CN108204463B - Shaft sealing structure for automobile - Google Patents
Shaft sealing structure for automobile Download PDFInfo
- Publication number
- CN108204463B CN108204463B CN201611188305.5A CN201611188305A CN108204463B CN 108204463 B CN108204463 B CN 108204463B CN 201611188305 A CN201611188305 A CN 201611188305A CN 108204463 B CN108204463 B CN 108204463B
- Authority
- CN
- China
- Prior art keywords
- sealing cylinder
- spring
- fixing bolt
- rotating shaft
- sealing
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 182
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 230000009191 jumping Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000012856 packing Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/54—Other sealings for rotating shafts
Abstract
The invention discloses a shaft sealing structure for an automobile, which comprises a rotating shaft, a left sealing cylinder, a right sealing cylinder, a middle sealing cylinder, a first spring, a second spring, a third spring, a fourth spring, a first fixing bolt, a second fixing bolt and a nut. The invention can ensure that the sealing cylinders at the two sides of the rotating shaft have the same sealing force with the rotating shaft, and avoid the sealing cylinders from being worn due to the jumping of the rotating shaft. The nut is used for avoiding the middle sealing cylinder from sliding in a large range. The first spring, the second spring, the third spring and the fourth spring are used for absorbing partial radial force generated when the rotating shaft jumps, and the service life of the sealing cylinder is further prolonged. The third spring and the fourth spring can also play a role in preventing loosening of the nut. The inner surface of the sealing cylinder is provided with an annular groove which is used for providing a compression allowance when the sealing cylinder is compressed, so that the sealing cylinder is prevented from being compressed and broken.
Description
Technical Field
The present invention relates to a shaft seal structure for an automobile.
Background
The traditional shaft sealing structure is characterized in that a packing is arranged between the sealing cylinder and the rotating shaft, then the packing is compressed by extending the left pressing plate and the right pressing plate into the space between the sealing cylinder and the rotating shaft, so that the packing is tightly attached to the rotating shaft, and a gap between the packing and the rotating shaft is eliminated, thereby achieving the purpose of sealing. In the traditional shaft sealing structure, a sealing cylinder is fixedly connected with a left pressing plate and a right pressing plate, so that when the rotating shaft is subjected to radial runout, the rotating shaft can compress filler positioned on one side of the rotating shaft, the filler on the other side of the rotating shaft can be loosened, and therefore the filler is easy to wear, and sealing failure is caused.
Disclosure of Invention
The object of the present invention is to overcome the above problems of the prior art and to provide a shaft seal structure for an automobile.
The aim of the invention is mainly realized by the following technical scheme:
the shaft sealing structure for the automobile comprises a rotating shaft, a left sealing cylinder, a right sealing cylinder, a middle sealing cylinder, a first spring, a second spring, a third spring, a fourth spring, a first fixing bolt, a second fixing bolt and a nut;
the middle sealing cylinder is sleeved on the rotating shaft, and an annular sealing space is arranged between the middle sealing cylinder and the rotating shaft; the left sealing cylinder and the right sealing cylinder are sleeved on the rotating shaft, and are respectively positioned at the left side and the right side of the middle sealing cylinder; one end of each of the left sealing cylinder and the right sealing cylinder extends into the sealing space; the sealing cylinder is sleeved on the rotating shaft and is positioned in the sealing space; the inner surface of the sealing cylinder is provided with a plurality of annular grooves;
the first fixing bolt penetrates through the middle sealing cylinder in the radial direction and is connected with the left sealing cylinder; the first fixing bolt is slidably matched with the middle sealing cylinder; the first spring is sleeved on the first fixing bolt and is positioned between the middle sealing cylinder and the left sealing cylinder; the second fixing bolt penetrates through the middle sealing cylinder in the radial direction and is connected with the right sealing cylinder; the second fixing bolt is slidably matched with the middle sealing cylinder; the second spring is sleeved on the second fixing bolt and is positioned between the middle sealing cylinder and the right sealing cylinder; the nut is connected with one end, far away from the rotating shaft, of the first fixing bolt and the second fixing bolt;
the third spring is sleeved on the first fixing bolt and is positioned between the nut and the middle sealing cylinder; the fourth spring is sleeved on the second fixing bolt and is positioned between the nut and the middle sealing cylinder.
The working principle of the invention is as follows:
when the rotating shaft jumps, the rotating shaft applies larger force to the sealing cylinder at one side of the rotating shaft, at the moment, the sealing cylinder transmits the force to the middle sealing cylinder, and the middle sealing cylinder overcomes the elastic force of the first spring and the second spring to generate micro sliding in the radial direction of the rotating shaft. In this way, the seal cartridge compressed by the shaft will obtain more space and will not be over compressed. Meanwhile, the sealing cylinders at the other side of the rotating shaft are compressed, so that the sealing cylinders at the two sides of the rotating shaft are guaranteed to have the same sealing force with the rotating shaft, and the sealing cylinders are prevented from being worn due to jumping of the rotating shaft. The nut is used for avoiding the middle sealing cylinder from sliding in a large range. The first spring, the second spring, the third spring and the fourth spring are used for absorbing partial radial force generated when the rotating shaft jumps, and the service life of the sealing cylinder is further prolonged. The third spring and the fourth spring can also play a role in preventing loosening of the nut. The inner surface of the sealing cylinder is provided with an annular groove which is used for providing a compression allowance when the sealing cylinder is compressed, so that the sealing cylinder is prevented from being compressed and broken.
Further, the inner surface of the middle sealing cylinder is provided with a plurality of circular ring grooves extending around the axis of the rotating shaft.
The circular groove is arranged, the sealing cylinder is embedded into the circular groove under the action of pressure, and the sealing performance between the sealing cylinder and the inner surface of the middle sealing cylinder is improved.
Further, the end face of one end of the left sealing cylinder extending into the sealing space is a protruding arc surface;
the end face of one end of the right sealing cylinder extending into the sealing space is a convex arc face.
The left sealing cylinder and the right sealing cylinder are both provided with arc surfaces, no sharp angle exists, and the sealing cylinder is prevented from being broken due to the sharp angle at the end parts of the left sealing cylinder and the right sealing cylinder.
Further, two ends of the first fixing bolt are threaded sections, and the middle part of the first fixing bolt is a smooth section which is slidably matched with the middle sealing cylinder;
the two ends of the second fixing bolt are threaded sections, and the middle part of the second fixing bolt is a smooth section which is slidably matched with the middle sealing cylinder.
The first fixing bolt and the second fixing bolt are respectively provided with a smooth surface which is slidably matched with the middle sealing cylinder, so that the sliding of the middle sealing cylinder is smoother, and the reaction is more sensitive.
The invention has the following beneficial effects:
1. when the rotating shaft jumps, the rotating shaft applies larger force to the sealing cylinder at one side of the rotating shaft, at the moment, the sealing cylinder transmits the force to the middle sealing cylinder, and the middle sealing cylinder overcomes the elastic force of the first spring and the second spring to generate micro sliding in the radial direction of the rotating shaft. In this way, the seal cartridge compressed by the shaft will obtain more space and will not be over compressed. Meanwhile, the sealing cylinders at the other side of the rotating shaft are compressed, so that the sealing cylinders at the two sides of the rotating shaft are guaranteed to have the same sealing force with the rotating shaft, and the sealing cylinders are prevented from being worn due to jumping of the rotating shaft. The nut is used for avoiding the middle sealing cylinder from sliding in a large range. The first spring, the second spring, the third spring and the fourth spring are used for absorbing partial radial force generated when the rotating shaft jumps, and the service life of the sealing cylinder is further prolonged. The third spring and the fourth spring can also play a role in preventing loosening of the nut. The inner surface of the sealing cylinder is provided with an annular groove which is used for providing a compression allowance when the sealing cylinder is compressed, so that the sealing cylinder is prevented from being compressed and broken.
2. The circular groove is arranged, the sealing cylinder is embedded into the circular groove under the action of pressure, and the sealing performance between the sealing cylinder and the inner surface of the middle sealing cylinder is improved.
3. The left sealing cylinder and the right sealing cylinder are both provided with arc surfaces, no sharp angle exists, and the sealing cylinder is prevented from being broken due to the sharp angle at the end parts of the left sealing cylinder and the right sealing cylinder.
4. The first fixing bolt and the second fixing bolt are respectively provided with a smooth surface which is slidably matched with the middle sealing cylinder, so that the sliding of the middle sealing cylinder is smoother, and the reaction is more sensitive.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings that are required for describing the embodiments of the present invention will be briefly described. It is apparent that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained from the following drawings without inventive labor for those skilled in the art.
FIG. 1 is a schematic view of a shaft seal structure for an automobile in an embodiment of the invention;
wherein, the spare part names that the reference numerals correspond to are as follows:
10-rotating shaft, 20-left sealing cylinder, 30-right sealing cylinder, 40-middle sealing cylinder, 41-circular groove, 50-sealing cylinder, 51-circular groove, 61-first spring, 62-second spring, 63-third spring, 64-fourth spring, 71-first fixing bolt, 72-second fixing bolt and 80-nut.
Detailed Description
In order to enable those skilled in the art to better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the embodiments described below are only some, but not all, of the embodiments of the present invention. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are within the scope of the present invention based on the embodiments described herein.
Example 1
As shown in fig. 1, the shaft sealing structure for an automobile includes a rotary shaft 10, a left seal cartridge 20, a right seal cartridge 30, a middle seal cartridge 40, a seal cartridge 50, a first spring 61, a second spring 62, a third spring 63, a fourth spring 64, a first fixing bolt 71, a second fixing bolt 72, and a nut 80;
the middle sealing cylinder 40 is sleeved on the rotating shaft 10, and an annular sealing space is arranged between the middle sealing cylinder 40 and the rotating shaft 10; the left sealing cylinder 20 and the right sealing cylinder 30 are sleeved on the rotating shaft 10, and the left sealing cylinder 20 and the right sealing cylinder 30 are respectively positioned at the left side and the right side of the middle sealing cylinder 40; one end of each of the left seal cartridge 20 and the right seal cartridge 30 extends into the seal space; the sealing cylinder 50 is sleeved on the rotating shaft 10 and is positioned in the sealing space; the inner surface of the sealing cylinder 50 is provided with a plurality of annular grooves 51;
the first fixing bolt 71 penetrates the middle seal cartridge 40 in a radial direction and is connected with the left seal cartridge 20; the first fixing bolt 71 is slidably engaged with the middle seal cartridge 40; the first spring 61 is sleeved on the first fixing bolt 71, and the first spring 61 is positioned between the middle sealing cylinder 40 and the left sealing cylinder 20; the second fixing bolt 72 penetrates the middle seal cartridge 40 in the radial direction to be connected with the right seal cartridge 30; the second fixing bolt 72 is slidably engaged with the middle seal cartridge 40; the second spring 62 is sleeved on the second fixing bolt 72, and the second spring 62 is located between the middle sealing cylinder 40 and the right sealing cylinder 30; the nut 80 is connected to one end of the first fixing bolt 71 and the second fixing bolt 72 away from the rotating shaft 10;
the third spring 63 is sleeved on the first fixing bolt 71, and the third spring 63 is positioned between the nut 80 and the middle sealing cylinder 40; the fourth spring 64 is sleeved on the second fixing bolt 72, and the fourth spring 64 is located between the nut 80 and the middle sealing cylinder 40.
The working principle of the invention is as follows:
when the rotating shaft 10 is jumped, the rotating shaft 10 applies a larger force to the seal cartridge 50 on one side thereof, and at this time, the seal cartridge 50 transmits the force to the middle seal cartridge 40, and the middle seal cartridge 40 generates a slight sliding in the radial direction of the rotating shaft 10 against the elastic force of the first spring 61 and the second spring 62. In this way, the seal cartridge 50 compressed by the rotary shaft 10 will obtain a larger space so as not to be excessively compressed. Meanwhile, the sealing cylinder 50 at the other side of the rotating shaft 10 is compressed, so that the same sealing force is ensured between the sealing cylinders at the two sides of the rotating shaft 10 and the rotating shaft 10, and the sealing cylinder 50 is prevented from being worn due to the jumping of the rotating shaft 10. The nut 80 serves to prevent the middle seal cartridge 40 from sliding widely. The first spring 71, the second spring 72, the third spring 73 and the fourth spring 74 are used for absorbing part of radial force generated when the rotating shaft 10 jumps, so that the service life of the sealing cylinder 50 is further prolonged. The third spring 73 and the fourth spring 74 can also function as a locking function for the nut 80. The inner surface of the sealing cylinder 50 is provided with an annular groove 51 for providing a compression margin when the sealing cylinder 50 is compressed, so as to avoid the sealing cylinder 50 from being broken by compression.
Example 2:
as shown in fig. 1, in this embodiment, on the basis of embodiment 1, the inner surface of the middle sealing cylinder 40 is provided with a plurality of circular grooves 41 extending around the axis of the rotating shaft 10.
The circular groove 41 is provided, and the sealing cylinder 50 is embedded into the circular groove 41 under the action of pressure, so that the sealing performance between the sealing cylinder 50 and the inner surface of the middle sealing cylinder 40 is improved.
Example 3:
as shown in fig. 1, in this embodiment, on the basis of embodiment 1 or 2, an end surface of one end of the left sealing cylinder 20 extending into the sealing space is a protruding arc surface;
the end surface of one end of the right sealing cylinder 30 extending into the sealing space is a convex arc surface.
The left seal cartridge 20 and the right seal cartridge 30 are provided with arc surfaces, no sharp angle exists, and the seal cartridge 50 is prevented from being broken due to sharp angles at the end parts of the left seal cartridge 20 and the right seal cartridge 30.
Example 4:
as shown in fig. 1, in this embodiment, on the basis of embodiment 1, 2 or 3, both ends of the first fixing bolt 71 are threaded sections, and a middle portion of the first fixing bolt 71 is a smooth section slidably engaged with the middle sealing cylinder 40;
the two ends of the second fixing bolt 72 are threaded sections, and the middle part of the second fixing bolt 72 is a smooth section which is slidably matched with the middle sealing cylinder 40.
The first fixing bolt 71 and the second fixing bolt 72 each have a smooth surface slidably engaged with the middle seal cartridge 40, so that the middle seal cartridge 40 slides more smoothly and the reaction is more sensitive.
The foregoing is a further detailed description of the invention in connection with specific preferred embodiments, and it is not intended that the invention be limited to these descriptions. Other embodiments of the invention, which are apparent to those skilled in the art to which the invention pertains without departing from its technical scope, shall be covered by the protection scope of the invention.
Claims (2)
1. A axle seal structure for car, its characterized in that: the device comprises a rotating shaft (10), a left sealing cylinder (20), a right sealing cylinder (30), a middle sealing cylinder (40), a sealing cylinder (50), a first spring (61), a second spring (62), a third spring (63), a fourth spring (64), a first fixing bolt (71), a second fixing bolt (72) and a nut (80);
the middle sealing cylinder (40) is sleeved on the rotating shaft (10), and an annular sealing space is arranged between the middle sealing cylinder (40) and the rotating shaft (10); the left sealing cylinder (20) and the right sealing cylinder (30) are sleeved on the rotating shaft (10), and the left sealing cylinder (20) and the right sealing cylinder (30) are respectively positioned at the left side and the right side of the middle sealing cylinder (40); one end of each of the left sealing cylinder (20) and the right sealing cylinder (30) extends into the sealing space; the sealing cylinder (50) is sleeved on the rotating shaft (10) and is positioned in the sealing space; the inner surface of the sealing cylinder (50) is provided with a plurality of annular grooves (51);
the first fixing bolt (71) penetrates through the middle sealing cylinder (40) in the radial direction and is connected with the left sealing cylinder (20); the first fixing bolt (71) is slidably matched with the middle sealing cylinder (40); the first spring (61) is sleeved on the first fixing bolt (71), and the first spring (61) is positioned between the middle sealing cylinder (40) and the left sealing cylinder (20); the second fixing bolt (72) penetrates through the middle sealing cylinder (40) in the radial direction and is connected with the right sealing cylinder (30); the second fixing bolt (72) is slidably matched with the middle sealing cylinder (40); the second spring (62) is sleeved on the second fixing bolt (72), and the second spring (62) is positioned between the middle sealing cylinder (40) and the right sealing cylinder (30); the nut (80) is connected with one end of the first fixing bolt (71) and one end of the second fixing bolt (72) which are far away from the rotating shaft (10);
the third spring (63) is sleeved on the first fixing bolt (71), and the third spring (63) is positioned between the nut (80) and the middle sealing cylinder (40); the fourth spring (64) is sleeved on the second fixing bolt (72), and the fourth spring (64) is positioned between the nut (80) and the middle sealing cylinder (40);
the inner surface of the middle sealing cylinder (40) is provided with a plurality of circular grooves (41) extending around the axis of the rotating shaft (10);
the end face of one end of the left sealing cylinder (20) extending into the sealing space is a protruding arc surface;
the end face of one end of the right sealing cylinder (30) extending into the sealing space is a protruding arc face.
2. The shaft seal structure for an automobile according to claim 1, wherein: the two ends of the first fixing bolt (71) are threaded sections, and the middle part of the first fixing bolt (71) is a smooth section which is slidably matched with the middle sealing cylinder (40); the two ends of the second fixing bolt (72) are threaded sections, and the middle part of the second fixing bolt (72) is a smooth section which is slidably matched with the middle sealing cylinder (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611188305.5A CN108204463B (en) | 2016-12-20 | 2016-12-20 | Shaft sealing structure for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611188305.5A CN108204463B (en) | 2016-12-20 | 2016-12-20 | Shaft sealing structure for automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108204463A CN108204463A (en) | 2018-06-26 |
| CN108204463B true CN108204463B (en) | 2024-03-01 |
Family
ID=62604244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611188305.5A Active CN108204463B (en) | 2016-12-20 | 2016-12-20 | Shaft sealing structure for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108204463B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591012A (en) * | 2013-11-12 | 2014-02-19 | 成都科盛石油科技有限公司 | Sealing device capable of being adjusted automatically |
| CN204152777U (en) * | 2014-07-08 | 2015-02-11 | 张红光 | Drilling pump center pull rod leakage proof structure |
| CN205136789U (en) * | 2015-10-21 | 2016-04-06 | 嘉善振杨汽车部件有限公司 | Core shaft sealing mechanism |
| CN205243929U (en) * | 2015-12-22 | 2016-05-18 | 四川丹罗斯环保科技有限公司 | Desulfurization pump double mechanical seal device |
| CN205298549U (en) * | 2015-12-30 | 2016-06-08 | 合肥华升泵阀股份有限公司 | Take packing structure of sealed function of spring pretension |
| CN206290715U (en) * | 2016-12-20 | 2017-06-30 | 重庆乐迪机车车辆配件有限公司 | For the axle sealing structure of automobile |
-
2016
- 2016-12-20 CN CN201611188305.5A patent/CN108204463B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591012A (en) * | 2013-11-12 | 2014-02-19 | 成都科盛石油科技有限公司 | Sealing device capable of being adjusted automatically |
| CN204152777U (en) * | 2014-07-08 | 2015-02-11 | 张红光 | Drilling pump center pull rod leakage proof structure |
| CN205136789U (en) * | 2015-10-21 | 2016-04-06 | 嘉善振杨汽车部件有限公司 | Core shaft sealing mechanism |
| CN205243929U (en) * | 2015-12-22 | 2016-05-18 | 四川丹罗斯环保科技有限公司 | Desulfurization pump double mechanical seal device |
| CN205298549U (en) * | 2015-12-30 | 2016-06-08 | 合肥华升泵阀股份有限公司 | Take packing structure of sealed function of spring pretension |
| CN206290715U (en) * | 2016-12-20 | 2017-06-30 | 重庆乐迪机车车辆配件有限公司 | For the axle sealing structure of automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108204463A (en) | 2018-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204284256U (en) | Picking-up vehicle double-action wet-type hydraulic brake | |
| EP3199845B1 (en) | Sealing structure | |
| CN203384375U (en) | Friction sealing structure adopting hole and shaft fit | |
| CN107869594B (en) | Sealing ring and application thereof | |
| CN108204463B (en) | Shaft sealing structure for automobile | |
| CN203453465U (en) | Sealing nut | |
| CN102562771A (en) | Stop washer | |
| CN108204460B (en) | Movable sealing device for automobile rotating shaft | |
| EP2796742A3 (en) | Caliper body for vehicle disc brake | |
| CN204061903U (en) | The rod seal of ultrahigh pressure new type compound | |
| JP6154889B2 (en) | Split stator casing | |
| CN202579754U (en) | Integral hydraulic brake calipers with three pairs of cylinders | |
| CN204942328U (en) | Press machine axial air clutch | |
| CN104675887A (en) | Wet type multi-disc brake | |
| JP6262961B2 (en) | Sealing device | |
| CN104895966B (en) | The stopping caliper elastic presser feet baffle ring of band | |
| CN206290705U (en) | Car rotation movable sealer | |
| CN205190593U (en) | Single cylinder wheel cylinder | |
| US289776A (en) | James h | |
| CN210799832U (en) | Wear-resistant shock-absorbing caliper piston with powerful protection function | |
| CN205089962U (en) | Sealing washer and seal structure | |
| CN203796817U (en) | Brake pump | |
| CN204900608U (en) | Wheel limit arrestment mechanism's improvement structure | |
| JP6546746B2 (en) | Fluid pressure cylinder | |
| CN204372001U (en) | The cylinder of brake clamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240129 Address after: No. 141, west section of Renmin Road, Changyuan City, Xinxiang City, Henan 453000 Applicant after: HENAN YOUPU SEALING TECHNOLOGY CO.,LTD. Country or region after: China Address before: 402566 Pulu Industrial Park, Tongliang County, Chongqing Applicant before: CHONGQING LEDI LOCOMOTIVE & MOTORCYCLE FITTINGS CO.,LTD. Country or region before: China |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |