CN215487651U - Wet normally closed parking brake with double oil seal labyrinth structure - Google Patents
Wet normally closed parking brake with double oil seal labyrinth structure Download PDFInfo
- Publication number
- CN215487651U CN215487651U CN202120617759.XU CN202120617759U CN215487651U CN 215487651 U CN215487651 U CN 215487651U CN 202120617759 U CN202120617759 U CN 202120617759U CN 215487651 U CN215487651 U CN 215487651U
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- Prior art keywords
- brake
- friction plate
- plate
- spring
- shaft
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- 239000004677 Nylon Substances 0.000 claims abstract description 8
- 229920001778 nylon Polymers 0.000 claims abstract description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920001971 elastomer Polymers 0.000 claims abstract description 6
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 6
- 239000011737 fluorine Substances 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Images
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Braking Arrangements (AREA)
- Sealing Of Bearings (AREA)
Abstract
The utility model discloses a wet normally closed parking brake with a double oil seal labyrinth structure, which comprises a brake shaft, wherein the brake shaft is connected with a brake wheel through an external spline, bearings, a brake shell and a brake seat are assembled at two sides of the brake shaft and the brake wheel, connecting flanges are installed at two outer sides of the brake shaft, a spring is installed in the brake shell, the spring is connected with a friction plate seat, a friction plate and a brake plate are installed on the friction plate seat, the friction plate is connected with the brake wheel through the spline, the other ends of the friction plate and the brake plate are limited through a pressing plate, the pressing plate is connected with a piston, one side of the brake shell is assembled into a whole through a gasket, an inner hexagon screw and an elastic pad, and is positioned and assembled through a positioning pin and a cylindrical pin; two sides of the brake shaft are sealed by a framework oil seal and a framework fluorine rubber oil seal, and the inside of the brake shaft is sealed by an O-shaped ring and a nylon check ring. The utility model realizes braking by compressing the friction plate through the spring, and optimizes the sealing structure.
Description
Technical Field
The utility model relates to a brake, in particular to a wet normally-closed parking brake with a double-oil-seal labyrinth structure.
Background
In the field of mine axles, the wheel loader has large mass, large driving inertia and severe working conditions, and needs particularly effective braking when parking to ensure the safety of parking. Especially, when the loader is parked on a slope, the parking brake is more important. So we now face the following problems: how to design and optimize the parking brake makes the whole structure more compact; how to prevent the phenomenon of vehicle slipping caused by insufficient braking torque when the loader is braked in a slope when fully loaded, and effectively improve the braking and safety performance of the whole vehicle; how to promote and optimize the performance of seal structure, strengthen parking brake and adapt to the ability of working in the abominable operating mode such as being full of dust, high temperature high pressure high rotational speed, etc..
Disclosure of Invention
In order to solve the problems related to the technical background, the utility model provides a wet type normally closed parking brake with a double oil seal labyrinth structure.
The specific technical scheme of the utility model is as follows: a wet type normally closed parking brake with a double oil seal labyrinth structure comprises a brake shaft, wherein the brake shaft is connected with a brake wheel through an external spline, the two sides of the brake shaft and the brake wheel are provided with a bearing, a brake shell and a brake seat, the two outer sides of the brake shaft are provided with connecting flanges, a spring hole is arranged in the brake shell, a spring is arranged in the spring hole, the other side of the spring is pressed on the friction sheet seat, the friction plate seat is provided with a friction plate and a brake plate which are arranged in sequence, one end of the friction plate and one end of the brake plate are sequentially pressed on the friction plate seat, the other end of the friction plate and the brake plate are limited by the pressure plate, the friction plate is connected with the brake wheel through a spline, the pressing plate is connected with the piston, one side of the brake shell is assembled into a whole through a gasket, an inner hexagon screw and an elastic pad, and positioning assembly is carried out through a positioning pin and a cylindrical pin; two sides of the brake shaft are sealed by a framework oil seal and a framework fluorine rubber oil seal, and the interior of the brake shaft is sealed by an O-shaped ring and a nylon check ring.
Furthermore, connecting flanges are installed on the two outer sides of the brake shaft, the bottom of each flange forms labyrinth seal with the brake shell and the brake seat through a limiting plate, and the flanges are connected with the brake shaft through a flange pressing plate, an inner hexagon screw and a gasket.
Further, the friction plate is a copper-based friction plate.
Further, the bearing is a universal bearing.
Further, the spring comprises a large spring and a small spring.
The utility model has the beneficial effects that: adopt classic normally closed brake structure, realize the braking through spring compression friction disc, optimize parking brake's seal structure, guarantee that wet-type normally closed parking brake can both satisfy various operating requirements under comparatively more abominable operating mode conditions such as on the ore deposit, in the pit, the installation of parking brake both sides has adopted the installation form of bolt increased pressure board, has prevented on the one hand that both sides flange makes a round trip to drunkenness and has caused the abnormal sound, and the clamp plate also makes the upper effort easily in addition, makes the difficult fracture of brake shaft.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of the present invention;
in the figure: 1. the flange 2, the flange pressing plate 3, the brake shaft 4, the first limiting plate 5, the framework oil seal 6, the framework fluorine rubber oil seal 7, the large spring 8, the small spring 9, the friction plate 10, the brake pad 11, the friction plate seat 12, the first gasket 13, the first hexagonal screw 14, the elastic pad 15, the first O-ring 16, the first nylon retainer ring 17, the bearing 18, the second limiting plate 19, the second hexagon socket screw 20, the second gasket 21, the brake seat 22, the piston 23, the second O-ring 24, the second nylon retainer ring 25, the positioning pin 26, the pressing plate 27, the cylindrical pin 28, the brake wheel 29, the brake housing 30, the hexagon socket screw plug 31, the sealing element 32, the hexagon socket screw plug 33, the automatic centering combined sealing element 34, the vent plug 36, the hexagon socket screw plug 37 and the sealing element.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
As shown in fig. 1 and 2, a wet type normally closed parking brake with a double oil seal labyrinth structure comprises a brake shaft 3, the brake shaft 3 is connected with a brake wheel 28 through an external spline, bearings 17, a brake shell 29 and a brake seat 21 are assembled on two sides of the brake shaft 3 and the brake wheel 28, the bearings 17 are universal bearings, connecting flanges 1 are installed on two outer sides of the brake shaft 3, a spring hole is formed in the brake shell 29, a spring is installed in the spring hole, the spring comprises a large spring 7 and a small spring 8, the other side of the spring is pressed on a friction plate seat 11, a friction plate 9 and a brake plate 10 are installed on the friction plate seat 11, the friction plate 9 is a copper-based friction plate, the friction plate 9 and the brake plate 10 are sequentially arranged, one end of the friction plate 9 and one end of the brake plate 10 are sequentially pressed on the friction plate seat 11, the other end of the friction plate is limited through a pressure plate 26, the friction plate 9 is connected with the brake wheel 28 through a spline, the pressure plate 26 is connected with a piston 22, one side of the brake shell 29 is assembled into a whole through a first gasket 12, a first socket head cap screw 13 and a spring washer 14, and is positioned and assembled through a positioning pin 25 and a cylindrical pin 27; two sides of the brake shaft 3 are sealed by a framework oil seal 5 and a framework fluorine rubber oil seal 6, and the inside of the brake shaft is sealed by an O-shaped ring I15, an O-shaped ring II 23, a nylon retainer ring I16 and a nylon retainer ring II 24.
The copper-based friction plate is adopted on the basis of meeting the requirement of the braking torque of a main engine plant, has better mechanical impact performance and heat transfer performance compared with paper base and other friction plates, has lower requirement on the cleanliness of oil, and is more suitable for being used under relatively severe working conditions.
The environment on the ore deposit or in the pit is all relatively poor, and parking brake all can be basically moved under the abominable operating mode of high temperature high pressure high rotational speed and the dust that is full of, and the phenomenon of oil leak oil impregnate often can appear, so to the requirement of seal structure than higher, therefore this patent satisfies the requirement through the sealed dual fail-safe mode of two oil blanket plus labyrinth structure. As shown in figure 1, two oil seals are respectively used for sealing and installing at the stopping parts of the brake shell 29 and the brake seat 21 at two sides of the brake, and the framework fluorine rubber oil seal 6 is adopted at the inner ring. The fluororubber has good wear resistance, excellent heat resistance and oil resistance, is widely applied to applications requiring quality, such as aerospace, automobile industry and general industry, and plays the first role in preventing oil leakage in the parking brake. The outer ring uses a common framework oil seal 5, the material is nitrile rubber, the main function is to increase the protection of the inner ring oil seal under the condition of high temperature and high pressure, and in addition, the dust and the like are prevented from permeating into the brake. On the basis of the double-framework oil seal, a labyrinth seal is formed by the first limit plate 4, the second limit plate 18, the brake shell 29 and the brake seat 21. Labyrinth seal compares sealed form structures such as oil blanket seal, mechanical seal comparatively simple, is a non-contact seal, utilizes the processing of spare part just can reach the requirement, and two limiting plates have played spacing installation effect to the flange of both sides on the one hand, and on the other hand forms relative confined structure, and the main function also prevents inside infiltration structures such as dust, granule, is that seal structure's second way is insurance.
In addition, the installation form of the bolt pressurizing plates is adopted in the installation of the two sides of the parking brake, on one hand, abnormal sound caused by the back-and-forth movement of the connecting flanges on the two sides is prevented, and in addition, the pressing plates are easy to apply force, so that the brake shaft is not easy to break.
The foregoing is illustrative of the present invention and its embodiments, and the description is not limiting. The embodiment shown in the drawings is only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, without departing from the spirit of the present invention, a person skilled in the art shall appreciate that the present invention shall not be limited to the embodiments shown in the drawings.
Claims (5)
1. The utility model provides a two oil blanket labyrinth structure's wet-type normally closed parking brake which characterized in that: the brake comprises a brake shaft (3), the brake shaft (3) is connected with a brake wheel (28) through an external spline, bearings (17), a brake shell (29) and a brake seat (21) are assembled on two sides of the brake shaft (3) and the brake wheel (28), a connecting flange (1) is installed on two outer sides of the brake shaft (3), a spring hole is formed in the brake shell (29), a spring is installed in the spring hole, the other side of the spring is pressed on a friction plate seat (11), a friction plate (9) and a brake plate (10) are installed on the friction plate seat (11), the friction plate (9) and the brake plate (10) are sequentially arranged, one end of each of the friction plate (9) and the brake plate (10) is sequentially pressed on the friction plate seat (11), the other end of each of the friction plate (9) and the brake wheel (28) is limited through a pressing plate (26), and the friction plate (9) is connected with the brake wheel (28) through a spline, the brake device is characterized in that the pressure plate (26) is connected with the piston (22), one side of the brake shell (29) is assembled into a whole through a first gasket (12), a first socket head cap screw (13) and an elastic pad (14), and positioning assembly is carried out through a positioning pin (25) and a cylindrical pin (27); two sides of the brake shaft (3) are sealed by a framework oil seal (5) and a framework fluorine rubber oil seal (6), and the interior of the brake shaft is sealed by a first O-shaped ring (15), a second O-shaped ring (23), a first nylon check ring (16) and a second nylon check ring (24).
2. The wet type normally closed parking brake with the double oil seals labyrinth structure as claimed in claim 1, characterized in that: the brake device is characterized in that connecting flanges (1) are installed on two outer sides of the brake shaft (3), the bottom of each flange (1) forms labyrinth seal with the brake shell (29) and the brake seat (21) through a first limiting plate (4) and a second limiting plate (18), and the flanges (1) are connected with the brake shaft (3) through a flange pressing plate (2), a second socket head cap screw (19) and a second gasket (20).
3. The wet type normally closed parking brake with the double oil seals labyrinth structure as claimed in claim 1, characterized in that: the friction plate (9) is a copper-based friction plate.
4. The wet type normally closed parking brake with the double oil seals labyrinth structure as claimed in claim 1, characterized in that: the bearing (17) is a universal bearing.
5. The wet type normally closed parking brake with the double oil seals labyrinth structure as claimed in claim 1, characterized in that: the spring comprises a large spring (7) and a small spring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120617759.XU CN215487651U (en) | 2021-03-26 | 2021-03-26 | Wet normally closed parking brake with double oil seal labyrinth structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120617759.XU CN215487651U (en) | 2021-03-26 | 2021-03-26 | Wet normally closed parking brake with double oil seal labyrinth structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215487651U true CN215487651U (en) | 2022-01-11 |
Family
ID=79772962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120617759.XU Active CN215487651U (en) | 2021-03-26 | 2021-03-26 | Wet normally closed parking brake with double oil seal labyrinth structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215487651U (en) |
-
2021
- 2021-03-26 CN CN202120617759.XU patent/CN215487651U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A wet normally closed parking brake with a dual oil seal labyrinth structure Effective date of registration: 20231221 Granted publication date: 20220111 Pledgee: Bank of China Limited by Share Ltd. Xuzhou Copper Mt branch Pledgor: XUZHOU KEYUAN HYDRAULICS Co.,Ltd. Registration number: Y2023320000678 |