CN217633558U - Wet brake with double friction pairs - Google Patents
Wet brake with double friction pairs Download PDFInfo
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- CN217633558U CN217633558U CN202220625519.9U CN202220625519U CN217633558U CN 217633558 U CN217633558 U CN 217633558U CN 202220625519 U CN202220625519 U CN 202220625519U CN 217633558 U CN217633558 U CN 217633558U
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Abstract
The utility model discloses a such wet brake with two friction pairs, for solving have wet brake exist when parking spring or when brake assembly damages, easily cause the potential safety hazard and need big torque brake scheduling problem, the utility model discloses take and be provided with vice I (3) of friction in braking casing I (13), be provided with vice II (7) of friction in braking casing II (10), vice I (3) one side of friction and emergency braking piston (2) a terminal surface contact, vice I (3) opposite side of friction and service braking piston I (5) a terminal surface contact, vice II (7) one side of friction and parking braking piston (8) a terminal surface contact, vice II (7) opposite side of friction and service braking piston II (6) a terminal surface contact, another terminal surface of parking braking piston (8) is through a plurality of brake spring (1) and right braking cylinder cap (9) contact, another terminal surface of emergency braking piston (2) is through a plurality of brake spring (1) and left braking cylinder cap (14) contact.
Description
Technical Field
The utility model relates to a brake especially relates to a wet brake who has two friction pairs who comprises a plurality of dynamic friction pieces, a plurality of static friction piece, a plurality of brake spring, a plurality of return spring, left side braking cylinder cap, right side braking cylinder cap, braking piston, brake housing and braking cylinder body.
Background
Chinese patent CN 214304966U discloses such a wet brake, which has the structural characteristics that: the brake device comprises a shell, a brake assembly, a traveling piston, a parking piston, a return spring and a parking spring; the shell comprises a shaft sleeve, a static shell and a movable shell, wherein the static shell and the movable shell are both sleeved on the shaft sleeve, the static shell is rotatably connected with the shaft sleeve, the movable shell is fixedly connected with the shaft sleeve, a first oil inlet channel and a second oil inlet channel are arranged in the static shell, the static shell is fixed on an automobile, and the shaft sleeve is sleeved on an automobile transmission shaft; the brake assembly comprises a static friction plate and a dynamic friction plate which are oppositely arranged, and the static friction plate and the dynamic friction plate are sleeved on the shaft sleeve and are in sliding connection with the shaft sleeve along the length direction of the shaft sleeve; a cavity communicated with the first oil inlet channel is formed between one side of the travelling crane piston and the static shell, and the other side of the travelling crane piston is abutted against the static friction plate through the return spring; one side of the parking piston is connected with the movable shell through the parking spring, the other side of the parking piston is abutted against the movable friction plate, and a cavity communicated with the second oil inlet channel is formed between the parking piston and the static shell. The driving piston and the parking piston are respectively positioned on two sides of the brake assembly, the driving piston is connected with the shell through a return spring, and the parking piston is connected with the shell through a parking spring. Therefore, when the parking spring damages, easily lead to the parking function to lose, perhaps when the brake assembly damages, easily cause the braking distance overlength, especially when ore hauler advances in this kind of mine operating environment that the abrupt bend of slope is sharp, easily cause the potential safety hazard.
Chinese patent CN213117217U also discloses such a wet brake for large tractor, including casing, main shaft, dynamic friction piece and mechanical bearing seal, first end cover and second end cover are installed respectively to the left and right sides of casing, and the middle part of first end cover installs the main shaft through mechanical bearing seal to there is dynamic friction piece in the outside of main shaft to the key-type connection in proper order from a left side, the inside of casing is from a left side to having and installs first installation pipe and second installation pipe in proper order, and the inside of first installation pipe and second installation pipe is provided with the static friction piece, the mid-mounting of casing has the baffle, first installation pipe and baffle middle part all install the main shaft through mechanical bearing seal, and install first reset spring between first installation pipe and the baffle, install the second reset spring between second installation pipe and the second end cover, first inlet port, first cooling oil filling hole, first cooling oil outlet and second inlet port have been seted up in proper order from a right side to a left side in the outside of casing, second cooling oil filling hole and second cooling oil outlet have been seted up in surface symmetry of first end cover. When braking is needed, hydraulic oil is injected into the shell 1 through the first oil inlet hole and the second oil inlet hole, so that the first installation pipe and the second installation pipe slide due to oil pressure change, the first installation pipe and the second installation pipe move towards the left side, the first installation pipe and the second installation pipe are enabled to move with the dynamic and static friction plates, the static friction plates are in contact with the dynamic friction plates, braking is completed, the structure belongs to a normally closed wet brake, but the axial length of the structure is large and the structure is not suitable for a mine transport vehicle with a small wheel distance, in addition, the static friction plates are installed in the first installation pipe and the second installation pipe, the outer surfaces of the first installation pipe and the second installation pipe are connected with the shell through keys, stress can be concentrated on weak positions of the first installation pipe and the second installation pipe, and the first installation pipe and the second installation pipe need to bear large torque, and therefore the first installation pipe and the second installation pipe are easy to deform during traveling, and great potential safety hazards exist.
Disclosure of Invention
The utility model aims at providing a when parking spring damages, perhaps when braking component damages, be difficult for leading to the parking function to lose, can ensure driving safety, big moment of torsion braking have vice wet brake of two frictions.
In order to achieve the purpose, the wet brake with double friction pairs comprises a plurality of dynamic friction plates, a plurality of static friction plates, a plurality of brake springs, a plurality of return springs, a left brake cylinder cover, a right brake cylinder cover, a brake piston, a brake shell and a brake cylinder body, wherein a tooth-shaped spline is arranged in an inner hole of the brake shell, a tooth-shaped spline is also arranged on the excircle of the static friction plate, the static friction plates are arranged on the tooth-shaped spline in the brake shell to form a whole, one end of the brake piston is contacted with the dynamic friction plates or the static friction plates, the return springs are uniformly distributed in the brake shell, the brake piston is respectively contacted with the left brake cylinder cover and the right brake cylinder cover through the brake springs, a brake shell I and a brake shell II are respectively arranged on two sides of the brake cylinder body, a friction pair I consisting of the plurality of the dynamic friction plates and the plurality of the static friction plates is arranged in the brake shell I, A friction pair II consisting of a plurality of dynamic friction plates and a plurality of static friction plates is arranged in a brake shell II, one side of the friction pair I is in contact with one end face of an emergency brake piston, the other side of the friction pair I is in contact with one end face of a service brake piston I, one side of the friction pair II is in contact with one end face of a parking brake piston, the other side of the friction pair II is in contact with one end face of the service brake piston II, the other end face of the parking brake piston is in contact with a right brake cylinder cover through a plurality of brake springs, the other end face of the emergency brake piston is in contact with a left brake cylinder cover through a plurality of brake springs, one end face of the service brake piston I and one end face of the service brake piston II are in contact with the brake shell I and the brake shell II respectively through return springs, and the service brake piston I and the service brake piston II are arranged in a brake cylinder body respectively.
And the service brake piston I and the service brake piston II are arranged in a separated mode.
The service brake piston I is arranged to be T-shaped in axial section, so that the small end of the service brake piston I is conveniently sleeved in the brake cylinder body.
The service brake piston II is arranged to be T-shaped in axial section, so that the small end of the service brake piston II is conveniently sleeved in the brake cylinder body.
The brake cylinder body is provided with annular grooves which can be respectively matched with the small ends of the service brake piston I and the service brake piston II, and is also provided with an oil inlet and an oil outlet which can be respectively communicated with the service brake piston I and the service brake piston II.
The two annular grooves are on the same axis.
The emergency brake piston is arranged in a brake housing I.
The parking brake piston is disposed within a brake housing ii.
An oil inlet and an oil outlet are formed in the brake shell I.
An oil inlet and an oil outlet are formed in the brake shell II.
After the structure is adopted, the two sides of the brake cylinder body are respectively provided with a brake shell I and a brake shell II, a friction pair I consisting of a plurality of dynamic friction plates and a plurality of static friction plates is arranged in the brake shell I, a friction pair II consisting of a plurality of dynamic friction plates and a plurality of static friction plates is arranged in the brake shell II, one side of the friction pair I is in contact with one end face of an emergency brake piston, the other side of the friction pair I is in contact with one end face of a service brake piston I, one side of the friction pair II is in contact with one end face of a parking brake piston, the other side of the friction pair II is in contact with one end face of the service brake piston II, the other end face of the parking brake piston is in contact with a right brake cylinder cover through a plurality of brake springs, the other end face of the emergency brake piston is in contact with a left brake cylinder cover through a plurality of brake springs, one end face of the service brake piston I and one end face of the service brake piston II are also in contact with the brake shell I and the brake shell II through return springs, and the service brake piston I and the service brake piston II are respectively arranged in the brake cylinder body. When the parking spring is damaged or the common friction pair II is damaged, the emergency braking piston acts to compress the friction pair I, so that the aim of eliminating potential safety hazards is fulfilled.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is a schematic main sectional view of a wet brake with double friction pairs according to the present invention.
In the figure: 1. the brake device comprises a brake spring 2, an emergency brake piston 3, a friction pair I4, a return spring 5, a service brake piston I6, a service brake piston II 7, a friction pair II 8, a parking brake piston 9, a right brake cylinder cover 10, a brake shell II 11, an annular groove 12, a brake cylinder body 13, a brake shell I14 and a left brake cylinder cover.
Detailed Description
The wet brake with double friction pairs of the utility model shown in the attached figure 1 comprises a plurality of dynamic friction plates, a plurality of static friction plates, a plurality of brake springs 1, a plurality of return springs 4, a left brake cylinder cover 14, a right brake cylinder cover 9, a brake piston, a brake shell and a brake cylinder body 12, a tooth-shaped spline is arranged in the inner hole of the brake shell, a tooth-shaped spline is also arranged on the excircle of the static friction plate, the static friction plate is arranged on the tooth-shaped spline in the brake shell to form a whole, one end of the brake piston is contacted with the brake friction plate or the static friction plate, a plurality of return springs 4 are uniformly distributed in the brake shell, the brake piston is respectively contacted with a left brake cylinder cover 14 and a right brake cylinder cover 9 through a plurality of brake springs 1, a brake shell I13 and a brake shell II 10 are respectively arranged on two sides of the brake cylinder body 12, a friction pair I3 consisting of a plurality of dynamic friction plates and a plurality of static friction plates is arranged in the brake shell I13, a friction pair II 7 consisting of a plurality of dynamic friction plates and a plurality of static friction plates is arranged in a brake shell II 10, one side of the friction pair I3 is in contact with one end face of an emergency brake piston 2, the other side of the friction pair I3 is in contact with one end face of a service brake piston I5, one side of the friction pair II 7 is in contact with one end face of a parking brake piston 8, the other side of the friction pair II 7 is in contact with one end face of a service brake piston II 6, the other end face of the parking brake piston 8 is in contact with a right brake cylinder cover 9 through a plurality of brake springs 1, the other end face of the emergency brake piston 2 is in contact with a left brake cylinder cover 14 through a plurality of brake springs 1, one end face of the service brake piston I5 and one end face of the service brake piston II 6 are also in contact with a brake shell I13 and a brake shell II 10 through a return spring 4 respectively, and the service brake piston I5 and the service brake piston II 6 are arranged in a brake cylinder body 12 respectively; the service brake piston I5 and the service brake piston II 6 are arranged in a separated mode; the service brake piston I5 is arranged to have a T-shaped axial section, so that the small end of the service brake piston I5 is conveniently sleeved in the brake cylinder body 12; the service brake piston II 6 is arranged in a T-shaped axial section, so that the small end of the service brake piston II 6 is conveniently sleeved in the brake cylinder body 12; annular grooves 11 which can be respectively matched with small ends of the service brake piston I5 and the service brake piston II 6 are formed in two end faces of the brake cylinder body 12, and a hydraulic oil inlet and outlet port is further formed in the brake cylinder body 12 of a cavity between the bottom face of the annular groove 11 of the brake cylinder body 12 and the small end faces of the service brake piston I5 and the service brake piston II 6; the two annular grooves 11 are on the same axis; the emergency brake piston 2 is arranged in a brake housing I13; the parking brake piston 8 is arranged in a brake housing II 10; an oil inlet and an oil outlet are formed in the brake housing I13; an oil inlet and an oil outlet are formed in the brake shell II 10.
When the parking brake device is used, an engine of a vehicle is started firstly, the emergency brake piston 2 and the parking brake piston 8 are started simultaneously, so that the vehicle is in the process of moving, when the vehicle needs to be stopped, a brake pedal is stepped down, hydraulic oil on the parking brake piston 8 is disconnected, and the parking brake piston 8 is pressed against a dynamic friction plate or a static friction plate on the friction pair II 7 under the action of the brake spring 1 to achieve the purpose of braking; when the friction pair II 7 or the brake spring 1 fails, hydraulic oil on the emergency brake piston 2 can be disconnected, and the emergency brake piston 2 is pressed against a dynamic friction plate or a static friction plate on the friction pair I3 under the action of the brake spring 1 to achieve the purpose of braking; when large-torque braking is needed, a brake pedal connected with the service brake piston I5 and the service brake piston II 6 can be simultaneously stepped on, hydraulic oil is injected into a cavity between the bottom surface of the annular groove 11 and the small end surfaces of the service brake piston I5 and the service brake piston II 6, the service brake piston I5 and the service brake piston II 6 respectively move leftwards and rightwards, and dynamic friction plates or static friction plates on the friction pair I3 and the friction pair II 7 are respectively pressed to achieve the purpose of braking.
Claims (10)
1. The utility model provides a wet brake with double friction is vice, by a plurality of dynamic friction pieces, a plurality of static friction pieces, a plurality of brake spring, a plurality of return spring, left side braking cylinder cap, right side braking cylinder cap, the braking piston, braking casing and braking cylinder body are constituteed, be provided with the tooth-shaped spline at the internal hole of braking casing, also be provided with the tooth-shaped spline on the excircle of static friction piece, adorn static friction piece on the tooth-shaped spline in the braking casing, make it constitute an organic whole, the one end of braking piston contacts with dynamic friction piece or static friction piece, a plurality of return spring equipartitions are in the braking casing, the braking piston contacts with left braking cylinder cap, right side braking cylinder cap respectively through a plurality of brake spring, its characterized in that: the brake device is characterized in that a brake shell I (13) and a brake shell II (10) are respectively arranged on two sides of a brake cylinder body (12), a friction pair I (3) consisting of a plurality of dynamic friction plates and a plurality of static friction plates is arranged in the brake shell I (13), a friction pair II (7) consisting of a plurality of dynamic friction plates and a plurality of static friction plates is arranged in the brake shell II (10), one side of the friction pair I (3) is in surface contact with one end face of an emergency brake piston (2), the other side of the friction pair I (3) is in surface contact with one end face of the service brake piston I (5), one side of the friction pair II (7) is in surface contact with one end face of the parking brake piston (8), the other side of the friction pair II (7) is in surface contact with one end face of the service brake piston II (6), the other end face of the parking brake piston (8) is in surface contact with a right brake cylinder cover (9) through a plurality of brake springs (1), the other end face of the emergency brake piston (2) is in surface contact with a left brake cylinder cover (14) through a plurality of the service springs (1), one end face of the service brake piston I (5) and the service brake piston II (6) are respectively in contact with a return brake shell I (13) and a return piston (10).
2. The wet brake with dual friction pairs as recited in claim 1, wherein: and the service brake piston I (5) and the service brake piston II (6) are arranged in a separated mode.
3. The wet brake with dual friction pairs as recited in claim 1, wherein: the service brake piston I (5) is arranged to be T-shaped in axial section, so that the small end of the service brake piston I (5) is conveniently sleeved in the brake cylinder body (12).
4. The wet brake with dual friction pairs as recited in claim 1, wherein: the service brake piston II (6) is arranged to be T-shaped in axial section, so that the small end of the service brake piston II (6) is conveniently sleeved in the brake cylinder body (12).
5. The wet brake with dual friction pairs as claimed in claim 1, wherein: the brake cylinder body (12) is provided with annular grooves (11) which can be respectively matched with the small ends of the service brake piston I (5) and the service brake piston II (6) on the two end faces, and a hydraulic oil inlet and outlet port is further formed in the brake cylinder body (12) of the cavity between the bottom face of the annular groove (11) of the brake cylinder body (12) and the small end faces of the service brake piston I (5) and the service brake piston II (6).
6. The wet brake with dual friction pairs as claimed in claim 5, wherein: the two annular grooves (11) are on the same axis.
7. The wet brake with dual friction pairs as recited in claim 1, wherein: the emergency brake piston (2) is arranged in a brake housing I (13).
8. The wet brake with dual friction pairs as claimed in claim 1, wherein: the parking brake piston (8) is arranged in a brake housing II (10).
9. The wet brake with dual friction pairs according to claim 1 or 7, characterized in that: an oil inlet and an oil outlet are formed in the brake housing I (13).
10. The wet brake with dual friction pairs according to claim 1 or 8, characterized in that: an oil inlet and an oil outlet are formed in the brake shell II (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220625519.9U CN217633558U (en) | 2022-03-22 | 2022-03-22 | Wet brake with double friction pairs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220625519.9U CN217633558U (en) | 2022-03-22 | 2022-03-22 | Wet brake with double friction pairs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217633558U true CN217633558U (en) | 2022-10-21 |
Family
ID=83644630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220625519.9U Active CN217633558U (en) | 2022-03-22 | 2022-03-22 | Wet brake with double friction pairs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217633558U (en) |
-
2022
- 2022-03-22 CN CN202220625519.9U patent/CN217633558U/en active Active
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