Concrete hardness detection device for water conservancy construction acceptance

Abstract

The invention relates to the technical field of detection devices, in particular to a concrete hardness detection device for water conservancy construction acceptance, which comprises a drill cylinder, an inner cylinder, a cooling assembly and a driving source. When the concrete is cut by the first ring teeth and the second ring teeth, the surface smoothness of the aggregate is greater than that of cement mortar, and the second cooling unit can increase the cooling efficiency of the outer surface of the sample core when the smoothness of the outer surface of the sample core is increased, so that the probability of distortion of the surface of the sample core is reduced; further, the detection accuracy of the sample core is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and particularly to a concrete hardness detection device for water conservancy construction acceptance. Background Art

[0002] In the work of water conservancy construction acceptance, the detection of concrete hardness is a key link in evaluating the project quality. The existing detection of concrete hardness is to detect the sample core by the method of core drilling. Since concrete is composed of aggregate and cement mortar, due to the different thermal conductivity coefficients and thermal expansion coefficients of the two, during the core drilling process, within a certain thickness on the surface of the sample core, microcracks are likely to occur between the aggregate and the cement mortar. The appearance of these microcracks changes the original structural integrity of the concrete, making the sample core unable to truly reflect the original hardness state of the concrete, and thus interfering with the accuracy of the subsequent hardness detection results. Further, during the process of core drilling, coolant is used to cool the drill. However, the coolant will remain on the surface of the sample core and even penetrate into the deep layer of the sample core. The presence of the coolant changes the humidity and other conditions of the sample core, affects its physical properties, reduces the authenticity of the sample core, and results in the subsequent detection being unable to accurately reflect the hardness of the concrete in the actual project, seriously affecting the detection accuracy. In addition, the existing drilling method will generate a large amount of frictional heat, and a large amount of frictional heat will be transferred to the surface of the sample core. Excessive temperature will cause changes in the microstructure of the concrete material, such as causing internal water evaporation, crystal structure change, etc., resulting in sample distortion and being unable to represent the true performance of the concrete under normal use conditions, thereby affecting the detection results of the hardness of the sample core. Summary of the Invention

[0003] The present invention provides a concrete hardness detection device for water conservancy construction acceptance to solve the problem of low accuracy of the existing concrete hardness detection.

[0004] The following technical scheme is adopted for a concrete hardness detection device for water conservancy construction acceptance of the present invention: A concrete hardness detection device for water conservancy construction acceptance includes a drill barrel, an inner barrel, a temperature reduction assembly and a drive source.

[0005] The drill pipe is vertically arranged; a first ring tooth and a second ring tooth are arranged on the drill pipe, the first ring tooth is arranged at the lower end of the drill pipe, the second ring tooth is arranged on the inner side wall of the drill pipe, and the first ring tooth is arranged below the second ring tooth; the inner pipe is coaxially and rotatably sleeved inside the drill pipe; the cooling assembly includes a first cooling unit and a second cooling unit, the first cooling unit is used to cool the first ring tooth and the second ring tooth, the second cooling unit is used to cool the inner side wall of the sample core, and moreover, the second cooling unit can also increase the cooling efficiency when the smoothness of the outer surface of the sample core increases; the driving source can drive the drill pipe and the inner pipe to rotate around their own axes simultaneously, and the rotation speed of the inner pipe is less than that of the drill pipe.

[0006] Furthermore, the cooling assembly further includes a detection component and a control component, the detection component is used to detect the smoothness of the outer surface of the sample core, and the control component is used to control the higher the cooling efficiency of the second cooling unit when the smoothness of the outer surface of the sample core is higher.

[0007] Furthermore, the second cooling unit includes a first conduit, a second conduit, a first liquid supply pump and a first liquid storage tank, the first conduit and the second conduit are arranged inside the side wall of the inner pipe, a cooling groove is arranged on the inner side wall of the inner pipe, the cooling groove is vertically arranged, the opening of the cooling groove faces the axis of the inner pipe, and both the first conduit and the second conduit are communicated with the cooling groove; the first liquid storage tank is fixedly connected to the inner pipe, a coolant is stored inside the first liquid storage tank, and the second conduit is communicated with the inside of the first liquid storage tank; the first liquid supply pump is fixedly connected to the inner pipe, the first liquid supply pump has a first liquid inlet and a first liquid outlet, the first liquid inlet is communicated with the first liquid storage tank, and the first liquid outlet is communicated with the first conduit.

[0008] Furthermore, the detection component includes a vacuum pipe, a vacuum pump, a suction cup and a corrugated pipe, the vacuum pipe is arranged inside the side wall of the inner pipe, the vacuum pump is fixedly connected to the inner pipe, and the vacuum pump is communicated with the vacuum pipe; the corrugated pipe extends along the radial direction of the inner pipe, one end of the corrugated pipe is communicated with the vacuum pipe; the corrugated pipe can stretch, and the corrugated pipe is in the shortest length state initially; one end of the suction cup is coaxially and fixedly connected to the corrugated pipe, and the other end of the suction cup extends into the inner pipe.

[0009] Further, the control assembly includes a first control bladder, a second control bladder, and a control tube. The first control bladder is disposed inside the sidewall of the inner cylinder. An extrusion block is fixedly provided at the end of the bellows. When the bellows extends, the extrusion block can extrude the first control bladder. The second control bladder is disposed at the end of the first conduit communicating with the cooling tank. The control tube connects the first control bladder and the second control bladder. Initially, the volumes of the first control bladder and the second control bladder are set to be the same, and the extrusion block abuts against the first control bladder.

[0010] Further, a return spring is provided inside the bellows. In the initial state, the return spring is in its original length state, and the return spring can generate a force that drives the bellows to shorten when the bellows extends.

[0011] Further, the first cooling unit includes a cooling tube, a delivery tube, a return tube, a second liquid supply pump, and a second liquid storage tank. The delivery tube and the return tube are both disposed inside the sidewall of the drill cylinder. The cooling tube is arranged in a ring shape. The delivery tube and the return tube are both connected to the cooling tube. The second liquid supply pump has a second liquid inlet and a second liquid outlet. The second liquid supply pump is fixedly connected to the drill cylinder. The second liquid storage tank is fixedly connected to the drill cylinder. The second liquid inlet communicates with the inside of the second liquid storage tank. The return tube is connected to the second liquid storage tank. The second liquid outlet is connected to the delivery tube.

[0012] Further, the drive source includes a drive motor and a differential member. The drive motor is used to drive the inner cylinder to rotate. The differential member is used to accelerate the rotation of the drill cylinder when the inner cylinder rotates.

[0013] Further, the differential member includes a first gear, a second gear, and a gear ring. The first gear is coaxially and fixedly connected to the inner cylinder. The gear ring is coaxially and fixedly connected to the drill cylinder. The second gear meshes with the first gear and the gear ring simultaneously.

[0014] Further, a transmission frame is coaxially and fixedly provided on the inner cylinder. The transmission frame penetrates through the upper end of the drill cylinder. The power output shaft of the drive motor is fixedly connected to the transmission frame. A transmission rod extending in the radial direction of the inner cylinder is fixedly provided on the transmission frame. The transmission rod is rotatably connected to the second gear.

[0015] The beneficial effects of the present invention are as follows: a concrete hardness detection device for water conservancy construction acceptance of the present invention comprises a drill barrel, an inner barrel, a cooling component and a driving source. When detecting the hardness of concrete, a detection point is first determined, and core sampling is performed at the position of the detection point. When core sampling of concrete is required, the driving source drives the drill barrel, and during the rotation of the drill barrel, the first ring teeth and the second ring teeth crush the concrete. By coaxially rotating the inner barrel and arranging it inside the drill barrel, and the rotation speed of the inner barrel is less than the rotation speed of the drill barrel, the inner side wall of the inner barrel can directly contact the concrete sample core. When the rotation speed of the inner barrel is less than the rotation speed of the drill barrel, the heat generated by the concrete sample core is reduced; the first cooling unit in the cooling component cools the first ring teeth and the second ring teeth. The cooling is performed to prevent the first ring teeth and the second ring teeth from high-temperature cracking when crushing concrete. The second cooling unit in the cooling assembly reduces the temperature of the outer surface of the sample core to prevent the outer surface temperature of the sample core from being too high, thereby reducing the change in the microstructure of the sample core. Furthermore, since concrete is composed of aggregate and cement mortar, the thermal conductivity coefficient and thermal expansion coefficient of the aggregate and the cement mortar are different. When the first ring teeth and the second ring teeth cut the concrete, the surface smoothness of the aggregate is greater than the surface smoothness of the cement mortar. The second cooling unit can increase the cooling efficiency of the outer surface of the sample core when the smoothness of the outer surface of the sample core increases, thereby reducing the probability of distortion of the surface of the sample core, thereby improving the accuracy of sample core detection. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 1 A schematic diagram of the structure of a concrete hardness detection device for water conservancy construction acceptance provided by an embodiment of the present invention; Figure 2 A schematic diagram of the cross-section structure of a concrete hardness detection device for water conservancy construction acceptance provided by an embodiment of the present invention; Figure 3 A front view of a concrete hardness detection device for water conservancy construction acceptance provided by an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a control component in a concrete hardness detection device for water conservancy construction acceptance provided by an embodiment of the present invention; Figure 5 for Figure 2 A partial enlarged view of the middle A; Figure 6 forFigure 2 Partial enlarged view at position B in Figure 7 is Figure 3 Cross-sectional view in the C-C direction in Figure 8 is Figure 3 Cross-sectional view in the D-D direction in Figure 9 is Figure 3 Cross-sectional view in the E-E direction in Figure 10 is Figure 6 Partial enlarged view at position F in

[0018] In the figure: 110, drill pipe; 111, first ring gear; 112, second ring gear; 120, inner tube; 210, first conduit; 220, second conduit; 230, first liquid supply pump; 240, first liquid storage tank; 250, cooling tank; 310, vacuum tube; 320, vacuum pump; 330, suction cup; 340, bellows; 350, liquid collection tank; 360, extrusion block; 410, first control bladder; 420, second control bladder; 430, control pipe; 510, cooling pipe; 520, delivery pipe; 530, return pipe; 540, second liquid supply pump; 550, second liquid storage tank; 610, drive motor; 620, first gear; 630, second gear; 640, gear ring; 650, transmission frame; 660, transmission rod. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] The serial numbers assigned to the components in this article itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And the "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0021] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0022] As Figures 1 to 10 shown, a concrete hardness detection device for water conservancy construction acceptance provided by an embodiment of the present invention includes a drill cylinder 110, an inner cylinder 120, a cooling component and a driving source.

[0023] The drill cylinder 110 is vertically arranged, the interior of the drill cylinder 110 is hollow, the drill cylinder 110 is provided with a first ring gear 111 and a second ring gear 112. The first ring gear 111 is arranged at the lower end of the drill cylinder 110, the second ring gear 112 is arranged on the inner side wall of the drill cylinder 110, and the first ring gear 111 is arranged below the second ring gear 112. When the drill cylinder 110 rotates, the first ring gear 111 and the second ring gear 112 jointly break the concrete, and the core sample of the concrete can enter the interior of the drill cylinder 110.

[0024] The inner cylinder 120 is coaxially and rotatably sleeved inside the drill cylinder 110. The diameter of the outer side wall of the inner cylinder 120 is equal to the diameter of the inner side wall of the drill cylinder 110. By arranging the second ring gear 112 inside the drill cylinder 110, it is ensured that the concrete core sample can smoothly enter the interior of the inner cylinder 120, and the outer surface of the core sample can directly contact the inner side wall of the inner cylinder 120.

[0025] The temperature reduction component includes a first temperature reduction unit and a second temperature reduction unit. The first temperature reduction unit is used to cool the first ring gear 111 and the second ring gear 112. When the drill barrel 110 rotates, the first ring gear 111 and the second ring gear 112 directly break the concrete. When the first ring gear 111 and the second ring gear 112 move relative to the concrete, their temperatures will rise. To prevent the first ring gear 111 and the second ring gear 112 from cracking due to high temperature during concrete crushing, the first temperature reduction unit is used to cool the first ring gear 111 and the second ring gear 112. The second temperature reduction unit is used to cool the inner wall of the sample core. Moreover, the second temperature reduction unit can also increase the temperature reduction efficiency when the smoothness of the outer surface of the sample core increases. Specifically, the second temperature reduction unit can prevent the temperature of the outer surface of the sample core from being too high, thereby reducing the change in the microstructure of the sample core. In addition, since concrete is composed of aggregate and cement mortar, and the thermal conductivity and thermal expansion coefficient of the aggregate and cement mortar are different. When the first ring gear 111 and the second ring gear 112 cut the concrete, the surface smoothness of the aggregate is greater than that of the cement mortar. The second temperature reduction unit can increase the temperature reduction efficiency of the outer surface of the sample core when the smoothness of the outer surface of the sample core increases, thereby reducing the probability of distortion on the surface of the sample core and improving the accuracy of sample core detection.

[0026] The drive source can drive the drill barrel 110 and the inner barrel 120 to rotate simultaneously around their own axes, and the rotation speed of the inner barrel 120 is less than that of the drill barrel 110. When it is necessary to detect the concrete, the drive source drives the drill barrel 110 and the inner barrel 120 to rotate simultaneously. When the drill barrel 110 rotates, the first ring gear 111 and the second ring gear 112 break the concrete. At this time, the rotation speed of the inner barrel 120 is less than that of the drill barrel 110, reducing the relative movement between the inner barrel 120 and the sample core, thereby reducing the heat generation of the sample core.

[0027] A concrete hardness detection device for water conservancy construction acceptance in the present invention. When detecting the hardness of concrete, first determine the detection point, and take a core sample at the position of the detection point. When it is necessary to take a core sample of concrete, the driving source drives the drill cylinder 110. During the rotation of the drill cylinder 110, the first ring gear 111 and the second ring gear 112 break the concrete. By coaxially rotating the inner cylinder 120 inside the drill cylinder 110, and the rotation speed of the inner cylinder 120 is less than that of the drill cylinder 110. The inner side wall of the inner cylinder 120 can directly contact the concrete core sample. When the rotation speed of the inner cylinder 120 is less than that of the drill cylinder 110, the heat generation of the concrete core sample is reduced; the first cooling unit in the cooling assembly cools the first ring gear 111 and the second ring gear 112 to prevent the first ring gear 111 and the second ring gear 112 from cracking due to high temperature when breaking the concrete. The second cooling unit in the cooling assembly reduces the temperature of the outer surface of the core sample to prevent the temperature of the outer surface of the core sample from being too high, thereby reducing the change of the microstructure of the core sample. Further, since concrete is composed of aggregate and cement mortar, and the thermal conductivity and thermal expansion coefficient of the aggregate and cement mortar are different. When the first ring gear 111 and the second ring gear 112 cut the concrete, the surface smoothness of the aggregate is greater than that of the cement mortar. The second cooling unit can increase the cooling efficiency of the outer surface of the core sample when the smoothness of the outer surface of the core sample increases, thereby reducing the probability of distortion on the surface of the core sample, and further improving the accuracy of core sample detection.

[0028] In one embodiment, the cooling assembly further includes a detection component and a control component. The detection component is used to detect the smoothness of the outer surface of the core sample. Since concrete is composed of aggregate and cement mortar, and the thermal conductivity and thermal expansion coefficient of the aggregate and cement mortar are different. When the first ring gear 111 and the second ring gear 112 cut the concrete, the surface smoothness of the aggregate is greater than that of the cement mortar; if the smoothness of the outer surface of the core sample is relatively high, it proves that the aggregate in the core sample is relatively more. Since the thermal conductivity and thermal expansion coefficient of the aggregate are both greater than those of the cement mortar, at this time, the temperature of the outer surface of the core sample is more likely to enter the core sample. To prevent the core sample from being distorted, at this time, the control component increases the cooling efficiency of the second cooling unit, thereby preventing the temperature of the core sample from being too high.

[0029] In one embodiment, the second cooling unit includes a first conduit 210, a second conduit 220, a first liquid supply pump 230, and a first liquid storage tank 240. The first conduit 210 and the second conduit 220 are disposed inside the side wall of the inner cylinder 120. The upper ends of the first conduit 210 and the second conduit 220 both extend above the inner cylinder 120. A cooling groove 250 is provided on the inner side wall of the inner cylinder 120. The cooling groove 250 is vertically arranged, and the opening of the cooling groove 250 faces the axis of the inner cylinder 120. The lower ends of the first conduit 210 and the second conduit 220 are simultaneously connected to the cooling groove 250. Further, the first conduit 210 is connected to the lower end of the cooling groove 250, and the second conduit 220 is connected to the upper end of the cooling groove 250. When the sample core enters the inside of the inner cylinder 120, the outer surface of the sample core can block the opening of the cooling groove 250. The first liquid storage tank 240 is fixedly connected to the inner cylinder 120. The first liquid storage tank 240 stores coolant inside. The second conduit 220 is connected to the inside of the first liquid storage tank 240. The first liquid supply pump 230 is fixedly connected to the inner cylinder 120. The first liquid supply pump 230 has a first liquid inlet and a first liquid outlet. The first liquid inlet is connected to the first liquid storage tank 240, and the first liquid outlet is connected to the first conduit 210. When the sample core completely blocks the opening of the cooling groove 250, the first liquid supply pump 230 is started. The first liquid supply pump 230 pumps the coolant inside the first liquid storage tank 240, and then transports the coolant into the first conduit 210. The coolant enters the cooling groove 250 through the first conduit 210. The coolant contacts the outer surface of the sample core at the position of the cooling groove 250, thereby realizing cooling of the outer surface of the sample core. The coolant after contacting the outer surface of the sample core returns to the inside of the first liquid storage tank 240 again through the second conduit 220, thereby realizing the reuse of the coolant.

[0030] In one embodiment, there are multiple first conduits 210 and second conduits 220. The multiple first conduits 210 and second conduits 220 are evenly distributed along the circumferential direction of the inner cylinder 120. Correspondingly, there are multiple cooling grooves 250. Each cooling groove 250 is connected to a first conduit 210 and a second conduit 220. The first liquid outlet of the first liquid supply pump 230 is simultaneously connected to the multiple first conduits 210. The multiple second conduits 220 are simultaneously connected to the inside of the first liquid storage tank 240, so as to ensure that the coolant can quickly cool the outer surface of the sample core.

[0031] In one embodiment, the detection assembly includes a vacuum tube 310, a vacuum pump 320, a suction cup 330, and a bellows 340. The vacuum tube 310 is disposed inside the sidewall of the inner cylinder 120. The vacuum pump 320 is fixedly connected to the inner cylinder 120. The vacuum pump 320 is communicated with one end of the vacuum tube 310. An installation groove is provided on the inner sidewall of the inner cylinder 120 and extends along the radial direction of the installation cylinder. The vacuum tube 310 is communicated with the installation groove. The bellows 340 is disposed in the installation groove such that the bellows 340 extends along the radial direction of the inner cylinder 120. One end of the bellows 340 away from the axis of the inner cylinder 120 is fixedly connected to the end of the vacuum tube 310. Moreover, the inside of the vacuum tube 310 is communicated with the inside of the bellows 340. The bellows 340 can be telescopically arranged, and the length of the bellows 340 is initially in the shortest state. The suction cup 330 is slidably disposed in the installation groove. The suction cup 330 is coaxially and fixedly connected to the end of the bellows 340. The suction cup 330 is communicated with the inside of the bellows 340. The end of the suction cup 330 can extend into the inner part of the inner cylinder 120. When the sample core enters the inner part of the inner cylinder 120, the vacuum pump 320 is started, and the gas flows to the vacuum pump 320 through the suction cup 330 and the vacuum tube 310. Among them, the gas flows through the gap between the suction cup 330 and the sample core. According to the different smoothness of the surface of the sample core, the length of the bellows 340 in the installation groove is different. In the initial state, the length of the bellows 340 is in the shortest state. When the surface of the sample core is in an absolutely smooth state, under the action of the vacuum pump 320, the suction cup 330 is gradually adsorbed on the outer surface of the sample core. When the suction cup 330 is adsorbed on the outer surface of the sample core, the length of the bellows 340 is in the longest state.

[0032] In one embodiment, a liquid collecting tank 350 is provided between the vacuum tube 310 and the vacuum pump 320. The inside of the liquid collecting tank 350 has a preset depth of coolant. The liquid collecting tank 350 is provided with a first connecting pipe and a second connecting pipe. One ends of the first connecting pipe and the second connecting pipe are both inside the liquid collecting tank 350, and the other ends of the first connecting pipe and the second connecting pipe are both outside the liquid collecting tank 350. Among them, the end of the first connecting pipe outside the liquid collecting tank 350 is communicated with the vacuum tube 310, and the end of the first connecting pipe inside the liquid collecting tank 350 is below the liquid level of the coolant. The end of the second connecting pipe inside the liquid collecting tank 350 is above the liquid level of the coolant, and the end of the second connecting pipe outside the liquid collecting tank 350 is connected to the vacuum pump 320. When the first liquid supply pump 230 is started, the vacuum pump 320 is started simultaneously. When the coolant contacts the outer surface of the sample core, part of the coolant will remain on the surface of the sample core. When the gas enters the vacuum tube 310, the flowing gas will enter the inside of the vacuum tube 310 along with the air flow. By providing the liquid collecting tank 350, the coolant remaining on the surface of the sample core can be collected.

[0033] In one embodiment, the control assembly includes a first control bladder 410, a second control bladder 420, and a control tube 430. Both the first control bladder 410 and the second control bladder 420 are disposed inside the sidewall of the inner cylinder 120. Further, the first control bladder 410 is disposed in the installation groove, the second control bladder 420 is disposed at the lower end of the first conduit 210, and the control tube 430 is disposed inside the sidewall of the inner cylinder 120. The control tube 430 connects the first control bladder 410 and the second control bladder 420. An extrusion block 360 is fixedly provided at the end of the bellows 340. When the bellows 340 elongates, the extrusion block 360 can extrude the first control bladder 410. Initially, the volumes inside the first control bladder 410 and the second control bladder 420 are set to be the same, and the extrusion block 360 abuts against the first control bladder 410, and the extrusion block 360 exerts an extrusion force on the first control bladder 410. When the extrusion block 360 extrudes the first control bladder 410, the volume of the first control bladder 410 decreases, and the gas inside the first control bladder 410 enters the inside of the second control bladder 420 through the control tube 430, causing the volume of the second control bladder 420 to increase. After the volume inside the second control bladder 420 increases, the inner diameter of the second control bladder 420 decreases, causing the opening at the lower end of the first conduit 210 to decrease, and the flow rate of the coolant passing through the first conduit 210 into the cooling tank 250 increases. When the flow rate of the coolant increases, the cooling rate of the outer surface of the sample core increases.

[0034] In one embodiment, a return spring is provided inside the bellows 340. In the initial state, the return spring is in its original length state, and the return spring can generate a force to drive the bellows 340 to shorten when the bellows 340 elongates. Specifically, the return spring is disposed inside the sidewall of the bellows 340. When the return spring is in its original length state, the length of the bellows 340 is in the shortest state. When the bellows 340 is passively elongated, the return spring is stretched and deformed, and the return spring generates a return force. The return force of the return spring can drive the bellows 340 to generate a shortening force.

[0035] In one embodiment, the first cooling unit includes a cooling pipe 510, a delivery pipe 520, a return pipe 530, a second liquid supply pump 540, and a second liquid storage tank 550. The delivery pipe 520 and the return pipe 530 are both arranged inside the side wall of the drill barrel 110. The cooling pipe 510 is arranged in a ring shape and is disposed at the lower part of the drill barrel 110. The cooling pipe 510 is close to the first ring gear 111 and the second ring gear 112. The lower ends of the delivery pipe 520 and the return pipe 530 are both connected to the cooling pipe 510. The second liquid supply pump 540 is fixedly connected to the drill barrel 110. The second liquid supply pump 540 has a second liquid inlet and a second liquid outlet. The second liquid storage tank 550 is fixedly connected to the drill barrel 110. The second liquid inlet is internally connected to the second liquid storage tank 550. The return pipe 530 is connected to the second liquid storage tank 550. The second liquid outlet is connected to the delivery pipe 520. The second liquid storage tank 550 stores coolant inside. When the second liquid supply pump 540 is started, the coolant can enter the inside of the cooling pipe 510, and the coolant inside the cooling pipe 510 can cool the first ring gear 111 and the second ring gear 112.

[0036] In one embodiment, the drive source includes a drive motor 610 and a differential member. The drive motor 610 is used to drive the inner cylinder 120 to rotate. The differential member is used to accelerate the rotation of the drill barrel 110 when the inner cylinder 120 rotates. When taking a core sample of concrete, the rotation speed of the drill barrel 110 is the rotation speed for directly crushing the concrete. To ensure that the drill barrel 110 can smoothly crush the concrete, the rotation speed of the drill barrel 110 is set relatively high. Further, to ensure that the second cooling unit on the inner cylinder 120 can smoothly cool the circumferential direction of the outer surface of the core sample evenly, the inner cylinder 120 is set to be able to rotate. However, to prevent further heat generation due to relative rotation between the inner cylinder 120 and the core sample, the rotation speed of the inner cylinder 120 is set lower than that of the drill barrel 110, thereby ensuring that the second cooling unit can smoothly cool the core sample while preventing excessive heat generation due to relative movement between the inner cylinder 120 and the core sample.

[0037] In one embodiment, the differential member includes a first gear 620, a second gear 630, and a gear ring 640. The first gear 620 is coaxially and fixedly connected to the inner cylinder 120. The gear ring 640 is coaxially and fixedly connected to the drill barrel 110. The second gear 630 meshes with the first gear 620 and the gear ring 640 simultaneously. When the drive motor directly drives the inner cylinder 120 to rotate, the first gear 620 rotates synchronously with the inner cylinder 120. Through the transmission of the second gear 630, the gear ring 640 rotates, and the gear ring 640 drives the drill barrel 110 to rotate rapidly.

[0038] In one embodiment, a transmission frame 650 is coaxially and fixedly arranged on the inner cylinder 120. The transmission frame 650 penetrates through the upper end of the drill cylinder 110. The power output shaft of the driving motor 610 is fixedly connected to the transmission frame 650. A handle is arranged on the driving motor 610, enabling the staff to hold the driving motor 610. Through the transmission of the transmission frame 650, the inner cylinder 120 is directly driven by the driving motor 610. A transmission rod 660 extending in the radial direction of the inner cylinder 120 is fixedly arranged on the transmission frame 650. The transmission rod 660 is rotatably connected to the second gear 630. By arranging the transmission rod 660, an installation basis is provided for the second gear 630.

[0039] The foregoing are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A concrete hardness detection device for water conservancy construction acceptance, characterized in that: include: A drill tube, the drill tube is vertically arranged; a first ring tooth and a second ring tooth are arranged on the drill tube, the first ring tooth is arranged at the lower end of the drill tube, the second ring tooth is arranged on the inner side wall of the drill tube, and the first ring tooth is arranged below the second ring tooth; An inner cylinder, the inner cylinder is coaxially rotatably sleeved inside the drill cylinder; A cooling component, the cooling component comprising a first cooling unit and a second cooling unit, the first cooling unit being used to cool the first ring teeth and the second ring teeth, the second cooling unit being used to cool the inner side wall of the sample core, and the second cooling unit being able to increase the cooling efficiency when the smoothness of the outer surface of the sample core increases; A driving source, wherein the driving source can drive the drill tube and the inner tube to rotate around their own axes at the same time, and the rotation speed of the inner tube is lower than the rotation speed of the drill tube.

2. A concrete hardness detection device for water conservancy construction acceptance according to claim 1, characterized in that: The cooling component also includes a detection component and a control component. The detection component is used to detect the smoothness of the outer surface of the sample core, and the control component is used to control the cooling efficiency of the second cooling unit to be higher when the smoothness of the outer surface of the sample core is higher.

3. A concrete hardness detection device for water conservancy construction acceptance according to claim 2, characterized in that: The second cooling unit includes a first conduit, a second conduit, a first liquid supply pump and a first liquid storage tank, wherein the first conduit and the second conduit are arranged inside the side wall of the inner cylinder, the inner side wall of the inner cylinder is provided with a cooling groove, the cooling groove is vertically arranged, the opening of the cooling groove faces the axis of the inner cylinder, and the first conduit and the second conduit are both connected to the cooling groove; the first liquid storage tank is fixedly connected to the inner cylinder, the first liquid storage tank stores coolant inside, and the second conduit is connected to the inside of the first liquid storage tank; the first liquid supply pump is fixedly connected to the inner cylinder, the first liquid supply pump has a first liquid inlet and a first liquid outlet, the first liquid inlet is connected to the first liquid storage tank, and the first liquid outlet is connected to the first conduit.

4. A concrete hardness detection device for water conservancy construction acceptance according to claim 3, characterized in that: The detection assembly includes a vacuum tube, a vacuum pump, a suction cup and a bellows. The vacuum tube is arranged inside the side wall of the inner cylinder. The vacuum pump is fixedly connected to the inner cylinder and is communicated with the vacuum tube. The bellows extends along the radial direction of the inner cylinder, and one end of the bellows is communicated with the vacuum tube. The bellows can be retracted and initially is in a state of shortest length. One end of the suction cup is coaxially fixedly connected to the bellows, and the other end of the suction cup extends to the inside of the inner cylinder.

5. A concrete hardness detection device for water conservancy construction acceptance according to claim 4, characterized in that: The control assembly includes a first control bag, a second control bag and a control tube. The first control bag is arranged inside the side wall of the inner tube. An extrusion block is fixedly arranged at the end of the bellows. When the bellows is extended, the extrusion block can squeeze the first control bag. The second control bag is arranged at the end of the first conduit connected to the cooling tank. The control tube connects the first control bag with the second control bag. The volumes of the first control bag and the second control bag are initially set to be the same, and the extrusion block abuts against the first control bag.

6. A concrete hardness detection device for water conservancy construction acceptance according to claim 5, characterized in that: The bellows is provided with a return spring inside. In an initial state, the return spring is in an original length state. The return spring can generate a force to drive the bellows to shorten when the bellows is extended.

7. A concrete hardness detection device for water conservancy construction acceptance according to claim 6, characterized in that: The first cooling unit includes a cooling pipe, a delivery pipe, a return pipe, a second liquid supply pump and a second liquid storage tank. The delivery pipe and the return pipe are both arranged inside the side wall of the drill barrel. The cooling pipe is arranged in a ring shape. The delivery pipe and the return pipe are both connected to the cooling pipe. The second liquid supply pump has a second liquid inlet and a second liquid outlet. The second liquid supply pump is fixedly connected to the drill barrel, and the second liquid storage tank is fixedly connected to the drill barrel. The second liquid inlet is connected to the inside of the second liquid storage tank, the return pipe is connected to the second liquid storage tank, and the second liquid outlet is connected to the delivery pipe.

8. The concrete hardness detection device for water conservancy construction acceptance according to claim 1 is characterized by: The driving source includes a driving motor and a differential member, wherein the driving motor is used to drive the inner cylinder to rotate, and the differential member is used to accelerate the rotation of the drill cylinder when the inner cylinder rotates.

9. A concrete hardness detection device for water conservancy construction acceptance according to claim 8, characterized in that: The differential comprises a first gear, a second gear and a ring gear, the first gear is coaxially fixedly connected to the inner cylinder, the ring gear is coaxially fixedly connected to the drill cylinder, and the second gear meshes with the first gear and the ring gear at the same time.

10. A concrete hardness detection device for water conservancy construction acceptance according to claim 9, characterized in that: A transmission frame is coaxially fixed on the inner tube, the transmission frame passes through the upper end of the drill tube, the power output shaft of the drive motor is fixedly connected to the transmission frame, a transmission rod extending in the radial direction of the inner tube is fixedly arranged on the transmission frame, and the transmission rod is rotationally connected to the second gear.

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