CN104265839A - Power takeoff and power takeoff assembly - Google Patents

Power takeoff and power takeoff assembly Download PDF

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Publication number
CN104265839A
CN104265839A CN201410482943.2A CN201410482943A CN104265839A CN 104265839 A CN104265839 A CN 104265839A CN 201410482943 A CN201410482943 A CN 201410482943A CN 104265839 A CN104265839 A CN 104265839A
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CN
China
Prior art keywords
shaft
gear
gearshift
power take
flexible axle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201410482943.2A
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Chinese (zh)
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CN104265839B (en
Inventor
张翔
王凯峰
李喜鹏
张纬苏
张荣瑾
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Anhui Jianghuai Automobile Group Corp
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Anhui Jianghuai Automobile Group Corp
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Priority to CN201410482943.2A priority Critical patent/CN104265839B/en
Publication of CN104265839A publication Critical patent/CN104265839A/en
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Publication of CN104265839B publication Critical patent/CN104265839B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H1/00Toothed gearings for conveying rotary motion
    • F16H1/02Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/20Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
    • F16H1/22Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/02Gearboxes; Mounting gearing therein
    • F16H57/023Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H63/00Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30Constructional features of the final output mechanisms
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H2710/00Control devices for speed-change mechanisms, the speed change control is dependent on function parameters of the gearing

Abstract

The invention discloses a power takeoff and a power takeoff assembly. The power takeoff comprises a separation shaft, an output shaft, a transfer shaft, a shifting fork, a gear sleeve, an output gear and a transfer gear. The output shaft is connected with a casing in a rotating mode, the output gear sleeves the output shaft in an idle state, the gear sleeve is connected with the output shaft in a sliding mode, and the output gear is provided with combination teeth matched with an inner spline of the gear sleeve. The transfer shaft is fixedly installed in the casing, the transfer gear is connected with the transfer shaft in a rotating mode and meshed with the output gear, the separation shaft is connected with the casing in a sliding mode, and the shifting fork is fixedly installed on the separation shaft and fixedly connected with the gear sleeve. The power takeoff assembly comprises the power takeoff, a shifter, a shifting flexible shaft and a rocking arm. The rocking arm is in pivot connection with a rocking arm support, two ends of the shifting flexible shaft are connected with a linear motion output portion and the rocking arm of the shifter, and the rocking arm is connected with the separation shaft. The shifting flexible shaft is adopted to control the corresponding power takeoff, an air source is saved, and the structure of two-way air controlled air path and various cylinders is achieved, so that the power takeoff and the power takeoff assembly have the advantages of being simple in structure and safe in use.

Description

A kind of power take-off and power take-off assembly
Technical field
The present invention relates to power take-off technical field, particularly relate to a kind of power take-off assembly adopting gearshift flexible shaft manipulation power take-off.
Background technique
The upper dress part with dedicated function has mainly been reequiped in the difference of special purpose vehicle and general-utility car, can complete some special transport and operation function.The upper dress part of most special purpose vehicle is all for power source with the motor of automobile chassis self, by power take-off actuation gear oil hydraulic pump, vacuum pump, plunger pump, light oil oil hydraulic pump, self-priming oil hydraulic pump, water pump, air compressor etc., thus for dumping car, refuelling truck, milk barrow, refuse collection vehicle, suction-type sewer scavenger, support the use with many special purpose vehicles such as car crane vehicle, high-altitude operation vehicle, bulk cement truck, breast board derrick cars.As can be seen here, power take-off seems particularly important in the Design and manufacture of special purpose vehicle.
Power take-off generally adopts automatically controlled gas to handle, and when driver opens the solenoid valve on the power take-off control switch connection chassis of setting in operator cabin, power take-off can be made to enter working state, and now pressurized air is by promoting the piston of power take-off cylinder, makes Power output; Otherwise driver makes power take-off quit work by closing power take-off control switch.At this, the usual very severe of the operating mode due to special purpose vehicle, very easily cause power take-off by mistake in running order because the control unit such as Vehicular vibration or solenoid valve lost efficacy, the personnel that cause injure and property loss.At present, the technological means solved this technical problem adopts two-way gas operation control system to control power take-off action, this kind of two-way gas operation control system comprises gas receiver, power take-off cylinder, the neutral gear position cylinder of cylinder cascade is kept off with transmission range, solenoid valve, air filtering regulator, power take-off control switch and neutral position switch, this power take-off control switch is arranged in operator cabin, its on off state is controlled by driver, when needs power take-off works, driver needs this power take-off control switch is closed, to export the power take-off enable signal being used for Controlling solenoid valve to gearbox controller, this neutral position switch is through the normal electricity of pull-up resistor access, the neutral gear position signal of Controlling solenoid valve is used for gearbox controller through neutral position switch output.Air outlet one branch road of gas receiver is communicated with the suction port of air filtering regulator, pressurized air through air filtering regulator filter and step-down after to the two H air valve air feed on transmission assembly, namely the air outlet of air filtering regulator is communicated with the suction port of two H air valve, another branch road is communicated with through the suction port of solenoid valve with neutral gear position cylinder, being pushed to cylinder piston transmission range being kept off cylinder by the cylinder piston of neutral gear position cylinder under the state connected at solenoid valve makes secondary box of gearbox be on the position of neutral, the suction port of this neutral gear position cylinder is communicated with the gas port of putting into gear of power take-off cylinder, by the pressurized air of non-step-down the cylinder piston of power take-off cylinder to be pushed to the state making power take-off be in put into gear power taking under the state connected at solenoid valve, the moving back of the high gear relief opening of above-mentioned pair of H air valve and power take-off cylinder is kept off gas port and is communicated with, and that thinks power take-off cylinder keeps off the chamber that gas port is communicated with and become the common pressure chamber of always usually pressing with moving back.The working principle of this kind of two-way gas operation control system is: when gearbox controller receives power take-off enable signal and neutral gear position signal, connect solenoid valve, the gas port of putting into gear of the suction port of neutral gear position cylinder and power take-off cylinder is made all to pass into the pressurized air of non-step-down, now, the cylinder piston of neutral gear position cylinder is pushed into and makes secondary box of gearbox be on the position of neutral, the cylinder piston of power take-off cylinder is pushed into state power take-off being in put into gear power taking, as speed-changing lever is now linked into the gear needed for low gear district by driver, namely power take-off enters working state, tooth cover stirred by drive shift fork by the cylinder piston of power take-off cylinder makes tooth cover input gear and hollow shaft are connected as a single entity, make Power output.
According to above explanation, the structure of existing two-way gas operation control system is comparatively complicated and cost is high, and will directly cause power take-off normally to work once source of the gas leaks.
Summary of the invention
The object of the embodiment of the present invention is the above-mentioned defect existed to solve existing employing two-way gas operation control system, the power take-off assembly of the power take-off providing a kind of structure simply can adopt gearshift flexible shaft manipulation and the simple flexible shaft manipulation power take-off and employing is shifted gears of structure.
To achieve these goals, the technical solution used in the present invention is: a kind of power take-off, comprise housing, declutch shaft, output shaft, conduction axis, shift fork, tooth cover, output gear, transfer gear, described output shaft is arranged in described housing rotatably, described output gear empty set is on described output shaft, described tooth cover can be arranged on described output shaft relative sliding, described output gear have the internal spline that overlaps with described tooth suitable in conjunction with tooth; Described conduction axis is fixedly mounted in described housing, and described transfer gear is arranged on described conduction axis rotatably, and is meshed with described output gear; Described declutch shaft is connected with the axial sliding fit of described housing along described output shaft; Described shift fork is fixedly mounted on described declutch shaft, and is fixedly connected with described tooth cover.
Preferably, described power take-off also comprises retaining assembly, described retaining assembly comprises retainer, stopping spring is kept off locking groove with the power taking gear locking groove be all formed on described declutch shaft with being separated, described retainer can be arranged in the mounting hole in described housing relative sliding, described retainer is locked in described power taking gear locking groove or described separation gear locking groove under the effect of described stopping spring, wherein, described declutch shaft moves to the position combined in conjunction with tooth making described retainer be locked on internal spline and the described output gear that the position correspondence in described power taking gear locking groove makes tooth overlap, described declutch shaft moves to and makes retainer be locked on the corresponding position be separated in conjunction with tooth making tooth cover and described output gear, the described position be separated in gear locking groove.
Preferably, described stopper is spheroid, and described power taking gear locking groove is the cambered surface suitable with described spheroid with the described surface being separated gear locking groove.
To achieve these goals, the technical solution used in the present invention is: a kind of power take-off assembly, comprises power take-off and shift control mechanism, and described power take-off is above-mentioned power take-off described in any one; Described shift control mechanism comprises gearshift flexible axle, selector and rocking arm, described rocking arm is connected with rocker arm support pivotable, one end of described gearshift flexible axle is fixedly connected with the straight line motion carry-out part of described selector, the other end is connected with one end of described rocking arm, and the other end of described rocking arm is connected with described declutch shaft.
Preferably, described selector comprises gearshift shell, gearshift main shaft, shift handle, power shift gear and the gearshift tooth bar as described straight line motion carry-out part, described gearshift main shaft is arranged in described gearshift shell rotatably, described power shift gear is fixedly mounted on described gearshift main shaft, described gearshift tooth bar and the sliding connection of described gearshift shell, described gearshift tooth bar is meshed with described power shift gear, and described shift handle is fixedly connected with described gearshift main shaft.
Preferably, described gearshift main shaft is multidiameter shaft, comprise the first shaft part, the second shaft part and the 3rd shaft part that diameter reduces in turn, described gearshift main shaft is arranged in described gearshift shell by the first shaft part rotatably, and described power shift gear is fixedly mounted on described first shaft part in described gearshift shell; Described second shaft part has external splines, and the connecting end of described shift handle has the internal spline suitable with the external splines of described second shaft part, and the connecting end of described shift handle is set on described second shaft part; Described 3rd shaft part has outside thread, and the connecting end of described shift handle is fixed between described first shaft part and described locking nut with coordinating of described 3rd shaft part by locking nut.
Preferably, described gearshift flexible axle comprises front connector, rear joint and flexible axle body, described rear jiont treatment is on the gearshift shell of described selector, described front connector is arranged on flexible shaft bracket, protruding and the described straight line motion carry-out part of one end joint after described of described flexible axle body is connected, stroke limiting structure is stretched out after the prelocalization shoulder that described rear joint inner chamber is formed is configured for limiting the outwardly directed stroke of the relative described rear joint of described flexible axle body with the first backstage terrace that described flexible axle body is formed, the prelocalization shoulder that described rear joint inner chamber is formed is configured for the second backstage terrace that described flexible axle body is formed the retrude reversion degree fixed structure limiting the stroke that the relative described rear joint of described flexible axle body is inwardly retracted, the other end of described flexible axle body is connected through one end of the protruding and described rocking arm of described front connector, the rear locating shoulder that described front connector inner chamber is formed is configured for the first foreground terrace that described flexible axle body is formed the degree fixed structure of going on a journey that protracts limiting the outwardly directed stroke of the relative described front connector of described flexible axle body, and the prelocalization shoulder that described front connector inner chamber is formed is configured for the second foreground terrace that described flexible axle body is formed the front retraction stroke limiting structure limiting the stroke that the relative described front connector of described flexible axle body is inwardly retracted.
Preferably, described flexible axle body comprises the front rod linked together in turn from front to back, front mandrel, raw silk rings pipe assembly, rear mandrel and back link; Form described second foreground terrace between described front rod and described front mandrel, form described first foreground terrace between described raw silk rings pipe assembly and described front mandrel, described front rod is connected through one end pivotable of the protruding and described rocking arm of described front connector; Form described second backstage terrace between described back link and described rear mandrel, form described first backstage terrace between described raw silk rings pipe assembly and described rear mandrel, the protruding and described straight line motion carry-out part of described back link joint after described is fixedly connected with.
Preferably, the outer wall of described rear joint has the neck cervical part of esophagus forming annular slot, together with described rear joint to be connected and fixed with described gearshift shell by the cooperation of neck cervical part of esophagus and mounting hole on described gearshift shell.
Preferably, the outer wall of described front connector has thread section, described front connector through the through hole that described flexible shaft bracket is arranged, and is fastened on described flexible shaft bracket by the Structural lock that the both sides at described flexible shaft bracket are respectively coordinated with described thread section by a locking nut.
Beneficial effect of the present invention is: power take-off structure of the present invention can adopt gearshift flexible axle to drive the mode of declutch shaft action realize power taking and be separated control, this makes power take-off assembly of the present invention can save source of the gas, realizes the structures such as the gas circuit of two-way gas maneuvering and control and various cylinders, therefore, power take-off assembly of the present invention has the advantage of the simple and use safety of structure.
Accompanying drawing explanation
Fig. 1 shows the structural representation of a kind of mode of execution according to power take-off assembly of the present invention;
A kind of sectional view implementing structure that Fig. 2 is power take-off shown in Fig. 1;
Fig. 3 is the right elevation of power take-off shown in Fig. 2;
A kind of partial cutaway plan view implementing structure that Fig. 4 is selector shown in Fig. 1;
Fig. 5 is the plan view of selector shown in Fig. 1;
Fig. 6 is a kind of partial cutaway plan view implementing structure of the flexible axle of gearshift shown in Fig. 1;
Fig. 7 shows a kind of linkage structure shown in Fig. 6 shown in gearshift flexible axle and Fig. 4 between selector;
Fig. 8 is a kind of perspective view implementing structure of the main shaft of gearshift shown in Fig. 4;
A kind of cross sectional representation implementing structure that Fig. 9 is the pipe assembly of raw silk rings shown in Fig. 6.
Description of reference numerals:
1-selector; 10-shifts gears tooth bar;
101-tapped hole; 11-shifts gears main shaft;
1101-first shaft part; 1102-second shaft part;
1103-the 3rd shaft part; 12-power shift gear;
13-shifts gears shell; 131-mounting hole;
121-shift handle; 122-handle plastic cap;
15-elastic washer; 16-adjusts pad;
17-pad; 18-locking nut;
2-power take-off; 21-housing;
22-resilient key; 23-transfer gear;
24-adjusts pad; 25,213-seal ring;
26-conduction axis; 27-needle bearing;
28,227-bearing; 29-bearing sleeve;
210-bearing cap; 214-declutch shaft;
214a-is separated gear locking groove; 214b-power taking gear locking groove;
215-blanking cover; 216-bolt;
218-asbestos-packing gasket; 219-plug screw;
Stopping spring of 220-; 221-retainer;
222-shift fork; 225-elastic cylindrical pin;
229-oil sealing; 230-connecting plate;
233-tooth cover; 234-output gear;
3-shifts gears flexible axle; 31-locking nut;
32-front rod; Mandrel before 33-;
35-front connector; 351-thread section;
36-raw silk rings pipe assembly; Joint after 37-;
371-neck cervical part of esophagus; Mandrel after 38-;
39-back link; 4-flexible shaft bracket;
5-rocking arm; 6-rocker arm support;
7,8-locking nut; 361-internal lining pipe;
362-raw silk rings pipe; 363-crust.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
As shown in Figure 1, power take-off assembly of the present invention comprises power take-off 2 and shift control mechanism, this shift control mechanism comprises gearshift flexible axle 3, selector 1 and Rocker arm 5, Rocker arm 5 is connected with rocker arm support 6 pivotable, gearshift one end of flexible axle 3 is fixedly connected with the straight line motion carry-out part of selector 1, the other end is connected with one end of Rocker arm 5, to make driver when manually-operable selector 1, straight line motion carry-out part by selector drives gearshift flexible axle 3 to complete fore and aft motion, and then control the pivoting point swing of Rocker arm 5 between rocker arm support 6, and the other end of Rocker arm 5 is connected with the declutch shaft of power take-off 2, the swing of Rocker arm 5 just can be converted to the corresponding actions of the declutch shaft of power take-off 2 by this.As shown in Figures 2 and 3, this power take-off 2 comprises housing 21, declutch shaft 214, output shaft 228, conduction axis 26, shift fork 222, tooth cover 233, output gear 234, transfer gear 23, this output shaft 228 is arranged in housing 21 by bearing 28 and bearing 227 rotatably, the outer ring of bearing 28 is located by the bearing cap 210 be fixedly connected with housing 21, the inner ring of bearing 28 is fixedly connected with output shaft 228 by bearing sleeve 29, the outer ring of bearing 227 is located by the connecting plate 230 be fixedly connected with housing 21, between this connecting plate 230 and output shaft 228, oil sealing 229 can be installed, to lubricate output shaft 228, output gear 234 empty set is on output shaft 228, namely output gear 234 can rotate relative to output shaft 228, this tooth cover 233 can be arranged on output shaft 228 relative sliding, this such as realizes by key linkage structure, output gear 234 have to overlap with tooth 233 internal spline suitable in conjunction with tooth, conduction axis 26 is fixedly mounted in housing 21, this is such as by realizing through the resilient key 22 of conduction axis 26 and housing 21, in addition, enter in power take-off to prevent the impurity such as dust, between conduction axis 26 and housing 21, seal ring 25 can be installed, this transfer gear 23 is arranged on conduction axis 26 rotatably, and be meshed with output gear 234, at this, in order to improve the conduction efficiency of transfer gear 23, it is arranged on conduction axis 26 by needle bearing 27 rotatably, power take-off 2 is being arranged on after in power take-off mounting interface reserved on the left of gearbox, this transfer gear 23 will engage with the master gear of gearbox, transfer gear 23 is driven with the master gear by gearbox, and then driver output gear 234 rotates, this declutch shaft 214 is connected with the axial sliding fit of housing 21 along output shaft 228, in order to avoid the impurity such as dust enter in power take-off 2 equally, between declutch shaft 214 and housing 21, seal ring 213 can be installed, also the blanking cover 215 be set on declutch shaft 214 can be set outward at housing 21, this blanking cover 215 is fixed on housing 21 by bolt 216, to protect seal ring 213, shift fork 222 is such as fixedly mounted on declutch shaft 214 by elastic cylindrical pin 225, and overlap 233 with tooth and be fixedly connected with, like this, declutch shaft 214 move to make tooth overlap 233 position be meshed in conjunction with tooth with output gear 234 time, if speed changer is linked into corresponding gear, can rotate by driver output axle 228, realization is put into gear power taking, and declutch shaft 214 move to make tooth overlap 233 position be separated in conjunction with tooth with output gear 234 time, no matter what gear speed changer hangs on, output shaft 228 all exports without torque, realize being separated, make thus driver by shift control mechanism realize power take-off 2 put into gear power taking be separated control.
Power take-off assembly of the present invention carries out maneuvering and control owing to adopting gearshift flexible axle 3, therefore eliminates source of the gas, realizes the structures such as the gas circuit of two-way gas maneuvering and control and various cylinders, and this makes power take-off assembly of the present invention have the advantage of the simple and use safety of structure.
In order to ensure the transmission efficiency of power, can arrange multiple flexible shaft bracket between selector 1 and power take-off 2, gearshift flexible axle 3 passes each flexible shaft bracket successively, to retrain reliably the motion path of gearshift flexible axle.
Because the gear of position residing for selector 1 of declutch shaft 214 is determined, therefore, under normal conditions, as long as selector 1 is fixed on required gear, can ensure that declutch shaft 214 is reliably positioned on corresponding position, but in order to avoid declutch shaft 214 because the uncontrollable reasons such as Vehicular vibration have an impact the displacement that power take-off 2 normally uses, as shown in Figure 2, power take-off of the present invention also comprises retaining assembly, this retaining assembly comprises retainer 221, be such as stopping spring 220 of spring with the power taking gear locking groove 214b be all formed on declutch shaft 214 be separated and keep off locking groove 214a, this retainer 221 can be arranged in the mounting hole in housing relative sliding, retainer 221 is locked on power taking gear locking groove 214b or is separated in gear locking groove 214a under the effect of stopping spring 220, namely be compressed in for stopping spring 220 between mounting hole and retainer 221, wherein, declutch shaft 214 moves to position (the i.e. power taking position) correspondence that retainer 221 is locked in power taking gear locking groove 214b makes tooth overlap the internal spline of 233 and the position combined in conjunction with tooth of output gear 234, declutch shaft 214 moves to position (i.e. disengaging configuration) correspondence that retainer 221 is locked in separation gear locking groove 214a makes tooth overlap the position be separated in conjunction with tooth of 233 and output gear 234.Like this, only have and apply enough power by selector 1 declutch shaft 214 just can be made to produce larger movement tendency, and then stopper 221 is released from the locking groove at current place and makes stopper 221 be supported on the surface of declutch shaft 214, and make declutch shaft 214 move to another gear, now, retainer 221 can fall into the locking groove corresponding with another gear again, positions declutch shaft 214.
For the ease of carrying out the installation of retaining assembly, this mounting hole can be through hole, like this, retainer 221 and stopping spring 220 being arranged on after in mounting hole, retainer 221 and stopping spring 220 is encapsulated in mounting hole by plug screw 219.
In order to stopper 221 be released smoothly from current locking groove by shift control mechanism, and there will not be declutch shaft 214 stuck phenomenon, this stopper 221 can adopt spheroid, and this power taking gear locking groove 214b forms guiding surface with the surface being separated gear locking groove 214a, this guiding surface such as can be the cambered surface suitable with spheroid, V-type groove face etc.In addition, locking groove is designed to the structure with guiding surface, all will be conducive to avoiding occurring declutch shaft 214 stuck phenomenon for the stopper 221 of any shape.
For the ease of carrying out the connection between power take-off 2 and transmission shaft (not shown), as shown in Figure 3, the output terminal of this output shaft 228 can have the internal spline for connection for transmission axle.In addition, transmission shaft is also fixed together by adpting flange and output shaft 228.
Selector 1 of the present invention can adopt the structure being similar to shift of transmission device, as long as can realize controlling gearshift flexible axle 3 structure of moving between two positions (the power taking position of corresponding declutch shaft 214 and disengaging configuration) all can be applied in selector 1 of the present invention, Fig. 4 and Fig. 5 shows a kind of alternative selector structure, it comprises gearshift shell 13, gearshift main shaft 11, shift handle 121, power shift gear 12 and the gearshift tooth bar 10 as straight line motion carry-out part, gearshift main shaft 11 is arranged in gearshift shell 13 rotatably, power shift gear 12 is arranged on gearshift main shaft 11 at gearshift shell 13 internal fixtion, gearshift tooth bar 10 and the sliding connection of gearshift shell 13, gearshift tooth bar 10 is meshed with power shift gear 12, shift handle 121 is by being fixedly connected with gearshift main shaft 11 in the outside of gearshift shell 13.Like this, in driver's promotion or when pulling shift handle 121, namely drive gearshift tooth bar 10 to do straight line motion by power shift gear 12, and then drive gearshift flexible axle 3 to switch between the two positions.For the ease of driver determine shift handle 121 the power taking gear corresponding with the power taking position of declutch shaft 214 and with the disengaging configuration of declutch shaft 214 corresponding be separated gear, at gearshift shell, stop member can be set with the two ends of the gearshift chute that is slidably matched of tooth bar 10 or slide rail, the position of two stop members respectively with the power taking gear of shift handle 121 with to be separated gear corresponding, like this, in driver's promotion or when pulling shift handle 121 action, if shift handle 121 cannot continue to move along current gearshift direction because gearshift tooth bar 10 has moved to the position of corresponding end stop member, then illustrate that shift handle 121 has arrived corresponding gear positions.In addition, also can on gearshift shell 13 to power taking be separated two gears and demarcate, to determine two gear positions of shift handle 121.In addition, in order to ensure shifting comfort, handle plastic cap 122 can be set at the handheld terminal of shift handle 121.
For the ease of carrying out the installation of shift handle 121 and fixing, gearshift main shaft 11 can be designed to multidiameter shaft as shown in Figure 8, it comprises the first shaft part 1101, second shaft part 1102 and the 3rd shaft part 1103 that diameter reduces in turn, gearshift main shaft 11 is arranged in gearshift shell 13 by the first shaft part 1101 rotatably, and power shift gear 12 is fixedly mounted on the first shaft part 1101 in gearshift shell 13; Second shaft part 1102 has external splines, the connecting end of shift handle 121 has the internal spline suitable with the external splines of the second shaft part 1102, the connecting end of shift handle 121 is set on the second shaft part 1102, to be rotated relative to gearshift main shaft 11 by spline joint restriction shift handle 121; 3rd shaft part 1103 has outside thread, the connecting end of shift handle 121 is fixed between the first shaft part 1101 (being specially the step surface between the first shaft part 1101 and the second shaft part 1102) and locking nut 18 with coordinating of the 3rd shaft part 1103 by locking nut 18, and then restriction shift handle 121 gearshift main shaft 11 moving axially along gearshift main shaft 11 relatively.At this, in order to prevent locking nut 18 slide fastener, pad 17 can be set between locking nut 18 and the connecting end of shift handle 121, and elastic washer 15 be set and adjust pad 16 between the connecting end and gearshift shell 13 of shift handle 121.
For the ease of assembling this selector 1, gearshift shell 13 can be designed to the structure comprising front gearshift shell and rear gearshift shell, front gearshift shell and rear gearshift shell snap together, and pass through screw fastening.
Above-mentioned gearshift flexible axle (or claiming gearshift wire drawing) can adopt publication number for shifting flexible axle structure disclosed in the Chinese invention patent document of CN 203717882U, the present invention provides a kind of gearshift flexible axle structure being convenient to connect and locate at this, as shown in Figure 6, this gearshift flexible axle 3 comprises front connector 35, rear joint 37 and flexible axle body, rear joint 37 is arranged on the gearshift shell 13 of selector 1, front connector is arranged on flexible shaft bracket 4 as shown in Figure 1, at this, for the structure arranging multiple flexible shaft bracket and carry out guiding constraint, this flexible shaft bracket 4 span is from the nearest flexible shaft bracket of power take-off 2, one end of this flexible axle body through after joint 37 protruding be such as that the shift gears straight line motion carry-out part of tooth bar 10 is connected, rear joint 37 inner chamber with formed between flexible axle body for limit flexible axle body relative after stretch out stroke limiting structure after the outwardly directed stroke of joint 37, and for limiting the retrude reversion degree fixed structure of the stroke that the relatively rear joint 37 of flexible axle body is inwardly retracted, the other end of flexible axle body is connected with one end of Rocker arm 5 through front connector 35 is protruding, front connector 35 inner chamber with formed between flexible axle body for limiting protract the go on a journey degree fixed structure of flexible axle body relative to the outwardly directed stroke of front connector 35, and for stroke limiting structure of retracting before limiting stroke that the relative front connector 35 of flexible axle body inwardly retracts.Above-mentioned stroke limit structure can be made up of the suitable locating shoulder be formed between corresponding inner chamber and flexible axle body and step surface.
Such as, as shown in Figure 6, this flexible axle body can comprise the front rod 32, front mandrel 33, raw silk rings pipe assembly 36, rear mandrel 38 and the back link 39 that link together in turn from front to back; The prelocalization shoulder that the second foreground terrace formed between front rod 32 and front mandrel 33 and front connector 35 inner chamber are formed forms above-mentioned front retraction stroke limiting structure, the rear locating shoulder that the first foreground terrace formed between raw silk rings pipe assembly 36 and front mandrel 33 and front connector 35 inner chamber are formed forms the above-mentioned degree fixed structure of going on a journey that protracts, and this front rod 32 is protruding through front connector 35 to be connected with one end pivotable of Rocker arm 5; The rear locating shoulder that the second backstage terrace formed between back link 39 and rear mandrel 38 and rear joint 37 inner chamber are formed forms above-mentioned retrude reversion degree fixed structure, the prelocalization shoulder that the first backstage terrace formed between raw silk rings pipe assembly 36 and rear mandrel 33 and rear joint 37 inner chamber are formed form above-mentioned after stretch out stroke limiting structure, back link 39 through after joint 37 is protruding is fixedly connected with straight line motion carry-out part.At this, this back link 39 can be screw rod, as shown in Figure 7, its can be such as that shift gears tapped hole 101 that tooth bar 10 arranges carries out screw-thread fit and is connected, and to be locked by locking nut 31; This front rod 32 also can be screw rod, and it is fixed on a connecting ball head by screw connection structure, and is locked by another locking nut 31, and this front rod 32 is connected with one end pivotable of Rocker arm 5 by connecting ball head.
As shown in Fig. 4, Fig. 6 and Fig. 7, the outer wall of this rear joint 37 has the neck cervical part of esophagus 371 forming annular slot, together with rear joint 27 to be connected and fixed with shell 13 of shifting gears by the cooperation of neck cervical part of esophagus 371 and mounting hole 131 on gearshift shell 13.This kind of fixed structure shift gears before shell 13 of shifting gears adopts structure that shell and rear gearshift shell snap together time be convenient to very much install, be specially: mounting hole 131 is spliced by two semi-circular hole positions of the fastening edge being formed at front gearshift shell and rear gearshift shell, first neck cervical part of esophagus 371 can be connected in the semi-circular hole position of rear gearshift shell like this, more front gearshift shell is fastened on rear gearshift shell.
For the ease of installing front connector 35, as shown in Figure 6, the outer wall of this front connector 35 has thread section 351, front connector 35 through the through hole that flexible shaft bracket 4 is arranged, and is fastened on flexible shaft bracket 4 by the Structural lock respectively coordinated with thread section 351 by a locking nut 7,8 in the both sides of flexible shaft bracket 4.
In order to ensure that above-mentioned raw silk rings pipe assembly 36 has the rigidity of requirement, as shown in Figure 9, it is such as the internal lining pipe 361 of plastic material that this raw silk rings pipe assembly 36 can comprise, around the circle raw silk rings pipe 362 that internal lining pipe 361 is arranged, and to be coated on outside a circle raw silk rings pipe 362 be such as the crust 363 of nylon material, one circle raw silk rings pipe 362 arranges to be formed along the axially-aligned of internal lining pipe 361 and restrains around the raw silk rings of internal lining pipe 361, and raw silk rings is restrained lock ring on the surface of internal lining pipe 361 by crust 363.Each raw silk rings pipe 362 close-packed arrays particularly in the tube bank of this raw silk rings, i.e. gapless between adjacent straight fiber tube 362.
In order to ensure that above-mentioned front mandrel 33 and rear mandrel 38 have the rigidity of requirement, this mandrel can comprise Spring Steel Wire, around the circle Galvanized Steel Wire that Spring Steel Wire is arranged, and the crust be coated on outside a circle Galvanized Steel Wire of layout, one circle Galvanized Steel Wire arranges the Steel Tendon formed around Spring Steel Wire along the axially-aligned of Spring Steel Wire, crust by Steel Tendon lock ring on the surface of Spring Steel Wire.
Structure of the present invention, feature and action effect is described in detail above according to graphic shown embodiment; the foregoing is only preferred embodiment of the present invention; but the present invention does not limit practical range with shown in drawing; every change done according to conception of the present invention; or be revised as the Equivalent embodiments of equivalent variations; do not exceed yet specification with diagram contain spiritual time, all should in protection scope of the present invention.

Claims (10)

1. a power take-off, it is characterized in that, comprise housing, declutch shaft, output shaft, conduction axis, shift fork, tooth cover, output gear, transfer gear, described output shaft is arranged in described housing rotatably, described output gear empty set is on described output shaft, described tooth cover can be arranged on described output shaft relative sliding, described output gear have the internal spline that overlaps with described tooth suitable in conjunction with tooth; Described conduction axis is fixedly mounted in described housing, and described transfer gear is arranged on described conduction axis rotatably, and is meshed with described output gear; Described declutch shaft is connected with the axial sliding fit of described housing along described output shaft; Described shift fork is fixedly mounted on described declutch shaft, and is fixedly connected with described tooth cover.
2. power take-off according to claim 1, it is characterized in that, described power take-off also comprises retaining assembly, described retaining assembly comprises retainer, stopping spring is kept off locking groove with the power taking gear locking groove be all formed on described declutch shaft with being separated, described retainer can be arranged in the mounting hole in described housing relative sliding, described retainer is locked in described power taking gear locking groove or described separation gear locking groove under the effect of described stopping spring, wherein, described declutch shaft moves to the position combined in conjunction with tooth making described retainer be locked on internal spline and the described output gear that the position correspondence in described power taking gear locking groove makes tooth overlap, described declutch shaft moves to and makes retainer be locked on the corresponding position be separated in conjunction with tooth making tooth cover and described output gear, the described position be separated in gear locking groove.
3. power take-off according to claim 2, is characterized in that, described stopper is spheroid, and described power taking gear locking groove is the cambered surface suitable with described spheroid with the described surface being separated gear locking groove.
4. a power take-off assembly, comprises power take-off and shift control mechanism, it is characterized in that, the power take-off of described power take-off according to any one of claims 1 to 3; Described shift control mechanism comprises gearshift flexible axle, selector and rocking arm, described rocking arm is connected with rocker arm support pivotable, one end of described gearshift flexible axle is fixedly connected with the straight line motion carry-out part of described selector, the other end is connected with one end of described rocking arm, and the other end of described rocking arm is connected with described declutch shaft.
5. power take-off assembly according to claim 4, it is characterized in that, described selector comprises gearshift shell, gearshift main shaft, shift handle, power shift gear and the gearshift tooth bar as described straight line motion carry-out part, described gearshift main shaft is arranged in described gearshift shell rotatably, described power shift gear is fixedly mounted on described gearshift main shaft, described gearshift tooth bar and the sliding connection of described gearshift shell, described gearshift tooth bar is meshed with described power shift gear, and described shift handle is fixedly connected with described gearshift main shaft.
6. power take-off assembly according to claim 4, it is characterized in that, described gearshift main shaft is multidiameter shaft, comprise the first shaft part, the second shaft part and the 3rd shaft part that diameter reduces in turn, described gearshift main shaft is arranged in described gearshift shell by the first shaft part rotatably, and described power shift gear is fixedly mounted on described first shaft part in described gearshift shell; Described second shaft part has external splines, and the connecting end of described shift handle has the internal spline suitable with the external splines of described second shaft part, and the connecting end of described shift handle is set on described second shaft part; Described 3rd shaft part has outside thread, and the connecting end of described shift handle is fixed between described first shaft part and described locking nut with coordinating of described 3rd shaft part by locking nut.
7. power take-off assembly according to claim 4, it is characterized in that, described gearshift flexible axle comprises front connector, rear joint and flexible axle body, described rear jiont treatment is on the gearshift shell of described selector, described front connector is arranged on flexible shaft bracket, protruding and the described straight line motion carry-out part of one end joint after described of described flexible axle body is connected, stroke limiting structure is stretched out after the prelocalization shoulder that described rear joint inner chamber is formed is configured for limiting the outwardly directed stroke of the relative described rear joint of described flexible axle body with the first backstage terrace that described flexible axle body is formed, the prelocalization shoulder that described rear joint inner chamber is formed is configured for the second backstage terrace that described flexible axle body is formed the retrude reversion degree fixed structure limiting the stroke that the relative described rear joint of described flexible axle body is inwardly retracted, the other end of described flexible axle body is connected through one end of the protruding and described rocking arm of described front connector, the rear locating shoulder that described front connector inner chamber is formed is configured for the first foreground terrace that described flexible axle body is formed the degree fixed structure of going on a journey that protracts limiting the outwardly directed stroke of the relative described front connector of described flexible axle body, and the prelocalization shoulder that described front connector inner chamber is formed is configured for the second foreground terrace that described flexible axle body is formed the front retraction stroke limiting structure limiting the stroke that the relative described front connector of described flexible axle body is inwardly retracted.
8. power take-off assembly according to claim 7, is characterized in that, described flexible axle body comprises the front rod linked together in turn from front to back, front mandrel, raw silk rings pipe assembly, rear mandrel and back link; Form described second foreground terrace between described front rod and described front mandrel, form described first foreground terrace between described raw silk rings pipe assembly and described front mandrel, described front rod is connected through one end pivotable of the protruding and described rocking arm of described front connector; Form described second backstage terrace between described back link and described rear mandrel, form described first backstage terrace between described raw silk rings pipe assembly and described rear mandrel, the protruding and described straight line motion carry-out part of described back link joint after described is fixedly connected with.
9. power take-off assembly according to claim 7, it is characterized in that, the outer wall of described rear joint has the neck cervical part of esophagus forming annular slot, together with described rear joint to be connected and fixed with described gearshift shell by the cooperation of neck cervical part of esophagus and mounting hole on described gearshift shell.
10. power take-off assembly according to claim 7, it is characterized in that, the outer wall of described front connector has thread section, described front connector through the through hole that described flexible shaft bracket is arranged, and is fastened on described flexible shaft bracket by the Structural lock that the both sides at described flexible shaft bracket are respectively coordinated with described thread section by a locking nut.
CN201410482943.2A 2014-09-19 2014-09-19 A kind of power takeoff and power takeoff assembly Active CN104265839B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105546054A (en) * 2015-12-16 2016-05-04 湖北航天技术研究院特种车辆技术中心 Power takeoff device
CN106286810A (en) * 2015-06-01 2017-01-04 泰州市安捷利汽车配件有限公司 A kind of gearshift of electric automobile three class gear box
CN107989994A (en) * 2017-12-08 2018-05-04 中国重汽集团济南动力有限公司 A kind of power takeoff air-control device
CN110645346A (en) * 2019-09-26 2020-01-03 陕西法士特汽车传动集团有限责任公司 Mechanical side power takeoff

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JPH06137349A (en) * 1992-10-26 1994-05-17 Kubota Corp Pto clutch for work machine
JPH08322320A (en) * 1995-05-30 1996-12-10 New Delta Ind Co Reverse travel speed change-controlling device in administrative machine
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Publication number Priority date Publication date Assignee Title
CN106286810A (en) * 2015-06-01 2017-01-04 泰州市安捷利汽车配件有限公司 A kind of gearshift of electric automobile three class gear box
CN105546054A (en) * 2015-12-16 2016-05-04 湖北航天技术研究院特种车辆技术中心 Power takeoff device
CN107989994A (en) * 2017-12-08 2018-05-04 中国重汽集团济南动力有限公司 A kind of power takeoff air-control device
CN110645346A (en) * 2019-09-26 2020-01-03 陕西法士特汽车传动集团有限责任公司 Mechanical side power takeoff

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Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669

Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd

Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669

Patentee before: Anhui Jianghuai Automotive Co., Ltd.