Top drive coring power head device
By combining multi-mode drive and planetary speed-increasing components, the problems of low transmission efficiency and poor reliability of traditional power head devices are solved, enabling efficient and convenient core drilling operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-19
- Publication Date
- 2026-04-07
Smart Images
Figure CN224093362U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of geological exploration, and in particular to a top-drive coring power head device. Background Technology
[0002] In traditional core drilling operations, the power head unit, as a core component, needs to simultaneously perform functions such as rotary drive, fluid transmission, and gear shifting.
[0003] In the existing technology, common power head devices have the following shortcomings:
[0004] Low transmission efficiency: The use of a single drive mode makes it difficult to meet the requirements of high torque low speed drilling and low torque high speed sampling, resulting in low operating efficiency.
[0005] Complex structure and inconvenient maintenance: The integration of fluid channels and transmission components is low, which makes them prone to leakage or mechanical failure. In addition, the components are complicated to disassemble and assemble, resulting in high maintenance costs.
[0006] Insufficient adaptability: Poor compatibility with different drilling techniques, requiring frequent replacement of equipment parts, which affects the continuity of construction.
[0007] Reliability issues: Under complex geological conditions, the sealing performance and bearing life of the power head are easily affected by impact loads or rock powder intrusion, leading to an increased risk of equipment failure.
[0008] Therefore, it is necessary to provide a top-drive coring power head device to solve the above-mentioned technical problems. Utility Model Content
[0009] This utility model provides a top-drive coring power head device, which solves the problems of low transmission efficiency, complex structure and inconvenient maintenance, insufficient adaptability and poor reliability of traditional rock core drilling power head devices.
[0010] To solve the above-mentioned technical problems, this utility model provides a top-drive coring power head device, comprising:
[0011] Power head and tail assembly and drive assembly;
[0012] The drive component is disposed at one end of the power head and tail assembly;
[0013] The power head tail assembly includes a tail connector welded together, a power head tail shaft, a bearing retainer, a pressure cover transition sleeve welded together, a V-group support ring, a pressure cover, a locking key, a lock nut, a transition joint, a shift shaft assembly, a shift slider, a shift handle, and a shift seat. The power head tail shaft is located at one end of the tail connector welded together. The bearing retainer is fitted onto the surface of the power head tail shaft. The pressure cover transition sleeve is fitted onto the surface of the power head tail shaft. The V-group support ring is fitted onto the surface of the power head tail shaft and positioned... Inside the welded gland transition sleeve, the gland is located at one end of the welded gland transition sleeve, the transition joint is located at one end of the even-numbered power head water tail shaft, the locking key is located on the surface of the power head water tail shaft, the locking nut is located between the power head water tail shaft and the transition joint, the shift shaft assembly is located between the welded water tail connecting sleeves, the shift seat is located between the shift shaft assemblies, the shift handle is located on the shift seat, and the shift slider is located inside the shift shaft assembly;
[0014] The drive assembly includes a planetary speed-increasing component and a cycloidal motor, with the cycloidal motor disposed at one end of the planetary speed-increasing component.
[0015] Preferably, the shift shaft assembly includes a spindle, a paddle, a retaining ring, and a bearing cover. The retaining ring is disposed on the surface of the spindle, the paddle is disposed on the surface of the retaining ring, and the bearing cover is disposed on one side of the paddle.
[0016] Preferably, the gear shift lever includes a first round tube, a second round tube, and two plugs, wherein the second round tube is connected between the first round tubes, and the two plugs are respectively connected to the two ends of the first round tube.
[0017] Preferably, the shift slider includes a support ring and two sliders, with the two sliders respectively disposed at both ends of the support ring.
[0018] Preferably, the planetary speed increaser assembly includes a planetary assembly, a motor connecting cover, a retaining ring, and a planetary carrier output shaft. The retaining ring is disposed on the outside of the planetary carrier output shaft, the planetary assembly is disposed on the surface of the planetary carrier output shaft, and the motor connecting cover is disposed at one end of the planetary assembly.
[0019] Preferably, the planetary assembly includes a sun gear assembly, an internal gear ring, a planet carrier, planet gears, a planet gear shaft, a first planet gear bushing, and a second planet gear bushing. The internal gear ring is disposed at one end of the sun gear assembly, the planet carrier is disposed on the outer side of the sun gear assembly, and the planet gears are disposed on the surface of the planet carrier.
[0020] Preferably, the planetary gear shaft is disposed inside the planetary gear, and both the first planetary gear bushing and the second planetary gear bushing are sleeved on the surface of the planetary gear shaft.
[0021] Compared with related technologies, the top-drive coring power head device provided by this utility model has the following advantages:
[0022] Beneficial effects:
[0023] This utility model provides a top-drive coring power head device.
[0024] Multi-mode drive with strong adaptability: Through the cooperation of the shift shaft assembly and the shift slider, different transmission ratios can be flexibly switched to meet the needs of drilling and coring and improve work efficiency.
[0025] The planetary speed-increasing component achieves speed increase and torque reduction through planetary gear transmission, improving sampling efficiency while reducing energy consumption.
[0026] Optimized fluid transport and sealing performance: The power head water tail assembly integrates a fluid channel, which can stably deliver flushing fluid or drilling fluid and avoid rock powder accumulation that affects drilling.
[0027] The welding of the gland transition sleeve and the locking nut effectively prevent fluid leakage and rock powder intrusion, improving the reliability of the equipment in complex environments;
[0028] Compact structure and easy maintenance: The separate structure of the power head and tail assembly and the drive assembly facilitates disassembly and maintenance, reducing downtime.
[0029] The gear shift lever is ergonomically designed for easy operation and reduced manual labor intensity.
[0030] Improved transmission accuracy and stability: Bearing retainers and snap rings ensure the coaxiality of the transmission shaft system, reduce vibration and noise, and extend bearing life;
[0031] The combination of a cycloidal motor and a planetary speed increaser provides smooth power output, meeting the needs of long-term continuous operation. Attached Figure Description
[0032] Figure 1 A schematic diagram of a preferred embodiment of a top-drive coring power head device provided by this utility model;
[0033] Figure 2 for Figure 1 The diagram shows a three-dimensional structure of the power head device.
[0034] Figure 3 for Figure 1 The front view of the power head unit shown;
[0035] Figure 4 for Figure 3 A cross-sectional view of the power head unit shown;
[0036] Figure 5 This is a schematic diagram of the planetary assembly.
[0037] Figure 6 for Figure 5 A cross-sectional view of the planetary assembly shown;
[0038] Figure 7 This is a schematic diagram of the planetary speed-increasing component.
[0039] Figure 8 for Figure 7 A cross-sectional view of the planetary speed-increasing component shown;
[0040] Figure 9 for Figure 7 A schematic diagram of the three-dimensional structure of the planetary speed-increasing component is shown.
[0041] Figure 10 This is a schematic diagram of the drive component.
[0042] Figure 11 for Figure 10 A cross-sectional view of the driving component shown;
[0043] Figure 12 for Figure 10 The diagram shows a three-dimensional structure of the drive component from a first-person perspective.
[0044] Figure 13 for Figure 10 A three-dimensional structural diagram of the driving component from a second perspective;
[0045] Figure 14 This is a three-dimensional structural diagram of the gear shifter.
[0046] Figure 15 This is a three-dimensional structural diagram of the shift shaft assembly;
[0047] Figure 16 for Figure 15 The front view of the shift shaft assembly shown;
[0048] Figure 17 for Figure 16 A cross-sectional view of the shift shaft assembly shown;
[0049] Figure 18 This is a three-dimensional structural diagram of the gear shift slider;
[0050] Figure 19 A three-dimensional structural diagram of the power head and tail assembly from a first-person perspective;
[0051] Figure 20 for Figure 19The diagram shows a three-dimensional structure of the power head and tail assembly from a second perspective.
[0052] Figure 21 for Figure 19 The front view of the power head and tail assembly shown;
[0053] Figure 22 for Figure 21 A cross-sectional view of the power head and tail assembly shown;
[0054] Figure 23 This is a schematic diagram of the gear shift lever.
[0055] The following are the labeling elements in the diagram: 1. Power head tail assembly; 11. Tail connecting sleeve welding; 12. Power head tail shaft; 13. Bearing retainer; 14. Pressure cover transition sleeve welding; 15. V-group support ring; 16. Pressure cover; 17. Locking key; 18. Locking nut; 19. Transition joint;
[0056] 110. Shift shaft assembly; 1101. Spindle; 1102. Paddle shifter; 1103. Snap ring; 1104. Bearing cap;
[0057] 111. Shift slider; 1111. Support ring; 1112. Slider; 112. Shift handle; 1121. First round tube; 1122. Second round tube; 1123. Plug;
[0058] 113. Gear shift seat;
[0059] 2. Drive assembly; 21. Planetary speed increaser assembly; 22. Cycloidal motor;
[0060] 211. Planetary assembly; 2111. Sun gear assembly; 2112. Internal gear ring; 2113. Planetary carrier; 2114. Planetary gears; 2115. Planetary gear shaft; 2116. First planetary gear bushing; 2117. Second planetary gear bushing; 212. Motor connecting cover; 213. Retaining ring; 214. Planetary carrier output shaft. Detailed Implementation
[0061] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0062] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14, Figure 15 , Figure 16 , Figure 17 , Figure 18 , Figure 19 , Figure 20 , Figure 21 , Figure 22 and Figure 23 ,in, Figure 1 A schematic diagram of a preferred embodiment of a top-drive coring power head device provided by this utility model; Figure 2 for Figure 1 The diagram shows a three-dimensional structure of the power head device. Figure 3 for Figure 1 The front view of the power head unit shown; Figure 4 for Figure 3 A cross-sectional view of the power head unit shown; Figure 5 This is a schematic diagram of the planetary assembly. Figure 6 for Figure 5 A cross-sectional view of the planetary assembly shown; Figure 7 This is a schematic diagram of the planetary speed-increasing component. Figure 8 for Figure 7 A cross-sectional view of the planetary speed-increasing component shown; Figure 9 for Figure 7 A schematic diagram of the three-dimensional structure of the planetary speed-increasing component is shown. Figure 10 This is a schematic diagram of the drive component. Figure 11 for Figure 10 A cross-sectional view of the driving component shown; Figure 12 for Figure 10 The diagram shows a three-dimensional structure of the drive component from a first-person perspective. Figure 13 for Figure 10 A three-dimensional structural diagram of the driving component from a second perspective; Figure 14 This is a three-dimensional structural diagram of the gear shifter. Figure 15 This is a three-dimensional structural diagram of the shift shaft assembly; Figure 16 for Figure 15 The front view of the shift shaft assembly shown; Figure 17 for Figure 16 A cross-sectional view of the shift shaft assembly shown; Figure 18 This is a three-dimensional structural diagram of the gear shift slider; Figure 19 A three-dimensional structural diagram of the power head and tail assembly from a first-person perspective; Figure 20 for Figure 19 The diagram shows a three-dimensional structure of the power head and tail assembly from a second perspective. Figure 21 for Figure 19 The front view of the power head and tail assembly shown;
[0063] Figure 22 for Figure 21 A cross-sectional view of the power head and tail assembly shown; Figure 23 This is a schematic diagram of a gear shift lever. A top-drive coring power head device includes:
[0064] Power head and tail assembly 1 and drive assembly 2;
[0065] The drive component 2 is disposed at one end of the power head and tail assembly 1;
[0066] The power head water tail assembly 1 includes a water tail connecting sleeve welded 11, a power head water tail shaft 12, a bearing retainer 13, a pressure cover transition sleeve welded 14, a V-group support ring 15, a pressure cover 16, a retaining key 17, a locking nut 18, a transition joint 19, a shift shaft assembly 110, a shift slider 112, a shift handle 111, and a shift seat 113. The power head water tail shaft 12 is disposed at one end of the water tail connecting sleeve welded 11, the bearing retainer 13 is sleeved on the surface of the power head water tail shaft 12, the pressure cover transition sleeve welded 14 is sleeved on the surface of the power head water tail shaft 12, and the V-group support ring 15 is sleeved on the surface of the power head water tail shaft 12. And located inside the pressure cover transition sleeve weld 14, the pressure cover 16 is disposed at one end of the pressure cover transition sleeve weld 14, the transition joint 19 is disposed at one end of the even-numbered power head water tail shaft 12, the locking key 17 is on the surface of the power head water tail shaft 12, the locking nut 18 is disposed between the power head water tail shaft 12 and the transition joint 19, the shift shaft assembly 110 is disposed between the water tail connecting sleeve weld 11, the shift seat 113 is disposed between the shift shaft assembly 110, the shift handle 111 is disposed on the shift seat 113, and the shift slider 112 is disposed inside the shift shaft assembly 110;
[0067] The drive assembly 2 includes a planetary speed-increasing assembly 21 and a cycloidal motor 22, with the cycloidal motor 22 disposed at one end of the planetary speed-increasing assembly 21.
[0068] The shift shaft assembly 110 includes a spindle 1101, a paddle 1102, a retaining ring 1103, and a bearing cover 1104. The retaining ring 1103 is disposed on the surface of the spindle 1101, the paddle 1102 is disposed on the surface of the retaining ring 1103, and the bearing cover 1104 is disposed on one side of the paddle 1102.
[0069] The gear shift lever 111 includes a first round tube 1111, a second round tube 1112, and two plugs 1113. The second round tube 1112 is connected between the first round tube 1111, and the two plugs 1113 are respectively connected to the two ends of the first round tube 1111.
[0070] The shift slider 112 includes a support ring 1121 and two sliders 1122, with the two sliders 1122 respectively disposed at both ends of the support ring 1121.
[0071] The planetary speed-increasing assembly 21 includes a planetary assembly 211, a motor connecting cover 212, a retaining ring 213, and a planetary carrier output shaft 214. The retaining ring 213 is disposed on the outside of the planetary carrier output shaft 214, the planetary assembly 211 is disposed on the surface of the planetary carrier output shaft 214, and the motor connecting cover 212 is disposed at one end of the planetary assembly 211.
[0072] The planetary assembly 211 includes a sun gear assembly 2111, an internal gear ring 2112, a planet carrier 2113, planet gears 2114, a planet gear shaft 2115, a first planet gear bushing 2116, and a second planet gear bushing 2117. The internal gear ring 2112 is disposed at one end of the sun gear assembly 2111, the planet carrier 2113 is disposed on the outer side of the sun gear assembly 2111, and the planet gears 2114 are disposed on the surface of the planet carrier 2113.
[0073] The planetary gear shaft 2115 is disposed inside the planetary gear 2114, and the first planetary gear bushing 2116 and the second planetary gear bushing 2117 are both sleeved on the surface of the planetary gear shaft 2115.
[0074] Power head and tail assembly 1
[0075] Core function: Integrates fluid transmission channel and shifting mechanism, connecting drill pipe and drive assembly.
[0076] Key components and their connections:
[0077] Tail tail connecting sleeve welding 11: As a basic frame, one end is fixed to the power head tail tail shaft 12 by thread or welding, and the other end is connected to the drill pipe by transition joint 19, with an axial fluid channel opened inside.
[0078] Power head water tail shaft 12: runs through the center of the component, and the surface is successively fitted with bearing retainer 13, pressure cover transition sleeve welded 14 and V group support ring 15.
[0079] Bearing retainer 13: Positions the bearing installation location, fixes it by interference fit or snap ring, and supports shaft rotation.
[0080] The pressure cover transition sleeve welding 14: It is fitted outside the shaft, and the inside forms a sealing cavity with the shaft through the V group support ring 15 (sealing ring group) to prevent fluid leakage; one end is fixed to the pressure cover 16 by bolts, and the other end is locked to the transition joint 19 by the lock nut 18 and the key 17 to ensure axial positioning.
[0081] Gear shifting mechanism:
[0082] Shift shaft assembly 110: It is welded across the water tail connecting sleeve 11 and consists of a spindle 1101, a paddle 1102, a retaining ring 1103 and a bearing cover 1104.
[0083] Mandrel 1101: Both ends are installed in the bearing holes of the tail connecting sleeve welded 11 via bearings, the middle part is fixed by the retaining ring 1103 to the paddle 1102 (fan-shaped paddle block), and the end is sealed by the bearing cover 1104.
[0084] Shift seat 113: Fixed in the middle of spindle 1101, used to install shift handle 111 (a T-shaped structure welded from first round tube 1111 and second round tube 1112, sealed with plugs 1113 at both ends).
[0085] Shift slider 112: Located in the inner groove of spindle 1101, it consists of support ring 1121 and sliders 1122 at both ends. Slider 1122 is in contact with paddle 1102. By moving shift handle 111, spindle 1101 is driven to rotate, which drives paddle 1102 to push slider 1122 to switch transmission gears.
[0086] Driver Component 2
[0087] Core function: Provides rotational power and achieves speed increase and torque reduction.
[0088] Key components and their connections:
[0089] Cycloidal motor 22: As a power source, it is fixed to the motor connection cover 212 of the planetary speed increase assembly 21 via a flange. The output shaft is inserted into the inner hole of the sun gear assembly 211 of the planetary assembly 211 and transmits torque through splines or keyways.
[0090] Planetary Speed-Up Component 21:
[0091] Planetary component 211:
[0092] Sun gear assembly 2111: connected to the output shaft of cycloidal motor 22, with outer ring meshing planet gears 2114 (usually 3-4 evenly distributed).
[0093] Planetary gear 2114: Mounted on planet carrier 2113 (output component) via planetary gear shaft 2115, with first planetary gear bushing 2116 and second planetary gear bushing 2117 (friction-reducing bushings to reduce wear) fitted on the shaft surface.
[0094] Internal gear ring 2112: Fixed inside the motor connecting cover 212, meshing with the planet gear 2114 to form a planetary transmission structure (sun gear is active, planet carrier is driven, and internal gear ring is fixed).
[0095] Planetary carrier output shaft 214: It is integrally machined with or bolted to the planetary carrier 2113, and its end is connected to the power head water tail shaft 12 via a spline. The outer side is axially limited by the retaining ring 213.
[0096] Connection method: The drive assembly 2 is fixed to one end of the power head tail assembly 1 by bolts. The planetary carrier output shaft 214 is rigidly connected to the power head tail shaft 12 by splines or couplings to ensure torque transmission.
[0097] Power transmission path
[0098] Low-speed, high-torque mode (drilling conditions):
[0099] Move the shift lever 111, and the spindle 1101 drives the paddle 1102 to push the shift slider 112, so that the sun gear assembly 2111 of the planetary speed increase assembly 21 is directly connected to the cycloidal motor 22 (direct drive mode).
[0100] The output torque of the cycloidal motor 22 is transmitted through the sun gear assembly 2111 → planetary carrier output shaft 214 → power head tail shaft 12 → transition joint 19 → drill pipe, realizing low-speed, high-torque drilling to meet the needs of hard rock strata breaking.
[0101] High-speed low-torque mode:
[0102] When the gear shift lever 111 is switched to another gear, the paddle 1102 drives the slider 112 to engage the planetary assembly 211 in the transmission.
[0103] The cycloidal motor 22 drives the sun gear assembly 2111 to rotate, and the planet gear 2114 rotates on its own axis and revolves around the planet under the action of the internal gear ring 2112, which drives the planet carrier 2113 (planet carrier output shaft 214) to increase the speed of output.
[0104] Fluid transport principle
[0105] Flushing fluid or drilling fluid is injected from the side inlet of the tailwater connection sleeve welded 11, and sprayed out through the internal axial channel of the power head tailwater shaft 12 → transition joint 19 → drill pipe center hole → drill bit nozzle, thereby achieving the flushing and cooling of rock powder at the bottom of the hole.
[0106] Sealing mechanism:
[0107] The V-shaped support ring 15 (multiple V-shaped seals) forms a radial seal under the compression of the gland 16 and the gland transition sleeve weld 14, preventing fluid leakage between the shaft and the sleeve.
[0108] The locking nut 18 further compacts the sealing ring through axial preload, improving sealing reliability and preventing rock powder from entering the bearing area.
[0109] Gear shifting operation logic
[0110] Manual shifting procedure:
[0111] Shut down and release system pressure;
[0112] Move the gear shift lever 111 (the T-shaped structure provides gripping force), which will cause the spindle 1101 to rotate;
[0113] The paddle 1102 on the spindle 1101 pushes the shift slider 112 to move axially within the spindle groove;
[0114] The slider 112 switches the clutch or gear engagement state of the planetary speed increase assembly 21 through a mechanical linkage mechanism (such as a shift fork) to achieve gear switching;
[0115] After the gear is locked, restart the equipment to enter the corresponding operating condition.
[0116] Structural design advantages
[0117] Modular integration: The power head and tail assembly 1 and the drive assembly 2 are designed separately and can be disassembled and maintained independently. For example, the cycloidal motor 22 can be replaced separately or the shifting mechanism can be repaired without disassembling the entire equipment.
[0118] Impact resistance and abrasion resistance:
[0119] The bearing retainer 13 and the retaining ring 1103 are made of high-strength alloy material and are machined with high precision to ensure the coaxiality of the shaft system under impact load and reduce bearing wear.
[0120] The first planetary gear bushing 2116 and the second planetary gear bushing 2117 are made of copper alloy or self-lubricating material to reduce frictional loss between the planetary gears and the shaft and extend their service life.
[0121] Humanized operation: The T-shaped round tube structure of the gear shift lever 111 is ergonomic, reducing operator fatigue, and the gear shifting stroke is short and the feedback is clear.
[0122] IV. Application Scenarios Expansion
[0123] Conventional core drilling: The rock strata are broken by low-speed mode and the core is extracted quickly by high-speed mode, reducing idle time.
[0124] Directional coring: In conjunction with measurement-while-drilling instruments, precise gear shifting adapts to the drilling needs of formations with different dip angles, thereby improving the core recovery rate.
[0125] Adaptability to complex formations: The sealing structure and wear-resistant component design enable it to work stably in harsh environments such as high sand content and high water pressure, reducing the frequency of failures.
[0126] Compared with related technologies, the top-drive coring power head device provided by this utility model has the following advantages:
[0127] Beneficial effects:
[0128] This utility model provides a top-drive coring power head device.
[0129] Multi-mode drive with strong adaptability: Through the cooperation of the shift shaft assembly 110 and the shift slider 112, different transmission ratios can be flexibly switched to meet the needs of drilling and coring and improve work efficiency.
[0130] The planetary speed-increasing component 21 achieves speed increase and torque reduction through planetary gear transmission, which improves sampling efficiency while reducing energy consumption.
[0131] Optimized fluid transport and sealing performance: The power head water tail assembly 1 integrates a fluid channel, which can stably deliver flushing fluid or drilling fluid and avoid rock powder accumulation that affects drilling.
[0132] The welded gland transition sleeve 14 and locking nut 18 effectively prevent fluid leakage and rock powder intrusion, improving the reliability of the equipment in complex environments;
[0133] Compact structure and easy maintenance: The separate structure of the power head and tail assembly 1 and the drive assembly 2 facilitates disassembly and maintenance, reducing downtime;
[0134] The gear shift lever 111 adopts an ergonomic design, making it easy to operate and reducing manual labor intensity;
[0135] Improved transmission accuracy and stability: The bearing retainer 13 and retaining ring 1103 ensure the coaxiality of the transmission shaft system, reduce vibration and noise, and extend the service life of the bearing;
[0136] The combination of the cycloidal motor 22 and the planetary speed increaser 21 provides smooth power output to meet the needs of long-term continuous operation.
[0137] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A top-drive coring power head device, characterized in that, include: Power head and tail assembly and drive assembly; The drive component is disposed at one end of the power head and tail assembly; The power head tail assembly includes a tail connector welded together, a power head tail shaft, a bearing retainer, a pressure cover transition sleeve welded together, a V-group support ring, a pressure cover, a locking key, a lock nut, a transition joint, a shift shaft assembly, a shift slider, a shift handle, and a shift seat. The power head tail shaft is located at one end of the tail connector welded together. The bearing retainer is fitted onto the surface of the power head tail shaft. The pressure cover transition sleeve is fitted onto the surface of the power head tail shaft. The V-group support ring is fitted onto the surface of the power head tail shaft and positioned... Inside the welded gland transition sleeve, the gland is located at one end of the welded gland transition sleeve, the transition joint is located at one end of the even-numbered power head water tail shaft, the locking key is located on the surface of the power head water tail shaft, the locking nut is located between the power head water tail shaft and the transition joint, the shift shaft assembly is located between the welded water tail connecting sleeves, the shift seat is located between the shift shaft assemblies, the shift handle is located on the shift seat, and the shift slider is located inside the shift shaft assembly; The drive assembly includes a planetary speed-increasing assembly and a cycloidal motor, with the cycloidal motor disposed at one end of the planetary speed-increasing assembly.
2. The top-drive coring power head device according to claim 1, characterized in that, The shift shaft assembly includes a spindle, a paddle, a retaining ring, and a bearing cover. The retaining ring is disposed on the surface of the spindle, the paddle is disposed on the surface of the retaining ring, and the bearing cover is disposed on one side of the paddle.
3. The top-drive coring power head device according to claim 1, characterized in that, The gear shift lever includes a first round tube, a second round tube, and two plugs. The second round tube is connected between the first round tubes, and the two plugs are respectively connected to the two ends of the first round tube.
4. The top-drive coring power head device according to claim 1, characterized in that, The shift slider includes a support ring and two sliders, with the two sliders respectively disposed at both ends of the support ring.
5. The top-drive coring power head device according to claim 1, characterized in that, The planetary speed increaser assembly includes a planetary assembly, a motor connection cover, a retaining ring, and a planetary carrier output shaft. The retaining ring is disposed on the outside of the planetary carrier output shaft, the planetary assembly is disposed on the surface of the planetary carrier output shaft, and the motor connection cover is disposed at one end of the planetary assembly.
6. The top-drive coring power head device according to claim 5, characterized in that, The planetary assembly includes a sun gear assembly, an internal gear ring, a planet carrier, planet gears, planet gear shafts, a first planet gear bushing, and a second planet gear bushing. The internal gear ring is disposed at one end of the sun gear assembly, the planet carrier is disposed on the outer side of the sun gear assembly, and the planet gears are disposed on the surface of the planet carrier.
7. The top-drive coring head device according to claim 6, characterized in that, The planetary gear shaft is disposed inside the planetary gear, and the first planetary gear bushing and the second planetary gear bushing are both sleeved on the surface of the planetary gear shaft.