CN208816650U - Gear drive ventilation device with pull-fork assembly - Google Patents
Gear drive ventilation device with pull-fork assembly Download PDFInfo
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- CN208816650U CN208816650U CN201821134557.4U CN201821134557U CN208816650U CN 208816650 U CN208816650 U CN 208816650U CN 201821134557 U CN201821134557 U CN 201821134557U CN 208816650 U CN208816650 U CN 208816650U
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- pull
- gear drive
- oil
- ventilation device
- shift fork
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Abstract
The utility model provides a kind of gear drive ventilation device with pull-fork assembly, the ventilation device of the utility model, which is located at, is configured with shift fork axis hole, can install in the pull-fork assembly on the mechanism shell of fork axis, it includes being located on the mechanism shell, to constitute the venthole that shift fork axis hole is connected to ambient atmosphere, and it is configured in shift fork shaft hole inner wall, to constitute the air channel of the connection inside venthole and mechanism shell, it further include the connectivity part set on venthole and ambient atmosphere, the rated pressure threshold value that is undertaken in mechanism shell and open, to constitute the breather plug that venthole is connected with ambient atmosphere, the gear drive ventilation device with pull-fork assembly of the utility model, structure is simple, processing cost is low, oil liquid accumulation is not will cause, with stronger practicability.
Description
Technical field
The utility model relates to gear drive technical field of structures more particularly to a kind of gears with pull-fork assembly
Transmission mechanism ventilation device.
Background technique
Since gear drive can generate a large amount of heat, in order to cool down, it will usually be arranged on transmission mechanism and connect with outside
Logical venthole, it is contemplated that the needs of grease proofing leakage.The ventilation device of gear drive is mainly by driver at present
Reinforcement inside structure, and then multi-cavity labyrinth type or cavity oil baffle type structure are formed, but this two kinds of structures have drawback.
Multi-cavity labyrinth type ventilation device needs to be arranged a plurality of leakproof oil gluten while increasing case weight and cost, also increases
The churning loss for having added transmission mechanism reduces the transmission efficiency of transmission mechanism, causes shadow to the dynamic property and economy of vehicle
It rings
Cavity oil baffle type structure is avoided that oil liquid directly impacts venthole, but oil liquid can not be prevented to enter deep chamber, when turning
When the higher oil mass of speed is larger, the space of relative closure instead can the oil liquid of entry deterrence depth chamber be back to retarder inner cavity, in turn
Deep intracavitary oil liquid is caused constantly to accumulate final oil leak, and this structure need to newly open oil baffle, retarder increased costs.
Utility model content
In view of this, the utility model is directed to a kind of gear drive ventilation device with pull-fork assembly, with
It can make have the ventilation device of the gear drive of pull-fork assembly relatively simple, effective.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of gear drive ventilation device with pull-fork assembly, positioned at be configured with shift fork axis hole, institute can be installed
It states in pull-fork assembly on the mechanism shell of fork axis, and comprising:
Venthole is located on the mechanism shell, to constitute the connection of the shift fork axis hole and ambient atmosphere；
Air channel is configured on the inner wall of the shift fork axis hole, to constitute the venthole (101) and the mechanism shell
Internal connection；
Breather plug, set on the connectivity part of the venthole and ambient atmosphere, and the breather plug is arranged to be undertaken in institute
It states the rated pressure threshold value in mechanism shell and opens, to constitute the conducting of the venthole and ambient atmosphere.
Further, the top of the venthole is higher than the shift fork axis hole, and the air channel is located at the shift fork axle
The top in hole.
Further, the rated pressure threshold value is 1.5 times of atmospheric pressures.
It further, further include the drainback passage being configured on the mechanism shell, one end of the drainback passage and institute
Air channel connection is stated, the other end of the drainback passage is penetrated through to the inside of the mechanism shell.
Further, one end that the drainback passage and mechanism shell inside are connected to is penetrated through to the gear drive machine
The top of bearing inside structure.
Further, the drainback passage include it is on the shift fork shaft hole inner wall, be connected to the air channel
First oil-recovery tank, and in being configured in the second oil-recovery tank on the mechanism shell inner wall outside the shift fork axis hole, described
Two oil-recovery tanks constitute the connection between first oil-recovery tank and the top of the bearing.
Further, first oil-recovery tank includes the end setting for corresponding to the shift fork axle and one end leads to described
The oil guide groove of air drain connection, and be arranged below the shift fork axle be connected to the oil guide groove and second oil-recovery tank it
Between drain pan.
Further, the drain pan has a down dip setting along to the direction of second oil-recovery tank.
Further, the drainback passage casting and forming is on the mechanism shell.
Further, the gear drive is one of retarder, gearbox or gear-box.
Compared with the prior art, the gear drive ventilation device described in the utility model with pull-fork assembly has
Following advantage；
(1) the gear drive ventilation device with pull-fork assembly of the utility model, by being set at shift fork axis hole
Venthole is set, and the air channel that will be connected to inside venthole and transmission mechanism is set on shift fork shaft hole inner wall, can simply be had
The realization of effect is ventilated.The structures such as leakproof oil gluten, oil baffle are not needed, to simplify the structure of transmission mechanism.
(2) top of venthole is higher than shift fork axis hole, effectively prevent oil liquid leakage.
(3) drainback passage can be such that the oil liquid into air channel falls after rise to in-house, prevent oil liquid from accumulating, improve oil liquid benefit
Use efficiency.
(4) drainback passage is by casting and forming on mechanism shell, can reducing processing cost, while the depanning cast is oblique
Degree can accelerate the speed of oil liquid falling.
The setting of (5) second oil-recovery tanks can be such that oil liquid falls after rise to position of bearings, help bearing lubrication, improve bearing and biography
The service life of motivation structure.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is the cross-sectional view of retarder ventilating mechanism described in the utility model embodiment；
Partial enlarged view in Fig. 2 Fig. 1 at A.
Description of symbols:
1- reducer shell, 101- shift fork axis hole, 102- venthole, 103- air channel, the first oil-recovery tank of 104-, 1041-
Oil guide groove, 1042- rush down oil groove, the second oil-recovery tank of 105-,
2- pull-fork assembly, 21- shift fork axle, 22- shift fork,
3- breather plug,
4- bearing
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
The present embodiment is related to a kind of gear drive ventilation device with pull-fork assembly, can be used in speed changer, slow down
Device, gear-box etc. have on the gear drive of pull-fork assembly, and the present embodiment is by taking retarder as an example to this with pull-fork assembly
Gear drive ventilation device be illustrated, and be applied to speed changer, other gears with pull-fork assembly such as gear-box
Ventilation device and the present embodiment on transmission mechanism it is described below similar, repeated no more in the present embodiment.
The retarder ventilation device of the present embodiment is configured with shift fork axis hole 101, is dialled with that can install as shown in Figure 1, it is located at
Pitch component 2 in shift fork axle 21 reducer shell 1 on comprising be located at reducer shell 1 on, with constitute shift fork axis hole 101 with
The venthole 102 of ambient atmosphere connection, and be configured on 101 inner wall of shift fork axis hole, constitute venthole 102 and reducing gearbox
The air channel 103 being connected to inside body 1 further includes set on the connectivity part of venthole 102 and ambient atmosphere, is undertaken in reducer shell
1 inside rated pressure opens, constitutes the breather plug 3 that venthole 102 is connected with ambient atmosphere.
The purpose of pull-fork assembly 2 in gear drive for changing the cooperation between gear, realizing speed regulation, such as Fig. 1 institute
Show comprising the shift fork axle 21 being mounted on reducer shell 1, and the shift fork 22 being arranged in shift fork axle 21.And in order to pacify
Shift fork axle 21 is filled, shift fork axis hole 101 is equipped on reducer shell 11.
In the present embodiment, the structure of venthole 102 is as shown in Figure 1, it runs through reducer shell 1, composition shift fork axis hole
101 with the connection of ambient atmosphere.Meanwhile can be leaked out in order to prevent into the oil liquid of venthole 102 from retarder, in the present embodiment
The top that the top of venthole 102 is higher than shift fork axis hole 101 is arranged.
Since shift fork axle 21 and shift fork axis hole 101 are that tight fit subtracts after installing shift fork axle 21 in shift fork axis hole 101
It can not be in communication with the outside by shift fork axis hole 101 and venthole 102 inside fast device.To realize retarder inside and venthole
102 connection, the present embodiment is also provided with air channel 103, and as shown in Fig. 2, which is specially to be arranged in shift fork axle
Straight-line groove on 101 inner wall of hole, inside connection venthole 102 and retarder.
To prevent retarder in use, water and dust are by causing retarder inside the entrance retarder of venthole 102
Internal damage aggravation.102 place of being in communication with the outside of venthole is provided with breather plug 3 in the present embodiment, the breather plug 3 is in retarder
Inside is opened after reaching specified pressure threshold, constitutes the conducting of venthole 102 and ambient atmosphere.Its structure is the prior art,
Details are not described herein.
By above-mentioned setting, the ventilatory function of retarder can be realized.The principle is as follows: running at high speed in retarder
When, internal temperature increases, and the gas of expansion is entered in venthole 102 by air channel 103, pressure is applied to breather plug 3,
As shown in arrow in Fig. 1 and Fig. 2.It is 1.5 times of atmospheric pressure in the present embodiment when pressure reaches the rated pressure threshold value of breather plug 3
When, breather plug 33 is opened, and internal expansion gas is discharged, and realizes retarder inside and outside air pressure balance.Gear rotates the splashing taken up
The oil liquid overwhelming majority can be blocked by shift fork axle 21, have minimal amount of oil liquid that can enter air channel 103, due to the top of venthole 102
Portion is higher than shift fork axis hole 101, and oil liquid will not be leaked out from venthole 102.It is i.e. real by shift fork axle 21 essential in mechanism
Show the function of oil baffle in existing mechanism, to simplify structure, reduces cost.
Accumulation of the oil liquid in air channel 103 in order to prevent, influences ventilatory effect.In the present embodiment, in reducer shell 1
On be also configured with drainback passage, one end of the drainback passage is connected to air channel 103, and the other end is penetrated through to reducer shell 1
It is internal.And in order to improve oil liquid utilization rate, in the present embodiment, one end perforation for being connected to inside drainback passage and reducer shell 1
To the top of gear drive internal bearings 4, the oil liquid into drainback passage is made to drop to bearing 4, to help to moisten bearing 4
It is sliding.In the present embodiment, drainback passage specifically include it is on 101 inner wall of shift fork axis hole, be connected to air channel 103 first time
Oil groove 104, and the second oil-recovery tank 105 on 1 inner wall of reducer shell is configured in outside shift fork axis hole 101.Wherein,
Two oil-recovery tanks 105 constitute the connection between above-mentioned 4 top of the first oil-recovery tank 104 and bearing.
And it is more specific, in the present embodiment, the end that the first oil-recovery tank 104 specifically includes corresponding shift fork axle 21 is arranged, and one
The oil guide groove 1041 that end is connected to air channel 103, and what is be arranged below shift fork axle 21 are connected to oil guide groove 1041 and second
Drain pan 1042 between oil-recovery tank 105.Wherein, as shown in Fig. 2, oil guide groove 1041 is specially that setting is deep in shift fork axis hole 101
The straight-line groove at place, drain pan 1042 are then the straight-line groove for being arranged in 101 bottom of shift fork axis hole, and in order to accelerate oil liquid to return
It falls, in the present embodiment, drain pan 1042 has a down dip arrangement along the direction to the second oil-recovery tank 105.Thus it is arranged, into air channel
The oil liquid for entering oil guide groove 1041 when 103 a small amount of oil liquid or shift fork axle 21 movement can pass through oil guide groove 1041, drain pan
1042 return inside retarder, will not be deposited in air channel 103.
In order to reduce processing cost, above-mentioned drainback passage casting and forming is on reducer shell 1.Moreover, in founder
In skill, for the ease of part depanning, it will usually there is depanning angle.Therefore casting technique can be formed directly in above-mentioned drain pan 1042
It has a down dip, reduces processing cost.
The setting of second oil-recovery tank 105 can further improve using effect, the structure of the second oil-recovery tank 105 as shown in Figure 1,
It is the groove being arranged on the inner wall of reducer shell 1.Second oil-recovery tank 105 is connected to drain pan 1042, and guiding axis
Hold 4 top.As a result, from drain pan 1042 flow back oil liquid be flowed into the second oil-recovery tank 105 after, part oil liquid can be through second time
Oil groove 105 flow to the top of bearing 4, as shown in arrow in Fig. 1 and Fig. 2, and is dropped on 4, bearing under gravity,
To improve the lubricant effect to bearing 44.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (10)
1. a kind of gear drive ventilation device with pull-fork assembly, positioned at be configured with shift fork axis hole (101), can install
In the pull-fork assembly (2) on the mechanism shell of shift fork axle (21), characterized by comprising:
Venthole (102) is located on the mechanism shell, to constitute the connection of shift fork axis hole (101) and ambient atmosphere；
Air channel (103) is configured on the inner wall of the shift fork axis hole (101), to constitute the venthole (102) and the machine
The connection of structure enclosure interior；
Breather plug (3) is set to the connectivity part of the venthole (102) and ambient atmosphere, and the breather plug (3) is arranged to hold
The rated pressure threshold value that is connected in the mechanism shell and open, to constitute the conducting of the venthole (102) and ambient atmosphere.
2. the gear drive ventilation device according to claim 1 with pull-fork assembly, it is characterised in that: described logical
The top of stomata (102) is higher than the shift fork axis hole (101), and the air channel (103) is located at the shift fork axis hole (101)
Top.
3. the gear drive ventilation device according to claim 2 with pull-fork assembly, it is characterised in that: the volume
Level pressure force threshold is 1.5 times of atmospheric pressures.
4. the gear drive ventilation device according to any one of claim 1 to 3 with pull-fork assembly, feature
It is: further includes the drainback passage being configured on the mechanism shell, one end of the drainback passage and the air channel (103)
Connection, the other end of the drainback passage are penetrated through to the inside of the mechanism shell.
5. the gear drive ventilation device according to claim 4 with pull-fork assembly, it is characterised in that: described time
The one end being connected to inside oily channel and the mechanism shell is penetrated through to the top of the internal bearings of the gear drive (4).
6. the gear drive ventilation device according to claim 5 with pull-fork assembly, it is characterised in that: described time
Oily channel includes the first oil-recovery tank on shift fork axis hole (101) inner wall, being connected to the air channel (103)
(104), it and in the shift fork axis hole (101) is configured in the second oil-recovery tank (105) on the mechanism shell inner wall outside, institute
State the connection between the second oil-recovery tank (105) described first oil-recovery tank (104) of composition and the top of the bearing (4).
7. the gear drive ventilation device according to claim 6 with pull-fork assembly, it is characterised in that: described
One oil-recovery tank (104) includes the end setting corresponding to the shift fork axle (21) and one end is connected to the air channel (103)
Oil guide groove (1041), and what is be arranged below the shift fork axle (21) are connected to the oil guide groove (1041) and second time described
Drain pan (1042) between oil groove (105).
8. the gear drive ventilation device according to claim 7 with pull-fork assembly, it is characterised in that: described to let out
Oil groove (1042) has a down dip setting along to the direction of second oil-recovery tank (105).
9. the gear drive ventilation device according to claim 4 with pull-fork assembly, it is characterised in that: described time
Oily channel casting and forming is on the mechanism shell.
10. the gear drive ventilation device according to claim 1 with pull-fork assembly, it is characterised in that: described
Gear drive is one of retarder, gearbox or gear-box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821134557.4U CN208816650U (en) | 2018-07-17 | 2018-07-17 | Gear drive ventilation device with pull-fork assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821134557.4U CN208816650U (en) | 2018-07-17 | 2018-07-17 | Gear drive ventilation device with pull-fork assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208816650U true CN208816650U (en) | 2019-05-03 |
Family
ID=66270959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821134557.4U Active CN208816650U (en) | 2018-07-17 | 2018-07-17 | Gear drive ventilation device with pull-fork assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208816650U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115143311A (en) * | 2021-03-29 | 2022-10-04 | 比亚迪股份有限公司 | Ventilation cap and vehicle that has it |
-
2018
- 2018-07-17 CN CN201821134557.4U patent/CN208816650U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115143311A (en) * | 2021-03-29 | 2022-10-04 | 比亚迪股份有限公司 | Ventilation cap and vehicle that has it |
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