Volume deformation testing device and testing method for ecological concrete

Abstract

The present invention belongs to the technical field of concrete detection, and specifically discloses a volume deformation test device and a test method for ecological concrete. The test device includes a test bench for placing samples, and a spring stop assembly is provided on the test bench, and the spring stop assembly is used to set the limit of the sample placed on the test bench; there are symmetrical telescopic cylinders on the test bench, and the output ends of the two telescopic cylinders are commonly connected to a cross block, and a pressure reducer is provided on the cross block, and the pressure reducer is used to set the pressure detection of the sample; the telescopic cylinder is set on the top surface of the test bench by bolts; the pressure reducer includes a pressure seat, and the pressure seat is set on the side of the cross block close to the test bench. The volume deformation test device of the present invention can scrape off the debris or fragments adhered to the pressure seat, and avoid the uneven surface of the pressure seat causing damage to the sample during the test, so that the sample can be strictly tested according to the test means, and the accuracy of the device detection result can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete detection, and in particular relates to a volume deformation testing device and a testing method for ecological concrete. Background Art

[0002] Porous planting concrete, also known as ecological concrete and greening concrete, can achieve both safety protection and ecological planting. It is a new type of slope protection material that can combine engineering protection and ecological restoration. In order to evaluate the volume deformation performance of ecological concrete under load, including indicators such as compression deformation, elastic modulus and Poisson's ratio, it is necessary to conduct volume deformation tests on ecological concrete. The test results can provide a reliable reference for the use of ecological concrete.

[0003] When using the existing ecological concrete volume deformation test device, a press is generally used to apply pressure to the cast and solidified ecological concrete sample, so that the volume of the sample exhibits different degrees of deformation after being stressed, thereby obtaining test data.

[0004] However, in the actual use process, if the sample is damaged or broken during the detection process due to unqualified production, the broken pieces or slag will easily be engraved or remain on the pressure seat under the action of pressure, resulting in the contact surface between the pressure seat and the sample being uneven and bumpy. When the convex surface of the pressure seat acts on the sample during the test of the next sample, it will cause damage to the sample due to non-testing means. It is difficult for the information collection and analysis modules on the device to determine whether the specific test data is caused by the substandard performance of the ecological concrete sample itself, which makes the device have strong limitations when used, reduces the use effect of the device, and reduces the accuracy of the test results of the device. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a volume deformation testing device and a testing method for ecological concrete, which effectively solves the problems in the above background technology.

[0006] In a first aspect of the present invention, a volume deformation test device for ecological concrete is provided, comprising a test platform for placing samples, the test platform is provided with a spring stop assembly, and the spring stop assembly is used to set a limit position for the sample placed on the test platform; the test platform is symmetrically provided with telescopic cylinders, and the telescopic cylinders are set on the top surface of the test platform by bolts, the output ends of the two telescopic cylinders are commonly connected to a cross block, and the cross block is provided with a pressure reducer, and the pressure reducer is used to set a pressure detection setting for the sample;

[0007] The pressure reducer includes a pressure seat, which is arranged on the side of the cross block close to the inspection table; pressure cylinders are installed at the four end points of the cross block close to the inspection table, and a re-moving cleaning mechanism is arranged on the pressure cylinder, and a scraping bevel is arranged on the re-moving cleaning mechanism. The sharp part of the scraping bevel acts on the side of the pressure seat close to the inspection table and scrapes off the particles adhered to the surface.

[0008] Preferably, the reciprocating cleaning mechanism includes a connecting T-tube arranged on the outer side wall of the pressure cylinder, the end of the connecting T-tube close to the inspection table is closed, and the end of the connecting T-tube away from the inspection table is open, a displacement tooth column is slidably arranged at the opening, an I-shaped square plate is installed on the top of the displacement tooth column, a reciprocating round rod is fixed on the four ends of the I-shaped square plate, a reciprocating base is slid on the reciprocating round rod, and a plurality of reciprocating bases are fixed on the cross square block; a reciprocating spring is sleeved on the reciprocating round rod, one end of the reciprocating spring is connected to the reciprocating base, and the other end is connected to the I-shaped square plate.

[0009] Preferably, the displacement gear column is meshingly connected with a rotating gear, a rotating shaft is installed on the rotating gear, a rotating base plate is symmetrically arranged on the rotating shaft, and the rotating base plate is arranged on a cross square block; rotating disks are installed on both ends of the rotating shaft, rotating columns are arranged on opposite surfaces of the two rotating disks, a double-moving cross block is slid on the rotating column, a guide slide column is symmetrically arranged on one side of the double-moving cross block, a guide base plate is slid on the guide slide column, and the guide base plate is arranged on the cross square block; a U-shaped square rod is installed on the other side of the double-moving cross block, and the two U-shaped square rods are commonly connected to the scraping bevel block; the middle end of the U-shaped square rod is a telescopic rod.

[0010] Preferably, a pressure cylinder is arranged on the moving path of the pressure cylinder, and several pressure cylinders are fixed to the top surface of the inspection platform; a pressure spring is arranged in the pressure cylinder, one end of the pressure spring is connected to the pressure cylinder, and the other end is connected to the inner bottom surface of the pressure cylinder.

[0011] Preferably, a re-movable limit plate is provided at one end of the guide slide column away from the re-movable cross block, and contact pieces are provided on the facing surfaces of the re-movable limit plate and the guide base plate.

[0012] Preferably, the spring stop assembly includes two T-shaped blocks, and the two T-shaped blocks are symmetrical to the top surface of the inspection table; a rectangular square groove is provided on the T-shaped block, and the sample is located in the rectangular square groove; a rotating screw is installed on the opposite surfaces of the two T-shaped blocks, a displacement cross block is threadedly installed on the rotating screw, positioning blocks are installed on both sides of the displacement cross block, a positioning round rod is installed on the positioning block, and the positioning round rod is slidably connected to the T-shaped block; a displacement L-plate is installed on the top surface of the two positioning blocks.

[0013] Preferably, a gas making and slag removing component is also provided on the connecting T-tube; the gas making and slag removing component comprises two bent circular tubes, one ends of the two bent circular tubes are commonly connected to the two sides of the connecting T-tube, and the other ends are commonly connected to an annular pipe, and the annular pipe is sleeved on the pressure cylinder; an air storage L-tube is also installed on the annular pipe, and two L-shaped circular tubes are symmetrically arranged on the air storage L-tube, and a high-pressure nozzle is provided at one end of the L-shaped circular tube facing the sample; valves are symmetrically arranged in the connecting T-tube, and the distance between the two valves is close.

[0014] Preferably, a displacement slide rod is slid on the displacement L-plate, one end of the displacement slide rod is connected to a displacement limit plate, and the other end is connected to a locking cross plate, and a rubber pad is provided on the side of the locking cross plate close to the sample; a displacement spring is sleeved on the displacement slide rod, one end of the displacement spring is connected to the displacement limit plate, and the other end is connected to the displacement L-plate.

[0015] Preferably, a trigger de-collision unit is also provided on the T-shaped block; the trigger de-collision unit includes a de-collision square plate, which is located in a rectangular square groove; a buffer energy-dissipating pad is provided on the side of the de-collision square plate close to the inspection table; auxiliary square columns are symmetrically provided on the side of the de-collision square plate away from the inspection table, and the auxiliary square columns slide on the T-shaped block; an energy-dissipating spring is sleeved on the auxiliary square column, one end of the energy-dissipating spring is connected to the top surface of the T-shaped block, and the other end is connected to an auxiliary limiting plate, and the auxiliary limiting plate is provided at one end of the auxiliary square column close to the cross block.

[0016] The second aspect of the present invention further provides a method for testing the volume deformation of ecological concrete, comprising the following steps:

[0017] Step 1: Operate the spring stop assembly to clamp the sample placed on the inspection table;

[0018] Step 2: Use the telescopic cylinder to move the cross block on its output end toward the inspection table;

[0019] Step 3: Since the pressure seat is arranged on the side of the cross block close to the inspection table, the pressure seat is driven downward by the movement of the cross block to apply pressure to the clamped sample;

[0020] Step 4: Various sensors and instruments are used to monitor the changes of samples under stress, thereby completing the volume deformation test of ecological concrete.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. When the device breaks due to sample breakage during the testing process, the debris or fragments produced by the breakage can be scraped off to avoid damage to the sample caused by the uneven surface of the pressure seat during the test, thereby improving the accuracy of the device's test results; it is worth mentioning that every time the rotating disc rotates one circle, the contact pieces on the opposite surfaces of the compound limit plate and the guide base plate will separate and contact once. When the number of contacts reaches a certain level, the control board can calculate the downward pressure distance of the pressure seat, and then the device can control the start of the two valves based on the information;

[0023] 2. After the valve (upper valve) in the connecting T-tube far away from the test bench is closed, the other valve (lower valve) is opened, so that the gas enters the annular pipe through the bent circular pipe, and then enters the two L-shaped circular pipes through the gas storage L-tube, and is ejected at high pressure through the high-pressure nozzle and acts on the sample, which can blow away impurities or other irrelevant objects adhering to the sample, so as to avoid the existence of these objects affecting the test results of the device on the sample;

[0024] 3. If the pressure reducer breaks due to unqualified samples during the test, the control panel will quickly stop the drive of the telescopic cylinder and control both valves to close. At this time, the gas in the pressure cylinder has no outlet to be discharged, so that the pressure cylinder is further stopped and limited to the current position, avoiding the continued movement of the pressure seat to cause damage to the surrounding people or objects, and also avoiding damage to the device;

[0025] 4. The top surface of the sample can be limited by the impact square plate and the buffer energy dissipation pad. The device can detect samples of different thicknesses or lengths by locking the horizontal plate, reducing the limitations of the device in use;

[0026] 5. When the pressure seat is initially moved, the lower valve is closed and the upper valve is opened, so that the re-moving and cleaning mechanism can work; when the pressure seat is about to contact the sample, the upper valve is closed and the lower valve is opened to make the gas-making and slag-removing component work. At this time, since the middle end of the U-shaped square rod is a telescopic rod, the scraping bevel is controlled to retract to avoid affecting the device's test of the sample; at the same time, by controlling the height of the scraping bevel, it can scrape different positions on the surface of the pressure seat, that is, it can provide scraping forces of different strengths on the surface of the pressure seat, thereby improving the use effect of the device and the re-moving and cleaning mechanism; when the sample breaks during the detection process, both valves are closed, thereby limiting the pressure seat to the current position to avoid further movement and damage to the device, further reducing the limitations of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] In the attached picture:

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the T-shaped block structure of the present invention;

[0031] Figure 3 This is a schematic diagram of the pressure seat structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the rotating disk of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of the rotating screw rod of the present invention;

[0034] Figure 6 This is a cross-sectional view of the connecting T-tube of the present invention;

[0035] Figure 7 This is a schematic diagram of the structure of the scraping oblique block of the present invention;

[0036] Figure 8 This is a schematic diagram of the locking horizontal plate structure of the present invention;

[0037] Fig. 9 It is a cross-sectional view of the annular pipeline of the present invention;

[0038] Fig.10 For the present invention Figure 7 A schematic diagram of the partially enlarged structure at center A;

[0039] In the figure:

[0040] 1. Inspection table; 2. Telescopic cylinder; 3. Cross block; 4. Pressure seat; 5. Pressure cylinder; 6. Scraping oblique block; 7. Connecting T-tube; 8. Displacement tooth column; 9. I-shaped square plate; 10. Double-action round rod; 11. Double-action base; 12. Double-action spring; 13. Rotating gear; 14. Rotating shaft; 15. Rotating base plate; 16. Rotating disk; 17. Rotating column; 18. Double-action horizontal block; 19. Guide slide column; 20. Guide base plate; 21. U-shaped square rod; 22. Pressure cylinder; 23. Pressure spring; 24. Double-action limit plate; 25. Touch Plate; 26, T-shaped block; 27, rectangular square groove; 28, rotating screw; 29, displacement cross block; 30, positioning block; 31, positioning round rod; 32, displacement L plate; 33, bending round tube; 34, annular pipeline; 35, gas storage L tube; 36, L-shaped round tube; 37, high-pressure nozzle; 38, valve; 39, displacement slide rod; 40, displacement limit plate; 41, locking cross plate; 42, rubber pad; 43, displacement spring; 44, impact-absorbing square plate; 45, buffer energy-dissipating pad; 46, auxiliary square column; 47, energy-dissipating spring; 48, auxiliary limit plate. DETAILED DESCRIPTION

[0041] 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.

[0042] like Figures 1 to 10 As shown, the volume deformation testing device of ecological concrete of the present invention comprises a test table 1 for placing samples, and the test table 1 is provided with a spring stop assembly for limiting the sample placed on the test table 1; the test table 1 is symmetrically provided with telescopic cylinders 2, and the telescopic cylinders 2 are arranged on the top surface of the test table 1 by bolts, and the output ends of the two telescopic cylinders 2 are commonly connected to a cross block 3, and the cross block 3 is provided with a pressure reducer, which is used for pressure detection of the sample.

[0043] Among them, the pressure reducer includes a pressure seat 4, which is arranged on the side of the cross block 3 close to the inspection table 1; pressure cylinders 5 are installed at the four end points of the cross block 3 close to the inspection table 1, and a re-moving cleaning mechanism is arranged on the pressure cylinder 5, and a scraping bevel 6 is arranged on the re-moving cleaning mechanism. The sharp part of the scraping bevel 6 acts on the side of the pressure seat 4 close to the inspection table 1 and scrapes off the particles adhered to the surface; a pressure cylinder 22 is arranged on the moving path of the pressure cylinder 5, and several pressure cylinders 22 are fixed on the top surface of the inspection table 1; a pressure spring 23 is arranged in the pressure cylinder 5, one end of the pressure spring 23 is connected to the pressure cylinder 22, and the other end is connected to the inner bottom surface of the pressure cylinder 5.

[0044] The operator clamps the sample placed on the test bench 1 by operating the spring stop assembly. At this time, the telescopic cylinder 2 is started to move the cross block 3 on its output end toward the test bench 1, and then the pressure seat 4 is driven to move toward the clamped sample and contact it, so as to apply pressure to the sample. The external detection device (such as a three-dimensional laser scanning device) is used to detect the different degrees of deformation of the sample's volume after being subjected to force, thereby obtaining the detection data, thereby completing the volume deformation test of the ecological concrete.

[0045] It can be understood that when the cross block 3 drives the pressure seat 4 to move downward, the several pressure cylinders 5 on the cross block 3 are moved within the upper limit of the pressure cylinder 22, which not only sets a limit on the movement of the cross block 3 to prevent the pressure seat 4 from shaking during movement, resulting in a deviation between its moving position and the detection position, but also improves the stability of the pressure seat 4 during movement and the detection accuracy of the device, and also puts several pressure springs 23 in a buffering state to prevent the pressure seat 4 from moving without any resistance (damping) and causing excessive direct contact with the sample, resulting in a large impact force causing damage to nearby objects. At the same time, through these buffering properties, the moving pressure seat 4 can be reset through the above-mentioned buffering setting, so that the telescopic cylinder 2 can stop driving directly after completing the detection of the sample, thereby reducing the energy consumption of the equipment.

[0046] At the same time, it is worth mentioning that when the pressure reducer breaks due to unqualified sample detection, the control panel will quickly stop driving the telescopic cylinder 2 through recognition, and control both valves 38 to close. At this time, the gas in the pressure cylinder 5 has no outlet to discharge, so that the pressure cylinder 5 is further stopped and limited to the current position, avoiding the continued movement of the pressure seat 4 to cause damage to the surrounding people or objects, and also avoiding damage to the device, thereby improving the safety of the device during use and increasing the service life of the device.

[0047] In some embodiments, the reciprocating cleaning mechanism includes a connecting T-tube 7 arranged on the outer wall of the pressure cylinder 5, the end of the connecting T-tube 7 close to the inspection table 1 is closed, and the end of the connecting T-tube 7 away from the inspection table 1 is open, and a displacement tooth column 8 is slidably arranged at the opening, and an I-shaped square plate 9 is installed on the top of the displacement tooth column 8, and a reciprocating round rod 10 is fixed on the four ends of the I-shaped square plate 9, and a reciprocating base 11 is slid on the reciprocating round rod 10, and a plurality of reciprocating bases 11 are fixed on the cross square block 3; a reciprocating spring 12 is sleeved on the reciprocating round rod 10, one end of the reciprocating spring 12 is connected to the reciprocating base 11, and the other end is connected to the I-shaped square plate 9; the displacement tooth column 8 is meshedly connected to a rotating gear 13, and a rotating shaft 14 is installed on the rotating gear 13, and a rotating base plate 15 is symmetrically arranged on the rotating shaft 14, and the rotating base plate 15 is arranged on the cross square block 3;

[0048] Rotating discs 16 are installed on both ends of the rotating shaft 14, and rotating columns 17 are provided on the opposite surfaces of the two rotating discs 16. A double-moving cross block 18 is slidably provided on the rotating column 17, and a guide slide column 19 is symmetrically provided on one side of the double-moving cross block 18. A guide base plate 20 slides on the guide slide column 19, and the guide base plate 20 is arranged on the cross square block 3; a U-shaped square rod 21 is installed on the other side of the double-moving cross block 18, and the two U-shaped square rods 21 are commonly connected to the scraping bevel block 6; the middle end of the U-shaped square rod 21 is a telescopic rod; a double-moving limit plate 24 is provided at one end of the guide slide column 19 away from the double-moving cross block 18, and the facing surfaces of the double-moving limit plate 24 and the guide base plate 20 are provided with contact pieces 25.

[0049] It should be noted that, through the above arrangement, when the pressure cylinder 5 moves at the upper limit position of the pressure cylinder 22, the gas in the pressure cylinder 5 can enter the connecting T-tube 7, and act on the displacement tooth column 8 through the upper valve, so that the displacement tooth column 8 moves, and the I-shaped square plate 9 on it moves at the upper limit position of the compound base 11 through the compound round rod 10, so that the plurality of compound springs 12 are in a buffer state, so that when they are reset, they can assist the gas to return to the pressure cylinder 5; and the moving displacement tooth column 8 meshes with the rotating gear 13 to rotate, and drives the two rotating disks 16 to rotate under the action of the rotating shaft 14, Under the action of the rotating column 17, the reciprocating cross block 18 is moved back and forth relative to the guide base plate 20 through the guide slide column 19, thereby driving the scraping inclined block 6 to move back and forth, so that it continuously moves back and forth on the contact surface between the pressure seat 4 and the sample, and can clean and scrape off the impurities or particles adhering to the pressure seat 4, so as to avoid these impurities causing dents and other damage to the surface of the sample during the pressure process. That is, when the device is broken due to sample breakage during the detection process, the above operation can scrape off the debris or fragments produced by the breakage, so as to avoid the uneven surface of the pressure seat 4 causing damage to the sample during the sample test.

[0050] It should be noted that each time the rotating disk 16 rotates one circle, the contact pieces 25 on the opposite surfaces of the compound limit plate 24 and the guide substrate 20 will separate and contact once. When the number of contacts reaches a certain level, the control panel can calculate the downward pressure distance of the pressure seat 4. At this time, the device can control the start-up of the two valves 38 based on the information.

[0051] In some other embodiments, the above-mentioned elastic stop assembly includes two T-shaped blocks 26, the two T-shaped blocks 26 are symmetrical to the top surface of the inspection table 1, and the T-shaped blocks 26 are provided with rectangular square grooves 27, and the sample is located in the rectangular square grooves 27; a rotating screw 28 is installed on the opposite surface of the two T-shaped blocks 26, and a displacement cross block 29 is threadedly installed on the rotating screw 28, and positioning blocks 30 are installed on both sides of the displacement cross block 29, and a positioning round rod 31 is installed on the positioning block 30, and the positioning rod 31 is installed on the positioning block 30. The positioning round rod 31 is slidably connected with the T-shaped block 26; a displacement L plate 32 is installed on the top surface of the two positioning blocks 30; a displacement slide rod 39 is slid on the displacement L plate 32, one end of the displacement slide rod 39 is connected to the displacement limit plate 40, and the other end is connected to the locking horizontal plate 41, and a rubber pad 42 is provided on the side of the locking horizontal plate 41 close to the sample; a displacement spring 43 is sleeved on the displacement slide rod 39, one end of the displacement spring 43 is connected to the displacement limit plate 40, and the other end is connected to the displacement L plate 32.

[0052] When in use, the two ends of the sample are placed in the rectangular square grooves 27 on the T-shaped block 26, so that the middle end of the sample is in a suspended state, which is convenient for the pressure reducer to test the volume deformation of the sample. At this time, by rotating the rotating screw 28, the displacement cross block 29 connected by the thread is moved to the upper limit position of the T-shaped block 26 through the positioning round rod 31, and the two displacement cross blocks 29 move toward each other, and drive the displacement L plate 32 to move. Under the action of the displacement slide bar 39 and the displacement spring 43, the locking cross plate 41 is driven to move, so that the two locking cross plates 41 move toward each other and contact with the two sides of the sample, so as to clamp the sample and avoid shaking or dislocation caused by excessive pressure when pressurizing the sample, which can improve the stability of the device during detection and the accuracy of the detection result.

[0053] The displacement L plate 32 is moved within the upper limit position of the displacement slide rod 39 by the continued movement of the displacement cross block 29, so that the displacement spring 43 is in a buffering state, which can strengthen the clamping force of the locking cross plate 41 on the sample, and further improve the clamping effect of the sample; at the same time, the friction between the locking cross plate 41 and the sample is increased by the provided rubber pad 42 (the friction is small and does not affect the warping of the two sides of the sample during the detection, and lubricating oil can be provided during the detection and bending of the sample to avoid the difficulty of warping of the two sides of the sample due to the large friction force of the sample clamping), so as to avoid the displacement and other dislocation phenomena of the sample during the test process, and improve the detection result. At the same time, when the sample is tested, it will gradually bend, that is, its center position moves toward the direction of the test table 1, and the two ends of the sample move in the opposite directions mentioned above, thereby reducing the distance between the two ends of the sample, so that the displacement spring 43 in the buffer state is slowly reset, and drives the locking cross plate 41 to reset, so that it is always in contact with the side of the sample, so that no matter what state the sample is in due to the degree of force, the locking cross plate 41 will always limit the sample, thereby improving the above effect and further improving the safety of the device during use, so that the sample can avoid dislocation, displacement, shaking and the like during testing.

[0054] In some embodiments, a gas-making and slag-removing component is also provided on the connecting T-tube 7 .

[0055] The gas-making and slag-removing assembly includes two bent circular tubes 33, one end of the two bent circular tubes 33 is commonly connected to the two sides of the connecting T-tube 7, and the other end is commonly connected to a ring-shaped pipe 34, and the ring-shaped pipe 34 is sleeved on the pressure cylinder 5; a gas storage L-tube 35 is also installed on the ring-shaped pipe 34, and two L-shaped circular tubes 36 are symmetrically arranged on the gas storage L-tube 35, and a high-pressure nozzle 37 is provided at one end of the L-shaped circular tube 36 facing the sample; valves 38 are symmetrically arranged in the connecting T-tube 7, and the distance between the two valves 38 is close.

[0056] When the valve 38 (upper valve) at a point far away from the inspection table 1 in the connecting T-tube 7 is closed and the other valve 38 (lower valve) is opened, the gas enters the annular pipe 34 through the bent circular tube 33, and then enters the two L-shaped circular tubes 36 through the gas storage L-tube 35, and is ejected at high pressure through the high-pressure nozzle 37 and acts on the sample, so as to blow away impurities or other objects irrelevant to the test adhering to the sample, thereby preventing the presence of these objects from affecting the test results of the device on the sample, thereby improving the use effect of the device and the accuracy of the test results; at the same time, it prevents these impurities from adhering to the contact surface between the sample and the pressure seat 4, causing damage to the surface of the pressure seat 4 during the pressure process, avoiding the need for operators to frequently replace or maintain the pressure seat 4, thereby increasing the workload of the operators, and preventing the surface of the pressure seat 4 from being affected by damage (bumps) and affecting the test results.

[0057] It should be noted that when the pressure seat 4 moves initially, the lower valve is closed and the upper valve is opened, so that the re-moving cleaning mechanism works; when the pressure seat 4 is about to contact the sample, the upper valve is closed and the lower valve is opened to make the gas making and slag removing component work. At this time, since the middle end of the U-shaped square rod 21 is a telescopic rod, the scraping bevel 6 is controlled to retract to avoid affecting the device's test of the sample; at the same time, by controlling the height of the scraping bevel 6, it is possible to scrape different positions on the surface of the pressure seat 4, that is, it is possible to provide scraping forces of different strengths on the surface of the pressure seat 4, thereby improving the use effect of the device and the re-moving cleaning mechanism; when the sample breaks during the detection process, both valves are closed, thereby limiting the pressure seat 4 to the current position to avoid further movement and damage to the device, further reducing the limitations of the device during use.

[0058] The T-shaped block 26 of the present embodiment is also provided with a triggering and de-collision unit; the triggering and de-collision unit includes a de-collision square plate 44, which is located in the rectangular square groove 27; a buffering and energy-dissipating pad 45 is provided on the side of the de-collision square plate 44 close to the test bench 1; auxiliary square columns 46 are symmetrically provided on the side of the de-collision square plate 44 away from the test bench 1, and the auxiliary square columns 46 slide on the T-shaped block 26; an energy-dissipating spring 47 is sleeved on the auxiliary square column 46, one end of the energy-dissipating spring 47 is connected to the top surface of the T-shaped block 26, and the other end is connected to an auxiliary limiting plate 48, and the auxiliary limiting plate 48 is provided at one end of the auxiliary square column 46 close to the cross block 3;

[0059] When the sample is bent so that both ends move in a direction away from the test bench 1, that is, move toward the top surface of the rectangular square groove 27, it will contact the buffer energy dissipation pad 45, so that the buffer square plate 44 on it moves relative to the T-shaped block 26 through the auxiliary square column 46, so that the energy dissipation spring 47 is in a buffer state. Through the buffering provided by the energy dissipation spring 47 and the buffer energy dissipation pad 45, when the sample breaks during the detection process, the large impact force will cause the two ends of the sample to quickly tilt away from the test bench 1 and cause damage to the device. However, the buffering provided by the above-mentioned impact force can prevent the impact force generated by the tilted ends of the sample from causing damage to the device and surrounding people or objects, thereby improving the safety of the device during use, avoiding excessive impact force affecting the normal use of the device, and improving the service life of the device. It is worth mentioning that the top surface of the sample can be limited by the buffer square plate 44 and the buffer energy dissipation pad 45, and the locking cross plate 41 enables the device to detect samples of different thicknesses or lengths, reducing the limitations of the device in use.

[0060] The present invention also provides a volume deformation testing method for ecological concrete, comprising the following steps:

[0061] Step 1: operate the spring stop assembly to clamp the sample placed on the inspection table 1;

[0062] Step 2: Use the telescopic cylinder 2 to move the cross block 3 on its output end toward the inspection table 1;

[0063] Step 3: Since the pressure seat 4 is disposed on the side of the cross block 3 close to the test platform 1, the pressure seat 4 is driven to move downward by the movement of the cross block 3 and apply pressure to the clamped sample;

[0064] Step 4: Various sensors and instruments are used to monitor the changes of samples under stress, thereby completing the volume deformation test of ecological concrete.

[0065] 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.

[0066] 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 volume deformation testing device for ecological concrete, comprising a test table (1) for placing a sample, characterized in that: The test bench (1) is provided with a spring stop assembly, which is used to set a limit position for a sample placed on the test bench (1); the test bench (1) is symmetrically provided with telescopic cylinders (2), and the telescopic cylinders (2) are arranged on the top surface of the test bench (1) by bolts, and the output ends of the two telescopic cylinders (2) are commonly connected to a cross block (3), and the cross block (3) is provided with a pressure reducer, which is used to apply pressure to the sample for detection; The pressure reducer comprises a pressure seat (4), which is arranged on the side of the cross block (3) close to the inspection table (1); pressure cylinders (5) are installed at the four end points of the cross block (3) close to the inspection table (1), and a re-moving cleaning mechanism is arranged on the pressure cylinder (5), and a scraping inclined block (6) is arranged on the re-moving cleaning mechanism, and the sharp part of the scraping inclined block (6) acts on the side of the pressure seat (4) close to the inspection table (1) and scrapes off the particles adhered to the surface; The reciprocating cleaning mechanism comprises a connecting T-tube (7) arranged on the outer wall of the pressure cylinder (5), the end of the connecting T-tube (7) close to the inspection platform (1) is closed, and the end of the connecting T-tube (7) away from the inspection platform (1) is open, a displacement tooth column (8) is slidably arranged at the opening, an I-shaped square plate (9) is installed on the top of the displacement tooth column (8), a reciprocating round rod (10) is fixed on the four ends of the I-shaped square plate (9), a reciprocating base (11) is slidably arranged on the reciprocating round rod (10), and a plurality of reciprocating bases (11) are fixed on the cross square block (3); a reciprocating spring (12) is sleeved on the reciprocating round rod (10), one end of the reciprocating spring (12) is connected to the reciprocating base (11), and the other end is connected to the I-shaped square plate (9); The displacement tooth column (8) is meshedly connected with a rotating gear (13), a rotating shaft (14) is mounted on the rotating gear (13), a rotating base plate (15) is symmetrically mounted on the rotating shaft (14), and the rotating base plate (15) is arranged on the cross block (3); rotating disks (16) are mounted on both ends of the rotating shaft (14), rotating columns (17) are arranged on opposite surfaces of the two rotating disks (16), a reciprocating cross block (18) is slidably mounted on the rotating column (17), a guide slide column (19) is symmetrically mounted on one side of the reciprocating cross block (18), a guide base plate (20) is slidably mounted on the guide slide column (19), and the guide base plate (20) is arranged on the cross block (3); a U-shaped square rod (21) is mounted on the other side of the reciprocating cross block (18), and the two U-shaped square rods (21) are commonly connected to the scraping inclined block (6); the middle end of the U-shaped square rod (21) is a telescopic rod; A reciprocating limit plate (24) is provided at one end of the guide slide column (19) away from the reciprocating cross block (18), and contact pieces (25) are provided on the facing surfaces of the reciprocating limit plate (24) and the guide base plate (20); A pressure cylinder (22) is arranged on the moving path of the pressure cylinder (5), and a plurality of pressure cylinders (22) are fixed to the top surface of the inspection platform (1); a pressure spring (23) is arranged inside the pressure cylinder (5), one end of the pressure spring (23) is connected to the pressure cylinder (22), and the other end is connected to the inner bottom surface of the pressure cylinder (5); The connecting T-tube (7) is also provided with a gas-making and slag-removing component; the gas-making and slag-removing component comprises two bent circular tubes (33), one end of the two bent circular tubes (33) is commonly connected to the two sides of the connecting T-tube (7), and the other end is commonly connected to an annular pipe (34), and the annular pipe (34) is sleeved on the pressure cylinder (5); an air storage L-tube (35) is also installed on the annular pipe (34), and two L-shaped circular tubes (36) are symmetrically arranged on the air storage L-tube (35), and a high-pressure nozzle (37) is arranged at one end of the L-shaped circular tube (36) facing the sample; valves (38) are symmetrically arranged in the connecting T-tube (7), and the spacing between the two valves (38) is close.

2. The volume deformation testing device of ecological concrete according to claim 1 is characterized in that: The spring stop assembly comprises two T-shaped blocks (26), the two T-shaped blocks (26) are symmetrical to the top surface of the inspection table (1); a rectangular square groove (27) is provided on the T-shaped blocks (26), and the sample is located in the rectangular square groove (27); a rotating screw (28) is installed on the opposite surface of the two T-shaped blocks (26), a displacement cross block (29) is threadedly installed on the rotating screw (28), a positioning block (30) is installed on both sides of the displacement cross block (29), a positioning round rod (31) is installed on the positioning block (30), and the positioning round rod (31) is slidably connected to the T-shaped blocks (26); and a displacement L plate (32) is installed on the top surface of the two positioning blocks (30).

3. The volume deformation testing device of ecological concrete according to claim 2 is characterized in that: A displacement slide bar (39) is slidably mounted on the displacement L plate (32), one end of the displacement slide bar (39) is connected to a displacement limit plate (40), and the other end is connected to a locking transverse plate (41), and a rubber pad (42) is provided on the side of the locking transverse plate (41) close to the sample; a displacement spring (43) is sleeved on the displacement slide bar (39), one end of the displacement spring (43) is connected to the displacement limit plate (40), and the other end is connected to the displacement L plate (32).

4. The volume deformation testing device of ecological concrete according to claim 2 is characterized in that: The T-shaped block (26) is also provided with a trigger-dissipation unit; the trigger-dissipation unit comprises a dissipation square plate (44), the dissipation square plate (44) is located in a rectangular square groove (27); a buffer energy dissipation pad (45) is provided on the side of the dissipation square plate (44) close to the inspection platform (1); an auxiliary square column (46) is symmetrically provided on the side of the dissipation square plate (44) away from the inspection platform (1), and the auxiliary square column (46) slides on the T-shaped block (26); an energy dissipation spring (47) is sleeved on the auxiliary square column (46), one end of the energy dissipation spring (47) is connected to the top surface of the T-shaped block (26), and the other end is connected to an auxiliary limiting plate (48), and the auxiliary limiting plate (48) is provided on one end of the auxiliary square column (46) close to the cross block (3).

Images