Power takeoff mechanism (versions)

FIELD: transport engineering.

SUBSTANCE: power takeoff case in all-wheel-drive vehicles is mounted in separate housing, being installed on chassis frame on its own suspension brackets between gearbox and transfer case and is connected through propeller shaft with flange of gearbox drive shaft and through second propeller shaft, with transfer case. According to second designed version, power takeoff case is also mounted in separate housing and installed on chassis frame on its own suspension brackets between gearbox and rear axle of vehicle, being connected by propeller shaft with flange of gearbox main shaft and by second propeller shaft, with rear axle of vehicle. Drive shaft of power takeoff case is made sectional and is provided with engagement clutch connecting members of shaft. And clutch for connection of driven gear with shaft is arranged on output shaft.

EFFECT: improved reliability and simplified design of power takeoff mechanism.

3 cl, 4 dwg

 

The invention relates to vehicles that use the PTO for different mechanisms.

Known PTO, described in the book Medvedkov VI and other “KAMAZ-5320 and Ural-4320. A training manual. M., 1981, page 300, 301, ed. USSR DOSAAF. The mechanism includes PTO, consisting of a housing in which the bearings installed shaft clutch activation mechanism of inclusion and oil pump. The PTO is made with the primary shaft transfer case through the sliding clutch included. The disadvantage of this mechanism is its significant size, weight and sophisticated design.

Known for the PTO to PTO gearbox and drive various units described in the above book, pp. 299-300. The mechanism includes PTO attached to the flange of the hatch gearbox, gear train reverse gear which is in constant engagement leading gear box PTO. The disadvantage of this mechanism is that it has limited functionality, because by design there is only one output shaft, which allows you to connect only one additional unit.

Known PTO presented in the PA is the port on the PTO JSC “RIAT (see Appendix to the application form). The mechanism includes PTO, containing respectively, resistant and slotted bushing, intermediate and driven gears, clutch, slave and output shafts, pneumatic cylinder and the crankcase cover, resistant and slotted sleeve which is installed on the output shaft of the gearbox, while the crankcase PTO attached to the rear end of the gearbox, on the spline hub through a bearing mounted leading gear, intermediate gear through the bearings installed on the axle and the driven gear is fixed on a driven shaft through bearings mounted on the crankcase and the crankcase cover, clutch installed on the splined sleeve and through the plug is connected with the rod of the pneumatic cylinder. The disadvantage of this mechanism is that it requires significant revision of the gearbox, leading to changes in structure and reduced reliability of the device due to appearing additional radial loads on the output shaft of the gearbox at the end of the cantilever part and, as a consequence, the shaft bearing mounted in the gearbox housing.

Known PTO, described in St. No. 6370, “Universal towing vehicle,” CL 60 To 17/28, h. 06.05.97, op. 16.04.98.

The mechanism includes serially connected between a drive motor, Ceplene, gearbox and at least one transfer case to drive the bridges, and power to drive the front - and zadorspain shaft PTO, includes PTO, mounted on the gearbox in the area of technological window and having a shaft with a pinion kinematically connected via the specified process window with one of the gears of the gearbox, one end via at least one drive shaft connected with zadorspain PTO, and the other is associated with prednisalone PTO shaft via the driven gear clutch to connect and disconnect the shaft selection power shaft gearbox PTO, while the coupling with the governing body mounted in a separate housing mounted on the body of the box of selection of power in the area of the bearings protruding end of the shaft of this box and is made with a ring clamp for preload of the bearing. The disadvantage of this mechanism is the complexity of its design.

The closest in technical essence to the claimed is a PTO that is described in paragraph No. 2137620, “PTO”, CL 60 To 17/28, h. 27.03.97, op. 20.09.99, and selected as a prototype. The mechanism includes a three-shaft to robco PTO, comprising a housing, a pinion gear, is placed in the bearings of the output shaft, one output shaft kinematically connected with the leading gear through an intermediate gear mounted on the axis in the housing box PTO, mounted on the rear end of the gearbox with the formation of a closed volume, a means of power and end the gears placed at the ends of the output shafts elements for connection with complementary mechanisms, and leading gear is the primary link of the kinematic chain of the box PTO and is connected with the secondary shaft, which is the final link in the kinematic chain transmission element for connecting transmission with transmission car mounted coaxially with the output shaft and kinematically connected with him through pinion gear box PTO. There is an element for connecting transmission with a transmission of the vehicle, coaxially with the output shaft of the gearbox and represents the fender. The disadvantage of this mechanism is that it requires significant revision gearbox and design changes (run power through the gear mounted on the console of the secondary shaft of the gearbox), resulting in lower reliability of the unit due to oshikawa additional radial loads on the output shaft of the gearbox at the end of the cantilever part and, as a consequence, on the bearing shaft mounted in the gearbox housing.

The purpose of the claimed invention in both cases is to increase the reliability of the unit by reducing additional loads on the output shaft of the gearbox while simplifying the structure.

This goal is achieved by the fact that

in the first embodiment, in the PTO, including mounted on the vehicle chassis and connected to the engine, gearbox and PTO, representing three-shaft gearbox, kinematically associated with the secondary shaft of the gearbox, ACCORDING to the INVENTION in four wheel drive to enable transmission is in neutral used transfer case, PTO mounted in a separate housing mounted on the chassis frame independently in their own suspension brackets between the gearbox and transfer box and connected through a drive shaft, which represents the dual swivel coupling, subject to balancing with flange drive shaft gearbox and through the second propeller shaft from the transfer case;

in the second embodiment, in the PTO, including mounted on the chassis of a road vehicle and connected to the engine, gear box and a box of selection of power the STI, representing three-shaft gearbox, kinematically associated with the secondary shaft of the gearbox, ACCORDING to the INVENTION PTO mounted in a separate housing mounted on the frame Chasse independently in their own suspension brackets between the gearbox and the rear axle of the vehicle and is connected via a cardan shaft, which represents the dual swivel coupling, subject to balancing with flange output shaft of the gearbox and through the second drive shaft from the rear axle of the vehicle, thus leading shaft PTO made composite and has posted the clutch switching, connecting the component parts of the shaft and on the output shaft has a clutch for connection of the driven gear with the shaft.

Placing the box of selection of power in a separate building and installing it directly on the chassis frame independent suspension brackets when you connect it to the drive shaft through the drive shaft, which represents the dual swivel coupling, subject to balancing, on the one hand with the flange of the transmission, and on the other side - flange of the transfer case in four-wheel drive vehicle in the first embodiment and with the flange of the rear axle of a road vehicle in the second embodiment, when performing the drive shaft box selection integral with the clutch switching on it, connecting the hours and the shaft, doesn't require any modification of the transmission and eliminates all radial load transmission, which increases the reliability of the unit with a fairly simple design.

In comparison with the prototype of the proposed PTO has novelty in comparison with the prototype, differing from it

- the first option for all-wheel drive car with such essential features as placing the box of selection of power in a separate enclosure and install it in the chassis frame on the independent brackets between the transfer case and transmission and connect it to the solid drive shaft with the flange of the secondary shaft of the gearbox and flange shaft of the transfer case through the drive shaft, which represents the dual swivel coupling, subject to balancing, which provides collectively achieve the specified result;

in the second embodiment, for a road car with such essential features as placing the box of selection of power in a separate enclosure and install it in the chassis frame on the independent brackets between the rear axle and gearbox and connect it to the composite drive shaft with the flange of the secondary shaft of the gearbox and flange of the rear axle through the drive shaft, which represents the dual hinge coupling subjected balancing, and performing the drive shaft of the box show the RA capacity compound and having placed on the master and slave shafts couplings enable, providing collectively achieve the specified result.

The applicant did not know the technical solutions with these distinctive features in both versions, providing collectively achieve the specified result, he felt, therefore, that the proposed solution meets the criterion of “inventive step”.

Declare the PTO in the first and second embodiments, it may find wide application in the automotive industry, namely, respectively, in all-wheel drive and road vehicles, and therefore meets the criterion of “industrial applicability”.

The claimed invention is illustrated in the drawings, there is shown

figure 1 - arrangement in four wheel drive the PTO in the first embodiment;

figure 2 - the scheme of arrangement in road car PTO in the second embodiment;

figure 3 - General view of the PTO in the first embodiment;

figure 4 - General view of the PTO in the second embodiment.

Declare the PTO in the first embodiment (Fig 1) contains mounted on the chassis 1 of the vehicle and sequentially connected between a drive motor, a clutch (drawings not on asana and not labeled), box 2 gear box 3 PTO and the transfer case 4. When this box 3 power connected through intermediate cardan shafts 5 on the one hand with box 2 transmission, on the other hand with the transfer box 4.

Structurally, the PTO in the first embodiment (for four-wheel drive) is shown in figure 3 and includes a housing 6 mounted on its suspensions directly on the chassis frame 1. The driving shaft 7 with a pinion 8 mounted on a sliding sleeve and connected with the clutch 9 has on both ends of the flanges 10 and 11. With the pinion 8 is in constant engagement of the intermediate gear 12 mounted on shaft 13. With the intermediate gear 12 in constant engagement is driven gear 14 rigidly mounted on the output (driven) shaft 15 which has a flange 16 for power.

In the second embodiment, (2) the PTO includes installed on the chassis 1'car and sequentially connected between a drive motor, a clutch (not shown and not labeled), box 2’ of the gear box 3’ PTO and rear axle 4’. When this box is 3’ power are connected via an intermediate drive shafts 5’ on one side with a box 2’ transmission, on the other hand - with the rear axle 4’.

The con is tructive the PTO in the second embodiment, the (road car) is shown in figure 4 and includes a housing 6’, fixed suspensions directly on the chassis frame 1’. Drive shaft 7’ with a pinion 8’, rigidly mounted on the sliding sleeve and connected with the clutch 9’made of composite and has at both ends of the flanges 10’ and 11’. The clutch 9’ is used for joining the parts of the shaft 7’ to transmit torque to the rear axle 4’. With the pinion 8’ is in constant engagement of the intermediate gear 12’mounted on the shaft 13’. With the intermediate gear 12’ in constant engagement is driven gear 14’mounted on a sliding sleeve and connected with the coupling 17 on the output (driven) shaft 15’, which has a flange 16’ for PTO. Through the spline on the output shaft mounted clutch 17, the axial displacement of which provides a connection-disconnection of the gear 14’ with the shaft 13’.

If necessary, on the box PTO various combinations of elements for connection with additional mechanisms (not shown). In particular:

one of the elements at one end of the output shaft can be made in the form of a flange for connection with the secondary shaft, and on the opposite - in the form of a slotted shank for connection with a gear pump;

on one end of the output shaft in the form of a flange for connection with the propeller shaft, and across the lagoon to the false in view of the adapter-adapter for connection with axial-piston pump;

- at opposite ends of the output shaft can be made adapters-adapters for connection with axial-piston pumps;

on one end of the output shaft can be performed adapter-adapter for connection with axial-piston pump, and the other slotted shank for connection with a gear pump.

Declare the PTO in the first embodiment operates as follows.

With the transfer case 4 axles of the vehicle are set in the neutral position. Turning on the power to the output shaft 15 and the transmission of the car is at idle gear box 3.

When you enable one of the selected transmission gear box 2 (rotation is transmitted from the motor rotates the output shaft gear box 3 and its flange (the drawings are not marked and not shown) through the drive shaft 5, its rotation is transmitted to the box 3 PTO, with the output shaft 15 which 100% of the capacity is taken on additional mechanisms.

By placing the box of selection of power in a separate building on their suspensions and its connection with the intermediate drive shafts from the gearbox and transfer box is created kinematic chain of the boron power, do not create additional loads on the gearbox, which increases the reliability of the unit as a whole.

In the second embodiment, the PTO works as follows.

Turning on the power to the output shaft 15’ and car transmission (transmission of rotation to the flange 10’) is carried out with a broken gearbox, when the drive shaft 7’ is not rotating. For transmitting rotation to the flange 10’ serves compressed air into the working cavity of the inclusion mechanism of transmission. Leading gear 8’ and slotted shank flange 10’ engages. For transmitting rotation to the output shaft 15’ serves compressed air into the working cavity of the pneumatic cylinder mechanism include PTO, clutch 17 which is engaged with the crown of the driven gear 14. Thus rotation is transmitted from the secondary shaft of the gearbox through being in constant engagement leading 8’, intermediate 12’ and the driven gear 14. When you enable one of the selected gear box (rotation is transmitted from the motor rotates the drive shaft 7’ is rigidly secured on the pinion 8’. When the clutch 9’ flange 10’ is rotated, transmitting torque to the transmission of the vehicle. Conversely, when the clutch 9’ is disabled, the transmission is not working, the car is stationary. The output shaft 15’ is rotated when the power is Noah the clutch 17, transmitting torque to additional mechanisms, if it does not rotate the flange 10’, the transmitting rotation to the transmission, the output shaft is transmitted 100% of the power from the output shaft of the transmission.

Placing the box of selection of power in a separate building on independent suspensions and its connection with the intermediate drive shafts from the gearbox and the rear axle of the vehicle does not create additional stress on the transmission, increasing the reliability of the unit.

In comparison with the prototype of the proposed PTO in both cases reduces the load on the output shaft of the gearbox and makes the machine more reliable.

1. The PTO, including mounted on the vehicle chassis and connected to the engine, gearbox and PTO, representing three-shaft gearbox, kinematically associated with the secondary shaft of the gearbox, characterized in that four-wheel drive vehicle to enable the transmission is in neutral used transfer case, PTO mounted in a separate housing mounted on the chassis frame independently in their own suspension brackets between the gearbox and transfer box and connected through a drive shaft, which represents the dual swivel coupling, subjected to the Yu balancing, with the flange of the drive shaft of the gearbox, and a second propeller shaft from the transfer case.

2. The PTO, including mounted on the chassis of a road vehicle and connected to the engine, gearbox and PTO, representing three-shaft gearbox, kinematically associated with the secondary shaft of the gearbox, wherein the PTO is mounted in a separate housing mounted on the chassis frame independently in their own suspension brackets between the gearbox and the rear axle of the vehicle and is connected via a cardan shaft, which represents the dual swivel coupling, subject to balancing with flange output shaft of the gearbox and through the second drive shaft from the rear axle of the vehicle, thus leading the shaft PTO made composite and has posted the clutch switching, connecting the component parts of the shaft and on the output shaft has a coupling for connecting driven gear with the shaft.



 

Same patents:

FIELD: transport engineering.

SUBSTANCE: invention relates to vehicles, preferably, tractors, equipped with power takeoff mechanism with independent drive. Proposed power takeoff mechanism contains drive shaft, bushing connected with drive shaft and arranged in groove of vehicle engine crankshaft, and pins installed in holes and connecting bushing with crankshaft. Novelty is that holes for pins are made in place of contact of bushing and crankshaft groove and are formed by longitudinal recesses on contact surfaces of bushing and groove. Engine flywheel is secured directly on end face of crankshaft.

EFFECT: simplified design of mechanism, improved manufacturability and reduced overall dimensions.

2 dwg

The pto // 2236358
The invention relates to the transport industry, in particular to the mechanisms of power that provide tractors and agricultural machines and implements using the power unit of the tractor

The invention relates to transport machinery and can be used in transmissions for wheeled vehicle

The device pto // 2180292
The invention relates to the field of engineering

The invention relates to vehicles that use the PTO for different mechanisms, in particular for the drive of the mounted equipment in municipal and road-building machines

The invention relates to a transport engineering

The invention relates to tractor engineering

The invention relates to the field of tractor engineering, in particular for tractors for agricultural purposes with all the leading bridges

Pto // 2137620
The invention relates to mechanical engineering, in particular to gears for a message rotational motion

The invention relates to the field of transport engineering, in particular to the mechanisms PTO tractors and similar machines

FIELD: transport engineering.

SUBSTANCE: invention relates to vehicles, preferably, tractors, equipped with power takeoff mechanism with independent drive. Proposed power takeoff mechanism contains drive shaft, bushing connected with drive shaft and arranged in groove of vehicle engine crankshaft, and pins installed in holes and connecting bushing with crankshaft. Novelty is that holes for pins are made in place of contact of bushing and crankshaft groove and are formed by longitudinal recesses on contact surfaces of bushing and groove. Engine flywheel is secured directly on end face of crankshaft.

EFFECT: simplified design of mechanism, improved manufacturability and reduced overall dimensions.

2 dwg

FIELD: transport engineering.

SUBSTANCE: power takeoff case in all-wheel-drive vehicles is mounted in separate housing, being installed on chassis frame on its own suspension brackets between gearbox and transfer case and is connected through propeller shaft with flange of gearbox drive shaft and through second propeller shaft, with transfer case. According to second designed version, power takeoff case is also mounted in separate housing and installed on chassis frame on its own suspension brackets between gearbox and rear axle of vehicle, being connected by propeller shaft with flange of gearbox main shaft and by second propeller shaft, with rear axle of vehicle. Drive shaft of power takeoff case is made sectional and is provided with engagement clutch connecting members of shaft. And clutch for connection of driven gear with shaft is arranged on output shaft.

EFFECT: improved reliability and simplified design of power takeoff mechanism.

3 cl, 4 dwg

Power train // 2268167

FIELD: transport engineering; amphibian vehicle power train.

SUBSTANCE: proposed power includes engine with crankshaft, clutch or fluid coupling and transmission installed in line with engine crankshaft. Transmission has input shaft set into rotation from flywheel. Moreover power train contains additionally power takeoff unit designed to drive power takeoff shaft which is made for transmission of power to propulsion set intended for moving vehicle over water. Power takeoff unit has drive device secured on end of crankshaft on which flywheel is mounted. Drive device is made for transmission of power to power takeoff shaft.

EFFECT: improved layout of power train.

19 cl, 8 dwg

FIELD: mechanical engineering.

SUBSTANCE: proposed power gear train includes engine, transmission located in line with it and intermediate power takeoff unit located between engine and transmission; output of power takeoff unit may transmit power to unit of drive working during motion on water; it is mounted in rear part of transport facility by means of shaft. Transmission output is designed for transmission of power to differential mounted in rear part of transport facility. Power takeoff unit is located behind transmission and shaft passes below or through engine oil sump.

EFFECT: enhanced arrangement of power gear train.

10 cl, 2 dwg

FIELD: transport engineering.

SUBSTANCE: proposed transmission 3 for amphibian vehicle contains engine 12, gearbox 14 and differential 16. Axis of crankshaft of engine 12 can coincide with longitudinal axis 32 of vehicle or it can be parallel to longitudinal axis. Gearbox 14 is installed crosswise relative to engine perpendicular to engine. Gearbox can be manual, with successive change of gear ratio, automated, manual automatic or stepless. Drive shaft 42 of transmission set into motion by engine crankshaft drives propulsion unit 48 of vehicle, and gearbox 14. Engine can be displaced from central line of vehicle.

EFFECT: provision of transmission for amphibian vehicle in which conventional cross automobile transmission is used adaptable for amphibian vehicle.

10 cl, 3 dwg

Clutch // 2291791

FIELD: mechanical engineering; transport engineering.

SUBSTANCE: invention relates to tractors and it can be used in mechanisms provided with clutch with power takeoff to transmission and power takeoff shaft or other auxiliary mechanism. Clutch has cover plate secured on flywheel, pressure plate connected with cover plate by tangential plates, driven disk with hub connected to said disk which is installed between pressure plate and flywheel, diaphragm spring installed on cover plate, and coupling plate with hub. Coupling plate has radial lobes and it is arranged between diaphragm spring and pressure plate, being connected by ends of lobs with cover plate. Lobes of coupling plate are arranged in posts made in cover plate.

EFFECT: reduced axial size of clutch, improved manufacturability and facilitated centering of hub of coupling plate.

6 cl, 4 dwg

FIELD: mechanical engineering.

SUBSTANCE: invention relates to power takeoff for vehicle auxiliaries. Proposed power takeoff has case, hollow drive shaft, drive gear made integral with drive shaft or secured on said shaft, idler gear, driven shaft and driven gear made integral with driven shaft or secured on said shaft, and engagement mechanism. Front end of drive shaft is connected with engine flywheel by means of splined and flexible disk. Clutch mechanism is installed on rear end of drive shaft, said mechanism being installed in power takeoff case.

EFFECT: provision of reliable and simple design power takeoff, simplified of gearbox and clutch.

1 dwg

FIELD: road machinery.

SUBSTANCE: proposed machine contains prime mover with cab and engine 3 which is connected with mechanical gearbox 4 through clutch 5 provided with clutch release pedal 6. Power takeoff box 15 is mechanically coupled with gearbox 4. Mounted equipment is provided with power coupling with gearbox 4. Said coupling is made in form of hydraulic system including hydraulic pump 17 driven by power takeoff box 15. To change over gearbox 4 of prime mover clutch 5 is released by pressing on pedal 6. This breaks mechanical coupling between engine 3 and gearbox 4. Simultaneously with release of clutch 5, bracket of pedal 6 closes electric switch of hydraulic valve 20, and power coupling between gearbox 4 and mounted equipment is interrupted after change over of gears, pedal 6 is returned in upper position and clutch 5 is engaged. Simultaneously, bracket breaks contacts of electric switch, thus restoring power coupling between gearbox 4 and mounted equipment.

EFFECT: improved reliability of gearbox.

2 cl, 6 dwg

FIELD: transport.

SUBSTANCE: all-wheel drive vehicle power train incorporates the main and auxiliary transfer boxes with the auxiliary transfer box output shafts being linked, via drive lines, with the third and rear driving axle differential gears and the said box input shaft being connected with the main transfer box output shaft of the front driving axle differential gear drive. The main transfer box is arranged between the front and the third driving axles attached to the side member in the area of the medium traverse, while the auxiliary transfer box is located between the third and rear driving axles attached, at an angle to the side member, to the auxiliary transverse lower surface jointed to the side members, the said lower surface axis passing at an angle to the side members other than a right angle. All axles feature identical design and overall sizes. The rear driving axle differential gear is shifted towards one side member relative to differential gears of the other axles shifted towards the other side member. Note that all power train assembly units are arranged below the rectangular frame top surface.

EFFECT: higher performances.

1 dwg

FIELD: mechanics.

SUBSTANCE: proposed method and system are peculiar in that motion transfer element (5) is selected with such a diametre which allows it to be located on preset first center-to-center distance from second motion transfer element (23) equal to said first center-to-center distance between first and second motion transfer elements (21, 23). Support holder (3) incorporates partially motion transfer element (5) and one intermediate element (37) arranged between flange (31) and gearbox (1).

EFFECT: simplified design to produce various gear ratios.

6 cl, 5 dwg

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