Wet brake
By designing wet brakes, using three-piece friction plates and brake pad II, combined with a single brake piston propulsion structure, the problems of unstable efficiency and short service life of existing automobile brakes are solved, and a large braking torque and extension are achieved. service life.
Patent Information
- Application Number
- CN202421108151.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-20
AI Technical Summary
Existing automotive brakes such as drum and clamp disc brakes have problems such as unstable efficiency, fast wear and short service life, especially due to complex structure and sensitive braking torque and friction plate wear caused by sensitive temperature changes. Uneven.
A wet brake is designed, using three-piece friction plates and three-piece brake plates II, combined with a single brake piston propulsion structure, which reduces the number of parts and simplifies manufacturing and installation, and achieves smaller component bearing capacity and extends service life. And sealing is achieved through the retaining ring and astring ring, and the magnetic screw plug prevents oil leakage.
Achieve a larger braking torque under a smaller lining pressure, reduces the component's pressure and extends the service life. The gap between the friction plate and the brake plate is small, so the transmission torque is suitable for heavy load and long slope brakes. In addition, the braking stability and service life are improved.
Smart Images
Figure CN222163324U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of brakes, in particular to a wet brake. Background Art
[0002] At present, there are two main types of brakes for automobiles in my country: drum brakes and caliper disc brakes. Drum brakes are mainly made of brake drums, brake shoes, wheel axles, etc. Due to structural defects, the efficiency is unstable and it is particularly sensitive to the material, temperature and surface condition of the friction plate, as well as the changes in the contact between the shoe and the drum. This brings a series of disadvantages, such as excessive increase in braking torque, poor braking feeling, uneven force on the brake drum and wheel hub, and uneven wear of the friction plate. Caliper disc brakes use a brake disc and multiple small hydraulic cylinders. Hardware contact is prone to wear, heat, and oil leakage in the cylinder, which reduces the service life. Utility Model Content
[0003] The utility model aims to provide a wet brake, which has the advantages of small number of parts, simple manufacturing and installation, small bearing force of components and prolonged service life.
[0004] To achieve the above-mentioned purpose, the wet brake of the utility model comprises an oil inlet hole, an oil outlet hole, a support shaft, and a brake housing. The support shaft and the brake housing form a closed space. A spline sleeve is installed at the center of the brake housing. The outside of the spline sleeve (18) is connected with a support sleeve II, a piston, a brake pad II, a friction pad, a brake pad I, and a support sleeve I in sequence from bottom to top. The friction pad is embedded in the spline sleeve. The brake pad II and the friction pad are installed side by side in sequence with a gap. The number of the friction pad and the brake pad II is three.
[0005] As a further solution of the utility model: the total clearance between the friction pad and brake pad II and brake pad I is ensured by moving the large spread surface of the piston to ensure CAB = 2.3 ~ 2.7mm; wherein the dimension from the upper surface of the brake pad I to the lower surface of the support shaft where the O-ring is located is A, the width dimension of the combination of the friction pad and brake pad II, brake pad I is B, and the dimension from the piston spread surface to the brake housing spread surface is C.
[0006] As a further solution of the utility model: a brake pad I is provided on the uppermost friction pad, and the length of the brake pad I is smaller than the length of the friction pad.
[0007] As a further solution of the utility model: the piston is connected with a spring, and the spring is fixed in the brake housing by bolts.
[0008] As a further solution of the utility model: a bleed nozzle is inserted into the side edge of the brake housing, and the bleed nozzle is fixedly connected to the brake through a screw plug seat;
[0009] As a further solution of the utility model: a retaining ring I, a star ring I, a star ring II, and a retaining ring II are used inside the wet brake to realize inner and outer radial sealing.
[0010] As a further solution of the utility model: a magnetic screw plug is provided at the oil outlet, and an O-type sealing ring is provided around the magnetic screw plug.
[0011] Compared with the prior art, the wet brake of the utility model adopts three friction plates and three brake plates II, and one brake plate I for braking, which reduces the number of parts, is simple to manufacture and install, can obtain a larger braking torque under a smaller lining pressure, and reduces the pressure on the components, so that the unit specific pressure of the friction plate is smaller, and the service life is delayed. At the same time, the gap between the friction plate and the brake plate is set to be smaller, and a single brake piston propulsion structure is adopted, so that the friction parts are evenly stressed, and the gap between the friction plate and the brake plate I does not need to be adjusted and is allowed to slip, and the transmitted torque is suitable for heavy-load long slope braking conditions. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a main cross-sectional schematic diagram of the wet brake of the utility model.
[0013] Figure 2 It is a structural schematic diagram of a wet brake of a utility model.
[0014] In the figure: 1, supporting shaft, 2, supporting sleeve I, 3, brake pad I, 4, O-ring, 5, brake housing, 6, magnetic plug screw, 7, O-ring, 8, brake pad II, 9, friction plate, 10, retaining ring I, 11, star ring I, 12, star ring II, 13, retaining ring II, 14, piston, 15, bolt, 16, spring, 17, supporting sleeve II, 18, spline sleeve, 19, plug screw seat, 20, bleed nozzle. DETAILED DESCRIPTION
[0015] The utility model will be further described below in conjunction with the accompanying drawings.
[0016] like Figure 1 As shown, the wet brake includes an oil inlet, an oil outlet, a support shaft 1, and a brake housing 5. The support shaft 1 and the brake housing 5 form a closed space. A spline sleeve 18 is installed at the center of the brake housing 5. The outside of the spline sleeve 18 is connected with a support sleeve II17, a piston 14, a brake pad II8, a friction pad 9, a brake pad I3, and a support sleeve I2 in sequence from bottom to top. The friction pad 9 is embedded in the spline sleeve 18. The brake pad II8 and the friction pad 9 are installed side by side in sequence with an interval. The number of friction pads 9 and brake pads II8 are both three.
[0017] In order to further enhance the braking effect, a brake pad I3 is also provided on the uppermost friction pad 9, and the length of the brake pad I3 is less than that of the friction pad 9; a smaller number of friction pads and brake pads II can still achieve an ideal braking effect, reducing the number of parts and components and reducing production costs; a spring 16 is connected to the piston 14, and the spring 16 is fixed in the brake housing by a bolt 15; a bleed nozzle 20 is inserted into the side edge of the brake housing, and the bleed nozzle 20 is fixedly connected to the brake through a screw plug seat 19; a retaining ring I10, a star ring I11, a star ring II12, and a retaining ring II13 are used inside the wet brake to achieve inner and outer radial sealing; the magnetic plug screw 6 is located at the oil outlet, and an O-ring 7 is provided around the magnetic plug screw 6 for sealing to prevent oil leakage.
[0018] like Figure 1 As shown, in order to ensure the braking effect, during assembly, the total clearance between the friction pad 9 and the brake pad II8 and the brake pad I3 is ensured to be CAB = 2.3 ~ 2.7mm by moving the piston 14 to a larger surface; wherein the dimension from the upper surface of the brake pad I3 to the lower surface of the support shaft where the O-ring 4 is located is A, the width dimension of the combination of the friction pad 9 and the brake pad II8 and the brake pad I3 is B, and the dimension from the piston 14 surface to the brake housing surface is C.
[0019] The brake adopts a single brake piston propulsion structure, the friction parts are evenly stressed, the gap between the friction plate and the brake plate I does not need to be adjusted and slippage is allowed, and the transmitted torque is suitable for heavy-load long slope braking conditions.
[0020] The wet brake adopts a fully enclosed structure with a large annular working surface, which can effectively prevent the infiltration of mud, water and oil, and the braking is stable. The brake uses a smaller number of friction plates and brake pads inside, which can obtain a larger braking torque under a smaller lining pressure, while reducing the pressure on the components, making the friction plate unit specific pressure smaller. The brake is hydraulically driven, and the oil circulates to dissipate heat and cool, which has good heat dissipation performance, reduces maintenance, and extends the service life. The fixed disc and the brake housing are connected by a flower chain, and the friction disc is installed between the fixed discs and brakes with the wheel hub. The braking performance is safer and more reliable, the service life is longer, and almost no maintenance is required.
Claims
1. A wet brake, comprising an oil inlet, an oil outlet, a support shaft (1), and a brake housing (5), wherein the support shaft (1) and the brake housing (5) form a closed space, a spline sleeve (18) is provided at the center of the brake housing (5), and the outside of the spline sleeve (18) is connected with a support sleeve II (17), a piston (14), a brake pad II (8), a friction pad (9), a brake pad I (3), and a support sleeve I (2) in sequence from bottom to top, the friction pad (9) is embedded in the spline sleeve (18), and the brake pad II (8) and the friction pad (9) are installed in sequence side by side with an interval, characterized in that: The number of the friction plate (9) and brake plate II (8) is three.
2. The wet brake according to claim 1, characterized in that: The total clearance between the friction plate (9) and the brake plate II (8) and the brake plate I (3) is ensured to be CAB=2.3-2.7 mm by moving the piston (14) to a larger extent; wherein the dimension from the upper surface of the brake plate I (3) to the lower surface of the support shaft where the O-ring (4) is located is A, the width dimension of the combination of the friction plate (9) and the brake plate II (8) and the brake plate I (3) is B, and the dimension from the piston (14) to the brake housing is C.
3. The wet brake according to claim 1, characterized in that: A brake pad 1 (3) is arranged on the uppermost friction pad (9), and the length of the brake pad 1 (3) is smaller than the length of the friction pad (9).
4. The wet brake according to claim 1 or 2, characterized in that: The piston (14) is connected to a spring (16), and the spring (16) is fixed in the brake housing via a bolt (15).
5. The wet brake according to claim 1 or 2, characterized in that: A bleed nozzle (20) is inserted through the side edge of the brake housing, and the bleed nozzle (20) is fixedly connected to the wet brake via a screw plug seat (19).
6. The wet brake according to claim 1, characterized in that: The wet brake uses a retaining ring I (10), a star ring I (11), a star ring II (12), and a retaining ring II (13) to achieve inner and outer radial sealing.
7. The wet brake according to claim 1, characterized in that: A magnetic screw plug (6) is provided at the oil outlet, and an O-type sealing ring (7) is provided around the magnetic screw plug (6).