Reinforced concrete beam testing device for simulating simultaneous action of corrosion and load

Abstract

The invention relates to the technical field of concrete beam test devices, in particular to a reinforced concrete beam test device for simulating simultaneous action of corrosion and load, which comprises a test box, a support cross beam is fixedly mounted in the test box, and first filter plates are fixedly connected to two sides of the support cross beam respectively. Through the arrangement of a supporting cross beam and a first filter plate, the interior of the test box is divided into two parts, and a connecting box is arranged on the upper side of the supporting cross beam; the connecting base is driven to move through the connecting box, so that the grinding roller conducts grinding along the surface of the concrete beam, flatness detection is conducted on the surface of the ground concrete beam through the detection mechanism in the grinding process, and when it is detected that the surface of the ground concrete beam is not flat, the grinding roller conducts grinding on the surface of the concrete beam. The grinding roller returns to grind the upper end of the concrete beam again, and when it is detected that the upper end of the concrete beam is not sunken, continuous corrosion simulation and load tests are conducted on the concrete beam through the ballast mechanism and the corrosion spraying mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of concrete beam test devices, and in particular to a reinforced concrete beam test device for simulating the simultaneous effects of corrosion and load. Background Art

[0002] For example, the Chinese patent with announcement number CN115127917A discloses a reinforced concrete beam test device that simulates the simultaneous effects of corrosion and load, including a test beam placed on the rigid base, a water tank designed under the test beam, a water pump provided on one side of the water tank, a bracket provided on the outer side of the rigid base, two rows of nozzle connecting pipes installed on the bracket, nozzles connected to the nozzle connecting pipes, the nozzles and the water pump are connected through water pipes for intermittent spraying to simulate the corrosion environment, a servo actuator is installed on the movable cover plate, the servo actuator is connected to the distributor, and the load is evenly and symmetrically loaded onto the test beam through the distributor and the force transmission component.

[0003] However, the above scheme has the following shortcomings: in the above patent, the test beam is sprayed with a sprinkler to simulate the situation of unstable erosion in actual engineering, and the servo actuator, distributor and force transmission member are evenly and symmetrically loaded onto the test beam to test the bearing capacity, fatigue strength, etc. of the test beam. However, since concrete is cast by concrete and steel bars, when the surface of the reinforced concrete beam used for the experiment is uneven, when the load test is carried out, the convex part of the surface of the reinforced concrete beam will bear the pressure first, while the concave part cannot bear the pressure, resulting in unstable pressure on the surface of the reinforced concrete beam. For this reason, we have introduced a reinforced concrete beam test device that simulates the simultaneous action of rust and load. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a reinforced concrete beam testing device that simulates the simultaneous effects of corrosion and load, so as to solve the problems raised in the above-mentioned background technology.

[0005] The object of the present invention is achieved as follows: A reinforced concrete beam test device for simulating the simultaneous action of corrosion and load, comprising a test box, a support beam is fixedly installed in the test box, first filter plates are fixedly connected to both sides of the support beam, and the test box is divided into two parts by the arrangement of the support beam and the first filter plate, a connection box is provided on the upper side of the support beam, the connection box is movably connected to the test box, a connection seat is provided on the lower side of the connection box, a grinding roller is movably connected to the lower end of the connection seat, one end of the grinding roller is fixedly connected to the output end of the transmission motor, and the transmission motor is fixedly installed in the connection seat; Both sides of the grinding roller are provided with detection mechanisms, which are movably connected to the lower end of the connecting seat, and the upper end of the concrete beam is ground by the grinding roller. The detection mechanism detects the flatness of the surface of the concrete beam after grinding. When it is detected that the surface of the concrete beam after grinding is uneven, the grinding roller grinds the upper end of the concrete beam again. Two T-shaped support rods are fixedly connected to the upper end of the connecting seat, and the T-shaped support rods are movably connected in the connecting box; The upper end of the T-shaped support rod on the left side is fixedly connected with a mounting rod, a clamping groove is provided on the upper end of the mounting rod, a plug hole is provided on the outer side of the mounting rod, the plug hole is communicated with the clamping groove, a cleaning mechanism is clamped in the clamping groove, the cleaning mechanism is arranged in a supporting box, the supporting box is fixedly installed in a dust storage box, the dust storage box is movably installed on the upper end of the connecting box, and a plurality of second filter plates are fixedly connected on both sides of the supporting box; A clamping mechanism is provided in the connection box, one end of which is clamped in the plug-in hole and the cleaning mechanism respectively. When the dust storage box is installed on the upper end of the connection box, the clamping mechanism will be pressed, and the clamping end of the clamping mechanism is clamped in the plug-in hole and the cleaning mechanism, so that the cleaning mechanism can be driven to move when the T-shaped support rod on the left moves. A ballast mechanism is provided at the upper end of the test box, and a corrosion spray mechanism is provided on the inner side of the test box. A dust guide pipe is fixedly connected to the upper end of the connection seat, and the upper end of the dust guide pipe passes through the connection box and extends into the dust storage box.

[0006] Furthermore, a dual-axis motor is fixedly installed in the connecting box, and the output end of the dual-axis motor extends out of the connecting box and is fixedly connected to a connecting gear, which is meshed in a tooth groove, which is opened on the inner side of the connecting box, and both sides of the connecting box are fixedly connected with limiting blocks, which are slidably connected in a limiting groove, and the limiting groove is opened in the tooth groove.

[0007] Furthermore, the detection mechanism includes a connecting rod, which is movably connected to the lower end of the connecting seat, and a plurality of third T-shaped connecting rods are provided at the lower end of the connecting rod. The upper end of the third T-shaped connecting rod is slidably connected to the connecting cavity, and the connecting cavity is opened in the connecting rod. The upper end of the third T-shaped connecting rod is fixedly connected to a connecting spring, and the upper end of the connecting spring is fixedly connected to the connecting cavity. A push switch is sleeved on the inner side of the connecting spring, and the push switch is fixedly installed at the upper end of the connecting cavity. The lower end of the third T-shaped connecting rod is movably connected to a guide wheel.

[0008] Furthermore, the cleaning mechanism includes a sliding rod, which is movably connected in a supporting box, and a number of cleaning brushes are fixedly connected on both sides of the sliding rod. A limiting hole is provided on the outer side of the sliding rod, and a second supporting spring is fixedly connected to the upper end of the sliding rod, and the second supporting spring is fixedly connected to the supporting box.

[0009] Furthermore, the clamping mechanism includes a first T-shaped connecting rod, which is slidably connected in a first sliding cavity. The first sliding cavity is opened in a connecting box. The lower end of the first T-shaped connecting rod is fixedly connected to a first return spring, and the other end of the first return spring is fixedly connected to the first sliding cavity. The lower end of the first T-shaped connecting rod is fixedly connected to a pull rope, and the pull rope extends into the second sliding cavity away from one end of the first T-shaped connecting rod and is fixedly connected to the second T-shaped connecting rod.

[0010] Furthermore, the second T-shaped connecting rod is slidably connected in the second sliding cavity, the second sliding cavity is opened in the connecting box, one end of the second T-shaped connecting rod is fixedly connected to the second return spring, the other end of the second return spring is fixedly connected to the second sliding cavity, and the second T-shaped connecting rod is provided with a cross-shaped slot in the end away from the second sliding cavity, a cross-shaped limiting rod is clamped in the cross-shaped slot, and one end of the cross-shaped limiting rod is clamped in the plug-in hole and the limiting hole in sequence.

[0011] Furthermore, the ballast mechanism includes a ballast plate, and two telescopic cylinders are fixedly connected to the upper end of the test box. The output ends of the telescopic cylinders extend into the test box and are fixedly connected to the ballast plate.

[0012] Furthermore, the corrosion spray mechanism includes two spray plates, the spray plates are fixedly connected to the inner side of the test box, a circulation pump is fixedly connected inside the test box, the input end of the circulation pump extends into the test box, and the output end is fixedly connected to the two spray plates.

[0013] Furthermore, both ends of the test box are movably connected with box doors, the upper end of the supporting beam is fixedly connected with a first positioning block, and a second positioning block is movably installed, and observation windows are fixedly installed on both sides of the test box.

[0014] Furthermore, a fan is fixedly installed in the dust storage box, the output end of the fan is fixedly connected to the telescopic hose, the other end of the telescopic hose is fixedly connected to the test box and extends into the external environment, and a first support spring is sleeved on the outer side of the T-shaped support rod, one end of the first support spring is fixedly connected to the connecting box, and the other end is fixedly connected to the connecting seat.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the connecting seat is driven to move by the connecting box, so that the grinding roller is polished along the surface of the concrete beam, and the flatness of the polished concrete beam surface is detected by the detection mechanism during the polishing process. When it is detected that the surface of the polished concrete beam is uneven, the grinding roller will return to polish the upper end of the concrete beam again. When it is detected that there is no depression at the upper end of the concrete beam, the grinding roller returns to the initial position, and the concrete beam can be continuously subjected to simulated rust and load tests through the ballast mechanism and the corrosion spray mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

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

[0018] Figure 2 It is a cross-sectional structural schematic diagram of the connection relationship between the connection seat and the connection box of the present invention.

[0019] Figure 3 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the connecting seat of the present invention.

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the support box of the present invention.

[0022] Figure 6 For the present invention Figure 3 Enlarged structural diagram at B in the middle.

[0023] Figure 7 It is a three-dimensional structural schematic diagram of the connection relationship between the connection socket and the connection box of the present invention.

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the detection mechanism of the present invention.

[0025] Fig. 9 It is a schematic diagram of the three-dimensional structure of the connecting seat of the present invention.

[0026] Fig.10 It is a schematic cross-sectional structural diagram of the concrete beam of the present invention in the installed state.

[0027] Fig.11 It is a schematic diagram of the main structure of the present invention.

[0028] In the figure: 1 test box; 2 second positioning block; 3 box door; 4 cross-shaped slot; 5 tooth slot; 6 limit slot; 7 ballast plate; 8 telescopic cylinder; 9 dust storage box; 10 telescopic hose; 11 connecting seat; 12 supporting beam; 13 circulating pump; 14 first positioning block; 15 cross-shaped limit rod; 16 first filter plate; 17 observation window; 18 spray plate; 19 third T-shaped connecting rod; 20 guide wheel; 21 connecting rod; 22 grinding roller; 23 connecting cavity; 24 T-shaped supporting rod; 25 first supporting spring; 26 double-axis motor; 27 guide Dust pipe; 28 support box; 29 fan; 30 connection box; 31 push switch; 32 connection spring; 33 mounting rod; 34 connection gear; 35 limit block; 36 transmission motor; 37 plug-in hole; 38 snap-in groove; 39 limit hole; 40 slide bar; 41 second filter plate; 42 cleaning brush; 43 concrete beam; 44 second support spring; 45 pull rope; 46 first return spring; 47 first T-type connecting rod; 48 first sliding cavity; 49 second return spring; 50 second sliding cavity; 51 second T-type connecting rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 1-11 The reinforced concrete beam test device shown in the figure simulates the simultaneous action of corrosion and load, including a test box 1, a support beam 12 is fixedly installed in the test box 1, the support beam 12 is used to place the concrete beam 43, and the two sides of the support beam 12 are respectively fixedly connected with the first filter plate 16. The test box 1 is divided into two parts by the arrangement of the support beam 12 and the first filter plate 16. The upper part is used to test the concrete beam 43, and the lower part is used to store the salt solution. A connection box 30 is provided on the upper side of the support beam 12. The connection box 30 is connected to the first filter plate 16. 0 is movably connected in the test box 1, a connection seat 11 is provided at the lower side of the connection box 30, a cavity recessed inwardly is provided at the lower end of the connection seat 11, a grinding roller 22 is movably connected in the lower end of the connection seat 11, the grinding roller 22 is used to grind the upper end of the concrete beam 43, one end of the grinding roller 22 is fixedly connected to the output end of the transmission motor 36, the transmission motor 36 is fixedly installed in the connection seat 11, the transmission motor 36 is turned on to drive the grinding roller 22 connected to its output end to start rotating, and the upper end of the concrete beam 43 is grinded by the rotating grinding roller 22; Detection mechanisms are provided on both sides of the grinding roller 22, and the detection mechanisms are movably connected to the lower end of the connecting seat 11. The upper end of the concrete beam 43 is ground by the grinding roller 22, and the detection mechanism detects the flatness of the surface of the concrete beam 43 after grinding. When it is detected that the surface of the concrete beam 43 after grinding is uneven, the grinding roller 22 grinds the upper end of the concrete beam 43 again. Two T-shaped support rods 24 are fixedly connected to the upper end of the connecting seat 11, and the T-shaped support rods 24 are movably connected in the connecting box 30. When the grinding roller 22 contacts the upper end of the concrete beam 43, the connecting seat 11 will move upward at this time, and the movement of the connecting seat 11 drives the T-shaped support rods 24 to move synchronously; The upper end of the left T-shaped support rod 24 is fixedly connected to a mounting rod 33, and a clamping groove 38 is provided at the upper end of the mounting rod 33. A plug hole 37 is provided on the outer side of the mounting rod 33, and the plug hole 37 is communicated with the clamping groove 38. A cleaning mechanism is clamped in the clamping groove 38, and the cleaning mechanism is arranged in the support box 28. The support box 28 is fixedly installed in the dust storage box 9. The dust storage box 9 is used to store the dust polished by the grinding roller 22. The dust storage box 9 is movably installed at the upper end of the connection box 30. The support box 28 A plurality of second filter plates 41 are fixedly connected on both sides, and the dust entering the dust storage box 9 is filtered by the second filter plates 41 in the dust storage box 9, and the filtered air is discharged into the external environment. A movable door is provided at one end of the dust storage box 9, and an opening is provided at the upper end of the test box 1. The dust storage box 9 can be removed through the opening at the upper end of the test box 1, and the dust in the dust storage box 9 can be dumped by opening the movable door. After dumping, the dust storage box 9 can be reinstalled to the upper end of the connection box 30 by a screw. A clamping mechanism is provided in the connection box 30, one end of which is clamped in the plug hole 37 and the cleaning mechanism respectively. When the dust storage box 9 is installed on the upper end of the connection box 30, the clamping mechanism will be pressed, and the clamping end of the clamping mechanism is clamped in the plug hole 37 and the cleaning mechanism, so that the T-shaped support rod 24 on the left side can drive the cleaning mechanism to move when it moves. When the connection seat 11 moves upward, it will drive the two T-shaped support rods 24 connected to its upper end to move. The movement of the T-shaped support rod 24 on the left side drives the installation rod 33 at its upper end to move. The movement of the installation rod 33 will drive the cleaning mechanism to move. The surface of the second filter plate 41 is cleaned to prevent the second filter plate 41 from being blocked. A ballast mechanism is provided at the upper end of the test box 1, a corrosion spray mechanism is provided inside the test box 1, and a salt solution is provided at the bottom inside the test box 1. The salt solution is extracted by the corrosion spray mechanism, and the extracted salt solution will be sprayed onto the surface of the concrete beam 43. A dust guide pipe 27 is fixedly connected to the upper end of the connecting seat 11, and the upper end of the dust guide pipe 27 passes through the connecting box 30 and extends into the dust storage box 9. The dust polished by the grinding roller 22 will be sucked into the dust guide pipe 27, and the powder entering the dust guide pipe 27 will enter the dust storage box 9 to be filtered and stored.

[0031] Embodiment 2: On the basis of Example 1, in order to prevent the second filter plate 41 from being blocked and affecting the dust filtering effect, a dual-axis motor 26 is fixedly installed in the connection box 30. When the dual-axis motor 26 is actually used, a suitable size and model can be selected. The output end of the dual-axis motor 26 extends out of the connection box 30 and is fixedly connected to the connection gear 34. The connection gear 34 is meshed in the tooth groove 5. The tooth groove 5 is opened on the inner side of the connection box 30. The dual-axis motor 26 is turned on to drive the connection gear 34 connected to its output end to rotate. Since the connection gear 34 is meshed in the tooth groove 5, the connection box 30 will start to move during the rotation of the connection gear 34. The connection box 30 is fixedly connected to the limiting blocks 35 on both sides. The limiting blocks 35 are slidably connected in the limiting groove 6. The limiting groove 6 is opened in the tooth groove 5. The limiting blocks 35 are slidably connected in the limiting groove 6 to limit the connection box 30, so that the connection box 30 can move stably. The detection mechanism includes a connecting rod 21, which is movably connected to the lower end of the connecting seat 11, and a plurality of third T-shaped connecting rods 19 are provided at the lower end of the connecting rod 21. The upper end of the third T-shaped connecting rod 19 is slidably connected to the connecting cavity 23, and the connecting cavity 23 is opened in the connecting rod 21. The upper end of the third T-shaped connecting rod 19 is fixedly connected to a connecting spring 32, and the upper end of the connecting spring 32 is fixedly connected to the connecting cavity 23. A pressing switch 31 is sleeved on the inner side of the connecting spring 32, and the pressing switch 31 is fixedly installed at the upper end of the connecting cavity 23. The lower end of the third T-shaped connecting rod 19 is movably connected to a guide wheel 20. Through the arrangement of the plurality of third T-shaped connecting rods 19 and the guide wheel 20, when the guide wheel 20 passes through the recessed position, under the elastic force of the connecting spring 32, the third T-shaped connecting rod 19 moves downward to cancel the pressing of the pressing switch 31. At this time, the grinding roller 22 returns to move again to grind the surface of the concrete beam 43 again. The cleaning mechanism includes a slide bar 40, which is movably connected to the support box 28. A plurality of cleaning brushes 42 are fixedly connected to both sides of the slide bar 40. After the dust storage box 9 is installed, a certain space is left between the cleaning brush 42 at the bottom and the bottom of the support box 28 for making way when the dust storage box 9 is removed. A limiting hole 39 is provided on the outer side of the slide bar 40. A second supporting spring 44 is fixedly connected to the upper end of the slide bar 40. The second supporting spring 44 is fixedly connected to the support box 28. When the T-shaped support bar 24 on the left side moves upward, the slide bar 40 is driven to move. The movement of the slide bar 40 drives the plurality of cleaning brushes 42 to move. The moving cleaning brush 42 can clean the second filter plate 41 to prevent impurities from being blocked in the second filter plate 41. The clamping mechanism includes a first T-shaped connecting rod 47, which is slidably connected in a first sliding cavity 48. The first sliding cavity 48 is opened in the connecting box 30. The lower end of the first T-shaped connecting rod 47 is fixedly connected to a first return spring 46, and the other end of the first return spring 46 is fixedly connected to the first sliding cavity 48. The lower end of the first T-shaped connecting rod 47 is fixedly connected to a pull rope 45, and the pull rope 45 extends into the second sliding cavity 50 away from one end of the first T-shaped connecting rod 47, and is fixedly connected to the second T-shaped connecting rod 51. When the dust storage box 9 is removed to dump the dust, under the elastic force of the first return spring 46, the first T-shaped connecting rod 47 will move upward along the first sliding cavity 48 The first T-shaped connecting rod 47 moves upward to drive the pull rope 45 to move, and the movement of the pull rope 45 drives the second T-shaped connecting rod 51 to move, and the movement of the second T-shaped connecting rod 51 drives the cross-shaped limiting rod 15 to move, and the cross-shaped limiting rod 15 moves out of the limiting hole 39 and the plug-in hole 37, so that the dust storage box 9 can be removed. At the same time, when the mounting rod 33 moves upward, it drives the sliding rod 40 to move, and when the sliding rod 40 moves, it drives the cross-shaped limiting rod 15 to move, so that the cross-shaped limiting rod 15 is separated from the cross-shaped slot 4. When the sliding rod 40 moves downward, under the elastic force of the second supporting spring 44, the cross-shaped limiting rod 15 will be re-engaged in the cross-shaped slot 4; The second T-shaped connecting rod 51 is slidably connected in the second sliding cavity 50, and the second sliding cavity 50 is opened in the connecting box 30. One end of the second T-shaped connecting rod 51 is fixedly connected to the second return spring 49, and the other end of the second return spring 49 is fixedly connected to the second sliding cavity 50. A cross-shaped slot 4 is opened in the end of the second T-shaped connecting rod 51 away from the second sliding cavity 50, and a cross-shaped limit rod 15 is clamped in the cross-shaped slot 4. One end of the cross-shaped limit rod 15 is clamped in the plug hole 37 and the limit hole 39 in sequence.

[0032] The ballast mechanism includes a ballast plate 7. Two telescopic cylinders 8 are fixedly connected to the upper end of the test box 1. The output ends of the telescopic cylinders 8 extend into the test box 1 and are fixedly connected to the ballast plate 7. The two telescopic cylinders 8 are opened to drive the ballast plate 7 connected to the output ends thereof to move downward. The ballast plate 7 is pressed on the upper end of the concrete beam 43 to perform a load test on the concrete beam 43. The corrosion spray mechanism includes two spray plates 18. The spray plates 18 are long strip-shaped water pipes. The two spray plates 18 There are a number of drainage holes on the opposite sides of the test box 1, through which the salt solution enters the spray plate 18, and then is sprayed onto the surface of the concrete beam 43 through the several drainage holes. The spray plate 18 is fixedly connected to the inner side of the test box 1, and a circulating pump 13 is fixedly connected to the test box 1. The input end of the circulating pump 13 extends into the test box 1, and the output end is fixedly connected to the two spray plates 18. When the circulating pump 13 is turned on, the salt solution at the bottom of the test box 1 is drawn into the two spray plates 18, and the salt solution is sprayed outward through the spray plate 18 onto the surface of the concrete beam 43 to simulate the rust environment; Both ends of the test box 1 are movably connected with a box door 3, the upper end of the supporting beam 12 is fixedly connected with a first positioning block 14, and a second positioning block 2 is movably installed, observation windows 17 are fixedly installed on both sides of the test box 1, and a fan 29 is fixedly installed in the dust storage box 9, and the output end of the fan 29 is fixedly connected to the telescopic hose 10, and the other end of the telescopic hose 10 is fixedly connected to the test box 1 and extends into the external environment, and a first support spring 25 is sleeved on the outer side of the T-shaped support rod 24, one end of the first support spring 25 is fixedly connected to the connecting box 30, and the other end is fixedly connected to the connecting seat 11.

[0033] Working principle: when in use, open the right door 3 and push the concrete beam 43 to be tested into the upper end of the supporting beam 12. After placement, install the second positioning block 2 to the upper end of the supporting beam 12 by screws. After installation, open the left door 3, connect the external wires to the protruding part of the steel bars of the concrete beam 43, and turn on the dual-axis motor 26 to drive the connecting gear 34 connected to its output end to rotate. Since the connecting gear 34 is engaged in the tooth groove 5, the connecting box 30 will start to move during the rotation of the connecting gear 34. Turn on the transmission motor 36 to drive the grinding roller 22 connected to its output end to start rotating. When the connection box 30 drives the grinding roller 22 to move to the upper end of the concrete beam 43, the grinding roller 22 will be pushed to move upward. The movement of the grinding roller 22 drives the connecting seat 11 to move synchronously. The movement of the connecting seat 11 drives the two T-shaped support rods 24 connected to its upper end to move. At this time, the first support spring 25 is compressed. At the same time, when the T-shaped support rod 24 on the left side moves upward, it drives the slide bar 40 to move. The movement of the slide bar 40 drives several cleaning brushes 42 to move. The moving cleaning brushes 42 can clean the second filter plate 41 to prevent impurities from being blocked in the second filter plate 41. When the connection box 30 drives the connection seat 11 to move, the grinding roller 22 will grind the upper end of the concrete beam 43, and the right guide wheel 20 will move to the left. Since the left connection rod 21 is blocked, when the connection seat 11 moves to the right, the third T-shaped connection rod 19 will be squeezed and moved upward, so that the push switch 31 is pressed. Under the grinding of the grinding roller 22, the protrusion on the upper end of the concrete beam 43 will be ground off. When the left guide wheel 20 moves to the recessed position, the third T-shaped connection rod 19 will move downward. The corresponding pressing switch 31 is canceled, and the grinding roller 22 moves to the rightmost side and moves to the left again. At this time, the third T-shaped connecting rod 19 on the left side swings to the right, and the third T-shaped connecting rod 19 on the right side is pressed and moved upward. When the guide wheel 20 moves to the recessed position that has not been polished again, the corresponding third T-shaped connecting rod 19 moves downward, and the corresponding pressing switch 31 is canceled. At this time, the connecting seat 11 moves to the leftmost side and moves to the right again for polishing. By turning on the fan 29, the dust generated by the grinding roller 22 is sucked into the dust guide pipe 27. The dust entering the dust guide pipe 27 will enter the dust storage box 9 again. After being filtered by several second filter plates 41, the dust will be stored in the dust storage box 9, and the excess air will be discharged into the external environment through the telescopic hose 10. After the grinding is completed, the connecting seat 11 drives the grinding roller 22 to return to the initial position. By connecting the steel bars of the concrete beam 43 to the external power supply, the corrosion is accelerated by direct current. The two telescopic cylinders 8 are turned on to drive the ballast plate 7 connected to the output end thereof to move downward, and the ballast plate 7 is pressed on the upper end of the concrete beam 43 to perform a continuous load test on the concrete beam 43. The circulating pump 13 is turned on so that the salt solution at the bottom of the test box 1 is pumped into the two spray plates 18, and the salt solution is sprayed outwardly to the surface of the concrete beam 43 through the spray plates 18 to simulate the corrosion environment. The data is tested by pre-embedded sensors or pasted strain gauges, and the test data is entered into the computer through the corresponding data acquisition system to determine the data acquisition frequency. During the load loading test, a camera is used to record the entire destruction process through the observation window 17 to observe the development of cracks. After the test is completed, the concrete beam 43 can be taken out.

[0034] The above embodiments are only used to help understand the method and core idea of ​​the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A reinforced concrete beam test device for simulating the simultaneous effects of corrosion and load, comprising a test box (1), characterized in that: A support beam (12) is fixedly installed in the test box (1), and first filter plates (16) are fixedly connected to both sides of the support beam (12). The test box (1) is divided into two parts by the arrangement of the support beam (12) and the first filter plate (16). A connection box (30) is provided on the upper side of the support beam (12), and the connection box (30) is movably connected to the test box (1). A connection seat (11) is provided on the lower side of the connection box (30), and a grinding roller (22) is movably connected to the lower end of the connection seat (11). One end of the grinding roller (22) is fixedly connected to the output end of a transmission motor (36), and the transmission motor (36) is fixedly installed in the connection seat (11); Both sides of the grinding roller (22) are provided with detection mechanisms, the detection mechanisms are movably connected to the lower end of the connection seat (11), the upper end of the concrete beam (43) is ground by the grinding roller (22), and the detection mechanism detects the flatness of the surface of the ground concrete beam (43), and when it is detected that the surface of the ground concrete beam (43) is uneven, the grinding roller (22) grinds the upper end of the concrete beam (43) again, and the upper end of the connection seat (11) is fixedly connected to two T-shaped support rods, and the T-shaped support rods are movably connected to the connection box (30); The upper end of the T-shaped support rod on the left side is fixedly connected to a mounting rod (33), the upper end of the mounting rod (33) is provided with a clamping groove (38), the outer side of the mounting rod (33) is provided with a plug hole (37), the plug hole (37) is communicated with the clamping groove (38), a cleaning mechanism is clamped in the clamping groove (38), the cleaning mechanism is arranged in the support box (28), the support box (28) is fixedly installed in the dust storage box (9), the dust storage box (9) is movably installed on the upper end of the connection box (30), and a plurality of second filter plates (41) are fixedly connected to both sides of the support box (28); A clamping mechanism is provided in the connection box (30), one end of the clamping mechanism being clamped in the plug hole (37) and the cleaning mechanism respectively; when the dust storage box (9) is mounted on the upper end of the connection box (30), the clamping mechanism is pressed, and the clamping end of the clamping mechanism is clamped in the plug hole (37) and the cleaning mechanism, so that the cleaning mechanism can be driven to move when the T-shaped support rod on the left side moves; a ballast mechanism is provided at the upper end of the test box (1), and a corrosion spray mechanism is provided inside the test box (1); a dust guide pipe (27) is fixedly connected to the upper end of the connection seat (11), and the upper end of the dust guide pipe (27) passes through the connection box (30) and extends into the dust storage box (9).

2. A reinforced concrete beam test device for simulating simultaneous corrosion and load according to claim 1, characterized in that: A dual-axis motor (26) is fixedly installed in the connection box (30); an output end of the dual-axis motor (26) extends out of the connection box (30) and is fixedly connected to a connection gear (34); the connection gear (34) is meshed in a tooth groove (5); the tooth groove (5) is provided on the inner side of the connection box (30); both sides of the connection box (30) are fixedly connected to limit blocks (35); the limit blocks (35) are slidably connected in limit grooves (6); and the limit grooves (6) are provided in the tooth grooves (5).

3. The reinforced concrete beam testing device for simulating simultaneous corrosion and load according to claim 1, characterized in that: The detection mechanism comprises a connecting rod (21), wherein the connecting rod (21) is movably connected to the lower end of the connecting seat (11), a plurality of third T-shaped connecting rods are provided at the lower end of the connecting rod (21), the upper end of the third T-shaped connecting rod is slidably connected to the connecting cavity (23), the connecting cavity (23) is opened in the connecting rod (21), the upper end of the third T-shaped connecting rod is fixedly connected to a connecting spring (32), the upper end of the connecting spring (32) is fixedly connected to the connecting cavity (23), the inner side of the connecting spring (32) is sleeved with a push switch (31), the push switch (31) is fixedly installed at the upper end of the connecting cavity (23), and the lower end of the third T-shaped connecting rod is movably connected to a guide wheel (20).

4. The reinforced concrete beam test device for simulating simultaneous corrosion and load according to claim 1, characterized in that: The cleaning mechanism comprises a slide rod (40), the slide rod (40) being movably connected to a support box (28), a plurality of cleaning brushes (42) being fixedly connected to both sides of the slide rod (40), a limiting hole (39) being provided on the outer side of the slide rod (40), a second support spring (44) being fixedly connected to the upper end of the slide rod (40), and the second support spring (44) being fixedly connected to the support box (28).

5. The reinforced concrete beam test device for simulating simultaneous corrosion and load according to claim 1, characterized in that: The clamping mechanism comprises a first T-shaped connecting rod (21), the first T-shaped connecting rod (21) is slidably connected in a first sliding cavity (48), the first sliding cavity (48) is opened in a connecting box (30), a first return spring (46) is fixedly connected to the lower end of the first T-shaped connecting rod (21), the other end of the first return spring (46) is fixedly connected to the first sliding cavity (48), a pull rope (45) is fixedly connected to the lower end of the first T-shaped connecting rod (21), the pull rope (45) extends into the second sliding cavity (50) away from one end of the first T-shaped connecting rod (21), and is fixedly connected to the second T-shaped connecting rod.

6. A reinforced concrete beam test device for simulating simultaneous corrosion and load according to claim 4 or 5, characterized in that: The second T-shaped connecting rod is slidably connected in the second sliding cavity (50), the second sliding cavity (50) is opened in the connection box (30), one end of the second T-shaped connecting rod is fixedly connected to the second return spring (49), the other end of the second return spring (49) is fixedly connected to the second sliding cavity (50), and the second T-shaped connecting rod is provided with a cross-shaped slot (4) in the end away from the second sliding cavity (50), a cross-shaped limit rod (15) is clamped in the cross-shaped slot (4), and one end of the cross-shaped limit rod (15) is clamped in the plug hole (37) and the limit hole (39) in sequence.

7. The reinforced concrete beam testing device for simulating simultaneous corrosion and load according to claim 1, characterized in that: The ballast mechanism comprises a ballast plate (7), and two telescopic cylinders (8) are fixedly connected to the upper end of the test box (1), and the output ends of the telescopic cylinders (8) extend into the test box (1) and are fixedly connected to the ballast plate (7).

8. The reinforced concrete beam testing device for simulating simultaneous corrosion and load according to claim 1, characterized in that: The corrosion spray mechanism comprises two spray plates (18), the spray plates (18) being fixedly connected to the inner side of a test box (1), a circulating pump (13) being fixedly connected inside the test box (1), an input end of the circulating pump (13) extending into the test box (1), and an output end fixedly connected to the two spray plates (18).

9. The reinforced concrete beam testing device for simulating simultaneous corrosion and load according to claim 1, characterized in that: Both ends of the test box (1) are movably connected to box doors (3), the upper end of the support beam (12) is fixedly connected to a first positioning block (14), and a second positioning block (2) is movably installed, and observation windows (17) are fixedly installed on both sides of the test box (1).

10. The reinforced concrete beam testing device for simulating simultaneous corrosion and load according to claim 1, characterized in that: A fan (29) is fixedly installed in the dust storage box (9); an output end of the fan (29) is fixedly connected to a telescopic hose (10); the other end of the telescopic hose (10) is fixedly connected to the test box (1) and extends into the external environment; a first support spring (25) is sleeved on the outside of the T-shaped support rod; one end of the first support spring (25) is fixedly connected to the connection box (30) and the other end is fixedly connected to the connection seat (11).

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