Brake performance adjustable hydraulic retarder

Abstract

The utility model discloses a kind of braking efficiency adjustable hydraulic retarder, belong to hydraulic retarder field.The device includes: connecting shaft, two groups of brake parts, driving part and box body.Connected shaft is equipped with stator casing and rotor casing respectively;Stator casing and rotor casing are set to open side adhesion, and oil cavity is formed between stator casing and rotor casing.Two groups of brake parts are respectively arranged in stator casing and rotor casing;Brake part includes fixedly connected with the butt joint ring of stator casing / rotor casing inner wall;Multiple groups of vane are equipped outside butt joint ring.The utility model is rotated by starting motor connected bevel gear, to drive bevel gear ring and multiple bevel gears rotate in common, to adjust multiple groups of vane angle of attack.High speed reduces angle of attack, reduces oil liquid stirring resistance and energy loss;Low speed increases angle of attack, strengthens oil liquid blocking effect, improves eddy current intensity and damping moment, solves the pain point of traditional hydraulic retarder low-speed braking force deficiency.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic retarders, and in particular to a hydraulic retarder with adjustable braking performance. Background Technology

[0002] A hydraulic retarder is an auxiliary braking device based on the principles of fluid dynamics. It generates damping torque through the flow of liquid between rotating components, converting the vehicle's kinetic energy into liquid heat energy to achieve vehicle deceleration or speed control. Its core function is to replace or assist the service brake, avoiding brake fade caused by prolonged braking, and improving the driving safety of heavy vehicles and commercial vehicles. It is especially suitable for harsh conditions such as long downhill slopes and heavy loads.

[0003] Traditional hydraulic retarders have fixed rotor blades with a constant angle of attack. This angle of attack parameter can only be matched to a single operating condition and cannot take into account both high-speed and low-speed braking performance. At high speeds, a fixed large angle of attack will increase the resistance of oil churning, resulting in additional energy loss and increased vehicle fuel consumption; at low speeds, a fixed small angle of attack cannot enhance the oil blocking effect, and the eddy current intensity is insufficient.

[0004] Therefore, this utility model proposes a hydraulic retarder with adjustable braking performance. Utility Model Content

[0005] This invention provides a hydraulic retarder with adjustable braking performance, which can solve the problem that the rotor blades of the traditional hydraulic retarder in the prior art are fixed and the angle of attack is constant. Its angle of attack parameter can only match a single working condition and cannot take into account both high and low speed braking performance.

[0006] A hydraulic retarder with adjustable braking performance, comprising: The system comprises a connecting shaft, two sets of braking components, a drive unit, and a housing. The connecting shaft houses a stator housing and a rotor housing; the open sides of the stator and rotor housings are fitted together, forming an oil cavity between them. The two sets of braking components are respectively housed within the stator and rotor housings; each braking component includes a mating ring fixedly connected to the inner wall of the stator / rotor housing; multiple sets of blades are provided on the outer side of the mating ring. The drive unit is located within the rotor housing and is used to drive the multiple sets of blades within the rotor housing to deflect relative to the mating ring. The housing is located on the side wall of the rotor housing and is used to introduce oil into the oil cavity.

[0007] Preferably, the rotor housing and the connecting shaft are fixedly connected, and the stator housing and the connecting shaft are sleeved together.

[0008] Preferably, multiple sets of blades within the stator housing and rotor housing are arranged in a ring array around the corresponding docking ring.

[0009] Preferably, multiple sets of blades in the stator housing are fixedly connected to the corresponding mating rings, and multiple sets of blades in the rotor housing are rotatably connected to the corresponding mating rings via a rotating shaft.

[0010] Preferably, all sets of blades are arranged in an arc-shaped bend.

[0011] Preferably, multiple fins are evenly distributed on each of the multiple sets of blades.

[0012] Preferably, multiple fins are arranged along the tangential direction when multiple sets of blades rotate.

[0013] Preferably, the drive component includes multiple bevel gears coaxially connected to the rotating shafts on multiple sets of blades inside the rotor housing; a bevel gear ring is rotatably provided on the inner side of the mating ring; the bevel gear ring meshes with the multiple bevel gears; a motor is also provided on the inner side of the mating ring; the drive end of the motor is connected to the end of one of the rotating shafts.

[0014] Preferably, an oil inlet is provided on the side of the housing away from the rotor housing; and multiple oil passages communicating with the inside of the oil chamber are evenly provided on the side of the housing near the rotor housing.

[0015] Preferably, a driven wheel is coaxially provided on the connecting shaft; a driving wheel is meshed with one side of the driven wheel; the diameter of the driving wheel is larger than the diameter of the driven wheel.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: This hydraulic retarder with adjustable braking performance includes two sets of braking components and a drive component. The two sets of braking components are respectively housed within the stator housing and the rotor housing; each braking component includes a mating ring fixedly connected to the inner wall of the stator / rotor housing; multiple sets of blades are provided on the outer side of the mating ring. The drive component is located within the rotor housing and is used to drive the multiple sets of blades within the rotor housing to deflect relative to the mating ring. A starting motor drives the connected bevel gears to rotate, thereby driving the bevel gear ring and multiple bevel gears to rotate together, thus adjusting the angle of attack of the multiple sets of blades. At high speeds, the angle of attack is reduced to decrease oil stirring resistance and energy loss; at low speeds, the angle of attack is increased to enhance the oil blocking effect, improve eddy current intensity and damping torque, solving the problem of insufficient low-speed braking force in traditional hydraulic retarder. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the hydraulic retarder with adjustable braking performance according to this utility model. Figure 2 This is a schematic diagram of the braking and driving components of this utility model; Figure 3 This is a schematic diagram of the internal structure of the rotor housing of this utility model; Figure 4 This is a schematic diagram of the box structure of this utility model.

[0018] Explanation of reference numerals in the attached figures: 1. Connecting shaft; 2. Driven wheel; 3. Driving wheel; 4. Stator housing; 5. Rotor housing; 6. Braking components; 61. Connecting ring; 62. Blade; 63. Fin; 7. Driving components; 71. Bevel gear; 72. Bevel gear ring; 73. Motor; 8. Housing; 81. Oil inlet; 82. Oil outlet. Detailed Implementation

[0019] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0020] like Figure 1-4 As shown in the figure, an embodiment of the present invention provides a hydraulic retarder with adjustable braking performance, comprising a connecting shaft 1, two sets of braking components 6, a driving component 7, and a housing 8. A stator housing 4 and a rotor housing 5 are respectively mounted on the connecting shaft 1; the open sides of the stator housing 4 and the rotor housing 5 are fitted together, and an oil cavity is formed between the stator housing 4 and the rotor housing 5. The two sets of braking components 6 are respectively disposed within the stator housing 4 and the rotor housing 5; each braking component 6 includes a mating ring 61 fixedly connected to the inner wall of the stator housing 4 / rotor housing 5; a sealed cavity is formed between the stator housing 4, the rotor housing 5, and the two sets of mating rings 61 to prevent oil intrusion. Multiple sets of blades 62 are provided on the outer side of the mating rings 61. The driving component 7 is disposed within the sealed cavity and is used to drive the multiple sets of blades 62 within the rotor housing 5 to deflect relative to the mating rings 61. The housing 8 is disposed on the side wall of the rotor housing 5 and is used to introduce oil into the oil cavity.

[0021] To further explain, the rotor housing 5 is fixedly connected to the connecting shaft 1, and the stator housing 4 is sleeved onto the connecting shaft 1. The stator housing 4 is fixedly mounted on the gearbox housing or vehicle frame. Multiple sets of blades 62 within the stator housing 4 and rotor housing 5 are arranged in a ring array around corresponding docking rings 61, which can uniformly agitate the oil and improve eddy current resistance stability. The multiple sets of blades 62 within the stator housing 4 are fixedly connected to the corresponding docking rings 61, while the multiple sets of blades 62 within the rotor housing 5 are rotatably connected to the corresponding docking rings 61 via a rotating shaft.

[0022] To further explain, all sets of blades 62 are arranged in an arc-shaped bend. On the one hand, this can enhance the impact and eddy current effect between the oil and the blades 62, thereby improving braking torque and deceleration efficiency; on the other hand, it can optimize the oil flow path, reduce turbulence loss, make the force more uniform, and reduce local wear.

[0023] To further explain, multiple fins 63 are evenly distributed on each of the multiple sets of blades 62. These fins 63 are arranged tangentially to the direction of oil flow as the multiple sets of blades 62 rotate. This reduces oil slippage along the tank wall at low speeds, enhances eddy current disturbance, and increases damping torque.

[0024] Further explanation: The drive component 7 includes multiple bevel gears 71 coaxially connected to the shafts of multiple sets of blades 62 within the rotor housing 5; a bevel gear ring 72 is rotatably mounted on the inner side of the mating ring 61; the bevel gear ring 72 meshes with the multiple bevel gears 71; a motor 73 is also mounted on the inner side of the mating ring 61; the drive end of the motor 73 is connected to the end of one of the shafts. The drive component 7 can drive the multiple sets of blades 62 within the rotor housing 5 to deflect relative to the mating ring 61. The angle of attack of the multiple sets of blades 62 can be dynamically adjusted according to the vehicle speed. At high speeds, the angle of attack is reduced to decrease oil stirring resistance and energy loss; at low speeds, the angle of attack is increased to enhance the oil blocking effect, improve eddy current intensity and damping torque, and solve the problem of insufficient low-speed braking force in traditional hydraulic retarders.

[0025] To further explain, an oil inlet 81 is provided on the side of the housing 8 away from the rotor housing 5; multiple oil passages 82, which communicate with the inside of the oil chamber, are evenly provided on the side of the housing 8 near the rotor housing 5, and the oil inlet 81 is connected to the oil tank. Oil can be evenly introduced into the oil chamber through the multiple oil passages 82.

[0026] To further explain, a driven wheel 2 is coaxially mounted on the connecting shaft 1; a driving wheel 3 is meshed with one side of the driven wheel 2; the diameter of the driving wheel 3 is larger than the diameter of the driven wheel 2. The main shaft of the driving wheel 3 is connected to the vehicle's transmission system, such as the output shaft of a gearbox.

[0027] The working principle of this utility model is as follows: During operation, the vehicle transmission system first drives the drive wheel 3 to rotate, thereby driving the driven wheel 2, connecting shaft 1, rotor housing 5, docking ring 61, and multiple sets of blades 62 to rotate. Simultaneously, oil is introduced into the housing 8 through the oil inlet 81, and then the oil is introduced into the oil chamber through multiple oil inlets 82. The rotation of the multiple sets of blades 62 inside the rotor housing 5 causes the oil to be thrown towards the stator housing 4. The reaction force of the multiple sets of blades 62 inside the stator housing 4 creates eddy current resistance in the oil, generating a reverse torque that acts on the drive shaft, thereby reducing the vehicle speed.

[0028] The angle of attack of multiple sets of blades 62 can also be dynamically adjusted according to the vehicle speed. That is, the starting motor 73 drives the connected bevel gear 71 to rotate, which in turn drives the bevel gear ring 72 and multiple bevel gears 71 to rotate together, thereby adjusting the angle of attack of multiple sets of blades 62. At high speeds, the angle of attack is reduced to reduce oil stirring resistance and energy loss; at low speeds, the angle of attack is increased to enhance the oil blocking effect, improve eddy current intensity and damping torque, and solve the problem of insufficient braking force at low speeds in traditional hydraulic retarders.

[0029] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A hydraulic retarder with adjustable braking performance, characterized in that, include: Connecting shaft (1); stator housing (4) and rotor housing (5) are respectively provided on the connecting shaft (1); the open sides of stator housing (4) and rotor housing (5) are fitted together, and an oil cavity is formed between stator housing (4) and rotor housing (5); Two sets of braking components (6); the two sets of braking components (6) are respectively installed in the stator housing (4) and the rotor housing (5); the braking component (6) includes a docking ring (61) fixedly connected to the inner wall of the stator housing (4) / rotor housing (5); multiple sets of blades (62) are provided on the outer side of the docking ring (61); Drive unit (7); The drive unit (7) is disposed inside the rotor housing (5) and is used to drive multiple sets of blades (62) inside the rotor housing (5) to deflect relative to the docking ring (61); Box (8); Box (8) is located on the side wall of rotor housing (5) and is used to introduce oil into the oil chamber.

2. The hydraulic retarder with adjustable braking performance according to claim 1, characterized in that, The rotor housing (5) and the connecting shaft (1) are fixedly connected, and the stator housing (4) and the connecting shaft (1) are sleeved together.

3. A hydraulic retarder with adjustable braking performance according to claim 2, characterized in that, Multiple sets of blades (62) inside the stator housing (4) and rotor housing (5) are arranged in a ring array around the corresponding docking ring (61).

4. A hydraulic retarder with adjustable braking performance according to claim 3, characterized in that, Multiple sets of blades (62) in the stator housing (4) are fixedly connected to the corresponding docking ring (61), and multiple sets of blades (62) in the rotor housing (5) are rotatably connected to the corresponding docking ring (61) through a rotating shaft.

5. A hydraulic retarder with adjustable braking performance according to claim 4, characterized in that, Multiple sets of blades (62) are arranged in an arc-shaped bend.

6. A hydraulic retarder with adjustable braking performance according to claim 5, characterized in that, Multiple fins (63) are evenly distributed on multiple sets of blades (62).

7. A hydraulic retarder with adjustable braking performance according to claim 6, characterized in that, Multiple fins (63) are arranged along the tangential direction when multiple sets of blades (62) rotate.

8. A hydraulic retarder with adjustable braking performance according to claim 7, characterized in that, The drive unit (7) includes multiple bevel gears (71) that are coaxially connected to the shafts of multiple sets of blades (62) inside the rotor housing (5); a bevel gear ring (72) is rotatably provided inside the docking ring (61); the bevel gear ring (72) meshes with the multiple bevel gears (71); a motor (73) is also provided inside the docking ring (61); the drive end of the motor (73) is connected to the end of one of the shafts.

9. A hydraulic retarder with adjustable braking performance according to claim 1, characterized in that, An oil inlet (81) is provided on the side of the housing (8) away from the rotor housing (5); multiple oil passages (82) that communicate with the inside of the oil chamber are evenly provided on the side of the housing (8) close to the rotor housing (5).

10. A hydraulic retarder with adjustable braking performance according to claim 1, characterized in that, A driven wheel (2) is coaxially mounted on the connecting shaft (1); a driving wheel (3) is meshed with one side of the driven wheel (2); the diameter of the driving wheel (3) is larger than the diameter of the driven wheel (2).

Images