Concrete coring device for engineering quality detection

Abstract

The invention relates to the technical field of concrete material detection equipment, in particular to a concrete coring device for engineering quality detection. Comprising a moving frame which is rotatably connected with a threaded rod; the lifting frame is in threaded connection with the threaded rod, the lifting frame is in sliding connection with the movable frame, and the lifting frame is fixedly connected with a power motor and a fixed frame; the drilling barrel is rotationally connected to the fixing frame; the drill ring is arranged on the drill cylinder; the sliding shell is connected into the drilling barrel in a sliding mode, and the sliding shell is connected with sliding blocks which are symmetrically distributed in a sliding mode; and the steel wire rope is fixedly connected between the sliding block and the drilling barrel. The sliding block is driven by the sliding shell to move and tighten the steel wire rope, so that the steel wire rope is gradually tightened and extrudes the concrete core to complete fixation, concrete is fixed at multiple positions, the contact area of the steel wire rope and the concrete core is increased, the probability that the concrete core falls off is reduced, and the concrete coring efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete material testing equipment, and in particular to a concrete coring device for engineering quality testing. Background Art

[0002] Concrete drilling coring inspection is a common method for evaluating the quality and strength of concrete structures. During the coring operation, existing inspection devices usually use a hollow drill bit to perform circular cutting at a predetermined position to separate the concrete core sample from the main structure. The drill tool is then removed and the core sample is extracted through a clamping device. However, since the bottom of the broken concrete core contacts the substrate, the existing device cannot fix the concrete core from the bottom and can only clamp the concrete core from the side. At the same time, due to the small gap between the existing borehole wall and the concrete core, the depth of the clamping device into the borehole is small, resulting in insufficient effective embedding depth of the clamping device and a small contact area between the clamping device and the concrete core. In addition, the polishing effect generated by the continuous friction between the drill bit and the concrete during the drilling process significantly reduces the surface roughness of the core sample, resulting in a small fixing force of the clamping device on the concrete core. The concrete core is prone to fall off, making it difficult for workers to remove the concrete core. At the same time, the fallen concrete core is easily damaged after colliding with the main structure, requiring re-sampling, which affects the efficiency of concrete core inspection. Summary of the Invention

[0003] The present invention provides a concrete coring device for engineering quality inspection, in order to solve the shortcoming that the existing sampling device cannot directly take out the concrete core after the drilling is completed.

[0004] The cam is connected to the driving mechanism and the transmission mechanism, and the transmission mechanism is connected with the transmission mechanism by the spring, and the transmission mechanism is connected with the transmission mechanism by the spring.

[0005] Furthermore, the power assembly includes: an electric push rod, fixedly connected to the fixed frame, the telescopic end of the electric push rod is fixedly connected to an adjusting frame, the adjusting frame is slidably and rotatably connected to the drill barrel; a transmission frame, rotatably connected to the adjusting frame, the transmission frame is slidably connected to the drill barrel; an extrusion ring, slidably connected to the drill barrel, the extrusion ring is located on the moving path of the transmission frame, the extrusion ring is provided with an arc surface on the side close to the sliding shell, the arc surface of the extrusion ring is used to push all the sliding blocks to move, and a tension spring is fixed between the extrusion ring and the drill barrel; a crushing assembly, provided on the drill ring, for breaking the concrete core.

[0006] Furthermore, a fixed shell is fixedly connected to one side of the transmission frame close to the sliding shell, the fixed shell is slidably connected to the extrusion ring, and the fixed shell is used to fix the position of the sliding block.

[0007] Furthermore, the side of the extrusion ring close to the fixed shell is a gradient surface, and the diameter of the gradient surface on the extrusion ring increases as the distance between the extrusion ring and the sliding shell increases. The gradient surface is used to extrude the fixed shell to deform it.

[0008] Furthermore, a buffer ring is fixedly connected to the sliding shell, and the buffer ring is located on the moving path of the extrusion ring.

[0009] Furthermore, the crushing assembly includes: a crushing rod, which is slidably connected to the drill ring, and the end of the crushing rod close to the central axis of the drill ring is conical, which is used to reduce the contact area between the crushing rod and the concrete core, and a second spring is fixed between the crushing rod and the drill ring; a transmission assembly, which is arranged on the adjustment frame and is used to push the crushing rod to move.

[0010] Furthermore, the transmission assembly also includes: a vibration ring, fixedly connected to the adjustment frame; a transmission rod, slidably connected to the drill barrel, the transmission rod and the drill ring are slidably connected, the vibration ring is provided with evenly distributed protrusions, the protrusions of the vibration ring are used to push the transmission rod to move, and a third spring is fixed between the transmission rod and the drill barrel; a trapezoidal block, fixedly connected to the side of the transmission rod away from the vibration ring, the trapezoidal block is slidably connected to the drill ring, and the trapezoidal block is used to push the breaking rod to move.

[0011] Furthermore, it also includes: multiple elastic ropes, which are symmetrically distributed and fixed to the drill ring. The drill ring is provided with multiple arc grooves. The elastic ropes are located in adjacent arc grooves on the drill ring. The elastic ropes are used to fix the lower part of the concrete core. The drill barrel is slidably connected to the drill ring.

[0012] Furthermore, the drill barrel is fixed with baffles having the same number as the elastic ropes, the baffles are slidably connected to the drill collar, and the baffles are used to squeeze the elastic ropes.

[0013] Furthermore, the side of the baffle away from the drill barrel is an arc-shaped surface, and the distance between the middle of the arc-shaped surface on the baffle and the drill barrel is smaller than the distance between the two sides thereof and the drill barrel.

[0014] The beneficial effects of the present invention are as follows: 1. During the process of taking concrete cores, the present invention drives the sliding block to move and tighten the wire rope through the sliding shell, so that the wire rope is gradually tightened and squeezes the concrete core to complete the fixation, thereby fixing the concrete at multiple positions, increasing the contact area of the wire rope on the concrete core, thereby reducing the probability of the concrete core falling off and improving the efficiency of concrete coring.

[0015] 2. After the steel wire rope fixes the concrete core, the present invention squeezes the sliding block through the squeezing ring, causing the sliding block to move and tighten the steel wire rope, thereby increasing the fixing force of the steel wire rope on the concrete core and ensuring the fixing effect on the concrete core.

[0016] 2. After the steel wire rope fixes the concrete core, the present invention fixes the sliding block through the fixed shell, so that the sliding block cannot move, thereby preventing the sliding block from moving during the process of driving the concrete core upward, causing the steel wire rope to loosen and release the fixation of the concrete core, affecting the normal removal of the concrete core.

[0017] 3. In the process of driving the concrete core to move upward, the present invention supports the lower part of the concrete core through the elastic rope, thereby further reducing the probability of the concrete core falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the lifting frame, power motor and fixing frame of the present invention; Figure 3 Schematic diagram of the three-dimensional structure of the electric push rod, adjustment frame and vibration ring of the present invention; Figure 4 Schematic diagram of the three-dimensional structure of the sliding block, transmission frame and transmission rod of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the extrusion ring, the fixed shell and the buffer ring of the present invention; Figure 6 Schematic diagram of the three-dimensional structure of the vibration ring, the transmission rod and the third spring of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the sliding block, the steel wire rope and the first spring of the present invention; Figure 8It is a schematic diagram of the three-dimensional structure of the trapezoidal block, the breaker rod and the second spring of the present invention; Figure 9 This is an exploded view of the three-dimensional structure of the drill collar, elastic rope and baffle of the present invention.

[0019] Figure numerals: 1-mobile frame, 2-threaded rod, 3-lifting frame, 4-power motor, 5-fixed frame, 6-drill barrel, 7-drill ring, 8-breaking block, 9-sliding shell, 10-sliding block, 11-wire rope, 101-first spring, 12-electric push rod, 13-adjusting frame, 14-transmission frame, 15-extrusion ring, 16-tension spring, 17-fixed shell, 18-buffer ring, 19-vibration ring, 20-transmission rod, 21-third spring, 22-trapezoidal block, 23-breaking rod, 24-second spring, 25-elastic rope, 26-baffle. DETAILED DESCRIPTION

[0020] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which presently preferred embodiments of the invention are shown. However, the invention can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and will fully convey the scope of the invention to those skilled in the art.

[0021] A concrete coring device for engineering quality inspection, such as Figures 1-8 As shown, it includes: a mobile frame 1, which is rotatably connected to a threaded rod 2; a lifting frame 3, which is threadedly connected to the threaded rod 2, the lifting frame 3 is slidably connected to the mobile frame 1, and the lifting frame 3 is fixedly connected to a power motor 4 and a fixed frame 5; a drill barrel 6, which is rotatably connected to the fixed frame 5, and the drill barrel 6 and the output shaft of the power motor 4 are driven by a pulley and a belt; a drill ring 7, which is arranged in the drill barrel 6, and the lower part of the drill ring 7 is fixedly connected to circumferentially distributed crushing blocks 8; a sliding shell 9, which is slidably connected to the drill barrel 6, and the sliding shell 9 is slidably connected to symmetrically distributed sliding blocks 10, and a first spring 101 is fixed between the sliding block 10 and the sliding shell 9; a wire rope 11, the number of which is the same as the number of sliding blocks 10, which is fixed between adjacent sliding blocks 10 and the drill barrel 6; a power assembly, which is arranged on the fixed frame 5, and is used to drive the symmetrically distributed sliding blocks 10 to move and tighten the wire rope 11, so that the wire rope 11 fixes the concrete core.

[0022] The above scheme provides a way to directly remove the concrete core from the drill hole by tying it to the side of the concrete core by the wire rope 11 after the concrete drilling is completed; a handrail is provided on the movable frame 1, which facilitates the staff to push the device to move and adjust the position; initially, the lifting frame 3 is located at the upper part of the threaded rod 2, and the drill barrel 6 and the drill ring 7 are both provided with circulation channels, and the circulation channels of the drill barrel 6 and the drill ring 7 are connected by a hard pipe, and the upper part of the fixed frame 5 is connected to the external water pump through a hose, which is used to transport cooling water to the circulation channels of the drill barrel 6 and the drill ring 7 to reduce the temperature of the drill ring 7 and the broken block 8 during the drilling process; in this embodiment, the drill barrel 6 and the drill ring 7 are fixedly connected, and there will be no relative sliding between the two. The minimum inner diameter of the drill barrel 6 and the drill ring 7 are The minimum inner diameter is the same, and the crushing block 8 is used to destroy concrete; the sliding shell 9 is composed of a circular plate and a circular tube. The minimum inner diameter of the circular tube on the sliding shell 9 is the same as the minimum inner diameter of the drill barrel 6. Initially, the lower side of the sliding shell 9 is in contact with the drill barrel 6, and the two together constitute a storage chamber. The wire rope 11 is located in the storage chamber and passes through the upper part of the sliding shell 9. In this embodiment, the number of sliding blocks 10 and wire ropes 11 is two, and their number and length can be adjusted according to actual conditions. The circular plate of the sliding shell 9 is provided with two sliding grooves. Initially, the sliding block 10 is located in the sliding groove on the sliding shell 9, close to the side of the inner wall of the drill barrel 6, and the first spring 101 is used to push the sliding block 10 to reset; the wire rope 11 is spirally located in the storage chamber composed of the sliding shell 9 and the drill barrel 6.

[0023] Further, such as Figure 3-Figure 6 As shown, the power assembly includes: an electric push rod 12, which is fixed to the fixed frame 5, and the telescopic end of the electric push rod 12 is fixed to the adjusting frame 13, and the adjusting frame 13 is slidably and rotatably connected to the drill tube 6; a transmission frame 14, which is rotatably connected to the adjusting frame 13, and the transmission frame 14 is slidably connected to the drill tube 6; an extrusion ring 15, which is slidably connected to the drill tube 6, and the extrusion ring 15 is located on the moving path of the transmission frame 14, and the extrusion ring 15 is provided with an arc surface on the side close to the sliding shell 9, and the arc surface of the extrusion ring 15 is used to push all the sliding blocks 10 to move, and a tension spring 16 is fixed between the extrusion ring 15 and the drill tube 6; a crushing assembly, which is provided on the drill ring 7 and is used to break the concrete core.

[0024] Further, such as Figure 5 and Figure 6 As shown, a fixed shell 17 is fixedly connected to one side of the transmission frame 14 close to the sliding shell 9 . The fixed shell 17 is slidably connected to the extrusion ring 15 . The fixed shell 17 is used to fix the position of the sliding block 10 .

[0025] Further, such as Figure 4-Figure 6 As shown, the side of the extrusion ring 15 close to the fixed shell 17 is a gradual surface, and the diameter of the gradual surface on the extrusion ring 15 increases as the distance between it and the sliding shell 9 increases. The gradual surface is used to squeeze the fixed shell 17 to deform it.

[0026] Further, such as Figure 3-Figure 5 、 Figure 7 and Figure 8 As shown, a buffer ring 18 is fixed to the sliding shell 9 , and the buffer ring 18 is located on the moving path of the extrusion ring 15 .

[0027] The above solution provides a method for driving the sliding block 10 to move when removing the concrete core, so that the sliding block 10 tightens the wire rope 11, thereby increasing the fixing force of the wire rope 11 on the concrete core; the sliding block 10 is composed of a ball head rod and a rectangular block, the ball head rod of the sliding block 10 is used to reduce the wear when it is squeezed with the squeezing ring 15, the electric push rod 12 is used to drive the adjustment frame 13 to move; the transmission frame 14 is used to push the squeezing ring 15 to move downward, and the arc surface of the squeezing ring 15 is concave upward, and the arc surface is used to squeeze the squeezing ring 15 when it moves downward. The sliding block 10 and the tension spring 16 are used to drive the extrusion ring 15 to move upward and reset; the fixed shell 17 is elastic. Initially, the gradient surface of the extrusion ring 15 and the lower side of the fixed shell 17 have a uniform transition, so that the fixed shell 17 can gather toward its center when being squeezed by the gradient surface of the extrusion ring 15, thereby clamping the ball head rod of the sliding block 10, so that the sliding block 10 cannot drive the wire rope 11 to move, and the buffer ring 18 is used to buffer the extrusion force between the extrusion ring 15 and the sliding block 10, and the wire rope 11 passes through the buffer ring 18.

[0028] Further, such as Figure 7 and Figure 8 As shown, the crushing assembly includes: a crushing rod 23, which is slidably connected to the drill collar 7. The end of the crushing rod 23 close to the central axis of the drill collar 7 is tapered to reduce the contact area between the crushing rod 23 and the concrete core. A second spring 24 is fixed between the crushing rod 23 and the drill collar 7; a transmission assembly is provided on the adjustment frame 13 and is used to push the crushing rod 23 to move.

[0029] Further, such as Figure 3-Figure 8 As shown, it also includes a transmission assembly: a vibration ring 19, fixed to the adjustment frame 13; a transmission rod 20, slidably connected to the drill barrel 6, the transmission rod 20 is slidably connected to the drill ring 7, the vibration ring 19 is provided with evenly distributed protrusions, the protrusions of the vibration ring 19 are used to push the transmission rod 20 to move, and a third spring 21 is fixed between the transmission rod 20 and the drill barrel 6; a trapezoidal block 22, fixed to the side of the transmission rod 20 away from the vibration ring 19, the trapezoidal block 22 is slidably connected to the drill ring 7, and the trapezoidal block 22 is used to push the breaker rod 23 to move.

[0030] The above scheme provides a method for breaking the concrete core and separating it from the matrix by evenly tapping the connection between the concrete core and the matrix during the process of removing the concrete core; initially, the breaker rod 23 is located in the drill collar 7, and the tapered shape of the breaker rod 23 is used to concentrate its force on the concrete core, and the second spring 24 is used to push the breaker rod 23 to reset; the upper end of the transmission rod 20 is hemispherical, and the cross-section of the protrusion on the vibration ring 19 is an isosceles trapezoid. The height of the protrusion on the vibration ring 19 is less than the radius of the upper hemisphere of the transmission rod 20. The protrusion of the vibration ring 19 squeezes the transmission rod 20 through the inclined surface thereon, so that the transmission rod 20 drives the trapezoidal block 22 to move downward.

[0031] Workflow: When it is necessary to drill a concrete core, the staff pushes the device to a suitable sampling position so that the central axis of the drill barrel 6 coincides with the center of the position to be sampled. Then the staff starts the power motor 4 and the water pump. The output shaft of the power motor 4 drives the drill barrel 6 to rotate through the pulley and belt. The drill barrel 6 drives the drill collar 7 and the sliding shell 9 and other parts thereon to rotate. The drill collar 7 drives the crushing block 8 to rotate. The water pump delivers cooling water to the flow channel of the drill barrel 6 through the fixed frame 5. The cooling water entering the flow channel in the drill barrel 6 enters the flow channel of the drill collar 7 through the hard pipe, and then is discharged from the bottom of the flow channel of the drill collar 7 and falls onto the concrete surface. At this time, the staff rotates the threaded rod 2 at a uniform speed, so that the threaded rod 2 drives the lifting frame 3 to move downward. The lifting frame 3 drives the power motor 4 and the fixed frame 5 to move downward. The fixed frame 5 drives the drill barrel 6 and the parts thereon to move downward, so that the crushing block 8 gradually approaches the surface of the concrete. Until the crushing block 8 contacts the concrete surface, the threaded rod 2 continues to drive the lifting frame 3 to move downward, so that the crushing block 8 continues to move downward and crush the concrete. The formed concrete core gradually enters the drill collar 7 and the drill barrel 6.

[0032] As the crushing block 8 continues to move downward to crush the concrete, the thickness of the concrete core entering the drill tube 6 gradually increases. When the upper side of the concrete core contacts the sliding shell 9, the concrete core pushes the sliding shell 9 to move upward relative to the drill tube 6, and the sliding shell 9 drives the sliding block 10 to move synchronously. The sliding block 10 moves upward relative to the drill tube 6 and pulls the wire rope 11, so that the wire rope 11 is gradually tightened and close to the concrete core. During this process, the wire rope 11 does not contact the concrete core. Until the drill tube 6 penetrates the specified depth into the concrete, the staff stops rotating the threaded rod 2, the lifting frame 3 stops moving, the drill tube 6 and the parts on it stop moving, and the staff starts the electric push rod 12. The telescopic end of the electric push rod 12 drives the adjusting frame 13 to move downward, and the adjusting frame 13 drives the transmission frame 14 and the vibration ring 19 to move downward. The transmission frame 14 drives the fixed shell 17 to move downward and squeeze the extrusion ring 15, so that the extrusion ring 15 moves synchronously and stretches the tension spring 16. During this process, the drill tube 6 always drives the parts on it to rotate.

[0033] During the downward movement of the transmission frame 14, the transmission frame 14 drives the extrusion ring 15 to move downward through the fixed shell 17, and the extrusion ring 15 moves and stretches the tension spring 16 until the arc surface of the extrusion ring 15 contacts the ball head rod of the sliding block 10. The extrusion ring 15 continues to move downward and squeezes the two sliding blocks 10, so that the two sliding blocks 10 are close to each other and compress the first spring 101. The sliding block 10 moves and tightens the wire rope 11, so that the wire rope 11 is contracted and tightened until the wire rope 11 contacts the concrete core. The wire rope 11 squeezes the concrete core. In this process, when the extrusion ring 15 contacts the buffer ring 18, the extrusion ring 15 squeezes Buffer ring 18, until the buffer ring 18 can no longer be compressed, the extrusion ring 15 stops moving downward, the sliding block 10 separates from the arc surface of the extrusion ring 15, and the sliding block 10 moves to the bottom of the fixed shell 17 and is located on the inner side of the adjacent slide groove of the sliding shell 9. As the transmission frame 14 drives the fixed shell 17 to continue to move downward, the lower part of the fixed shell 17 gradually shrinks and wraps the sliding block 10 under the extrusion of the gradual surface of the extrusion ring 15, until the lower side surface of the transmission frame 14 contacts the extrusion ring 15, the transmission frame 14 stops moving, the telescopic end of the electric push rod 12 stops extending and automatically closes, the fixed shell 17 stops deforming and completes the fixation of the sliding block 10.

[0034] The third spring 21 pushes the transmission rod 20 back to its original position, and the third spring 21 pushes the transmission rod 20 back to its original position, so that the transmission rod 20 can move up and down to the maximum extent. After the trapezoidal block 22 contacts the breaker rod 23, the trapezoidal block 22 squeezes the breaker rod 23, causing the breaker rod 23 to compress the second spring 24 and knock the concrete core. In this process, after the trapezoidal block 22 separates from the breaker rod 23, the second spring 24 pushes the breaker rod 23 to reset. As the vibration ring 19 continues to move downward, the knocking force of the breaker rod 23 on the concrete core increases. Until the transmission frame 14 stops moving, the vibration ring 19 stops moving, and the knocking force of the breaker rod 23 on the concrete core reaches the maximum. In this process, the drill barrel 6 rotates to adjust the position of the breaker rod 23 so that the concrete core is evenly stressed. After the concrete core breaks, the staff turns off the power motor 4, and then rotates the threaded rod 2 in the opposite direction to drive the lifting frame 3 and other parts thereon to move upward. After the drill collar 7 is removed from the borehole, the threaded rod 2 is stopped from rotating, the drill barrel 6 and the parts thereon stop rotating, and then the device is pushed to move and remove the drill collar 7 from above the borehole.

[0035] After the drill collar 7 is moved out from above the drill hole, the staff will start the electric push rod 12, and the electric push rod 12 drives the adjusting frame 13 to move upward and reset. The adjusting frame 13 drives the transmission frame 14 and the vibration ring 19 to move upward and reset. The transmission frame 14 drives the fixed shell 17 to move upward. The downward extrusion force of the fixed shell 17 on the extrusion ring 15 is reduced. The extrusion ring 15 moves upward and reset under the pull of the tension spring 16. The fixed shell 17 moves upward relative to the sliding block 10, so that the fixed shell 17 is gradually separated from the sliding block 10 until the shape of the fixed shell 17 is restored to the state of the fixed sliding block 10 after the two are separated. The fixed shell 17 and the extrusion ring 15 continue to move upward. After the tension spring 16 is reset, the extrusion ring 15 stops moving, and the fixed shell 17 moves upward relative to the extrusion ring 15. The shape of the fixed shell 17 gradually returns to its initial state. After the telescopic end of the electric push rod 12 is fully retracted, the fixed shell 17 stops moving and completes the reset.

[0036] After the fixed shell 17 is separated from the sliding block 10, the first spring 101 pushes the sliding block 10 to reset, reducing the tension of the sliding block 10 on the wire rope 11. The wire rope 11 loosens and releases the fixation on the concrete core. The staff takes out the concrete core, and the sliding shell 9 drives the parts on it to move downward under the action of gravity until the lower side of the sliding shell 9 contacts the drill tube 6. The sliding shell 9 stops moving and completes the reset. After that, the staff repeats the above process to sample other positions to be tested.

[0037] Further, such as Figure 3 、 Figure 4 、 Figure 7 and Figure 9 As shown, it also includes: a plurality of elastic ropes 25, which are symmetrically distributed and are all fixed to the drill collar 7. The drill collar 7 is provided with a plurality of arc grooves. The elastic ropes 25 are located in adjacent arc grooves on the drill collar 7. The elastic ropes 25 are used to fix the lower part of the concrete core. The drill barrel 6 is slidably connected to the drill collar 7.

[0038] Further, such as Figure 3-Figure 5 and Figure 7-Figure 9 As shown, the drill tube 6 is fixed with baffles 26 , the number of which is the same as the elastic ropes 25 . The baffles 26 are slidably connected to the drill collar 7 , and are used to squeeze the elastic ropes 25 .

[0039] Further, such as Figure 3-Figure 5 and Figure 7-Figure 9 As shown, the side of the baffle 26 away from the drill tube 6 is an arcuate surface, and the distance between the middle of the arcuate surface of the baffle 26 and the drill tube 6 is smaller than the distance between the two sides thereof and the drill tube 6.

[0040] The above provides a way to support the concrete core from the bottom to prevent the concrete from falling off; in this embodiment, there are two elastic ropes 25. Initially, the elastic ropes 25 are in a stretched state, and the height of the arc groove on the drill collar 7 is flush with the height of the breaker rod 23. After the concrete core is separated from the substrate, the elastic rope 25 can move directly to the bottom of the concrete core under its own elastic action. In this example, the drill collar 7 can slide up and down relative to the drill tube 6. Initially, the upper side of the drill collar 7 is in contact with the drill tube 6, and under the action of the third spring 21, the transmission rod 20 clamps the drill collar 7 through the trapezoidal block 22, so that the drill collar 7 and the drill tube 6 cannot move relative to each other, and the arc surface of the baffle 26 is concave upward. The arc surface of the baffle 26 is used to squeeze the elastic rope 25 so that the elastic rope 25 enters the arc groove of the drill collar 7.

[0041] Working process: During the above-mentioned core drilling process, the drill tube 6 drives the drill collar 7 and the baffle 26 to rotate, and the drill collar 7 drives the elastic rope 25 and the crushing block 8 to rotate. The crushing block 8 rotates and crushes the concrete after contacting the concrete. As the depth of the drill collar 7 entering the concrete increases, when the drill tube 6 enters the specified depth in the concrete, the drill tube 6 stops moving downward, the electric push rod 12 starts and drives the vibration ring 19 to move downward, and the vibration ring 19 moves the trapezoidal block 22 downward by squeezing the transmission rod 20, and the crushing rod 23 repeats the above process to squeeze the concrete core. The bottom of the drill core is broken from the bottom, and the wire rope 11 repeats the above process to fix the concrete core. When the concrete core is broken, the staff turns off the electric push rod 12 and the power motor 4, and then rotates the threaded rod 2 in the opposite direction to make the lifting frame 3 drive the drill barrel 6 to move upward and reset. The drill barrel 6 drives the trapezoidal block 22 to move and reset through the transmission rod 20. At this time, the upper side of the trapezoidal block 22 is separated from the drill collar 7, and the trapezoidal block 22 releases the limit on the drill collar 7. As the drill barrel 6 drives the parts on it to move upward and reset, the drill collar 7 moves downward relative to the drill barrel 6 under the action of its own gravity.

[0042] In the process of the drill tube 6 moving upward, as the drill tube 6 moves upward, the drill tube 6 drives the baffle 26 to move upward relative to the drill collar 7 and gradually releases the squeeze on the elastic rope 25. The elastic rope 25 contracts and moves to the bottom of the concrete core. The elastic rope 25 supports the concrete core from below to prevent the steel wire rope 11 from being unstable in fixing the concrete core and causing it to fall off, causing the concrete core to be damaged after being hit. As the drill tube 6 moves upward, when the upper side of the trapezoidal block 22 contacts the drill collar 7 again, the drill tube 6 and the drill collar 7 stop moving relative to each other, and the trapezoidal block 22 drives the drill collar 7 to move upward synchronously until the drill collar 7 moves above the concrete, and the staff stops. The threaded rod 2 is stopped from rotating, the drill tube 6 and the parts thereon stop moving, and the staff pushes the movable frame 1 to move, so that the drill collar 7 is removed from above the drill hole. Then the staff starts the electric push rod 12, and the telescopic end of the electric push rod 12 is retracted and drives the adjusting frame 13 to move synchronously. The adjusting frame 13 drives the vibration ring 19 and the transmission frame 14 to move upward and reset. The transmission frame 14 drives the fixed shell 17 to move to release the fixation of the sliding block 10. The sliding block 10 is reset under the push of the first spring 101 and reduces the tension on the wire rope 11, so that the extrusion force of the wire rope 11 on the concrete core is reduced, so that the concrete core is no longer squeezed and fixed by the wire rope 11 and automatically falls.

[0043] During the upward movement of the vibration ring 19, the third spring 21 drives the trapezoidal block 22 to move upward through the transmission rod 20, so that the trapezoidal block 22 drives the drill collar 7 to move upward relative to the drill barrel 6, and the drill collar 7 drives the elastic rope 25 to move upward relative to the baffle 26, so that the curved surface of the baffle 26 squeezes the elastic rope 25, and the elastic rope 25 is stretched and reset until the upper side surface of the drill collar 7 contacts the drill barrel 6, the drill collar 7 stops moving and completes the reset, and the elastic rope 25 moves out from under the concrete core, after which the staff removes the concrete core from the drill barrel 6.

[0044] The above embodiments are provided to persons familiar with the art for implementing or using the present invention. Personnel familiar with the art may make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments.

Claims

1. A concrete coring device for engineering quality inspection, characterized by comprising: A movable frame (1), wherein the movable frame (1) is rotatably connected to a threaded rod (2); A lifting frame (3) is threadedly connected to the threaded rod (2), the lifting frame (3) is slidably connected to the movable frame (1), and the lifting frame (3) is fixedly connected to a power motor (4) and a fixed frame (5); A drill barrel (6) is rotatably connected to the fixed frame (5), and the drill barrel (6) and the output shaft of the power motor (4) are driven by a pulley and a belt; A drill ring (7) is arranged on the drill tube (6), and a lower portion of the drill ring (7) is fixed with circumferentially distributed crushing blocks (8); A sliding shell (9) is slidably connected to the drill tube (6); the sliding shell (9) is slidably connected to symmetrically distributed sliding blocks (10); a first spring (101) is fixedly connected between the sliding blocks (10) and the sliding shell (9); Steel wire ropes (11), the number of which is the same as the number of the sliding blocks (10), are fixed between adjacent sliding blocks (10) and the drill pipe (6); A power assembly is provided on the fixing frame (5) and is used to drive the symmetrically distributed sliding blocks (10) to move and tighten the steel wire ropes (11), so that the steel wire ropes (11) fix the concrete core.

2. A concrete coring device for engineering quality inspection according to claim 1, characterized in that: The power assembly includes: An electric push rod (12) is fixed to the fixed frame (5), and an adjustment frame (13) is fixed to the telescopic end of the electric push rod (12), and the adjustment frame (13) is connected to the drill pipe (6) in a sliding and rotational manner; A transmission frame (14) is rotatably connected to the adjustment frame (13), and the transmission frame (14) is slidably connected to the drill pipe (6); An extrusion ring (15) is slidably connected to the drill barrel (6). The extrusion ring (15) is located on the moving path of the transmission frame (14). A curved surface is provided on a side of the extrusion ring (15) close to the sliding shell (9). The curved surface of the extrusion ring (15) is used to push all the sliding blocks (10) to move. A tension spring (16) is fixed between the extrusion ring (15) and the drill barrel (6). A crushing assembly is provided on the drill collar (7) and is used to break the concrete core.

3. A concrete coring device for engineering quality inspection according to claim 2, characterized in that: A fixed shell (17) is fixedly connected to one side of the transmission frame (14) close to the sliding shell (9), and the fixed shell (17) is slidably connected to the extrusion ring (15). The fixed shell (17) is used to fix the position of the sliding block (10).

4. A concrete coring device for engineering quality inspection according to claim 3, characterized in that: The side of the extrusion ring (15) close to the fixed shell (17) is a gradient surface, and the diameter of the gradient surface on the extrusion ring (15) increases as the distance between the extrusion ring (15) and the sliding shell (9) increases. The gradient surface is used to extrude the fixed shell (17) to deform it.

5. A concrete coring device for engineering quality inspection according to claim 4, characterized in that: A buffer ring (18) is fixedly connected to the sliding shell (9), and the buffer ring (18) is located on the moving path of the extrusion ring (15).

6. A concrete coring device for engineering quality inspection according to claim 2, characterized in that: The crushing assembly includes: a breaker rod (23) slidably connected to the drill ring (7); an end of the breaker rod (23) close to the central axis of the drill ring (7) is tapered to reduce the contact area between the breaker rod (23) and the concrete core; and a second spring (24) is fixed between the breaker rod (23) and the drill ring (7); A transmission assembly is provided on the adjustment frame (13) and is used to push the breaking rod (23) to move.

7. A concrete coring device for engineering quality inspection according to claim 6, characterized in that: Also included is the transmission assembly: A vibration ring (19) is fixed to the adjustment frame (13); A transmission rod (20) is slidably connected to the drill tube (6), the transmission rod (20) is slidably connected to the drill ring (7), the vibration ring (19) is provided with evenly distributed protrusions, the protrusions of the vibration ring (19) are used to push the transmission rod (20) to move, and a third spring (21) is fixed between the transmission rod (20) and the drill tube (6); A trapezoidal block (22) is fixed to a side of the transmission rod (20) away from the vibration ring (19), the trapezoidal block (22) is slidably connected to the drill ring (7), and the trapezoidal block (22) is used to push the breaking rod (23) to move.

8. A concrete coring device for engineering quality inspection according to claim 7, characterized in that: Also included are: The elastic ropes (25) are symmetrically distributed in a plurality and are all fixed to the drill ring (7). The drill ring (7) is provided with a plurality of arc grooves. The elastic ropes (25) are located in adjacent arc grooves on the drill ring (7). The elastic ropes (25) are used to fix the lower part of the concrete core. The drill barrel (6) is slidably connected to the drill ring (7).

9. A concrete coring device for engineering quality inspection according to claim 8, characterized in that: The drill tube (6) is fixedly connected with baffles (26) having the same number as the elastic ropes (25). The baffles (26) are slidably connected to the drill ring (7). The baffles (26) are used to squeeze the elastic ropes (25).

10. A concrete coring device for engineering quality inspection according to claim 9, characterized in that: The side of the baffle (26) away from the drill barrel (6) is an arcuate surface, and the distance between the middle of the arcuate surface of the baffle (26) and the drill barrel (6) is smaller than the distance between the two sides thereof and the drill barrel (6).

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