CN201241945Y - Speed variator for small-sized engineering machinery - Google Patents
Speed variator for small-sized engineering machinery Download PDFInfo
- Publication number
- CN201241945Y CN201241945Y CNU2008200218073U CN200820021807U CN201241945Y CN 201241945 Y CN201241945 Y CN 201241945Y CN U2008200218073 U CNU2008200218073 U CN U2008200218073U CN 200820021807 U CN200820021807 U CN 200820021807U CN 201241945 Y CN201241945 Y CN 201241945Y
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- gear
- assembly
- engineering machinery
- speed
- speed changer
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Abstract
The utility model relates to a speed changer for a small-sized engineering machinery, which comprises a casing, a change-over valve assembly, a hydraulic-shifting clutch assembly, a gear pump assembly and a fluid torque-converter assembly, wherein the change-over valve assembly is arranged on one end of the casing, and the hydraulic-shifting clutch assembly is arranged on the inner side of the change-over valve assembly in the casing. The gear pump assembly is arranged on the outer side of the casing, and the hydraulic-shifting clutch assembly is further arranged on the outer side of the gear pump assembly. The fluid torque-converter which can achieve stepless speed change by the utility model can achieve stepless speed regulating of vehicles, a hydraulic clutch shifting mode is used to replace a mechanical shifting, a high-low-level conversing device is used to lead the speed changer to have two forward shifts and two backward shifts, which satisfies the requirement of shoveling-transmitting operation and road running of engineering machinery. The speed changer for a small-sized engineering machinery has simple integral structure and convenient operation and use, the forward shifts and the backward shifts are respectively divided into a high speed and a low speed, and the speed changer is handy in on-situ operation and revolving fields, which is freely controlled, has low production cost, and is easily popularized and modified in a matching way.
Description
Technical field:
The utility model relates to the engineering machinery transmission device, relates in particular to the small engineering machinery speed changer.
Background technique:
At present, loading mass is small sized loader and the minibul below 100 horsepowers below 1.5 tons, and its speed changer mostly is mechanical transmission, and mechanical transmission gearshift mode is the shift fork gearshift, each force transfer element of speed changer is a rigid of transmission power as mode of transfer force such as gears.Use the engineering machinery of mechanical transmission that many shortcomings are arranged: if require the speed of a motor vehicle of vehicle fast, then the tractive force of vehicle is little, if require the tractive force of vehicle big, then the speed of a motor vehicle is low; In order to make transmission system adapt to the vehicle operation requirement as far as possible, need to increase the gear of speed changer, the driver needs shift hunting during work, and the gearshift mode is the mechanical type gearshift, needs first stepping on clutch to cut off engine power during gearshift, just can shift gears, waste time and energy operation inconvenience.Mechanical type manual transmission rate of fault height can not be realized stepless change simultaneously.Comprehensive above-mentioned reason, small engineering machinery uses the mechanical type manual transmission at present, is not suitable for the construction operating mode of engineering machinery.
The model utility content:
The purpose of this utility model is, overcome the deficiencies in the prior art part, a kind of small engineering machinery speed changer is provided, this be a kind of in speed changer, use can realize infinite variable speed fluid torque converter, can realize vehicle stepless speed regulation, used hydraulic coupling gearshift mode, replace the mechanical type gearshift, use the high to low gear conversion equipment, made speed changer have two forward gears and two and retreat retaining, satisfied the needs that engineering machinery shovel running industry and road are walked.
Small engineering machinery speed changer described in the utility model, include housing, reversing valve complement, hydraulic pressure shift clutch assembly, the gear pump assembly, assembly of hydraulic torque converter, reverse shaft, I level reduction gear axle, II level reduction gear axle, back output flange, the top gear gearwheel, high to low gear conversion shift fork, high to low gear conversion tooth cover, output shaft, bottom gear gearwheel and preceding output flange are formed, housing is the utility model body supports part, be provided with reversing valve complement at housing one end, in reversing valve complement, in the side body, be provided with hydraulic pressure shift clutch assembly.Corresponding with hydraulic pressure shift clutch assembly, in the outside of housing, be provided with the gear pump assembly, be provided with assembly of hydraulic torque converter again in the outside of gear pump assembly.Being connected between assembly of hydraulic torque converter and the hydraulic pressure shift clutch, can directly insert in the hydraulic pressure shift clutch by the turbine shaft at assembly of hydraulic torque converter center and connect, also can connect indirectly by the form of output flange.The other end is provided with output shaft in the housing, and an end of said output shaft is provided with the back output flange, and the other end of output shaft is provided with preceding output flange.Output shaft is provided with high to low gear conversion tooth cover between two parties, and said high to low gear conversion tooth cover is provided with high to low gear conversion shift fork.Overlap on the output shaft of a side at said high to low gear conversion tooth, be provided with the top gear gearwheel, on the output shaft of high to low gear conversion tooth cover opposite side, be provided with the bottom gear gearwheel.Specifically, be on the output shaft of back output flange one end, be provided with the top gear gearwheel; On the output shaft of preceding output flange one end, be provided with the bottom gear gearwheel.On reverse shaft, I level reduction gear axle and II level reduction gear axle, be provided with the gear of two power output usefulness separately, make that small engineering machinery described in the utility model forms two forward gears of low speed of a high speed with speed changer and two of low speed of a high speed retreat retaining.
The working medium of fluid torque converter is a fluid, it is hydraulic transmission oil, generally by pump impeller, turbine, elements such as guide wheel and cover wheel are formed, characteristics are that its mode of transfer force is a transformation of energy, concerning fluid torque converter, it is that fluid is at pump impeller, turbine, flow in the active chamber that guide wheel is formed, motor passes through joining plate, cover wheel and pump impeller rigid joint, rotate with engine flywheel, fluid in the pump impeller is flowed through, and energy increases behind the pump impeller, the mechanical energy of pump impeller is converted into the kinetic energy of fluid, the fluid that comes out from pump impeller is impulse turbine again, promotes the rotation of turbine, and the mechanical energy that the kinetic energy of fluid is converted into turbine is outwards exported, the turbine rotation drives the rotation of speed changer internal gear, finally is converted into the kinetic force of vehicle to run.Because guide wheel maintains static, during the fluid impact guide wheel, guide wheel gives turbine with reaction force, plays the effect of bending moment, speed change.Because the working medium of torque-converters is a fluid, its mode of transfer force is different with the mechanical type transmission, it is flexible transferring power, and the mechanical type power transmission is a rigid of transmission power, thus can be at input speed, or perhaps under the constant situation of engine speed, its output speed can be different with the variation of external load, when external load is big, then export high pulling torque, the slow-speed of revolution, otherwise when the little and rotating speed height of external load hour output torque.So being housed, the vehicle of fluid torque converter has automatic speed changing function.
Characteristics of the present utility model are, used assembly of hydraulic torque converter in the speed changer, fluid torque converter and motor are installed together, rotate with motor, the turbine of torque-converters is linked together by turbine shaft and clutch assembly, and secondary speed and output torque can adapt to automatically with outer load variations, and the effect of torque-converters is the stepless change that realizes vehicle, play the effect of bending moment, speed change, realize the stepless change of vehicle.
Specifically, small engineering machinery speed changer described in the utility model, be in speed changer, to have used the hydraulic coupling assembly, the hydraulic coupling assembly is by clutch shaft, friction plate, backing plate, the left end piston, the right-hand member piston, the forward gear gear, retreat part compositions such as retaining gear, the hydraulic coupling assembly can be under the effect of selector valve, the combination of solenoidoperated cluthes left end friction plate or right-hand member friction plate, realize retreating or advancing of vehicle, when hydraulicdirectional control valve forwards progressive position to, hydraulic oil enters the clutch right-hand member, the right-hand member piston moves right, thereby compress right-hand member steel disc and right-hand member friction plate, this moment, the forward gear gear rotated with clutch shaft, the forward gear gear drives I level reduction gear again, II level reduction gear, duplicate gear, the top gear gearwheel, the bottom gear gearwheel, output shaft, preceding output flange, parts such as back output flange rotate together, and this moment, vehicle was in forward travel state; When reversing valve complement forwards to when retreating gear and putting, hydraulic oil enters the clutch left end, the left end piston is moved to the left, thereby compress left end steel disc and left end friction plate, the counter gear that reverses gear rotates with clutch shaft, the counter gear that reverses gear drives parts such as retreating retaining gear, I level reduction gear, II level reduction gear, duplicate gear, top gear gearwheel, bottom gear gearwheel, output shaft, preceding output flange and back output flange and rotates together, and this moment, vehicle was in fallback state.
Because small engineering machinery described in the utility model has used the high to low gear conversion equipment with speed changer, enlarged the using scope of vehicle, the high to low gear conversion equipment comprises high to low gear conversion tooth cover and high to low gear conversion shift fork, when high to low gear gearshift conversion shift fork is changed high to low gear the tooth cover and is pushed left end, bottom gear gearwheel and output shaft, preceding output flange, back output flange rotates together, this moment, outwards the moment of output was big and rotating speed is low, vehicle is in low-speed forward state or ease astern state, specifically be selector valve to forward the forward gear position to be the low-speed forward state, selector valve forwards to and retreats that gear puts is the ease astern state; When high to low gear conversion shift fork is changed high to low gear the tooth cover and is pushed right-hand member, top gear gearwheel and output shaft, preceding output flange, back output flange rotate together, this moment is the little and rotating speed height of the moment of output outwards, and vehicle is in the state of advancing at utmost speed or high speed fallback state; Specifically be selector valve to forward the forward gear position to be the state of advancing at utmost speed, selector valve forwards to and retreats that gear puts is the high speed fallback state.Like this, small engineering machinery described in the utility model just makes small engineering machinery have two forward gears and two with speed changer and retreats retaining.
Small engineering machinery described in the utility model has adopted built-in gear pump assembly with speed changer, the pump impeller of assembly of hydraulic torque converter inserts in the oil feed pump of gear pump assembly, drive fluid torque converter by motor, fluid torque converter driven gear oil feed pump work is for assembly of hydraulic torque converter and reversing valve complement provide pressure oil.
Small engineering machinery speed changer described in the utility model, overall structure is simple, operation and easy to use, forward gear and retreat retaining and divide to make two speed of height, no matter be field operation or transition, can both be handy, control freely.Especially the utility model cost is low, is easy to promote and supporting transformation.
Description of drawings:
Accompanying drawing is the structural representation of small engineering machinery described in the utility model with speed changer.1-housing, 2-reversing valve complement, 3-hydraulic pressure shift clutch assembly, 4-gear pump assembly, 5-assembly of hydraulic torque converter, 6-reverse shaft, 7-I level reduction gear axle, 8-II level reduction gear axle 9-back output flange 10-top gear gearwheel 11-high to low gear conversion shift fork 12-high to low gear conversion tooth cover 13-output shaft 14-bottom gear gearwheel 15-preceding output flange
Embodiment:
Referring now to accompanying drawing 1, be described as follows in conjunction with the embodiments: small engineering machinery speed changer described in the utility model, include housing 1, reversing valve complement 2, hydraulic pressure shift clutch assembly 3, gear pump assembly 4, assembly of hydraulic torque converter 5, reverse shaft 6, I level reduction gear axle 7, II level reduction gear axle 8, back output flange 9, top gear gearwheel 10, high to low gear conversion shift fork 11, high to low gear conversion tooth cover 12, output shaft 13, bottom gear gearwheel 14 and preceding output flange 15 are formed, housing 1 is a body supports part of the present utility model, be provided with reversing valve complement 2 at housing 1 one ends, in reversing valve complement 2, in the side body 1, be provided with hydraulic pressure shift clutch assembly 3.Corresponding with hydraulic pressure shift clutch assembly 3, in the outside of housing 1, be provided with gear pump assembly 4, be provided with assembly of hydraulic torque converter 5 again in the outside of gear pump assembly 4.Being connected between assembly of hydraulic torque converter 5 and the hydraulic pressure shift clutch 3, can directly insert by the turbine shaft at assembly of hydraulic torque converter 5 centers in the hydraulic pressure shift clutch 3 and connect, also can connect indirectly by the form of output flange.The other end is provided with output shaft 13 in the housing 1, and an end of said output shaft 13 is provided with back output flange 9, and the other end of output shaft 13 is provided with preceding output flange 15.Output shaft 13 is provided with high to low gear conversion tooth cover 12 between two parties, and said high to low gear conversion tooth cover 12 is provided with high to low gear conversion shift fork 11.Overlap on the output shaft 13 of 12 1 sides at said high to low gear conversion tooth, be provided with top gear gearwheel 10, overlap on the output shaft 13 of 12 opposite sides, be provided with bottom gear gearwheel 14 at high to low gear conversion tooth.Specifically, be on the output shaft 13 of back output flange 9 one ends, be provided with top gear gearwheel 10; On the output shaft 13 of preceding output flange 15 1 ends, be provided with bottom gear gearwheel 14.On reverse shaft 6, I level reduction gear axle 7 and II level reduction gear axle 8, be provided with the gear of two power output usefulness separately, make that small engineering machinery described in the utility model forms two forward gears of low speed of a high speed with speed changer and two of low speed of a high speed retreat retaining.The working medium of fluid torque converter is a fluid, it is hydraulic transmission oil, generally by pump impeller, turbine, elements such as guide wheel and cover wheel are formed, characteristics are that its mode of transfer force is a transformation of energy, concerning fluid torque converter, it is that fluid is at pump impeller, turbine, flow in the active chamber that guide wheel is formed, motor passes through joining plate, cover wheel and pump impeller rigid joint, rotate with engine flywheel, fluid in the pump impeller is flowed through, and energy increases behind the pump impeller, the mechanical energy of pump impeller is converted into the kinetic energy of fluid, the fluid that comes out from pump impeller is impulse turbine again, promotes the rotation of turbine, and the mechanical energy that the kinetic energy of fluid is converted into turbine is outwards exported, the turbine rotation drives the rotation of speed changer internal gear, finally is converted into the kinetic force of vehicle to run.Because guide wheel maintains static, during the fluid impact guide wheel, guide wheel gives turbine with reaction force, plays the effect of bending moment, speed change.Because the working medium of torque-converters is a fluid, its mode of transfer force is different with the mechanical type transmission, it is flexible transferring power, and the mechanical type power transmission is a rigid of transmission power, thus can be at input speed, or perhaps under the constant situation of engine speed, its output speed can be different with the variation of external load, when external load is big, then export high pulling torque, the slow-speed of revolution, otherwise when the little and rotating speed height of external load hour output torque.So being housed, the vehicle of fluid torque converter has the self-shifting function.Characteristics of the present utility model are, used assembly of hydraulic torque converter 5 in the speed changer, fluid torque converter and motor are installed together, rotate with motor, the turbine of torque-converters is linked together by turbine shaft and hydraulic pressure shift clutch assembly, and secondary speed and output torque can adapt to automatically with outer load variations, and the effect of torque-converters is the stepless change that realizes vehicle, play the effect of bending moment, speed change, realize the stepless change of vehicle.Specifically, small engineering machinery speed changer described in the utility model, be in speed changer, to have used the hydraulic coupling assembly, the hydraulic coupling assembly is by clutch shaft, friction plate, backing plate, the left end piston, the right-hand member piston, the forward gear gear, retreat part compositions such as retaining gear, the hydraulic coupling assembly can be under the effect of selector valve, the combination of solenoidoperated cluthes left end friction plate or right-hand member friction plate, realize retreating or advancing of vehicle, when hydraulicdirectional control valve forwards progressive position to, hydraulic oil enters the clutch right-hand member, the right-hand member piston moves right, thereby compress right-hand member steel disc and right-hand member friction plate, this moment, the forward gear gear rotated with clutch shaft, the forward gear gear drives I level reduction gear again, II level reduction gear, duplicate gear, top gear gearwheel 10, bottom gear gearwheel 14, output shaft 13, preceding output flange 15 and back output flange 9 parts such as grade rotate together, and this moment, vehicle was in forward travel state; When reversing valve complement 2 forwards to when retreating gear and putting, hydraulic oil enters the clutch left end, the left end piston is moved to the left, thereby compress left end steel disc and left end friction plate, the counter gear that reverses gear rotates with clutch shaft, the counter gear that reverses gear drives parts such as retreating retaining gear, I level reduction gear, II level reduction gear, duplicate gear, top gear gearwheel 10, bottom gear gearwheel 14, output shaft 13, preceding output flange 15 and back output flange 9 and rotates together, and this moment, vehicle was in fallback state.Because small engineering machinery described in the utility model has used the high to low gear conversion equipment with speed changer, enlarged the using scope of vehicle, the high to low gear conversion equipment comprises high to low gear conversion tooth cover 12 and high to low gear conversion shift fork 11, when high to low gear conversion shift fork 11 is changed high to low gear tooth cover 12 and is pushed left end, bottom gear gearwheel 14 and output shaft 13, preceding output flange 15, back output flange 9 rotates together, this moment, outwards the moment of output was big and rotating speed is low, vehicle is in low-speed forward state or ease astern state, specifically be selector valve to forward the forward gear position to be the low-speed forward state, selector valve forwards to and retreats that gear puts is the ease astern state; When high to low gear conversion shift fork is changed high to low gear the tooth cover and is pushed right-hand member, top gear gearwheel 10 and output shaft 13, preceding output flange 15, back output flange 9 rotate together, this moment is the little and rotating speed height of the moment of output outwards, and vehicle is in the state of advancing at utmost speed or high speed fallback state; Specifically be selector valve to forward the forward gear position to be the state of advancing at utmost speed, selector valve forwards to and retreats that gear puts is the high speed fallback state.Like this, small engineering machinery described in the utility model just makes small engineering machinery have two forward gears and two with speed changer and retreats retaining.The utility model speed changer has had the high gear of advancing, the low gear of advancing, and retreats high gear, retreats low gear totally 4 gears.Small engineering machinery speed changer described in the utility model, overall structure is simple, operation and easy to use, forward gear and retreat retaining and divide to make two speed of height, no matter be field operation or transition, can both be handy, control freely.Especially the utility model cost is low, is easy to promote and supporting transformation.
Claims (5)
1, the small engineering machinery speed changer, include housing (1), reversing valve complement (2), hydraulic pressure shift clutch assembly (3), gear pump assembly (4), assembly of hydraulic torque converter (5), reverse shaft (6), I level reduction gear axle (7), II level reduction gear axle (8), back output flange (9), top gear gearwheel (10), high to low gear conversion shift fork (11), high to low gear conversion tooth cover (12), output shaft (13), bottom gear gearwheel (14) and preceding output flange (15) are formed, housing (1) is a body supports part of the present utility model, it is characterized in that being provided with reversing valve complement (2) at housing (1) one end, in reversing valve complement (2) in the side body (1), be provided with hydraulic pressure shift clutch assembly (3), corresponding with hydraulic pressure shift clutch assembly (3), the outside in housing (1), be provided with gear pump assembly (4), be provided with assembly of hydraulic torque converter (5) again in the outside of gear pump assembly (4).
2, small engineering machinery speed changer according to claim 1, it is characterized in that the interior the other end of housing (1) is provided with output shaft (13), one end of said output shaft (13) is provided with back output flange (9), and the other end of output shaft (13) is provided with preceding output flange (15).
3, small engineering machinery speed changer according to claim 1 is characterized in that output shaft (13) is provided with high to low gear conversion tooth cover (12) between two parties, and said high to low gear conversion tooth cover (12) is provided with high to low gear conversion shift fork (11).
4, small engineering machinery speed changer according to claim 1, it is characterized in that on the output shaft (13) of said high to low gear conversion tooth cover (12) one sides, be provided with top gear gearwheel (10), on the output shaft (13) of high to low gear conversion tooth cover (12) opposite side, be provided with bottom gear gearwheel (14).
5, small engineering machinery speed changer according to claim 1 is characterized in that on reverse shaft (6), I level reduction gear axle (7) and II level reduction gear axle (8), is provided with the gear of two power output usefulness separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200218073U CN201241945Y (en) | 2008-05-01 | 2008-05-01 | Speed variator for small-sized engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200218073U CN201241945Y (en) | 2008-05-01 | 2008-05-01 | Speed variator for small-sized engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201241945Y true CN201241945Y (en) | 2009-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200218073U Expired - Fee Related CN201241945Y (en) | 2008-05-01 | 2008-05-01 | Speed variator for small-sized engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201241945Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537329A (en) * | 2012-02-06 | 2012-07-04 | 三一重工股份有限公司 | Power gear shift speed change bridge and engineering machinery |
| CN104421425A (en) * | 2013-09-04 | 2015-03-18 | Jc班福德挖掘机有限公司 | Transmission device |
| CN105134891A (en) * | 2015-08-20 | 2015-12-09 | 青州弥河金利特机械有限公司 | Small loader gearbox with new structure |
| CN110370926A (en) * | 2018-04-14 | 2019-10-25 | 京山三雷重工股份有限公司 | Tractor load type infinitely variable transmission |
| CN114278713A (en) * | 2021-12-22 | 2022-04-05 | 采埃孚合力传动技术(合肥)有限公司 | Hydraulic transmission case of small-tonnage forklift |
-
2008
- 2008-05-01 CN CNU2008200218073U patent/CN201241945Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537329A (en) * | 2012-02-06 | 2012-07-04 | 三一重工股份有限公司 | Power gear shift speed change bridge and engineering machinery |
| CN104421425A (en) * | 2013-09-04 | 2015-03-18 | Jc班福德挖掘机有限公司 | Transmission device |
| CN105134891A (en) * | 2015-08-20 | 2015-12-09 | 青州弥河金利特机械有限公司 | Small loader gearbox with new structure |
| CN110370926A (en) * | 2018-04-14 | 2019-10-25 | 京山三雷重工股份有限公司 | Tractor load type infinitely variable transmission |
| CN110370926B (en) * | 2018-04-14 | 2024-03-29 | 京山三雷重工股份有限公司 | Tractor load type stepless speed changing box |
| CN114278713A (en) * | 2021-12-22 | 2022-04-05 | 采埃孚合力传动技术(合肥)有限公司 | Hydraulic transmission case of small-tonnage forklift |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 Termination date: 20100501 |