CN112986103A - Concrete water permeability coefficient detection device - Google Patents
Concrete water permeability coefficient detection device Download PDFInfo
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- CN112986103A CN112986103A CN202110492092.XA CN202110492092A CN112986103A CN 112986103 A CN112986103 A CN 112986103A CN 202110492092 A CN202110492092 A CN 202110492092A CN 112986103 A CN112986103 A CN 112986103A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
Abstract
The invention relates to the technical field of concrete auxiliary devices, in particular to a concrete permeability coefficient detection device which is simple in structure, convenient to install and seal a concrete test block, simplified in operation steps and improved in accuracy of detection results; the method comprises the following steps: the water tank is hollow, and the top of the water tank is provided with a water inlet and a water inlet pipe for containing water; the positioning water cylinder is installed at the top of the water tank, the positioning water cylinder is hollow and is provided with an opening at the top, the side surface of the positioning water cylinder is communicated with the water outlet, and a lifting mechanism and a speed multiplying rotating mechanism are arranged in the positioning water cylinder; the measuring cylinder is placed at the top of the water tank and is used for containing water flowing out of the water outlet; the cylinder is provided with scales, the side surface of the cylinder is communicated with the overflow port, and the cylinder is arranged on the output end of the speed doubling rotating mechanism; the lifting mechanism is used for providing power for the speed-multiplying rotating mechanism, the output end of the lifting mechanism is provided with a lifting plate used for placing the concrete test block, a through hole is formed in the lifting plate, and at least four supporting frames used for supporting the concrete test block are installed in the through hole.
Description
Technical Field
The invention relates to the technical field of concrete auxiliary devices, in particular to a concrete water permeability coefficient detection device.
Background
Pervious concrete is also called porous concrete, sand-free concrete and pervious terrace. The porous light concrete is prepared by mixing aggregate, cement and water, does not contain fine aggregate, and has the characteristics of air permeability, water permeability and light weight because a thin layer of cement slurry is coated on the surface of coarse aggregate and is mutually bonded to form a honeycomb structure with uniformly distributed pores. The water permeability coefficient is an important index for evaluating the water permeability of the pervious concrete.
The authorization notice number is: CN205620278U discloses a concrete permeability coefficient measuring device, which comprises a water tank, a positioning water cylinder, a water outlet, a measuring cylinder, a telescopic permeable support, a transparent cylinder with scales, an overflow port, an upper water collecting port, a water pump and a water pipe, wherein the positioning water cylinder is positioned on the water tank, the side surface of the positioning water cylinder is provided with the water outlet, and the measuring cylinder is correspondingly arranged below the water outlet; the telescopic permeable support is positioned in the positioning water cylinder and used for placing a concrete test block; the transparent cylinder with scales is sleeved on the concrete test block, the side surface of the transparent cylinder is provided with an overflow port, and the water tank is provided with an upper water collecting port at the position corresponding to the overflow port; the water tank is connected with a water pump, and the water pump is connected with a water pipe to supply water to the transparent cylinder with scales. The device can measure the variable water head water permeability coefficient of concrete, can measure the constant water head water permeability coefficient again, and the dismouting is simple simultaneously, and actual operation is convenient, water cyclic utilization, and is energy-concerving and environment-protective.
The above-described device clearly suffers from the following drawbacks: the test block is inconvenient to install, the operation steps are complicated, and the accuracy of the detection result is influenced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a concrete permeability coefficient detection device which is simple in structure, convenient to install and seal a concrete test block, capable of simplifying operation steps and capable of improving accuracy of detection results.
The invention relates to a concrete permeability coefficient detection device, which comprises:
the water tank is hollow, and the top of the water tank is provided with a water inlet and a water inlet pipe for containing water;
the positioning water cylinder is installed at the top of the water tank, the positioning water cylinder is hollow and is provided with an opening at the top, the side surface of the positioning water cylinder is communicated with the water outlet, and a lifting mechanism and a speed multiplying rotating mechanism are arranged in the positioning water cylinder;
the measuring cylinder is placed at the top of the water tank and is used for containing water flowing out of the water outlet;
the cylinder is provided with scales, the side surface of the cylinder is communicated with the overflow port, and the cylinder is arranged on the output end of the speed doubling rotating mechanism;
the lifting mechanism is used for providing power for the speed-multiplying rotating mechanism, a lifting plate for placing concrete test blocks is arranged at the output end of the lifting mechanism, through holes are formed in the lifting plate, and at least four support frames for supporting the concrete test blocks are arranged in the through holes;
when the lifting mechanism acts, the stroke of the cylinder is larger than that of the lifting plate, and the cylinder is driven to rotate so as to increase the space for installing the concrete test block; the connecting plate is provided with a limiting groove and a guide groove, the limiting groove is vertical, and the guide groove comprises a vertical section and an arc-shaped section, wherein the vertical section is vertical, and the arc-shaped section takes the top end of the limiting groove as the circle center.
Preferably, the installation is used for injecing the spacing ring of concrete test block position in the drum, and the drum inner wall is provided with the ring channel, and the ring channel is located the spacing ring below, and ring channel department installs the sheet rubber that is the form of stretching tightly, forms airtight space between ring channel and the sheet rubber, and airtight space intercommunication hose, release valve and pressure sensor, hose other end intercommunication have the air pump of installing on the water tank.
Preferably, install the water pump in the water tank, water pump output end intercommunication first water pipe, first water pipe output end installation rotary joint, rotary joint output end installation second water pipe, the second water pipe output is directly over the drum, rotary joint passes through first support mounting on the water tank, sets up the second support on the water tank, and the second support rotates with the second water pipe to be connected.
Preferably, the lifting mechanism further comprises a screw and a guide rod, the positioning water drum is fixedly connected with the two fixing plates, the screw is rotatably installed on the two fixing plates, the motor is installed at the top of the screw, the screw is in threaded connection with a driving plate connected with the lifting plate, and the guide rod penetrates through the driving plate.
Preferably, the speed-multiplying rotating mechanism further comprises a cross rod connected with the lifting plate, a rotating shaft is rotatably arranged on the cross rod, and a gear is arranged on the rotating shaft;
the positioning water tank is characterized by further comprising a first rack and a second rack, wherein the first rack and the second rack are both meshed with the gear, the first rack is fixed in the positioning water tank, a vertical plate with a sliding groove is fixedly installed in the positioning water tank, a track is installed in the sliding groove in a sliding mode, and the track is connected with the second rack;
the second rack top shaft is connected with the actuating lever, rotates on the actuating lever and installs the drive shaft, and the drive shaft passes the guide way, drive shaft other end fixedly connected with link, link one end with the drum is connected, and spacing axle is installed to the link other end, and spacing axle passes the spacing groove.
Preferably, a third support is installed on the drive plate, a roller is installed at the other end of the third support, a transition rod is installed on the second water pipe, an L-shaped drive frame is installed on the transition rod, the bottom of the drive frame is inclined, a swing arm is installed on the second water pipe, a support plate is installed on the second support, and a reset spring is installed between the swing arm and the support plate.
Preferably, a support ring is installed at the top of the water tank, and the measuring cylinder is arranged inside the support ring.
Preferably, the water inlet is connected with an end cover in a shaft mode.
Preferably, at least four universal wheels are installed at the bottom of the water tank.
Compared with the prior art, the invention has the beneficial effects that: the concrete test block is arranged on the support frame at the through hole of the lifting plate, the cylinder is sleeved on the concrete test block, the lifting mechanism acts to enable the lifting plate, the support frame, the concrete test block, the cylinder and the like to move upwards, the stroke of the cylinder is larger than that of the lifting plate and the concrete test block under the action of the double-speed rotating mechanism, a distance difference is generated between the lifting plate and the cylinder, namely the cylinder moves upwards relative to the concrete test block to expose the concrete test block, then the cylinder continuously rises to rotate, the space at the position of the concrete test block is further increased, and the concrete test block is more convenient to take out; after the concrete test block is taken out, on the support frame on the lifter plate is arranged in to the concrete test block that will await measuring, reverse operation elevating system made lifter plate and concrete test block etc. move downwards afterwards, the in-process that moves downwards, the drum at first rotates to vertical state on, the drum is inside its with the concrete test block cover for concrete test block downstream afterwards, for prior art's mode, this device can get the concrete test block fast and put, has improved detection efficiency.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top right front side perspective view of FIG. 1 of the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 2;
FIG. 4 is a partial enlarged view of portion B of FIG. 2;
FIG. 5 is a top perspective view of the middle portion of FIG. 1 of the present invention;
FIG. 6 is a partial enlarged view of portion A of FIG. 5;
FIG. 7 is a schematic view of the connection of the concealed water tank of FIG. 1;
FIG. 8 is a top left front perspective view of FIG. 7;
FIG. 9 is a partial enlarged view of portion A of FIG. 8;
FIG. 10 is a top right front side perspective view of FIG. 7;
FIG. 11 is a cross-sectional view of the cylinder, stop collar, hose, annular groove and rubber sheet;
fig. 12 is a view showing the cylinder and the connecting plate hidden in fig. 9.
In the drawings, the reference numbers: 1. a water tank; 2. positioning the water cylinder; 3. a water outlet; 4. a lifting mechanism; 5. a speed multiplying rotating mechanism; 6. a measuring cylinder; 7. a cylinder; 8. an overflow port; 401. a lifting plate; 402. a support frame; 403. a lead screw; 404. a guide bar; 405. a fixing plate; 406. a motor; 407. a drive plate; 501. a connecting plate; 502. a limiting groove; 503. a guide groove; 5031. a vertical section; 5032. a circular arc section; 504. a cross bar; 505. a rotating shaft; 506. a gear; 507. a first rack; 508. a second rack; 509. a vertical plate; 510. a track; 511. a drive rod; 512. a drive shaft; 513. a connecting frame; 514. a limiting shaft; 9. a limiting ring; 10. an annular groove; 11. a rubber sheet; 12. a hose; 13. a gas release valve; 14. a pressure sensor; 15. an air pump; 16. a first water pipe; 17. a rotary joint; 18. a second water pipe; 19. a first bracket; 20. a second bracket; 21. a third support; 22. a roller; 23. a driving frame; 24. swinging arms; 25. a support plate; 26. a return spring; 27. a support ring; 28. and (4) end covers.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 12, a concrete water permeability coefficient detection apparatus according to the present invention includes:
the water tank 1 is hollow, and the top of the water tank is provided with a water inlet and a water inlet pipe for containing water;
the positioning water cylinder 2 is arranged at the top of the water tank 1, the positioning water cylinder 2 is hollow and has an opening at the top, the side surface is communicated with the water outlet 3, and a lifting mechanism 4 and a speed-multiplying rotating mechanism 5 are arranged in the positioning water cylinder 2;
the measuring cylinder 6 is placed at the top of the water tank 1 and is used for containing water flowing out from the water outlet 3;
the cylinder 7 is provided with scales, the side surface of the cylinder is communicated with the overflow port 8, and the cylinder 7 is arranged at the output end of the speed doubling rotating mechanism 5;
the lifting mechanism 4 is used for providing power for the speed multiplying rotating mechanism 5, a lifting plate 401 for placing concrete test blocks is arranged at the output end of the lifting mechanism 4, a through hole is formed in the lifting plate 401, and at least four support frames 402 for supporting the concrete test blocks are arranged in the through hole;
a speed multiplying rotating mechanism 5, when the lifting mechanism 4 acts, the stroke of the cylinder 7 is larger than that of the lifting plate 401, and the cylinder 7 is driven to rotate so as to increase the space for installing the concrete test block; the connecting plate 501 is provided with a limiting groove 502 and a guide groove 503, the limiting groove 502 is vertical, and the guide groove 503 comprises a vertical segment 5031 and an arc segment 5032 with the top end of the limiting groove 502 as the center.
In this embodiment, the concrete test block is placed on the support frame 402 at the through hole of the lifting plate 401, the cylinder 7 is sleeved on the concrete test block, the lifting mechanism 4 acts to enable the lifting plate 401, the support frame 402, the concrete test block, the cylinder 7 and the like to move upwards, and under the action of the double-speed rotating mechanism 5, the stroke of the cylinder 7 is larger than that of the lifting plate 401 and the concrete test block, so that a distance difference is generated between the two, that is, the cylinder 7 moves upwards relative to the concrete test block to expose the concrete test block, and then the cylinder 7 continuously rises to rotate, so that the space at the position of the concrete test block is further increased, and the concrete test block is more convenient to take out; after the concrete test block is taken out, on arranging the concrete test block to be detected in the support frame 402 on the lifting plate 401, the lifting mechanism 4 is reversely operated to make the lifting plate 401 and the concrete test block move downwards, in the downward movement process, the cylinder 7 firstly rotates to the vertical state, then the cylinder 7 downwards moves relative to the concrete test block to sleeve the concrete test block in the cylinder 7, and compared with the mode of the prior art, the device can rapidly take and place the concrete test block, and the detection efficiency is improved.
Further, as shown in fig. 2 and 12, a limiting ring 9 for limiting the position of the concrete test block is installed in the cylinder 7, an annular groove 10 is formed in the inner wall of the cylinder 7, the annular groove 10 is located below the limiting ring 9, a tight rubber sheet 11 is installed at the annular groove 10, a closed space is formed between the annular groove 10 and the rubber sheet 11, the closed space is communicated with a hose 12, an air release valve 13 and a pressure sensor 14, and the other end of the hose 12 is communicated with an air pump 15 installed on the water tank 1.
In this embodiment, after the concrete test block is located inside the cylinder 7, the air pump 15 is started to make air enter the sealed space between the annular groove 10 and the rubber sheet 11 along the hose 12, and the rubber sheet 11 is continuously inflated to make the rubber sheet 11 expand, the inflated rubber sheet 11 stops inflating after filling up the gap between the concrete test block and the cylinder 7, and the pressure in the sealed space is displayed through the pressure sensor 14 to control the start and stop of the air pump 15, compared with the mode of filling wax in the prior art, the method has the advantages of quicker sealing and higher sealing performance;
after the concrete permeability coefficient test is finished, firstly operating the air escape valve 13 to discharge the air in the closed space, recovering the rubber sheet 11, and then operating the lifting mechanism 4 to move the cylinder 7 upwards to prevent the cylinder 7 and the concrete test block from moving together;
the hose 12 is made of a fluororesin, and the hose 12 needs to be provided with a necessary length so as not to interfere with the lifting and rotating of the cylinder 7.
Further, as shown in fig. 1, 2, 3, 7 and 10, a water pump is installed in the water tank 1, an output end of the water pump is communicated with the first water pipe 16, an output end of the first water pipe 16 is provided with a rotary joint 17, an output end of the rotary joint 17 is provided with a second water pipe 18, an output end of the second water pipe 18 is positioned right above the cylinder 7, the rotary joint 17 is installed on the water tank 1 through a first support 19, a second support 20 is arranged on the water tank 1, and the second support 20 is rotatably connected with the second water pipe 18.
In this embodiment, after being pumped by the water pump, the water in the water tank 1 flows into the cylinder 7 through the first water pipe 16, the rotary joint 17 and the second water pipe 18, and then the water is added into the cylinder 7, so as to perform the test.
Further, as shown in fig. 10, the lifting mechanism 4 further includes a screw 403 and a guide rod 404, two fixing plates 405 are fixedly connected to the positioning water drum 2, the screw 403 is rotatably mounted on the two fixing plates 405, a motor 406 is mounted on the top of the screw 403, a driving plate 407 connected to the lifting plate 401 is connected to the screw 403 in a threaded manner, and the guide rod 404 penetrates through the driving plate 407.
In this embodiment, after the motor 406 is powered on, the screw 403 is driven to rotate, and since the screw 403 is in threaded connection with the driving plate 407, and the driving plate 407 cannot rotate along with the screw 403 under the cooperation of the screw 403 and the guide rod 404, the motor 406 is powered on to drive the driving plate 407 and the lifting plate 401 to change in height.
Further, as shown in fig. 1, 2, 4, 5, 6, 7, 8, 9 and 12, the double-speed rotating mechanism 5 further includes a cross bar 504 connected to the lifting plate 401, a rotating shaft 505 is rotatably mounted on the cross bar 504, and a gear 506 is mounted on the rotating shaft 505;
the water tank;
the top shaft of the second rack 508 is connected with a driving rod 511, the driving rod 511 is rotatably provided with a driving shaft 512, the driving shaft 512 penetrates through the guide groove 503, the other end of the driving shaft 512 is fixedly connected with a connecting frame 513, one end of the connecting frame 513 is connected with the cylinder 7, the other end of the connecting frame 513 is provided with a limiting shaft 514, and the limiting shaft 514 penetrates through the limiting groove 502.
In this embodiment, after the motor 406 is powered on, the lifting plate 401, the cross bar 504, the rotating shaft 505 and the gear 506 are driven to move upwards, and in the process that the gear 506 moves upwards, because the first rack 507 is fixed in the positioning water drum 2, the gear 506 rotates, and because the second rack 508 and the rail 510 move along the sliding groove on the vertical plate 509, the rotating gear 506 enables the second rack 508 and parts thereon to have a larger stroke relative to the cross bar 504 and the lifting plate 401, so that a displacement difference is generated when the concrete test block and the cylinder 7 rise together, and the concrete test block is convenient to take and place;
during the ascending process of the second rack 508, the driving rod 511 and the driving shaft 512, firstly, the driving shaft 512 moves along the vertical segment 5031 of the guiding groove 503 and the limiting shaft 514 moves along the limiting groove 502, and the connecting frame 513 and the cylinder 7 move vertically upwards because the limiting groove 502 and the vertical segment 5031 are vertical;
when the limiting shaft 514 moves to the top of the limiting groove 502, the driving shaft 512 moves to the intersection of the vertical segment 5031 and the circular arc segment 5032, and the circular arc segment 5032 takes the limiting groove 502 as the center of a circle, so that the second rack 508 moving upwards continuously moves the driving shaft 512 along the circular arc segment 5032, and the connecting frame 513 and the cylinder 7 both rotate around the limiting shaft 514 at the moment, in the process, the angle of the driving rod 511 changes adaptively, the bottom end of the cylinder 7 is further far away from the concrete test block, the space is larger, and the taking and placing are more convenient.
Further, as shown in fig. 1, 2, 5, 7, 10 and 3, a third bracket 21 is mounted on the driving plate 407, a roller 22 is mounted at the other end of the third bracket 21, a transition rod is mounted on the second water pipe 18, an L-shaped driving frame 23 is mounted on the transition rod, the bottom of the driving frame 23 is inclined, a swing arm 24 is mounted on the second water pipe 18, a supporting plate 25 is mounted on the second bracket 20, and a return spring 26 is mounted between the swing arm 24 and the supporting plate 25.
In this embodiment, when the driving plate 407 rises, the third bracket 21 and the roller 22 are driven to rise, and since the bottom end of the driving frame 23 is inclined, the roller 22 moving upward rotates the second water pipe 18, the driving frame 23 and the swing arm 24, the return spring 26 is compressed, so that the water outlet end of the second water pipe 18 rotates away from the position right above the cylinder 7, and does not prevent the cylinder 7 from rising and rotating, and when the roller 22 moves to the vertical position of the driving frame 23, the second water pipe 18 does not rotate any more;
when the driving plate 407 descends, the water outlet end of the second water tube 18 rotates to a position right above the cylinder 7 again under the elastic force of the return spring 26.
Further, as shown in fig. 2, a support ring 27 is installed on the top of the water tank 1, and the measuring cylinder 6 is placed inside the support ring 27.
In this embodiment, through the support ring 27 that sets up, when graduated flask 6 receives the water, arrange graduated flask 6 in support ring 27, prevent that it from taking place to rock, stability when improving the water receiving.
Further, as shown in fig. 2, an end cap 28 is connected to the water inlet.
In this embodiment, when the device is in a non-testing state, the end cap 28 is closed, so that the end cap 28 shields the water inlet, and impurities cannot enter the water tank 1.
Further, as shown in fig. 1, at least four universal wheels are installed at the bottom of the water tank 1.
In this embodiment, the universal wheels are provided, thereby improving the overall mobility of the device.
The concrete water permeability coefficient determination method using the device comprises the following specific steps:
s1, manufacturing a concrete test block, wherein the size of the concrete test block can be lapped on the support frame 402 and is slightly smaller than the size of the rubber sheet 11;
s2, placing the concrete test block into a vacuum device, vacuumizing to 90 +/-1 KPa, keeping for 30min, adding enough water to enable the water level to be 10cm higher than the concrete test block while keeping the vacuum, stopping vacuumizing, soaking for 20min, and then taking out the concrete test block and placing the concrete test block on the support frame 402 on the lifting plate 401;
s3, operating the motor 406 to descend the driving plate 407 and the like, sleeving the cylinder 7 on the concrete test block, stopping the motor 406, starting the air pump 15 to expand the rubber sheet 11 to fill the gap between the concrete block and the cylinder 7, so that water in the cylinder 7 can only flow into the positioning water cylinder 2 through the concrete test block;
s4, injecting water into the water tank 1 through the water inlet pipe, starting the water pump to enable the water to flow into the cylinder 7 along the second water outlet pipe, adjusting the water speed through a valve on the second water pipe 18, placing the measuring cylinder 6 into the support ring 27, enabling the water to flow into the positioning water cylinder 2 through the pores in the concrete test block, and enabling the water to overflow from the water outlet 3 after reaching a certain height;
s5, observing and recording the water quantity injected into the cylinder 7 and the water quantity overflowing from the water outlet 3, starting a stopwatch to time when the water quantity and the water quantity are in a balanced state, recording the temperature at the moment, and reading the reading of the measuring cylinder 6;
s6, after a period of time, the test is finished, and the reading of the stopwatch and the reading of the measuring cylinder 6 are recorded;
the calculation formula of the water permeability coefficient is as follows:
in the formula:
KT-water permeability coefficient at water temperature T (mm/s);
q-volume of water (ml) in graduated cylinder 6 over the test period;
d, the thickness (mm) of the permeable concrete test piece;
A-Water permeable surface area (cm) of concrete test piece2)；
h is the height of a water head, namely the height difference (cm) between the water outlet 3 and the overflow port;
t-test time(s).
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a concrete water permeability coefficient detection device which characterized in that includes:
the water tank (1) is hollow, and the top of the water tank is provided with a water inlet and a water inlet pipe for containing water; the positioning water cylinder (2) is arranged at the top of the water tank (1), the positioning water cylinder (2) is hollow and is provided with an opening at the top, the side surface of the positioning water cylinder is communicated with the water outlet (3), and a lifting mechanism (4) and a speed-multiplying rotating mechanism (5) are arranged in the positioning water cylinder (2); the measuring cylinder (6) is placed at the top of the water tank (1) and is used for containing water flowing out from the water outlet (3); the cylinder (7) is provided with scales, the side surface of the cylinder is communicated with the overflow port (8), and the cylinder (7) is arranged on the output end of the speed doubling rotating mechanism (5); the lifting mechanism (4) is used for providing power for the speed multiplying rotating mechanism (5), the output end of the lifting mechanism (4) is provided with a lifting plate (401) for placing concrete test blocks, a through hole is formed in the lifting plate (401), and at least four support frames (402) for supporting the concrete test blocks are arranged in the through hole; the speed multiplying rotating mechanism (5) is used for increasing the space for installing the concrete test block by driving the cylinder (7) to rotate when the lifting mechanism (4) acts and the stroke of the cylinder (7) is larger than that of the lifting plate (401); the connecting plate comprises a connecting plate (501), wherein a limiting groove (502) and a guide groove (503) are formed in the connecting plate (501), the limiting groove (502) is vertical, and the guide groove (503) comprises a vertical section (5031) which is vertical and an arc-shaped section (5032) which takes the top end of the limiting groove (502) as the center of a circle.
2. The concrete permeability coefficient detection device of claim 1, wherein a limiting ring (9) for limiting the position of the concrete test block is installed in the cylinder (7), an annular groove (10) is formed in the inner wall of the cylinder (7), the annular groove (10) is located below the limiting ring (9), a tight rubber sheet (11) is installed at the annular groove (10), a closed space is formed between the annular groove (10) and the rubber sheet (11), the closed space is communicated with a hose (12), an air release valve (13) and a pressure sensor (14), and the other end of the hose (12) is communicated with an air pump (15) installed on the water tank (1).
3. The concrete water permeability coefficient detection device according to claim 2, wherein a water pump is installed in the water tank (1), the output end of the water pump is communicated with the first water pipe (16), the output end of the first water pipe (16) is provided with a rotary joint (17), the output end of the rotary joint (17) is provided with the second water pipe (18), the output end of the second water pipe (18) is positioned right above the cylinder (7), the rotary joint (17) is installed on the water tank (1) through a first support (19), the water tank (1) is provided with a second support (20), and the second support (20) is rotatably connected with the second water pipe (18).
4. The concrete permeability coefficient detection device of claim 3, wherein the lifting mechanism (4) further comprises a screw (403) and a guide rod (404), two fixing plates (405) are fixedly connected to the positioning water drum (2), the screw (403) is rotatably mounted on the two fixing plates (405), a motor (406) is mounted at the top of the screw (403), a driving plate (407) connected with the lifting plate (401) is connected to the screw (403) in a threaded manner, and the guide rod (404) penetrates through the driving plate (407).
5. The concrete water permeability coefficient detection device according to claim 4, wherein the speed multiplying rotating mechanism (5) further comprises a cross bar (504) connected with the lifting plate (401), a rotating shaft (505) is rotatably mounted on the cross bar (504), and a gear (506) is mounted on the rotating shaft (505); the water tank is characterized by further comprising a first rack (507) and a second rack (508), wherein the first rack (507) and the second rack (508) are meshed with the gear (506), the first rack (507) is fixed in the positioning water tank (2), a vertical plate (509) with a sliding groove is fixedly installed in the positioning water tank (2), a track (510) is installed in the sliding groove in a sliding mode, and the track (510) is connected with the second rack (508); second rack (508) top shaft coupling has drive lever (511), rotates on drive lever (511) and installs drive shaft (512), and guide way (503) are passed in drive shaft (512), and drive shaft (512) other end fixedly connected with link (513), link (513) one end with drum (7) are connected, and spacing axle (514) are installed to the link (513) other end, and spacing axle (514) pass spacing groove (502).
6. The concrete permeability coefficient detection device of claim 3, wherein a third support (21) is installed on the driving plate (407), a roller (22) is installed at the other end of the third support (21), a transition rod is installed on the second water pipe (18), an L-shaped driving frame (23) is installed on the transition rod, the bottom of the driving frame (23) is inclined, a swing arm (24) is installed on the second water pipe (18), a supporting plate (25) is installed on the second support (20), and a return spring (26) is installed between the swing arm (24) and the supporting plate (25).
7. The concrete water permeability coefficient detection device as claimed in claim 1, wherein a support ring (27) is installed on the top of the water tank (1), and the measuring cylinder (6) is placed inside the support ring (27).
8. The concrete permeability coefficient detection device of claim 1, wherein the water inlet is connected with an end cover (28) in a shaft way.
9. The concrete permeability coefficient detection device according to claim 1, wherein at least four universal wheels are installed at the bottom of the water tank (1).
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| CN202110492092.XA CN112986103B (en) | 2021-05-06 | 2021-05-06 | Concrete water permeability coefficient detection device |
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| CN114047100A (en) * | 2021-10-20 | 2022-02-15 | 长沙理工大学 | Test device for measuring rising height and rate of porous medium capillary water |
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