to a display panel, a plurality of buttons are arranged on the operating table, a control processor is arranged in the operating table, the control processor is connected to the button signals, the control processor is connected to the display panel signals, a signal line jack is arranged on the operating table, and the signal line jack is connected to the control processor signals.

[0014] The present invention provides a method for detecting freeze-thaw resistance of recycled concrete, based on the above-mentioned freeze-thaw resistance detection device for recycled concrete, the steps include: Step 1: Control the movement of the mechanism to control the entire device; Step 2: The clamping mechanism moves to clamp the recycled concrete column; Step 2: After clamping, the rotating mechanism moves, thereby driving the recycled concrete column to rotate to the upper side of the cylinder; Step 3: After the recycled concrete column rotates to the upper side of the cylinder, the lifting mechanism moves, thereby driving the recycled concrete column to enter the cylinder; Step 4: Entering into the cylinder, the closing mechanism moves, thereby closing the cylinder, thereby clamping the recycled concrete column support; Step 5: After the support is clamped, the freeze-thaw environment simulation mechanism moves, thereby simulating the freeze-thaw environment, which is convenient for testing the recycled concrete column; Step 6: When simulating the freeze-thaw environment, the auxiliary mechanism moves to assist in simulating the environment; Step 7: After the simulation is completed, the detection mechanism moves to detect the damage caused to the recycled concrete column after the simulation environment.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a device for testing the freeze-thaw resistance of recycled concrete, which can simulate the freeze-thaw environment to facilitate testing. In addition, during the simulation, it can simulate a variety of environments, such as simulating the impact of concrete columns in different environments, so as to facilitate the detection of the deformation and internal damage of concrete after being impacted in different environments.

[0016] 2. The present invention provides a device for testing the freeze-thaw resistance of recycled concrete, which can realize automatic clamping and supply of concrete columns without manual feeding, thereby improving the efficiency of testing, shortening the time and saving labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0018] In the attached picture: Figure 1 It is a schematic diagram of the first direction structure of a device for detecting freeze-thaw resistance of recycled concrete in the present invention; Figure 2 It is a schematic diagram of the structure in the second direction of a device for detecting freeze-thaw resistance of recycled concrete in the present invention; Figure 3 It is a schematic structural diagram of the third direction of a device for detecting freeze-thaw resistance of recycled concrete in the present invention; Figure 4 It is a schematic diagram of the structure in the fourth direction of a device for detecting freeze-thaw resistance of recycled concrete in the present invention; Figure 5 It is a partial first direction structural schematic diagram of a device for detecting freeze-thaw resistance of recycled concrete in the present invention; Figure 6 It is a partial second direction structural schematic diagram of a device for detecting freeze-thaw resistance of recycled concrete in the present invention; Figure 7 It is a schematic diagram of the fifth direction structure of a device for detecting freeze-thaw resistance of recycled concrete in the present invention; Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure at AA in the middle; Fig. 9 for Figure 8 Schematic diagram of the cross-sectional structure at the middle BB; Fig.10 for Figure 8 Schematic diagram of the cross-sectional structure at CC in the middle.

[0019] In the figure: 1-bottom plate, 2-water supply pump, 3-support connecting rod, 4-upper support block, 5-support ring, 6-cylinder, 7-cover plate, 8-fixed frame, 9-lifting frame, 10-rotating frame, 11-slide plate, 12-electric push rod, 13-disc, 14-clamping nut plate, 15-clamping block, 16-recycled concrete column, 17-stabilizing plate, 18-lifting motor, 19-support leg, 20-hot air pump, 21-through hole, 22-operating table , 23- water pipe, 24- delivery pipe, 25- hot air pipe, 26- display panel, 27- button, 28- lower connecting shaft, 29- upper connecting shaft, 30- electric telescopic shaft, 31- refrigeration pump, 32- cold air pipe, 33- signal line jack, 34- closing plate, 35- simulation cylinder, 36- screw rod, 37- hot air nozzle, 38- impact head, 39- water nozzle, 40- cold air nozzle, 41- electric screw rod , 42-bevel gear cavity, 43-driven bevel gear, 44-steering shaft, 45-stabilizing ring, 46-driving bevel gear, 47-bevel gear shaft, 48-steering motor, 49-lifting screw, 50-lifting slide, 51-upper side closed ring, 52-upper side clamping pad, 53-cavity, 54-reciprocating electric push rod, 55-hot air cavity, 56-impact cavity, 57-water storage cavity, 58-cold air cavity, 59-enclosed electric push rod, 60-enclosed cavity, 61-closed groove, 62-closed pad, 63-lifting nut block, 64-clamping screw, 65-clamping slide groove, 66-clamping motor, 67-driving shaft, 68-driving gear, 69-driven gear, 70-annular groove, 71-annular rack, 72-ultrasonic probe, 73-visual probe, 74-detection gear cavity, 75-detection gear, 76-detection gear shaft, 77-gear cavity, 78-sliding cavity, 79-lower support block. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] like Figure 1-10As shown, the present invention provides a device for detecting the freeze-thaw resistance of recycled concrete, including a base plate 1, on which a freeze-thaw environment simulation mechanism is provided, and the freeze-thaw environment simulation mechanism is used to simulate the freeze-thaw environment simulation during detection, and the freeze-thaw environment simulation mechanism includes a cylinder 6 fixedly connected to the upper part of the base plate 1, and a cavity 53 is provided in the cylinder 6, and a screw rod 36 is rotatably connected between the end walls of the cavity 53, and the screw rod 36 is connected to the simulation motor power, and the simulation motor is fixedly installed in the cylinder 6, and a simulation cylinder 35 is threadedly connected to the outer surface of the screw rod 36, and the simulation cylinder 35 is slidably connected to the end wall of the cavity 53, and a hot air cavity 55 is provided in the simulation cylinder 35, and a hot air nozzle 37 is evenly and fixedly connected to the end wall of the hot air cavity 55, and the outlet position of the hot air nozzle 37 extends to the simulation cylinder On the inner end wall of the body 35, an impact chamber 56 is provided in the simulation cylinder 35 at the lower side of the hot air chamber 55, a reciprocating electric push rod 54 is fixedly connected to the end wall of the impact chamber 56, the moving end of the reciprocating electric push rod 54 extends to the inner end wall of the simulation cylinder 35, and the moving end of the reciprocating electric push rod 54 is fixedly connected to the impact head 38, a water storage chamber 57 is provided in the simulation cylinder 35 at the lower side of the impact chamber 56, a water spray nozzle 39 is evenly fixedly connected to the end wall of the water storage chamber 57, and the outlet position of the water spray nozzle 39 extends to the inner end wall of the simulation cylinder 35, a cold air chamber 58 is provided in the simulation cylinder 35 at the lower side of the water storage chamber 57, a cold air nozzle 40 is evenly fixedly connected to the end wall of the cold air chamber 58, and the outlet position of the cold air nozzle 40 extends to the inner end wall of the simulation cylinder 35; When working, the simulation motor is started to drive the screw rod 36 to rotate, and the screw rod 36 is threadedly connected to the simulation cylinder 35, thereby driving the simulation cylinder 35 to move up and down. When simulating a hot melting environment, the hot air nozzle 37 is turned on, so that the hot air in the hot air cavity 55 is sprayed onto the surface of the regenerated concrete column 16 through the hot air nozzle 37, thereby simulating the hot melting environment of the regenerated concrete column 16. When simulating a freezing environment, the cold air nozzle 40 is turned on to spray the cold air in the cold air cavity 58. The outer surface of the recycled concrete column 16 is simulated to simulate a freezing environment, and the water spray nozzle 39 is turned on to spray the water in the water storage chamber 57 onto the surface of the recycled concrete column 16. Through the action of the cold air in the cold air chamber 58, ice is formed on the surface of the recycled concrete column 16 to simulate a freezing environment. After various environmental simulations, the reciprocating electric push rod 54 is reciprocated to drive the impact head 38 to reciprocate and impact the outer surface of the recycled concrete column 16, so as to facilitate the detection of damage in different environments.

[0022] Advantageously, the simulation cylinder 35 is connected with a detection mechanism, and the detection mechanism is used to cause damage to the regenerated concrete column 16 after simulating the environment. The detection mechanism includes an annular groove 70 provided on the inner end wall of the simulation cylinder 35 between the impact cavity 56 and the water storage cavity 57, and a detection gear cavity 74 is provided on the end wall of the annular groove 70. A detection gear shaft 76 is rotatably connected between the end walls of the detection gear cavity 74. The detection gear shaft 76 is fixedly connected to the power output shaft of the detection motor fixedly installed in the simulation cylinder 35. A detection gear 75 meshing with an annular rack 71 is fixedly installed on the outer surface of the detection gear shaft 76. The annular rack 71 is rotatably installed between the end walls of the annular groove 70. An ultrasonic probe 72 is symmetrically fixedly connected to the inner surface of the annular rack 71, and a visual probe 73 is symmetrically fixedly connected to the inner surface of the annular rack 71. During operation, the detection motor is started to drive the detection gear shaft 76 to rotate, thereby driving the detection gear 75 to rotate, and the detection gear 75 is engaged with the annular rack 71, thereby driving the annular rack 71 to rotate, thereby driving the ultrasonic probe 72 and the visual probe 73 to rotate, the ultrasonic probe 72 detects the damage inside the recycled concrete column 16, and the visual probe 73 detects the deformation of the surface of the recycled concrete column 16.

[0023] Advantageously, an auxiliary mechanism is provided on the bottom plate 1, and the auxiliary mechanism is used to assist in environmental simulation. The auxiliary mechanism includes a hot air pump 20 fixedly installed on the upper part of the bottom plate 1, and the hot air pump 20 is connected to one end of a hot air pipe 25, and the other end of the hot air pipe 25 is communicated with the hot air cavity 55. A refrigeration pump 31 is fixedly connected to the upper part of the bottom plate 1, and the refrigeration pump 31 is connected to one end of a cold air pipe 32, and the other end of the cold air pipe 32 is communicated with the cold air cavity 58. A water supply pump 2 is fixedly connected to the bottom plate 1, and the water supply pump 2 is connected to one end of a water delivery pipe 23, and the other end of the water delivery pipe 23 is connected to a water supply device. The water supply pump 2 is connected to one end of a delivery pipe 24, and the other end of the delivery pipe 24 is communicated with the water storage cavity 57. During operation, the hot air pump 20 is started to transport hot air, and the hot air enters the hot air cavity 55 through the hot air pipe 25. The refrigeration pump 31 is started to transport cold air, and the cold air enters the cold air cavity 58 through the cold air pipe 32. The water supply pump 2 is started to pump water, and the water in the water supply device enters the delivery pipe 24 through the water delivery pipe 23 and the delivery pipe 24, and enters the water storage cavity 57.

[0024] Advantageously, the front of the base plate 1 is connected to a slide plate 11 through a lifting mechanism, and the slide plate 11 is connected to a clamping mechanism, and the clamping mechanism is used to clamp the recycled concrete column 16, and the clamping mechanism includes an electric push rod 12 fixedly installed on the lower side of the front of the slide plate 11, and the lower end of the electric push rod 12 is fixedly connected to a disc 13, and the lower part of the disc 13 is evenly and evenly spaced with clamping grooves 65, and the clamping grooves 65 are rotatably connected between the end walls. The clamping screw 64 extends into a gear cavity 77 provided in the electric push rod 12, and the gear cavity 77 is rotatably connected to the end wall. A drive shaft 67 The driving shaft 67 is connected to the power output shaft of the clamping motor 66 fixedly installed in the electric push rod 12, and the lower end of the driving shaft 67 is fixedly connected with a driving gear 68, and the driving gear 68 is meshed with a driven gear 69, and the driven gear 69 is fixedly installed at the end of the clamping screw 64 in the gear cavity 77, and the outer surface of the clamping screw 64 is threadedly connected with a clamping nut plate 14, and the clamping nut plate 14 is slidably installed between the end walls of the clamping slide 65, and the inner surface of the clamping nut plate 14 is fixedly connected with a clamping block 15, and the clamping blocks 15 clamp a recycled concrete column 16 between them; During operation, the electric push rod 12 moves downward, thereby driving the disc 13 to move downward, starting the clamping motor 66, thereby driving the drive shaft 67 to rotate, thereby driving the driving gear 68 to rotate, and the driving gear 68 is meshed with the driven gear 69, thereby driving the clamping screw 64 to rotate, and the clamping screw 64 is threadedly connected to the clamping nut plate 14, thereby driving the clamping nut plate 14 to move, thereby driving the clamping block 15 to move to clamp the recycled concrete column 16.

[0025] Advantageously, the lifting mechanism is used to drive the recycled concrete column 16 to lift, and the lifting mechanism includes a fixed frame 8 fixedly mounted on the front of the base plate 1, and a lifting chute 50 is provided at the front of the fixed frame 8, and a lifting screw 49 connected to the power output shaft of the lifting motor 18 fixedly mounted on the fixed frame 8 is rotatably connected between the end walls of the lifting chute 50, and a lifting nut block 63 is threadedly connected to the outer surface of the lifting screw 49, and the lifting nut block 63 is slidably connected between the end walls of the lifting chute 50, and a lifting frame 9 is fixedly connected to the lifting nut block 63, and a stabilizing plate 17 is symmetrically fixedly connected to the lifting frame 9, and a rotating mechanism is provided on the stabilizing plate 17; During operation, the lifting motor 18 is started to drive the lifting screw 49 to rotate, and the lifting screw 49 is threadedly connected to the lifting nut block 63, thereby driving the lifting nut block 63 to move up and down, thereby driving the lifting frame 9 to move up and down, and the stabilizing plate 17 increases the stability of the movement of the lifting frame 9.

[0026] Advantageously, the rotating mechanism is used to drive the recycled concrete column 16 to rotate to the upper side of the cylinder 6, and the rotating mechanism includes a bevel gear cavity 42 provided in the lifting frame 9, and a bevel gear shaft 47 connected to the power output shaft of a steering motor 48 fixedly installed in the lifting frame 9 is rotatably connected on the end wall of the bevel gear cavity 42, and a driving bevel gear 46 is fixedly connected to the end of the bevel gear shaft 47, and the driving bevel gear 46 is meshed with a driven bevel gear 43, and the driven bevel gear 43 is fixedly installed on the lower end of a steering shaft 44, and the steering shaft 44 is rotatably installed on the upper end wall of the bevel gear cavity 42, and a rotating frame 10 is fixedly connected to the upper end of the steering shaft 44, and a stabilizing ring 45 is connected between the rotating frame 10 and the lifting frame 9, and a sliding cavity 78 is provided on the rotating frame 10, and an electric screw 41 is rotatably connected to the end wall of the sliding cavity 78, and the outer surface of the electric screw 41 is threadedly connected to the slide plate 11; During operation, the steering motor 48 is started to drive the bevel gear shaft 47 to rotate, thereby driving the active bevel gear 46 to rotate, and the active bevel gear 46 is meshed with the driven bevel gear 43, thereby driving the steering shaft 44 to rotate, thereby driving the rotating frame 10 to rotate, thereby driving the slide plate 11 to rotate, thereby driving the recycled concrete column 16 to rotate, and after rotating to the corresponding position, the electric screw 41 is rotated, thereby driving the slide plate 11 to move, thereby driving the recycled concrete column 16 to move.

[0027] Advantageously, a stabilizing mechanism is connected to the base plate 1, and the stabilizing mechanism is used to increase the stability of the cylinder 6. The stabilizing mechanism includes a lower support block 79 symmetrically fixedly connected to the base plate 1, and a lower connecting shaft 28 is rotatably connected to the lower support block 79, and one end of a support connecting rod 3 is fixedly connected to the lower connecting shaft 28, and the other end of the support connecting rod 3 is fixedly connected to an upper connecting shaft 29, and the upper connecting shaft 29 is rotatably connected to an upper support block 4, and the upper support block 4 is fixedly installed at the lower part of the support ring 5, and the support ring 5 is fixedly installed on the cylinder 6.

[0028] Advantageously, a closing mechanism is provided on the bottom plate 1, and the closing mechanism is used to close the cylinder 6. The closing mechanism includes a through hole 21 through-machined on the bottom plate 1, and a closed cavity 60 is machined on the end wall of the through hole 21. A closed electric push rod 59 is symmetrically rotatably connected to the end wall of the closed cavity 60, and a closing plate 34 is threadedly connected to the outer surface of the closed electric push rod 59. A closing pad 62 is provided on the end wall of the closing plate 34 close to each other, and a closing groove 61 is fixedly connected to the end wall of the closing pad 62. The upper part of the cylinder 6 is rotatably connected to the electric telescopic shaft 30, and the upper end of the electric telescopic shaft 30 is fixedly connected to the cover plate 7, and the lower part of the cover plate 7 is fixedly connected to the upper closed ring 51, and the inner surface of the upper closed ring 51 is fixedly connected to the upper clamping pad 52; During operation, after the recycled concrete column 16 enters the cylinder 6, the closed electric push rod 59 rotates, thereby driving the closing plate 34 to rotate, thereby driving the closing groove 61 to move, thereby clamping the lower end of the clamping motor 66 of the recycled concrete column 1, and closing the lower part of the cylinder 6, so that the electric telescopic shaft 30 rotates, thereby driving the cover plate 7 to rotate to the upper side of the cylinder 6, and then the electric telescopic shaft 30 moves downward, thereby driving the cover plate 7 to move downward, thereby driving the upper side closing ring 51 to move downward, and closing the upper part of the cylinder 6, so that the upper side clamping pad 52 clamps the upper part of the recycled concrete column 16.

[0029] Advantageously, a control mechanism is connected to the bottom plate 1, and the control mechanism is used to control the entire device. The control mechanism includes an operation table 22 fixedly connected to the bottom plate 1, and the operation table 22 is fixedly connected to a display panel 26. The operation table 22 is provided with a plurality of buttons 27. A control processor is provided in the operation table 22, and the control processor is signal-connected to the buttons 27, and the control processor is signal-connected to the display panel 26. A signal line jack 33 is provided on the operation table 22, and the signal line jack 33 is signal-connected to the control processor. One end of the signal line is inserted into the signal line jack 33, and the other end of the signal line is connected to the corresponding electrical component; When working, the corresponding button 27 is pressed to transmit a signal to the control processor. The control processor sends a signal after processing. The corresponding signal is transmitted to the corresponding electrical component through the signal line, so that the corresponding electrical component moves. The information transmitted by the corresponding electrical component is processed by the control processor and displayed on the display panel 26.

[0030] The present invention provides a method for detecting freeze-thaw resistance of recycled concrete, based on the above-mentioned freeze-thaw resistance detection device for recycled concrete, the steps include: Step 1: Control the movement of the mechanism to control the entire device; Step 2: The clamping mechanism moves to clamp the recycled concrete column 16; Step 2: After clamping, the rotating mechanism moves, thereby driving the recycled concrete column 16 to rotate to the upper side of the cylinder 6; Step 3: After the recycled concrete column 16 rotates to the upper side of the cylinder 6, the lifting mechanism moves, thereby driving the recycled concrete column 16 to enter the cylinder 6; Step 4: Enter the cylinder 6, and the closing mechanism moves to close the cylinder 6, thereby supporting and clamping the recycled concrete column 16; Step 5: After the support is clamped, the freeze-thaw environment simulation mechanism moves, thereby simulating the freeze-thaw environment, which is convenient for testing the recycled concrete column 16; Step 6: When simulating the freeze-thaw environment, the auxiliary mechanism moves to assist in simulating the environment; Step 7: After the simulation is completed, the detection mechanism moves to detect the damage caused to the recycled concrete column 16 after the simulated environment.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting freeze-thaw resistance of recycled concrete, characterized in that: The invention comprises a bottom plate (1), on which a freeze-thaw environment simulation mechanism is provided, wherein the freeze-thaw environment simulation mechanism comprises a cylinder (6) fixedly connected to the upper part of the bottom plate (1), wherein a cavity (53) is provided in the cylinder (6), wherein a screw rod (36) is rotatably connected between the end walls of the cavity (53), wherein the screw rod (36) is dynamically connected to a simulation motor, wherein the simulation motor is fixedly installed in the cylinder (6), wherein a simulation cylinder (35) is threadedly connected to the outer surface of the screw rod (36), and wherein the simulation cylinder (35) is slidably connected to the end wall of the cavity (53), wherein a hot air cavity (55) is provided in the simulation cylinder (35), wherein a hot air nozzle (37) is evenly fixedly connected to the end wall of the hot air cavity (55), wherein the outlet position of the hot air nozzle (37) extends to the inner end wall of the simulation cylinder (35), and wherein the simulation cylinder (35) at the lower side of the hot air cavity (55) is provided with a hot air nozzle (37). 5) is provided with an impact chamber (56), a reciprocating electric push rod (54) is fixedly connected to the end wall of the impact chamber (56), the moving end of the reciprocating electric push rod (54) extends to the inner end wall of the simulation cylinder (35), the moving end of the reciprocating electric push rod (54) is fixedly connected to the impact head (38), a water storage chamber (57) is provided in the simulation cylinder (35) below the impact chamber (56), a water spray nozzle (39) is evenly fixedly connected to the end wall of the water storage chamber (57), the outlet position of the water spray nozzle (39) extends to the inner end wall of the simulation cylinder (35), a cold air chamber (58) is provided in the simulation cylinder (35) below the water storage chamber (57), a cold air nozzle (40) is evenly fixedly connected to the end wall of the cold air chamber (58), the outlet position of the cold air nozzle (40) extends to the inner end wall of the simulation cylinder (35).

2. The device for detecting freeze-thaw resistance of recycled concrete according to claim 1, characterized in that: The simulation cylinder (35) is connected to a detection mechanism, which comprises an annular groove (70) provided on the inner end wall of the simulation cylinder (35) between the impact cavity (56) and the water storage cavity (57); a detection gear cavity (74) is provided on the end wall of the annular groove (70); a detection gear shaft (76) is rotatably connected between the end walls of the detection gear cavity (74); the detection gear shaft (76) is fixedly connected to a power output shaft of a detection motor fixedly installed in the simulation cylinder (35); a detection gear (75) meshing with an annular rack (71) is fixedly installed on the outer surface of the detection gear shaft (76); the annular rack (71) is rotatably installed between the end walls of the annular groove (70); an ultrasonic probe (72) is symmetrically fixedly connected to the inner surface of the annular rack (71); and a visual probe (73) is symmetrically fixedly connected to the inner surface of the annular rack (71).

3. A device for detecting freeze-thaw resistance of recycled concrete according to claim 2, characterized in that: The bottom plate (1) is provided with an auxiliary mechanism, the auxiliary mechanism comprising a hot air pump (20) fixedly mounted on the upper part of the bottom plate (1), the hot air pump (20) being connected to one end of a hot air pipe (25), the other end of the hot air pipe (25) being in communication with the hot air cavity (55), a refrigeration pump (31) being fixedly connected to the upper part of the bottom plate (1), the refrigeration pump (31) being connected to one end of a cold air pipe (32), the other end of the cold air pipe (32) being in communication with the cold air cavity (58), a water supply pump (2) being fixedly connected to the bottom plate (1), the water supply pump (2) being connected to one end of a water delivery pipe (23), the other end of the water delivery pipe (23) being connected to a water supply device, the water supply pump (2) being connected to one end of a delivery pipe (24), the other end of the delivery pipe (24) being in communication with the water storage cavity (57).

4. The device for detecting freeze-thaw resistance of recycled concrete according to claim 3, characterized in that: The front part of the base plate (1) is connected to a slide plate (11) through a lifting mechanism, and the slide plate (11) is connected to a clamping mechanism, and the clamping mechanism includes an electric push rod (12) fixedly installed on the lower side of the front part of the slide plate (11), and the lower end of the electric push rod (12) is fixedly connected to a disk (13), and the lower part of the disk (13) is evenly and evenly spaced. A clamping screw (64) is rotatably connected between the end walls of the clamping slot (65), and the clamping screw (64) extends into a gear cavity (77) provided in the electric push rod (12), and a drive shaft (67) is rotatably connected to the end wall of the gear cavity (77), and the drive shaft (67) is fixedly installed on the gear cavity (77). The electric push rod (12) is connected to the power output shaft of the clamping motor (66), and the lower end of the driving shaft (67) is fixedly connected to a driving gear (68), and the driving gear (68) is meshed with a driven gear (69). The driven gear (69) is fixedly installed at the end of the clamping screw (64) in the gear cavity (77). The outer surface of the clamping screw (64) is threadedly connected to a clamping nut plate (14), and the clamping nut plate (14) is slidably installed between the end walls of the clamping slot (65). The inner surface of the clamping nut plate (14) is fixedly connected to a clamping block (15), and a recycled concrete column (16) is clamped between the clamping blocks (15).

5. The device for detecting freeze-thaw resistance of recycled concrete according to claim 4, characterized in that: The lifting mechanism comprises a fixed frame (8) fixedly mounted on the front part of the base plate (1), a lifting slot (50) is provided on the front part of the fixed frame (8), a lifting screw (49) connected to the power output shaft of a lifting motor (18) fixedly mounted on the fixed frame (8) is rotatably connected between the end walls of the lifting slot (50), a lifting nut block (63) is threadedly connected to the outer surface of the lifting screw (49), the lifting nut block (63) is slidably connected between the end walls of the lifting slot (50), a lifting frame (9) is fixedly connected to the lifting nut block (63), a stabilizing plate (17) is symmetrically fixedly connected to the lifting frame (9), and a rotating mechanism is provided on the stabilizing plate (17).

6. The device for detecting freeze-thaw resistance of recycled concrete according to claim 5, characterized in that: The rotating mechanism comprises a bevel gear cavity (42) provided in the lifting frame (9), a bevel gear shaft (47) connected to a power output shaft of a steering motor (48) fixedly installed in the lifting frame (9) being rotatably connected on the end wall of the bevel gear cavity (42), a driving bevel gear (46) being fixedly connected to the end of the bevel gear shaft (47), the driving bevel gear (46) being meshed with a driven bevel gear (43), the driven bevel gear (43) being fixedly installed at the end of the lower side of the steering shaft (44) The steering shaft (44) is rotatably mounted on the upper end wall of the bevel gear cavity (42), the upper end of the steering shaft (44) is fixedly connected to a rotating frame (10), a stabilizing ring (45) is connected between the rotating frame (10) and the lifting frame (9), a sliding cavity (78) is provided on the rotating frame (10), an electric lead screw (41) is rotatably connected to the end wall of the sliding cavity (78), and the outer surface of the electric lead screw (41) is threadedly connected to the slide plate (11).

7. The device for detecting freeze-thaw resistance of recycled concrete according to claim 6, characterized in that: The bottom plate (1) is connected to a stabilizing mechanism, the stabilizing mechanism comprising a lower support block (79) symmetrically fixedly connected to the bottom plate (1), the lower support block (79) being rotatably connected to a lower connecting shaft (28), the lower connecting shaft (28) being fixedly connected to one end of a supporting connecting rod (3), the other end of the supporting connecting rod (3) being fixedly connected to an upper connecting shaft (29), the upper connecting shaft (29) being rotatably connected to an upper support block (4), the upper support block (4) being fixedly mounted on the lower part of a supporting ring (5), and the supporting ring (5) being fixedly mounted on the cylinder (6).

8. The device for detecting freeze-thaw resistance of recycled concrete according to claim 7, characterized in that: The bottom plate (1) is provided with a closing mechanism, the closing mechanism comprising a through hole (21) through-machined on the bottom plate (1), a closing cavity (60) being machined on the end wall of the through hole (21), a closing electric push rod (59) being symmetrically rotatably connected on the end wall of the closing cavity (60), a closing plate (34) being threadedly connected on the outer surface of the closing electric push rod (59), a closing pad (62) being provided on the end wall of one side close to each other, a closing groove (61) being fixedly connected on the end wall of the closing pad (62), an electric telescopic rotating shaft (30) being rotatably connected on the upper part of the cylinder (6), a cover plate (7) being fixedly connected to the upper end of the electric telescopic rotating shaft (30), an upper side closing ring (51) being fixedly connected to the lower part of the cover plate (7), an upper side clamping pad (52) being fixedly connected to the inner surface of the upper side closing ring (51).

9. The device for detecting freeze-thaw resistance of recycled concrete according to claim 8, characterized in that: The base plate (1) is connected to a control mechanism, the control mechanism comprising an operating table (22) fixedly connected to the base plate (1), the operating table (22) being fixedly connected to a display panel (26), the operating table (22) being provided with a plurality of buttons (27), a control processor being provided inside the operating table (22), the control processor being signal-connected to the buttons (27), the control processor being signal-connected to the display panel (26), the operating table (22) being provided with a signal line jack (33), the signal line jack (33) being signal-connected to the control processor.

10. A method for detecting freeze-thaw resistance of recycled concrete, based on the freeze-thaw resistance detection device of recycled concrete according to claim 9, characterized in that: The steps include: Step 1: Control the movement of the mechanism to control the entire device; Step 2: The clamping mechanism moves, thereby clamping the recycled concrete column (16); Step 2: After clamping, the rotating mechanism moves, thereby driving the recycled concrete column (16) to rotate to the upper side of the cylinder (6); Step 3: After the recycled concrete column (16) rotates to the upper side of the cylinder (6), the lifting mechanism moves, thereby driving the recycled concrete column (16) to enter the cylinder (6); Step 4: Entering into the cylinder (6), the closing mechanism moves, thereby closing the cylinder (6), thereby supporting and clamping the recycled concrete column (16); Step 5: After the support is clamped, the freeze-thaw environment simulation mechanism moves, thereby simulating the freeze-thaw environment, which is convenient for testing the recycled concrete column (16); Step 6: When simulating the freeze-thaw environment, the auxiliary mechanism moves to assist in simulating the environment; Step 7: After the simulation is completed, the detection mechanism moves, thereby detecting the damage caused to the recycled concrete column (16) after the simulated environment.

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