CN205956362U - Quiet hydraulic drive infinitely variable controls gearshift - Google Patents

Abstract

The utility model relates to a quiet hydraulic drive infinitely variable controls gearshift, including operation panel and main, vice operating device, operation panel upper portion has an independent main manipulation deflector that changes speed notch and vice variable speed notch in area, to the spacing slide setting of main gearshift lever reverse gear shift and vice gearshift lever high -speed interlocking on handling the deflector, be equipped with spacing notch on the spacing slide, the main rocking arm one end of main operating mechanism's main gearshift lever lower part passes through that the friction disc pretension hinges on first mounting panel, the other end is connected with the main flexible axle that changes speed, and the owner who handles on the deflector notch that changes speed is worn out to main gearshift lever, and the vice gearshift lever lower part of vice operating mechanism package has vice rocking arm one end and passes through that the friction disc pretension hinges on the second mounting panel, the other end is connected with vice variable speed flexible axle, and the spacing notch of pair change speed notch and spacing slide on the manipulation deflector is worn out to vice gearshift lever. The utility model discloses it is rational in infrastructure, control lightly, can realize arbitrary position location and high -speed and reverse gear shift interlocking, there is obvious neutral gear to feel.

Description

A kind of hydrostatic drive variable speed manipulates gearshift

Technical field

The utility model is related to a kind of hydrostatic drive variable speed and manipulates gearshift, belongs to agricultural harvesting machinery technology Field.

Background technology

Adopting Mechanical Driven bridge to drive self propelled harvester tool, Mechanical Driven bridge has volume greatly, complex structure, behaviour more Make gear few the problems such as.And being had simple to operation using the harvest machinery of HST hydrostatic drive, efficiency of crop is fast high Effect, increasingly becomes user's first-selected type, and the hydrostatic drive type possessing variable speed manipulation will become one kind in future and become Gesture.

And the operating mechanism of hydrostatic drive vehicle has variable speed control function, and can guarantee that in high speed shifting state Under can not be linked into retroversion gear because of maloperation, so that occurring high-reverse dangerous.The behaviour of hydrostatic drive vehicle in the market Vertical structure, using double control crank vehicles, is much not carried out the interlocking of high speed gear and reversing gear, or interlocking structure designs Complexity is it is impossible to effectively realize the reversing of high speed gear lower limit system.And using single control crank vehicle although handle structure is simple on market Single, but there is also that gear setting is unreasonable, control crank i.e. mobility operation of vehicle to be controlled, control stepless change again Speed, control crank needs transverse shifting to carry out longitudinal operation again, and not only control crank is inconspicuous in neutral position, and due to harvesting Control crank mechanically is relatively long, control crank easy clamping stagnation control crank during horizontally slipping, and causes operation inconvenience Problem.Moreover, when control crank is located at variable speed region, because control crank is unable to self-locking it is impossible at an arbitrary position Control crank positions.

Content of the invention

The purpose of this utility model is to provide one kind to manipulate using double-rod, rational in infrastructure, manipulates light, so that main shift lever is led to Cross frictional damping and realize optional position positioning, have obvious neutral feel, and enable top gear and the hydrostatic of reverse gear shift interlocking Pressure drives variable speed to manipulate gearshift.

The utility model is that the technical scheme reaching above-mentioned purpose is：A kind of hydrostatic drive variable speed manipulates gearshift dress Put it is characterised in that：Including operation panel, for controlling the main operating mechanism of vehicle advance and reversing and travelling for control fast The secondary operating mechanism of degree, has mounting seat, mounting seat is provided with the first installing plate and the second installing plate in described operation panel, behaviour Vertical upper box part has manipulation guide plate, manipulates and is provided with independent main transformer speed notch and secondary speed change notch, institute along longitudinal on guide plate The main transformer speed notch stated includes forward gear notch that center line is staggered and reverse gear notch and middle part and forward gear notch and reverse gear Notch communicates and is provided with the spacing breach spacing when neutral to main shift lever at median slot, and median slot, described secondary speed change Notch is in-line notch；Limit skateboard for interlocking with secondary gear lever top gear to main shift lever reverse gear shift is arranged on manipulation On guide plate and can transverse shifting, and limit skateboard be provided with middle part with transition skewed slot spacing edge-cut；

Described main operating mechanism includes main shift lever, friction plate and main speed changing flexible shaft, and main shift lever bottom has master and shakes Arm, one end of master rocker is hinged on the first installing plate by friction plate pretension, the other end is connected with main speed changing flexible shaft, and main transformer Fast bar passes the main transformer speed notch manipulating on guide plate, and main shift lever is corresponding simultaneously with the travel switch that reverses gear being arranged in mounting seat For controlling the travel switch that reverses gear；

Described secondary operating mechanism includes secondary gear lever, friction plate and secondary speed changing flexible shaft, and secondary gear lever bottom has pair and shakes Arm, one end of secondary-rocker is hinged on the second installing plate by friction plate pretension, the other end is connected with secondary speed changing flexible shaft, secondary speed change Bar passes the spacing edge-cut of the secondary speed change notch and limit skateboard manipulating on guide plate.

The utility model adopts double-rod handle structure, and the supporting upper box part that manipulates manipulates independent main transformer speed groove on guide plate Mouth and secondary speed change notch, make main shift lever control electrodeless variable-speed when moving forward and backward of vehicle, secondary gear lever controls the height of vehicle Low speed change position, can be manipulated advancing in conjunction with ergonomics and be integrated in same operation panel with workpiece, make major and minor gear lever Can move forward and backward respectively, installation and debugging are very convenient.The main shift lever of the main operating mechanism of the utility model and secondary operating mechanism Secondary gear lever bottom be equipped with rocking arm, rocking arm can be hinged in respective mounting seat by friction plate pretension, make main shift lever Advance and the locking of optional position of reversing gear are enabled by the frictional resistance of pretension, secondary gear lever passes through pretension frictional resistance simultaneously To realize the locking of any height velocity potential, easy to operate, gear is accurate.Before especially the utility model is in main transformer speed notch Enter also to set on retaining groove mouth and the notch that reverses gear and communicate median slot, and at median slot, be provided with spacing breach, return in main shift lever Middle position indentation, there can be embedded during middle position, and possess obvious middle position feel.The utility model using the travel switch that reverses gear, by master Gear lever controls the opening and closing function of the travel switch that reverses gear, and astern signal is reliable.The utility model is additionally provided with manipulating guide plate The limit skateboard of energy transverse shifting, secondary gear lever is connected with limit skateboard, when therefore operating secondary gear lever, can drive limit simultaneously Position slide plate moves, and when the secondary gear lever of operation is to top gear position, link limit skateboard transverse shifting, so that limit skateboard will be moveed backward Position is closed and can be locked reversing gear, and so when main shift lever is in reversing position, secondary gear lever also cannot turn back high speed position, energy Realize secondary speed change high speed and the reversing interlocking of main transformer speed falls back gear it is ensured that will not hang because of maloperation under high speed shifting state, keep away Exempt from the danger of high-reverse.The utility model passes through practical rational structure, can meet hydraulic-driven vehicle variable speed Functional requirement required for shift control, integrated level is high, is easy to the laying of car load, and the overall gearshift control structure that manipulates is compact, collection One-tenth degree is high.

Brief description

Below in conjunction with the accompanying drawings embodiment of the present utility model is described in further detail.

Fig. 1 is the structural representation that a kind of the utility model hydrostatic drive variable speed manipulates gearshift.

Fig. 2 is that a kind of the utility model hydrostatic drive variable speed manipulates gearshift positioned at secondary speed change low-speed position shape State structural representation.

Fig. 3 is that a kind of the utility model hydrostatic drive variable speed manipulates gearshift positioned at secondary speed change high speed position shape State structural representation.

Fig. 4 is that the utility model limit skateboard is arranged on the structural representation manipulating on guide plate.

Fig. 5 is the structural representation that the utility model is removed operation panel and manipulated guide plate.

Fig. 6 is the structural representation that the main operating mechanism of the utility model and secondary operating mechanism are arranged on mounting seat.

Wherein：1 switch panel, 2 panel racks, 3 manipulation guide plates, 3-1 main transformer speed notch, 3-11 is spacing Breach, 3-12 forward gear notch, 3-13 reverses gear notch, 3-2 pair speed change notch, 4 mounting seats, and 4-1 first installs Plate, 4-2 second installing plate, 5 operation panels, 6 main shift levers, 6-1 master rocker, 6-2 projection, 7 secondary gear levers, 7- 1 secondary-rocker, 8 blocks, 9 limit skateboards, 9-1 spacing edge-cut, inner tank mouths before 9-11,9-12 skew notch, 9- Exterior notch after 13,10 mounting brackets, 11 torsion springs, 12 friction plates, 13 glands, 14 elastic components, 15 back-up rings, 16 locking members, 17 first bearing pins, 18 reverse gear travel switch, 19 main speed changing flexible shafts, 20 secondary speed changing flexible shafts, and 21 the Two bearing pins.

Specific embodiment

As shown in Fig. 1～6, a kind of the utility model hydrostatic drive variable speed manipulates gearshift, including operation panel 5, for controlling the main operating mechanism of vehicle advance and reversing and the secondary operating mechanism for controlling travel speed.See Fig. 1,5 Shown, there is in the utility model operation panel 5 mounting seat 4, mounting seat 4 is provided with the first installing plate 4-1 and the second installing plate 4- 2, this mounting seat 4 is provided with reinforcement between the first installing plate 4-1 and the second installing plate 4-2, or mounting seat 4 adopts framework to tie Structure, operation panel 5 top has manipulation guide plate 3, and this manipulation guide plate 3 can be arranged on operation panel 5 top by securing member, or behaviour Vertical guide plate 3 is welded on operation panel 5.As shown in Fig. 1～4, the utility model manipulates independent along being longitudinally provided with guide plate 3 Main transformer speed notch 3-1 and secondary speed change notch 3-2, by main transformer speed notch 3-1 and secondary speed change notch 3-2 to main shift lever 6 and pair Gear lever 7 is guided, due to being operated using longitudinal during operation, easy to operate, and is difficult stagnant card, and operation is smooth.

As shown in Fig. 1～4, the utility model main transformer speed notch 3-1 include forward gear notch 3-12 that center line is staggered and Reverse gear notch 3-13 and middle part communicates median slot with the forward gear notch 3-12 and notch 3-13 that reverses gear, and set at median slot Have to spacing spacing breach 3-11 during main shift lever 6 neutrality, when main shift lever 6 is arranged on middle position, enable main shift lever 6 position In spacing breach 3-11, and can substantially have neutral position feel, main shift lever 6 is located in forward gear notch 3-12 and realizes vehicle Move ahead, and main shift lever 6 is located at and reverses gear in notch 3-13, realizes the reversing of vehicle, and the spacing breach being located at median slot During 3-11, so that vehicle is stopped, making main shift lever 6 control the electrodeless variable-speed when moving forward and backward for the vehicle.As shown in Fig. 1～4, this Utility model pair speed change notch 3-2 is in-line notch, makes secondary gear lever 7 carry out high-low speed change in secondary speed change notch 3-2, when The front end that secondary gear lever 7 is located at secondary speed change notch 3-2 is low speed position, and is high speed position in the rear end of secondary speed change notch 3-2, passes through Secondary gear lever 7 controls the high-low speed change position of vehicle, manipulates main shift lever 6 and vehicle to run realized by secondary gear lever 7.

As shown in Fig. 1～4, the utility model is used for the limit to main shift lever 6 reverse gear shift and secondary gear lever 7 top gear interlocking Position slide plate 9 is arranged on manipulation guide plate 3 and energy transverse shifting, and limit skateboard 9 is provided with the limit with transition skewed slot for the middle part Position notch 9-1.As shown in Fig. 2～4, manipulate guide plate 3 bottom and be provided with multiple L for limit skateboard 9 is carried out with longitudinal spacing The block 8 of shape or the block 8 of flute profile, limit skateboard 9 is arranged on the block 8 of each L-shaped or the cavity of the block 8 of flute profile, becomes secondary Fast bar 7 drives limit skateboard 9 transverse shifting, and realizes top gear and reverse gear shift interlocking, it is to avoid high-reverse phenomenon occurs, and is becoming When fast bar shifts to bottom gear position, unblock reversing position, can arbitrarily control advance reversing.As shown in Figure 4, this manipulation guide plate 3 are provided with multiple mounting brackets 10, be arranged on operation panel 5 by securing member, and block 8 can be according to locus demand and peace Dress support 10 is formed integrally.

As shown in Fig. 1～4, the main transformer speed notch 3-1 that the utility model manipulates on guide plate 3 is located at left side, secondary speed change groove Mouth 3-2 is located at right side, and the forward gear notch 3-12 on main transformer speed notch 3-1 is located at front outside, the notch 3-13 that reverses gear positioned at rear interior Side, forward gear notch 3-12 is be arranged in parallel with the notch 3-13 that reverses gear, and median slot is basic and forward gear notch 3-12 and the groove that reverses gear Mouth 3-13 is vertically arranged, and spacing breach 3-11 can be arranged on the place side of median slot.As shown in Fig. 2～4, and limit skateboard 9 On spacing edge-cut 9-1 include front inner tank mouths 9-11, the skew notch 9-12 at middle part and rear exterior notch 9-13, front inner tank mouths 9-11 with Exterior notch 9-13 is parallel afterwards, and front inner tank mouths 9-11 and rear water jacket pass through skew notch 9-12 transition, can put down when secondary gear lever 7 operates Slip over and cross, without stagnant card, when secondary gear lever 7 is located at secondary speed change notch 3-2 rear portion top gear, limit skateboard 9 blocks main transformer The notch 3-13 that reverses gear of fast notch 3-1.When pulling high speed gear because of secondary gear lever 7, limit skateboard 9 position is made to slide from the rightmost side To the leftmost side, the notch 3-13 that reverses gear of now limit skateboard 9 closing main shift lever 6, main shift lever 6 cannot be placed in the notch 3- that reverses gear In 13, simultaneously when main shift lever 6 is in and reverses gear notch 3-13, secondary gear lever 7 also cannot turn back the rear portion of secondary speed change notch 3-2 High speed gear, enable secondary speed change high speed and main transformer speed reversing interlocking, structure is simple, and reliable operation, when secondary gear lever is low During fast position, main shift lever 6 can arbitrarily control the direction that moves forward and backward.

As shown in Fig. 1～6, the main operating mechanism of the utility model includes main shift lever 6, friction plate 12 and main speed changing flexible shaft 19, main shift lever 6 bottom has master rocker 6-1, and one end of master rocker 6-1 is hinged on the first installing plate by friction plate 12 pretension 4-1 is upper, the other end is connected with main speed changing flexible shaft 19, controls vehicle hydraulic to drive speed change by main speed changing flexible shaft 19, and main transformer speed Bar 6 passes the main transformer speed notch 3-1 manipulating on guide plate 3, so that main shift lever 6 is moved along along main transformer speed notch 3-1, realizes vehicle Stepless move forward and backward, because master rocker 6-1 and friction plate 12 have certain damping friction power, so that main shift lever 6 is manipulated to Any one position all enables self-locking, without moving.As shown in Fig. 5,6, the utility model is to adjust main shift lever 6 Damping friction power, the master rocker 6-1 of main shift lever 6 is arranged between two friction plates 12, and the first installing plate 4-1 has the first pin Axle 17, two friction plates 12, master rocker 6-1 and gland 13 are arranged on the first bearing pin 17, and locking member 16 is arranged on the first bearing pin On 17 and withstand on gland 13, friction plate 12 pretension on master rocker 6-1, is rubbed come damping adjusting by gland 13 by locking member 16 Wiping power, this locking member 16 can adopt securing member, such as using locking nut and circlip, circlip is enclosed within the first lock shaft 17 On, and locked by locking nut.The utility model preferably also has the elasticity for adjusting pretightning force on the first bearing pin 17 Part 14 and back-up ring 15, this adoptable stage clip of elastic component 14 or butterfly spring or elastomeric pad etc., locking member 16 is arranged on One bearing pin 17 simultaneously withstands on back-up ring 15, so that elastic component 14 is withstood on gland 13, can be reached by the decrement of regulation elasticity part 14 To required optimal damping frictional force during work.

As shown in Fig. 5,6, the utility model main shift lever 6 is corresponding with the travel switch 18 that reverses gear being arranged in mounting seat 4 And reverse gear travel switch 18 for control, when main shift lever 6 enters in the notch 3-13 that reverses gear, manipulate by main shift lever 6 Gear travel switch 18 closes, and exports astern signal.In reversing gear optional position, reverse gear the utility model main shift lever 6 stroke Switch 18 all will remain closed, the utility model master rocker 6-1 be provided with for control the travel switch 18 that reverses gear projection 6-2 or Arc gap, projection 6-2 compression the falling with roller when main shift lever 6 pulls car backing position backward, on master rocker 6-1 Gear travel switch 18, when reversing gear, travel switch 18 roller contact moves downward, and the travel switch 18 that reverses gear closes, and sends the letter that reverses gear Number；And when main shift lever 6 returns to middle position, the travel switch 18 roller contact that reverses gear protrudes upward, return to initial position, master shakes Projection 6-2 on arm 6-1 can adopt arc block or cam bit.The utility model can be set on master rocker 6-1 with derivation accommodation There is arc gap, travel switch 18 roller that will reverse gear embeds circumferential notch and also all can achieve travel switch 18 closure function of reversing gear.

As shown in Fig. 5,6, the utility model main shift lever 6 bottom is provided with torsion spring 11, and torsion spring 11 one end is connected to main transformer On fast bar 6, on other end connection the first installing plate 4-1, and the hinged central axis of the central axis of torsion spring 11 and master rocker 6-1 Intersecting, when main shift lever 6 is located at middle position, enables main shift lever 6 to embed spacing breach 3-11 under torsion spring 11 effect, and possess Significantly middle position feel.

As shown in Fig. 1～6, the utility model pair operating mechanism includes secondary gear lever 7, friction plate 12 and secondary speed changing flexible shaft 20, secondary gear lever 7 bottom has secondary-rocker 7-1, and one end of secondary-rocker 7-1 is hinged on the second installing plate by friction plate 12 pretension 4-2 is upper, the other end is connected with secondary speed changing flexible shaft 20, controls vehicle hydraulic to drive high-low speed change by secondary speed changing flexible shaft 20, secondary change Fast bar 7 pass manipulate guide plate 3 on secondary speed change notch 3-2 and limit skateboard 9 spacing edge-cut 9-1, because secondary-rocker 7-1 with rub Pad 12 has certain damping friction power, provides frictional damping sense to secondary gear lever 7, simultaneously in secondary gear lever 7 to secondary speed change Drive limit skateboard 9 mobile during the high speed position of notch 3-2 rear portion simultaneously, and block the notch 3-13 that reverses gear of main transformer speed notch 3-1, make Vehicle is unable to high-reverse.

As shown in Fig. 5,6, the secondary-rocker 7-1 of the utility model pair gear lever 7 is arranged between two friction plates 12, and second Installing plate 4-2 is provided with the second bearing pin 21, and two friction plates 12, secondary-rocker 7-1 and gland 13 are arranged on the second bearing pin 21, lock Tight part 16 is arranged on bearing pin and withstands on gland 13, so that secondary-rocker 7-1 and friction plate 12 is had by locking member 16 certain Pretightning force, has reliable damping feel in operating process.For conveniently pretightning force can be adjusted, this adoptable fastening of locking member 16 Part, such as bolt and elastic washer, circlip are enclosed within bolt and are screwed in locking on the second lock shaft 21.As shown in Fig. 5,6, this Elastic component 14 for adjusting pretightning force is also had on utility model the second bearing pin 21, locking member 16 is arranged on the second bearing pin 21 And withstand on elastic component 14, required optimal damping friction during work can be reached by the decrement of regulation elasticity part 14 Power, this elastic component 14 can adopt elastic washer or butterfly spring, is directly acted on elastic component 14 by locking member 16.

As shown in Fig. 1～3, the utility model is connected with panel rack 2 on operation panel 5 top, and switch panel 1 is arranged on face On board mount 2, switch panel 1 is provided with multigroup hydraulic control button and is maintained an equal level with the head of main shift lever 6 and secondary gear lever 7, leads to While crossing push-and-pull main shift lever 6 and secondary gear lever 7, palm finger can easily touch positioned at anterior controlling switch panel 1 On switch it is ensured that manipulate control stick while can easily touch control button, with realize control harvest machinery component actuation, Swift and convenient to operate.

The above-mentioned general principle that the utility model patent has been shown and described and principal character and advantage of the present utility model. It should be understood by those skilled in the art that arriving, the utility model is not restricted to the described embodiments, above-described embodiment and specification Described in principle of the present utility model is simply described, in the premise without departing from the utility model Patent design spirit and scope Under, the utility model also has various changes and modifications, and these changes and improvements both fall within claimed the utility model patent In the range of, the utility model patent requirements protection domain is defined by appended letter of authorization and its equivalent article.

Claims (10)

1. a kind of hydrostatic drive variable speed manipulate gearshift it is characterised in that：Including operation panel (5), for controlling car Advance and reversing main operating mechanism and for controlling the secondary operating mechanism of travel speed, has in described operation panel (5) There is mounting seat (4), mounting seat (4) is provided with the first installing plate (4-1) and the second installing plate (4-2), operation panel (5) top has Manipulate guide plate (3), manipulate the upper edge of guide plate (3) and be longitudinally provided with independent main transformer speed notch (3-1) and secondary speed change notch (3- 2), described main transformer speed notch (3-1) include forward gear notch (3-12) that center line is staggered and the notch that reverses gear (3-13) and Middle part communicates median slot with forward gear notch (3-12) and the notch that reverses gear (3-13), and is provided with to main shift lever at median slot (6) spacing spacing breach (3-11) during neutrality, described secondary speed change notch (3-2) is in-line notch；For to main transformer speed The limit skateboard (9) that bar (6) reverse gear shift is interlocked with pair gear lever (7) top gear is arranged on manipulation guide plate (3) above and energy is horizontal Mobile, and limit skateboard (9) is provided with the spacing edge-cut (9-1) with transition skewed slot for the middle part；

Described main operating mechanism includes main shift lever (6), friction plate (12) and main speed changing flexible shaft (19), under main shift lever (6) Portion has a master rocker (6-1), one end of master rocker (6-1) by friction plate (12) pretension be hinged on the first installing plate (4-1) upper, The other end is connected with main speed changing flexible shaft (19), and main shift lever (6) passes main transformer speed notch (3-1) manipulating on guide plate (3), Main shift lever (6) is corresponding with the travel switch that reverses gear (18) being arranged in mounting seat (4) to reverse gear travel switch for controlling (18)；

Described secondary operating mechanism includes secondary gear lever (7), friction plate (12) and secondary speed changing flexible shaft (20), under secondary gear lever (7) Portion has a secondary-rocker (7-1), one end of secondary-rocker (7-1) by friction plate (12) pretension be hinged on the second installing plate (4-2) upper, The other end is connected with secondary speed changing flexible shaft (20), secondary gear lever (7) pass secondary speed change notch (3-2) in manipulation guide plate (3) and The spacing edge-cut (9-1) of limit skateboard (9).

2. a kind of hydrostatic drive variable speed according to claim 1 manipulate gearshift it is characterised in that：Described Manipulate guide plate (3) bottom and be provided with the block (8) of multiple L-shaped for limit skateboard (9) is carried out with longitudinal spacing or flute profile Block (8), limit skateboard (9) is arranged on the block (8) of each L-shaped or the cavity of the block (8) of flute profile.

3. a kind of hydrostatic drive variable speed according to claim 1 and 2 manipulate gearshift it is characterised in that：Institute State main transformer speed notch (3-1) manipulating on guide plate (3) and be located at left side, secondary speed change notch (3-2) positioned at right side, main transformer speed notch (3-1) the forward gear notch (3-12) on is located at front outside, the notch that reverses gear (3-13) is located at rear inner side, forward gear notch (3-12) It is arranged in parallel with the notch that reverses gear (3-13), inner tank mouths (9-11), middle part before spacing edge-cut (9-1) inclusion on limit skateboard (9) Skew notch (9-12) and rear exterior notch (9-13), front inner tank mouths (9-11) are parallel with rear exterior notch (9-13), in secondary gear lever (7) be located at secondary speed change notch (3-2) rear portion top gear when, limit skateboard (9) blocks the notch that reverses gear of main transformer speed notch (3-1) (3-13).

4. a kind of hydrostatic drive variable speed according to claim 1 manipulate gearshift it is characterised in that：Described master Gear lever (6) bottom is provided with torsion spring (11), and torsion spring (11) one end is connected on main shift lever (6), the other end connects the first peace On dress plate (4-1), and the central axis of torsion spring (11) is intersected with the hinged central axis of master rocker (6-1).

5. a kind of hydrostatic drive variable speed according to claim 1 manipulate gearshift it is characterised in that：Described master The master rocker (6-1) of gear lever (6) is arranged between two friction plates (12), and the first installing plate (4-1) has the first bearing pin (17), two friction plates (12), master rocker (6-1) and gland (13) are arranged on the first bearing pin (17), and locking member (16) is installed Above and withstand on gland (13) in the first bearing pin (17), gland (13) is by friction plate (12) pretension on master rocker (6-1).

6. a kind of hydrostatic drive variable speed according to claim 5 manipulate gearshift it is characterised in that：Described Elastic component (14) for adjusting pretightning force and back-up ring (15) are also equipped with the first bearing pin (17), locking member (16) is arranged on One bearing pin (17) simultaneously withstands on back-up ring (15), and elastic component (14) withstands on gland (13).

7. a kind of hydrostatic drive variable speed according to claim 1 manipulate gearshift it is characterised in that：Described pair The secondary-rocker (7-1) of gear lever (7) is arranged between two friction plates (12), and the second installing plate (4-2) is provided with the second bearing pin (21), two friction plates (12), secondary-rocker (7-1) and gland (13) are arranged on the second bearing pin (21), and locking member (16) is installed Above and withstand on gland (13) in the second bearing pin (21).

8. a kind of hydrostatic drive variable speed according to claim 7 manipulate gearshift it is characterised in that：Described Elastic component (14) for adjusting pretightning force is also had on two bearing pins (21), locking member (16) is arranged on the second bearing pin (21) simultaneously Withstand on elastic component (14).

9. a kind of hydrostatic drive variable speed according to claim 1 manipulate gearshift it is characterised in that：Described Operation panel (5) top is connected with panel rack (2), and switch panel (1) is arranged on panel rack (2), and switch panel sets on (1) There is multigroup hydraulic control button and the head with main shift lever (6) and secondary gear lever (7) maintains an equal level.

10. a kind of hydrostatic drive variable speed according to claim 1 manipulate gearshift it is characterised in that：Described Master rocker (6-1) be provided with for controlling the reverse gear projection (6-2) of travel switch (18) or arc gap.