CN104074968B - Examination gearbox is accompanied in transmission test self shifter - Google Patents

Examination gearbox is accompanied in transmission test self shifter Download PDF

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Publication number
CN104074968B
CN104074968B CN201410308126.5A CN201410308126A CN104074968B CN 104074968 B CN104074968 B CN 104074968B CN 201410308126 A CN201410308126 A CN 201410308126A CN 104074968 B CN104074968 B CN 104074968B
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CN
China
Prior art keywords
gear
clutch
oil
shaft assembly
gearbox
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CN201410308126.5A
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Chinese (zh)
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CN104074968A (en
Inventor
王军
马庆丰
童强
胡浩
代冠军
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Anhui Heli Co Ltd
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Anhui Heli Co Ltd
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/089—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears all of the meshing gears being supported by a pair of parallel shafts, one being the input shaft and the other the output shaft, there being no countershaft involved
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
    • F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
    • F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
    • F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
    • F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • F16D25/14—Fluid pressure control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H2057/0081—Fixing of, or adapting to transmission failure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02069—Gearboxes for particular applications for industrial applications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2035—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with two engaging means

Abstract

The present invention relates to transmission test self shifter and accompany examination gearbox.Including gear box casing assembly, hydraulic clutch assy, output shaft assembly and hydraulic system, hydraulic clutch assy and output shaft assembly are fixed in gear box casing assembly, hydraulic system provides power to hydraulic clutch assy, and outputs power to output shaft assembly.As shown from the above technical solution, the hydraulic clutch assy of the present invention makes different pairs of gear be in bonding state, to reach the purpose of gearshift；Output shaft assembly for the power that passes over through hydraulic clutch assy of output, and by with clutch meshed gears by the power rating of power, the scope that conversion can cover to motor characteristic curve；Hydraulic system, according to different control needs, sets up oil pressure to inside different clutches so that corresponding gear mesh combines, thus realizes the remote auto to gearbox and shift gears.

Description

Examination gearbox is accompanied in transmission test self shifter
Technical field
The present invention relates to a kind of transmission test self shifter and accompany examination gearbox.
Background technology
Drive disk assembly is as the core component of vehicle, and it provides the transmission of reliable power and appropriate power state (rotating speed and moment of torsion) for complete machine, and gearbox is the core of transmission system, and the quality of its performance is directly involved in the quality and safety of car load.For guaranteeing the properties of drive disk assembly in gearbox, at present domestic project vehicle manufacturers is to study, verify, check that the performance of speed changer has built all kinds of testing stand, many advantages such as wherein alternating current blocking test platform is good with its energy-efficient performance, control accuracy is high, simple in construction, maintainability is good, reliability is high and be more and more used.And use such testing stand, owing to motor characteristic curve and engine mission external characteristic curve exist bigger difference, then must use and accompany examination gearbox, to change the real output state of tested workpiece, meet motor characteristic demand.
For solving this contradiction, according to by the gearratio of test specimen and gear, the mode that usual each producer uses has two kinds: one to be speed changer little for gearratio excursion, that gear number is few, uses the method expanding power of motor to solve.The shortcoming of this kind of method is to easily cause power of motor to select excessive, equipment construction to put into height, energy waste, use cost high；Two is to use one to accompany examination gearbox, the usually additional gear shifting actuating mechanism of mechanical changeover gearbox, solves the demand that gearbox output mates with power of motor；Mechanical changeover additional gear shifting actuating mechanism structure is complicated, and floor space is big, is easily generated fault, automatically controls difficulty, and maintaining difficulty is bigger；Simultaneously because have employed synchronized inside it, being also easy to produce and shifting gears not in place and damage and accompany the phenomenon trying gearbox.
Summary of the invention
It is an object of the invention to provide a kind of transmission test self shifter and accompany examination gearbox, the power output condition conversion of speed changer can be the scope that motor characteristic curve can cover by this gearbox, thus reduce the input of equipment, reduce energy resource consumption, and easily controllable and maintenance.
nullFor achieving the above object，Present invention employs techniques below scheme: include gear box casing assembly、Hydraulic clutch assy、Output shaft assembly and hydraulic system，Described hydraulic clutch assy and output shaft assembly are fixed in gear box casing assembly，Described hydraulic system provides pressure oil to hydraulic clutch assy，Make hydraulic clutch assy control clutch by the foundation of oil pressure with off-load and separate combination to realize gearshift，And output power to output shaft assembly，Described gear box casing assembly includes accompanying examination tank shell、Gearbox front end-plate and gearbox cover plate，Described examination tank shell of accompanying includes base plate，Before being vertically welded with on described base plate、After、Left、Right steel plate，A described left side、The dividing plate being perpendicular to both it is additionally provided with between right steel plate，Before described dividing plate is parallel to、Rear steel plate，And between dividing plate and base plate, leave gap，Described dividing plate will accompany examination tank shell to be divided into first、Second area，Described first area is integrated with transmission oil storage tank，Hydraulic clutch assy and output shaft assembly it is fixed with in described second area，Described gearbox front end-plate is fixed on by screw accompanies on examination tank shell，Before described gearbox cover plate is arranged on、After、Left、The top of right steel plate.
Oil pump, air filter, liquid level gauge, oil adsorption filter, oil suction joint and purge cock it is provided with in described first area.
Transmission oil storage tank that described hydraulic system includes being sequentially connected by pipeline, oil pump, filter, valve plate, the first solenoid directional control valve, the oil-in of described oil pump is connected with transmission oil storage tank by oil adsorption filter, the oil-out of oil pump is connected with filter by check valve, the outlet of filter is connected with the P mouth of the first solenoid directional control valve, A, B mouth of the first solenoid directional control valve is connected with 1 gear, 2 gear clutches respectively, and the T mouth of the first solenoid directional control valve is individually connected with transmission oil storage tank.
Described hydraulic system also includes the electromagnetism unloading overflow valve being made up of the second solenoid directional control valve and overflow valve, the T mouth of the second described solenoid directional control valve is connected with the cooling oil duct of hydraulic clutch assy, and the cooling oil duct of hydraulic clutch assy communicates with transmission oil storage tank.
On pipeline between described check valve and filter, bypass has the branch road arranging safety valve, and its set pressure of described safety valve is higher than overflow valve.
nullDescribed hydraulic clutch assy includes clutch shaft assembly，Described clutch shaft assembly is provided with a gear driving gear、Two keep off driving gears and keep off driving gear with one respectively、The gear clutch and two that two gear driving gears match keeps off clutches，A described gear clutch and two gear clutches include partition respectively、Friction plate、Piston assembly and spring，A described gear driving gear and two gear driving gears pass through needle bearing empty set respectively on clutch shaft assembly，And one gear driving gear and two gear driving gears respectively by spline and one gear clutch and two gear clutches friction plate be connected，The partition of one gear clutch and two gear clutches is connected with clutch shaft assembly by teeth groove，Described partition and friction plate interval are arranged，Described piston assembly is sheathed on clutch shaft assembly and uses sealing ring to seal，Piston assembly and clutch shaft assembly、Sealing ring forms a confined space，Under the effect of oil pressure and spring，Piston assembly moves left and right，Described piston assembly is provided with controls valve，Described output shaft assembly includes output shaft，Described output shaft is provided with the gear driven gear and two gear driven gears being meshed with a gear driving gear and two gear driving gears.
As shown from the above technical solution, the hydraulic clutch assy of the present invention is to be separated or combination with unloading control clutch by the foundation of oil pressure so that different pairs of gear is in bonding state, to reach the purpose of gearshift；Output shaft assembly for the power that passes over through hydraulic clutch assy of output, and by with clutch meshed gears by the power rating of power, the scope that conversion can cover to motor characteristic curve；Hydraulic system is by controlling magnetic valve, according to different control needs, setting up oil pressure to inside different clutches so that corresponding gear mesh combines, thus realizes the remote auto to gearbox and shift gears.
Accompanying drawing explanation
Fig. 1 is the top view of the present invention；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the structural representation of hydraulic clutch assy of the present invention；
Fig. 4 is the structural representation of output shaft assembly of the present invention；
Fig. 5 is the structural representation of present hydraulic system.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings:
Examination gearbox is accompanied in a kind of transmission test self shifter as shown in Figure 1, including gear box casing assembly 1, hydraulic clutch assy 2, output shaft assembly 3 and hydraulic system, hydraulic clutch assy 2 and output shaft assembly 3 are fixed in gear box casing assembly 1, hydraulic system provides pressure oil to hydraulic clutch assy 2, make hydraulic clutch assy 2 control clutch with off-load by the foundation of oil pressure and separate combination to realize shifting gears, and output power to output shaft assembly 3.Specifically, hydraulic clutch assy 2 is to be separated or combination with unloading control clutch by the foundation of oil pressure so that different pairs of gear is in bonding state, to reach the purpose of gearshift；The power that output shaft assembly 3 passes over through hydraulic clutch assy for output, and by with clutch meshed gears by the power rating of power, the scope that conversion can cover to motor characteristic curve；Hydraulic system is by controlling magnetic valve, according to different control needs, setting up oil pressure to inside different clutches so that corresponding gear mesh combines, thus realizes the automatically controlled gear of remote auto to gearbox.
Further, gear box casing assembly 1 includes accompanying examination tank shell 11, gearbox front end-plate 12 and gearbox cover plate 13, examination tank shell 11 is accompanied to include base plate 111, front, rear, left and right steel plate 112,113,114,115 it is vertically welded with on base plate 111, it is additionally provided with, between left and right steel plate 114,115, the dividing plate 14 being perpendicular to both, dividing plate 14 is parallel to forward and backward steel plate 112,113, and between dividing plate 14 and base plate 111, leaving gap, dividing plate 14 will accompany examination tank shell 11 to be divided into first, second region A, B；The bottom hollow out of dividing plate 14, had both added the rigidity accompanying examination tank shell, can also effectively prevent bubble to be inhaled into oil pump simultaneously, and build-up of pressure is unstable, and the normal work of examination case is accompanied in impact；First area A is integrated with transmission oil storage tank, i.e. first area A is simultaneously as transmission oil storage tank, hydraulic clutch assy 2 and output shaft assembly 3 it is fixed with in second area B, gearbox front end-plate 12 is fixed on by screw accompanies on examination tank shell 11, and gearbox cover plate 13 is arranged on the top of front, rear, left and right steel plate 112,113,114,115.I.e. accompanying examination tank shell 11 to use Plate Welding to form, gearbox front end-plate employing screw is fixed on accompanies on examination tank shell, for removable.Accompany and be assembled with bearing block on examination tank shell, be used for supporting each power transmission shaft and gear；
Further, oil pump 42, air filter 61, liquid level gauge 62, oil adsorption filter 46, oil suction joint 63 and purge cock 64 it are provided with in the A of first area.
Further, as shown in Figure 5, transmission oil storage tank 41 that hydraulic system includes being sequentially connected by pipeline, oil pump 42, filter 43, valve plate the 44, first solenoid directional control valve 45, the oil-in of oil pump 42 is connected with transmission oil storage tank 41 by oil adsorption filter 46, the oil-out of oil pump 42 is connected with filter 43 by check valve 47, the outlet of filter 43 is connected with the P mouth of the first solenoid directional control valve 45, A, B mouth of the first solenoid directional control valve 45 is connected with 1 gear, 2 gear clutches respectively, and the T mouth of the first solenoid directional control valve 45 is individually connected with transmission oil storage tank 41.Oil adsorption filter 46 is possible to prevent bulky grain pollutant to enter oil pump 42; damage oil pump 42 and each valve group; preferably; for ensureing that oil pump 42 oil suction is abundant, oil adsorption filter 46 is set to coarse filtration, and filtering accuracy is relatively low; through oil pump 42 suck small particles of pollution thing yet suffer from enter valve inner possibility; therefore filter 43 is set, to realize the interception of small particles of pollution thing, protects each valve in rear end and accompany examination case from pollution damage.
Further, hydraulic system also includes the electromagnetism unloading overflow valve being made up of the second solenoid directional control valve 50 and overflow valve 49, the T mouth of the second solenoid directional control valve 50 is connected with the cooling oil duct 29 of hydraulic clutch assy 2, and the cooling oil duct of hydraulic clutch assy 2 communicates with transmission oil storage tank 41.Second solenoid directional control valve and overflow valve are combined into electromagnetism unloading overflow valve, are used for setting up system pressure, and meanwhile, when accompanying examination case to be in neutral, pressure is automatically by the second solenoid directional control valve off-load, thus reduces electric energy and equipment loss.
Further, on the pipeline between check valve 47 and filter 43, bypass has the branch road arranging safety valve 48, and its set pressure of safety valve 48 is higher than overflow valve 49.Safety valve plays the effect of voltage-limiting protection, and its set pressure is higher than overflow valve, and when overflow valve inefficacy causes oil pressure to raise, off-load opened in time by safety valve, thus protects oil pump, pipeline, accompanies the clutch tried in gearbox, it is to avoid elevated pressures occurs, causes damage.
The operation principle of hydraulic system is:
Oil pump arrives filter through pipeline through oil adsorption filter from transmission oil storage tank internal suction fluid, the pressure oil that oil pump goes out, then arrives the P mouth of the first solenoid directional control valve；According to gear needs, whether electric obtain by the left and right bit line packet controlling the first solenoid directional control valve, thus pressure oil is delivered to inside 1 gear clutch or 2 gear clutches through A, B mouth of the first solenoid directional control valve respectively, it is achieved gearshift.
nullFurther，Such as Fig. 3、Shown in Fig. 4，Hydraulic clutch assy 2 includes clutch shaft assembly 21，Clutch shaft assembly 21 is provided with a gear driving gear 22、Two keep off driving gears 23 and keep off driving gear 22 with one respectively、Gear clutch 24 and the two gear clutches 25 that two gear driving gears 23 match，One gear clutch 24 and two gear clutches 25 include partition 51 respectively、Friction plate 52、Piston assembly 53 and spring 54，One gear driving gear 22 and two gear driving gears 23 pass through needle bearing 55 empty set respectively on clutch shaft assembly 21，And one gear driving gear 22 and two gear driving gears 23 be connected by the friction plates 52 of spline with a gear clutch 24 and two gear clutches 25 respectively，Friction plate 52 can axially move along spline，Cannot relatively rotate between the two；The partition 51 of one gear clutch 24 and two gear clutches 25 is connected with clutch shaft assembly 21 by teeth groove, partition 51 can axially move along the spline groove on clutch shaft assembly 21, cannot relatively rotate between the two, partition 51 and friction plate 52 interval are arranged, when no pressure oil is passed through, there is gap between friction plate 52 and partition 51, both can relatively rotate, i.e. one gear, two gear driving gears 22,23 all can and clutch shaft assembly 21 between produce relative rotation；Piston assembly 53 is sheathed on clutch shaft assembly 21 and uses sealing ring 56 to seal, piston assembly 53 and clutch shaft assembly 21, sealing ring 56 form a confined space, under the effect of oil pressure and spring 54, piston assembly 53 moves left and right, and piston assembly 53 is provided with controls valve.
Output shaft assembly 3 includes that output shaft 33, output shaft 33 are provided with gear driven gear 31 and the two gear driven gears 32 being meshed with a gear driving gear 22 and two gear driving gears 23.
The operation principle of fluid clutch is:
1) it is passed through when no pressure oil, i.e. during neutral, one gear, two gear clutches 24,25 piston assembly 53 under the effect of spring 54, it is depressed into low order end, gap is there is between friction plate 52 and partition 51, it is in released state, the most unpowered output between one gear driving gear 22 and two gear driving gears 23 and clutch shaft assembly 21；
2) when piston assembly 53 right-hand member of a gear clutch 24 is injected into pressure oil, piston assembly 53 moves to left under the effect of pressure oil, dish plate 57 is promoted to transmit the force to pressing plate 58, partition 51 is compressed by pressing plate 58, thus eliminate the gap between friction plate 52 and partition 51, and both are made tightly to paste jail；Now, one gear driving gear 22 is closely linked with clutch shaft assembly 21 by a gear clutch 24, and rotate with the rotation of clutch shaft assembly 21, partition 51 and friction plate 52 are under the pressuring action of piston assembly 53 power, produce frictional force, the power of clutch shaft assembly 21 is passed to a gear driving gear 22, and by a gear driven gear 31, power is transferred to output shaft 33, and exported by output shaft 33；
3) operation principle of two gear clutches is identical with the operation principle of an above-mentioned gear clutch, does not repeats them here；
4) accompany examination case to be combined by 1 gear clutch 24 or two gear clutches 25 combine, it is achieved raising speed or reduction of speed, change the power input state from workpiece so that its output speed or torque are unlikely to the scope that can bear beyond load motor.
The beneficial effects of the present invention is: 1) versatility is good, and solve electric closure gearbox testrigs and accompany the present situation of examination gearbox without Special Automatic gearshift；2) effectively reduce the installed capacity of testing equipment load motor, make equipment construction cost, power consumption, maintenance cost reduce；3) gearbox cover plate and the gearbox front shroud of accompanying examination gearbox are removable, oil circuit external filter, and assembling is convenient with trouble hunting；4) accompany the lower partition hollow out in examination tank shell, put at the bottom of oil filter, can effectively eliminate the bubble of inlet port, prevent Hydraulic Station from producing pressure oscillation, cause the clutch abnormal or premature wear of work；5) without devices such as synchronized, selector forks, shift gears noiseless, impact, it is effectively reduced the shift shock infringement to other parts of equipment, improves the service life of equipment；6) losing without slip power, caloric value is little, and energy recovery rate is high, and mechanical loss is little；7) oil circuit control has self-cleaning function, extends the service life accompanying examination case transmission oil, can be prevented effectively from because oil pollution causes the premature wear fault such as bearing, gear；8) control mode is simple, reliable, according to gear needs, directly controls corresponding magnetic valve and obtains electric and dead electricity, eliminates mechanical changeover and accompanies complicated gearshift and the control system thereof of examination case, completely eliminates the situation accompanying examination gearbox shifting not in place.
Embodiment described above is only to be described the preferred embodiment of the present invention; not the scope of the present invention is defined; on the premise of designing spirit without departing from the present invention; various deformation that technical scheme is made by those of ordinary skill in the art and improvement, all should fall in the protection domain that claims of the present invention determines.

Claims (6)

  1. null1. examination gearbox is accompanied in a transmission test self shifter，It is characterized in that: include gear box casing assembly (1)、Hydraulic clutch assy (2)、Output shaft assembly (3) and hydraulic system，Described hydraulic clutch assy (2) and output shaft assembly (3) are fixed in gear box casing assembly (1)，Described hydraulic system provides pressure oil to hydraulic clutch assy (2)，Make hydraulic clutch assy (2) control clutch by the foundation of oil pressure with off-load and separate combination to realize gearshift，And output power to output shaft assembly (3)，Described gear box casing assembly (1) includes accompanying examination tank shell (11)、Gearbox front end-plate (12) and gearbox cover plate (13)，Described examination tank shell (11) of accompanying includes base plate (111)，Before being vertically welded with on described base plate (111)、After、Left、Right steel plate (112、113、114、115)，A described left side、Right steel plate (114、115) dividing plate (14) being perpendicular to both it is additionally provided with between，Before described dividing plate (14) is parallel to、Rear steel plate (112、113)，And leave gap between dividing plate (14) and base plate (111)，Described dividing plate (14) will accompany examination tank shell (11) to be divided into first、Second area (A、B)，Described first area (A) is integrated with transmission oil storage tank，Hydraulic clutch assy (2) and output shaft assembly (3) it is fixed with in described second area (B)，Described gearbox front end-plate (12) is fixed on by screw accompanies in examination tank shell (11)，Before described gearbox cover plate (13) is arranged on、After、Left、Right steel plate (112、113、114、115) top.
  2. Examination gearbox is accompanied in transmission test self shifter the most according to claim 1, it is characterised in that: it is provided with oil pump (42), air filter (61), liquid level gauge (62), oil adsorption filter (46), oil suction joint (63) and purge cock (64) in described first area (A).
  3. Examination gearbox is accompanied in transmission test self shifter the most according to claim 2, it is characterized in that: described hydraulic system includes the transmission oil storage tank (41) being sequentially connected by pipeline, oil pump (42), filter (43), valve plate (44), first solenoid directional control valve (45), the oil-in of described oil pump (42) is connected with transmission oil storage tank (41) by oil adsorption filter (46), the oil-out of oil pump (42) is connected with filter (43) by check valve (47), the outlet of filter (43) is connected with the P mouth of the first solenoid directional control valve (45), the A of the first solenoid directional control valve (45), B mouth keeps off with 1 respectively, 2 gear clutches are connected, the T mouth of the first solenoid directional control valve (45) is individually connected with transmission oil storage tank (41).
  4. Examination gearbox is accompanied in transmission test self shifter the most according to claim 3, it is characterized in that: described hydraulic system also includes the electromagnetism unloading overflow valve being made up of the second solenoid directional control valve (50) and overflow valve (49), the T mouth of described the second solenoid directional control valve (50) is connected with the cooling oil duct of hydraulic clutch assy (2), and the cooling oil duct (29) of hydraulic clutch assy (2) communicates with transmission oil storage tank (41).
  5. Examination gearbox is accompanied in transmission test self shifter the most according to claim 4, it is characterized in that: on the pipeline between described check valve (47) and filter (43), bypass has the branch road arranging safety valve (48), described safety valve (48) its set pressure is higher than overflow valve (49).
  6. nullExamination gearbox is accompanied in transmission test self shifter the most according to claim 1，It is characterized in that: described hydraulic clutch assy (2) includes clutch shaft assembly (21)，Described clutch shaft assembly (21) is provided with a gear driving gear (22)、Two keep off driving gear (23) and keep off driving gear (22) with one respectively、Gear clutch (24) and two that two gears driving gear (23) match keeps off clutch (25)，Described gear clutch (24) and two gears clutch (25) include partition (51) respectively、Friction plate (52)、Piston assembly (53) and spring (54)，Described gear driving gear (22) and two gears driving gear (23) pass through needle bearing (55) empty set respectively on clutch shaft assembly (21)，And one gear driving gear (22) and two gears driving gear (23) connected with the friction plate (52) of gear clutch (24) and two gears clutch (25) by spline respectively，The partition (51) of one gear clutch (24) and two gears clutch (25) is connected with clutch shaft assembly (21) by teeth groove，Described partition (51) and friction plate (52) interval are arranged，Described piston assembly (53) is sheathed on clutch shaft assembly (21) and above and uses sealing ring (56) to seal，Piston assembly (53) and clutch shaft assembly (21)、Sealing ring (56) forms a confined space，Under the effect of oil pressure and spring (54)，Piston assembly (53) moves left and right，Described piston assembly (53) is provided with controls valve，Described output shaft assembly (3) includes output shaft (33)，Described output shaft (33) is provided with gear driven gear (31) and two gears driven gear (32) being meshed with gear driving gear (22) and two gears driving gear (23).
CN201410308126.5A 2014-07-01 2014-07-01 Examination gearbox is accompanied in transmission test self shifter Active CN104074968B (en)

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CN104390002B (en) * 2014-11-19 2016-08-31 无锡金田元丰科技股份有限公司 Wet type two gear automatic speed variator
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CN202048159U (en) * 2011-05-12 2011-11-23 安徽合力股份有限公司 Hydraulic transmission equipped with pump mechanism for 2-3.5 ton hydraulic forklift
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CN103543009B (en) * 2013-08-22 2017-03-29 浙江中柴机器有限公司 A kind of change speed gear box test-bed
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CN203627765U (en) * 2013-12-13 2014-06-04 杭州发达齿轮箱集团有限公司 Mechanical transmission case capable of buffering transmission
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