CN2169735Y - Planet hydraulic controlled stepeless speed changer - Google Patents
Planet hydraulic controlled stepeless speed changer Download PDFInfo
- Publication number
- CN2169735Y CN2169735Y CN 93221540 CN93221540U CN2169735Y CN 2169735 Y CN2169735 Y CN 2169735Y CN 93221540 CN93221540 CN 93221540 CN 93221540 U CN93221540 U CN 93221540U CN 2169735 Y CN2169735 Y CN 2169735Y
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- CN
- China
- Prior art keywords
- hydraulic control
- utility
- model
- oil pump
- hydraulic
- 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.)
- Expired - Fee Related
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- Structure Of Transmissions (AREA)
Abstract
The utility model relates to a planet hydraulic controlled stepless speed changer which is composed of a planetary gear train and a hydraulic controlled loop. The planetary gear train can be used to drive a quantitative oil pump to work and stepless speed regulation can be realized through the flow quantity and pressure of hydraulic oil in the regulating hydraulic controlled loop. The utility model has the advantages of simple structure, compact structure and easy speed regulation, and because a pressure reducing spill valve and an energy accumulator are connected in the hydraulic controlled loop, the utility model is not influenced by the variation of load with stable transmission and has the function of overload protection, and the utility model can be used for the dynamic force transmission of light and heavy industries such as transportation, hoisting, machine tools, metallurgy, mines, light spinning, etc.
Description
The utility model relates to a kind of speed change gear, particularly a kind of planetary differential hyraulic controlled type stepless speed changes devices.
Normally used drive transmission device kind is a lot of in the machinery, and the planetary differential hydraulic control speed changing is for wherein a kind of.Utility model patent communique 8 volumes once disclosed a kind of notification number No. 44 and are: the CN2120222 name is called the patent application of " differential planet gear stepless speed variator ", by sun gear, planet carrier and gear ring are formed planetary gear train, the employing three phase alternating current motor is prime mover, it is characterized in that one of three elements link to each other with overdrive gear in the planetary gear train, by Brake drum or Hydraulic Adjustable Speed pump overdrive gear is applied certain resisting moment and regulate its rotating speed, realization is to the stepless speed regulation of pto, when Brake drum applies resisting moment and carries out speed governing overdrive gear, because it is bigger to apply active force, so Brake drum easily skids, wearing and tearing, make working life shorter, when overdrive gear being applied resisting moment and carries out speed governing by the Hydraulic Adjustable Speed pump, its less stable, and when load changes, its rotating speed also will be along with change, makes the output speed instability.
It is a kind of simple in structure that the purpose of this utility model is to provide, and speed governing is convenient, not influenced by load variations, and transmission is stable, and prime mover range of choice is big, has the planet hyraulic controlled type stepless speed changes devices of overload protection function.
For achieving the above object, the utility model is made of planetary differential train and hydraulic control loop, sun gear in the planetary differential train, planet carrier, gear ring can be respectively as the power input component, power output member and hydraulic control part, and the gear in hydraulic control part and the hydraulic control loop on the quantitative oil pump pump shaft is meshed, quantitative oil pump can drive its work by the planetary differential train by prime mover, the hydraulic control loop is mainly by quantitative oil pump, the throttle valve that oily output tube is connected between fuel tank and quantitative oil pump and the fuel tank, a relief valve reduces pressure, accumulator constitutes, regulate throttle valve in the hydraulic control loop, can limit the flow and the pressure of hydraulic oil in the hydraulic control loop, make quantitative oil pump have different resisting moment and rotating speed to the hydraulic control part in the planetary gear train, when the rotating speed of hydraulic control part and moment change, the rotating speed of its output member and moment also will change, and reach the purpose of stepless speed regulation.
In conjunction with the accompanying drawings the utility model is elaborated below by embodiment.
Fig. 1 is the utility model transmission schematic representation.
Fig. 2 is the utility model structural representation.
In the utility model planetary gear train, sun gear (2) is a driving link, gear ring (6) is the hydraulic control part, planet carrier (11) is an output member, the sun gear (2) that input shaft (1) one end connects is meshed with planet wheel (5), planet wheel (5) is installed on the planet carrier (11) by bearing (4) and bearing pin (3), planet wheel (5) also is meshed with the internal tooth that has interior external tooth and be fixed on the gear ring (6) on the gear ring frame (7) simultaneously, gear ring frame (7) is bearing on the planet carrier (11) by bearing (8), and planet carrier (11) is fixedly connected on the output shaft (10) with key (9).In the hydraulic control circuit, quantitative oil pump (15) is fixed on the frame (14), be connected with a gear (12) and gear (12) on the pump shaft (13) of quantitative oil pump (15) and be meshed, be connected with throttle valve (20), decompression one relief valve (19), accumulator (18) between quantitative oil pump (15) and fuel tank (16) on the oily output tube (17) with the external tooth of gear ring (6).
During work, output shaft (10) is connected with working machine, prime mover drives and passes through planet carrier (11) drive output shaft (10) rotation in the planetary differential train when input shaft (1) rotates, gear ring (6) is by driving quantitative oil pump work with its meshed gears (12), and quantitative oil pump (15) will be exported hydraulic oil.During speed governing, can be by the adjusting spiral shell handle (21) of throttle valve, the size of adjusting the throttle valve restriction changes the flow and the pressure of hydraulic oil in the quantitative oil pump, the rotating speed and the moment of torsion of quantitative oil pump (15) are changed, by pump shaft cog (12) ring gear torque and rotating speed with its engagement are changed, to realize changing the purpose of output speed.When gear ring (6) is that the suffered work moment of suffered resisting moment of hydraulic control part and output member is when balancing each other, then output speed is a certain value, the resisting moment that is subjected to when the hydraulic control part is during greater than the suffered work moment of output member, output speed increases, otherwise, output speed reduces, and thus, can reach infinite variable speed purpose; When the restriction maximum, hydraulic pressure is zero, and the suffered resisting moment of hydraulic control part this moment is zero, and the output shaft rotating speed also is zero.The restriction minimum, the hydraulic pressure maximum, the suffered resisting moment maximum of hydraulic control part, output speed also is maximum.
When the rotating speed and the moment of torsion of outer load changes; corresponding change takes place in the rotating speed that will cause each element of transmission system; decompression-relief valve will be adjusted flow and pressure automatically; the influence that makes the output member rotating speed not changed by above-mentioned situation; play the effect of stablizing output speed, when outer load increases, when making hydraulic fluid pressure in the hydraulic control loop reach decompression-relief valve setting; overload protective function is played in the relief valve unloading.Accumulator is used to cushion and absorb the pulsation that metering pump produces, with the stable system rotating speed.
The utility model is owing to can drive quantitative oil pump work by planetary gear train; and flow and pressure realization stepless speed regulation by adjusting hydraulic oil in the hydraulic control loop; so; not only simple in structure; compact; and speed governing is easy; again owing to be connected with decompression-relief valve and accumulator in the hydraulic control loop; so; this speed change gear is not influenced by load variations; transmission is stable, and has overload protection function, can be widely used in transporting, lifting, lathe, metallurgy, mine, light textile etc. are light, in the power transmission of heavy industry.
Claims (1)
1, a kind of planet hyraulic controlled type stepless speed changes devices, constitute by planetary differential train and hydraulic control loop, sun gear in the planetary differential train (2), planet carrier (11), gear ring (6) can be respectively as the power input component, power output member and hydraulic control part, it is characterized in that, gear (12) in hydraulic control part and the hydraulic control loop on quantitative oil pump (15) pump shaft is meshed, drive quantitative oil pump work by prime mover by the planetary differential train, in the hydraulic control loop, be connected with throttle valve (20) in the oily output loop between quantitative oil pump (15) and the fuel tank (16), a relief valve (19) reduces pressure, accumulator (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93221540 CN2169735Y (en) | 1993-08-10 | 1993-08-10 | Planet hydraulic controlled stepeless speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93221540 CN2169735Y (en) | 1993-08-10 | 1993-08-10 | Planet hydraulic controlled stepeless speed changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2169735Y true CN2169735Y (en) | 1994-06-22 |
Family
ID=33800360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93221540 Expired - Fee Related CN2169735Y (en) | 1993-08-10 | 1993-08-10 | Planet hydraulic controlled stepeless speed changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2169735Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060258C (en) * | 1995-11-28 | 2001-01-03 | 杨春龄 | Shaft coupling type stepless speed and moment changer |
| WO2009015559A1 (en) * | 2007-07-31 | 2009-02-05 | Shizhang Liu | Hydraulic synchronizer |
| CN102943644A (en) * | 2012-11-19 | 2013-02-27 | 无锡市京锡冶金液压机电有限公司 | Hydraulic anti-sticking method of rock drill propulsion loop |
| CN104019217A (en) * | 2014-05-26 | 2014-09-03 | 钟叶兴 | Hydraulic planetary gear speed changing device and control method thereof |
| CN104912151A (en) * | 2015-06-23 | 2015-09-16 | 陈光星 | Hydraulic-drive type automatic speed changing control device of excavator |
| CN110762188A (en) * | 2019-11-22 | 2020-02-07 | 南京高速齿轮制造有限公司 | Planet-level mechanical pump structure and wind power gear box |
-
1993
- 1993-08-10 CN CN 93221540 patent/CN2169735Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060258C (en) * | 1995-11-28 | 2001-01-03 | 杨春龄 | Shaft coupling type stepless speed and moment changer |
| WO2009015559A1 (en) * | 2007-07-31 | 2009-02-05 | Shizhang Liu | Hydraulic synchronizer |
| CN102943644A (en) * | 2012-11-19 | 2013-02-27 | 无锡市京锡冶金液压机电有限公司 | Hydraulic anti-sticking method of rock drill propulsion loop |
| CN104019217A (en) * | 2014-05-26 | 2014-09-03 | 钟叶兴 | Hydraulic planetary gear speed changing device and control method thereof |
| CN104912151A (en) * | 2015-06-23 | 2015-09-16 | 陈光星 | Hydraulic-drive type automatic speed changing control device of excavator |
| CN110762188A (en) * | 2019-11-22 | 2020-02-07 | 南京高速齿轮制造有限公司 | Planet-level mechanical pump structure and wind power gear box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |