CN2425237Y - Planetary hydraulic driven variable drive - Google Patents

Abstract

The utility model relates to a stepless speed change device, which comprises an input shaft, an output shaft, a planet speed change part and a gear shift controlling mechanism. The utility model is characterized in that the utility model is also provided with a resistance oil pump part which comprises and oil pump, an oil inlet, an oil outlet channel and a bypass oil passage, wherein, the bypass oil passage is provided with a rotatable gear-engaging valve and is connected with the gear shift controlling mechanism through a gear-engaging control rod; the oil outlet channel is provided with a resistance adjusting device which comprises a control valve, a restoring spring and a draw rod, wherein, the control valve is connected with a control device through the draw rod. One side of the oil pump is provided with two one-way clutches, a transmission gear and a driving gear of a clutch; the oil pump is directly driven by one of the two one-way clutches; after the direction of the other one-way clutch is changed through the transmission gear, the oil pump is driven by the other one-way clutch; the driving gear of a clutch is connected with the planet speed change part. The utility model has the advantages that the utility model can transfer large power, structure is simple, and the utility model can realize automatic stepless speed change.

Description

The planet formula stepless speed variator that surges

The utility model relates to a kind of speed changer, is specifically related to a kind of planetary gear stepless automatic transmission that adopts the resistance oil pump.

Present automatic transmission, be generally the hydraulic planetary speed changer, it adopts fluid torque converter to drive epicyclic transmission, utilizes the automaitc shfit between the realization planet rows of actuators such as friction catch or free wheel device, and in fact major part all is that a grade automatic transmission is arranged.The transmission efficiency of its fluid torque converter is low, and manufacture difficulty is big, and the automatic executing agency complex structure, to the material requirements height of friction catch part junction plane, thereby the manufacture cost height, be unfavorable for popularization and application in China.

The utility model purpose provide a kind of can transmit high-power, simple in structure, can realize the speed changer of automatic stepless speed change again.

For achieving the above object, the technical solution adopted in the utility model is: a kind of planet formula stepless speed variator that surges, comprise input shaft, the planet speed-change part, position control mechanism, output shaft and resistance oil pump part, described resistance oil pump partly comprises valve body, oil pump is installed in the valve body, and be provided with filler opening, oil discharge passage and bypass oil duct, the bypass oil duct is provided with rotatable engage a gear valve, the engage a gear valve is connected with position control mechanism by the engage a gear controlling rod, oil discharge passage is provided with resistance adjustment device, comprise control valve, return spring is connected a control gear with the pull bar control valve by pull bar, a side of oil pump is provided with two overrunning clutchs on the valve body, one is transmitted gear and a clutch actuation gear, one in two overrunning clutchs directly drives oil pump, another turns to the rear driving oil pump by transmitting the gear change, and the clutch actuation gear partly is connected with described planet speed-change.

In the technique scheme, described " the engage a gear valve is connected with position control mechanism by the engage a gear controlling rod " is meant that position control mechanism can pass through rotation engage a gear controlling rod control engage a gear valve, thus closure or openness bypass oil duct.

In the technique scheme, in order to reduce (as automobile downhill at load, the machining end) produces braking force the time, can also comprise a balancing the load part, described balancing the load partly comprises the bent axle linked gear, the braking maneuver bar that has recessed rail, sliding sleeve, return spring, transmission shaft linked gear and the centrifugal dead man of at least two groups, balance pawl and centrifugal, the bent axle linked gear is connected with the deceleration gearwheel, sliding sleeve is provided with dead man groove and oblique chute and is enclosed within on the braking maneuver bar, return spring is located between sliding sleeve and the bent axle linked gear, centrifugal dead man is installed on the bent axle linked gear by axle, dead man one end stretches in the dead man groove of sliding sleeve, the balance pawl is provided with three groups of protruding keys, snap in the chute of sliding sleeve respectively, in the recessed rail of braking maneuver bar and the centrifugal groove, centrifugal is located on the transmission shaft linked gear, the transmission shaft linked gear is connected with the output gearwheel, also be provided with connecting rod in resistance oil pump part, the middle part of connecting rod is fixed on the valve body by axle, one end of the upper end of connecting rod and control valve is rotationally connected, the following end in contact of braking maneuver bar and described connecting rod.Described " the following end in contact of braking maneuver bar and described connecting rod " is meant that the braking maneuver bar is when the connecting rod direction is moved, can and promote connecting rod with end in contact under the connecting rod rotates, when the braking maneuver bar when moving away from the connecting rod direction, can contact with connecting rod, also can separate with connecting rod, the lower end of connecting rod can be provided with the concave surface that cooperates with the braking maneuver bar to improve reliability.

In the technique scheme, be provided with three groups of centrifugal dead mans, balance pawl and centrifugal, and when claiming to distribute with respect to the braking maneuver pole pair respectively for best.

In the technique scheme, be simplified structure, described balancing the load part can be installed on the valve body of resistance oil pump, can have the hole on the valve body, and the jack shaft of planet speed-change part is passed from the hole, forms the integral installation effect, saves the space.

In the technique scheme, described control gear can be vacuum room, is provided with the vacuum diaphragm in the vacuum room and is connected with the air intake branch of motor by vacuum tube, and an end of pull bar stretches into vacuum room, is connected with the vacuum diaphragm.Described control gear can be solenoid valve.Described control gear can also be the worm and gear device.

In the technique scheme, between described bent axle linked gear and deceleration gearwheel be connected and transmission shaft linked gear and output gearwheel between to be connected can be direct connection, can connect by transition gear, also can connect by transition gear with constant velocity universal joint.

In the technique scheme, be convenient processing and installation, described engage a gear valve can be arranged on the infall of oil discharge passage and bypass oil duct, have two holes on the engage a gear valve, a hole is communicated with oil discharge passage, and another hole can be communicated with or closed bypass oil duct by rotation engage a gear valve.

The utility model working principle is: the utility model is applicable to that need carry out infinite variable speed all kinds of machinery makes speed changer, to be used as automotive transmission is example, the planet speed-change part can adopt any (having provided a kind of structure of planet speed-change part among the embodiment) of the prior art, usually adopt surface friction drag or free wheel device partly to provide resistance in the prior art to planet speed-change, the utility model partly provides specific resistance with resistance oil pump part to planet speed-change, thereby reach stepless, the purpose of even speed change, resistance is wherein regulated by the degree of vacuum in external signal such as the air intake branch of the engine on the one hand, is adjusted by the balancing the load part collecting crankshaft of inside and the speed conditions of output gearwheel on the one hand.Four kinds of operating modes with automobile are the example narration below: 1, during neutral gear, engage a gear valve in the valve body is opened, pilot engine, power enters planet gearing system through input shaft, one the tunnel passes to the resistance oil pump through primary planet frame and planet wheel, the work of drive oil pump, another road passes to the output gearwheel through secondary planet carrier and planet wheel, because engage a gear valve opening, the bypass oil duct is unimpeded, so even control valve is subjected to the control of motor degree of vacuum, oil pump can not produce resistance when rotated yet, planet carrier with its interlock rotates with the sun gear on the jack shaft simultaneously, and the output gearwheel that links to each other with power train is static under the resistance of vehicle body deadweight, the unpowered output of speed changer; 2, starting, acceleration and cruising: the engage a gear bar is pushed into forward position, engage a gear valve closing bypass oil duct, the resistance oil pump only leads to an oil discharge passage of control valve, step on the throttle, engine speed raises, increase along with degree of vacuum in the air intake branch, the vacuum diaphragm drives control valve compression return spring, move to the direction of closing oil outlet, the resistance oil pump is because of the oil outlet cross section narrow rotational resistance that produces that becomes gradually, this resistance rotates the output gearwheel by planetary gear train, vehicle start when this power increases to the running resistance that is enough to overcome the road surface; After this along with the further increase of intake manifold vacuum degree, the oil pump resistance also increases, the also corresponding raising of the speed of a motor vehicle, simultaneously, also begin rotation with centrifugal that exports the gearwheel interlock in the load balancer, the centrifugal force that produces makes the balance pawl expand outwardly and drive the braking maneuver bar and promotes connecting rod, control valve is moved to the direction of closing oil outlet, but because engine speed is higher at this moment, degree of vacuum is bigger, the braking maneuver bar is slower than the effect of vacuum diaphragm to control valve all the time in this accelerating process, quicken thus, when accelerator open degree one timing, the degree of vacuum in the suction tude also remains unchanged, corresponding oil pump resistance also remains unchanged, and automobile constant speed travels; 3, up-hill journey (output shaft load increase): when running into upward slope, the running resistance of Zeng Daing gradually, to be reacted on the bent axle of motor by power train, so engine speed begins to descend, the degree of vacuum in the suction tude also begins to reduce simultaneously, and control valve moves to enlarging the direction that resistance oil pumps hydraulic fluid port under the effect of return spring, thereby reduce the rotational resistance of resistance oil pump, be that the resistance that planetary gear train is subjected to reduces, motor is improved rotating speed, to obtain enough power; 4, descent run (output shaft load reduces): during automobile downhill, gas pedal is loosened, motor is just immediately to being reduced to the idling mode transition, rotating speed begins to descend, the rotating speed of the resistance oil pump that is driven by the primary planet frame also can descend, under the certain situation of control valve aperture, the oil pump resistance also can reduce, the balancing the load part of She Zhiing for this reason, during downhill running, strengthen with the quickening of centrifugal centrifugal force of transmission shaft interlock with slip velocity, make braking maneuver bar motion with its interlock, promoting connecting rod makes control valve to the direction motion of closing oil outlet, simultaneously, slack-off with the bent axle linked gear of deceleration gearwheel interlock because of the decline rotating speed of engine speed, the centrifugal dead man that is installed on it is just stirred the sliding sleeve motion under the effect of return spring, making the braking maneuver bar promote connecting rod by the balance pawl makes control valve to the direction motion of closing oil outlet, both are in conjunction with the decline of the oil pump resistance that causes because of rotating speed descends in order to compensation, the resistance of oil pump is remained in certain scope, thus the brake drag that is supplied with in engine speed decline prerequisite.Above-mentioned working principle is with the vacuum degree control speed change in the engine air inlet tube, also can be with the resistance size of solenoid valve or worm and gear device control resistance oil pump to realize speed change.

Because the technique scheme utilization, the utility model compared with prior art has following advantage:

1, because the utility model adopts the rotational resistance control planetary gears of oil pump to realize speed change, and the generation of oil pump resistance realizes by changing its oil outlet cross section gradually, thereby the combination that does not have brake component and a friction member with separate, realized real stepless change;

2, owing to do not need to utilize friction member and brake component to carry out speed change, thereby reduced processing and material requirements, thereby reduced cost gear;

3, planetary mechanism and resistance oil pump are to serve as according to carrying out automatic speed change with the degree of vacuum in the suction tude of gas pedal control, thereby simple to operate, are easy to control;

4, in speed-change process, the oil pump resistance gradually changes according to the vacuum signal, so speed-change process is comparatively level and smooth;

5, because the setting of balancing the load part, the utility model is that the performance characteristic with motor is a foundation, can automatically realize the optimum Match of the moment of torsion of the load of output shaft and motor according to the operating mode needs, so fuel economy is good;

6, the utility model unpowered output under neutral state is so need not between motor and speed changer clutch to be installed.

Accompanying drawing 1 is the utility model embodiment's a structural representation;

Accompanying drawing 2 is a resistance oil pump part schematic representation among the utility model embodiment;

Accompanying drawing 3 is a balancing the load part schematic representation among the utility model embodiment;

Accompanying drawing 4 is the plan view of balance pawl among the utility model embodiment;

Accompanying drawing 5 is the plan view of Fig. 4.

Wherein: [1], input shaft; [2], input gear; [3], deceleration gearwheel; [4], jack shaft; [5], primary planet frame; [6], planet wheel; [7], sun gear; [8], secondary planet carrier; [9], planet wheel; [10], sun gear; [11], output gearwheel; [12], output shaft; [13], resistance oil pump part; [14], balancing the load part; [15], valve body; [16], oil pump; [17], filler opening; [18], oil discharge passage; [19], bypass oil duct; [20], engage a gear valve; [21], control valve; [22], return spring; [23], pull bar; [24], connecting rod; [25], axle; [26], overrunning clutch; [27], clutch actuation gear; [28], hole; [29], engage a gear controlling rod; [30], position control mechanism; [31], vacuum room; [32], vacuum diaphragm; [33], vacuum tube; [34], bent axle linked gear; [35], braking maneuver bar; [36], flip sleeve letter; [37], return spring; [38], transmission shaft linked gear; [39], centrifugal dead man; [40], balance pawl; [41], centrifugal; [42], dead man groove; [43], chute; [44], recessed rail; [45], protruding key.

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment one: referring to accompanying drawing 1 to shown in the accompanying drawing 5, a kind of planet formula stepless speed variator that surges, comprise input shaft 1, the planet speed-change part, resistance oil pump part 13, balancing the load part 14, position control mechanism 30 and output shaft 12, wherein planet speed-change partly comprises input gear 2, deceleration gearwheel 3, jack shaft 4, by primary planet frame 5, sun gear 7, the primary planet row that planet wheel 6 constitutes, by secondary planet carrier 8, sun gear 10, secondary planet row and output gearwheel 11 that planet wheel 9 constitutes, deceleration gearwheel 3 is by the ring gear and 2 engagements of input gear of a side, external splines by internal spline and jack shaft 4 meshes simultaneously, primary planet frame 5 and secondary planet carrier 8 are placed on the jack shaft 4, two sun gears 7,10 external splines engagements by internal spline and jack shaft 4, planet wheel 9 engagements on output gearwheel 11 and the secondary planet carrier 8, this part is placed on the output shaft by jack shaft 4, and output shaft is supported in the shell by two tapered roller bearings; The planet speed-change part also can adopt existing other planet speed-change structure, and corresponding actuator is partly substituted by the resistance oil pump;

Described resistance oil pump part 13 comprises valve body 15, oil pump 16 is installed in the valve body 15, oil pump 16 is high pressure resistant gear oil pump, valve body 15 is provided with filler opening 17, oil discharge passage 18 and bypass oil duct 19, the intersection of bypass oil duct 19 and oil discharge passage 18 is equipped with engage a gear valve 20, engage a gear valve 20 is provided with two holes, aperture is located at bypass oil duct 19 1 sides, macropore is located at oil discharge passage 18 1 sides, by Unscrew with close bypass oil duct 19, but do not influence the unimpeded of oil discharge passage 18, and be connected with position control mechanism 30 by engage a gear controlling rod 29, oil discharge passage 18 is provided with resistance adjustment device, comprise control valve 21, return spring 22, pull bar 23 and connecting rod 24, the middle part of connecting rod 24 is fixed on the valve body 15 by axle 25, control valve 21 connects a control gear by pull bar 23, the other end of control valve 21 and connecting rod 24 upper ends are rotationally connected, a side of oil pump 16 is provided with two overrunning clutchs 26 on the valve body 15, one is transmitted gear and a clutch actuation gear 27, in two overrunning clutchs 26 one is connected with the oil pump input shaft by the oil pump actuation gear, another is connected with the oil pump input shaft through the oil pump actuation gear after the gear change turns to by transmitting again, clutch actuation gear 27 partly is connected with described planet speed-change, drive by transition wheel by the ring gear on the primary planet frame 5, arbitrary combination in the overrunning clutch 26 is whether by the sense of rotation decision of primary planet frame 5, and that the sense of rotation of oil pump 16 remains is constant;

Described balancing the load part 14 comprises bent axle linked gear 34, the braking maneuver bar 35 that has recessed rail 44, sliding sleeve 36, return spring 37, transmission shaft linked gear 38 and three groups of centrifugal dead mans 39, balance pawl 40 with centrifugal 41, centrifugal dead man 39, balance pawl 40 is symmetrically distributed around braking maneuver bar 35 respectively with centrifugal 41, bent axle linked gear 34 is connected with deceleration gearwheel 3 by transition gear, sliding sleeve 36 is provided with dead man groove 42 and oblique chute 43 and is enclosed within on the braking maneuver bar 35, return spring 37 is located between sliding sleeve 36 and the bent axle linked gear 34, centrifugal dead man 39 is installed on the bent axle linked gear 34 by axle, dead man one end stretches in the dead man groove 42 of sliding sleeve 36, balance pawl 40 is provided with three groups of protruding keys 45, snap in the chute 43 of sliding sleeve 36 respectively, in the recessed rail 44 of braking maneuver bar 35 and centrifugal 41 the groove, be located at for centrifugal 41 on the transmission shaft linked gear 38, transmission shaft linked gear 38 is connected the following end in contact of braking maneuver bar 35 and described connecting rod 24 by transition gear with output gearwheel 11.Described balancing the load part 14 is installed in the lower end of the valve body 15 of resistance oil pump.

Described control gear is a vacuum room 31, is provided with vacuum diaphragm 32 in the vacuum room 31 and is connected with the air intake branch of motor by vacuum tube 33, and an end of pull bar 23 stretches into vacuum room 31, is connected with vacuum diaphragm 32.

Claims (9)

1, a kind of planet formula stepless speed variator that surges comprises input shaft [1], planet speed-change part, position control mechanism [30] and output shaft [12], it is characterized in that: it also comprises resistance oil pump partly [13],

Described resistance oil pump part [13] comprises valve body [15], oil pump [16] is installed in the valve body [15], and be provided with filler opening [17], oil discharge passage [18] and bypass oil duct [19], bypass oil duct [19] is provided with rotatable engage a gear valve [20], engage a gear valve [20] is connected with position control mechanism [30] by engage a gear controlling rod [29], oil discharge passage [18] is provided with resistance adjustment device, comprise control valve [21], return spring [22] and pull bar [23], control valve [21] connects a control gear by pull bar [23], the side that valve body [15] is gone up oil pump [16] is provided with two overrunning clutchs [26], one is transmitted a gear and a clutch actuation gear [27], one in two overrunning clutchs [26] directly drives oil pump [16], another turns to rear driving oil pump [16] by transmitting the gear change, and clutch actuation gear [27] partly is connected with described planet speed-change;

2, the planet according to claim 1 formula stepless speed variator that surges, it is characterized in that: it also comprises a balancing the load part [14], described balancing the load part [14] comprises bent axle linked gear [34], the braking maneuver bar [35] that has recessed rail [44], sliding sleeve [36], return spring [37], transmission shaft linked gear [38] and the centrifugal dead man of at least two groups [39], balance pawl [40] and centrifugal [41], bent axle linked gear [34] is connected with deceleration gearwheel [3], sliding sleeve [36] is provided with dead man groove [42] and oblique chute [43] and is enclosed within on the braking maneuver bar [35], return spring [37] is located between sliding sleeve [36] and the bent axle linked gear [34], centrifugal dead man [39] is installed on the bent axle linked gear [34] by axle, dead man one end stretches in the dead man groove [42] of sliding sleeve [36], balance pawl [40] is provided with three groups of protruding keys [45], snap in the chute [43] of sliding sleeve [36] respectively, in the recessed rail [44] of braking maneuver bar [35] and the groove of centrifugal [41], centrifugal [41] are located on the transmission shaft linked gear [38], transmission shaft linked gear [38] is connected with output gearwheel [11], also be provided with connecting rod [24] in resistance oil pump part [13], the middle part of connecting rod [24] is fixed on the valve body [15] by axle [25], one end of the upper end of connecting rod [24] and control valve [21] is rotationally connected, the following end in contact of braking maneuver bar [35] and described connecting rod [24].

3, the planet according to claim 2 formula stepless speed variator that surges is characterized in that: be provided with three groups of centrifugal dead mans [39], balance pawl [40] and centrifugal [41], and be symmetrically distributed with respect to braking maneuver bar [35] respectively.

4, the planet according to claim 2 formula stepless speed variator that surges, it is characterized in that: between described bent axle linked gear [34] and deceleration gearwheel [3] be connected and transmission shaft linked gear [38] and output gearwheel [11] between to be connected can be direct connection, can connect by transition gear, also can connect by transition gear with constant velocity universal joint.

5, according to the described planet of claim 2 to the 4 formula stepless speed variator that surges, it is characterized in that: described balancing the load part [14] is installed on the valve body [15] of resistance oil pump.

6, the planet according to claim 1 formula stepless speed variator that surges, it is characterized in that: described control gear is vacuum room [31], being provided with vacuum diaphragm [32] in the vacuum room [31] also is connected with the air intake branch of motor by vacuum tube [33], one end of pull bar [23] stretches into vacuum room [31], is connected with vacuum diaphragm [32].

7, the planet according to claim 1 formula stepless speed variator that surges, it is characterized in that: described control gear is a solenoid valve.

8, the planet according to claim 1 formula stepless speed variator that surges, it is characterized in that: described control gear is the worm and gear device.

9, the planet according to claim 1 formula stepless speed variator that surges, it is characterized in that: described engage a gear valve [20] is arranged on the infall of oil discharge passage [18] and bypass oil duct [19], have two holes on the engage a gear valve [20], a hole is communicated with oil discharge passage [18], and another hole can be communicated with or closed bypass oil duct [19] by rotation engage a gear valve [20].