CN210600110U - Reduction gearbox for turbine fracturing - Google Patents
Reduction gearbox for turbine fracturing Download PDFInfo
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- CN210600110U CN210600110U CN201921480266.5U CN201921480266U CN210600110U CN 210600110 U CN210600110 U CN 210600110U CN 201921480266 U CN201921480266 U CN 201921480266U CN 210600110 U CN210600110 U CN 210600110U
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Abstract
The utility model discloses a reducing gear box for turbine fracturing, this reducing gear box overall structure is compact, small, light in weight, drive ratio are big, and power is input by sun gear shaft tip gear, through sun gear shaft tip gear and planet wheel meshing speed reduction increase turn round, through planet carrier output. The size and the number of gears are reduced by utilizing the structure of the planetary gear set, and the gear set is more suitable for the speed reduction requirement of a turbine engine. The cover plate is opened to pass through the observation hole, so that the maintenance and the protection are convenient. The brake device is used with the brake block in a matched mode, so that equipment can be immediately stopped in case of emergency, and equipment and personal safety are protected.
Description
Technical Field
The utility model relates to a turbine fracturing technical field, concretely relates to reducing gear box for turbine fracturing.
Background
At present, in vehicle-mounted turbine fracturing equipment, a power source is a turbine engine, a transmission device is a reduction gearbox and a transmission shaft or a coupling, and an execution element is a fracturing plunger pump. The turbine engine has the advantages of small volume, light weight and high power density, the single machine power of the turbine fracturing equipment is more than 2 times that of the conventional diesel fracturing equipment due to the same external dimension and weight. The turbine engine can directly use 100% natural gas as fuel, does not need the intermediate link of gas power generation unlike electrically-driven fracturing equipment, saves the investment cost of a gas generator set, and simultaneously, adopts the turbine fracturing equipment to share the fault risk of a single high-power gas generator on each turbine fracturing equipment, thereby avoiding the risk of paralysis of a whole set of fracturing truck set caused by the fault of the single gas power generation equipment.
The planet gear reduction box installed in the turbine fracturing equipment is usually of a cantilever integral structure due to small space, but if the planet carrier is not properly supported and treated, the rigidity of the planet carrier is possibly reduced, the vibration is increased, and the uneven phenomenon of a gear meshing part is strengthened, so that the reliability and the service life of the transmission of the planet gear are greatly reduced.
Therefore, a reduction gearbox for turbine fracturing, which is convenient to install, compact in overall structure and good in transmission performance, is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an it is not enough that prior art is overcome to the purpose, provides a reducing gear box for turbine fracturing, and this reducing gear box overall structure is compact, small, light in weight, drive ratio are big, and power is input by sun gear shaft tip gear, through sun gear shaft tip gear and planet wheel meshing speed reduction increase turn round, through planet carrier output. The size and the number of gears are reduced by utilizing the structure of the planetary gear set, and the gear set is more suitable for the speed reduction requirement of a turbine engine. The cover plate is opened to pass through the observation hole, so that the maintenance and the protection are convenient. The brake device is used with the brake block in a matched mode, so that equipment can be immediately stopped in case of emergency, and equipment and personal safety are protected.
The purpose of the utility model is achieved through the following technical measures: the utility model provides a reduction box for turbine fracturing, the reduction box includes sun wheel axle, planet wheel and bearing, the planet wheel is 3, the bearing is 6, and the planet wheel forms 3 sets of planet wheelsets after cup jointing with the bearing to two, and the sun wheel axle includes big end gear and tip gear, 3 sets the planet wheelset uses big end gear to distribute around it to the planet wheel is connected with big end gear meshing.
Furthermore, 3 groups of planetary wheel sets are uniformly distributed around the large-end gear by taking the large-end gear as a circle center.
Furthermore, the big end gear comprises a first big end gear and a second big end gear, the first big end gear is right-handed helical teeth, and the second big end gear is left-handed helical teeth.
Furthermore, the planet wheel comprises a first wheel tooth surface and a second wheel tooth surface, wherein the first wheel tooth surface is a left-handed helical tooth, and the second wheel tooth surface is a right-handed helical tooth.
Further, the first big end gear is in meshed connection with the first gear tooth surface, and the second big end gear is in meshed connection with the second gear tooth surface.
Furthermore, the reduction gearbox comprises an input bearing, a flange, an inner gear ring and a planet carrier, wherein the flange is connected with the inner gear ring, the input bearing is arranged in the flange, the input bearing is sleeved on the sun wheel shaft, the inner gear ring is in meshed connection with a planet wheel of the planet wheel set, and the planet carrier is connected with the bearing through a pin shaft.
Furthermore, the reduction gearbox comprises an output spline shaft and an output spline shaft sleeve, one end of the output spline shaft is connected with the output spline shaft sleeve, and the other end of the output spline shaft is connected with the planet carrier.
Furthermore, the reduction gearbox comprises an upper box body, a lower box body and an output pin shaft, the upper box body and the lower box body are connected to form a protection box body outside the reduction gearbox, one side of the protection box body is connected with the flange, and the other side of the protection box body is connected with the output spline shaft through the output pin shaft.
Furthermore, an observation hole is formed in the upper box body, and a cover plate covers the observation hole.
Furthermore, the upper box body is provided with a brake device, the output spline shaft sleeve is provided with a brake pad, and the brake device is matched with the brake pad for use.
Compared with the prior art, the beneficial effects of the utility model are that: the reduction gearbox has compact integral structure, small volume, light weight and large transmission ratio, power is input by the small-end gear of the sun wheel shaft, is subjected to speed reduction and torque increase through the meshing of the large-end gear of the sun wheel shaft and the planet wheel, and is output by the planet carrier. The size and the number of gears are reduced by utilizing the structure of the planetary gear set, and the gear set is more suitable for the speed reduction requirement of a turbine engine. The cover plate is opened to pass through the observation hole, so that the maintenance and the protection are convenient. The brake device is used with the brake block in a matched mode, so that equipment can be immediately stopped in case of emergency, and equipment and personal safety are protected. The double-row herringbone gear meshed structure is adopted between the planet gear and the sun gear, the contact area is increased, the vertical pressure of the counter gear is reduced, the flowing of lubricating oil is facilitated, the transverse force on the bevel gear shaft is eliminated, the gear overlapping degree is high, the axial load is small, the bearing capacity is high, and the work is more stable.
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic diagram of the internal structure of the reduction gearbox for turbine fracturing.
FIG. 2 is a schematic view of a reduction gearbox for turbine fracturing.
FIG. 3 is a schematic view of a planetary speed reduction structure of a reduction gearbox for turbine fracturing.
FIG. 4 is a schematic diagram of a reduction gearbox planet wheel structure for turbine fracturing.
FIG. 5 is a schematic structural view of a sun gear shaft of the reduction gearbox for turbine fracturing.
FIG. 6 is a schematic diagram of a reduction gearbox output spline sleeve structure for turbine fracturing.
The planetary gear train comprises a lower box body 1, a sun gear shaft 2, a flange 3, an upper box body 4, a cover plate 5, a brake device 6, an output spline sleeve 7, an output spline shaft 8, a planet carrier 9, an inner gear ring 10, a planet gear 11, a pin shaft 12, a bearing 13, an input bearing 14, an output bearing 15, a first large-end gear 16, a second large-end gear 17, a first gear tooth surface 18, a second gear tooth surface 19, a brake pad 20 and a small-end gear 21.
Detailed Description
As shown in fig. 1 to 6, the reduction gearbox for turbine fracturing comprises a sun wheel shaft 2, planet wheels 11 and bearings 13, wherein the number of the planet wheels 11 is 3, the number of the bearings 13 is 6, every two of the bearings 13 are used for fixing one planet wheel 11, the 6 bearings 13 and the 3 planet wheels 11 are respectively sleeved to form 3 groups of planet wheel sets, the sun wheel shaft 2 comprises a big end gear and a small end gear, the 3 groups of planet wheel sets are distributed around the big end gear by taking the big end gear as a circle center, and the planet wheels 11 are in meshed connection with the big end gear. The 3 groups of planetary wheel sets are uniformly distributed around the large-end gear serving as a circle center. The reduction gearbox has a large transmission ratio, power is input by the small end gear of the sun wheel shaft, is meshed with the planet wheel 11 through the large end gear of the sun wheel shaft to reduce the speed and increase the torque, and is output through the planet carrier 9. The size and the number of gears are reduced by utilizing the structure of the planetary gear set, and the gear set is more suitable for the speed reduction requirement of a turbine engine. The big end gear comprises a first big end gear 16 and a second big end gear 17, the first big end gear 16 is right-handed helical teeth, and the second big end gear 17 is left-handed helical teeth. The planet wheel 11 comprises a first wheel tooth surface 18 and a second wheel tooth surface 19, wherein the first wheel tooth surface 18 is a left-handed helical tooth, and the second wheel tooth surface 19 is a right-handed helical tooth. The first big end gear 16 is meshed with the first gear tooth surface 18, and the second big end gear 17 is meshed with the second gear tooth surface 19, so that a double-row herringbone gear meshed structure is adopted between the planet gear 11 and the sun gear, the contact area is increased, the vertical pressure to the gear is reduced, the lubricating oil can flow conveniently, the transverse force on a bevel gear shaft is eliminated, the gear overlap ratio is high, the axial load is small, the bearing capacity is high, and the work is more stable. The reduction gearbox comprises an input bearing 14, a flange 3, an inner gear ring 10 and a planet carrier 9, wherein the flange 3 is connected with the inner gear ring 10, the input bearing 14 is arranged in the flange 3, the input bearing 14 is sleeved on the sun wheel shaft 2, the inner gear ring 10 is in meshed connection with a planet wheel 11 of a planet wheel set, and the planet carrier 9 is connected with a bearing 13 through a pin shaft 12. The reduction gearbox comprises an output spline shaft 8 and an output spline housing 7, one end of the output spline shaft 8 is connected with the output spline housing 7, and the other end of the output spline shaft 8 is connected with a planet carrier 9. The reduction gearbox comprises an upper box body 4, a lower box body 1 and an output bearing 15, wherein the upper box body 4 is connected with the lower box body 1 to form a protective box body outside the reduction gearbox, one side of the protective box body is connected with the flange 3, and the other side of the protective box body is connected with the output spline shaft 8 through the output bearing 15. The reduction box has compact integral structure, small volume and light weight.
And an observation hole is formed in the upper box body 4, and a cover plate 5 covers the observation hole. The cover plate 5 is opened, so that the internal operation conditions in the protective box body, such as meshing of gears, abrasion of tooth surfaces and the like, can be seen through the observation hole, the protective box body does not need to be opened, and the effect of convenient maintenance can be achieved.
Go up and be equipped with brake equipment 6 on box 4, be equipped with brake block 20 on output spline housing 7, brake equipment 6 uses with brake block 20 cooperation, if meet emergency and can make equipment bring to rest immediately, protection equipment and personal safety.
In the actual use process, the small-end gear of the sun wheel shaft 2 can be connected with the turbine engine, the output spline sleeve 7 is connected with the transmission shaft, and the rotational speed of the turbine engine is transmitted to the transmission shaft through the reduction gearbox for turbine fracturing, so that the functions of reducing the rotational speed and increasing the output torque are realized.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A reduction box for turbine fracturing is characterized in that: the reduction box comprises a sun wheel shaft, 3 planet wheels and bearings, the number of the planet wheels is 3, the number of the bearings is 6, the planet wheels and the bearings are sleeved in a pair to form 3 groups of planet wheel sets, the sun wheel shaft comprises a large-end gear and a small-end gear, the 3 groups of planet wheel sets are distributed around the large-end gear serving as a circle center, and the planet wheels are connected with the large-end gear in a meshed mode.
2. The reduction gearbox for turbine fracturing as recited in claim 1, wherein: the 3 groups of planetary wheel sets are uniformly distributed around the large-end gear serving as a circle center.
3. The reduction gearbox for turbine fracturing as recited in claim 1, wherein: the big end gear comprises a first big end gear and a second big end gear, the first big end gear is right-handed helical teeth, and the second big end gear is left-handed helical teeth.
4. The reduction gearbox for turbine fracturing as recited in claim 3, wherein: the planet gear comprises a first gear tooth surface and a second gear tooth surface, wherein the first gear tooth surface is a left-handed helical tooth, and the second gear tooth surface is a right-handed helical tooth.
5. The reduction gearbox for turbine fracturing as recited in claim 4, wherein: the first big end gear is meshed with the first gear tooth surface, and the second big end gear is meshed with the second gear tooth surface.
6. The reduction gearbox for turbine fracturing as recited in claim 1, wherein: the reduction gearbox comprises an input bearing, a flange, an inner gear ring and a planet carrier, wherein the flange is connected with the inner gear ring, the input bearing is arranged in the flange, the input bearing is sleeved on a sun wheel shaft, the inner gear ring is in meshed connection with a planet wheel of a planet wheel set, and the planet carrier is connected with the bearing through a pin shaft.
7. The reduction gearbox for turbine fracturing as recited in claim 6, wherein: the reduction gearbox comprises an output spline shaft and an output spline shaft sleeve, one end of the output spline shaft is connected with the output spline shaft sleeve, and the other end of the output spline shaft is connected with the planet carrier.
8. The reduction gearbox for turbine fracturing as recited in claim 7, wherein: the reduction gearbox comprises an upper box body, a lower box body and an output pin shaft, wherein the upper box body and the lower box body are connected to form a protection box body outside the reduction gearbox, one side of the protection box body is connected with a flange, and the other side of the protection box body is connected with the output spline shaft through the output pin shaft.
9. The reduction gearbox for turbine fracturing as recited in claim 8, wherein: and an observation hole is formed in the upper box body, and a cover plate covers the observation hole.
10. The reduction gearbox for turbine fracturing as recited in claim 8, wherein: the upper box body is provided with a brake device, the output spline shaft sleeve is provided with a brake pad, and the brake device is matched with the brake pad for use.
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CN201921480266.5U CN210600110U (en) | 2019-09-06 | 2019-09-06 | Reduction gearbox for turbine fracturing |
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CN201921480266.5U CN210600110U (en) | 2019-09-06 | 2019-09-06 | Reduction gearbox for turbine fracturing |
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