CN204196602U - Gas circuit structure of central authorities' gassing of filling - Google Patents
Gas circuit structure of central authorities' gassing of filling Download PDFInfo
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- CN204196602U CN204196602U CN201420641338.0U CN201420641338U CN204196602U CN 204196602 U CN204196602 U CN 204196602U CN 201420641338 U CN201420641338 U CN 201420641338U CN 204196602 U CN204196602 U CN 204196602U
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- seal ring
- air flue
- wheel hub
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- 230000003068 static effect Effects 0.000 claims abstract description 30
- 230000007704 transition Effects 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
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Abstract
A gas circuit structure for central inflation and deflation comprises a hub, wherein a knuckle is mounted in the hub through an inner bearing and an outer bearing, an upper static gas channel is arranged in the knuckle, a rotary gas channel is arranged in the hub, the upper static gas channel is communicated with the rotary gas channel through a transition gas channel, and the transition gas channel is arranged between the inner bearing and an inner end face of the hub; the transition air passage is formed by sealing and separating a gap between the hub and the steering knuckle by a large sealing ring and a small sealing ring. The utility model discloses rationally distributed, knuckle structural strength is high, simple structure, not fragile airtight piece, long service life when dismantling.
Description
Technical field
The utility model relates to a kind of wagon control parts, is specifically related to a kind of gas circuit structure of vehicle center tyre air-charging and air-discharging system.
Background technology
The road surface more complicated that commercial vehicle/comm..vehicle travels, usually need to travel on muddy and soft surface, theoretical according to vehicle-terra mechanics, when ground friction coefficient and other conditions certain, tire-contact area is larger, and the tractive force that vehicle obtains from ground is also larger.Therefore, change ground contact area by regulating wheel air pressure, just can play the effect changing vehicle traction, thus improve the crossing ability of vehicle.Want to realize to tire inflation/deflation in vehicle travel process, controlling the wheel how gas circuit be connected to selection from motionless vehicle body is the large technical barrier needing to solve.
The gas circuit structure extensively adopted at present is: air flue first by motionless steering swivel, then through being located at the gap between the two bearings between steering swivel and wheel hub, is switched to tire finally by wheel hub.There is following defect in gas circuit structure thus arranged: is all furnished with air flue in the field of load of 1, steering swivel and hub bearing, affects the service life of steering swivel; 2, between two bearings, arrange seal ring, cause the fitting process of wheel hub, bearing and seal ring complicated, in demolition and maintenance and maintenance bearing and seal ring process, seal ring is fragile.
Concrete Chinese invention patent (Authorization Notice No.: CN 102019820 B as depicted in figs. 1 and 2, authorized announcement date: on 04 09th, 2014, name be called: " a kind of gas circuit structure of central air-charging and air-discharging system ") disclosed by information: a kind of gas circuit structure of central air-charging and air-discharging system, comprise wheel hub 2, steering swivel 1 is installed in wheel hub 2, end cap 7 is provided with in the side end face of wheel hub 2, cavity 8 is formed between end cap 7 and steering swivel 1, the Ith seal ring 9 and the IIth seal ring 10 is respectively equipped with between steering swivel 1 and wheel hub 2, described steering swivel 1 has static air flue 4 and lower static air flue 5, have on the hub 2 and rotate air flue 3, end cap 7 has air flue air extractor duct 6, wherein, rotate air flue 3 to be communicated with the air flue hole on the IIth seal ring 10 respectively with upper static air flue 4, form the first air flue, lower static air flue 5 gentle road air extractor duct 6 is all communicated with cavity 8, forms the second air flue.
Although propose a kind of steering swivel does not arrange air flue technical scheme at shaft strength place in foregoing invention patent, but this technical scheme imperfection, also there is following defect: 1, rotate air flue and stretched out outside the body of wheel hub, steeraxle inside outside hub body forms air flue pipeline, because the space of steeraxle inside is less, can not be used for arranging air flue pipeline, and the region outside hub body arranges that air flue pipeline also can affect the kinetic balance of wheel hub; 2, in order to ensure the intensity of steering swivel, on steering swivel upper static air flue air hatch to the distance between hub bearing usually design very little, just do not have enough spaces to arrange two symmetrical the Ith seal rings at all; 3, in the process kind dismantling steering swivel and wheel hub, be difficult to avoid bearing inner ring and seal ring to interfere, easily make seal ring impaired.
Summary of the invention
The purpose of this utility model is unreasonable for the gas circuit structure layout of existing central inflation/deflation; cause that the structural strength of steering swivel is poor, service life is low; the disassembly process of assembly is complicated, assembly dismounting time gas seal member damageable shortcoming, provide that a kind of gas circuit structure is rationally distributed, slewing journal structure intensity is high, the disassembly process of long service life, assembly simple, assembly dismounting time gas seal member can better be protected and the gas circuit structure of the better central inflation/deflation of the structural compactness of each assembly.
For achieving the above object, technical solution of the present utility model is:
A kind of gas circuit structure of central inflation/deflation, comprise wheel hub, by neck bearing and outer bearing, steering swivel is installed in described wheel hub, the internal placement of described steering swivel has upper static air flue, the internal placement of described wheel hub has rotation air flue, described upper static air flue is connected by transition air flue with rotation air flue, described transition air flue is cut off the gap between wheel hub and steering swivel by the first seal ring and the second seal ring and is formed, in the first described seal ring and the second gap of seal ring placed coaxial between wheel hub and steering swivel, and between described neck bearing and wheel hub inner end surface, described first seal ring is greater than the axial distance of described second seal ring to neck bearing to the axial distance of neck bearing,
The root of described upper static air flue low damage joint rises, and extends to the position between the first seal ring resettlement place and the second seal ring resettlement place on steering swivel, is connected with described transition air flue; Described rotation air flue, from the outer face of wheel hub, extends to the position between the first seal ring resettlement place and the second seal ring resettlement place on wheel hub, is connected with transition air flue.
Further, the internal diameter of described first seal ring is greater than the internal diameter of described second seal ring, and the external diameter of described first seal ring is greater than the external diameter of described second seal ring; Described steering swivel is provided with first order step and second stage step, and described wheel hub is provided with the third stage step corresponding with described first order step, and described wheel hub is provided with the fourth stage step corresponding with described second stage step;
The first described seal ring is placed in the gap between first order step and third stage step, endplay between described first order step and third stage step is less than the thickness of the first seal ring, the step surface of described first order step contacts with an end face of the first seal ring, and the step surface of described third stage step contacts with the other end of the first seal ring;
The second described seal ring is placed in the gap between the second shape step and fourth stage step, endplay between described second stage step and fourth stage step is less than the thickness of the second seal ring, the described step surface of the second shape step contacts with an end face of the second seal ring, and the step surface of described fourth stage step contacts with the other end of the second seal ring;
Described rotation air flue is switched to the position between third stage step and fourth stage step, and described upper static air flue is switched to the position between first order ring-shaped step and second stage ring-shaped step.
Further, described neck bearing and outer bearing are unit wheel bearing.
Compared with prior art, the beneficial effects of the utility model are:
1. the utility model is not at the load location arrangements air flue of steering swivel head bearing, improves the structural strength of steering swivel, improves structural stability of the present utility model, extend service life of the present utility model;
2. transition air flue is moved to the position between neck bearing and wheel hub inner end surface by the utility model, make static air flue that original so length need not be set and can realize the connection with transition air flue, effectively shorten the length of static air flue, further increase the structural stability of steering swivel;
3. transition air flue is moved to the outside of neck bearing and outer bearing by the utility model, and the gap adopting the mode of small one and large one two seal rings placed coaxial to seal between partition wheel hub and steering swivel forms transition air flue, this structure is while effectively ensure that transition air flue leak tightness and slewing journal structure intensity, the fitting process of wheel hub, bearing and seal ring is also made to become more simple, making seal ring not easily damaged when dismantling, reducing the assembly cost of the assembling of wheel hub, bearing and seal ring and the maintenance, repair cost of bearing and seal ring;
4. the neck bearing in the utility model and outer bearing all adopt unit wheel bearing, make structure of the present utility model compacter;
5. the utility model is rationally distributed, slewing journal structure intensity is high, the disassembly process of simple, each assembly of long service life, structure is simple, assembly dismounting time gas seal member can better be protected and the compact conformation of each assembly.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of prior art;
Fig. 2 is the schematic diagram of the another kind of structure of prior art;
Fig. 3 is schematic diagram of the present utility model;
In figure, steering swivel 1, wheel hub 2, rotates air flue 3, upper static air flue 4, lower static air flue 5, air flue air extractor duct 6, end cap 7, cavity 8, the Ith seal ring the 9, II seal ring 10, neck bearing 11, outer bearing 12, transition air flue 13, first seal ring 14, second seal ring 15, first ring-shaped step 16, second ring-shaped step the 17, three ring-shaped step the 18, four ring-shaped step 19.
Detailed description of the invention
Illustrate below in conjunction with accompanying drawing and with specific embodiment mode, the utility model to be described in further detail.
See Fig. 3, a kind of gas circuit structure of central inflation/deflation, comprise wheel hub 2, by neck bearing 11 and outer bearing 12, steering swivel 1 is installed in described wheel hub 2, the internal placement of described steering swivel 2 has upper static air flue 4, the internal placement of described wheel hub 2 has rotation air flue 3, described upper static air flue 4 is connected by transition air flue 13 with rotation air flue 3, described transition air flue 13 is cut off the gap between wheel hub 2 and steering swivel 1 by the first seal ring 14 and the second seal ring 15 and is formed, in the first described seal ring 14 and the second gap of seal ring 15 placed coaxial between wheel hub 2 and steering swivel 1, the first seal ring 14 simultaneously and the region of the second seal ring 15 also between described neck bearing 11 and wheel hub 2 inner end surface, described first seal ring 14 is greater than the axial distance of described second seal ring 15 to neck bearing 11 to the axial distance of neck bearing 11,
The root of described upper static air flue 4 low damage joint 1 rises, and extends to the position between the first seal ring 14 resettlement place and the second seal ring 15 resettlement place on steering swivel 1, is connected with described transition air flue 13; Described rotation air flue 3, from the outer face of wheel hub 2, extends to the position between the first seal ring 14 resettlement place and the second seal ring 15 resettlement place on wheel hub 2, is connected with transition air flue 13.
The utility model by upper static air flue 4 with rotate that air flue 3 is connected transition air flue 13 be located at region outside neck bearing 11 and outer bearing 12, avoid steering swivel 1 static air flue 4 in the load location arrangements of bearing, steering swivel 1 is made to have better structural strength, make the utility model have better structural stability, extend the life-span of the present utility model.Meanwhile, due to the inner end surface direction of transition air flue 13 to wheel hub 2 is moved, make static air flue 4 that original so length need not be set and can realize the connection with transition air flue 13, further increase the structural strength of steering swivel 1.
Preferably, the internal diameter of described first seal ring 14 is greater than the internal diameter of described second seal ring 15, and the external diameter of described first seal ring 14 is greater than the external diameter of described second seal ring 15; Described steering swivel 1 is provided with first order step 16 and second stage step 17, and described wheel hub 2 is provided with the third stage step 18 corresponding with described first order step 16, and described wheel hub 2 is provided with the fourth stage step 19 corresponding with described second stage step 17;
The first described seal ring 14 is placed in the gap between first order step 16 and third stage step 18, endplay between described first order step 16 and third stage step 18 is less than the thickness of the first seal ring 14, the step surface of described first order step 16 contacts with an end face of the first seal ring 14, and the step surface of described third stage step 18 contacts with the other end of the first seal ring 14;
The second described seal ring 15 is placed in the gap between the second shape step 17 and fourth stage step 19, endplay between described second stage step 17 and fourth stage step 19 is less than the thickness of the second seal ring 15, the step surface of described second shape step 17 contacts with an end face of the second seal ring 15, and the step surface of described fourth stage step 19 contacts with the other end of the second seal ring 15;
Described rotation air flue 3 is switched to the position between third stage step 18 and fourth stage step 19, and described upper static air flue 4 is switched to the position between first order ring-shaped step 16 and second stage ring-shaped step 17.Described transition air flue 13 is cut off the circular clearance between described wheel hub 2 and steering swivel 1 by the first seal ring 14 and the second seal ring 15 and is formed.
The utility model adopts the mode of small one and large one two seal ring placed coaxial to carry out sealing to upper static air flue 4 and rotation air flue 3 and connects, and sealing cuts off the pyramidal structure that mode effectively can retain steering swivel 1 root, effectively ensures the structural strength of steering swivel 1; Also make the fitting process of wheel hub, bearing and seal ring become more simple simultaneously, making seal ring not easily damaged when dismantling, reducing the assembly cost of the assembling of wheel hub, bearing and seal ring and the maintenance, repair cost of bearing and seal ring.
Preferably, described neck bearing 11 and outer bearing 12 are unit wheel bearing, make structure of the present utility model compacter.
In the utility model by the static gas circuit structure to motion be: the upper static air flue 4 first on static steering swivel 1, transition air flue 13 again through being cut off the gap between described wheel hub 2 and steering swivel 1 by described first seal ring 14 and the second seal ring 15 and formed, connected through the rotation air flue 3 be arranged on wheel hub 2 again by described transition air flue 13, finally lead to tire.
Above content is the further description done the utility model in conjunction with detailed description of the invention; can not think that concrete enforcement of the present utility model is confined to these explanations; for the utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; the simple replacement made, all should be considered as belonging to protection domain of the present utility model.
Claims (3)
1. the gas circuit structure of a central inflation/deflation, comprise wheel hub (2), by neck bearing (11) and outer bearing (12), steering swivel (1) is installed in described wheel hub (2), the internal placement of described steering swivel (2) has upper static air flue (4), the internal placement of described wheel hub (2) has rotation air flue (3), described upper static air flue (4) is connected by transition air flue (13) with rotation air flue (3), described transition air flue (13) is cut off the gap between wheel hub (2) and steering swivel (1) by the first seal ring (14) and the second seal ring (15) and is formed, it is characterized in that: in described the first seal ring (14) and the gap of the second seal ring (15) placed coaxial between wheel hub (2) and steering swivel (1), and be positioned between described neck bearing (11) and wheel hub (2) inner end surface, described first seal ring (14) is greater than the axial distance of described second seal ring (15) to neck bearing (11) to the axial distance of neck bearing (11),
The root of described upper static air flue (4) low damage joint (1) rises, and extends to the position between upper first seal ring (14) resettlement place of steering swivel (1) and the second seal ring (15) resettlement place, is connected with described transition air flue (13); The outer face of described rotation air flue (3) from wheel hub (2), extend to the position between upper first seal ring (14) resettlement place of wheel hub (2) and the second seal ring (15) resettlement place, be connected with transition air flue (13).
2. the gas circuit structure of a kind of central inflation/deflation according to claim 1, it is characterized in that: the internal diameter of described first seal ring (14) is greater than the internal diameter of described second seal ring (15), the external diameter of described first seal ring (14) is greater than the external diameter of described second seal ring (15); Described steering swivel (1) is provided with first order step (16) and second stage step (17), described wheel hub (2) is provided with the third stage step (18) corresponding with described first order step (16), and described wheel hub (2) is provided with the fourth stage step (19) corresponding with described second stage step (17);
Described the first seal ring (14) is placed in the gap between first order step (16) and third stage step (18), endplay between described first order step (16) and third stage step (18) is less than the thickness of the first seal ring (14), the step surface of described first order step (16) contacts with an end face of the first seal ring (14), and the step surface of described third stage step (18) contacts with the other end of the first seal ring (14);
Described the second seal ring (15) is placed in the gap between the second shape step (17) and fourth stage step (19), endplay between described second stage step (17) and fourth stage step (19) is less than the thickness of the second seal ring (15), the step surface of described second shape step (17) contacts with an end face of the second seal ring (15), and the step surface of described fourth stage step (19) contacts with the other end of the second seal ring (15);
Described rotation air flue (3) is switched to the position between third stage step (18) and fourth stage step (19), and described upper static air flue (4) is switched to the position between first order ring-shaped step (16) and second stage ring-shaped step (17).
3. the gas circuit structure of a kind of central inflation/deflation according to claim 1, is characterized in that: described neck bearing (11) and outer bearing (12) are unit wheel bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420641338.0U CN204196602U (en) | 2014-10-31 | 2014-10-31 | Gas circuit structure of central authorities' gassing of filling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420641338.0U CN204196602U (en) | 2014-10-31 | 2014-10-31 | Gas circuit structure of central authorities' gassing of filling |
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| CN204196602U true CN204196602U (en) | 2015-03-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004264A (en) * | 2015-03-31 | 2016-10-12 | 美驰重型车系统卡梅里有限责任公司 | Actuator |
| CN107914528A (en) * | 2017-11-15 | 2018-04-17 | 山东蓬翔汽车有限公司 | A kind of vehicle bridge for carrying central air-charging and air-discharging system |
| CN109070662A (en) * | 2016-02-19 | 2018-12-21 | 意大利德纳有限责任公司 | Rotary feed-through component for tire inflation system |
| CN111030350A (en) * | 2019-12-30 | 2020-04-17 | 东风汽车集团有限公司 | Integrated central charging and discharging electric hub |
-
2014
- 2014-10-31 CN CN201420641338.0U patent/CN204196602U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004264A (en) * | 2015-03-31 | 2016-10-12 | 美驰重型车系统卡梅里有限责任公司 | Actuator |
| CN106004264B (en) * | 2015-03-31 | 2018-04-27 | 美驰重型车系统卡梅里有限责任公司 | Actuator |
| US10137746B2 (en) | 2015-03-31 | 2018-11-27 | Meritor Heavy Vehicle Systems Cameri Spa | Actuator |
| CN109070662A (en) * | 2016-02-19 | 2018-12-21 | 意大利德纳有限责任公司 | Rotary feed-through component for tire inflation system |
| US11034195B2 (en) | 2016-02-19 | 2021-06-15 | Dana Italia S.R.L. | Rotary feedthrough assembly for a tire inflation system |
| CN107914528A (en) * | 2017-11-15 | 2018-04-17 | 山东蓬翔汽车有限公司 | A kind of vehicle bridge for carrying central air-charging and air-discharging system |
| CN107914528B (en) * | 2017-11-15 | 2024-04-05 | 山东蓬翔汽车有限公司 | Axle carrying central inflation and deflation system |
| CN111030350A (en) * | 2019-12-30 | 2020-04-17 | 东风汽车集团有限公司 | Integrated central charging and discharging electric hub |
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