CN207880034U - A kind of power take off device with lazy-tongs - Google Patents
A kind of power take off device with lazy-tongs Download PDFInfo
- Publication number
- CN207880034U CN207880034U CN201820003618.7U CN201820003618U CN207880034U CN 207880034 U CN207880034 U CN 207880034U CN 201820003618 U CN201820003618 U CN 201820003618U CN 207880034 U CN207880034 U CN 207880034U
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- gear
- input
- ring
- combined cover
- hub
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- 230000006872 improvement Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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Abstract
The utility model patent is related to a kind of power take off device with lazy-tongs, includes two groups of teeth wheel decelerator, transmission shaft, output shaft, involute outer spline hub and the synchronizer being made of three gears；Three gears are made of the input gear, intermediate gear and output gear being connected with each other successively, the input gear and intermediate gear constitute first group of retarder, wherein, input gear is driving gear, intermediate gear is driven gear, the input gear is mounted on the transmission shaft being connect with engine, the input gear is dallied by needle bearing and input shaft cooperation, the intermediate gear and output gear constitute second group of retarder, wherein, intermediate gear is driving gear, and output gear is driven gear；The synchronizer is mounted on input shaft, and the input gear engages to spread out of power by combined cover by being fixed on the involute outer spline hub of its input axis direction with the combined cover in synchronizer.
Description
Technical field
The utility model is related to a kind of power take off devices with lazy-tongs, and especially one kind is towards special vehicle
The power output device in field.
Background technology
The fixed direction allocation of Engines Used In Special Vehicle system is one of core demand of user, such as vehicle capstan winch transmission device, certainly
Unload, explosive field mixed loading truck and automobile crane hang various auxiliary devices in oil pump, fire engine water-pump and engineering machinery, such as
Air compressor, fuel pump, waste material collector, refrigeration machine etc., since the power that power take off is capable of providing continuous-stable is defeated
Go out, is the important spare part in vehicle power field.
Currently, the transmission form majority of the power take off of mainstream is that gear transmits in the market.Pass through a pair of engaged gears
Power on speed changer or engine is passed on power take off, engagement transmission and gear and axis through another pair gear
Cooperation, transfers power to other equipment, the disadvantage is that the process of shift needs first to stop, separates power transmission process, when causing
Between waste, when non-loaded, the noise between gear is excessive, reduces the user satisfaction of user.And self-unloading can be led to
Vehicle unloading operation need stop shift, step on clutch hang neutral gear in the case of by lifting pump one end gear by combined cover with it is defeated
Shaft is connected, and then puts into gear again, loose clutch.It can not achieve the switching at runtime in vehicle travel process.
As special vehicle is increasingly toward intelligence, the direction of multifunction is developed, and power management system is also required to upgrade
It regenerates, realizes more diversified power management.It needs design more to smooth out reliable power take off, avoids lacking for shift control
It falls into.
Invention content
The utility model aim be for existing method there are the problem of design it is a kind of it is simple in structure, improvement cost is low, peace
The device that complete reliable power steadily accesses.
In order to solve the above technical problems, the utility model provides a kind of power take off dress with lazy-tongs
It sets, includes the two groups of teeth wheel decelerator being made of three gears, input shaft, jackshaft, output shaft, involute outer spline hub and same
Walk device；
Three gears are made of the input gear, intermediate gear and output gear being connected with each other successively, institute
The input gear and intermediate gear stated constitute first group of retarder, wherein input gear is driving gear, and intermediate gear is driven
Gear, the input gear are mounted on the input shaft that is connect with engine, the input gear by needle bearing with it is defeated
Enter axis cooperation to dally, the intermediate gear and output gear constitute second group of retarder, wherein intermediate gear is actively
Gear, output gear are driven gears；
The synchronizer is mounted on input shaft, and the input gear inputs gradually opening for axis direction by being fixed on it
Line external splines hub engages to spread out of power by combined cover with the combined cover in synchronizer.
Further：The needle bearing carries out axial restraint by baffle ring and input shaft, and the input gear passes through
Snap ring carries out axial restraint with input shaft.
Further：The synchronizer includes combined cover, splined hub, positioning pin, sliding block, spring ring, lock ring and is located at
The conical friction face of input gear front end, the splined hub is sleeved on the input shaft between input gear and bushing, described
Lock ring be arranged between splined hub and involute outer spline hub, the lock ring is equipped with interrupted short spline gear, lock ring
On spline tooth profiled outline size and involute outer spline hub and splined hub external spline teeth all same, the sliding block is embedding
It closes in the axial groove of splined hub, sliding block can slide axially along slot, and the splined hub is connected by spring ring with positioning pin, fixed
Position pin passes through the through-hole on sliding block to be connected with combined cover under the action of the spring, and the spherical surface for positioning pin end is just embedded in combined cover
In the groove at middle part, neutral gear positioning action is played, the notch to match with sliding block both ends, the cunning are offered on the lock ring
The both ends of block are stretched into the notch of lock ring.
Further：One end of spline tooth on the lock ring against clutch collar is provided with angle of lock, the locking
Angle is identical as the chamfering of combined cover increment, is provided on the lock ring in identical with the conical friction face cone degree of input gear
The conical surface is provided with the helicla flute of closely-pitched on the inner conical surface, after two taper-face contacts, destroys oil film, increases between the conical surface
Friction.
Further：There are three the sliding block settings, and described three sliding blocks are entrenched in three axis of splined hub respectively
Into slot, there are three the positioning pin is also provided with, described three positioning pins all pass through three cunnings under the action of spring ring
Block is connected with combined cover.
Further：It is raised there are three settings on the lock ring, it offers in the splined hub and matches with protrusion
Straight slot, when boss is in the center of notch, combined cover can be engaged with the tooth of lock ring
With the above structure, the power take off device of a kind of lazy-tongs provided by the utility model, will be original
Engagement device changes into the engagement device with lock loop synchronizer formula, and with tribology principle is crossed, before so that combined cover is engaged, input is defeated
Go out the speed sync of device.Compared with prior art, the utility model has the beneficial effects that it can ensure engagement from structure
Set can not possibly be contacted with involute outer spline hub to be joined before reaching synchronous, and noise is impacted and occurred to avoid between cog.
Description of the drawings
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is the principles of the present invention schematic diagram.
Fig. 2 is the structural schematic diagram of the utility model.
Specific implementation mode
A kind of power take off device with lazy-tongs as depicted in figs. 1 and 2, includes being made of three gears
Two groups of teeth wheel decelerator, input shaft 3, jackshaft 10, output shaft 12, involute outer spline hub 7 and synchronizer 8；Described three
Gear is made of the input gear 5, intermediate gear 11 and output gear 13 being connected with each other successively, the input gear 5
First group of retarder is constituted with intermediate gear 11, wherein input gear 5 is driving gear, and intermediate gear 11 is driven gear, institute
The input gear 5 stated is mounted on the input shaft 3 being connect with engine, and the engine passes through clutch and gearbox phase
Even, the input gear is dallied by needle bearing 4 and input shaft cooperation, the intermediate gear 11 and output gear 13
Constitute second group of retarder, wherein intermediate gear is driving gear, and output gear is driven gear；
The synchronizer is mounted on input shaft 3, and the input gear 5 inputs axis direction gradually by being fixed on it
The external splines hub that bursts at the seams engages to spread out of power by combined cover with the combined cover in synchronizer.
Needle bearing 4 as shown in Figure 2 carries out axial restraint by baffle ring 2 and input shaft 3, and the input gear 5 is logical
It crosses snap ring 1 and carries out axial restraint with input shaft 3.
Synchronizer as shown in Figure 2 includes lock ring 8.1, positioning pin 8.2, combined cover 8.3, sliding block 8.4, spring ring 8.5, flower
Key hub 8.6 and the conical friction face for being located at 5 front end of input gear, the splined hub are sleeved between input gear 5 and bushing 9
Input shaft 3 on, the lock ring 8.1 is arranged between splined hub and involute outer spline hub, and the lock ring is equipped with disconnected
Continuous short spline gear, profiled outline size and involute outer spline hub and the external spline teeth of splined hub of the spline tooth on lock ring
All same, the sliding block are entrenched in the axial groove of splined hub, and sliding block can slide axially along slot, and the splined hub passes through bullet
Spring coil is connected with positioning pin, and positioning pin passes through the through-hole on sliding block to be connected with combined cover 8.3 under the action of the spring, positioning pin end
The spherical surface in portion is just embedded in the groove at 8.3 middle part of combined cover, plays neutral gear positioning action, is offered and is slided on the lock ring
The both ends of the notch that block both ends match, the sliding block are stretched into the notch of lock ring.
One end of spline tooth on above-mentioned lock ring 8.1 against clutch collar is provided with angle of lock, the angle of lock and knot
The chamfering of 8.3 increment of trap is identical, is provided on the lock ring 8.1 identical with the conical friction face cone degree of input gear 5
Inner conical surface is provided with the helicla flute of closely-pitched on the inner conical surface, after two taper-face contacts, destroys oil film, increases between the conical surface
Friction.
There are three above-mentioned sliding block settings, and described three sliding blocks 8.4 are entrenched in three axial grooves of splined hub 8.6 respectively
Interior, there are three the positioning pin 8.2 is also provided with, described three positioning pins all pass through three under the action of spring ring 8.5
Sliding block is connected with combined cover 8.3.
It is raised there are three settings on above-mentioned lock ring, the straight slot to match with protrusion is offered in the splined hub 8.6,
When boss is in the center of notch, combined cover 8.3 can be engaged with the tooth of lock ring 8.1.
Involute outer spline hub and combined cover combined method are as follows in the utility model：
S1：Clutch collar is stirred with shift fork and be moved to the left together with movable slider in the course of work；When sliding block left side and lock
When the end face contact of the notch of ring, lock ring pressed toward gear is just pushed, the male cone (strobilus masculinus) of the inner conical surface pressed toward gear of lock ring is made；Due to two
The conical surface has speed discrepancy, so generating rubbing action once contact.
S2：Gear drives lock ring to turn over an angle in advance relative to clutch collar by rubbing action, until lock ring
When the another side of notch and sliding block contacts, lock ring is just rotated synchronously with clutch collar；At this point, the tooth of clutch collar and the tooth of lock ring are wrong
Opened about half transverse tooth thickness, to make end relief face end relief corresponding with the lock ring face of clutch collar just contradict each other without
Engagement can be entered, continue reinforcing on clutch collar, rubbing action just makes rapidly involute outer spline hub rotating speed drop to and lock ring turn
Speed is identical, and the latter two keep synchronous rotary.
The power take off device for sum up narrating a kind of lazy-tongs provided by the utility model, by original engagement device
The engagement device with lock loop synchronizer formula is changed into, with tribology principle is crossed, before making combined cover engagement, input/output unit
Speed sync.Compared with prior art, the utility model has the beneficial effects that it can ensure from structure clutch collar with it is waiting
The involute outer spline hub of conjunction can not possibly contact before reaching synchronous, and noise is impacted and occurred to avoid between cog.
Above are merely preferred embodiments of the utility model, it should be pointed out that：For the ordinary skill people of the art
For member, without departing from the principle of this utility model, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as the scope of protection of the utility model.
Claims (6)
1. a kind of power take off device with lazy-tongs, it is characterised in that：It include the two groups of teeth being made of three gears
Wheel decelerator, input shaft (3), jackshaft (10), output shaft (12), involute outer spline hub (7) and synchronizer (8)；
Three gears are the input gear (5), intermediate gear (11) and output gear (13) institute by being connected with each other successively
Composition, the input gear (5) and intermediate gear (11) constitute first group of retarder, wherein input gear (5) is driving tooth
Wheel, intermediate gear (11) are driven gear, and the input gear (5) is mounted on the transmission shaft being connect with engine, described
Input gear is dallied by needle bearing (4) and input shaft (3) cooperation, the intermediate gear (11) and output gear
(13) second group of retarder is constituted, wherein intermediate gear is driving gear, and output gear is driven gear；
The synchronizer is mounted on input shaft (3), and the input gear (5) exports axis direction gradually by being fixed on it
The external splines hub that bursts at the seams engages to spread out of power by combined cover with the combined cover in synchronizer.
2. a kind of power take off device with lazy-tongs according to claim 1, it is characterised in that：The rolling
Needle bearing (4) carries out axial restraint by baffle ring (2) and input shaft (3), the input gear (5) by snap ring (1) with it is defeated
Enter axis (3) and carries out axial restraint.
3. a kind of power take off device with lazy-tongs according to claim 1, it is characterised in that：Described is same
Step device include lock ring (8.1), positioning pin (8.2), combined cover (8.3), sliding block (8.4), spring ring (8.5), splined hub (8.6) and
It is located at the conical friction face of input gear (5) front end, the splined hub is sleeved between input gear (5) and bushing (9)
On input shaft (3), the lock ring (8.1) is arranged between splined hub and involute outer spline hub (7), is set on the lock ring
There are interrupted short spline gear, profiled outline size and involute outer spline hub and the outer flower of splined hub of the spline tooth on lock ring
Key teeth all same, the sliding block are entrenched in the axial groove of splined hub, and sliding block can slide axially along slot, and the splined hub is logical
It crosses spring ring (8.5) with positioning pin (8.2) to be connected, positioning pin passes through through-hole and knot on sliding block (8.4) under the action of the spring
Trap (8.3) is connected, and the spherical surface for positioning pin end is just embedded in the groove in the middle part of combined cover (8.3), plays neutral gear positioning and makees
With offering the notch to match with sliding block both ends on the lock ring, the both ends of the sliding block are stretched into the notch of lock ring.
4. a kind of power take off device with lazy-tongs according to claim 3, it is characterised in that：The lock
One end of the spline tooth of clutch collar (8.3) is provided with angle of lock, the angle of lock and combined cover (8.3) on ring (8.1)
The chamfering of increment is identical, and inner cone identical with the conical friction face cone degree of input gear (5) is provided on the lock ring (8.1)
Face is provided with the helicla flute of closely-pitched on the inner conical surface, after two taper-face contacts, destroys oil film, increases rubbing between the conical surface
It wipes.
5. a kind of power take off device with lazy-tongs according to claim 3, it is characterised in that：The cunning
There are three block (8.4) settings, and described three sliding blocks are entrenched in respectively in three axial grooves of splined hub, the positioning pin
(8.2) there are three being also provided with, described three positioning pins all pass through three sliding blocks and combined cover under the action of spring ring (8.5)
(8.3) it is connected.
6. a kind of power take off device with lazy-tongs according to claim 3, it is characterised in that：The lock
It is raised there are three settings on ring, the straight slot to match with protrusion is offered in the splined hub, when boss is in notch
When central, combined cover (8.3) can be engaged with the tooth of lock ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820003618.7U CN207880034U (en) | 2018-01-02 | 2018-01-02 | A kind of power take off device with lazy-tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820003618.7U CN207880034U (en) | 2018-01-02 | 2018-01-02 | A kind of power take off device with lazy-tongs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207880034U true CN207880034U (en) | 2018-09-18 |
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ID=63506451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820003618.7U Expired - Fee Related CN207880034U (en) | 2018-01-02 | 2018-01-02 | A kind of power take off device with lazy-tongs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207880034U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131441A (en) * | 2018-01-02 | 2018-06-08 | 扬中市通发实业有限公司 | A kind of power take off device with lazy-tongs |
| CN111868404A (en) * | 2018-11-21 | 2020-10-30 | 舍弗勒技术股份两合公司 | Synchronization device and locking element for a synchronization device |
| CN113864428A (en) * | 2021-09-18 | 2021-12-31 | 东风商用车有限公司 | Low-gear cone hub structure, rear shell device and transmission |
-
2018
- 2018-01-02 CN CN201820003618.7U patent/CN207880034U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131441A (en) * | 2018-01-02 | 2018-06-08 | 扬中市通发实业有限公司 | A kind of power take off device with lazy-tongs |
| CN111868404A (en) * | 2018-11-21 | 2020-10-30 | 舍弗勒技术股份两合公司 | Synchronization device and locking element for a synchronization device |
| CN111868404B (en) * | 2018-11-21 | 2022-07-05 | 舍弗勒技术股份两合公司 | Synchronization device and locking element for a synchronization device |
| CN113864428A (en) * | 2021-09-18 | 2021-12-31 | 东风商用车有限公司 | Low-gear cone hub structure, rear shell device and transmission |
| CN113864428B (en) * | 2021-09-18 | 2023-03-03 | 东风商用车有限公司 | Low-gear cone hub structure, rear shell device and transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180918 |
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| CF01 | Termination of patent right due to non-payment of annual fee |