Energy and frequency controllable impact rotary micro drill experimental table

Abstract

The application discloses an energy and frequency controllable impact rotary micro drill experiment table and relates to the technical field of drilling test, which comprises a lifting and pressurizing assembly, an impact transmission assembly, a rotary load assembly and a flushing liquid circulating assembly; the lifting and pressurizing assembly is used for applying drilling pressure to the impact transmission assembly; the impact transmission assembly changes the gas supply pressure and gas flow in the adjustable pneumatic impactor shell through an adjustable electromagnetic valve, and changes the impact force and impact frequency of the impact hammer body impacting the drill; the rotary load assembly is used for driving the rock sample to rotate; the flushing liquid circulating assembly enables the cooling liquid to continuously pass through the drill bit; and the data sensing assembly is used for acquiring experimental data; the application has great significance for studying the damage effect and influence of drill bits with different characteristics on rocks.

Description

Technical Field

[0001] This invention relates to the field of drilling testing technology, and in particular to an impact rotary micro-drilling test bench with controllable energy and frequency. Background Technology

[0002] The rotary impact micro-drilling experimental platform is a platform for conducting various miniature simulated rotary impact drilling experiments indoors. It has significant theoretical and practical implications for research on the destructive effects and influences of drill bits with different impact frequencies, impact energies, rotation speeds, and characteristics on rocks.

[0003] Currently, there are relatively few types of rotary impact micro-drilling test benches available both domestically and internationally. Although each type has its own strengths, it is difficult to conduct multi-faceted analysis of rotary impact drilling. For example, the inventor's "A Large-Diameter Impact Rotary Drilling Experimental Platform for Constructing Rescue Channels" (application number: 202121890243.9) can obtain the performance of the drilling tool and its drilling efficiency in different formations, but it cannot precisely control drilling parameters such as impact frequency, impact force, drilling pressure, and rotation speed. The inventor's "A Portable Drilling Rig with Rapid Deployment and Impact Rotation" has a built-in power source module, which can be quickly moved and deployed, and can perform impact rotation drilling, but it cannot precisely control drilling parameters and does not have a drilling information feedback sensor. The inventor's "An Integrated Impact Rotation Power Head" (application number: 202122939475.5) can simultaneously realize the impact and rotation drilling process, but its drilling parameters also cannot be precisely adjusted. The inventor's "A Variable Speed ​​Impact Rotation Power Head" (application number: 202211074436.6) solves the problem that the transmission mechanism of the traditional impact rotary drilling process cannot be variable in speed, but the speed adjustment stages are limited and the impact frequency and impact energy cannot be adjusted, which cannot meet the experimental requirements.

[0004] In summary, existing rotary impact micro-drilling experimental platforms are limited in type and lack the experimental functions of simultaneously adjusting impact frequency, impact energy, drilling pressure, and rotation speed. However, these functions are indispensable for understanding the destructive effect and impact of drill bits on rocks. Therefore, it is of great significance to invent a self-adjusting rotary impact micro-drilling experimental platform with the function of simultaneously adjusting impact energy and impact frequency. Summary of the Invention

[0005] In view of the problems and shortcomings of the existing technology, the purpose of this invention is to provide a self-adjusting rotary impact micro-drilling test bench with the function of simultaneously adjusting impact energy and impact frequency, which is mainly used to realize rotary impact drilling experiments under the condition of simultaneously adjusting impact energy and impact frequency.

[0006] An impact rotary micro-drilling experimental platform with controllable energy and frequency includes a lifting and pressurizing assembly, an impact transmission assembly, a rotating loading assembly, and a flushing fluid circulation assembly.

[0007] The lifting and pressurizing assembly is used to apply drilling pressure to the impact transmission assembly;

[0008] The impact transmission assembly includes an adjustable pneumatic impactor housing, drill rod, drill bit, impact hammer body, rebound spring, and adjustable solenoid valve;

[0009] The upper part of the lifting platform is fixedly connected to the housing of the adjustable pneumatic impactor, and the lower part of the lifting platform is fixedly connected to the drill rod through a pressure sensor. The lifting platform drives the drill rod to move and transmits pressure to the drill rod. The adjustable solenoid valve is connected to the gas pipeline of the housing of the adjustable pneumatic impactor. The top of the drill rod is coaxially fixedly connected to the housing of the adjustable pneumatic impactor. The impact hammer body is slidably connected inside the housing of the adjustable pneumatic impactor. The lower end of the impact hammer body is connected to the lifting platform through a rebound spring. The adjustable solenoid valve can change the air supply pressure and air flow rate inside the housing of the adjustable pneumatic impactor, as well as the impact force and impact frequency of the impact hammer body impacting the drill bit.

[0010] The rotating load assembly is used to rotate the rock sample;

[0011] The flushing fluid circulation assembly includes a storage tank, a collection tank, a water pump, and liquid pipelines;

[0012] The liquid storage tank is fixedly connected to the lower end of the overall support column. The liquid accumulation tank is located above the rotating platform of the rotating load assembly. When the rotating platform of the rotating load assembly rotates, it drives the liquid accumulation tank and the rock sample inside to rotate synchronously. The water pump is fixedly connected to the upper surface of the load-bearing platform of the rotating load assembly. The liquid pipeline connects the liquid storage tank below, the water pump and the water inlet of the drill rod, so that the coolant can continuously pass through the drill bit.

[0013] The data sensing component is used to acquire experimental data.

[0014] Preferably, the lifting and pressurizing assembly includes a pneumatic cylinder, a lifting platform, an integral support column, a slide rail, a slider, and a gas pipeline;

[0015] The integral support column is slidably connected to the slider on the lifting platform via the inner slide rail, allowing the lifting platform to slide up and down along the slide rail. The top of the pneumatic cylinder is fixedly connected to the bottom surface of the upper beam of the integral support column, and the bottom of the pneumatic cylinder push rod is fixedly connected to the upper surface of the lifting platform. When the pneumatic cylinder is ventilated, it can drive the lifting platform to move and provide pressure to it. The gas pipeline is connected to the air inlet and outlet of the pneumatic cylinder and the adjustable pneumatic impactor housing.

[0016] Preferably, the rotating load assembly includes a drive motor, a support platform, a load turntable, a support column, and a rock clamping rod;

[0017] The upper part of the load-bearing platform is rotatably connected to the turntable, and the lower part of the load-bearing platform is fixedly connected to the load-bearing column. The drive motor is embedded in the load-bearing platform, and the drive gear fixedly connected to the drive motor meshes with the drive teeth on the outer periphery of the turntable. Two rock clamping rods are symmetrically arranged on both sides of the liquid accumulation pool on the upper part of the turntable. The rock clamping rods are threadedly rotatably connected to the liquid accumulation pool. The rock clamping rods can move into the liquid accumulation pool through the threaded rotation to clamp the rock sample.

[0018] Preferably, the data sensing components include a lifting platform displacement sensor, a drill rod pressure sensor, and a torque sensor; the upper end of the lifting platform displacement sensor is fixedly connected to the bottom surface of the upper beam of the overall support, and the lower end of the lifting platform displacement sensor is fixedly connected to the upper surface of the lifting platform, used to measure the displacement value of the lifting platform rising or falling; the pressure is applied to the drill rod by the lifting platform through the drill rod pressure sensor to measure the drilling pressure; the housing of the torque sensor is fixedly connected to the support platform, and the central shaft of the torque sensor is fixedly connected to the load-bearing turntable, so that the torque can be measured when the load-bearing turntable rotates.

[0019] The beneficial effects of this invention are:

[0020] This invention fills the gap in existing rotary impact micro-drill experimental devices that lack the ability to simultaneously adjust impact frequency, impact energy, drilling pressure, and rotation speed. It is equipped with corresponding data sensing components and is a highly integrated and automated multifunctional rotary impact micro-drill experimental device. In addition to meeting the existing requirements for rotary impact micro-drill experiments, it is of great significance for studying the destructive effects and influences of drill bits with different characteristics on rocks, and has a wide range of applications. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0022] Figure 2 This is the right view of the present invention;

[0023] Figure 3 yes Figure 2 Sectional view at point AA′;

[0024] Figure 4 This is a top view of the present invention;

[0025] Figure 5 yes Figure 2 Top view of the cross section at point BB′.

[0026] Explanation of reference numerals in the attached drawings: 101 Pneumatic cylinder, 102 Lifting platform, 103 Integral support column, 104 Slide rail, 105 Slider, 106 Gas pipeline, 201 Adjustable pneumatic impactor, 202 Drill rod, 203 Drill bit, 204 Impact hammer body, 205 Rebound spring, 206 Adjustable solenoid valve, 301 Drive motor, 302 Load-bearing platform, 303 Load-bearing turntable, 304 Load-bearing column, 305 Rock clamping rod, 401 Liquid storage tank, 402 Liquid accumulation tank, 403 Water pump, 404 Liquid pipeline, 501 Lifting platform displacement sensor, 502 Drill rod pressure sensor, 503 Torque sensor. Detailed Implementation

[0027] Please see Figures 1 to 5 As shown, an impact rotary micro-drilling experimental platform with controllable energy and frequency includes a lifting and pressurizing assembly, an impact transmission assembly, a rotating loading assembly, a flushing fluid circulation assembly, and a data sensing assembly.

[0028] The lifting and pressurizing assembly includes a pneumatic cylinder 101, a lifting platform 102, an integral support column 103, a slide rail 104, a slider 105, and a gas pipeline 106.

[0029] The integral support column 103 is slidably connected to the slider 105 on the lifting platform 102 via the inner slide rail 104, so that the lifting platform 102 can slide up and down along the slide rail 104. The top of the pneumatic cylinder 101 is fixedly connected to the bottom surface of the upper beam of the integral support column 103, and the bottom of the push rod of the pneumatic cylinder 101 is fixedly connected to the upper surface of the lifting platform 102. When the pneumatic cylinder 101 is ventilated, it can drive the lifting platform 102 to move and provide pressure to it. The gas pipe 106 is connected to the air inlet and outlet of the pneumatic cylinder 101 and the adjustable pneumatic impactor housing 201.

[0030] The impact transmission assembly includes an adjustable pneumatic impactor housing 201, a drill rod 202, a drill bit 203, an impact hammer body 204, a rebound spring 205, and an adjustable solenoid valve 206.

[0031] The upper part of the lifting platform 102 is fixedly connected to the adjustable pneumatic impactor housing 201, and the lower part of the lifting platform 102 is fixedly connected to the drill rod 202 via a pressure sensor 502. The lifting platform 102 drives the drill rod 202 to move and transmits pressure to the drill rod 202. The adjustable solenoid valve 206 is connected to the gas pipeline 106 of the adjustable pneumatic impactor housing 201. The top end of the drill rod 202 is coaxially fixedly connected to the adjustable pneumatic impactor housing 201. The impact hammer 204 is slidably connected inside the adjustable pneumatic impactor housing 201, and the lower end of the impact hammer 204 is connected via... The spring 205 is connected to the lifting platform 102. The adjustable solenoid valve 206 changes the air supply pressure and air flow in the adjustable pneumatic impactor housing 201, thereby changing the impact force and impact frequency of the impact hammer 205 impacting the drill bit. The spring 205 then resets the impact hammer 204. The lower end of the drill rod 202 is coaxially threaded with the drill bit 203, which makes the drill bit 203 work stably and allows for the replacement of different drill bits 203. The water inlet of the drill rod 202 is fixedly connected to the liquid pipe 404 of the flushing fluid circulation component, which transmits the flushing fluid to the drill bit 203.

[0032] The rotating load assembly includes a drive motor 301, a support platform 302, a load turntable 303, a support column 304, and a rock clamping rod 305;

[0033] The upper part of the support platform 302 is rotatably connected to the rotating platform 303, allowing the rotating platform 303 to rotate coaxially along the support platform 302. The lower part of the support platform 302 is fixedly connected to the support column 304, which supports the weight of the upper support platform 302 and the rotating platform 303, as well as the positive pressure of the drill bit during operation. The drive motor 301 is embedded and connected to the support platform 302. The drive gear fixedly connected to the drive motor 301 meshes with the drive teeth on the outer periphery of the rotating platform 303, allowing the rotating platform 303 to rotate with the drive motor 301. Two rock clamping rods 305 are symmetrically arranged on both sides of the liquid collection pool 402 on the upper part of the rotating platform 303. The rock clamping rods 305 are threadedly rotatably connected to the liquid collection pool 402, allowing the rock clamping rods 305 to move into the liquid collection pool 402 through threaded rotation to clamp the rock sample.

[0034] The flushing fluid circulation assembly includes a storage tank 401, a collection tank 402, a water pump 403, and a liquid pipeline 404;

[0035] The liquid storage tank 401 is fixedly connected to the lower end of the overall support column 103. The liquid accumulation tank 402 is located above the turntable 303. When the turntable 303 rotates, it drives the liquid accumulation tank 402 and the rock sample inside to rotate synchronously. The water pump 403 is fixedly connected to the upper surface of the support platform 302. The liquid pipeline 404 connects the lower liquid storage tank 401, the water pump 403 and the water inlet of the drill rod 202, so that the coolant can continuously pass through the drill bit 203.

[0036] The data sensing components include a lifting platform displacement sensor 501, a drill pipe pressure sensor 502, and a torque sensor 503;

[0037] The upper end of the lifting platform displacement sensor 501 is fixedly connected to the bottom surface of the upper beam of the overall support column 103, and the lower end of the lifting platform displacement sensor 501 is fixedly connected to the upper surface of the lifting platform 102. It is used to measure the displacement value of the lifting platform 102 when it rises or falls. The upper surface of the drill rod pressure sensor 502 is fixedly connected to the lower surface of the lifting platform 102, and the lower surface is fixedly connected to the upper step surface of the drill rod 202. The pressure is applied to the drill rod 202 by the lifting platform 102 through the drill rod pressure sensor 502 to measure the drilling pressure. The housing of the torque sensor 503 is fixedly connected to the support platform 302, and the central shaft of the torque sensor 503 is fixedly connected to the load turntable 303. When the load turntable 303 rotates, the torque can be measured.

[0038] The working process and operating principle of this invention:

[0039] (1) Preparatory work

[0040] During the experiment, the control system controls the extension and retraction of the pneumatic cylinder 101, which causes the lifting platform 102 to drive the drill bit to rise. The rock sample is placed in the liquid pool 402 and the rock clamping rod 305 is rotated to clamp the rock sample. The drill bit below is provided with positive pressure by the pneumatic cylinder 101.

[0041] (2) Conducting experiments

[0042] The control system first starts the drive motor 301 to drive the rotating platform 303 to rotate and controls the speed. Then, the control system starts and adjusts the impact frequency and impact force of the adjustable pneumatic impactor housing 201 to provide an impact effect for the drill bit. Next, the drilling pressure is adjusted by controlling the pneumatic cylinder 101. Finally, the drive motor 301 drives the rotating platform 303 and the rock sample to rotate. During the experiment, the displacement sensor 501 of the lifting platform, the drill rod pressure sensor 502 and the torque sensor 503 transmit the measured data to the computer.

Claims

1. An impact rotary micro-drilling experimental platform with controllable energy and frequency, characterized in that: It includes a lifting and pressurizing assembly, an impact transmission assembly, a rotating loading assembly, and a flushing fluid circulation assembly; The lifting and pressurizing assembly is used to apply drilling pressure to the impact transmission assembly; The impact transmission assembly includes an adjustable pneumatic impactor housing (201), a drill rod (202), a drill bit (203), an impact hammer body (204), a rebound spring (205), and an adjustable solenoid valve (206). The upper part of the lifting platform (102) is fixedly connected to the adjustable pneumatic impactor housing (201), and the lower part of the lifting platform (102) is fixedly connected to the drill rod (202) through the drill rod pressure sensor (502). The lifting platform (102) drives the drill rod (202) to move and transmits pressure to the drill rod (202). The adjustable solenoid valve (206) is connected to the gas pipe (106) of the adjustable pneumatic impactor housing (201). The top of the drill rod (202) is coaxially fixedly connected to the adjustable pneumatic impactor housing (201). The impact hammer (204) is slidably connected inside the adjustable pneumatic impactor housing (201). The lower end of the impact hammer (204) is connected to the lifting platform (102) through the spring spring (205). The adjustable solenoid valve (206) can change the air supply pressure and air flow rate inside the adjustable pneumatic impactor housing (201), as well as the impact force and impact frequency of the impact hammer (204) impacting the drill tool. The rotating load assembly is used to rotate the rock sample; The flushing fluid circulation assembly includes a storage tank (401), a collection tank (402), a water pump (403), and a liquid pipeline (404). The liquid storage tank (401) is fixedly connected to the lower end of the overall support column (103). The liquid accumulation tank (402) is located above the rotating platform (303) of the rotating load assembly. When the rotating platform (303) of the rotating load assembly rotates, it drives the liquid accumulation tank (402) and the internal rock sample to rotate synchronously. The water pump (403) is fixedly connected to the upper surface of the load-bearing platform (302) of the rotating load assembly. The liquid pipeline (404) connects the lower liquid storage tank (401), the water pump (403) and the water inlet of the drill rod (202), so that the coolant can continuously pass through the drill bit (203). The data sensing component is used to acquire experimental data; The lifting and pressurizing assembly includes a pneumatic cylinder (101), a lifting platform (102), an integral support column (103), a slide rail (104), a slider (105), and a gas pipeline (106). The integral support column (103) is slidably connected to the slider (105) on the lifting platform (102) through the inner slide rail (104), so that the lifting platform (102) can slide up and down along the slide rail (104). The top of the pneumatic cylinder (101) is fixedly connected to the bottom surface of the upper beam of the integral support column (103), and the bottom of the push rod of the pneumatic cylinder (101) is fixedly connected to the upper surface of the lifting platform (102). When the pneumatic cylinder (101) is ventilated, it can drive the lifting platform (102) to move and provide pressure to it. The gas pipe (106) is connected to the air inlet and outlet of the pneumatic cylinder (101) and the adjustable pneumatic impactor housing (201). The data sensing components include a lifting platform displacement sensor (501), a drill rod pressure sensor (502), and a torque sensor (503). The upper end of the lifting platform displacement sensor (501) is fixedly connected to the bottom surface of the upper beam of the overall support column (103), and the lower end of the lifting platform displacement sensor (501) is fixedly connected to the upper surface of the lifting platform (102). It is used to measure the displacement value of the lifting platform (102) when it rises or falls. The pressure is applied to the drill rod (202) by the lifting platform (102) through the drill rod pressure sensor (502) to measure the drilling pressure. The housing of the torque sensor (503) is fixedly connected to the support platform (302), and the central shaft of the torque sensor (503) is fixedly connected to the turntable (303). When the turntable (303) rotates, the torque can be measured.

2. The impact rotary micro-drilling experimental platform with controllable energy and frequency according to claim 1, characterized in that: The rotating load assembly includes a drive motor (301), a support platform (302), a load turntable (303), a support column (304), and a rock clamping rod (305). The upper part of the support platform (302) is rotatably connected to the turntable (303), and the lower part of the support platform (302) is fixedly connected to the support column (304). The drive motor (301) is embedded and connected to the support platform (302). The drive gear fixedly connected to the drive motor (301) meshes with the drive teeth on the outer periphery of the turntable (303). Two rock clamping rods (305) are symmetrically arranged on both sides of the liquid accumulation pool (402) on the upper part of the turntable (303). The rock clamping rods (305) are threadedly rotatably connected to the liquid accumulation pool (402). The rock clamping rods (305) can move into the liquid accumulation pool (402) through the threaded rotation to clamp the rock sample.

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