CN105715759A - Small hydraulic-transmission speed changer of agricultural machinery - Google Patents
Small hydraulic-transmission speed changer of agricultural machinery Download PDFInfo
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- CN105715759A CN105715759A CN201610302384.1A CN201610302384A CN105715759A CN 105715759 A CN105715759 A CN 105715759A CN 201610302384 A CN201610302384 A CN 201610302384A CN 105715759 A CN105715759 A CN 105715759A
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- 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
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
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Abstract
The invention relates to a small hydraulic-transmission speed changer of agricultural machinery. The small hydraulic-transmission speed changer comprises a hydrostatic transmission (HST) and a speed changing box, wherein the HST comprises a power inlet belt wheel and an HST part; the speed changing box comprises a walling power transmission part, an output power transmission part and a lubricating part; the power inlet belt wheel is connected with the HST part; the HST, a brake part, a clutch part and a walking driving part are respectively and correspondingly connected with the speed changing box. The small hydraulic-transmission speed changer is capable of realizing multiple functions such as stepless speed change walking drive for forward, back, steering, clutching and brake of the agricultural machinery, and two-gear power output; submerged lubrication for an internal gear of a box body and a lubricating structure of an oil flinger are adopted, so that flowing of lubricating oil in the speed changing box can be well enhanced, and the lubricating effect is improved; an overall wet-type friction brake structure is adopted, so that integral assembly and disassembly of the brake part can be convenient, and the small hydraulic-transmission speed changer is compact in structure, small in volume, simple in operation and convenient to manufacture and maintain.
Description
Technical field
The invention belongs to agricultural machinery technological field, be specifically related to a kind of miniature farm machinery hydraulic drive variator.
Background technology
Small-scale agricultural machinery requires that package size is little, handles simple and convenient, and therefore miniature farm machinery transmission speed variator wants cube little, compact conformation.The domestic existing usual volume of agricultural machinery drive transmission device is big, and great majority adopt mechanical speed change mode, inconvenient operation；Function singleness, exists that to be difficult to integrated advance simultaneously, retrogressing, turning, clutch, braking and multiple-ratio power output etc. multi-functional.Abroad have liquid collecting press pump, hydraulic motor and gear-box in one drive transmission device, its compact conformation, volume is little, but manufacture, operation and maintenance all highly difficult.The agricultural machinery drive transmission device of integrated hydrostatic transmissions device HST and change speed gear box is the development trend of Modern Agricultural Machine transmission and driving, its compact conformation, and volume is little, simple to operate, manufactures and easy to maintenance.
Summary of the invention
It is an object of the invention to provide one for miniature farm machinery hydraulic drive variator, its compact conformation, volume is little, and integrated functionality is many, handles simple, it is simple to manufacture and maintenance.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that a kind of miniature farm machinery hydraulic drive variator, including hydrostatic transmissions device HST1 and change speed gear box 2, described hydrostatic transmissions device HST1 includes power input pulley 11 and hydrostatic drive portion 12, described change speed gear box 2 includes walking motivation transfer motion part 21, output motivation transfer motion part 22 and lubrication portion 23, described power input pulley 11 is connected with hydrostatic drive portion 12, described hydrostatic transmissions device HST1, brake part 3, clutch part 4 and hoofing part part 5 are corresponding with change speed gear box 2 respectively to be connected；Described hydrostatic transmissions device HST1 is that walking carries out power transmission, it is possible to achieve infinitely variable speeds, simplifies drive transmission device structure, handiness.
Described walking motivation transfer motion part 21 includes power input shaft I211, transition axis 212, main shaft 213 and input gear I214, transition gear 215, little gear 216, intermediate drive gear 217 and shifting slide gear 218；The two ends of described power input shaft I211, transition axis 212 and main shaft 213 support with bearing respectively；Described input gear I214 is the shaft gear on described power input shaft I211, described transition gear 215 is the shaft gear on described transition axis 212, splined hole is set in described little gear 216, it is connected with described transition axis 212 spline, set splined hole in described intermediate drive gear 217 simultaneously, being connected with described main shaft 213 spline, described intermediate drive gear 217 both sides are provided with thread form hock；Described input gear I214 engages with described transition gear 215, described little gear 216 engages with described intermediate drive gear 217, described shifting slide gear 218 end face is provided with thread form hock, engage in side dental inlay with described intermediate drive gear 217, engage with the driving gear 52 of described hoofing part part 5, and described shifting slide gear 218 empty set is on described main shaft 213.
Described output motivation transfer motion part 22 includes power input shaft II2201, transition I axle 2202, transition II axle 2203, transition III axle 2204 and power output shaft 2205 and input gear II2206, duplicate gear I2207, duplicate gear II2208, little gear I2209, the little gear little gear of II2210, I shelves 2211, the little gear 2212 of II shelves, I shelves gear wheel 2213, II shelves gear wheel 2214, shift carriage 2215, selector fork 2216, abutment sleeve I2217 and abutment sleeve II2218；Described power input shaft II2201, transition I axle 2202, transition II axle 2203, transition III axle 2204 and power output shaft 2205 are respectively adopted bearing supporting, described input gear II2206 is the shaft gear on described power input shaft II2201, described duplicate gear I2207 and duplicate gear II2208 is the shaft gear on described transition I axle 2202, described little gear I2209 is the shaft gear on described transition II axle 2203, described little gear II2210, the little gear of I shelves 2211 and the little gear 2212 of II shelves are the shaft gears on transition III axle 2204, described shift carriage 2215 is connected with power output shaft 2205 spline, described I shelves gear wheel 2213 and II shelves gear wheel 2214 empty set are on described power output shaft 2205, and corresponding with described abutment sleeve I2217 and abutment sleeve II2218 respectively contact location；Described input gear II2206 engages with described duplicate gear I2207, described duplicate gear II2208 engages with described little gear I2209, described little gear I2209 and described little gear II2210 engagement, the little gear 2211 of described I shelves and I shelves gear wheel 2213, the described little gear of II shelves 2212 and the corresponding engagement respectively of II shelves gear wheel 2214, a cylinder shape groove is had in the middle of described shift carriage 2215, there is thread form hock at two ends, can engage with I shelves gear wheel 2213 or II shelves gear wheel 2214 dental inlay respectively, described selector fork 2216 contacts with shift carriage 2215 groove, can fiddle with along the described axial two ends of power output shaft 2205 shift carriage 2215 by handling selector fork 2216, realize power shift switching, described power output shaft 2205 outer end is connected with other actuating units and exports power.
Described lubrication portion 23 includes disc 231, oil collection plate 232, oil-in 233, air bleeding valve 234, observes oilhole 235, oil mirror 236, drain oil 237 and purge cock 238；Described disc 231 is arranged on described transition I axle 2202, described oil collection plate 232 is connected on described change speed gear box 2 outer casing inner wall, described oil collection plate 232 is provided with oil leaking hole, in oil leaking hole, oil spill lubricates described power input I axle 211 respectively, transition axis 212, gear on power input II axle 2201 and transition I axle 2202, described oil-in 233 is arranged on above described change speed gear box 2 shell, in described change speed gear box 2, lubricating oil is injected by described oil-in 233, described oil-in 233 is installed described air bleeding valve 234, operationally aerofluxus is intrinsic pressure with what balance in change speed gear box 2, described observation oilhole 235 is arranged on described change speed gear box 2 shell middle and upper part, described observation oilhole 235 is installed described oil mirror 236, in order to observe height and the quality of lubricating oil liquid level in change speed gear box 2, described drain oil 237 is arranged on below described change speed gear box 2 shell, described drain oil 237 is installed described purge cock 238, open purge cock 238 and discharge waste lubricating oil.
Described clutch part 3 includes hydraulic cylinder 301, support 302, screw 303, compresses sheet 304, oil sealing 305, bearing I 306, shift fork 307, throw-out collar 308, back-moving spring 309, back-up ring I310, bearing I I311 and back-up ring II312；Described hydraulic cylinder 301 is arranged on described change speed gear box 2 shell, described shift fork 307 is arranged on the shell of described change speed gear box 2 by described oil sealing 305 and bearing I 306, described support 302 is arranged on described shift fork 307 axle head by screw 303 and compression sheet 304, the work actuating station of described shift fork 307 contacts with described shifting slide gear 218, described throw-out collar 308 is installed in the outside of described shifting slide gear 218, when the piston rod of described hydraulic cylinder 301 acts on described support 302, left and right two stands 302 drives the shift fork 307 of correspondence to rotate, under described shift fork 307 acts on, the dental inlay of described shifting slide gear 218 and described intermediate drive gear 217 disengages, walking power cut, at the internally installed described back-moving spring 309 of described shifting slide gear 218, described back-moving spring 309, back-up ring I310, bearing I I311 and back-up ring II312 empty set are arranged on described main shaft 213 end, after the piston rod active force of described hydraulic cylinder 301 is cancelled, under the reset thrust of described back-moving spring 309, described shifting slide gear 218 to the sliding of described intermediate drive gear 217 and is fitted together to, thus recovering walking power transmission.
Described brake part 4 includes end cap 41, steel wire collar 42, tabletting 43, static friction sheet 44, movable friction plate 45 and bearing 46, described end cap 41 is provided with cylinder 411, bolt connecting hole 412 and dismounting screwed hole 413, and cylinder 411 is offered three square grooves 4111 and a steel wire draw-in groove 4112；It is internal that described tabletting 43, static friction sheet 44 and movable friction plate 45 order are installed on described cylinder 411, wherein said tabletting 43 is only a piece of, static friction sheet 44 and movable friction plate 45 have multi-disc, selected to determine by the size of brake control power needed for agricultural machinery, and two kinds of friction plates are spaced in groups, in described tabletting 43 and static friction sheet 44, shape is circular hole, and cylindrical is provided with three square journal stirrups, square journal stirrup is arranged in described square groove 4111, limits the rotation of described tabletting 43 and static friction sheet 44；Described movable friction plate 45 is internal is profile of tooth, and profile is cylinder, engages with described shifting slide gear 218, then described movable friction plate 45 rotates together with described shifting slide gear 218；Described steel wire collar 42 is arranged in described steel wire draw-in groove 4112, it is prevented that described tabletting 43 and the landing from the cylinder 411 of described end cap 41 of quiet movable friction plate group；Described brake part 4 has two pieces, is arranged on described main shaft 213 two ends by described bearing 46, and is connected with described change speed gear box 2 casing screws by described bolt connecting hole 412；Installing/dismounting screw in described dismounting screwed hole 413, it is simple to integral demounting brake part 4, repair and maintenance is convenient；During brake operation, the piston rod of described hydraulic cylinder 301 can make in described support 302, described shifting slide gear 218 is made to depart from described intermediate drive gear 217 thus rotating described shift fork 307, described shifting slide gear 218 continues to press on described throw-out collar 308 and compresses described tabletting 43, static friction sheet 44 and movable friction plate 45, realize being expert at while walking power cuts off and brake, after cancelling brake, described hydraulic cylinder 301 active force is cancelled, pressure between described tabletting 43, static friction sheet 44 and movable friction plate 45 is cancelled, and braking action disappears；It is internal that cylinder 411 part of described brake part 4 is entirely located in described change speed gear box 2, and in dip lubrication oil, described square groove 4111 structure is conducive to lubricating oil to penetrate between sound friction plate gap, ensures that Wet-type friction slice normally uses.
Described hoofing part part 5 includes back-up ring 51, drives gear 52, bearing 53, bearing holder (housing, cover) 54, hoofing part semiaxis 55 and half shaft housing 56；Described driving gear 52 and hoofing part semiaxis 55 spline engagement, positioned by described back-up ring 51, described hoofing part semiaxis 55 is arranged in described half shaft housing 56, supported by described bearing 53, described bearing 53 is arranged in described bearing holder (housing, cover) 54, described half shaft housing 56 is connected with described change speed gear box 2 casing screws, and described hoofing part semiaxis 55 outer end is connected with the driving running gear of agricultural machinery, it is achieved walking power transmission.
Described hydrostatic drive portion 12 is connected with described change speed gear box 2 casing screws, is connected by spline, it is achieved hydraulic stepless speed change between the hydraulic power output shaft 121 of described hydrostatic drive portion 12 and the power input shaft I211 of described walking power running part 21；The transfer motion power output shaft 122 of described hydrostatic drive portion 12 and the power input shaft II2201 spline of described output motivation transfer motion part 22 connect, it is achieved power transmission speed change and two grades of power outputs.
The present invention is compared with the prior art, have the following advantages and beneficial effect: miniature farm machinery hydraulic drive variator of the present invention is integrated applies hydrostatic transmissions device HST and change speed gear box technology, it is achieved the advance of agricultural machinery, retrogressing, turning, clutch, braking infinitely variable speeds hoofing part and two grades of power outputs etc. multi-functional；Adopt the lubrication system of box house gear flooding system lubrication and disc, be conducive to strengthening transmission internal lubricating oil flow, improve lubricant effect；Adopt integrated wet friction brake structure, convenient brake part integral disassembly, assembly.Miniature farm machinery hydraulic drive speed changer structure of the present invention is compact, and volume is little, handles simple, manufactures and easy to maintenance.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the schematic diagram of lubrication portion in the present invention.
Fig. 3 is the A-A sectional view of Fig. 2.
Fig. 4 is clutch part separation structure schematic diagram in the present invention.
Fig. 5 is brake part-structure schematic diagram in the present invention.
In figure: 1-hydrostatic transmissions device HST, 11-power input pulley, 12-hydrostatic drive portion, 121-hydraulic power output shaft, 122-transfer motion power output shaft, 2-change speed gear box, 21-walks motivation transfer motion part, 211-power input shaft I, 212-transition axis, 213-main shaft, 214-input gear I, 215-transition gear, the little gear of 216-, 217-intermediate drive gear, 218-shifting slide gear, 22-exports motivation transfer motion part, 2201-power input shaft II, 2202-transition I axle, 2203-transition II axle, 2204-transition III axle, 2205-power output shaft, 2206-input gear II, 2207-duplicate gear I, 2208-duplicate gear II, the little gear I of 2209-, the little gear II of 2210-, the little gear of 2211-I shelves, the little gear of 2212-II shelves, 2213-I shelves gear wheel, 2214-II shelves gear wheel, 2215-shift carriage, 2216-selector fork, 2217-abutment sleeve I, 2218-abutment sleeve II, 23-lubrication portion, 231-disc, 232-oil collection plate, 233-oil-in, 234-air bleeding valve, 235-observes oilhole, 236-oil mirror, 237-drain oil, 238-purge cock, 3-clutch part, 301-hydraulic cylinder, 302-support, 303-screw, 304-compresses sheet, 305-oil sealing, 306-bearing I, 307-shift fork, 308-throw-out collar, 309-back-moving spring, 310-back-up ring I, 311-bearing I I, 312-back-up ring II, 4-brakes part, 41-end cap, 42-steel wire collar, 43-tabletting, 44-static friction sheet, 45-movable friction plate, 46-bearing, 5-hoofing part part, 51-back-up ring, 52-drives gear, 53-bearing, 54-bearing holder (housing, cover), 55-hoofing part semiaxis, 56-half shaft housing.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Refer to Fig. 1 ~ 3, a kind of miniature farm machinery hydraulic drive variator, including hydrostatic transmissions device HST1 and change speed gear box 2, described hydrostatic transmissions device HST1 includes power input pulley 11 and hydrostatic drive portion 12, described change speed gear box 2 includes walking motivation transfer motion part 21, output motivation transfer motion part 22 and lubrication portion 23, described power input pulley 11 is connected with hydrostatic drive portion 12, external impetus passes through the incoming hydrostatic transmissions device HST1 of power input pulley 11, described hydrostatic transmissions device HST1, brake part 3, clutch part 4 and hoofing part part 5 are corresponding with change speed gear box 2 respectively to be connected；The power of incoming hydrostatic transmissions device HST1 is divided into two parts, a part of power is by after hydrostatic drive portion 12 hydraulic pressure transfer, by the walking motivation transfer motion part 21 of change speed gear box 2, power is carried out speed change conversion again, it is delivered to described hoofing part part 5, power is provided for small-scale agricultural machinery walking, the output motivation transfer motion part 22 that another part power is directly delivered to change speed gear box 2 by hydrostatic drive portion 12 carries out speed change conversion and exports, and for small-scale agricultural machinery, other perform system and provide power；Described hydrostatic transmissions device HST1 is that walking carries out power transmission, it is possible to achieve infinitely variable speeds, simplifies drive transmission device structure, handiness.
Described walking motivation transfer motion part 21 includes power input shaft I211, transition axis 212, main shaft 213 and input gear I214, transition gear 215, little gear 216, intermediate drive gear 217 and shifting slide gear 218；The two ends of described power input shaft I211, transition axis 212 and main shaft 213 support with bearing respectively；Described input gear I214 is the shaft gear on described power input shaft I211, and in power input shaft I211, shape is internal spline structure；Described transition gear 215 is the shaft gear on described transition axis 212, sets splined hole in described little gear 216, is connected with described transition axis 212 spline；Setting splined hole in described intermediate drive gear 217, be connected with described main shaft 213 spline, described intermediate drive gear 217 both sides are provided with thread form hock；Described input gear I214 engages with described transition gear 215, and described little gear 216 engages with described intermediate drive gear 217；Described shifting slide gear 218 end face is provided with thread form hock, engage in side dental inlay with described intermediate drive gear 217, engage with the driving gear 52 of described hoofing part part 5, and described shifting slide gear 218 empty set is on described main shaft 213, thus realizing power speed changing and transmission, the walking for small-scale agricultural machinery provides power.
Described output motivation transfer motion part 22 includes power input shaft II2201, transition I axle 2202, transition II axle 2203, transition III axle 2204 and power output shaft 2205 and input gear II2206, duplicate gear I2207, duplicate gear II2208, little gear I2209, the little gear little gear of II2210, I shelves 2211, the little gear 2212 of II shelves, I shelves gear wheel 2213, II shelves gear wheel 2214, shift carriage 2215, selector fork 2216, abutment sleeve I2217 and abutment sleeve II2218；Described power input shaft II2201, transition I axle 2202, transition II axle 2203, transition III axle 2204 and power output shaft 2205 are respectively adopted bearing supporting；Described input gear II2206 is the shaft gear on described power input shaft II2201, and in power input shaft II2201, shape is internal spline structure；Described duplicate gear I2207 and duplicate gear II2208 is the shaft gear on described transition I axle 2202, described little gear I2209 is the shaft gear on described transition II axle 2203, the described little gear little gear of II2210, I shelves 2211 and the little gear 2212 of II shelves are the shaft gears on transition III axle 2204, described shift carriage 2215 is connected with power output shaft 2205 spline, described I shelves gear wheel 2213 and II shelves gear wheel 2214 empty set are on described power output shaft 2205, and corresponding with described abutment sleeve I2217 and abutment sleeve II2218 respectively contact location；Described input gear II2206 engages with described duplicate gear I2207, described duplicate gear II2208 engages with described little gear I2209, described little gear I2209 and described little gear II2210 engagement, the little gear 2211 of described I shelves and I shelves gear wheel 2213, the described little gear of II shelves 2212 and the corresponding engagement respectively of II shelves gear wheel 2214, a cylinder shape groove is had in the middle of described shift carriage 2215, there is thread form hock at two ends, can engage with I shelves gear wheel 2213 or II shelves gear wheel 2214 dental inlay respectively, described selector fork 2216 contacts with shift carriage 2215 groove, can fiddle with along the described axial two ends of power output shaft 2205 shift carriage 2215 by handling selector fork 2216, realize power shift switching, described power output shaft 2205 outer end is connected with other actuating units and exports power.
Described lubrication portion 23 includes disc 231, oil collection plate 232, oil-in 233, air bleeding valve 234, observes oilhole 235, oil mirror 236, drain oil 237 and purge cock 238；Described disc 231 is arranged on described transition I axle 2202 by pin, and described oil collection plate 232 is welded to connect on described change speed gear box 2 outer casing inner wall；In the blade-section dip lubrication oil of disc 231, during disc 231 high speed rotating, lubricating oil is thrown toward on the inwall of described change speed gear box 2 shell, described oil collection plate 232 gathers a large amount of lubricating oil, oil collection plate 232 is provided with oil leaking hole, the gear on oil spill lubricating power input I axle 211 respectively, transition axis 212, power input II axle 2201 and transition I axle 2202 in oil leaking hole；Described oil-in 233 is arranged on above described change speed gear box 2 shell, in described change speed gear box 2, lubricating oil is injected by described oil-in 233, described oil-in 233 is installed described air bleeding valve 234, operationally aerofluxus is intrinsic pressure with what balance in change speed gear box 2, described observation oilhole 235 is arranged on described change speed gear box 2 shell middle and upper part, described observation oilhole 235 is installed described oil mirror 236, in order to observe height and the quality of lubricating oil liquid level in change speed gear box 2, described drain oil 237 is arranged on below described change speed gear box 2 shell, described drain oil 237 is installed described purge cock 238, open purge cock 238 and discharge waste lubricating oil.
Referring to Fig. 4, described clutch part 3 includes hydraulic cylinder 301, support 302, screw 303, compresses sheet 304, oil sealing 305, bearing I 306, shift fork 307, throw-out collar 308, back-moving spring 309, back-up ring I310, bearing I I311 and back-up ring II312；Described hydraulic cylinder 301 is connected by screw and is arranged on described change speed gear box 2 shell, described shift fork 307 is arranged on the shell of described change speed gear box 2 by described oil sealing 305 and bearing I 306, wherein said oil sealing 305 seals, bearing I 306 selects needle bearing, described support 302 is arranged on described shift fork 307 axle head by screw 303 and compression sheet 304, the work actuating station of described shift fork 307 contacts with described shifting slide gear 218, and described throw-out collar 308 is installed in the outside of described shifting slide gear 218；When the piston rod of described hydraulic cylinder 301 acts on described support 302, left and right two stands 302 drives the shift fork 307 of correspondence to rotate, and under described shift fork 307 acts on, the dental inlay of described shifting slide gear 218 and described intermediate drive gear 217 departs from, walking power cut；At the internally installed described back-moving spring 309 of described shifting slide gear 218, described back-moving spring 309, back-up ring I310, bearing I I311 and back-up ring II312 empty set are arranged on described main shaft 213 end, and described bearing I I311 is thrust ball bearing, spring-compressed effect when reducing clutch action and fretting wear between the part that produces and heat；After the piston rod active force of described hydraulic cylinder 301 is cancelled, under the reset thrust of described back-moving spring 309, described shifting slide gear 218 to the sliding of described intermediate drive gear 217 and is fitted together to, thus recovering walking power transmission.
Referring to Fig. 5, described brake part 4 includes end cap 41, steel wire collar 42, tabletting 43, static friction sheet 44, movable friction plate 45 and bearing 46, described end cap 41 is provided with 411, four link bolt hole 412 of a cylinder and two dismounting screwed holes 413, and cylinder 411 is offered three square grooves 4111 and a steel wire draw-in groove 4112；It is internal that described tabletting 43, static friction sheet 44 and movable friction plate 45 order are installed on described cylinder 411, wherein said tabletting 43 is only a piece of, static friction sheet 44 and movable friction plate 45 have multi-disc, selected to determine by the size of brake control power needed for agricultural machinery, and two kinds of friction plates are spaced in groups, in described tabletting 43 and static friction sheet 44, shape is circular hole, and cylindrical is provided with three square journal stirrups, square journal stirrup is arranged in described square groove 4111, limits the rotation of described tabletting 43 and static friction sheet 44；Described movable friction plate 45 is internal is profile of tooth, and profile is cylinder, engages with described shifting slide gear 218, then described movable friction plate 45 rotates together with described shifting slide gear 218；Described steel wire collar 42 is arranged in described steel wire draw-in groove 4112, it is prevented that described tabletting 43 and the landing from the cylinder 411 of described end cap 41 of quiet movable friction plate group；Described brake part 4 has two pieces, is arranged on described main shaft 213 two ends by described bearing 46, and is connected with described change speed gear box 2 casing screws by described bolt connecting hole 412；Installing/dismounting screw in described dismounting screwed hole 413, it is simple to integral demounting brake part 4, repair and maintenance is convenient；During brake operation, the piston rod of described hydraulic cylinder 301 can make in described support 302, described shifting slide gear 218 is made to depart from described intermediate drive gear 217 thus rotating described shift fork 307, described shifting slide gear 218 continues to press on described throw-out collar 308 and compresses described tabletting 43, static friction sheet 44 and movable friction plate 45, realize being expert at while walking power cuts off and brake, after cancelling brake, described hydraulic cylinder 301 active force is cancelled, pressure between described tabletting 43, static friction sheet 44 and movable friction plate 45 is cancelled, and braking action disappears；It is internal that cylinder 411 part of described brake part 4 is entirely located in described change speed gear box 2, and in dip lubrication oil, described square groove 4111 structure is conducive to lubricating oil to penetrate between sound friction plate gap, ensures that Wet-type friction slice normally uses.
Referring to Fig. 1, Fig. 3, described hoofing part part 5 includes back-up ring 51, drives gear 52, bearing holder (housing, cover) 54, hoofing part semiaxis 55 and half shaft housing 56；Described driving gear 52 and hoofing part semiaxis 55 spline engagement, positioned by described back-up ring 51, described hoofing part semiaxis 55 is arranged in described half shaft housing 56, supported by described bearing 53, described bearing 53 is arranged in described bearing holder (housing, cover) 54, described half shaft housing 56 is connected with described change speed gear box 2 casing screws, and described hoofing part semiaxis 55 outer end is connected with the driving running gear of agricultural machinery, it is achieved walking power transmission.
Described hydrostatic drive portion 12 is connected with described change speed gear box 2 casing screws, it is connected by spline between the hydraulic power output shaft 121 of described hydrostatic drive portion 12 and the power input shaft I211 of described walking motivation transfer motion part 21, realize hydraulic stepless speed change, the transfer motion power output shaft 122 of described hydrostatic drive portion 12 and the power input shaft II2201 spline of described output motivation transfer motion part 22 connect, it is achieved power transmission speed change and two grades of power outputs.
Being further appreciated by the present invention for the ease of technical staff, the work process below in conjunction with specific embodiment, Fig. 1 ~ 5 pair present invention elaborates.During operation, external impetus inputs hydrostatic transmissions device HST1 by power input pulley 11, and power is by different drive paths, it is achieved following difference in functionality.
(1) stepless walking (advance, retreat) speed change.A part of power of input hydrostatic transmissions device HST1 is by described hydrostatic drive portion 12 hydraulic pressure transfer, infinitely variable speeds can be realized, the power of infinitely variable speeds is by driving gear 52 → hoofing part semiaxis 55 of power input shaft I211 → input gear I214 → transition gear 215 → little gear, 216 → intermediate drive gear, 217 → shifting slide gear, 218 → hoofing part part 5 of hydraulic power output shaft 121 → walking motivation transfer motion part 21 of described hydrostatic drive portion 12, thus realizing stepless walking speed changing function；When the hydraulic power output shaft 121 of described hydrostatic transmissions device HST1 rotates forward, agricultural machinery advances, otherwise, then agricultural machinery then retreats.
(2) clutch, turning (to turn right) and braking.In agricultural machinery advance process, act on described support 302 by the described right piston rod of hydraulic cylinder 301, operate right shift fork 307 to rotate counterclockwise, described shifting slide gear 218 moves outward, disengage with the dental inlay of described intermediate drive gear 217, walking power cut, under the continuous action of right shift fork 307, described shifting slide gear 218 promotes described throw-out collar 308 to move outward, in being displaced outwardly process, shifting slide gear 218 compresses described back-moving spring 309, overcome its resistance, described throw-out collar 308 moves past in journey the tabletting 43 coming into contact with and compressing in brake part 4 outside, static friction sheet 44 and movable friction plate 45, under the effect of the pressure, frictional resistance can be produced between sound friction plate, limit the rotation of described shifting slide gear 218, thus limiting the rotation driving gear 52 of hoofing part part 5, described hoofing part semiaxis 55 is made to slow down and brake, so that left and right semiaxis produces speed difference, realize turning right；For turning left, principle is identical with right-hand bend.
When the left and right piston rod of described hydraulic cylinder 301 acts on simultaneously, left shift fork 307 rotates clockwise, right shift fork rotates counterclockwise, so that left and right shifting slide gear 218 all departs from the dental inlay of intermediate drive gear 217, the power causing left and right walking jack shaft 54 cuts off simultaneously, identical with right-hand bend principle, under the effect of brake part 4, left and right walking jack shaft 55 slows down simultaneously and brakes, thus realizing brake.When agricultural machinery stops on slope, handle left and right shift fork 307 by machinery parking brake, similarly, it is achieved left and right walking jack shaft 55 is braked and parking.
(3) two grades of power transmission.Another part power of input hydrostatic transmissions device HST1 is transmitted (II shelves little gear 2212 → II shelves gear wheel 2214) → power output shaft 2205 by power input shaft II2201 → input gear II2206 → duplicate gear I2207 → duplicate gear II2208 → little gear I2209 → little gear II2210 → I shelves power transmission (I shelves little gear 2211 → I shelves gear wheel 2213) or the II shelves power of transfer motion power output shaft 122 → output motivation transfer motion part 22 of described hydrostatic drive portion 12, it is achieved two grades of power outputs.
Specific embodiment is to be more clearly understood that the present invention, it is not intended as a kind of restriction to right of the present invention, under the premise without departing from present inventive concept, it is possible to have various change, the apparent amendment of described those skilled in the art is intended to be included within the scope of the present invention by all these.
Claims (3)
1. a miniature farm machinery hydraulic drive variator, including hydrostatic transmissions device HST(1) and change speed gear box (2), it is characterized in that: described hydrostatic transmissions device HST(1) include power input pulley (11) and hydrostatic drive portion (12), described change speed gear box (2) includes walking motivation transfer motion part (21), output motivation transfer motion part (22) and lubrication portion (23), described power input pulley (11) is connected with hydrostatic drive portion (12), described hydrostatic transmissions device HST(1), clutch part (3), brake part (4) and hoofing part part (5) are corresponding with change speed gear box (2) respectively to be connected；Described hoofing part part (5) includes back-up ring (51), drives gear (52), bearing (53), bearing holder (housing, cover) (54), hoofing part semiaxis (55) and half shaft housing (56)；Described driving gear (52) and hoofing part semiaxis (55) spline engagement, positioned by described back-up ring (51), described hoofing part semiaxis (55) is arranged in described half shaft housing (56), supported by described bearing (53), described bearing (53) is arranged in described bearing holder (housing, cover) (54), and described half shaft housing (56) is connected with described change speed gear box (2) casing screws；Described walking motivation transfer motion part (21) includes power input shaft I(211), transition axis (212), main shaft (213), and input gear I(214), transition gear (215), little gear (216), intermediate drive gear (217) and shifting slide gear (218)；Described power input shaft I(211), the two ends of transition axis (212) and main shaft (213) support with bearing respectively, described input gear I(214) be described power input shaft I(211) on shaft gear, described transition gear (215) is the shaft gear on described transition axis (212), described little gear (216) is connected with described transition axis (212) spline, and described intermediate drive gear (217) is connected with described main shaft (213) spline simultaneously；Described input gear I(214) engage with described transition gear (215), described little gear (216) is engaged with described intermediate drive gear (217), described shifting slide gear (218) engages in side dental inlay with described intermediate drive gear (217), engage with the driving gear (52) of described hoofing part part (5), and described shifting slide gear (218) empty set is on described main shaft (213)；Described brake part (4) includes end cap (41), steel wire collar (42), tabletting (43), static friction sheet (44), movable friction plate (45) and bearing (46), described end cap (41) is provided with cylinder (411), bolt connecting hole (412) and dismounting screwed hole (413), and described cylinder (411) is offered three square grooves (4111) and a steel wire draw-in groove (4112)；Described tabletting (43), it is internal that static friction sheet (44) and movable friction plate (45) order are installed on described cylinder (411), wherein said tabletting (43) is only a piece of, described static friction sheet (44) and movable friction plate (45) have multi-disc, and it is spaced in groups, described tabletting (43) and static friction sheet (44) interior shape are circular hole, cylindrical is provided with three square journal stirrups, square journal stirrup is arranged in described square groove (4111), described movable friction plate (45) is internal is profile of tooth, profile is cylinder, engage with described shifting slide gear (218), described steel wire collar (42) is arranged in described steel wire draw-in groove (4112), described clutch (4) is arranged on described main shaft (213) two ends by described bearing (46), and be connected with described change speed gear box (2) casing screws by described bolt connecting hole (412), installing/dismounting screw in described dismounting screwed hole (413).
2. a kind of miniature farm machinery hydraulic drive variator described in claim 1, it is characterized in that: described output motivation transfer motion part (22) includes power input shaft II(2201), transition I axle (2202), transition II axle (2203), transition III axle (2204) and power output shaft (2205), and input gear II(2206), duplicate gear I(2207), duplicate gear II(2208), little gear I(2209), little gear II(2210), the little gear of I shelves (2211), the little gear of II shelves (2212), I shelves gear wheel (2213), II shelves gear wheel (2214), shift carriage (2215), selector fork (2216), abutment sleeve I(2217) and abutment sleeve II(2218)；Described power input shaft II(2201), transition I axle (2202), transition II axle (2203), transition III axle (2204) and power output shaft (2205) are respectively adopted bearing supporting, described input gear II(2206) be described power input shaft II(2201) on shaft gear, described duplicate gear I(2207) and duplicate gear II(2208) it is the shaft gear on described transition I axle (2202), described little gear I(2209) it is the shaft gear on described transition II axle (2203), described little gear II(2210), the little gear of I shelves (2211) and the little gear of II shelves (2212) are the shaft gears in transition III axle (2204), described shift carriage (2215) is connected with power output shaft (2205) spline, described I shelves gear wheel (2213) and II shelves gear wheel (2214) empty set are on described power output shaft (2205), and respectively with described abutment sleeve I(2217) and abutment sleeve II(2218) corresponding contact location；Described input gear II(2206) with described duplicate gear I(2207) engage, described duplicate gear II(2208) with described little gear I(2209) engage, described little gear I(2209) and described little gear II(2210) engagement, the little gear of described I shelves (2211) and I shelves gear wheel (2213), the little gear of described II shelves (2212) and II shelves gear wheel (2214) corresponding engagement respectively, described shift carriage (2215) engages with I shelves gear wheel (2213) or II shelves gear wheel (2214) dental inlay, described selector fork (2216) contacts with described shift carriage (2215)；Described hydrostatic drive portion (12) is connected with described change speed gear box (2) casing screws, the power input shaft I(211 of the hydraulic power output shaft (121) of described hydrostatic drive portion (12) and described walking motivation transfer motion part (21)) between be connected by spline, the transfer motion power output shaft (122) of described hydrostatic drive portion (12) and the power input shaft II(2201 of described output motivation transfer motion part (22)) spline connects.
3. a kind of miniature farm machinery hydraulic drive variator described in claim 2, it is characterised in that: described lubrication portion (23) includes disc (231), oil collection plate (232), oil-in (233), air bleeding valve (234), observes oilhole (235), oil mirror (236), drain oil (237) and purge cock (238)；Described disc (231) is arranged on described transition I axle (2202), described oil collection plate (232) is connected on described change speed gear box (2) outer casing inner wall, described oil collection plate (232) is provided with oil leaking hole, described oil-in (233) is arranged on above described change speed gear box (2) shell, described oil-in (233) is installed described air bleeding valve (234), described observation oilhole (235) is arranged on described change speed gear box (2) shell middle and upper part, described observation oilhole (235) is installed described oil mirror (236), described drain oil (237) is arranged on below described change speed gear box (2) shell, described drain oil (237) is installed described purge cock (238)；Described clutch part (3) include hydraulic cylinder (301), support (302), screw (303), compress sheet (304), oil sealing (305), bearing I (306), shift fork (307), throw-out collar (308), back-moving spring (309), back-up ring I(310), bearing I I(311) and back-up ring II(312)；Described hydraulic cylinder (301) is arranged on described change speed gear box (2) shell, described shift fork (307) is arranged on the shell of described change speed gear box (2) by described oil sealing (305) and bearing I (306), described support (302) is arranged on described shift fork (307) axle head by screw (303) and compression sheet (304), the work actuating station of described shift fork (307) contacts with described shifting slide gear (218), described throw-out collar (308) is installed in the outside of described shifting slide gear (218), internally installed described back-moving spring (309), described back-moving spring (309), back-up ring I(310), bearing I I(311) and back-up ring II(312) it is arranged on described main shaft (213) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610302384.1A CN105715759A (en) | 2016-05-09 | 2016-05-09 | Small hydraulic-transmission speed changer of agricultural machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610302384.1A CN105715759A (en) | 2016-05-09 | 2016-05-09 | Small hydraulic-transmission speed changer of agricultural machinery |
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| Publication Number | Publication Date |
|---|---|
| CN105715759A true CN105715759A (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610302384.1A Withdrawn CN105715759A (en) | 2016-05-09 | 2016-05-09 | Small hydraulic-transmission speed changer of agricultural machinery |
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| CN (1) | CN105715759A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594224A (en) * | 2017-02-15 | 2017-04-26 | 苏州萨伯工业设计有限公司 | Hydraulic-control proportional steering device |
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2016
- 2016-05-09 CN CN201610302384.1A patent/CN105715759A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594224A (en) * | 2017-02-15 | 2017-04-26 | 苏州萨伯工业设计有限公司 | Hydraulic-control proportional steering device |
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Application publication date: 20160629 |