CN105043447B - Drilling tool test device under a kind of lunar surface environment - Google Patents

Drilling tool test device under a kind of lunar surface environment Download PDF

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Publication number
CN105043447B
CN105043447B CN201510490071.9A CN201510490071A CN105043447B CN 105043447 B CN105043447 B CN 105043447B CN 201510490071 A CN201510490071 A CN 201510490071A CN 105043447 B CN105043447 B CN 105043447B
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CN
China
Prior art keywords
sensor
drilling
joint
optical axis
drilling tool
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CN201510490071.9A
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Chinese (zh)
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CN105043447A (en
Inventor
丁希仑
张涛
徐坤
张武翔
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北京航空航天大学
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Publication of CN105043447A publication Critical patent/CN105043447A/en
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Abstract

The present invention discloses drilling tool test device under a kind of lunar surface environment, coaxially connected by drilling tool optical axis, optical axis joint, seal nipple, pigtail splice, sensor of composite forces, sensor connector, tool joint, drilling rod, drill bit successively from top to bottom.Conducting slip ring is socketed on drilling tool optical axis;Temperature sensor is circumferentially distributed in drilling rod inwall;Another 4 temperature sensors are installed on drill bit at 4 temperature measuring points, respectively drill bit and drilling rod contacting points position, creep into the drilling wall contacting points position of object and drill bit, drill bit outer wall and drilling object contact point position, cutting edge and the drilling object contact point position of drill bit.The signal wire of said temperature sensor and sensor of composite forces is drawn by conducting slip ring.Advantages of the present invention is:Drilling pressure, moment of torsion and temperature rise situation of the drilling tool under thermal vacuum environment can be measured in real time;Can be with the temperature rise situation of comprehensive reaction drilling tool;And successfully avoid in drilling tool rotation process, the problem of signal wire can be wrapped on drilling tool optical axis.

Description

Drilling tool test device under a kind of lunar surface environment
Technical field
The invention belongs to space resources field of detecting, it is related to drilling tool test device under a kind of lunar surface environment, and in particular to one Plant the test device of the pressure of the drill power of drilling tool, moment of torsion and temperature under vacuum high/low temperature environment.
Background technology
Since ancient times, people have just expressed the moon praise of the reverie and poetic atmosphere of true feelings, and the China before 3,000 years just has The legend that The Goddess Chang'e flew to the moon.The moon is always the preferred object of the astronomical activity of the mankind, is also that the mankind walk out earth cradle, vastness of marching toward The first step in universe.The moon is climbed up, permanent base is set up, is human development space resources, is explored more opportunity for survival vital Beginning.The U.S., the Soviet Union and Japan successively land on the moon, gather lunar soil sample and return.
In face of the lunar exploration upsurge of a new round, China has formulated goddess in the moon's lunar exploration plan of three-step-march:That is " around ", " falling ", " returning ", Wherein first two steps have been carried out.The main task of the Chinese phase of goddess in the moon's moon exploration program three is bored to launch unmanned lunar surface lander Sampling is taken, and the sample of collection is returned into the earth and carries out scientific research.Required according to project planning, drilling through for lander carrying is adopted Sample drilling tool, which need to reach, can creep into the deep lunar soil of at least 2m and gather sample.
The drilling process of ground environment, there is the preliminary exploration to drilling geological stratification in advance, chooses suitable drilling bottom. If the failures such as bit freezing, the burning of bits occurs in drilling process, staff can stop drilling in real time, change drilling tool, fix a breakdown.And bore Contain substantial amounts of steam in the soil sample adopted, drilling object thermal conductivity is larger, and can pass through the form auxiliary heat dissipation such as water filling, drilling tool The heat of generation can be good at transmission and diffusion.
Menology environment is extremely harsh, and atmospheric density only has the 1/1012 of earth environment, belongs to ultra-high vacuum environment.Menology temperature The meridian hour is spent up to 130 DEG C, and then as little as -180 DEG C of time-division at midnight, day and night temperature is up to 300 DEG C or so.The temperature of lunar soil, with The increase of depth, below 300mm is substantially constant at -30 DEG C or so, belongs to low temperature environment.Compared to the drilling of ground environment Can not be by the form auxiliary heat dissipation such as water filling during drilling under journey, menology environment, the high vacuum of lunar surface, lunar soil extreme difference in addition Thermal conductivity and solar radiation caused by harsh environments, and drill sampling menology stratum be full of non-intellectual, it is most likely that Lunar rock is met with, so that drilling tool reaches very high temperature in sampling process, the structural member destruction even burning of bits is caused, causes drilling Sample mission failure.In addition, too high temperature can also produce unknowable influence to lunar soil, sampling quality is directly affected.
How to verify drilling tool in lunar surface environment can reliably working, smoothly complete and drill through sampling task, it has also become it is current Urgent problem.
The content of the invention
The present invention is realizes drilling tool work reliable and stable under lunar surface environment, avoiding sampling fails, it is proposed that Yi Zhongyue Drilling tool test device under face ring border, realizes and carries out drilling through examination in a thermal vacuum environment for simulating moonscape sampling environment Test, measure, gather and analyze the temperature variations of drilling tool itself and surrounding environment in drilling process, grope drilling condition Maximum thermal boundary, recognizes propagation and the dissipation approach of heat, can be that the rational drilling tool design parameter of selection and drilling parameter are carried For foundation, reference is provided for drilling code research.
Drilling tool test device under lunar surface environment of the present invention, including conducting slip ring, drilling tool optical axis, optical axis joint, seal nipple, Pigtail splice, sensor of composite forces, sensor connector, tool joint, drilling rod, drill bit, thermocouple temperature sensor.Wherein, lead Electric slip ring is coaxially socketed on drilling tool optical axis;Drilling tool optical axis bottom is passed with optical axis joint, seal nipple, pigtail splice, composite force Sensor, sensor connector, tool joint are sequentially coaxially connected.The sensor of composite forces has drilling rod pressure measxurement and torque measuring Measure function.
Above-mentioned drilling rod internal circumferential is evenly equipped with thermocouple temperature sensor;4 thermocouple sensors, 4 are installed on drill bit Individual thermocouple sensor is located on drill bit at 4 temperature measuring points respectively, and it is respectively 1~No. 4 temperature measuring point to make 4 temperature measuring points, then:
No. 1 temperature measuring point is located at drill bit and drilling rod contacting points position.
No. 2 temperature measuring points are located at the drilling wall contacting points position of drilling object and drill bit.
No. 3 temperature measuring points are located at drill bit outer wall and drilling object contact point position.
No. 4 temperature measuring points are located at cutting edge and the drilling object contact point position of drill bit.
The signal wire of above-mentioned thermocouple temperature sensor and sensor of composite forces is drawn by conducting slip ring.
The advantage of the invention is that:
1st, drilling tool test device under lunar surface environment of the present invention, drilling of the drilling tool under thermal vacuum environment can be measured in real time Pressure, moment of torsion and temperature rise situation, and the data storage of collection is got up;
2nd, drilling tool test device under lunar surface environment of the present invention, thermocouple temperature sensor layout gamut covers drilling tool, heat Galvanic couple is directly contacted with drilling tool, can be with the temperature rise situation of comprehensive reaction drilling tool;
3rd, drilling tool test device under lunar surface environment of the present invention, is successfully avoided in drilling tool rotation process, and signal wire can be wound The problem of on drilling tool optical axis.
Brief description of the drawings
Fig. 1 is drilling tool test device overall structure diagram under lunar surface environment of the present invention;
Fig. 2 is drilling tool test device joint section view and internal cabling mode schematic diagram under lunar surface environment of the present invention;
Fig. 3 is optical axis joint in drilling tool test device under lunar surface environment of the present invention and seal nipple docking mode schematic diagram;
Fig. 4 is seal nipple in drilling tool test device under lunar surface environment of the present invention and pigtail splice docking mode schematic diagram;
Fig. 5 illustrates for sensor of composite forces in drilling tool test device under lunar surface environment of the present invention and pigtail splice docking mode Figure;
Fig. 6 shows for sensor connector in drilling tool test device under lunar surface environment of the present invention with sensor of composite forces docking mode It is intended to;
Fig. 7 illustrates for tool joint in drilling tool test device under lunar surface environment of the present invention and sensor connector docking mode Figure;
Fig. 8 be under lunar surface environment of the present invention in drilling tool test device 4 on drill bit at temperature measuring point position view;
Fig. 9 opens up position view for thermocouple mounting hole on drilling tool test device drill bit under lunar surface environment of the present invention;
Figure 10 is the installation of TC frock schematic diagram in drilling tool test device under lunar surface environment of the present invention;
Position is illustrated when Figure 11 stretches into drilling rod for the installation of TC frock in drilling tool test device under lunar surface environment of the present invention Figure;
Figure 12 is position is illustrated during the installation of TC frock laminating drilling rod in drilling tool test device under lunar surface environment of the present invention Figure;
Figure 13 is the signal transmission acquisition system structured flowchart of drilling tool test device under lunar surface environment of the present invention;
Mounting means schematic diagram when Figure 14 uses for drilling tool test device under lunar surface environment of the present invention.
In figure:
1- conducting slip ring 2- drilling tool optical axis 3- optical axis joints
4- seal nipple 5- pigtail splice 6- sensor of composite forces
7- sensor connector 8- tool joint 9- drilling rods
10- drill bit 11- thermocouple temperature sensor 12- aviation plugs
13- optical axis sealing ring 14- the installation of TC frocks
101- slip-ring rotor 102- slip ring stator 103- shift forks
104- noble metal 301- annular projections
401- circular groove 402- annular groove 403- round boss A
404- aviation plug mounting hole 501- detent 502- cable holes A
503- cylindrical projection A 504- screwed hole A 601- centre bores
602- through hole A 603- through hole B 701- cylindrical projections B
702- through hole C 704- round boss B 801- screwed holes B
802- recessed step 803- cable hole B 10a- drill bit hole walls
10b- cutting edge 10c- thermocouple mounting hole 10d- crossed beam trunkings
14a- the installation of TC grooves
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
Drilling tool test device under lunar surface environment of the present invention, including conducting slip ring 1, drilling tool optical axis 2, optical axis joint 3, sealing connect First 4, pigtail splice 5, sensor of composite forces 6, sensor connector 7, tool joint 8, drilling rod 9, drill bit 10, electric thermo-couple temperature sensing Device 11 and aviation plug 12, as shown in Figure 1 and Figure 2.
The conducting slip ring 1 is coaxially socketed on drilling tool optical axis 2, positioned at the top of drilling tool optical axis 2.Conducting slip ring 1 is existing There is product, with slip-ring rotor 101, slip ring stator 102, shift fork 103 and inside and outside two layers of tubular noble metal 104.Wherein, slip ring turns Sub 101 coaxial sleeves can be rotated in slip ring stator 102 relative to slip ring stator 102.2 phases of slip-ring rotor 101 and drilling tool optical axis Set, bottom and drilling tool optical axis 2 are circumferentially fixed.The top edge position of slip ring stator 102 is provided with U-shaped shift fork 103, shift fork 103 It is open and is fixed on the pivot pin in frame to coordinate, pivot pin is penetrated the opening of shift fork 103, realizes that the circumference of slip ring stator 102 is determined Position.Inside and outside two layers of noble metal 104 is located between slip-ring rotor 101 and slip ring stator 102;Internal layer noble metal 104 is fixed on slip ring On the outer wall of rotor 101;Internal layer noble metal 104 is fixed on the inwall of slip ring stator 102;Caused by inside and outside two layers of noble metal in cunning Rotor 101 is with that can be always maintained at contacting that (contact resistance is Ω grades of m well in the relative rotational motion of slip-ring rotor 102 Not) so that the signal wire of thermocouple temperature sensor 11 is constantly in conducting state, and avoids the rotation process of drilling tool optical axis 2 The signal wire of middle thermocouple temperature sensor 11 is wrapped in the outer surface of drilling tool optical axis 2.
The drilling tool optical axis 2 be hollow shaft, appearance finishing, it is smooth, can be coordinated with magnetic fluid, for dynamic sealing, Inner space is available for signal cable to pass through, and each sensor signal is transmitted to drilling tool by signal cable in drilling tool.Drilling tool light The bottom of axle 2 and optical axis joint 3, seal nipple 4, pigtail splice 5, sensor of composite forces 6, sensor connector 7, tool joint 8 according to It is secondary coaxially connected.Wherein, docked between optical axis joint 3 and the bottom of drilling tool optical axis 2 by left-hand thread, can effectively prevent from loosening, protect Demonstrate,prove the axiality of the two and the reliability of transmission process, stability.Pass through between pigtail splice 5, seal nipple 4 and optical axis joint 3 Fastening bolt is docked.Docked between sensor of composite forces 6 and pigtail splice 5 by fastening bolt, sensor of composite forces 6 has drilling rod 9 pressure measxurements and torque measurement function, for the pressure and moment of torsion that measurement drilling rod 9 is received in real time in the drilling process of drilling rod 9; The signal wire of sensor of composite forces after optical axis by conducting slip ring by being drawn.Tool joint 8, sensor connector 7 and composite force are passed Docked between sensor 6 by fastening bolt.Connected between the end of drilling rod 9 and tool joint 8 by left-hand thread;The drilling of drilling rod 9 end passes through Left-hand thread connects drill bit 10, can effectively prevent from loosening, it is ensured that the reliability and stability of transmission.
As shown in Figure 3, Figure 4, it is real in the following way between optical axis joint 3, seal nipple 4 and pigtail splice 5 in the present invention Now dock:Coaxial design has circular groove 401 on the upper surface of seal nipple 4, has annular groove in the periphery design of circular groove 401 402;Optical axis sealing ring 13 is pressed into annular groove 402.Optical axis joint 3 is that coaxial design has convex annular on tubular joint, lower surface Play 301.Make annular projection 301 and the circumferential cooperation of circular groove 401 during assembling, and make the end face of annular projection 301 and circle recessed The bottom surface of groove 401 is contacted;Meanwhile, the lower surface of optical axis joint 3 is contacted with the upper surface of seal nipple 4, by the lower surface of optical axis joint 3 by ring Connected in star 402 is sealed, and optical axis sealing ring 13 is pressed in annular groove 402.
The lower surface coaxial design of seal nipple 4 has round boss A403;The upper surface inner ring coaxial design of pigtail splice 5 has fixed Position groove 501.Make round boss A403 and the circumferential cooperation of detent 501 during assembling, and make round boss A403 end faces with determining The contact of the position bottom surface of groove 501;Meanwhile, the lower surface of seal nipple 4 is contacted with the upper surface of pigtail splice 5, can effectively ensure sealing The axiality of joint 4 and pigtail splice 5.The circumferential upper correspondence position of optical axis joint 3, seal nipple 4, pigtail splice 5 is evenly equipped with method Blue perforate;Fastening bolt through the flange perforate on optical axis joint 3, seal nipple 4 and pigtail splice 5, realize optical axis joint 3, Butt-joint locking between seal nipple 4 and pigtail splice 5.Effectively ensured by said structure optical axis joint 3, seal nipple 4 with Axiality between pigtail splice 5.The above-mentioned center of seal nipple 4 is designed with aviation plug mounting hole 404, and inside is provided with aviation Plug 12;Aviation plug 12 be used for vacuum chamber to non-real empty room signal transmission, can effectively ensure vacuum chamber sealing and The reliability of signal transmission.The inside of pigtail splice 5 has cable tray, and cable tray is connected with the upper surface of pigtail splice 5, and is drawn The cable hole A502 connected with cable tray is provided with the side wall of wire terminal 5;Signal wire for thermocouple temperature sensor 11 is walked Line.
As shown in figure 5, being achieved a butt joint in the following way between sensor of composite forces 6 and pigtail splice 5 in the present invention:Lead The lower surface coaxial design of joint 5 has cylindrical projection A503;On the lower surface of pigtail splice 5, positioned at cylindrical projection A503 peripheries week To uniform screwed hole A504;The circumferential upper and screwed hole A504 correspondence positions of sensor of composite forces 6 are designed with through hole A602;During assembling Cylindrical projection A503 and sensor of composite forces 6 centre bore 601 is coordinated grafting, and make the lower surface of pigtail splice 5 and composite force Fit the upper surface of sensor 6, it is ensured that the axiality of pigtail splice 5 and sensor of composite forces 6.Then passed through by fastening bolt logical Fixation is tightened with screwed hole A504 screw threads after the A602 of hole, sensor of composite forces 6 is locked with pigtail splice 5.
As shown in Figure 6, Figure 7, the present invention between tool joint 8, sensor connector 7 and sensor of composite forces 6 by as follows Mode achieves a butt joint:The center upper surface coaxial design of sensor connector 7 has cylindrical projection B701;The periphery of sensor of composite forces 6 is Through hole B603 is furnished with, the peripheral correspondence position of sensor connector 7 is circumferentially evenly equipped with through hole C702;The peripheral correspondence position of tool joint 8 Screwed hole B801 is evenly equipped with circumference.There is round boss B704 the lower surface of sensor connector 7, and the upper surface of tool joint 8 has Recessed step 802.During assembling, make cylindrical projection B701 and sensor of composite forces 6 grafting of centre bore 601, and make tool joint 8 Fitted with the lower surface of sensor of composite forces 6 upper surface.On round boss B701 and tool joint 8 in sensor connector 7 Recessed step 802 is circumferential to be coordinated, and round boss B701 end faces is contacted with the bottom surface of recessed step 802;Meanwhile, connect sensor First 7 lower surface is contacted with the upper surface of tool joint 8;Sensor of composite forces 6 and sensor are then sequentially passed through by trip bolt After through hole B603, through hole C702 on joint 7, fixation is tightened with the screwed hole B801 screw threads in tool joint 8, by tool joint 8th, locked between sensor connector 7 and sensor of composite forces 6.The above-mentioned inside of tool joint 8 has cable tray, and cable tray is with boring The top surface of knock-off joint 8 is connected, and the side wall of tool joint 8 is provided with the cable hole B803 connected with cable tray, for electric thermo-couple temperature The signal wire cabling of sensor 11.
The drilling rod 9 is internally provided with n roads thermocouple temperature sensor 11, and n is even number, the temperature for measuring drilling rod 9. It is circumferential that n roads thermocouple temperature sensor 11 is arranged in drilling rod 9 for the two-way thermocouple temperature sensor 11 in one group, every group two-by-two Relative position.And n roads thermocouple temperature sensor 11 is uniform in the internal circumferential of drilling rod 9.Can be effective using the method for symmetric configuration The damage for preventing one in every group of thermocouple temperature sensor 11 bring missing measurement, while one group of two thermocouple temperature The measured value of degree sensor, which is averaged, can improve the accuracy of measurement.
In said n routes thermocouple temperature sensor 11:
Distance of the measurement end of 1st group of thermocouple temperature sensor 11 apart from the bottom of drilling rod 9 is L1=a1
The measurement end of the 1st group of thermocouple temperature sensor 11 of measurement end distance of 2nd group of thermocouple temperature sensor 11 away from From for L2=a1
The measurement end of the 2nd group of thermocouple temperature sensor 11 of measurement end distance of 3rd group of thermocouple temperature sensor 11 away from From for L3=2a1
The measurement end of the 3rd group of thermocouple temperature sensor 11 of measurement end distance of 4th group of thermocouple temperature sensor 11 away from From for L4=2a1
By the 5th group, the measurement end of thermocouple temperature sensor 11 is apart from previous group thermocouple temperature sensor 11 Measurement end distance is obtained by following formula (1):
L2k+1=L2k-1+L2k-3, (k=2,3,4 ...) (1)
So that the high local thermograde of temperature is big in drilling rod 9, thermocouple temperature sensor 11 is laid out intensive, temperature Low local thermograde is small, the layout density of thermocouple temperature sensor 11, the effective accuracy for ensureing measurement.By above-mentioned The layout type of thermocouple temperature sensor 11, the drilling rod 9 of measurable random length can be according to appropriate initial value a1It is determined that in drilling rod The group number of thermocouple temperature sensor 11 is laid out on 9.
4 road thermocouple temperature sensors 11 are also equipped with the drill bit, measurement end is separately mounted to 4 on drill bit 10 At temperature measuring point.It is respectively No. 1~No. 4 temperature measuring points to make 4 temperature measuring points, then the position of 4 temperature measuring points, as shown in figure 8, being:
No. 1 temperature measuring point is located at drill bit 10 and the contacting points position of drilling rod 9, for measuring position at this, realizes drill bit 10 to brill Transmission temperature between bar 9.
No. 2 temperature measuring points are located at the drilling 10a wall contacting points positions of drilling object and drill bit 10, for measuring position at this Put, realize the temperature that drill bit 10 is transmitted to soil.
No. 3 temperature measuring points are located at the outer wall of drill bit 10 and drilling object contact point position, realize the temperature arrising caused by friction of the outer wall of drill bit 10 The measurement of situation.
No. 4 temperature measuring points are located at cutting edge 10b and the drilling object contact point position of drill bit 10, realize at the cutting edge of drill bit 10 Temperature rise situation measurement.
Actual temperature of the drill bit 10 in drilling process can accurately be measured by above-mentioned 4 road thermocouple temperature sensor 11 Degree.
As shown in figure 9, the measurement end of above-mentioned 4 thermocouple temperature sensors 11 penetrates the diameter 1mm opened up at temperature measuring point Thermocouple mounting hole 10c in and it is fixed, hole is filled with heat conductive silica gel, it is ensured that drill bit 10 and thermocouple temperature sensor Thermal conductance between 11.The signal wire of No. 1 and thermocouple temperature sensor 11 at No. 4 temperature measuring points is passed through by the side-wall hole of drilling rod 9, is pasted The annular crossed beam trunking 10d sides wall of the top design of drilling rod 9 is led in drilling rod 9.No. 2 sense with electric thermo-couple temperature at No. 3 temperature measuring points After the signal wire of device 11 is drawn by the annular crossed beam trunking 10d bottom surfaces of the top design of drilling rod 9, patch annular crossed beam trunking 10d sides wall is drawn To drilling rod 9.The signal wire of subsequent above-mentioned whole n roads thermocouple temperature sensor 11 is through the cable hole B803 in tool joint 8 After passing, the cable hole A502 on pigtail splice 5 is penetrated, and is connected with the plug end of aviation plug 12;The socket of aviation plug 12 Signal wire is drawn in the inside cabling of drilling tool optical axis 2 in end, and the wire hole opened up by the top of drilling tool optical axis 2 penetrates slip-ring rotor 101, It is weldingly fixed on along the radial direction of conducting slip ring 1 on inner ring noble metal 104;The correspondence signal wire of outer shroud noble metal 104 is through slip ring stator 102 Draw the signal output part as thermocouple temperature sensor 11.
Because the thermocouple temperature sensor 11 in drilling rod 9 uses Phosphoric Acid-Copper Oxide high temperature glue to be affixed directly to drilling rod 9 On inwall, it is ensured that directly contacted with drilling rod 9;But because the inner space of drilling rod 9 is narrow, length is oversize, therefore operating space is small, peace Dress is difficult.Therefore the arrangement in the present invention for convenience of the thermocouple temperature sensor 11 inside drilling rod 9, using an a quarter The installation of TC frock 14 of circumference is completed, and being provided with outer wall vertically in the outer wall of the installation of TC frock 14 is uniformly provided with thermoelectricity Even mounting groove 14a, groove depth 0.3mm, as shown in Figure 10.Electric thermo-couple temperature is pasted for convenience of with Phosphoric Acid-Copper Oxide high temperature glue Sensor, 60um thickness non cohesive gel material Teflons (polytetrafluoroethylene (PTFE)) are sprayed in the outer wall of the installation of TC frock 14, convenient Thermocouple temperature sensor 11 installs the separation of rear the installation of TC frock 14 and thermocouple temperature sensor 11.In thermoelectricity When even temperature sensor 11 is installed, drilling rod 9 is circumferentially divided into 4 regions, each region passes through the installation of TC frock 14 respectively Carry out the installation of thermocouple temperature sensor 11;When being installed, non cohesive gel is smeared in the outer wall of the installation of TC frock 14 first Thermocouple temperature sensor 11, is then arranged in the installation of TC groove 14a by material Teflon, then in electric thermo-couple temperature sensing The certain thickness Phosphoric Acid-Copper Oxide high temperature glue of the external application of device 11, by the viscosity and self gravitation of colloid so that thermocouple temperature Degree sensor 11 is attached in the installation of TC groove 14a.Then, frock is stretched into along the center of drilling rod 9, to two ends and the two ends of drilling rod 9 Flush, the installation of TC frock 14 is then touched into the inwall of drilling rod 9, as shown in Figure 11,12, and by 14 liang of the installation of TC frock Blocked, kept for two hours at room temperature by fixture between end and the two ends of drilling rod 9, treat that the high temperature of resistance to Phosphoric Acid-Copper Oxide glue is consolidated Change, it is substantially not viscous with Phosphoric Acid-Copper Oxide high temperature glue because the external spray of the installation of TC frock 14 has Teflon material Connect, therefore the installation of TC frock 14 can be removed smoothly.The merogenesis of drilling rod 9 finally is stretched into vacuum drying chamber to carry out further Solidification.
As described in Figure 13, the signal transmission of drilling tool test device is gathered under lunar surface environment of the present invention, is transmitted and gathered by signal System realization, the temperature signal that thermocouple temperature sensor 11 is obtained, the pressure of the drill force signal and torsion that sensor of composite forces 6 is obtained Square signal is transmitted separately to temperature polling instrument 15 by conducting slip ring 1, bores pressure amplifier 16 and torque amplification 17.Temperature is patrolled RS485 communication interface of the instrument 15 by outfit is examined, temperature information is transmitted to host computer 19 in real time and is shown and is stored;Bore Pressure amplifier 16 respectively inputs the pressure of the drill force signal and torque signal to data collecting card 18 with torque amplification 17, and data are adopted The pressure of the drill force signal and torque signal are transmitted to host computer 19 and carried out in real time by truck 18 by the ethernet communication port of outfit Display and storage.RS485 is communicated and ethernet communication can transmit distance (being more than 100m) remote enough so that the energy of host computer 19 Enough have distance remote enough with temperature polling instrument 15 and data collecting card 18, it is convenient show and storage host computer 19 be placed in compared with Remote control computer room.
When using drilling tool test device under lunar surface environment of the present invention, the upper end of drilling tool optical axis 2 is docked with rig, is placed in magnetic current In body dynamic sealing device, magnetic fluid can realize the dynamic sealing rotated to drilling tool optical axis 2 with upper and lower translation, so that the moon of the invention Drilling tool test device can carry out drilling through the experiment of sampling in closed thermal vacuum environment under face ring border.

Claims (8)

1. drilling tool test device under a kind of lunar surface environment, it is characterised in that:Including conducting slip ring, drilling tool optical axis, optical axis joint, close Sealing joint, pigtail splice, sensor of composite forces, sensor connector, tool joint, drilling rod, drill bit, thermocouple temperature sensor; Wherein, conducting slip ring is coaxially socketed on drilling tool optical axis;It is drilling tool optical axis bottom and optical axis joint, seal nipple, pigtail splice, multiple Sensor, sensor connector, tool joint are sequentially coaxially connected with joint efforts;The sensor of composite forces have drilling rod pressure measxurement with Torque measurement function;
Above-mentioned drilling rod internal circumferential is evenly equipped with thermocouple temperature sensor;4 thermocouple temperature sensors, 4 are installed on drill bit Individual thermocouple temperature sensor is located on drill bit at 4 temperature measuring points respectively, and it is respectively 1~No. 4 temperature measuring point to make 4 temperature measuring points, then:
No. 1 temperature measuring point is located at drill bit and drilling rod contacting points position;
No. 2 temperature measuring points are located at the drilling wall contacting points position of drilling object and drill bit;
No. 3 temperature measuring points are located at drill bit outer wall and drilling object contact point position;
No. 4 temperature measuring points are located at cutting edge and the drilling object contact point position of drill bit;
The signal wire of above-mentioned thermocouple temperature sensor and sensor of composite forces is drawn by conducting slip ring;
Achieved a butt joint in the following way between above-mentioned optical axis joint, seal nipple and pigtail splice:It is same on seal nipple upper surface Axle is designed with circular groove, has annular groove in circular groove periphery design;Optical axis sealing ring is pressed into annular groove;Optical axis joint For tubular joint, coaxial design has annular protrusion on lower surface;Annular projection is circumferentially coordinated with circular groove during assembling, and make The end face of annular projection is contacted with circular groove bottom surface;Meanwhile, optical axis joint lower surface is contacted with seal nipple upper surface, by light Shaft coupling lower surface seals annular groove, and optical axis sealing ring is pressed in annular groove;Seal nipple lower surface is coaxial It is designed with round boss A;Pigtail splice upper surface inner ring coaxial design has detent;Make round boss A and positioning during assembling Groove circumferentially coordinates, and round boss A end faces is contacted with detent bottom surface;Meanwhile, seal nipple lower surface connects with lead The contact of head upper surface, can effectively ensure the axiality of seal nipple and pigtail splice;Optical axis joint, seal nipple, lead connect The circumferential upper correspondence position of head is evenly equipped with flange perforate;Fastening bolt passes through the method on optical axis joint, seal nipple and pigtail splice Blue perforate, realizes the butt-joint locking between optical axis joint, seal nipple and pigtail splice;
Achieved a butt joint in the following way between above-mentioned tool joint, sensor connector and sensor of composite forces:In sensor connector End face coaxial design has cylindrical projection B in the heart;Sensor of composite forces periphery is evenly equipped with through hole B, sensor connector periphery correspondence position Put and be circumferentially evenly equipped with through hole C;Screwed hole B is evenly equipped with the correspondence position circumference of tool joint periphery;The lower surface of sensor connector There is round boss B, tool joint upper surface has recessed step;During assembling, make the center of cylindrical projection B and sensor of composite forces Hole grafting, and tool joint upper surface is fitted with the lower surface of sensor of composite forces;Round boss B in sensor connector with Recessed step in tool joint circumferentially coordinates, and round boss B end faces is contacted with recessed step bottom surface;Meanwhile, make sensing Device joint lower surface is contacted with tool joint upper surface;Sensor of composite forces and sensor are then sequentially passed through by trip bolt After through hole B, through hole C on joint, fixation is tightened with the screwed hole B screw threads in tool joint, by tool joint, sensor connector Locked between sensor of composite forces.
2. drilling tool test device under a kind of lunar surface environment as claimed in claim 1, it is characterised in that:The sensor of composite forces with Achieved a butt joint in the following way between pigtail splice:Pigtail splice lower surface coaxial design has cylindrical projection A;Under pigtail splice On end face, positioned at the circumferential uniform screwed hole A in cylindrical projection A peripheries;Sensor of composite forces is circumferentially upper to be set with screwed hole A correspondence positions In respect of through hole A;The centre bore of cylindrical projection A and sensor of composite forces is coordinated grafting during assembling, and make pigtail splice lower surface Fitted with sensor of composite forces upper surface, it is ensured that the axiality of pigtail splice and sensor of composite forces;Then pass through fastening bolt Fixation is tightened with screwed hole A screw threads after through through hole A, sensor of composite forces and pigtail splice are locked.
3. drilling tool test device under a kind of lunar surface environment as claimed in claim 1, it is characterised in that:The optical axis joint and drilling tool Optical axis is docked between bottom by left-hand thread;Connected between drilling rod end and tool joint by left-hand thread;Rod boring end passes through anti- It is threadedly coupled drill bit.
4. drilling tool test device under a kind of lunar surface environment as claimed in claim 1, it is characterised in that:Whole electric thermo-couple temperatures The signal wire cabling of sensor is behind drilling rod inside, and the cable hole B in tool joint is passed, the cabling on pigtail splice Hole A is penetrated, and is connected with the plug end of aviation plug in seal nipple;The socket end of aviation plug draws signal wire through drilling tool optical axis Interior, the wire hole opened up by drilling tool optical axis top is drawn after passing by conducting slip ring.
5. drilling tool test device under a kind of lunar surface environment as claimed in claim 1, it is characterised in that:The signal of sensor of composite forces Line behind drilling tool optical axis inside by conducting slip ring by being drawn.
6. drilling tool test device under a kind of lunar surface environment as claimed in claim 1, it is characterised in that:The drilling rod internal circumferential is equal It is furnished with thermocouple temperature sensor and is arranged in the circumferential phase of drilling rod two-by-two for the two-way thermocouple temperature sensor in one group, every group To position.
7. drilling tool test device under a kind of lunar surface environment as claimed in claim 6, it is characterised in that:The drilling rod internal circumferential is equal It is furnished with thermocouple temperature sensor:
Distance of the measurement end of 1st group of thermocouple temperature sensor apart from drilling rod bottom is L1=a1
The measurement end distance of the 1st group of thermocouple temperature sensor of measurement end distance of the 2nd group of thermocouple temperature sensor is L2= a1
The measurement end distance of the 2nd group of thermocouple temperature sensor of measurement end distance of the 3rd group of thermocouple temperature sensor is L3= 2a1
The measurement end distance of the 3rd group of thermocouple temperature sensor of measurement end distance of the 4th group of thermocouple temperature sensor is L4= 2a1
By the 5th group, the measurement end of thermocouple temperature sensor apart from previous group thermocouple temperature sensor measurement end away from Obtained from by following formula (1):
L2k+1=L2k-1+L2k-3, k=2,3,4 ... (1)
Above-mentioned a1For the initial value of setting.
8. drilling tool test device under a kind of lunar surface environment as claimed in claim 1, it is characterised in that:Also there is signal to transmit collection System, including temperature polling instrument, brill pressure amplifier, torque amplification, data collecting card and host computer;
The temperature signal that thermocouple temperature sensor is obtained;The pressure of the drill force signal and torque signal that sensor of composite forces is obtained are equal Temperature polling instrument is transmitted separately to by conducting slip ring, pressure amplifier and torque amplification is bored;Temperature polling instrument is by temperature information Transmit in real time to host computer and shown and stored;Pressure amplifier is bored with torque amplification respectively by the pressure of the drill force signal with turning round Square signal is inputted to data collecting card, and the pressure of the drill force signal and torque signal are transmitted to host computer and carried out in real time by data collecting card Display and storage.
CN201510490071.9A 2015-08-11 2015-08-11 Drilling tool test device under a kind of lunar surface environment CN105043447B (en)

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