A multi-stage concrete coring device for preventing collapse in core drilling

Abstract

A kind of anti-collapse multistage concrete core drilling device for core drilling method, including equipment base, drill head device, cooling device, position correction device and controller, the drill head device includes sliding base, drive motor, rotating shaft, rotary motor and fixedly connected to the drill head element of rotating shaft, the drill head element includes cylindrical shell and is connected to the first drill head of cylindrical shell, the diameter of the upper end of the first drill head is less than the diameter of lower end, the position correction device includes limiting sleeve connected to equipment base, the inner wall of limiting sleeve is equipped with shock absorbing washer, the shape and size of the shock absorbing washer and limiting sleeve inner wall are adapted, the shape and size of the shock absorbing washer inner wall and rotating shaft are adapted, the cooling device includes injection element, connecting pipe connected to injection element, pressure pump connected to connecting pipe and cooling liquid storage tank connected to pressure pump, the controller is electrically connected with rotary motor, drive motor and pressure pump respectively.

Description

Technical Field

[0001] This invention relates to the field of concrete testing equipment technology, and in particular to a multi-stage concrete core drilling device for core drilling method that prevents collapse. Background Technology

[0002] Concrete is widely used in modern construction. To test parameters such as compaction, hardness, and compressive strength within concrete, core drilling is commonly used. According to relevant testing standards, a core drilling machine is essential for sampling concrete. Current core drilling machines have a relatively simple structure, typically including a mounting base, a drill bit connected to the base, and a position correction device to prevent the drill bit from shifting. However, this type of machine has drawbacks. During drilling, the continuous downward pressure of the drill bit compresses concrete debris, damaging the lower layers of concrete and affecting the test results of subsequent samples. Furthermore, because the drill bit itself is a cylindrical structure, friction between the drill bit and the concrete generates significant heat, easily damaging the drill bit and requiring continuous replenishment of coolant. However, this coolant can easily seep into the concrete, causing environmental pollution. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a multi-stage concrete core drilling device that is designed to improve the accuracy of the shape of the extracted sample and prevent coolant from polluting the environment.

[0004] The technical solution of this invention: A multi-stage concrete core drilling device for core drilling method, comprising an equipment base, a drill bit assembly connected to the equipment base, a cooling device for cooling the drill bit assembly, a position correction device connected to the equipment base, and a controller. The drill bit assembly includes a sliding base connected to the equipment base, a drive motor for driving the sliding base to slide vertically, a rotating shaft connected to the sliding base, a rotary motor for driving the rotating shaft to rotate, and a drill bit element fixedly connected to the rotating shaft. The drill bit element includes a cylindrical shell and a connecting... The first drill bit has a cylindrical shell, with the upper diameter being smaller than the lower diameter. The position correction device includes a limiting sleeve connected to the equipment base. The inner wall of the limiting sleeve is provided with a shock-absorbing washer, the shape and size of which are adapted to the inner wall of the limiting sleeve. The inner wall of the shock-absorbing washer is adapted to the shape and size of the rotating shaft. The cooling device includes a spray element, a connecting pipe connected to the spray element, a pressure pump connected to the connecting pipe, and a coolant storage tank connected to the pressure pump. The controller is electrically connected to the rotary motor, the drive motor, and the pressure pump, respectively.

[0005] Using the above technical solution, the equipment base is first fixed so that the cylindrical shell is aligned with the sampling position. Then, the controller controls the rotary motor to drive the rotating shaft to rotate, causing the cylindrical shell to rotate accordingly. At the same time, the controller controls the drive motor to drive the sliding base to move vertically downward at a uniform speed. The cylindrical shell first performs preliminary core sampling of the concrete. As the cylindrical shell continues to move downward, the first drill bit comes into contact with the sample. Since the upper diameter of the first drill bit is smaller than the lower diameter, the sample diameter is continuously reduced by the first drill bit. This can prevent the sample from breaking due to excessive external force. At the same time, the controller controls the pressure pump to provide pressure, so that the coolant in the coolant storage tank flows through the connecting pipe into the spray element. The coolant sprayed by the spray element rapidly cools the cylindrical shell and the first drill bit, thereby avoiding severe wear of the equipment.

[0006] A further feature of the present invention is that the drill bit device further includes a second drill bit connected to the first drill bit, the upper diameter of the second drill bit being smaller than the lower diameter, the first drill bit and the second drill bit being coaxially arranged, the upper diameter of the first drill bit being larger than the lower diameter of the second drill bit, and the upper diameter of the second drill bit being adapted to the diameter of the required sample.

[0007] By adopting the above technical solution, since the drill bit device also includes a second drill bit connected to the first drill bit, the upper diameter of the second drill bit is smaller than the lower diameter. This allows the sample to be shaped through multiple and continuous grinding processes, thereby reducing the particle size of the waste chips during the core drilling process, further preventing the sample from being crushed by compression, and thus improving the accuracy of the sample during testing.

[0008] Further features of the present invention: the first drill bit and the second drill bit are respectively provided with a first feed port and a second feed port; the connecting pipe includes a first connecting pipe and a second connecting pipe; the cylindrical shell is provided with a first feed groove and a second feed groove; the first connecting pipe and the second connecting pipe are respectively connected to the first feed groove and the second feed groove; the spraying element includes a first spraying element and a second spraying element; the first spraying element and the second spraying element are respectively connected to the first connecting pipe and the second connecting pipe; the first spraying element and the second spraying element are respectively aligned with the first feed port and the second feed port; the rotating shaft is provided with a fixed platform; the coolant storage tank and the pressure pump are fixedly connected to the fixed platform.

[0009] By adopting the above technical solution, since the first and second spray elements are respectively aligned with the first and second feed ports, and the first and second feed ports are respectively located on the first and second drill bits, cooling can be introduced between the first and second drill bits and the sample, further lubricating both. When the amount of coolant added reaches a certain level, the waste chips will be backflowed from the first and second feed ports, which plays a role in timely cleaning of waste chips. At the same time, it can also reduce the wear of waste chips on the sample and ensure that the sample will not break during the core extraction process.

[0010] A further feature of the present invention includes a cleaning device comprising a first suction element, a second suction element, a first suction pipe connected to the first suction element, a second suction pipe connected to the second suction element, an air pump connected to the first and second suction pipes, and a waste collection trough connected to the air pump. The cylindrical shell is also provided with a first discharge trough and a second discharge trough. The first and second suction pipes are respectively connected to the first and second discharge troughs. The first and second suction elements are respectively on the same horizontal plane as the first and second spraying elements. The air pump and the waste collection trough are fixedly connected to a fixed platform.

[0011] By adopting the above technical solution, the cleaning device includes a first suction element, a second suction element, a first suction pipe connected to the first suction element, a second suction pipe connected to the second suction element, an air pump connected to the first suction pipe and the second suction pipe, and a waste collection tank connected to the air pump. The first suction element and the second suction element are respectively on the same horizontal plane as the first spray element and the second spray element. The coolant waste liquid and drill core debris are sucked out through the first suction pipe and the second suction pipe, avoiding environmental pollution. At the same time, it can further reduce the wear of the waste debris on the sample and further protect the sample from damage.

[0012] A further feature of the present invention includes an air blowing device, which includes a pressure pump and an air blowing pipe connected to the pressure pump. The cylindrical housing is provided with an air inlet groove, and the air blowing pipe is connected to the air inlet groove. The opening of the air inlet groove is located vertically below the first discharge port, and the opening direction of the air inlet groove is aligned with the first feed port.

[0013] By adopting the above technical solution, since the opening position of the air inlet groove is lower than the position of the first discharge port in the vertical direction, and the opening direction of the air inlet groove is aligned with the position of the first feed port, the waste chips can be blown up by the airflow in the air blowing pipe, avoiding the hardening of the waste chips after compression, and further protecting the sample from damage.

[0014] A further feature of the present invention is that the position correction device further includes a connecting plate connected to the cylindrical shell, an elastic rope connected between the connecting plate and the limiting sleeve, and a sliding block connected to the elastic rope. The bottom of the connecting plate is provided with a positioning groove, and the cylindrical shell is provided with a positioning block fixedly connected to the cylindrical shell. The positioning block can slide in the positioning groove, and the positioning groove is annular. The limiting sleeve is provided with a sliding groove, and the sliding block is slidably connected to the sliding groove. The connecting plate is coaxially arranged with the cylindrical shell, and the connecting plate is placed above the cylindrical shell. The number of the elastic rope and the sliding block is the same and greater than or equal to two.

[0015] Using the above technical solution, the position correction device also includes a connecting plate connected to the cylindrical shell, an elastic rope connecting the connecting plate and the limiting sleeve, and a sliding block connected to the elastic rope. As the drive motor drives the sliding base to move vertically downward, the cylindrical shell will also slide downward, and the connecting plate will also slide down. Since the connecting plate is only fixed on the cylindrical shell and is coaxially arranged with the cylindrical shell, and the cylindrical shell is provided with a positioning block fixedly connected to the cylindrical shell, the positioning block can slide in the positioning groove, which is annular. Therefore, the connecting plate only moves vertically and does not rotate. The distance between the limiting sleeve and the connecting plate is continuously lengthened, so that the elastic rope will exert a pulling force towards the center on the sliding block, and the sliding block will also exert a force towards the center on the limiting sleeve, thereby further improving the limiting effect of the limiting sleeve and preventing the cylindrical shell from undergoing relative displacement during core drilling, which would cause the drilled sample shape accuracy to be substandard. Attached Figure Description

[0016] Appendix Figure 1 This is a schematic diagram of a multi-stage concrete core drilling device for core drilling method that is designed to prevent collapse, according to a specific embodiment of the present invention.

[0017] Appendix Figure 2 This is a cross-sectional view of the drill bit assembly in a multi-stage concrete core drilling device for core drilling method according to a specific embodiment of the present invention.

[0018] Appendix Figure 3 This is a schematic diagram of the position correction device in a multi-stage concrete core drilling device for core drilling method according to a specific embodiment of the present invention.

[0019] 1-Equipment base, 2-Drill bit assembly, 3-Cooling device, 4-Position correction device, 5-Controller, 6-Sliding base, 7-Drive motor, 8-Rotating shaft, 9-Rotating motor, 10-Drill bit element, 11-Cylindrical housing, 12-First drill bit, 13-Limiting sleeve, 14-Shock-absorbing washer, 15-Jet element, 16-Connecting pipe, 17-Pressure pump, 18-Coolant storage tank, 19-Second drill bit, 20-First feed inlet, 21-Second feed inlet, 22-First connecting pipe, 23-Second connecting pipe, 24-First feed inlet 25-Second feed trough, 26-First spray element, 27-Second spray element, 28-Fixed platform, 29-Cleaning device, 30-First suction element, 31-Second suction element, 32-First suction pipe, 33-Second suction pipe, 34-First discharge trough, 35-Second discharge trough, 36-Air pump, 37-Waste collection trough, 38-Pressure pump, 39-Blowing pipe, 40-Air inlet trough, 41-Connecting plate, 42-Elastic rope, 43-Sliding block, 44-Positioning groove, 45-Positioning block, 46-Sliding groove. Detailed Implementation

[0020] like Figure 1-3 As shown, a multi-stage concrete core drilling device for core drilling method with anti-collapse capability includes a base 1, a drill bit assembly 2 connected to the base 1, a cooling device 3 for cooling the drill bit assembly 2, a position correction device 4 connected to the base 1, and a controller 5. The drill bit assembly 2 includes a sliding base 6 connected to the base 1, a drive motor 7 for driving the sliding base 6 to slide vertically, a rotating shaft 8 connected to the sliding base 6, a rotary motor 9 for driving the rotating shaft 8 to rotate, and a drill bit element 10 fixedly connected to the rotating shaft 8. The drill bit element 10 includes a cylindrical housing 11 and a first drill bit connected to the cylindrical housing 11. 12. The upper diameter of the first drill bit 12 is smaller than the lower diameter. The position correction device 4 includes a limiting sleeve 13 connected to the equipment base 1. The inner wall of the limiting sleeve 13 is provided with a shock-absorbing washer 14. The shape and size of the shock-absorbing washer 14 are adapted to the inner wall of the limiting sleeve 13. The inner wall of the shock-absorbing washer 14 is adapted to the shape and size of the rotating shaft 8. The cooling device 3 includes a spray element 15, a connecting pipe 16 connected to the spray element 15, a pressure pump 17 connected to the connecting pipe 16, and a coolant storage tank 18 connected to the pressure pump 17. The controller 5 is electrically connected to the rotary motor 9, the drive motor 7, and the pressure pump 17 respectively.

[0021] First, the equipment base 1 is fixed so that the cylindrical shell 11 is aligned with the sampling position. Then, the controller 5 controls the rotary motor 9 to drive the rotary shaft 8 to rotate, causing the cylindrical shell 11 to rotate accordingly. At the same time, the controller 5 controls the drive motor 7 to drive the sliding base 6 to move vertically downward at a uniform speed. The cylindrical shell 11 first performs preliminary core sampling of the concrete. As the cylindrical shell 11 moves downward, the first drill bit 12 comes into contact with the sample. Since the upper diameter of the first drill bit 12 is smaller than the lower diameter, the sample diameter is continuously reduced as it is ground by the first drill bit 12. This can prevent the sample from breaking due to excessive external force. At the same time, the controller 5 controls the pressure pump 17 to provide pressure, so that the coolant in the coolant storage tank 18 flows through the connecting pipe 16 into the spray element 15. The coolant sprayed by the spray element 15 rapidly cools the cylindrical shell 11 and the first drill bit 12, thereby avoiding severe wear of the equipment.

[0022] The drill bit device 2 also includes a second drill bit 19 connected to the first drill bit 12. The upper diameter of the second drill bit 19 is smaller than the lower diameter. The first drill bit 12 and the second drill bit 19 are coaxially arranged. The upper diameter of the first drill bit 12 is larger than the lower diameter of the second drill bit 19. The upper diameter of the second drill bit 19 is adapted to the diameter of the required sample.

[0023] Since the drill bit device 2 also includes a second drill bit 19 connected to the first drill bit 12, the upper diameter of the second drill bit 19 is smaller than the lower diameter. This allows the sample to be shaped by multiple, continuous grinding processes, thereby reducing the particle size of the waste chips during the core drilling process, further preventing the sample from being crushed by pressure, and thus improving the accuracy of the sample during testing.

[0024] The first drill bit 12 and the second drill bit 19 are respectively provided with a first feed port 20 and a second feed port 21. The connecting pipe 16 includes a first connecting pipe 22 and a second connecting pipe 23. The cylindrical shell 11 is provided with a first feed groove 24 and a second feed groove 25. The first connecting pipe 22 and the second connecting pipe 23 are respectively connected to the first feed groove 24 and the second feed groove 25. The spraying element 15 includes a first spraying element 26 and a second spraying element 27. The first spraying element 26 and the second spraying element 27 are respectively connected to the first connecting pipe 22 and the second connecting pipe 23. The first spraying element 26 and the second spraying element 27 are respectively aligned with the first feed port 20 and the second feed port 21. The rotating shaft 8 is provided with a fixed platform 28. The coolant storage tank 18 and the pressure pump 17 are fixedly connected to the fixed platform 28.

[0025] Since the first jet element 26 and the second jet element 27 are respectively aligned with the first feed port 20 and the second feed port 21, and the first feed port 20 and the second feed port 21 are respectively located on the first drill bit 12 and the second drill bit 19, cooling can enter between the first drill bit 12, the second drill bit 19 and the sample, so that the two are further lubricated. When the amount of coolant added reaches a certain level, the waste chips will be backflowed from the first feed port 20 and the second feed port 21, which plays a role in timely cleaning of waste chips. At the same time, it can also reduce the wear of waste chips on the sample and ensure that the sample will not break during the core extraction process.

[0026] It also includes a cleaning device 29, which includes a first suction element 30, a second suction element 31, a first suction pipe 32 connected to the first suction element 30, a second suction pipe 33 connected to the second suction element 31, an air pump 36 connected to the first suction pipe 32 and the second suction pipe 33, and a waste collection tank 37 connected to the air pump 36. The cylindrical shell 11 is also provided with a first discharge tank 34 and a second discharge tank 35. The first suction pipe 32 and the second suction pipe 33 are respectively connected to the first discharge tank 34 and the second discharge tank 35. The first suction element 30 and the second suction element 31 are respectively on the same horizontal plane as the first spray element 26 and the second spray element 27. The air pump 36 and the waste collection tank 37 are fixedly connected to the fixed platform 28.

[0027] Since the cleaning device 29 includes a first suction element 30, a second suction element 31, a first suction pipe 32 connected to the first suction element 30, a second suction pipe 33 connected to the second suction element 31, an air pump 36 connected to the first suction pipe 32 and the second suction pipe 33, and a waste collection tank 37 connected to the air pump 36, and the first suction element 30 and the second suction element 31 are respectively on the same horizontal plane as the first spray element 26 and the second spray element 27, the coolant waste liquid and drill core debris are sucked out through the first suction pipe 32 and the second suction pipe 33, avoiding environmental pollution. At the same time, it can further reduce the wear of the waste debris on the sample and further protect the sample from damage.

[0028] It also includes an air blowing device, which includes a pressure pump 38 and an air blowing pipe 39 connected to the pressure pump 38. The cylindrical housing 11 is provided with an air inlet groove 40, and the air blowing pipe 39 is connected to the air inlet groove 40. The opening of the air inlet groove 40 is lower than the first discharge port in the vertical direction, and the opening direction of the air inlet groove 40 is aligned with the position of the first feed port 20.

[0029] Since the opening of the air inlet groove 40 is lower than the position of the first discharge port in the vertical direction, and the opening direction of the air inlet groove 40 is aligned with the position of the first feed port 20, the waste chips can be blown up by the airflow in the air blowing pipe 39, avoiding the hardening of the waste chips after compression, and further protecting the sample from damage.

[0030] The position correction device 4 further includes a connecting plate 41 connected to the cylindrical shell 11, an elastic rope 42 connected between the connecting plate 41 and the limiting sleeve 13, and a sliding block 43 connected to the elastic rope 42. The bottom of the connecting plate 41 is provided with a positioning groove 44. The cylindrical shell 11 is provided with a positioning block 45 fixedly connected to the cylindrical shell 11. The positioning block 45 can slide in the positioning groove 44. The positioning groove 44 is annular. The limiting sleeve 13 is provided with a sliding groove 46. The sliding block 43 is slidably connected to the sliding groove 46. The connecting plate 41 is coaxially arranged with the cylindrical shell 11. The connecting plate 41 is placed above the cylindrical shell 11. The number of elastic ropes 42 and sliding blocks 43 is the same and greater than or equal to two.

[0031] Since the position correction device 4 also includes a connecting plate 41 connected to the cylindrical housing 11, an elastic rope 42 connected between the connecting plate 41 and the limiting sleeve 13, and a sliding block 43 connected to the elastic rope 42, as the drive motor 7 drives the sliding base 6 to move vertically downward, the cylindrical housing 11 will also slide downward, and the connecting plate 41 will also slide down. Since the connecting plate 41 is only fixed on the cylindrical housing 11 and is coaxially arranged with the cylindrical housing 11, a positioning block 45 fixedly connected to the cylindrical housing 11 is provided on the cylindrical housing 11. The positioning block 45 can slide in the positioning groove 44, which is annular. Therefore, the connecting plate 41 only moves vertically and does not rotate. The distance between the limiting sleeve 13 and the connecting plate 41 is continuously extended, so that the elastic rope 42 will exert a pulling force on the sliding block 43 in the center direction. The sliding block 43 will also exert a force on the limiting sleeve 13 in the center direction, thereby further improving the limiting effect of the limiting sleeve 13 and preventing the cylindrical shell 11 from undergoing relative displacement during the core drilling process, which would result in the drilled sample having substandard shape accuracy.

Claims

1. A multi-stage concrete core drilling device for core drilling with anti-collapse characteristics, characterized in that: The device includes a base, a drill bit assembly connected to the base, a cooling device for cooling the drill bit assembly, a position correction device connected to the base, and a controller. The drill bit assembly includes a sliding base connected to the base, a drive motor for driving the sliding base to slide vertically, a rotating shaft connected to the sliding base, a rotary motor for driving the rotating shaft to rotate, and a drill bit element fixedly connected to the rotating shaft. The drill bit element includes a cylindrical housing and a first drill bit connected to the cylindrical housing, the upper diameter of the first drill bit being smaller than the lower diameter. The position correction device includes a limiting sleeve connected to the base, the inner wall of which is provided with a shock-absorbing washer. The shock-absorbing washer is adapted to the shape and size of the inner wall of the limiting sleeve. The inner wall of the gasket is adapted to the shape and size of the rotating shaft. The cooling device includes a spray element, a connecting pipe connected to the spray element, a pressure pump connected to the connecting pipe, and a coolant storage tank connected to the pressure pump. The controller is electrically connected to the rotary motor, the drive motor, and the pressure pump. The drill bit device also includes a second drill bit connected to the first drill bit. The upper diameter of the second drill bit is smaller than the lower diameter. The first drill bit and the second drill bit are coaxially arranged. The upper diameter of the first drill bit is larger than the lower diameter of the second drill bit. The upper diameter of the second drill bit is adapted to the diameter of the required sample. The first drill bit and the second drill bit are respectively provided with a first feed port and a second feed port. The connecting pipe includes a first connecting pipe and a second connecting pipe. The cylindrical shell has a first feed trough and a second feed trough, with the first and second connecting pipes respectively connected to the first and second feed troughs. The spraying element includes a first spraying element and a second spraying element, which are respectively connected to the first and second connecting pipes and aligned with the first and second feed inlets. A fixed platform is provided on the rotating shaft, and the coolant storage tank and pressure pump are fixedly connected to the fixed platform. The system also includes a cleaning device, comprising a first suction element, a second suction element, a first suction pipe connected to the first suction element, a second suction pipe connected to the second suction element, and a... The system includes a suction pipe and a second suction pipe, an air pump, and a waste collection trough connected to the air pump. The cylindrical shell is also provided with a first discharge trough and a second discharge trough. The first suction pipe and the second suction pipe are respectively connected to the first discharge trough and the second discharge trough. The first suction element and the second suction element are respectively on the same horizontal plane as the first spray element and the second spray element. The air pump and the waste collection trough are fixedly connected to a fixed platform. The system also includes an air blowing device, which includes a pressure pump and an air blowing pipe connected to the pressure pump. The cylindrical shell is provided with an air inlet groove, and the air blowing pipe is connected to the air inlet groove. The opening of the air inlet groove is lower than the first discharge port in the vertical direction, and the opening direction of the air inlet groove is aligned with the first feed port.

2. A multi-stage concrete core drilling device for core drilling with anti-collapse capability as described in claim 1, characterized in that: The position correction device further includes a connecting plate connected to the cylindrical shell, an elastic rope connected between the connecting plate and the limiting sleeve, and a sliding block connected to the elastic rope. The bottom of the connecting plate is provided with a positioning groove, and the cylindrical shell is provided with a positioning block fixedly connected to the cylindrical shell. The positioning block can slide in the positioning groove, which is annular. The limiting sleeve is provided with a sliding groove, and the sliding block is slidably connected to the sliding groove. The connecting plate is coaxially arranged with the cylindrical shell and is placed above the cylindrical shell. The number of elastic ropes and sliding blocks is the same and greater than or equal to two.

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