阅读说明：本技术 一种带有齿轮限位脱钩结构的行星轮传动装置 (Planet wheel transmission device with gear limiting unhooking structure ) 是由 孙英雪 于 2020-12-15 设计创作，主要内容包括：本发明公开了一种带有齿轮限位脱钩结构的行星轮传动装置,包括齿套,所述齿套的内部设置有动力源机构,所述齿套的一端设置有传动机构,所述传动机构的另一端设置有破冰机构,动力源机构包括有动力轴,所述动力轴的表面分别设置有太阳轮一、太阳轮二和太阳轮三,所述太阳轮一的表面设置有行星组一,所述太阳轮二的表面设置有行星组二,所述太阳轮三的表面设置有行星组三,所述太阳轮一的直径大于太阳轮二,所述太阳轮二的直径大于太阳轮三,行星组一包括有支撑板一,所述支撑板一的一侧轴承连接有若干行星齿轮一,所述行星组二包括有支撑板二,本发明,具有实用性强和可自动调整工作转速的特点。(The invention discloses a planet wheel transmission device with a gear limiting unhooking structure, which comprises a gear sleeve, a power source mechanism is arranged inside the gear sleeve, a transmission mechanism is arranged at one end of the gear sleeve, the other end of the transmission mechanism is provided with an ice breaking mechanism, the power source mechanism comprises a power shaft, the surface of the power shaft is respectively provided with a first sun wheel, a second sun wheel and a third sun wheel, a first planet set is arranged on the surface of the first sun gear, a second planet set is arranged on the surface of the second sun gear, the surface of the third sun gear is provided with a third planet group, the diameter of the first sun gear is larger than that of the second sun gear, the diameter of the second sun gear is larger than that of the third sun gear, the first planet set comprises a first support plate, a plurality of first planet gears are connected with one side of the first support plate through bearings, the planet group II comprises a support plate II, and the invention has the characteristics of strong practicability and capability of automatically adjusting the working rotating speed.)

1. The utility model provides a planet wheel transmission with spacing unhook structure of gear which characterized in that: the ice breaking device is characterized by comprising a gear sleeve (4), wherein a power source mechanism is arranged inside the gear sleeve (4), a transmission mechanism is arranged at one end of the gear sleeve (4), and an ice breaking mechanism is arranged at the other end of the transmission mechanism.

2. The planetary gear transmission device with the gear limiting unhooking structure as claimed in claim 1, wherein: the power source mechanism comprises a power shaft (6), wherein a first sun gear (10), a second sun gear (11) and a third sun gear (12) are respectively arranged on the surface of the power shaft (6), a first planet set (7) is arranged on the surface of the first sun gear (10), a second planet set (8) is arranged on the surface of the second sun gear (11), a third planet set (9) is arranged on the surface of the third sun gear (12), the diameter of the first sun gear (10) is larger than that of the second sun gear (11), and the diameter of the second sun gear (11) is larger than that of the third sun gear (12).

3. The planetary gear transmission device with the gear limiting unhooking structure as claimed in claim 2, wherein: the planet group one (7) is including the backup pad one, one side bearing of backup pad one is connected with a plurality of planetary gear one, planet group two (8) are including backup pad two, one side bearing of backup pad two is connected with a plurality of planetary gear two, planet group three (9) are including the backup pad three, one side bearing of backup pad three is connected with a plurality of planetary gear three, planetary gear one, planetary gear two and planetary gear three all are the cooperation structure with tooth cover (4), backup pad one, backup pad two and backup pad three are fixed knot and construct.

4. The planetary gear transmission device with the gear limiting unhooking structure as claimed in claim 3, wherein: the transmission mechanism comprises a transmission sleeve (5), the ice breaking mechanism comprises a drilling barrel (1), the transmission sleeve (5) is located on the surface of a tooth sleeve (4), the drilling barrel (1) is fixed to one side of the transmission sleeve (5), and saw teeth (2) are arranged at the bottom of the drilling barrel (1).

5. The planetary gear transmission device with the gear limiting unhooking structure as claimed in claim 4, wherein: the inner wall of transmission cover (5) evenly is provided with a plurality of draw-in grooves (17), and is a plurality of be provided with between draw-in groove (17) and hinder piece (27), a plurality of negative pressure chamber (28) have evenly been seted up to the inside of tooth cover (4), and is a plurality of the inside in negative pressure chamber (28) all is provided with piston (16), and is a plurality of the one end of piston (16) all is provided with negative pressure spring (29), and is a plurality of the other end of piston (16) all is provided with card ball (15), card ball (15) are the cooperation structure with draw-in groove (17).

6. The planetary gear transmission device with the gear limiting unhooking structure as claimed in claim 5, wherein: the utility model discloses a power shaft, including power shaft (6), power shaft (6) inside is provided with hydraulic pressure chamber (25), the inside in hydraulic pressure chamber (25) is provided with sliding magnet (26), keyway (13) have all been seted up to the centre of sun gear (10), sun gear (11) and sun gear (12), the surface of power shaft (6) is provided with sliding spline (14), sliding spline (14) are the cooperation structure with three key ways of group (13), sliding spline (14) are made for the magnetism material, sliding spline (14) and sliding magnet (26) are the cooperation structure.

7. The planetary gear transmission device with the gear limiting unhooking structure as claimed in claim 6, wherein: one side of transmission cover (5) is provided with distributing valve (18), the inside of distributing valve (18) is divided into left cavity and right cavity, all be provided with spacing groove one in the middle of the inner wall of left side cavity and right cavity, the inner wall bottom of left side cavity and right cavity all is provided with spacing groove two, the inside of left side cavity is provided with valve body one (19), the inside of right side cavity is provided with valve body two (20), valve body one (19) and valve body two (20) are the cooperation structure with spacing groove one and spacing groove two respectively, valve body one (19) and valve body two (20) are extending structure, valve body one (19) and the bottom of valve body two (20) all are provided with supporting spring.

8. The planetary gear transmission device with the gear limiting unhooking structure as claimed in claim 7, wherein: the hydraulic control device is characterized in that a first hydraulic pipe (23) is arranged below the left chamber, a second hydraulic pipe (24) is arranged below the right chamber, the first hydraulic pipe (23) is connected with a left pipeline of the hydraulic chamber (25), and the second hydraulic pipe (24) is connected with a right pipeline of the hydraulic chamber (25).

9. The planetary gear transmission device with the gear limiting unhooking structure as claimed in claim 8, wherein: the top of valve body (19) is provided with negative pressure pipe one (21), the top of valve body two (20) is provided with negative pressure pipe two (22), the other end of negative pressure pipe one (21) and the top pipe connection in negative pressure chamber (28), the other end of negative pressure pipe two (22) and the terminal pipe connection in negative pressure chamber (28).

10. The planetary gear transmission device with the gear limit unhooking structure as claimed in claim 9, wherein: the surface of boring bucket (1) is provided with the helicla flute, the end and the tooth cover (4) pipe connection of helicla flute, the inside of boring bucket (1) and the bottom of sawtooth (2) all are provided with outlet (3), one side of tooth cover (4) is provided with the drain pipe, drain pipe and outlet (3) pipe connection, the below of sawtooth (2) still is provided with the ore detector, it has auxiliary pipeline to bore inside outlet (3) department of bucket (1), auxiliary pipeline's end is provided with the auxiliary tank, the centre of auxiliary pipeline is provided with the synchro valve, the synchro valve is pipe connection with tooth cover (4).

Technical Field

The invention relates to the technical field of planetary gear transmission, in particular to a planetary gear transmission device with a gear limiting unhooking structure.

Background

Antarctic continent is a continent covered by long-term ice and snow, and contains abundant mineral resources, and since the 60's of 18 th century, countries in the world compete to Antarctic continent exploration and investigation, China officially sent scientific investigation ship in 1985 arrives at Antarctic investigation and establishes a Antarctic China great wall station, and in 1989, a Antarctic Zhongshan station is established, and drilling is one of important methods for Antarctic investigation;

when probing the ice sheet, because the ice sheet freeze time is different, can cause the hardness between the different ice sheets also different, and in current drilling equipment, can only keep same rotational speed drilling, and personnel can't know drill bit position ice sheet hardness in time again, can cause rig overload work when meetting the higher ice sheet of hardness like this, when meetting the lower ice sheet of hardness, then can cause idle rig power, reduce work efficiency's problem, consequently, it is very necessary to design a planet wheel transmission with spacing unhook structure of gear that the practicality is strong and can automatic adjustment operating speed.

Disclosure of Invention

The invention aims to provide a planetary gear transmission device with a gear limiting unhooking structure, and aims to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a planet wheel transmission with spacing unhook structure of gear, includes the tooth cover, the inside of tooth cover is provided with power source mechanism, the one end of tooth cover is provided with drive mechanism, drive mechanism's the other end is provided with the mechanism that opens ice.

According to the technical scheme, the power source mechanism comprises a power shaft, wherein a first sun gear, a second sun gear and a third sun gear are respectively arranged on the surface of the power shaft, a first planet group is arranged on the surface of the first sun gear, a second planet group is arranged on the surface of the second sun gear, a third planet group is arranged on the surface of the third sun gear, the diameter of the first sun gear is larger than that of the second sun gear, and the diameter of the second sun gear is larger than that of the third sun gear.

According to the technical scheme, the first planet group comprises a first support plate, a bearing on one side of the first support plate is connected with a first plurality of planet gears, the second planet group comprises a second support plate, a bearing on one side of the second support plate is connected with a second plurality of planet gears, the third planet group comprises a third support plate, a bearing on one side of the third support plate is connected with a third plurality of planet gears, the first planet gears, the second planet gears and the third planet gears are all in matched structures with gear sleeves, and the first support plate, the second support plate and the third support plate are fixed structures.

According to the technical scheme, the transmission mechanism comprises a transmission sleeve, the ice breaking mechanism comprises a drill barrel, the transmission sleeve is located on the surface of the gear sleeve, the drill barrel is fixed to one side of the transmission sleeve, and saw teeth are arranged at the bottom of the drill barrel.

According to the technical scheme, the inner wall of the transmission sleeve is evenly provided with a plurality of clamping grooves, a plurality of blocking blocks are arranged between the clamping grooves, a plurality of negative pressure cavities are evenly formed in the tooth sleeve, a plurality of pistons are arranged in the negative pressure cavities, a plurality of negative pressure springs are arranged at one ends of the pistons, a plurality of clamping balls are arranged at the other ends of the pistons, and the clamping balls and the clamping grooves are of a matched structure.

According to the technical scheme, the hydraulic pressure chamber is arranged in the power shaft, the sliding magnet is arranged in the hydraulic pressure chamber, key grooves are formed in the middles of the first sun gear, the second sun gear and the third sun gear, the sliding spline is arranged on the surface of the power shaft, the sliding spline and the three groups of key grooves are of a matched structure, the sliding spline is made of a magnetic material, and the sliding spline and the sliding magnet are of a matched structure.

According to the technical scheme, one side of transmission sleeve is provided with the distributing valve, the inside of distributing valve is divided into left cavity and right cavity, all be provided with spacing groove one in the middle of the inner wall of left cavity and right cavity, the inner wall bottom of left cavity and right cavity all is provided with spacing groove two, the inside of left cavity is provided with valve body one, the inside of right cavity is provided with valve body two, valve body one and valve body two are the cooperation structure with spacing groove one and spacing groove two respectively, valve body one is extending structure with valve body two, valve body one all is provided with supporting spring with the bottom of valve body two.

According to the technical scheme, a first hydraulic pipe is arranged below the left cavity, a second hydraulic pipe is arranged below the right cavity, the first hydraulic pipe is connected with a left pipeline of the hydraulic cavity, and the second hydraulic pipe is connected with a right pipeline of the hydraulic cavity.

According to the technical scheme, the top of the first valve body is provided with the first negative pressure pipe, the top of the second valve body is provided with the second negative pressure pipe, the other end of the first negative pressure pipe is connected with a top pipeline of the negative pressure cavity, and the other end of the second negative pressure pipe is connected with a tail end pipeline of the negative pressure cavity.

According to the technical scheme, the surface of boring the bucket is provided with the helicla flute, the end and the tooth cover pipe connection of helicla flute, the inside of boring the bucket and the bottom of sawtooth all are provided with the outlet, one side of tooth cover is provided with the drain pipe, drain pipe and outlet pipe connection, the below of sawtooth still is provided with the ore detector, bore the inside drain pipe department of bucket and be connected with auxiliary pipeline, auxiliary pipeline's end is provided with supplementary case, auxiliary pipeline's centre is provided with the synchronizing valve, the synchronizing valve is pipe connection with the tooth cover.

Compared with the prior art, the invention has the following beneficial effects: the working rotating speed can be automatically adjusted, and the invention,

(1) through being provided with each planet group and each sun gear, can adjust the cooperation of different sun gears rather than the planet group that corresponds according to the hardness of the ice sheet of difference, can guarantee like this and bore the bucket and can normally work in the time, keep the highest work efficiency.

(2) The clamping ball and the clamping groove are arranged, so that the drilling barrel can drill a high-hardness ice layer better, and can be automatically stopped after the drilling barrel exceeds the workload of the drilling barrel, and the driving motor is prevented from being damaged due to long-time overload work;

(3) the hydraulic cavity is arranged, hydraulic oil is injected into different positions of the hydraulic cavity, the sliding spline can be adjusted to be matched with different sun gears, so that the purpose of adjusting the output rotating speed can be achieved, meanwhile, the sliding spline is driven by the sliding magnet, and the sliding spline is not in direct contact with the sliding magnet, so that oil leakage which possibly occurs when the sliding spline moves can be avoided, and the damage of the hydraulic oil to the Antarctic environment can be avoided;

(4) through the arrangement of the negative pressure cavity and the distribution valve, the hardness of an ice layer drilled at the moment of the drilling barrel can be automatically judged through the matching condition of each clamping ball and the clamping groove in the negative pressure cavity, the required rotating speed can be automatically adjusted, and meanwhile, the length distance of one sun wheel can be just moved by the sliding magnet through the volume of hydraulic oil between each valve body and each limiting groove, so that the situation that the sun wheels are simultaneously rotated but clamped due to different rotating speeds due to the fact that the sliding spline is simultaneously matched with the two sun wheels can be prevented;

(5) by arranging the spiral groove, ice slag can be generated in the drilling process of the drilling barrel, and can enter the gear sleeve through the spiral groove, cool the working gear and lubricate the gear in matching, so that lubricating oil is not needed, and the pollution of the lubricating oil to the Antarctic environment can be avoided;

(6) through being provided with the outlet, can be when boring the bucket rotation, for boring to provide the liquid separating film of one deck between bucket inner wall and the inside icicle, can reduce the icicle like this to boring the inside friction of bucket, reduce the waste of energy consumption, after the probing, these water will freeze again with boring bucket inner wall at low temperature, at this moment will bore the bucket and take out its inside icicle, for the research, and need not other equipment of rethread and cut off the icicle bottom, can let the scientific investigation team member can reduce carrying of instrument, alleviate personnel's burden, simultaneously because the water that freezes is icicle itself, consequently can not cause the influence to subsequent icicle research yet.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic front view of the drill barrel of the present invention;

FIG. 2 is a partial schematic structural view of the power source mechanism of the present invention;

FIG. 3 is a partial schematic view of the power shaft of the present invention;

FIG. 4 is a schematic illustration of the plumbing connections of the power source mechanism and the transmission mechanism of the present invention;

in the figure: 1. drilling a barrel; 2. saw teeth; 3. a water outlet; 4. a gear sleeve; 5. a transmission sleeve; 6. a power shaft; 7. a first planet set; 8. a second planet group; 9. a third planet group; 10. a first sun gear; 11. a second sun gear; 12. a third sun gear; 13. a keyway; 14. a sliding spline; 15. blocking the ball; 16. a piston; 17. a card slot; 18. a dispensing valve; 19. a first valve body; 20. a second valve body; 21. a first negative pressure pipe; 22. a second negative pressure pipe; 23. a first hydraulic pipe; 24. a second hydraulic pipe; 25. a hydraulic chamber; 26. a sliding magnet; 27. blocking; 28. a negative pressure chamber; 29. a negative pressure spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 2 and 3, the present invention provides the following technical solutions: a planet wheel transmission device with a gear limiting unhooking structure comprises a power shaft 6, wherein the surface of the power shaft 6 is respectively provided with a first sun wheel 10, a second sun wheel 11 and a third sun wheel 12, the surface of the first sun wheel 10 is provided with a first planet group 7, the surface of the second sun wheel 11 is provided with a second planet group 8, the surface of the third sun wheel 12 is provided with a third planet group 9, the diameter of the first sun wheel 10 is larger than that of the second sun wheel 11, the diameter of the second sun wheel 11 is larger than that of the third sun wheel 12, the first planet group 7 comprises a first support plate, one side of the first support plate is in bearing connection with a plurality of first planet gears 8, the second planet groups 8 comprise a second support plate, one side of the second support plate is in bearing connection with a plurality of second planet gears 9, one side of the third support plate is in bearing connection with a plurality of third planet gears, and the first planet gears, the second planet gears and the third, the first support plate, the second support plate and the third support plate are all fixed structures, when the drilling machine works, the power shaft provides power for the whole gear set, the power shaft only drives one sun gear to rotate, the rotating sun gear drives the corresponding planetary set to rotate, the planetary set can transmit the planetary gears inside the planetary set to the gear sleeve in rotation, so that the effect of power transmission is achieved, the hardness of different ice layers is different due to different freezing time of the ice layers, when the front end of the drilling barrel encounters the ice layer with higher hardness, the power shaft can drive the third sun gear to rotate, the diameter of the third sun gear is smaller, the diameters of the three planetary gears in the third planetary set are larger, the rotating speed of the power shaft finally transmitted to the gear sleeve is reduced, the torque is increased, and the drilling barrel can drill the ice layer with higher hardness at low rotating speed and high torque, on the contrary, when the ice layer is soft, the power shaft can be made to drive the sun gear to rotate, at the moment, the diameter of the sun gear is larger, and the diameter of the planet gear in the planet group I is smaller, so that the rotating speed finally transmitted to the gear sleeve by the power shaft is increased, and the working efficiency can be increased when the ice layer with lower hardness is drilled;

referring to fig. 1-3, the transmission mechanism includes a transmission sleeve 5, the ice breaking mechanism includes a drill barrel 1, the transmission sleeve 5 is located on the surface of a gear sleeve 4, the drill barrel 1 is fixed with one side of the transmission sleeve 5, the bottom of the drill barrel 1 is provided with saw teeth 2, when in work, a driving motor drives a power shaft to rotate, the power shaft provides constant power, then the power shaft drives planetary gear sets with different diameters to rotate according to different hardness of an ice layer, so as to drive the gear sleeve to rotate at different speeds, in the rotation process of the gear sleeve, the transmission sleeve drives the drill barrel at the tail end of the transmission sleeve to rotate at the same rotating speed, so as to drill the ice layer by the drill barrel;

referring to fig. 2 and 4, a plurality of clamping grooves 17 are uniformly formed in the inner wall of the transmission sleeve 5, a blocking block 27 is arranged between the clamping grooves 17, a plurality of negative pressure cavities 28 are uniformly formed in the gear sleeve 4, pistons 16 are arranged in the negative pressure cavities 28, a negative pressure spring 29 is arranged at one end of each piston 16, a blocking ball 15 is arranged at the other end of each piston 16, the blocking ball 15 and the clamping grooves 17 are of a matching structure, the pistons are ejected by the negative pressure springs in the matching transmission process of the gear sleeve and the transmission sleeve, and then the blocking balls are ejected by the pistons, the blocking balls are blocked in the clamping grooves in the inner wall of the transmission sleeve, when the gear sleeve rotates, the blocking balls rotate along with the gear sleeve, when the blocking blocks rotate to the blocking blocks, the blocking blocks are driven by the gear sleeve to rotate, so that the effect that the transmission shaft is driven by the gear sleeve is achieved, when the drilling barrel encounters an ice layer with higher hardness in downward drilling, the resistance on the, at the moment, the pressure between the blocking ball and the blocking block is increased, when the hardness of the ice layer is too high, the resistance force borne by the drilling barrel exceeds the elastic force of the negative pressure spring to the blocking ball, the blocking ball is extruded into the negative pressure cavity at the moment, the gear sleeve cannot drive the transmission sleeve to rotate, and therefore the gear sleeve can keep an idle state until the rotating speed of the gear sleeve is reduced, the gear sleeve can drive the drilling barrel to rotate at a low rotating speed and at a high torque, the drilling barrel can well drill the high-hardness ice layer, the drilling barrel can also automatically stop after exceeding the working load of the drilling barrel, and the driving motor is prevented from being damaged due to long-time overload work;

referring to fig. 3 and 4, a hydraulic chamber 25 is arranged inside the power shaft 6, a sliding magnet 26 is arranged inside the hydraulic chamber 25, key slots 13 are formed in the middles of the first sun gear 10, the second sun gear 11 and the third sun gear 12, a sliding spline 14 is arranged on the surface of the power shaft 6, the sliding spline 14 and the three key slots 13 are in a matching structure, the sliding spline 14 is made of a magnetic material, the sliding spline 14 and the sliding magnet 26 are in a matching structure, when the drilling barrel encounters an ice layer with higher hardness, a low rotation speed is required, at the moment, hydraulic oil on the left side of the hydraulic chamber can be discharged through a first hydraulic pipe, hydraulic oil on the right side of the hydraulic chamber can push the sliding magnet to move to the left, then the sliding magnet can adsorb the sliding spline on the surface of the power shaft to move to the left, the sliding spline can be matched with the key slot in the middle of the third sun gear, at the moment, the rotation, in conclusion, the sliding spline can be adjusted to be matched with different sun wheels by injecting hydraulic oil into different positions of the hydraulic cavity, so that the purpose of adjusting the output rotating speed can be achieved, and meanwhile, as the sliding spline is driven by the sliding magnet, the sliding spline is not in direct contact with the sliding magnet, the possible oil leakage of the sliding spline during moving can be avoided, and the damage of the hydraulic oil to the Antarctic environment can be avoided;

referring to fig. 3 and 4, a distribution valve 18 is arranged on one side of a transmission sleeve 5, the interior of the distribution valve 18 is divided into a left chamber and a right chamber, a first limit groove is formed in the middle of the inner walls of the left chamber and the right chamber, a second limit groove is formed in the bottom of the inner walls of the left chamber and the right chamber, a first valve body 19 is arranged in the left chamber, a second valve body 20 is arranged in the right chamber, the first valve body 19 and the second valve body 20 are respectively matched with the first limit groove and the second limit groove, the first valve body 19 and the second valve body 20 are both in a telescopic structure, a support spring is arranged at the bottom of the first valve body 19 and the second valve body 20, a first hydraulic pipe 23 is arranged below the left chamber, a second hydraulic pipe 24 is arranged below the right chamber, the first hydraulic pipe 23 is connected with a left pipeline of a hydraulic chamber 25, the second hydraulic pipe 24 is connected with a right pipeline of the hydraulic chamber 25, a first negative pressure pipe 21 is arranged at the, the other end of the first negative pressure pipe 21 is connected with a top pipeline of the negative pressure cavity 28, the other end of the second negative pressure pipe 22 is connected with a tail end pipeline of the negative pressure cavity 28, when the drill barrel encounters an ice layer with higher strength, and the resistance between the drill barrel and the ice layer is larger than the elastic force of the negative pressure spring, the clamping ball will be extruded into the negative pressure cavity, in the process, the clamping ball will push the piston to move towards the bottom of the negative pressure cavity, at the moment, one side, close to the clamping ball, of the piston in the negative pressure cavity will generate negative pressure suction to the second negative pressure pipe, liquid in the first valve body will be absorbed into the negative pressure cavity, liquid in the first valve body will be shortened after being reduced, at the moment, the first valve body will move upwards under the elastic force of the supporting spring in the left cavity, the first valve body will generate suction to hydraulic oil below the left cavity in the upward movement process, so, at the moment, the sliding magnet moves leftwards to be adsorbed, hydraulic oil in the right chamber is sucked out by the right side of the hydraulic chamber through the second hydraulic pipe, and the hydraulic oil in the right chamber is sucked out, so that the second valve body descends under the action of negative pressure until the second valve body is contacted with the second limiting groove at the bottom of the inner wall of the second valve body and then stops, a power shaft can drive the third sun gear to rotate, and then the rotating speed of the drilling barrel is reduced, so that the clamping ball can drive the transmission sleeve to rotate again;

when the drilling barrel encounters an ice layer with lower hardness, the resistance borne by the drilling barrel is smaller, the elastic supporting clamping ball of the negative pressure spring extends out of the clamping groove, and one side, close to the negative pressure spring, of the piston in the negative pressure cavity generates negative pressure suction to the negative pressure pipe I, so that fluid in the valve body II is reduced, the valve body II moves upwards under the action of the supporting spring, and the power shaft can drive the sun gear on the right side to rotate, so that the rotating speed of the drilling barrel can be increased, and the working efficiency is improved; meanwhile, when the hardness of the ice layer is stable, the blocking ball is intermittently extruded into the hydraulic cavity due to the collision between the drilling barrel and the ice surface, at the moment, fluid in the valve body II and fluid in the valve body I move back and forth, at the moment, the valve body II and the valve body I do not move greatly, the valve body I and the valve body II are located in the limiting grooves in the cavities under the elastic force action of the supporting springs at the bottom of the valve body I and the valve body II, at the moment, the gear sleeve rotates at a medium speed, the drilling barrel senses and changes the rotating speed again after the hardness of the ice layer changes, in conclusion, the hardness of the ice layer drilled at the moment of the drilling barrel can be automatically judged through the matching condition of the blocking balls and the clamping grooves, the required rotating speed is automatically adjusted, meanwhile, the volume of hydraulic oil between the valve bodies and the limiting grooves just enables the sliding magnet to move the length distance of one sun wheel, and therefore, the sliding spline can be prevented from, the situation that the sun wheel rotates at the same time but the rotation speed is different and the sun wheel is blocked is caused;

referring to fig. 1 and 2, the outer surface of the drilling barrel 1 is provided with a spiral groove, the end of the spiral groove is connected with a toothed sleeve 4 through a pipeline, the inside of the drilling barrel 1 and the bottom of the saw teeth 2 are both provided with a water outlet 3, one side of the toothed sleeve 4 is provided with a water outlet pipe which is connected with the water outlet 3 through a pipeline, an ore detector is further arranged below the saw teeth 2, the water outlet 3 inside the drilling barrel 1 is connected with an auxiliary pipeline, the end of the auxiliary pipeline is provided with an auxiliary box, the middle of the auxiliary pipeline is provided with a synchronous valve which is connected with the toothed sleeve 4 through a pipeline, during the drilling process of the drilling barrel, the spiral groove can convey ice slag generated at the saw teeth out of the drilling holes through the rotation of the drilling barrel, and convey the ice slag into the toothed sleeve through a pipeline, each gear inside the toothed sleeve can generate heat during movement to melt the ice slag, during the melting process, the melted water can not only cool the working, the gear can be lubricated in a matching process, so that lubricating oil is not needed, the pollution of lubricating oil leakage to the south Pole environment can be avoided, meanwhile, melted water can be discharged into a water outlet through a water discharge pipe, a layer of liquid separating film can be provided between the inner wall of the drilling barrel and an icicle inside the drilling barrel when the drilling barrel rotates, the friction of the icicle to the inside of the drilling barrel can be reduced, the waste of energy consumption is reduced, when the water outlet discharges melted water, auxiliary liquid in an auxiliary tank can be discharged together through a synchronous valve, the auxiliary liquid can assist the working of the liquid separating film, the friction between the drilling barrel and the icicle is smaller, meanwhile, the rotating speed of the synchronous valve can be synchronous with the rotating speed of a gear sleeve, the auxiliary liquid discharge amount is larger when the drilling barrel drills fast, otherwise, the auxiliary liquid discharge amount is reduced when the drilling barrel rotates slowly, and the waste of the auxiliary liquid can be avoided, the influence of the auxiliary liquid on the Antarctic environment can be reduced, after drilling is finished, the water is frozen with the inner wall of the drilling barrel again at low temperature, the drilling barrel is taken out, the icicles in the drilling barrel can be taken out for research, the bottom of the icicles does not need to be cut off by other equipment, the carrying of tools can be reduced by scientific investigation personnel, the burden of the personnel is relieved, and meanwhile, the frozen water source is water for melting the icicles, so that the subsequent icicles research cannot be influenced;

meanwhile, an ore detector and a water outlet are arranged at the front end of the saw tooth, ores can also exist in the Antarctic ice layer, the ores have great significance for the research of the Antarctic ice layer, and therefore the ores need to be completely taken out, when the ore detector detects that the ores exist under the drilling barrel, the integral device stops advancing, meanwhile, the water melted among all gears can be discharged from the water outlet at the front end of the saw tooth, the water absorbs high temperature generated when the gears are meshed and the temperature rises, the hot water can melt the ice layer under the drilling barrel until the ores fall into the melted water hole from the original ice layer, at the moment, the drilling equipment can continue to drill, at the moment, the hot water can be discharged from the saw tooth, the melted water hole only exists under the saw tooth, and when the drilling barrel continues to drill, the drilling barrel can collect the fallen ores and the water together in the drilling barrel, then, at low temperature of the surrounding environment, the water and the ore can be solidified again, so that the drilling barrel can completely take the ore out of the ground, and meanwhile, when the drilling barrel stops advancing due to overlarge resistance, hot water discharged in front of the sawteeth can prevent the drilling barrel from being solidified with the surrounding ice layer, and the subsequent starting is facilitated;

it is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.