CN117605817A - Gear box with built-in wet overload clutch and combine harvester thereof - Google Patents
Gear box with built-in wet overload clutch and combine harvester thereof Download PDFInfo
- Publication number
- CN117605817A CN117605817A CN202311789136.0A CN202311789136A CN117605817A CN 117605817 A CN117605817 A CN 117605817A CN 202311789136 A CN202311789136 A CN 202311789136A CN 117605817 A CN117605817 A CN 117605817A
- Authority
- CN
- China
- Prior art keywords
- gear
- input
- wet
- output shaft
- overload clutch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000009977 dual effect Effects 0.000 claims description 14
- 239000000428 dust Substances 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 13
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 27
- 239000010687 lubricating oil Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- 238000005461 lubrication Methods 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 238000003306 harvesting Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
- A01D69/06—Gearings
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
- A01D69/08—Clutches
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
- F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
- F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/12—Details not specific to one of the before-mentioned types
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Transmission Devices (AREA)
Abstract
The invention provides a gear box with a built-in wet overload clutch and a combine harvester thereof, wherein a V belt wheel, an input gear shaft, an inner gear ring, a gear hub and an output shaft; the V belt wheel is connected with the input gear shaft through a spline to transmit torque to the input gear; the input gear is meshed with the annular gear; the inner gear ring is supported on the output shaft through a gear hub, and the gear hub is connected with the output shaft through a wet clutch; according to the invention, a feeding box driving gear box is developed between the V belt pulley and the feeding box on the premise of not changing the original installation space and interface, the V belt pulley is used as an input end, the transmission ratio is 3.038, and the torque of the output end is improved by 3 times compared with that of the belt pulley which is directly driven; the whole gear box is arranged inside the belt wheel, the axial width of the gear box is not more than the width of the V belt wheel, and the maximum excircle is not more than the inner diameter of the V belt wheel; the torque is increased, the problems of abrasion of the friction plate of the overload clutch of the combine harvester are solved, and the gear box has the advantages of simple and compact structure, good reliability, small volume, high transmission efficiency and low maintenance cost.
Description
Technical Field
The invention belongs to the technical field of power transmission devices of self-propelled harvesting mechanical equipment, and relates to a gear box with a built-in wet overload clutch and a combine harvester thereof.
Background
At present, the transmission of a feeding box in the combine harvester is directly driven by an engine through a V belt pulley, and a dry friction overload clutch is arranged at the joint of the center of the V belt pulley and an output shaft.
At present, a feed box transmission mechanism in a combine harvester mainly has two problems: firstly, the V belt wheel is directly driven, so that the output torque is smaller, and the harvesting requirements of various places cannot be met; second, dry friction clutch belongs to externally-arranged, exposes in the air, and combine harvester operational environment is abominable, and the dust is big to deposit ash easily, probably leads to the friction disc wearing and tearing seriously, and the friction disc is often changed, increases maintenance cost.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the gear box with the built-in wet overload clutch and the combine harvester thereof, which increase the torque, solve the problems of abrasion and the like of the friction plate of the overload clutch of the combine harvester, and have the advantages of simple and compact structure, good reliability, small volume, high transmission efficiency and low maintenance cost.
The invention is realized by the following technical scheme:
a gear box with a built-in wet overload clutch comprises a gear box body,
v belt wheel, input gear shaft, inner gear ring, gear hub and output shaft;
the V belt wheel is used as an input source and is connected with an input gear shaft through a spline to transmit torque to the input gear; the input gear is meshed with the annular gear; the inner gear ring is supported on the output shaft through a gear hub, and the gear hub is connected with the output shaft through a wet clutch;
the wet overload clutch comprises a friction plate and a pair of plates;
the gear hub is connected with the output shaft through the friction plate and the dual plate; the friction plate is connected with the gear hub through an external spline; the dual piece is connected with the output shaft through an internal spline; torque is transmitted through friction torque generated between the friction plate and the dual plate;
the output shaft is provided with a belleville spring, and the belleville spring is arranged at one end of the dual piece.
Preferably, the belleville spring is arranged on the spring mounting seat, a round nut is arranged at the rear end of the spring mounting seat, and the positive pressure of the belleville spring is regulated by the round nut;
one end of the friction plate is provided with a spacer for bearing the pressure generated by the spring.
Preferably, the V belt wheel is fixedly connected with one end of the input gear shaft through a screw and a pressing plate, and an O-shaped sealing ring is arranged on the end face of the pressing plate;
the inner gear ring is connected with the gear hub through screws and is supported on the output shaft through a needle bearing;
preferably, the device further comprises an upper shell and a lower shell, wherein the upper shell is connected with the lower shell through bolts;
preferably, the gear box also comprises a sliding bearing and a flange, wherein the sliding bearing and the flange are mounting interfaces of the gear box and are sleeved on the output shaft.
Preferably, the input end of the input gear shaft is supported by an input bearing; the input bearing is arranged between the shaft diameter of the V belt wheel and the upper shell,
preferably, the upper shell is provided with a casting oil groove which leads to an inner hole of the input bearing; the lower shell is provided with an oil plug;
preferably, the front end of the output shaft is supported by an output front bearing, and the rear end of the output shaft is supported by an output rear bearing.
Preferably, a dust cover is arranged between the outermost end of the output shaft and the flange plate; and a radial oil duct is arranged in the inner hole of the output shaft.
Preferably, the input end and the output end of the gear box are respectively provided with an input oil seal and an output oil seal.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a gear box with a built-in wet overload clutch, which comprises a V belt pulley, an input gear shaft, an inner gear ring, a gear hub and an output shaft; the V belt wheel is used as an input source and is connected with an input gear shaft through a spline to transmit torque to the input gear; the input gear is meshed with the annular gear; the inner gear ring is supported on the output shaft through a gear hub, and the gear hub is connected with the output shaft through a wet clutch; according to the invention, a feeding box driving gear box is developed between the V belt pulley and the feeding box on the premise of not changing the original installation space and interface, the V belt pulley is used as an input end, the transmission ratio is 3.038, and the torque of the output end is improved by 3 times compared with that of the belt pulley which is directly driven; the whole gear box is arranged inside the belt wheel, the axial width of the gear box is not more than the width of the V belt wheel, and the maximum excircle is not more than the inner diameter of the V belt wheel; the input and output steering is required to be consistent with the original transmission mechanism; the overload clutch is designed in the gear box, the overload moment requirement is 1300N.m, the torque is increased, meanwhile, the built-in wet overload clutch of the gear box realizes the connection between a gear and an output shaft through a friction plate and a pair plate, wherein the friction plate is connected with a gear hub through an external spline, the pair plate is connected with the output shaft through an internal spline, the gear hub, the friction plate, the pair plate and the output gear shaft rotate together during normal operation, a large amount of heat can be generated due to relative sliding between the friction plate and the pair plate during slipping, after the gear box adopts splash lubrication, the lower friction plate is soaked in the lubricating oil after the gear lubricating oil is injected, and the friction plate and the pair plate are subjected to heat dissipation through the lubricating oil during slipping, so that the wet overload clutch is called. The friction coefficient of the friction plate is reduced when the friction plate is immersed in lubricating oil, so that the friction plate loss is reduced, the service life of the overload clutch is prolonged, and the problem of high maintenance cost due to frequent replacement of the friction plate is solved; the gear box adopts a built-in wet overload clutch scheme, the axial space of the whole gear box is small and does not exceed the width of the V belt wheel, and the problem that the axial size of a finished friction overload clutch with the same torque is too large to be installed is solved; the gear box adopts an internal meshing gear transmission scheme, the utilization rate of the internal space of the shell is high, the structure is simple and compact, and the steering requirement is met. The invention also provides a combine harvester provided with the gear box with the built-in wet overload clutch, so that the problem of abrasion of the friction plate of the overload clutch of the combine harvester is solved, and the combine harvester has wide application prospect.
Furthermore, the input gear shaft of the gear box is limited in axial width and can only be supported at a single point, the input end of the input gear shaft is provided with 2 angular contact ball bearings which are arranged side by side, and the bearings are arranged between the shaft diameter of the V belt wheel and the upper shell of the gear box, so that radial and axial loads generated in the working process of the V belt wheel can be borne, and the service life and reliability of the gear box are improved;
furthermore, the gear hub of the gear box considers the working condition of slipping, the supporting mode adopts the needle bearing, friction between the gear hub and the output shaft during slipping is reduced, damage to the gear hub or the output shaft caused by strong friction is avoided, the condition that the oil temperature of the gear box is increased is avoided, meanwhile, the inner hole of the output shaft is provided with the radial oil duct, and lubrication of the needle bearing during working is ensured;
furthermore, the built-in wet overload clutch of the gear box adopts the standard belleville spring to provide positive pressure, so that compared with the traditional compression spring which provides the same positive pressure, the axial space can be greatly saved, the friction torque can be improved by increasing the positive pressure through increasing the tightening torque of the round nut, the relation between the tightening turns and the friction torque can be obtained through calculation and test, the tightening turns of the round nut can be adjusted to adjust the overload torque, the problem of small axial space of the gear box is solved, the overload clutch is integrated into the gear box, and the utilization rate of the space in the whole gear box shell is improved;
furthermore, the gear meshing of the gear box, the bearing and the overload clutch are all lubricated by splash, the gear meshing working surface is lubricated by stirring oil when the annular gear rotates, meanwhile, a casting oil groove leading to an inner hole of the input bearing is arranged on the upper shell, the splashed lubricating oil is led into the bearing installation part to lubricate the input bearing, the output front bearing, the support roller bearing and the output rear bearing, and the lower shell is provided with oiling, oil discharging and oil surface observation oil plugs to ensure the lubricating oil quantity in the gear box and prolong the service life of the gear box.
Furthermore, the oil seals are arranged at the output end and the output end of the gear box, so that the tightness of the gear box in the working process is ensured, the lubricating oil can effectively lubricate all parts in relative motion, and meanwhile, a dust cover is arranged between the outermost end of the output shaft and the flange plate, so that various dust of the whole vehicle in the harvesting process is prevented from entering the gear box, and the working reliability is improved.
Drawings
FIG. 1 is an overall structural diagram of a gearbox;
FIG. 2 is a block diagram of a built-in wet clutch;
FIG. 3 is a diagram of a gearbox mounting interface;
reference numerals: 1-V belt wheel; 2-an input gear shaft; 3-inputting an oil seal; 4-pressing plates; 5-screws; 6-O-shaped sealing rings; 7-an upper housing; 8-input bearings; 9-an inner gear ring; 10-tooth hubs; 11-output front bearing; 12-needle bearings; 13-spacers; 14-friction plate; 15-dual pieces; 16-belleville springs; 17-a spring mount; 18-a round nut; 19-an output shaft; 20-output rear bearings; 21-outputting an oil seal; 22-a lower housing; 23-a flange plate; 24-a dust cover; 25-slide bearing.
Detailed Description
The invention will now be described in further detail with reference to specific examples, which are intended to illustrate, but not to limit, the invention.
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
The gear box with the built-in wet overload clutch mainly comprises a V belt pulley 1, an upper shell 7, a lower shell 22, an input gear shaft 2, an inner gear ring 9, a gear hub 10, an output shaft 19, a friction plate 14, a butterfly spring 16, a round nut 18, a flange plate 23, a sliding bearing 25 and the like.
As shown in fig. 1, in order to ensure that the input and output directions are the same, a primary internal engaged transmission is adopted, a transmission ratio 3.038 is adopted, a V belt pulley 1 is used as an input source and is connected with an input gear shaft 2 through a spline in operation, the V belt pulley 1 is connected with the input gear shaft 2 through 6 hexagon socket head cap screws 5 on the end face, torque is transmitted to an input gear, the input gear is meshed with an annular gear 9, the torque is transmitted to the annular gear 9, the annular gear 9 is supported on an output shaft 19 by a gear hub 10, the annular gear 9 is fastened with the gear hub 10 through 10 screws, and the gear hub 10 is connected with the output shaft 19 through a wet clutch and transmits the torque;
as shown in fig. 2, the wet overload clutch includes a friction plate 14 and a pair of plates 15;
one end of the friction plate 14 is provided with a spacer 13 for bearing the pressure generated by the spring.
The wet overload clutch means that the output shaft 19 is not directly connected with the gear hub 10, and is connected with 3 dual plates 15 through 3 friction plates 14, wherein the friction plates 14 are connected with the gear hub 10 through external splines, the dual plates 15 are connected with the output shaft 19 through internal splines, torque is transmitted through friction torque of products between the friction plates 14 and the dual plates 15, the gear hub 10, the friction plates 14, the dual plates 15 and the output gear shaft 19 rotate together in normal operation, relative sliding occurs between the friction plates 14 and the dual plates 15 during slipping, a large amount of heat is generated, the gear box adopts splash lubrication, after gear lubricating oil is injected, the lower friction plates are soaked in the lubricating oil, and heat is dissipated between the friction plates 14 and the dual plates 15 through the lubricating oil during slipping, so the wet overload clutch is called. The friction coefficient of the friction plate 14 is reduced because the friction plate is immersed in lubricating oil, so that compared with a dry overload clutch, the friction plate loss is reduced, the service life of the overload clutch is prolonged, and the problem that the friction plate is frequently replaced and the maintenance cost is high is solved;
the output shaft 19 is provided with a belleville spring 16, and the belleville spring 16 is arranged at one end of the dual piece 15. The belleville spring 16 is arranged on the spring mounting seat 17, a round nut 18 is arranged at the rear end of the spring mounting seat 17, and the spring positive pressure of the belleville spring 16 is regulated by the round nut 18; the built-in wet overload clutch of the gearbox adopts the standard belleville spring 16 to provide positive pressure, so that axial space can be greatly saved compared with the traditional compression spring when the same positive pressure is provided, friction torque can be improved by increasing positive pressure through a method of increasing tightening torque of the round nut 18, the relation between the tightening turns and the friction torque can be obtained through calculation and test, the tightening turns of the round nut can be adjusted to adjust the overload torque, the problem of small axial space of the gearbox is solved, the overload clutch is integrated into the interior of the gearbox, and the utilization rate of the space in the whole gearbox shell is improved;
when the torque does not exceed the friction torque generated by the friction plate, and when the output end is overloaded or jammed, the transmission torque exceeds the friction torque generated by the friction plate, slipping can occur between the gear hub 10 and the output shaft 19, the friction plate 14 deforms by means of the belleville springs 16 to generate positive pressure, and the size of the positive pressure is regulated by the round nuts 18 behind the spring seats 17, so that the overload torque of 1300N.m is met.
The V belt wheel 1 is fixedly connected with one end of the input gear shaft 2 through a screw 5 and a pressing plate 4, and an O-shaped sealing ring 6 is arranged on the end face of the pressing plate 4 to prevent oil leakage;
the inner gear ring 9 is connected with the gear hub 10 through screws and is supported on an output shaft 19 through a needle bearing 12;
the device also comprises an upper shell 7 and a lower shell 22, wherein the upper shell 7 and the lower shell 22 are connected through bolts; the upper shell 7 and the lower shell 22 are pressed by 12 hexagonal flange face bolts, and a casting oil groove leading to an inner hole of the input bearing 8 is formed in the upper shell 7; the lower shell 22 is provided with an oil plug;
the front end of the output shaft 19 is supported by the output front bearing 11, and the rear end of the output shaft 19 is supported by the output rear bearing 20, and is respectively supported by a roller bearing and a deep groove ball bearing.
The input end of the input gear shaft 2 is supported by an input bearing 8; the input bearing 8 is arranged between the shaft diameter of the V belt pulley 1 and the upper shell 7, the input bearing 8 adopts an angular contact ball bearing, and in one of the preferred embodiments, the input gear shaft 2 of the gear box has limited axial width and can only support in a single point, the input end of the input gear shaft is provided with 2 angular contact ball bearings arranged side by side, the bearings are arranged between the shaft diameter 1 of the V belt pulley and the upper shell 7 of the gear box, so that radial and axial loads generated in the working process of the V belt pulley 1 can be borne, and the service life and reliability of the gear box are improved;
as shown in fig. 3, the device further comprises a sliding bearing 25 and a flange plate 23, wherein the sliding bearing 25 and the flange plate 23 are the mounting interfaces of the gear box and are sleeved on the output shaft 19; the gear box is arranged on the front end frame of the combine harvester through 5 studs on the flange plate 23 and 2 screws on the lower shell 22, the whole front end frame and the gear box are arranged into a mounting groove of the main frame for mounting the sliding bearing 25, and the sliding bearing on the gear box bears the total weight of the front frame and ensures that the front frame can perform slight pitching motion.
According to the gear hub 10 of the gear box, the working condition of slipping is considered, the needle bearing 12 is adopted in a supporting mode, friction between the gear hub 10 and the output shaft 19 during slipping is reduced, the situation that the gear hub 10 or the output shaft 19 is damaged due to strong friction and the oil temperature of the gear box is increased is avoided, meanwhile, the radial oil duct is arranged in the inner hole of the output shaft 19, and lubrication of the needle bearing during working is guaranteed;
the gear wheel of the gear box is engaged, the bearing and the overload clutch are all in splash lubrication, the gear wheel is lubricated by stirring oil when the annular gear 9 rotates, meanwhile, a casting oil groove leading to an inner hole of an input bearing is arranged on the upper shell 7, the splash lubricating oil is led into a bearing installation part to lubricate the input bearing 8, the output front bearing 11, the support roller bearing 12 and the output rear bearing 20, and the lower shell 22 is provided with oiling, oil discharging and oil surface observation oil plugs to ensure the lubricating oil quantity in the gear box and prolong the service life of the gear box.
The input oil seal 3 and the output oil seal 21 are respectively arranged at the input end and the output end of the gearbox, so that the tightness of the gearbox in the working process is ensured, lubricating oil can effectively lubricate all parts in relative motion, and meanwhile, a dust cover 24 is arranged between the outermost end of the output shaft 19 and the flange plate 23, so that various dust of the whole gearbox in the harvesting process is prevented from entering the gearbox, and the working reliability is improved.
The specific working mode is as follows:
as shown in fig. 1, in operation, the V-pulley 1 is used as an input source and is spline-coupled with the input gear 2, torque is transmitted to the input gear 2, the input gear 2 is meshed with the ring gear 9, torque is transmitted to the ring gear 9, the ring gear 9 is supported on the output shaft 19 by the hub 10, the output shaft 19 is coupled with the hub 10 through a built-in wet overload clutch, torque is transmitted through friction torque of a product between the friction plate 14 and the pair plate 15, normal operation can be achieved when the torque does not exceed the friction torque generated by the friction plate 14, and slip occurs between the hub 10 and the output shaft 19 when the transmitted torque exceeds the friction torque generated by the friction plate 4 when overload or jamming occurs at the output end.
As shown in fig. 2, power is transmitted to the inner gear ring 9 through the input gear 2, the gear hub 10 is connected with the inner gear ring 9 through 10 hexagon head bolts, the gear hub 10 is connected with the output shaft 19 through a built-in wet overload clutch and transmits torque, the overload clutch consists of 3 friction plates 14 and 3 pair plates 15, wherein the friction plates 14 are connected with the gear hub through external splines, the pair plates 15 are connected with the output shaft through internal splines, the gear hub 10, the friction plates 14, the pair plates 15 and the output shaft 19 rotate together during normal operation, relative sliding occurs between the friction plates 14 and the pair plates 15 during slipping, power transmission is interrupted, and important parts such as an engine on the combine harvester are protected; the normal belleville spring 16 is adopted to provide positive pressure, the positive pressure can be increased by increasing the nut tightening torque to increase the friction torque, the relation between the tightening turns and the friction torque can be obtained through calculation and test, and the tightening turns of the round nut 18 can be adjusted to adjust the overload torque.
It is noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present invention and in the foregoing figures, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention in any way; those skilled in the art will readily appreciate that the present invention may be implemented as shown in the drawings and described above; however, those skilled in the art will appreciate that many modifications, adaptations, and variations of the present invention are possible in light of the above teachings without departing from the scope of the invention; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present invention still fall within the scope of the present invention.
Claims (10)
1. A gear box with a built-in wet overload clutch is characterized by comprising,
the gear comprises a V belt wheel (1), an input gear shaft (2), an inner gear ring (9), a gear hub (10) and an output shaft (19);
the V belt wheel (1) is used as an input source and is connected with an input gear shaft (2) through a spline to transmit torque to the input gear; the input gear is meshed with the annular gear (9); the inner gear ring (9) is supported on an output shaft (19) through a gear hub (10), and the gear hub (10) is connected with the output shaft (19) through a wet clutch;
the wet overload clutch comprises a friction plate (14) and a pair of plates (15);
the gear hub (10) is connected with the output shaft (19) through the friction plate (14) and the dual plate (15); the friction plate (14) is connected with the gear hub (10) through an external spline; the pair of coupling pieces (15) are connected with the output shaft (19) through internal splines; torque is transmitted through friction torque generated between the friction plate (14) and the dual plate (15); the output shaft (19) is provided with a belleville spring (16), and the belleville spring (16) is arranged at one end of the dual piece (15).
2. The gear box with the built-in wet overload clutch according to claim 1, wherein the belleville spring (16) is installed on a spring installation seat (17), a round nut (18) is arranged at the rear end of the spring installation seat (17), and the pressure of the belleville spring (16) is adjusted through the round nut (18);
one end of the friction plate (14) is provided with a spacer (13) for bearing the pressure generated by the spring.
3. The gear box with the built-in wet overload clutch according to claim 1, wherein the V belt wheel (1) is fixedly connected with one end of an input gear shaft (2) through a screw (5) and a pressing plate (4), and an O-shaped sealing ring (6) is arranged on the end face of the pressing plate (4);
the inner gear ring (9) is connected with the gear hub (10) through screws, and is supported on the output shaft (19) through a needle bearing (12).
4. A gearbox incorporating a wet overload clutch according to claim 1 further comprising an upper housing (7) and a lower housing (22), the upper housing (7) and lower housing (22) being bolted.
5. The gear box with the built-in wet overload clutch according to claim 4, further comprising a sliding bearing (25) and a flange plate (23), wherein the sliding bearing (25) and the flange plate (23) are installation interfaces of the gear box and are sleeved on the output shaft (19); a dust cover (24) is arranged between the outermost end of the output shaft (19) and the flange plate (23).
6. A gearbox incorporating a wet overload clutch according to claim 4 characterised in that the input end of the input gear shaft (2) is supported by an input bearing (8); the input bearing (8) is arranged between the shaft diameter of the V belt wheel (1) and the upper shell (7), and the input bearing (8) adopts 2 side-by-side angular contact ball bearings.
7. A gearbox incorporating a wet overload clutch according to claim 6 characterised in that the upper housing (7) is provided with a cast oil sump leading to the bore of the input bearing (8); an oil plug is arranged on the lower shell (22).
8. A gearbox incorporating a wet overload clutch according to claim 1 characterised in that the front end of the output shaft (19) is supported by an output front bearing (11) and the rear end of the output shaft (19) is supported by an output rear bearing (20); and a radial oil duct is arranged in the inner hole of the output shaft (19).
9. A gearbox incorporating a wet overload clutch according to claim 1 characterised in that the input and output of the gearbox are provided with an input oil seal (3) and an output oil seal (21) respectively.
10. A combine harvester fitted with a built-in wet overload clutch gearbox based on any one of claims 1-9, characterized in that the built-in wet overload clutch gearbox is fitted on the front frame of the combine harvester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311789136.0A CN117605817A (en) | 2023-12-23 | 2023-12-23 | Gear box with built-in wet overload clutch and combine harvester thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311789136.0A CN117605817A (en) | 2023-12-23 | 2023-12-23 | Gear box with built-in wet overload clutch and combine harvester thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117605817A true CN117605817A (en) | 2024-02-27 |
Family
ID=89951665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311789136.0A Pending CN117605817A (en) | 2023-12-23 | 2023-12-23 | Gear box with built-in wet overload clutch and combine harvester thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117605817A (en) |
-
2023
- 2023-12-23 CN CN202311789136.0A patent/CN117605817A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NO753606L (en) | ||
| US10112483B2 (en) | Hydraulic pump assembly with forward driveshaft clearance | |
| US10274074B1 (en) | Transfer case having a lubrication guide | |
| CN113108000B (en) | Main clutch system of mechanical bulldozer | |
| CN117605817A (en) | Gear box with built-in wet overload clutch and combine harvester thereof | |
| CN201521559U (en) | Roller-diaphragm combined coupling | |
| CN210565054U (en) | Cam rotor pump | |
| CN103899728A (en) | Air control type double planet wheel brake clutch | |
| CN202510583U (en) | Pull-type self-aligning hydraulic release bearing wheel cylinder unit | |
| CN208997276U (en) | A kind of deceleration output mechanism of gearbox | |
| CN209557628U (en) | The connection spline lubricating structure of electric commercial vehicle motor and gearbox | |
| CN103043217B (en) | Power output assembly of aviation piston engine | |
| CN207229707U (en) | A kind of special thrust pack arrangement of gear reducer | |
| CN206168950U (en) | Lubricated good inner loop oil lubrication crowned -tooth coupling of increment | |
| CA2460978C (en) | Method of reducing torque shock on a transmission | |
| CN219055984U (en) | Rear power take-off system | |
| CN111692053A (en) | Main shaft system transmission system of wind generating set | |
| CN212297440U (en) | A reduction gear that is used for two stroke aviation piston engine of middle-size and small-size unmanned aerial vehicle | |
| CN220118535U (en) | Improved generation broken axle friction disc clutch | |
| CN219492394U (en) | High-power output device of diesel engine | |
| CN219492890U (en) | Power transmission wet clutch | |
| CN205533878U (en) | Overload protection shaft coupling for press | |
| CN220870041U (en) | Gear box with oil pump | |
| CN216660195U (en) | Non-impact shaft transmission system, electric motorcycle power system and electric motorcycle | |
| CN203752885U (en) | Double motor assembly of hybrid electric bus integrated dual planetary wheel brake clutch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |