CN210087231U - Power head for well drilling machine - Google Patents
Power head for well drilling machine Download PDFInfo
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- CN210087231U CN210087231U CN201920756511.4U CN201920756511U CN210087231U CN 210087231 U CN210087231 U CN 210087231U CN 201920756511 U CN201920756511 U CN 201920756511U CN 210087231 U CN210087231 U CN 210087231U
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- roller bearing
- middle shaft
- gearbox
- bearing
- power head
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Abstract
The utility model discloses a power head for a well drilling machine, which comprises a hydraulic motor, a gearbox, a middle shaft, a bearing chamber, an air seal seat, a wire disc and a drill bit, which are distributed from top to bottom in sequence, wherein the hydraulic motor is provided with a power output shaft; the gearbox comprises a gearbox upper cover, a connecting shaft sleeve and a planetary gear, and an upper tapered roller bearing, a lower tapered roller bearing and a cylindrical roller bearing are respectively arranged in the bearing chamber; the power head for the well drilling machine has the advantages of simple structure, small volume and flexibility, convenient transportation, good trafficability and strong region adaptability; the operation is simple, and the operation can be finished by one person; the tapered roller bearing increases the capacity of the middle shaft for bearing axial and radial combined loads which mainly take axial loads as main loads; the cylindrical roller bearing increases the capability of the middle shaft for bearing radial load and prevents the middle shaft from inclining; the planetary gear works on the same working shaft, the structural performance is stable, the stress is uniform, and the power head can be prevented from radially inclining.
Description
Technical Field
The utility model belongs to the technical field of the well rig, concretely relates to unit head for well rig.
Background
The power head is a power component which can realize main movement and feed movement and has automatic workpiece circulation. At present, most of power heads for drilling machines are complex and heavy in design, complex in disassembly, assembly and maintenance process, inconvenient to transport and seriously limited by regions; the traditional power head is only internally provided with two tapered roller bearings with the same name ends oppositely arranged, and a middle shaft is easy to incline; the traditional gearbox works on different working shafts, has small contact area and is easy to generate dislocation; most of the power heads use grease as a lubricant, and the grease is dried and caked after running for a period of time, so that the lubrication effect is poor, and mechanical parts are abraded.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a power head for a well drilling machine, which aims to solve the problems that most of power heads for drilling machines proposed in the background technology are complicated and heavy in design, complicated in disassembly, assembly and maintenance process, inconvenient in transportation and seriously limited by regions; the traditional power head is only internally provided with two tapered roller bearings with the same name ends oppositely arranged, and a middle shaft is easy to incline; the traditional gearbox works on different working shafts, has small contact area and is easy to generate dislocation; most of the lubricants used by the power head are butter, and the grease can be dried and caked after running for a period of time, so that the lubrication effect is poor, and the problem of mechanical part abrasion is caused.
In order to achieve the above object, the utility model provides a following technical scheme: a power head for a water well drilling machine comprises a hydraulic motor, a gear box, a middle shaft, a bearing chamber, an air seal seat, a screw disc and a drill bit which are sequentially distributed from top to bottom, wherein,
the hydraulic motor is provided with a power output shaft;
the transmission case comprises a transmission case upper cover, a connecting shaft sleeve and a planetary gear, sawteeth are arranged inside and outside the connecting shaft sleeve, internal sawteeth are in meshed connection with the power output shaft, and external sawteeth are in meshed connection with a planetary pinion inside the planetary gear;
a sun gear in the planetary gear is meshed with a gear at the upper end of the middle shaft, and the bearing chamber and the air seal seat are nested outside the middle shaft;
an upper tapered roller bearing, a lower tapered roller bearing and a cylindrical roller bearing are respectively arranged in the bearing chamber;
the air seal seat is positioned at the bottom of the bearing chamber and is fixedly connected with the bearing chamber, and the drill bit is fixedly connected with the bottom of the middle shaft through a wire disc;
the hydraulic motor, the gearbox, the middle shaft and the drill bit are all positioned on the same working shaft center.
Preferably, a power output shaft is arranged at the bottom of the hydraulic motor, sawteeth are arranged outside the power output shaft, and a base of the hydraulic motor is fixedly connected with an upper cover of the gearbox.
Preferably, the outer gear ring of the planetary gear is locked and fixedly connected with the upper cover of the gearbox, the inner small planetary gear of the planetary gear is meshed with the outer saw teeth of the connecting shaft sleeve, and the inner saw teeth of the sun gear are meshed with the outer saw teeth of the middle shaft.
Preferably, the top end of the upper cover of the gearbox is provided with an air hole, and the side surface of the upper cover of the gearbox is provided with an oil level observation hole.
Preferably, an oil discharge port is formed in the side face of the bearing chamber; the bearing chamber is internally provided with three bearings which are respectively an upper tapered roller bearing, a cylindrical roller bearing and a lower tapered roller bearing from top to bottom, the homonymous ends of the upper tapered roller bearing and the lower tapered roller bearing are oppositely arranged, and a snap ring sleeve are arranged between the upper tapered roller bearing and the cylindrical roller bearing.
Preferably, the outer wall of the middle shaft is provided with a groove, the bearing chamber is fixed on the groove through a clamping ring and a clamping ring sleeve, four first air inlets are formed in the side face of the middle shaft, and the first air inlets are highly corresponding to the air seal seat.
Preferably, a second air inlet hole is formed in the side face of the air seal seat, and the second air inlet hole corresponds to the first air inlet hole in the side face of the middle shaft.
Preferably, the top end of the air seal seat is provided with an oil seal groove, and the inner wall of the air seal seat is respectively provided with an upper air seal groove and a lower air seal groove which are respectively arranged at the upper end and the lower end of the inner wall of the air seal seat.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the power head for the well drilling machine has the advantages of simple structure, small volume and flexibility, is convenient to transport without being limited by regions, has good trafficability and strong regional adaptability; the operation is simple, the operation is convenient, and the operation can be finished by one person;
(2) the power head for the water well drilling machine is provided with two tapered roller bearings, so that the capacity of a middle shaft for bearing axial and radial combined loads mainly comprising axial loads is improved; meanwhile, a cylindrical roller bearing is arranged between the two conical roller bearings, so that the capability of the middle shaft for bearing radial load is increased, and the middle shaft is prevented from inclining;
(3) the utility model discloses a main variable speed original paper that the power head gearbox for well rig used is planetary gear, and planetary gear works in same working shaft, and structural performance is stable, and the atress is even, and can prevent that the power head from taking place radial tilt;
(4) the power head for the well drilling machine uses the gear oil as the lubricant, is more durable compared with butter, is not easy to agglomerate, has better lubricating quality, and can increase the heat dissipation effect;
(5) the gas seal seat air inlet of the power head for the water well drilling machine of the utility model is filled with a small amount of lubricating oil in high-pressure gas, so that the cavitation erosion of the high-pressure gas to mechanical elements can be reduced, and meanwhile, the power head has a lubricating effect on the impacter and the drill bit;
(6) the utility model discloses a well rig is with unit head gas seal seat top is provided with the oil blanket recess, can prevent that gear oil from entering the gas seal seat, can reduce the friction with the axis again;
(7) the utility model discloses a unit head for well rig is provided with the oil discharge outlet in the bearing room, emits gear oil when dismantling, convenient dismantlement.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of a power head splitting structure of the present invention;
FIG. 3 is a schematic cross-sectional view of the air sealing seat of the present invention;
in the figure: 1. a hydraulic motor; 101. a power take-off shaft; 2. a gearbox; 201. an upper cover of the gearbox; 202. a coupling sleeve; 203. a planetary gear; 204. an oil level observation hole; 205. air holes are formed; 3. a middle shaft; 301. a groove; 302. a first air intake hole; 4. a bearing chamber; 401. an upper tapered roller bearing; 402. a lower tapered roller bearing; 403. a cylindrical roller bearing; 404. a snap ring; 405. a snap ring sleeve; 406. an oil discharge port; 5. an air seal seat; 501. a second air intake hole; 502. an oil seal groove; 503. an upper air seal groove; 504. a lower air seal groove; 6. a wire reel; 7. a drill tip.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, fig. 2 and fig. 3, the present invention provides a technical solution: as shown in fig. 1 and 2, a power head for a water well drilling machine comprises a hydraulic motor 1, a gearbox 2, a middle shaft 3, a bearing chamber 4, an air seal seat 5, a wire disc 6 and a drill bit 7; the hydraulic motor 1 is provided with a power output shaft 101, the upper end of the gearbox 2 is connected with the power output shaft 101, the lower end of the gearbox 2 is connected with the upper end of the middle shaft 3, a bearing chamber 4 and an air seal seat 5 are nested outside the middle shaft 3, the air seal seat 5 is positioned at the bottom of the bearing chamber 4 and fixedly connected with the bearing chamber 4, the drill nozzle 7 and the wire disc 6 are fixedly connected with the bottom of the middle shaft 3 through bolts, and the hydraulic motor 1, the gearbox 2, the middle shaft 3, the bearing chamber 4, the air seal seat 5, the wire disc 6 and the drill nozzle 7 are all positioned on the same working shaft center.
Furthermore, a power output shaft 101 is arranged at the bottom of the hydraulic motor 1, sawteeth are arranged on the outer wall of the power output shaft 101, and the bottom end of the hydraulic motor 1 is fixed on the gearbox 2 through bolts.
Further, the gearbox 2 is composed of a gearbox upper cover 201, a coupling sleeve 202 and a planetary gear 203. The inner and outer sides of the coupling sleeve 202 are provided with saw teeth, the saw teeth inside the coupling sleeve 202 are meshed with the saw teeth on the outer wall of the power output shaft 101, and the saw teeth outside the coupling sleeve 202 are meshed with the planetary pinion inside the planetary gear 203. The outer ring of the planet gear 203 is locked and fixedly connected with the upper cover 201 of the gearbox by using bolts, and the sun gear inside the planet gear 203 is meshed with the gear at the upper end of the middle shaft 3.
Further, the outer wall of the middle shaft 3 is provided with a groove 301, and the side surface of the middle shaft 3 is provided with four first air inlet holes 302. The bottom of the middle shaft 3 is fixedly connected with the wire disc 6 through a bolt, and the drill bit 7 is fixedly connected with the wire disc 6 through a bolt.
Further, an upper tapered roller bearing 401 and a lower tapered roller bearing 402 are arranged in the bearing chamber 4, the same-name ends of the two tapered roller bearings are oppositely arranged, a cylindrical roller bearing 403 is arranged between the upper tapered roller bearing 401 and the lower tapered roller bearing 402, a clamping ring 404 and a clamping ring sleeve 405 are arranged between the upper tapered roller bearing 401 and the cylindrical roller bearing 403, the bearing chamber 4 is connected with a groove 301 on the outer wall of the middle shaft 3, and an oil discharge hole 406 is arranged on the side surface of the bearing chamber 4. The arrangement of the two tapered roller bearings can effectively enhance the capability of the middle shaft 3 for bearing axial and radial combined loads mainly comprising axial loads, and the arrangement of the cylindrical roller bearing 403 can enhance the capability of the middle shaft 3 for bearing radial loads and prevent the middle shaft 3 from inclining.
As shown in fig. 3, the air sealing seat 5 is located at the bottom of the bearing chamber 4 and is fixedly connected with the bearing chamber 4, a second air inlet 501 is formed in the side surface of the air sealing seat 5, the position of the second air inlet corresponds to the first air inlet 302 in the side surface of the middle shaft 3, an oil sealing groove 502 is formed in the top end of the air sealing seat 5, and an upper air sealing groove 503 and a lower air sealing groove 504 are respectively formed in the upper end and the lower end of the inner wall. The oil seal groove 502 is arranged, so that gear oil can be prevented from entering the air seal seat 5, and friction with the middle shaft 3 can be reduced; the upper air seal groove 503 is arranged to effectively prevent high-pressure air in the air seal seat 5 from entering the bearing chamber 4; the lower air seal groove 504 is arranged to effectively prevent the high-pressure air inside the air seal seat 5 from leaking downwards.
Further, the main component of the gearbox 2 is a planetary gear 203, and the planetary gear 203 can reduce the rotating speed and increase the torque, and works on the same working shaft, so that the risk of inclination of the middle shaft 3 is reduced.
Furthermore, the lubricant is gear oil, so that the lubricating effect is strong, the abrasion of mechanical parts is reduced, and the heat dissipation effect can be improved.
Furthermore, the side face of the gearbox is provided with an oil level observation hole 204, the top end of the gearbox upper cover 201 is provided with a vent hole 205, gear oil is heated to generate gas when the drilling machine runs, meanwhile, if the running time is too long, a gap is generated in the gas seal seat 5, high-pressure gas can enter the bearing chamber 4 and the gearbox 2, and the vent hole 205 can exhaust gas to prevent the gas from damaging mechanical parts.
The utility model discloses a theory of operation and use flow: when the power head for the water well drilling machine rotates forwards, the power output shaft 101 transmits power to the connecting shaft sleeve 202, torque is further increased through the planetary gear 203, power is input from the planetary pinion and output from the sun gear to the middle shaft 3, the middle shaft 3 is fixedly connected with the wire disc 6 and the drill mouth 7, the power is transmitted to the drill mouth 7 through the middle shaft 3 and the wire disc 6, and the drill mouth 7 drives the drill rod to operate. Wherein, the gearbox upper cover 201, the outer ring of the planet gear 203, the outer wall of the bearing chamber 4 and the air seal seat 5 are fixed.
When the power head for the water well drilling machine works, high-pressure gas enters from the second air inlet 501 on the side face of the air seal seat 5, and due to the existence of the upper air seal groove 503 and the lower air seal groove 504, the high-pressure gas can directly enter the middle shaft 3 through the first air inlet 302 on the side face of the middle shaft 3 and enter the drill rod through the wire disc 6 and the drill nozzle 7, wherein the high-pressure gas contains a small amount of oil, so that the cavitation erosion of the high-pressure gas to mechanical elements can be reduced, and meanwhile, the impacter and the drill bit are lubricated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a unit head for well rig which characterized in that: comprises a hydraulic motor (1), a gear box (2), a middle shaft (3), a bearing chamber (4), an air seal seat (5), a wire disc (6) and a drill bit (7) which are distributed from top to bottom in sequence, wherein,
the hydraulic motor (1) is provided with a power output shaft (101);
the gearbox (2) comprises a gearbox upper cover (201), a connecting shaft sleeve (202) and a planetary gear (203), sawteeth are arranged inside and outside the connecting shaft sleeve (202), internal sawteeth are in meshed connection with the power output shaft (101), and external sawteeth are in meshed connection with a planetary pinion inside the planetary gear (203);
a sun gear in the planetary gear (203) is meshed with a gear at the upper end of the middle shaft (3), and the bearing chamber (4) and the air seal seat (5) are nested outside the middle shaft (3);
an upper tapered roller bearing (401), a lower tapered roller bearing (402) and a cylindrical roller bearing (403) are respectively arranged in the bearing chamber (4);
the air seal seat (5) is positioned at the bottom of the bearing chamber (4) and is fixedly connected with the bearing chamber (4), and the drill bit (7) is fixedly connected with the bottom of the middle shaft (3) through a wire disc (6);
the hydraulic motor (1), the gearbox (2), the middle shaft (3) and the drill bit (7) are all positioned on the same working shaft center.
2. The power head for a well drilling machine as claimed in claim 1, wherein: the hydraulic motor is characterized in that a power output shaft (101) is arranged at the bottom of the hydraulic motor (1), sawteeth are arranged outside the power output shaft (101), and a base of the hydraulic motor (1) is fixedly connected with an upper cover (201) of the gearbox.
3. The power head for a well drilling machine as claimed in claim 2, wherein: the outer gear ring of the planetary gear (203) is locked and fixedly connected with the upper cover (201) of the gearbox, a small planetary gear inside the planetary gear (203) is meshed with outer sawteeth of the connecting shaft sleeve (202), and inner sawteeth of the sun gear are meshed with outer sawteeth of the middle shaft (3).
4. The power head for a well drilling machine as claimed in claim 1, wherein: the top end of the upper cover of the gearbox is provided with an air hole (205), and the side surface of the upper cover of the gearbox is provided with an oil level observation hole (204).
5. The power head for a well drilling machine as claimed in claim 1, wherein: an oil discharge port (406) is formed in the side surface of the bearing chamber (4); the bearing chamber (4) is internally provided with three bearings which are respectively an upper tapered roller bearing (401), a cylindrical roller bearing (403) and a lower tapered roller bearing (402) from top to bottom, the same-name ends of the upper tapered roller bearing (401) and the lower tapered roller bearing (402) are oppositely arranged, and a clamping ring (404) and a clamping ring sleeve (405) are arranged between the upper tapered roller bearing (401) and the cylindrical roller bearing (403).
6. The power head for a well drilling machine as claimed in claim 5, wherein: the outer wall of the middle shaft (3) is provided with a groove (301), the bearing chamber (4) is fixed on the groove (301) through a clamping ring (404) and a clamping ring sleeve (405), the side face of the middle shaft (3) is provided with four first air inlet holes (302), and the first air inlet holes (302) correspond to the air seal seat (5) in height.
7. The power head for a well drilling machine as claimed in claim 6, wherein: the side surface of the air seal seat (5) is provided with a second air inlet hole (501), and the second air inlet hole (501) corresponds to the first air inlet hole (302) on the side surface of the middle shaft (3).
8. The power head for a well drilling machine as claimed in claim 1, wherein: the top end of the air seal seat (5) is provided with an oil seal groove (502), the inner wall of the air seal seat (5) is respectively provided with an upper air seal groove (503) and a lower air seal groove (504) which are respectively arranged at the upper end and the lower end of the inner wall of the air seal seat (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920756511.4U CN210087231U (en) | 2019-05-23 | 2019-05-23 | Power head for well drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920756511.4U CN210087231U (en) | 2019-05-23 | 2019-05-23 | Power head for well drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210087231U true CN210087231U (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920756511.4U Active CN210087231U (en) | 2019-05-23 | 2019-05-23 | Power head for well drilling machine |
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| CN (1) | CN210087231U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056308A (en) * | 2019-05-23 | 2019-07-26 | 山东金开峰机械科技有限公司 | A kind of water drilling rig power head |
-
2019
- 2019-05-23 CN CN201920756511.4U patent/CN210087231U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056308A (en) * | 2019-05-23 | 2019-07-26 | 山东金开峰机械科技有限公司 | A kind of water drilling rig power head |
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