Concrete test block pressure bleeding test device

Abstract

The invention provides a concrete test block pressure bleeding test device, and relates to the field of concrete test equipment, the concrete test block pressure bleeding test device comprises a base, the base is fixedly connected with a rack, the base is provided with a test barrel, a ramming mechanism is arranged above the test barrel, the ramming mechanism comprises a top cover, a ramming rod and a hydraulic cylinder, the hydraulic cylinder is fixedly connected with the rack, and the top cover is fixedly connected with the rack. A top cover is fixedly connected to the output end of the hydraulic cylinder, and a tamping rod is fixedly connected to the bottom of the top cover. According to the concrete test block pressure bleeding test device, through the arrangement of the ramming mechanism, a hydraulic cylinder can drive a ramming rod to move up and down to insert and stamp concrete in a test barrel, manual ramming is not needed, manpower is effectively saved, the ramming effect and ramming efficiency are improved, the ramming uniformity is ensured, and the accuracy of detection data is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of concrete testing equipment, in particular to a concrete test block pressure water seepage testing device. Background Art

[0002] Concrete bleeding is a phenomenon in which water appears on the surface of concrete after it is poured and compacted but before it solidifies. With the development of concrete technology, concrete is developing towards high strength and high performance. High strength and high performance concrete has a low water-binder ratio and a high density. As an important indicator for testing concrete strength, the bleeding rate test plays an irreplaceable and important role in the concrete testing process at the construction site.

[0003] When testing concrete, the mixture needs to be placed in the test tube, and the tamping rod is tamped from the outside to the inside for 25 times. The piston is installed, the air outlet screw is removed, the piston is pressed to the concrete surface, the screw is tightened, the upper cover is closed and the nut is tightened, and the manual pump and the piston tube joint are connected; the manual oil return valve is tightened clockwise, and the manual pump handle is operated to pressurize to 30 MPa pressure gauge reading. At this time, the concrete is under pressure of 3.0 MPa; when the pressure reaches 30 MPa, the water separation valve is immediately opened, and the water separation is introduced into the 1000 ml measuring cylinder. The timing starts, and the water separation volume V1 and V140 are recorded at 10 seconds and 140 seconds as the basic data for calculating the water separation rate; after the data is obtained, the oil return valve is loosened counterclockwise to relieve the pressure, the upper cover and the test tube are removed, and the upper cover and the test tube are placed on the demoulding frame. The upper cover is covered and the nut is tightened. Then the oil return valve is tightened clockwise, and the concrete and the piston are automatically pressed off. The upper cover and the test tube are removed, the oil return valve is loosened, and the piston is manually pressed back, and the test is over.

[0004] However, in the prior art, the tamping process is mostly manual in order to ensure uniform concrete in the sample tube, which is time-consuming and labor-intensive, and the effect is difficult to ensure uniformity, thus affecting the accuracy of the test data. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a concrete test block pressure water seepage test device, which solves the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical scheme: a concrete test block pressure water seepage test device, including a base, a frame fixedly connected to the base, a sample tube is arranged on the base, a tamping mechanism is arranged above the sample tube, the tamping mechanism includes a top cover, a tamping rod, and a hydraulic cylinder, the hydraulic cylinder is fixedly connected to the frame, the top cover is fixedly connected to the output end of the hydraulic cylinder, and the bottom of the top cover is fixedly connected to the tamping rod.

[0009] Preferably, the tamping rods are provided in plurality, and the plurality of tamping rods are evenly distributed on the top cover.

[0010] Preferably, the length of the tamping rod is not greater than the depth of the sample tube.

[0011] Preferably, the base is provided with a uniform rotation mechanism for automatically rotating the concrete in the sample cylinder evenly after each tamping, the uniform rotation mechanism comprising an outer rotating cylinder, a driving assembly, a lifting seat, a bearing seat, an outer sleeve, an inner sleeve, a fixed seat, a spring, a first guide piece, and a second guide piece, the fixed seat is fixedly connected to the base, the top of the fixed seat is fixedly connected to the inner sleeve, the outer sleeve is sleeved on the outside of the inner sleeve, the top of the spring is fixedly connected to the top of the outer sleeve, the bottom of the spring is fixedly connected to the bottom of the inner sleeve, the top of the outer sleeve is rotatably connected to the bearing seat, the top of the bearing seat is fixedly connected to the lifting seat, the top of the lifting seat is provided with a sample cylinder, the outer sleeve is sleeved on the outside of the lifting seat, the outer rotating cylinder is provided with a driving assembly for driving the outer rotating cylinder to rotate, the outer rotating cylinder is rotatably connected to the base, the lifting seat is configured as a cylinder, and a first guide piece and a second guide piece are provided between the outer rotating cylinder and the lifting seat, the number of the first guide piece and the second guide piece are the same, the first guide piece and the second guide piece are spaced apart from each other and are arranged in a lifting manner. The axis of the seat is distributed as a central circumference, the top surface of the first guide piece is provided with a first inclined surface, and the bottom surface of the second guide piece is provided with a second inclined surface matching the first inclined surface, the first guide piece is fixedly connected to the lifting seat, and the second guide piece is fixedly connected to the outer rotating cylinder. When tamping the material, the hydraulic cylinder drives the top cover to descend so that the tamping rod is inserted into the concrete of the sample tube for tamping the material, and at the same time, the hydraulic cylinder drives the lifting seat to descend through the sample tube until the highest point of the lifting seat is lower than the lowest point of the outer rotating cylinder. At this time, the driving component controls the outer rotating cylinder to rotate so that the second guide piece on the inner wall of the outer rotating cylinder moves to just above the first guide piece on the outer wall of the lifting seat. At this time, the hydraulic cylinder contracts and resets, and the lifting seat moves upward under the action of the spring. At this time, under the action of the first inclined surface on the first guide piece and the second inclined surface on the second guide piece, the lifting seat will simultaneously produce a rapid rotation when it is lifted and reset, so that the first guide piece moves between the two second guide pieces, and the lifting seat drives the sample tube to rotate synchronously, so that the concrete inside the sample tube is more uniform when the lifting seat is reset, which can make the tamping effect of the tamping rod better next time.

[0012] Preferably, the first guide piece and the second guide piece are the same in size and shape, which can save mold making costs.

[0013] Preferably, the driving assembly includes a gear ring, a gear, and a servo motor, wherein the gear ring is fixedly connected to the outside of the outer drum, the gear is fixedly connected to the output end of the servo motor, the gear and the gear ring are meshed with each other, and the servo motor is fixedly connected to the base.

[0014] Preferably, it also includes a trigger component for automatically controlling the operation of the drive component, the trigger component including a center rod, a trigger block, a button switch, and a single-chip microcomputer. The center rod is arranged in the outer sleeve, and the top of the center rod is fixedly connected to the outer sleeve, the bottom end of the center rod is fixedly connected with a trigger block, the bottom center of the inner sleeve is fixedly connected with a button switch, and the button switch and the trigger block correspond to each other, the single-chip microcomputer is fixedly connected in the fixing seat, and the button switch and the servo motor are electrically connected to the single-chip microcomputer. When the lifting seat moves to the bottom of the outer rotating drum, the trigger block at the bottom end of the center rod presses the button switch, the button switch generates a signal to the single-chip microcomputer, and the single-chip microcomputer controls the servo motor to rotate the outer rotating drum.

[0015] Preferably, a first permanent magnet is fixedly connected to the top of the lifting seat, a socket corresponding to the first permanent magnet is opened at the bottom of the sample tube, and a second permanent magnet is fixedly connected in the socket, and the first permanent magnet and the second permanent magnet are mutually attractive magnets, so that the sample tube can be detachably connected to the top of the lifting seat.

[0016] (III) Beneficial effects

[0017] The present invention provides a concrete test block pressure water seepage test device, which has the following beneficial effects:

[0018] 1. The concrete test block pressure seepage test device, through the setting of the tamping mechanism, can drive the tamping rod up and down through the hydraulic cylinder to tamp the concrete in the test tube. No manual tamping is required, which effectively saves manpower, improves the tamping effect and efficiency, ensures the uniformity of tamping, and ensures the accuracy of the test data.

[0019] 2. The concrete test block pressure water seepage testing device, through the setting of the uniform rotation mechanism, when tamping the material, the hydraulic cylinder drives the top cover to descend so that the tamping rod is inserted into the concrete of the sample tube for tamping the material, and at the same time, the hydraulic cylinder drives the lifting seat to descend through the sample tube until the highest point of the lifting seat is lower than the lowest point of the outer rotating cylinder. At this time, the driving component controls the outer rotating cylinder to rotate so that the second guide piece on the inner wall of the outer rotating cylinder moves to just above the first guide piece on the outer wall of the lifting seat. At this time, the hydraulic cylinder contracts and resets, and the lifting seat moves upward under the action of the spring. At this time, under the action of the first inclined surface on the first guide piece and the second inclined surface on the second guide piece, the lifting seat will simultaneously produce a rapid rotation when it is lifted and reset, so that the first guide piece moves between the two second guide pieces, and the lifting seat drives the sample tube to rotate synchronously, so that the concrete inside the sample tube is more uniform when the lifting seat is reset, which can make the tamping effect of the tamping rod better next time, thereby ensuring that the concrete in the sample tube is in a relatively uniform state each time the tamping rod descends, thereby ensuring the tamping effect.

[0020] 3. The concrete test block pressure seepage test device, through the setting of the trigger component, when the lifting seat moves to the bottom of the outer rotating drum, the trigger block at the bottom of the center rod presses the button switch, the button switch sends a signal to the single-chip microcomputer, the single-chip microcomputer controls the servo motor to rotate the outer rotating drum, so that the operation of the outer rotating drum can be automatically controlled according to the state of the lifting seat, and the operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the tamping mechanism of the present invention;

[0023] Figure 3 The structure of the uniform rotation mechanism of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 4 The structure of the uniform rotation mechanism of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 5 It is a cross-sectional view of the structure of the uniform rotation mechanism of the present invention;

[0026] Figure 6 For the present invention Figure 5 A magnified view of the structure at center;

[0027] Figure 7 For the present invention Figure 5 Enlarged view of the structure at point B in the middle.

[0028] In the figure: 1 base, 2 frame, 3 hydraulic cylinder, 4 top cover, 5 sample cylinder, 6 tamping rod, 7 lifting seat, 8 first permanent magnet, 9 second permanent magnet, 10 outer rotating cylinder, 11 gear ring, 12 gear, 13 servo motor, 14 outer sleeve, 15 inner sleeve, 16 fixed seat, 17 first guide piece, 18 second guide piece, 19 bearing seat, 20 spring, 21 button switch, 22 single chip microcomputer, 23 center rod, 24 trigger block. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] The embodiment of the present invention provides a concrete test block pressure water seepage test device, such as Figure 1-7 As shown, it includes a base 1, a frame 2 is fixedly connected to the base 1, a sample tube 5 is arranged on the base 1, a tamping mechanism is arranged above the sample tube 5, the tamping mechanism includes a top cover 4, a tamping rod 6, and a hydraulic cylinder 3, the hydraulic cylinder 3 is fixedly connected to the frame 2, the top cover 4 is fixedly connected to the output end of the hydraulic cylinder 3, and the tamping rod 6 is fixedly connected to the bottom of the top cover 4.

[0031] Through the setting of the tamping mechanism, the hydraulic cylinder 3 can drive the tamping rod 6 to move up and down to tamp the concrete in the sample tube 5 without manual tamping, which effectively saves manpower, improves the tamping effect and efficiency, ensures the uniformity of tamping, and ensures the accuracy of the detection data.

[0032] There are multiple tamping rods 6 , and the multiple tamping rods 6 are evenly distributed on the top cover 4 .

[0033] The length of the tamping rod 6 is not greater than the depth of the sample tube 5 .

[0034] In some embodiments, Figure 3-5As shown, the base 1 is provided with a uniform rotating mechanism for automatically rotating the concrete in the sample tube 5 evenly after each tamping, and the uniform rotating mechanism includes an outer rotating cylinder 10, a driving assembly, a lifting seat 7, a bearing seat 19, an outer sleeve 14, an inner sleeve 15, a fixed seat 16, a spring 20, a first guide piece 17, and a second guide piece 18. The fixed seat 16 is fixedly connected to the base 1, the top of the fixed seat 16 is fixedly connected to the inner sleeve 15, the outer sleeve 14 is sleeved on the outside of the inner sleeve 15, the top end of the spring 20 is fixedly connected to the top end of the outer sleeve 14, and the bottom end of the spring 20 is fixedly connected to the bottom end of the inner sleeve 15. The top of the outer sleeve 14 is rotatably connected with a bearing seat 19, and the top of the bearing seat 19 is fixedly connected to the lifting seat 7. The top of the lifting seat 7 is provided with a sample cylinder 5. The outer sleeve of the lifting seat 7 is provided with an outer rotating cylinder 10. The outer rotating cylinder 10 is provided with a driving assembly for driving the outer rotating cylinder 10 to rotate. The outer rotating cylinder 10 is rotatably connected with the base 1. The lifting seat 7 is configured as a cylinder, and a first guide piece 17 and a second guide piece 18 are provided between the outer rotating cylinder 10 and the lifting seat 7. The number of the first guide piece 17 and the second guide piece 18 is the same, and the first guide piece 17 and the second guide piece 18 are spaced apart from each other and are arranged in a lifting manner. The axis of the lowering seat 7 is distributed as a central circumference, the top surface of the first guide piece 17 is provided with a first inclined surface, the bottom surface of the second guide piece 18 is provided with a second inclined surface matching the first inclined surface, the first guide piece 17 is fixedly connected to the lifting seat 7, and the second guide piece 18 is fixedly connected to the outer drum 10. When tamping the material, the hydraulic cylinder 3 drives the top cover 4 to descend so that the tamping rod 6 is inserted into the concrete of the sample tube 5 for tamping the material. At the same time, the hydraulic cylinder 3 drives the lifting seat 7 to descend through the sample tube 5 until the highest point of the lifting seat 7 is lower than the lowest point of the outer drum 10. At this time, the driving component controls the outer drum 10 to rotate so that the inner part of the outer drum 10 is The second guide piece 18 on the wall moves to the top of the first guide piece 17 on the outer wall of the lifting seat 7. At this time, the hydraulic cylinder 3 contracts and resets, and the lifting seat 7 moves upward under the action of the spring 20. At this time, under the action of the first inclined surface on the first guide piece 17 and the second inclined surface on the second guide piece 18, the lifting seat 7 will produce a rapid rotation when it is lifted and reset, so that the first guide piece 17 moves between the two second guide pieces 18, and the lifting seat 7 drives the sample tube 5 to rotate synchronously, so that the concrete inside the sample tube 5 is more uniform when the lifting seat 7 is reset, which can make the tamping effect of the tamping rod 6 better next time.

[0035] By setting the uniform rotation mechanism, when tamping, the hydraulic cylinder 3 drives the top cover 4 to descend so that the tamping rod 6 is inserted into the concrete of the sample tube 5 for tamping. At the same time, the hydraulic cylinder 3 drives the lifting seat 7 to descend through the sample tube 5 until the highest point of the lifting seat 7 is lower than the lowest point of the outer drum 10. At this time, the driving component controls the outer drum 10 to rotate so that the second guide piece 18 on the inner wall of the outer drum 10 moves to the top of the first guide piece 17 on the outer wall of the lifting seat 7. At this time, the hydraulic cylinder 3 contracts and resets, and the lifting seat 7 moves upward under the action of the spring 20. At this time, under the action of the first inclined surface on the first guide piece 17 and the second inclined surface on the second guide piece 18, the lifting seat 7 will produce a rapid rotation when it is lifted and reset, so that the first guide piece 17 moves between the two second guide pieces 18, and the lifting seat 7 drives the sample tube 5 to rotate synchronously, so that the concrete inside the sample tube 5 is more uniform when the lifting seat 7 is reset, which can make the tamping effect of the tamping rod 6 better next time, thereby ensuring that the concrete in the sample tube 5 is in a relatively uniform state each time the tamping rod 6 descends, thereby ensuring the tamping effect.

[0036] The first guide piece 17 and the second guide piece 18 are the same in size and shape, which can save mold making costs.

[0037] The driving assembly includes a gear ring 11, a gear 12, and a servo motor 13. The gear ring 11 is fixedly connected to the outside of the outer drum 10, the gear 12 is fixedly connected to the output end of the servo motor 13, the gear 12 and the gear ring 11 are meshed with each other, and the servo motor 13 is fixedly connected to the base 1.

[0038] In some embodiments, Figure 5-7 As shown, it also includes a trigger component for automatically controlling the operation of the drive component, the trigger component includes a center rod 23, a trigger block 24, a button switch 21, and a single-chip microcomputer 22. The center rod 23 is arranged in the outer sleeve 14, and the top of the center rod 23 is fixedly connected to the outer sleeve 14, the bottom end of the center rod 23 is fixedly connected with the trigger block 24, the bottom center of the inner sleeve 15 is fixedly connected with the button switch 21, and the button switch 21 and the trigger block 24 correspond to each other, the single-chip microcomputer 22 is fixedly connected in the fixing seat 16, and the button switch 21 and the servo motor 13 are electrically connected to the single-chip microcomputer 22. When the lifting seat 7 moves to the bottom of the outer rotating drum 10, the trigger block 24 at the bottom end of the center rod 23 presses the button switch 21, the button switch 21 sends a signal to the single-chip microcomputer 22, and the single-chip microcomputer 22 controls the servo motor 13 to rotate the outer rotating drum 10.

[0039] Through the setting of the trigger component, when the lifting seat 7 moves to the bottom of the outer drum 10, the trigger block 24 at the bottom end of the center rod 23 presses the button switch 21, and the button switch 21 sends a signal to the single-chip microcomputer 22. The single-chip microcomputer 22 controls the servo motor 13 to rotate the outer drum 10, thereby being able to automatically control the operation of the outer drum 10 according to the state of the lifting seat 7, and the operation is more convenient.

[0040] A first permanent magnet 8 is fixedly connected to the top of the lifting seat 7, and a socket corresponding to the first permanent magnet 8 is opened at the bottom of the sample tube 5, and a second permanent magnet 9 is fixedly connected in the socket. The first permanent magnet 8 and the second permanent magnet 9 are mutually attractive magnets, so that the sample tube 5 can be detachably connected to the top of the lifting seat 7.

[0041] Working principle: Through the setting of the tamping mechanism, the hydraulic cylinder 3 can drive the tamping rod 6 to move up and down to tamp the concrete in the sample tube 5. No manual tamping is required, which effectively saves manpower, improves the tamping effect and efficiency, ensures the uniformity of tamping, and ensures the accuracy of the test data.

[0042] 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 concrete test block pressure water seepage test device, comprising a base (1), characterized in that: The base (1) is fixedly connected to a frame (2); a sample tube (5) is arranged on the base (1); a tamping mechanism is arranged above the sample tube (5); the tamping mechanism comprises a top cover (4), a tamping rod (6), and a hydraulic cylinder (3); the hydraulic cylinder (3) is fixedly connected to the frame (2); the top cover (4) is fixedly connected to the output end of the hydraulic cylinder (3); the tamping rod (6) is fixedly connected to the bottom of the top cover (4); the hydraulic cylinder (3) drives the tamping rod (6) to move up and down to tamp the concrete in the sample tube (5).

2. A concrete test block pressure seepage test device according to claim 1, characterized in that: The tamping rods (6) are arranged in plurality, and the plurality of tamping rods (6) are evenly distributed on the top cover (4).

3. A concrete test block pressure seepage test device according to claim 2, characterized in that: The length of the tamping rod (6) is not greater than the depth of the sample tube (5).

4. A concrete test block pressure seepage test device according to claim 3, characterized in that: The base (1) is provided with a uniform rotating mechanism for automatically uniformly rotating the concrete in the sample tube (5) after each tamping. The uniform rotating mechanism comprises an outer rotating tube (10), a driving assembly, a lifting seat (7), a bearing seat (19), an outer sleeve (14), an inner sleeve (15), a fixed seat (16), a spring (20), a first guide piece (17), and a second guide piece (18). The fixed seat (16) is fixedly connected to the base (1), the top of the fixed seat (16) is fixedly connected to the inner sleeve (15), the outer sleeve (14) is sleeved on the outside of the inner sleeve (15), the top end of the spring (20) is fixedly connected to the top end of the inner sleeve (14), and the bottom end of the spring (20) is fixedly connected to the inner bottom end of the inner sleeve (15). The outer end of the outer sleeve (14) is rotatably connected with a bearing seat (19), the top of the bearing seat (19) is fixedly connected to the lifting seat (7), the top of the lifting seat (7) is provided with a sample cylinder (5), the outer sleeve of the lifting seat (7) is provided with an outer rotating cylinder (10), the outer rotating cylinder (10) is provided with a driving assembly for driving the outer rotating cylinder (10) to rotate, the outer rotating cylinder (10) is rotatably connected with the base (1), the lifting seat (7) is configured as a cylinder, and a first guide piece (17) and a second guide piece (18) are provided between the outer rotating cylinder (10) and the lifting seat (7), the number of the first guide piece (17) and the second guide piece (18) is the same, and the number of the first guide piece (17) and the second guide piece (18) is the same. The two guide pieces (18) are arranged at intervals from each other and are distributed in a circle with the axis of the lifting seat (7) as the center. The top surface of the first guide piece (17) is provided with a first inclined surface, and the bottom surface of the second guide piece (18) is provided with a second inclined surface matching the first inclined surface. The first guide piece (17) is fixedly connected to the lifting seat (7), and the second guide piece (18) is fixedly connected to the outer rotating drum (10). When tamping the material, the hydraulic cylinder (3) drives the top cover (4) to descend so that the tamping rod (6) is inserted into the concrete of the sample tube (5) for tamping the material. At the same time, the hydraulic cylinder (3) drives the lifting seat (7) to descend through the sample tube (5) until the highest point of the lifting seat (7) is lower than the lowest point of the outer rotating drum (10). At this time, the driving component controls the outer rotating drum (10) to move downward. ) rotates, so that the second guide piece (18) on the inner wall of the outer rotating cylinder (10) moves to the top of the first guide piece (17) on the outer wall of the lifting seat (7). At this time, the hydraulic cylinder (3) contracts and resets, and the lifting seat (7) moves upward under the action of the spring (20). At this time, under the action of the first inclined surface on the first guide piece (17) and the second inclined surface on the second guide piece (18), the lifting seat (7) will produce a rapid rotation when it is lifted and reset, so that the first guide piece (17) moves to between the two second guide pieces (18). The lifting seat (7) drives the sample cylinder (5) to rotate synchronously, so that the concrete inside the sample cylinder (5) is more uniform when the lifting seat (7) is reset, which can make the tamping effect of the tamping rod (6) better next time.

5. A concrete test block pressure seepage test device according to claim 4, characterized in that: The first guide piece (17) and the second guide piece (18) are of the same size and shape, which can save mold opening costs.

6. A concrete test block pressure water seepage test device according to claim 5, characterized in that: The driving assembly comprises a gear ring (11), a gear (12), and a servo motor (13); the gear ring (11) is fixedly connected to the outside of the outer drum (10); the gear (12) is fixedly connected to the output end of the servo motor (13); the gear (12) and the gear ring (11) are meshed with each other; and the servo motor (13) is fixedly connected to the base (1).

7. A concrete test block pressure seepage test device according to claim 6, characterized in that: The invention also comprises a trigger assembly for automatically controlling the operation of the driving assembly, the trigger assembly comprising a center rod (23), a trigger block (24), a button switch (21), and a single chip computer (22), wherein the center rod (23) is arranged in the outer sleeve (14), and the top end of the center rod (23) is fixedly connected to the outer sleeve (14), the bottom end of the center rod (23) is fixedly connected to the trigger block (24), the bottom center of the inner sleeve (15) is fixedly connected to the button switch (21), and the button switch (21) is fixedly connected to the outer sleeve (14). ) corresponds to the trigger block (24), the single chip computer (22) is fixedly connected in the fixing seat (16), and the button switch (21) and the servo motor (13) are both electrically connected to the single chip computer (22), when the lifting seat (7) moves to the bottom of the outer rotating drum (10), the trigger block (24) at the bottom end of the center rod (23) presses the button switch (21), the button switch (21) generates a signal to the single chip computer (22), and the single chip computer (22) controls the servo motor (13) to rotate the outer rotating drum (10).

8. A concrete test block pressure seepage test device according to claim 7, characterized in that: A first permanent magnet (8) is fixedly connected to the top of the lifting seat (7), a socket corresponding to the first permanent magnet (8) is opened at the bottom of the sample tube (5), and a second permanent magnet (9) is fixedly connected in the socket, and the first permanent magnet (8) and the second permanent magnet (9) are mutually attractive magnets, so that the sample tube (5) can be detachably connected to the top of the lifting seat (7).

Images