• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a hydraulic drive and makes it possible to increase the accuracy of adjusting the gear ratio. For this, the adjusting element is made in the form of a core 25 of the electromagnet 26 with throttling edges KFOR). The DCs with the valve element (EC) 21 form a variable volume cavity 24 in which a screw spring 23 is placed. The cavity 24 is in communication with the discharge and discharge lines through variable chokes formed by the DCs. An axial flow channel 27 can be made in the bark 25, which communicates the cavity 24 and the chamber 28 is controlled. The position of the CE 21 depends on the degree of excitation of the electromagnet 26. The CE 21 can be equipped with a rod that interacts via a flat spring through the bark 25. The anchor 25 in turn interacts with a nozzle, the opening of which depends on the degree of excitation of the electromagnet 26. The equilibrium position of the CE 21 depends in this case, from the pressure of the fluid in the control chamber, determined by the value of the opening of the nozzle, 1 s. f-ly, 4 ill. about
    公开号:SU1355136A3
    申请号:SU823499764
    申请日:1982-10-04
    公开日:1987-11-23
    发明作者:Петрус Мария Каде Теодорус
    申请人:Ван Дорн Трансмисси Б.В. (Фирма)；
    IPC主号:
    专利说明:

    one
    The invention relates to engineering hydraulics, in particular to devices for adjusting the transmission ratio of the V-belt transmission with infinitely variable speeds.
    The purpose of the invention is to improve the accuracy of regulation.
    Figure 1 shows the proposed device (control chamber, control valve communicates via a choke with a drain line); figure 2 is the same, in the cortex of the electromagnet is made of an axial flow channel; in FIG. 3, the same, the cavity of a variable volume is communicated via a choke with a pressure line; 4 is the same, the valve element is provided with a rod. The device for adjusting the transmission ratio comprises a primary (input) shaft 1 carrying a fixed 2 and a movable 3 cones forming the primary pulley. Cavity 4 ob10
    13551362
    31 through the throttle 32, the cavity 33 is in communication with the hydroline 34 with the chamber 28. The rod 35 (FIG. 4) abuts the flat spring 36. The anchor 25 can be turned relative to the point 37, and the hydroline 34 is communicated through the throttle 38c with the hydroline 31 and directly with the nozzle 39. The valve 40 has a valve element 41 installed with the formation of two cavities 42 and 43. The valve 4P is in fluid lines 44 and 45 with hydraulic lines 13 and 17, respectively. A spring 46 is installed in the cavity 42. The variable chokes of the core 25 are formed by the throttling edges 47.
    The gear ratio control device operates as follows.
    At a certain degree of excitation of the electrmagnet 26, measles 25 (Fig. 1) takes such a position that the resultant to the left (according to the drawing)
    developed in the cylinder 5 by a movable con-25 steering force generated by pressure
    Som 3. Fluid is supplied to cavity 4 by hydroline 6. On the secondary (output) shaft 7 there is a stationary 8 and a movable 9 cones forming the secondary pulley. The cone 9 is integral with the cylinder 10, in which the piston 11 is fixed, fixedly attached to the secondary shaft 7 and entering the cavity 12 of the cylinder 10. The liquid is supplied to the cavity 12 of the cylinder 10 by means of a hydroline 13.
    The transmission includes a driving belt 14, a pump 15, a reservoir 16 connected by hydroline 17 to a pump 15. Hydrolini 13 is in communication with a discharge line 18. A filter 19 is installed in the hydroline 17. The transmission ratio is adjusted by means of an adjusting valve 20 with a valve element 21 with helical springs 22 and 23. A screw spring 23 is installed in a variable volume cavity 24 formed by element 21 and the electromagnet 26. The core 25 has an axial flow channel 27 which communicates the cavity 24 and the control chamber 28. The latter can be communicated through the throttle 29 with the hydroline 30. With a slight movement of the core 25, the fluid coming from the hydroline 31 into the chamber 28 is throttled. The cavity 24 can be communicated with the hydroline
    40
    the fluid in chamber 28 and cavity 33 is equal to the silt generated by electromagnet 26 acting to the right on measles 25. As the degree of excitation Q increases, measles 25 moves slightly to the right, as a result of which the flow from hydraulic line 31 increases and therefore the pressure in chamber 28 increases cavity 33. As a result, the resultant left-acting force increases, causing the spring 23 to compress and move the valve element 21 to the left, thereby changing the balance of the element 21.
    Thus, the exciter electromagnet 26 interferes with the position of the valve member 21 and may cause a certain amount of fluid to be supplied to the drive cavity 4 of the cylinder 5.
    The anchor 25 may be provided with a new channel 27 (Fig. 2), with the result that the cavity 24 and the chamber 28 communicate with each other, and at any degree of excitation of the electromagnet 26, the valve element 21 takes such a position that the force of the spring 22 is balanced by the force of the spring 23 and to the valve element 21 by the force created by the pressure of the fluid in the cavity 24. With a higher degree of excitation of the electromagnet 26, the measles 25 move slightly to the right, which causes
    45
    55
    3
    the pressure drop in the cavity 24. As a result, the valve element 21 moves to the left, the compression of the helical spring 23 increases, and the force with which the electromagnet 26 acts on the measles 25 is balanced by the force of the spring 23, i.e. An increase in the degree of excitation of the electromagnet 26 causes the valve element 21 to move to the left.
    Anchor 25 (FIG. 3) can provide adjustable throttling of not only the fluid supplied through
    HYDROLINE 30, but also liquid, OUTPUT-
    through the hydroline 3.1.
    Valve element 21 (FIG. 4) may be provided with a rod 35, the end of which abuts against a flat spring 36, which deviates depending on the force with which the rod 35 acts on it. The nozzle 39 is at least partially closed by the rim 25 of the electromagnet 26. The armature 25 can be rotated about point 37, and it is rigidly connected to a flat spring 36, which, therefore, can be rotated about point 37.
    A slight movement of the core 25 relative to the nozzle 39 allows the pressure of the fluid passing through the hydroline 34 to the cavity 33 to be regulated. By some degree of excitation of the electromagnet 26, the pressure of the liquid in the cavity 33 increases and, therefore, the valve element 21 moves to while the flat spring .36 does not deflect so much that the bark 25 begins to move to the right against the action of electromagnet 26. At this, the nozzle 39 partially opens, resulting in a state of equal news of the valve element 21 occupying a certain position. With an increase in the degree of excitation of the electromagnet 26, a new equilibrium state is created, with the valve element 21 moving to the left due to an increase in fluid pressure c. cavity 33. At the same time, the flat spring 36 is deflected far


    1364
    more, and as a result, the force acting on measles 25 balances the force of electromagnet 26. Moreover, as a result of a small movement of the core 25, the nozzle 39 closes slightly more.
    Invention Formula
    权利要求:
    Claims (2)
    [1]
    1. A device for adjusting the transmission ratio of a V-belt transmission with a stepless speed change, containing a control valve, two hydraulic cylinders and two pulleys connected by a flexible endless V-belt drive, each pulley consisting of two short-wheel drives mounted for movement in the longitudinal direction relative to each other under the action of hydraulic cylinders whose pistons are formed by extreme discs of pulleys which are respectively kinematically connected with the output shaft and the engine, the adjusting valve is provided with an axially moving valve element connected through a helical spring with a moving control element, the control valve is hydraulically controlled, its control chamber communicates with the cavity of the second hydraulic cylinder, and the adjusting valve is connected with a pump and a drain by means of chokes, characterized in that, in order to increase the accuracy of the adjustment, the adjusting element is made in the form of an electromagnet core with throttling with their edges, forming together with the valve element a variable volume cavity in which a screw spring is placed, the axial flow channel is made in the bark, and the variable volume cavity is connected to the discharge line and the drain line through variable chokes formed by the throttling edges of the electromagnet core.
    [2]
    2. A device according to claim 1, characterized in that a constant choke is installed in the discharge line.
    0
    X

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    Cs
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    "
    Editor I.Gorn
    Compiled by A. Volkov
    Tehred L, Serdyukov Proofreader S. Shekmar
    Order 5721/58 Circulation 804 Subscription VNIIPI USSR State Committee
    Co inventions and discoveries 113035, Moscow Zh-35, Raushsk nab., 4/5
    Production and printing company, Uzhgorod, Projecto st., 4
    类似技术:
    公开号 | 公开日 | 专利标题
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    US3596528A|1971-08-03|Infinitely variable cone pulley transmission
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    同族专利:
    公开号 | 公开日
    NL173785B|1983-10-03|
    AU548645B2|1985-12-19|
    EP0076552A1|1983-04-13|
    AU8812682A|1983-04-14|
    JPS5891953A|1983-06-01|
    JPH026948B2|1990-02-14|
    BR8205693A|1983-08-30|
    US4500301A|1985-02-19|
    NL8104510A|1983-05-02|
    NL173785C|1984-03-01|
    AR230497A1|1984-04-30|
    AT27729T|1987-06-15|
    EP0076552B1|1987-06-10|
    DE3276544D1|1987-07-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR1135683A|1955-11-21|1957-05-02|Improvements to control devices for mechanical transmissions|
    US2896588A|1956-04-04|1959-07-28|Sanders Associates Inc|Electro-hydraulic servo valve|
    US2972467A|1959-12-11|1961-02-21|Rivett Lathe & Grinder Inc|Magnetically operated actuator|
    DE2329364A1|1973-06-08|1975-01-02|Bosch Gmbh Robert|AUTOMATIC TRANSMISSION FOR MOTOR VEHICLES|
    NL165821C|1976-02-09|1981-05-15|Doornes Transmissie Bv|INFLATABLE VARIABLE TRANSMISSION.|
    NL7708538A|1977-08-02|1979-02-06|Doornes Transmissie Bv|Motor vehicle infinitely variable transmission - has adjustment system which supplies pressure to control chamber at or above set value|
    NL168038B|1978-05-03|1981-09-16|Doornes Transmissie Bv|APPARATUS FOR CONTROLLING THE TRANSMISSION RATIO OF A VARIABLE TRANSMISSION OF A MOTOR VEHICLE.|
    NL7811192A|1978-11-13|1980-05-16|Doornes Transmissie Bv|METHOD AND APPARATUS FOR CONTROLLING A VARIABLY TRANSMISSION OF A MOTOR VEHICLE.|
    US4387608A|1979-09-12|1983-06-14|Robert Bosch Gmbh|Electronic control for a stepless vehicle transmission using a control member response to dynamic pressure|
    JPS5646153A|1979-09-12|1981-04-27|Bosch Gmbh Robert|Control mechanism for stepless power transmission|JPH0526966B2|1983-08-31|1993-04-19|Fuji Heavy Ind Ltd|
    DE3333136A1|1983-09-14|1985-03-28|Ford-Werke AG, 5000 Köln|CONTROL VALVE FOR A CONTROL VALVE SYSTEM OF A CONTINUOUSLY ADJUSTABLE BELT GEARBOX|
    JPH0321787B2|1983-10-28|1991-03-25|Toyota Motor Co Ltd|
    JPS60222651A|1984-04-20|1985-11-07|Fuji Heavy Ind Ltd|Control device of continuously variable transmission|
    JPH0240139B2|1984-10-30|1990-09-10|Nissan Motor|
    NL8403461A|1984-11-13|1986-06-02|Doornes Transmissie Bv|INFLATABLE VARIABLE TRANSMISSION.|
    JPH0554582B2|1985-06-29|1993-08-12|Fuji Heavy Ind Ltd|
    JPH0554581B2|1985-06-29|1993-08-12|Fuji Heavy Ind Ltd|
    US5458540A|1993-03-08|1995-10-17|Ford Motor Company|Flow control valve for a continuously variable transmission control system|
    JP3771958B2|1994-12-15|2006-05-10|ルークゲトリーベ−ジステーメゲゼルシャフトミットベシュレンクテルハフツング|Drive unit with conical pulley-type winding transmission|
    US6126138A|1998-12-30|2000-10-03|Hamilton Sundstrand Corporation|Pressure reducing valve and continuously variable transmission with control arrangement using same|
    US6174254B1|1998-12-30|2001-01-16|Hamilton Sundstrand Corporation|Continuously variable transmission with control arrangement and for reducing transmission belt slippage|
    ES2218021T3|1999-04-30|2004-11-16|Hydraulik-Ring Gmbh|PRESSURE SUPPLY FOR A CVT TRANSMISSION.|
    US6290620B1|1999-06-25|2001-09-18|Hamilton Sundstrand Corporation|Continuously variable transmission with control arrangement and method for reducing impact of shock load|
    US6634377B1|2001-08-27|2003-10-21|Sonnax Industries, Inc.|Actuator feed limit valve assembly|
    JP4379377B2|2005-04-22|2009-12-09|トヨタ自動車株式会社|Belt type continuously variable transmission|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL8104510A|NL173785C|1981-10-05|1981-10-05|DEVICE FOR CONTROLLING A TRANSMISSION RATIO FOR A VARIABLE DRIVE BELT TRANSMISSION.|
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