Asphalt concrete core wall detection device

Abstract

The present invention discloses a detection device for an asphalt concrete core wall, comprising an end cover, a material storage bin, a water tank, a vacuum pump and a strength testing component. After the asphalt concrete sample is placed in the material storage bin, a variable water head test method can be used to perform anti-seepage detection. At the same time, the material storage bin can also be used as a device for mechanical property testing. Specifically, a clamping member is placed into the material storage bin, and then the sample is placed. The lower end position of the sample is fixed by means of the clamping member, and then the telescopic member is extended to perform transverse loading on the sample. When the sample breaks, corresponding shear strength can be obtained, thereby providing a judgment basis for studying the integrity and construction performance of this batch of concrete.

Description

Technical Field

[0001] The invention relates to the technical field of concrete detection, in particular to a detection device for an asphalt concrete core wall. Background Art

[0002] In the field of water conservancy and hydropower engineering, asphalt concrete core wall is a common dam building structure. After the construction is completed, this part needs to be tested for anti-seepage, structural integrity and some mechanical properties. Conventional testing methods often require one device to perform only one test. The operation of a complete set of equipment is cumbersome and takes up space, which is not conducive to flexible work on the project site. At the same time, anti-seepage testing will produce sewage. These water flows are mixed with impurities such as dust on the concrete specimens, and direct discharge will cause environmental pollution. In addition, conventional anti-seepage testing equipment has a low degree of customization, poor compatibility with specimen size, and the sealing performance of the test chamber cannot be guaranteed, which restricts the improvement of detection accuracy. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides an asphalt concrete core wall detection device with accurate testing and diverse functions.

[0004] Technical solution: To achieve the above-mentioned purpose, the detection device of the asphalt concrete core wall of the present invention includes an end cover, a material storage bin, a water tank, a vacuum pump and a strength testing assembly; the end cover is sealingly arranged on the top of the material storage bin; the end cover is provided with an air outlet and a water inlet; the air outlet corresponds to the vacuum pump; the water inlet is connected to the water tank; a first pressure measuring tube is also provided on the surface of the end cover; a second pressure measuring tube is provided on the material storage bin; the strength testing assembly includes a clamping member and a telescopic member; the clamping member is arranged at the lower end of the material storage bin; the outer side of the clamping member is in contact with the inner wall of the material storage bin, and the inner side is in contact with the concrete sample; the telescopic member is arranged at the upper end of the material storage bin; the movable end of the telescopic member is aligned with the concrete sample placement area inside the material storage bin.

[0005] Furthermore, the strength testing assembly also includes a pressure head; the pressure head is connected and arranged on the movable end of the telescopic component; a V-shaped notch is arranged on the side of the pressure head facing the concrete sample; an arc-shaped groove is opened at the bottom of the V-shaped notch; the length direction of the arc-shaped groove is parallel to the length direction of the concrete sample; and rounded corners are used to transition between the two ends of the arc-shaped groove and the surface of the pressure head.

[0006] Furthermore, an absorption component is arranged between the gas outlet and the vacuum pump; the absorption component includes a solvent chamber, a first delivery pipe and a second delivery pipe; one end of the first delivery pipe is connected to the gas outlet, and the other end extends below the solvent liquid level in the solvent chamber; one end of the second delivery pipe extends to above the solvent liquid level in the solvent chamber, and the other end is connected to the inlet end of the vacuum pump; a flow suppression plate is floatingly arranged inside the solvent chamber; a limiting hole is arranged at the edge of the flow suppression plate; the first delivery pipe passes through the limiting hole and extends to below the liquid level; a flow hole is opened in the area near the limiting hole.

[0007] Furthermore, a slow flow cover is buckled and arranged below the flow hole; the slow flow cover and the flow suppression plate together form a transition chamber; a plurality of notches are circumferentially opened at the edge of the slow flow cover, and the notches connect the inner and outer spaces of the transition chamber.

[0008] Furthermore, a waste liquid collector is arranged below the material storage bin; the waste liquid collector includes a transfer chamber and a filter chamber which are interconnected; the transfer chamber is connected to the bottom of the material storage bin; a filter element is arranged between the transfer chamber and the filter chamber; a partition is movably arranged inside the filter chamber; the edge of the partition is sealed and fitted with the inner wall of the filter chamber; a driving mechanism is also arranged in the filter chamber; the driving mechanism is connected to the partition to drive it away from or close to the filter element; a drain outlet is arranged below the filter chamber; a drain valve is arranged at the drain outlet; when the partition is driven away from the filter element by the driving mechanism, the sewage in the transfer chamber passes through the filter element and enters the drain outlet under the action of the pressure difference.

[0009] Furthermore, the filter cavity is a curve; one side of the partition is hingedly connected to the inner wall of the filter cavity, and the other side flips under the drive of the driving mechanism; the partition is correspondingly fitted with the filter element at the extreme position of the flipping stroke.

[0010] Furthermore, the filter element includes a grille frame; a plurality of holes are arranged on the grille frame; a baffle is arranged on the side of the hole facing upstream; the baffles are arranged in a comb-teeth shape and are cross-distributed in pairs on both sides of the hole; a guide groove is arranged on the surface of the side of the hole facing downstream; and the guide groove is arranged at an incline.

[0011] Furthermore, the end cover and the material storage bin are hingedly connected; an arc-shaped member is arranged between the end cover and the material storage bin; the arc-shaped member includes a fixed sleeve rod, a telescopic rod and a hydraulic pump; the fixed sleeve rod is connected and arranged outside the material storage bin; a sliding cavity is arranged inside the fixed sleeve rod; one end of the telescopic rod is connected to the end cover, and the other end is telescopically embedded in the sliding cavity; the hydraulic pump is connected to the sliding cavity; a pressure relief valve is also arranged on the fixed sleeve rod; the pressure relief valve is connected to the sliding cavity; when the hydraulic pump applies pressure to the inside of the fixed sleeve rod, the telescopic rod is pressed outward, driving the end cover to be sealed and pressed tightly against the material storage bin.

[0012] Furthermore, a buffer assembly is provided at one end of the telescopic rod that penetrates into the sliding cavity; the buffer assembly includes a first pressure-bearing plate, a second pressure-bearing plate and an elastic member; the first pressure-bearing plate and the second pressure-bearing plate are sealed and slidably arranged in the sliding cavity; the elastic member is connected and arranged between the first pressure-bearing plate and the second pressure-bearing plate; the first pressure-bearing plate is connected to the telescopic rod; and the second pressure-bearing plate corresponds to the boost end position of the sliding cavity.

[0013] Furthermore, an annular groove is provided around the top opening of the material storage bin; an annular part is provided on the inner protrusion of the end cover; when the end cover is closed, the annular part fits into the annular groove; an active ring is provided at the bottom of the annular groove; the active ring is magnetically engaged with the annular part; a rubber layer is provided on the outside of the active ring; the cross-section of the annular groove gradually shrinks along the direction from the bottom to the opening; when the active ring is adsorbed on the surface of the annular part, the rubber layer on its outside seals and fits at the opening of the annular groove.

[0014] Beneficial effects: (1) The detection device for the asphalt concrete core wall of the present invention comprises an end cover, a material storage bin, a water tank, a vacuum pump and a strength testing component. After the asphalt concrete sample is placed in the material storage bin, a variable head test method is used to perform anti-seepage detection. At the same time, the material storage bin can also be used as a mechanical property testing device. Specifically, the clamping member is placed inside the material storage bin, and then the sample is placed. The lower end position of the sample is fixed by means of the clamping member. Then the telescopic member is extended to load the sample laterally. When the sample breaks, the corresponding shear strength can be obtained, thereby providing a judgment basis for studying the integrity and construction performance of the batch of concrete; (2) The detection device for the asphalt concrete core wall of the present invention is provided with an absorption component between the air outlet and the vacuum pump. The function of the absorption component is, on the one hand, to allow the airflow to be intercepted by the solvent before entering the vacuum pump, thereby ensuring the healthy and stable operation of the pump body; on the other hand, to be able to The transfer space of the solvent chamber makes the change of the suction intensity more stable, and eliminates the instability caused by the fluctuation of the suction force during the operation of the link pump; (3) The detection device of the asphalt concrete core wall of the present invention is provided with a waste liquid collector below the material storage bin, and the waste liquid collector includes a transfer chamber and a filter chamber that are interconnected; the transfer chamber is connected to the bottom of the material storage bin; a filter element is arranged between the transfer chamber and the filter chamber; a partition is movably arranged inside the filter chamber; the edge of the partition is sealed with the inner wall of the filter chamber; a driving mechanism is also arranged in the filter chamber; the driving mechanism is connected to the partition to drive it away from or close to the filter element; as the partition moves, the space between the partition and the filter element will increase in a short time, and its air pressure will decrease accordingly, so that the water flow in the transfer chamber is accelerated to pass through the filter element under the joint action of the pressure difference and gravity, thereby improving the efficiency of the screening work and not affecting the anti-seepage detection under the premise of ensuring the safety of sewage discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the detection device for the asphalt concrete core wall of the present invention;

[0016] Figure 2 This is a schematic diagram of the connection between the end cover and the material storage bin of the present invention;

[0017] Figure 3 This is a detailed diagram of the connection between the end cover and the material storage bin of the present invention;

[0018] Figure 4 It is a schematic diagram of the strength test assembly structure of the present invention;

[0019] Figure 5 It is a schematic diagram of the overall structure of the arc-shaped member of the present invention;

[0020] Figure 6 is a side view of an absorbent assembly of the present invention;

[0021] Figure 7 It is a front view of the absorbent assembly of the present invention;

[0022] Figure 8 For the present invention Figure 6 Cross-sectional view in the direction shown;

[0023] Fig. 9 For the present invention Figure 7 Cross-sectional view in the direction shown;

[0024] Fig.10 For the present invention Figure 8 Middle partial enlarged picture;

[0025] Fig.11 It is a side view of the waste liquid collector of the present invention;

[0026] Fig.12 It is an axonometric view of the waste liquid collector of the present invention;

[0027] Fig.13 A top view of the waste liquid collector of the present invention;

[0028] Fig.14 It is a schematic diagram of the structure of the waste liquid collector under the partition flipping setting of the present invention;

[0029] Fig.15 It is a schematic diagram of the structure of the filter element of the present invention facing downstream;

[0030] Fig.16 For the present invention Fig.15 Partial enlargement

[0031] Fig.17 It is a schematic diagram of the structure of the filter element of the present invention facing upstream;

[0032] Fig.18 It is a schematic diagram of the internal structure of the arc-shaped member of the present invention;

[0033] Fig.19 It is a schematic diagram of the sealing principle of the movable ring of the present invention.

[0034] The reference numerals in the figures are:

[0035] 1. End cover, 11. Ring, 101. Air outlet, 102. Water inlet, 103. First pressure measuring tube, 2. Material storage bin, 21. Ring groove, 22. Movable ring, 201. Second pressure measuring tube, 3. Water tank, 4. Vacuum pump, 5. Absorption component, 51. Solvent chamber, 52. First conveying pipe, 53. Second conveying pipe, 54. Flow suppression plate, 541. Limiting hole, 542. Flow hole, 543. Slow flow cover, 544. Transition chamber, 545. Notch, 6. Waste liquid collector, 60. Water storage tank, 61. Transfer chamber, 62. Filter chamber, 63. Filter element, 631. Grid frame , 632, hole position, 633, baffle, 634, guide groove, 64, partition, 65, drive mechanism, 66, drain outlet, 67, drain valve, 601, guide pipe, 602, first channel, 603, second channel, 7, arc-shaped member, 71, fixed sleeve rod, 72, telescopic rod, 73, hydraulic pump, 74, buffer assembly, 741, first pressure plate, 742, second pressure plate, 743, elastic member, 701, sliding cavity, 702, pressure relief valve, 8, strength test assembly, 81, clamping member, 82, telescopic member, 83, pressure head, 84, V-shaped notch, 85, arc-shaped groove. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings.

[0037] like Figure 1-5 As shown, the detection device of the asphalt concrete core wall includes an end cover 1, a material storage bin 2, a water tank 3, a vacuum pump 4 and a strength testing assembly 8; the end cover 1 is sealingly arranged on the top of the material storage bin 2; the end cover 1 is provided with an air outlet 101 and a water inlet 102; the air outlet 101 corresponds to the vacuum pump 4; the water inlet 102 is connected to the water tank 3; the surface of the end cover 1 is also provided with a first pressure measuring tube 103; the material storage bin 2 is provided with a second pressure measuring tube 201; the strength testing assembly 8 includes a clamping member 81 and a telescopic component 82; the clamping member 81 is arranged at the lower end of the material storage bin 2; the outer side of the clamping member 81 is in contact with the inner wall of the material storage bin 2, and the inner side is in contact with the concrete sample; the telescopic component 82 is arranged at the upper end of the material storage bin 2; the movable end of the telescopic component 82 is aligned with the concrete sample placement area inside the material storage bin 2.

[0038] When conducting the test, the size of the asphalt concrete sample is first measured and recorded, and then it is placed inside the storage bin 2, and the gap between the sample and the bin wall is filled and sealed with SMA (asphalt mastic); when the end cover 1 is sealed and buckled on the storage bin 2, a closed space can be formed in the bin, thereby providing conditions for anti-permeability detection; then, the vacuum pump 4 extracts the air inside the storage bin 2 through the air outlet 101, and the water tank 3 then fills the storage bin 2 with water through the water inlet 102, and the water pressure at the water inlet position in the end cover 1 is measured by the first pressure measuring tube 103, and the water pressure in the storage bin 2 is measured by the second pressure measuring tube 201; the test adopts the variable head test method, and the water pressure at the water inlet end is controlled at 150-300cm by the first pressure measuring tube 103, the valve on the first pressure measuring tube 103 is closed, and the valve on the second pressure measuring tube 201 is opened. After an interval of 2-4h, the values ​​of the two pressure measuring tubes are recorded again, and the above test records are repeated many times, and finally calculated based on the known permeability coefficient calculation formula:

[0039] Where a is the cross-sectional area of ​​the pressure measuring tube (cm 2 ), L is the seepage diameter, i.e. the sample height (cm), A is the sample cross-sectional area (cm 2 ), t is the seepage time (s), Δh1 is the water level difference between the pressure measuring tube at the water inlet end and the pressure measuring tube at the water outlet end at the beginning of time period t, and Δh1 is the water level difference between the pressure measuring tube at the water inlet end and the pressure measuring tube at the water outlet end at the end of time period t.

[0040] In addition, the material storage bin 2 can also be used as a device for testing mechanical properties. Specifically, the clamping member 81 is placed inside the material storage bin 2, and then the sample is placed. The sample is fixed at the lower end by means of the clamping member 81. Figure 3 The clamping piece 81 shown in the figure is a block structure distributed in a circular direction, which is inserted and matched with the lower end of the sample. In actual use, the clamping pieces 81 of various thicknesses can be matched to be compatible with samples of more sizes; then the telescopic part 82 is extended to load the sample laterally, and the corresponding shear strength can be obtained when it breaks, thereby providing a judgment basis for studying the integrity and construction performance of this batch of concrete.

[0041] The strength testing assembly 8 also includes a pressure head 83; the pressure head 83 is connected to the movable end of the telescopic component 82; a V-shaped notch 84 is provided on the side of the pressure head 83 facing the concrete sample; an arc groove 85 is provided at the bottom of the V-shaped notch 84; the length direction of the arc groove 85 is parallel to the length direction of the concrete sample; both ends of the arc groove 85 and the surface of the pressure head 83 adopt rounded transition.

[0042] As a component that directly contacts the sample, the pressure head 83 can effectively transfer the force of the extension loading of the telescopic component 82 to the concrete sample; the role of the V-shaped notch 84 is to adapt to samples of various thicknesses and improve the adaptability of the device; and the role of the arc groove 85 is to avoid sharp transitions on the V-shaped notch to prevent stress concentration cracking and damage, and at the same time allow the processing of the V-shaped contact surface to adapt to more processing methods such as milling cutters other than wire cutting, which is convenient for tool withdrawal, reduces processing difficulty, and improves preparation efficiency; the arc groove 85 adopts rounded corners at both ends to avoid the sample from getting stuck with the groove edge after breaking again, and uses the rounded transition surface to allow the broken upper end to separate more smoothly.

[0043] like Figure 6-10 As shown, an absorption component 5 is arranged between the gas outlet 101 and the vacuum pump 4; the absorption component 5 includes a solvent chamber 51, a first delivery pipe 52 and a second delivery pipe 53; one end of the first delivery pipe 52 is connected to the gas outlet 101, and the other end extends to below the solvent liquid level in the solvent chamber 51; one end of the second delivery pipe 53 extends to above the solvent liquid level in the solvent chamber 51, and the other end is connected to the inlet end of the vacuum pump 4; a flow suppression plate 54 is floatingly arranged inside the solvent chamber 51; a limiting hole 541 is arranged at the edge of the flow suppression plate 54; the first delivery pipe 52 corresponds to passing through the limiting hole 541 and extends to below the liquid level; a flow hole 542 is opened in the area near the limiting hole 541.

[0044] Because the asphalt concrete sample used in the test was drilled from the concrete core wall, the dust and other impurities on it will be transferred along the air extraction path, and the role of the absorption component 5 is, on the one hand, to allow the airflow to be intercepted by the solvent before entering the vacuum pump 4, ensuring the healthy and stable operation of the pump body, and on the other hand, to use the transfer space of the solvent chamber 53 to make the air extraction intensity change more stable, and to link the instability caused by the fluctuation of the suction force in the operation of the pump. The solvent can be an organic solvent type, which can absorb harmful gases such as benzene released from the concrete while intercepting the dust.

[0045] Specifically, the vacuum pump 4 extracts the air in the space above the solvent liquid surface through the second delivery pipe 53, and the air in the material storage bin enters the solvent through the first delivery pipe 52 under the action of the pressure difference, and the dust and harmful gases it carries are intercepted, and the air part is discharged through the second delivery pipe 53; the function of the flow suppression plate 54 is to keep most of the liquid surface stable when the device as a whole vibrates, to prevent the solvent from shaking and splashing and flowing back into the delivery pipe, thereby improving the working stability of the absorption component 5; in addition, the function of the flow hole 542 is to allow both sides of the flow suppression plate to have a certain gas-liquid exchange capacity, which not only ensures its effect of suppressing the shaking of the liquid surface, but also ensures the normal flow of gas; and by setting the flow hole 542 in the area near the limit hole 541, the airflow that enters the solvent and floats up can pass through the flow suppression plate as soon as possible, thereby ensuring the air extraction efficiency.

[0046] like Fig.10 As shown, a slow flow cover 543 is buckled under the flow hole 542; the slow flow cover 543 and the flow suppression plate 54 together form a transition chamber 544; a plurality of notches 545 are circumferentially opened at the edge of the slow flow cover 543, and the notches 545 connect the inner and outer spaces of the transition chamber 544.

[0047] Through the slow flow cover 543, the solvent needs to pass through the notch 545 and then the flow hole 542 to pass through the flow suppression plate during shaking, forming a tortuous path, which can further increase the difficulty of liquid flow and enhance the liquid level suppression effect.

[0048] like Figure 11-14 As shown, a waste liquid collector 6 is arranged below the material storage bin 2; the waste liquid collector 6 includes a transfer chamber 61 and a filter chamber 62 which are interconnected; the transfer chamber 61 is connected to the bottom of the material storage bin 2; a filter element 63 is arranged between the transfer chamber 61 and the filter chamber 62; a partition 64 is movably arranged inside the filter chamber 62; the edge of the partition 64 is sealed and fitted with the inner wall of the filter chamber 62; a driving mechanism 65 is also arranged in the filter chamber 62; the driving mechanism 65 is connected to the partition 64 to drive it away from or close to the filter element 63; a drain outlet 66 is arranged below the filter chamber 62; a drain valve 67 is arranged at the drain outlet 66; when the partition 64 is driven away from the filter element 63 by the driving mechanism 65, the sewage in the transfer chamber 61 passes through the filter element 63 and enters the drain outlet 66 under the action of the pressure difference.

[0049] from Fig.12It can be seen that the filter chamber 62 is connected to the water storage tank 60 through the first channel 602 below, and the drain port 66 and the drain valve 67 are specifically arranged on the water storage tank 60; the water in the silo 2 enters the transfer chamber 61 through the guide pipe 601 under the action of gravity; when the partition 64 moves, the drain valve 67 is closed, and the valves of the first channel 602 and the second channel 603 are also closed; as the partition 64 moves, the space between the partition and the filter element 63 will increase in a short time, and its air pressure will decrease accordingly , so that the water flow in the transfer chamber 61 is accelerated to pass through the filter element 63 under the combined action of pressure difference and gravity, thereby improving the efficiency of the screening work; after the partition 64 completes the action of moving away from the filter element 63, the drain valve 67 is opened to guide the filtered water flow to fall into the water storage tank 60 to be discharged uniformly; and the second channel 603 can connect the transfer chamber 61 and the chamber that is always closed by the partition 64 for installing the driving mechanism 65 with the water storage tank 60, so that the sewage can be directly discharged when maintaining the cleaning device.

[0050] The filter chamber 62 is a curve; one side of the partition 64 is hingedly connected to the inner wall of the filter chamber 62, and the other side is flipped under the drive of the driving mechanism 65; the partition 64 is correspondingly fitted with the filter element 63 at the extreme position of the flipping stroke.

[0051] Fig.13 The partition in the embodiment is driven by a driving mechanism 65 in the form of a connecting rod mechanism to achieve reciprocating piston movement. Fig.14 The partition in the middle is hinged on the left and swings on the right. The right inner wall of the filter chamber in the figure is also set to an arc structure accordingly. This unilateral rotation and swinging style can avoid the phenomenon of uneven force on the edge of the partition piston when it moves, thereby improving the stability of the activity.

[0052] like Figure 15-17 As shown, the filter element 63 includes a grille frame 631; a plurality of holes 632 are arranged on the grille frame 631; a baffle 633 is arranged on the upstream side of the hole 632; the baffle 633 is arranged in a comb-teeth shape and is cross-distributed in pairs on both sides of the hole 632; a guide groove 634 is arranged on the surface of the downstream side of the hole 632; the guide groove 634 is inclined.

[0053] The baffle bars 633 arranged in a comb-tooth shape can use the cross gaps to achieve a screening effect, thereby intercepting some larger particle-sized impurities in the water flow. In actual manufacturing, the density of the baffle bars 633 can also be changed according to the specific requirements of the interception particle size, thereby using multiple sets of detachable grid frames 631 to achieve adaptation to variables such as sample material.

[0054] The end cover 1 and the material storage bin 2 are hingedly connected; an arc-shaped member 7 is provided between the end cover 1 and the material storage bin 2; Fig.18 As shown, the arc-shaped member 7 includes a fixed sleeve rod 71, a telescopic rod 72 and a hydraulic pump 73; the fixed sleeve rod 71 is connected and arranged outside the material storage bin 2; a sliding cavity 701 is arranged inside the fixed sleeve rod 71; one end of the telescopic rod 72 is connected to the end cover 1, and the other end is telescopically embedded in the sliding cavity 701; the hydraulic pump 73 is connected to the sliding cavity 701; a pressure relief valve 702 is also arranged on the fixed sleeve rod 71; the pressure relief valve 702 is connected to the sliding cavity 701; when the hydraulic pump applies pressure to the inside of the fixed sleeve rod 71, the telescopic rod 72 is pressed to extend outward, driving the end cover 1 and the material storage bin 2 to be sealed and pressed tightly.

[0055] When the hydraulic pump 73 increases the pressure inside the sliding chamber 701, the telescopic rod 72 is pushed out accordingly, thereby sealing and pressing the end cover 1 against the opening of the material storage bin 2; the function of the pressure relief valve 702 is to release the pressurized medium inside the sliding chamber 701, thereby making the end cover 1 lose its pressing force and facilitate opening.

[0056] A buffer assembly 74 is provided at one end of the telescopic rod 72 that penetrates into the sliding cavity 701; the buffer assembly 74 includes a first pressure plate 741, a second pressure plate 742 and an elastic member 743; the first pressure plate 741 and the second pressure plate 742 are arranged in a sealed and sliding manner in the sliding cavity 701; the elastic member 743 is connected and arranged between the first pressure plate 741 and the second pressure plate 742; the first pressure plate 741 is connected to the telescopic rod 72; the second pressure plate 742 corresponds to the boost end position of the sliding cavity 701.

[0057] The function of the buffer assembly 74 is that when the hydraulic pump 73 is pressurized instantaneously, the deformation buffering capacity of the elastic member 743 can be utilized to smoothly increase the pressure between the first pressure plate 741 and the second pressure plate 742, thereby reducing the impact and vibration of the telescopic rod 72 and extending the service life of the components.

[0058] like Figure 4 and Fig.19 As shown, an annular groove 21 is provided around the top opening of the material storage bin 2; an annular member 11 is provided on the inner protrusion of the end cover 1; when the end cover 1 is closed, the annular member 11 is fitted and embedded in the annular groove 21; an active ring 22 is provided at the bottom of the annular groove 21; the active ring 22 is magnetically fitted with the annular member 11; a rubber layer is provided on the outside of the active ring 22; the cross-section of the annular groove 21 gradually shrinks along the direction from the bottom to the opening; when the active ring 22 is adsorbed on the surface of the annular member 11, the rubber layer on its outside is sealed and fitted at the opening of the annular groove 21.

[0059] On the basis of the sealed inlay of the annular groove 21 and the annular member 11, the magnetic attraction is utilized so that when the end cover 1 is in the closed position, the movable ring 22 will be moved upward by the magnetic attraction, and the rubber layer thereof and the contraction wall surface of the annular groove 21 are fitted and closed, thereby completing two seals and significantly improving the sealing effect. The vacuum degree inside the silo 2 is higher and the test results are more accurate.

[0060] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0061] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A detection device for asphalt concrete core wall, characterized in that: The invention comprises an end cover (1), a material storage bin (2), a water tank (3), a vacuum pump (4) and a strength testing assembly (8); the end cover (1) is sealingly arranged on the top of the material storage bin (2); an air outlet (101) and a water inlet (102) are arranged on the end cover (1); the air outlet (101) corresponds to the vacuum pump (4); the water inlet (102) is connected to the water tank (3); a first pressure measuring tube (103) is also arranged on the surface of the end cover (1); the material storage bin (2) is provided with a second pressure measuring tube (201); the strength testing assembly (8) comprises a clamping member (81) and a telescopic member (82); the clamping member (81) is arranged at the lower end of the material storage bin (2); the outer side of the clamping member (81) is in contact with the inner wall of the material storage bin (2), and the inner side is in contact with the concrete sample; the telescopic member (82) is arranged at the upper end of the material storage bin (2); the movable end of the telescopic member (82) is aligned with the concrete sample placement area inside the material storage bin (2) A waste liquid collector (6) is provided below the material storage bin (2); the waste liquid collector (6) comprises a transfer chamber (61) and a filter chamber (62) which are interconnected; the transfer chamber (61) is connected to the bottom of the material storage bin (2); a filter element (63) is provided between the transfer chamber (61) and the filter chamber (62); a partition (64) is movably provided inside the filter chamber (62); the edge of the partition (64) is sealed and fitted with the inner wall of the filter chamber (62); the filter chamber (62) ) is also provided with a driving mechanism (65); the driving mechanism (65) is connected to the partition (64) to drive it away from or towards the filter element (63); a drain port (66) is provided below the filter chamber (62); a drain valve (67) is provided at the drain port (66); when the partition (64) is driven away from the filter element (63) by the driving mechanism (65), the sewage in the transfer chamber (61) passes through the filter element (63) under the action of the pressure difference and enters the drain port (66).

2. The asphalt concrete core wall detection device according to claim 1, characterized in that: The strength testing assembly (8) further comprises a pressure head (83); the pressure head (83) is connected to the movable end of the telescopic component (82); a V-shaped notch (84) is provided on the side of the pressure head (83) facing the concrete sample; an arc-shaped groove (85) is provided at the bottom of the V-shaped notch (84); the length direction of the arc-shaped groove (85) is parallel to the length direction of the concrete sample; and rounded corners are used to transition between the two ends of the arc-shaped groove (85) and the surface of the pressure head (83).

3. The asphalt concrete core wall detection device according to claim 1, characterized in that: An absorption component (5) is arranged between the gas outlet (101) and the vacuum pump (4); the absorption component (5) comprises a solvent chamber (51), a first delivery pipe (52) and a second delivery pipe (53); one end of the first delivery pipe (52) is connected to the gas outlet (101), and the other end thereof extends below the solvent liquid surface in the solvent chamber (51); one end of the second delivery pipe (53) extends to above the solvent liquid surface in the solvent chamber (51), and the other end thereof is connected to the inlet end of the vacuum pump (4); a flow suppressor plate (54) is arranged floating inside the solvent chamber (51); a limiting hole (541) is arranged at the edge of the flow suppressor plate (54); the first delivery pipe (52) passes through the limiting hole (541) and extends to below the liquid surface; a flow hole (542) is arranged in the area near the limiting hole (541).

4. The asphalt concrete core wall detection device according to claim 3, characterized in that: A slow-flow cover (543) is provided below the flow hole (542) in a buckled manner; the slow-flow cover (543) and the flow suppression plate (54) together form a transition chamber (544); a plurality of notches (545) are provided in a circumferential direction at the edge of the slow-flow cover (543); the notches (545) connect the inner and outer spaces of the transition chamber (544).

5. The asphalt concrete core wall detection device according to claim 4, characterized in that: The filter chamber (62) is a curve; one side of the partition plate (64) is hingedly connected to the inner wall of the filter chamber (62), and the other side thereof is driven by the driving mechanism (65) to flip; the partition plate (64) is correspondingly fitted with the filter element (63) at the extreme position of the flipping stroke.

6. The asphalt concrete core wall detection device according to claim 5, characterized in that: The filter element (63) comprises a grille frame (631); a plurality of holes (632) are provided on the grille frame (631); a retaining bar (633) is provided on the side of the hole (632) facing upstream; the retaining bars (633) are arranged in a comb-teeth shape and are cross-distributed in pairs on both sides of the hole (632); a guide groove (634) is provided on the surface of the side of the hole (632) facing downstream; and the guide groove (634) is arranged obliquely.

7. The asphalt concrete core wall detection device according to claim 1, characterized in that: The end cover (1) and the material storage bin (2) are hingedly connected; an arc-shaped member (7) is provided between the end cover (1) and the material storage bin (2); the arc-shaped member (7) comprises a fixed sleeve rod (71), a telescopic rod (72) and a hydraulic pump (73); the fixed sleeve rod (71) is connected to the outside of the material storage bin (2); a sliding cavity (701) is provided in the fixed sleeve rod (71); one end of the telescopic rod (72) is connected to the end cover (1), The other end is telescopically embedded in the sliding cavity (701); the hydraulic pump (73) is connected to the sliding cavity (701); a pressure relief valve (702) is also provided on the fixed sleeve rod (71); the pressure relief valve (702) is connected to the sliding cavity (701); when the hydraulic pump (73) applies pressure to the interior of the fixed sleeve rod (71), the telescopic rod (72) is pressed to extend outward, driving the end cover (1) and the material storage bin (2) to be sealed and pressed tightly.

8. The asphalt concrete core wall detection device according to claim 7, characterized in that: A buffer assembly (74) is provided at one end of the telescopic rod (72) that penetrates into the sliding cavity (701); the buffer assembly (74) comprises a first pressure-bearing plate (741), a second pressure-bearing plate (742) and an elastic member (743); the first pressure-bearing plate (741) and the second pressure-bearing plate (742) are arranged in a sealed manner and slidably in the sliding cavity (701); the elastic member (743) is connected and arranged between the first pressure-bearing plate (741) and the second pressure-bearing plate (742); the first pressure-bearing plate (741) is connected to the telescopic rod (72); and the second pressure-bearing plate (742) corresponds to the position of the boost end of the sliding cavity (701).

9. The asphalt concrete core wall detection device according to claim 1, characterized in that: An annular groove (21) is arranged around the top opening of the material storage bin (2); an annular member (11) is arranged on the inner protrusion of the end cover (1); when the end cover (1) is closed, the annular member (11) fits into the annular groove (21); an active ring (22) is arranged at the bottom of the annular groove (21); the active ring (22) and the annular member (11) are magnetically engaged; a rubber layer is arranged on the outside of the active ring (22); the cross section of the annular groove (21) gradually shrinks along the direction from the bottom to the opening; when the active ring (22) is adsorbed on the surface of the annular member (11), the rubber layer on the outside thereof is sealed and fitted at the opening of the annular groove (21).

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