CN-121989894-A - Electric control push rod mechanism for commercial vehicle brake

Abstract

The invention relates to an electric control push rod mechanism for a commercial vehicle brake, which comprises a service brake module, a parking brake module and a ball screw pair, wherein the service brake module and the parking brake module are axially arranged and respectively connected with the ball screw pair, and the service brake module and the parking brake module respectively provide braking thrust by the ball screw pair.

Inventors

• YANG ZHIGANG
• ZHANG WENBO
• SHEN LING
• YUAN WENQIANG
• MA YAYA

Assignees

• 陕西重型汽车有限公司

Dates

Publication Date

20260508

Application Date

20241105

Claims (9)

1. 1. The electric control push rod mechanism for the commercial vehicle brake is characterized by comprising a service brake module (1), a parking brake module (2) and a ball screw pair (3), wherein the service brake module (1) and the parking brake module (2) are axially arranged and are respectively connected with the ball screw pair (3), and the service brake module (1) and the parking brake module (2) are respectively provided with braking thrust by the ball screw pair (3).
2. 2. The electric push rod mechanism for a commercial vehicle brake according to claim 1, characterized in that the service brake module (1) comprises an electric motor (11) and a first electromagnetic clutch (12), wherein the rotor of the electric motor (11) and the rotor of the first electromagnetic clutch (12) are respectively connected with a nut of the ball screw pair (3), the nut of the ball screw pair (3) is limited in axial movement, and the first electromagnetic clutch (12) is used for rotation or locking of the electric motor (11).
3. 3. The electric push rod mechanism for a commercial vehicle brake according to claim 2, characterized in that the parking brake module (2) comprises a clockwork spring (21) and a second electromagnetic clutch (22), wherein an inner ring of the clockwork spring (21) and a rotor of the second electromagnetic clutch (22) are connected with a screw of the ball screw pair (3), the clockwork spring (21) is limited in axial movement range, and the second electromagnetic clutch (22) is used for releasing elasticity of the clockwork spring (21) or maintaining elastic energy storage.
4. 4. An electrically controlled push rod mechanism for a commercial vehicle brake as claimed in claim 3, wherein said first electromagnetic clutch (12) and said second electromagnetic clutch (22) are of interlocking construction.
5. 5. An electric push rod mechanism for a commercial vehicle brake according to claim 3, characterized in that the clockwork spring (21) is a contact clockwork spring or a non-contact clockwork spring.
6. 6. An electric push rod mechanism for a commercial vehicle brake according to claim 3, further comprising a housing for providing a space for accommodating the service brake module (1), the parking brake module (2) and the ball screw pair (3), the housing comprising a first housing (13) and a second housing (23) integrally provided, the ball screw pair (3) being connected to the first housing (13) and the second housing (23) through bearings (4).
7. 7. The electric push rod mechanism for a commercial vehicle brake as claimed in claim 6, wherein the motor (11) adopts a frameless structure, the first housing (13) serves as a housing of the motor (11), and a heat radiation structure for the motor (11) is provided on the first housing (13).
8. 8. The electric push rod mechanism for a commercial vehicle brake as claimed in any one of claims 1-7, wherein the electric push rod mechanism is applied to a disc brake.
9. 9. The electric push rod mechanism for a commercial vehicle brake as claimed in any one of claims 1-7, wherein the electric push rod mechanism is applied to a drum brake.

Description

Electric control push rod mechanism for commercial vehicle brake Technical Field The invention relates to the technical field of commercial vehicles, in particular to an electric control push rod mechanism for a commercial vehicle brake. Background With the development of the trend of intelligent, networking and electric motor of automobiles, more and more automobile parts and systems realize electronic control. In the field of commercial vehicles, particularly in the heavy-duty car industry, more and more electronic systems are installed on the car, so that the comfort, the safety and the like of the car are further improved, the car is more intelligent, and the integration and the modularization are realized in terms of structure. Compared with the traditional pneumatic braking system, the electric control mechanical braking system has the advantages of quick response time, stable braking force, low braking noise and the like, and is a necessary trend of automobile intellectualization, so that the development of the electric control push rod mechanism has important significance. Disclosure of Invention The object of the present invention is to address the deficiencies of the prior art and thereby provide an electrically controlled push rod mechanism for a commercial vehicle brake. The invention is realized by adopting the following technical scheme: The electric control push rod mechanism for the commercial vehicle brake comprises a service brake module, a parking brake module and a ball screw pair, wherein the service brake module and the parking brake module are axially arranged and are respectively connected with the ball screw pair, and the service brake module and the parking brake module are respectively provided with braking thrust by the ball screw pair. As a further illustration of the invention, the service brake module comprises an electric motor and a first electromagnetic clutch, wherein the rotor of the electric motor and the rotor of the first electromagnetic clutch are respectively connected with a nut of the ball screw pair, the nut of the ball screw pair is limited to move axially, and the first electromagnetic clutch is used for rotating or locking the electric motor. As a further description of the invention, the parking brake module comprises a clockwork spring and a second electromagnetic clutch, wherein an inner ring of the clockwork spring and a rotor of the second electromagnetic clutch are connected with a screw rod of the ball screw pair, the clockwork spring is limited in axial movement range, and the second electromagnetic clutch is used for releasing elasticity of the clockwork spring or keeping elastic energy storage. As a further illustration of the invention, the first electromagnetic clutch and the second electromagnetic clutch are interlocking structures. As a further description of the invention, the clockwork spring is a contact clockwork spring or a non-contact clockwork spring. The parking brake device further comprises a shell, wherein the shell is used for providing a space for accommodating the service brake module, the parking brake module and the ball screw pair, the shell comprises a first shell and a second shell which are integrally arranged, and the ball screw pair is connected with the first shell and the second shell through bearings. As a further explanation of the invention, the motor adopts a frameless structure, the first housing is used as a housing of the motor, and a heat radiation structure for the motor is provided on the first housing. In a second aspect, the electrically controlled push rod mechanism is applied to a disc brake. In a third aspect, the electrically controlled pushrod mechanism is applied to a drum brake. Compared with the prior art, the invention has the following beneficial technical effects: The invention is used as an actuating mechanism of an electric control mechanical braking system, can be matched with two types of brakes, namely a disc brake and a drum brake, and can realize the advantages of quick response time, stable braking force, low braking noise and the like compared with the traditional pneumatic braking system, and simultaneously provides a basic control object for an intelligent automobile. Drawings FIG. 1 is a schematic diagram of an electronically controlled push rod mechanism of the present invention; FIG. 2 is a schematic view of an electronically controlled push rod mechanism for a disc brake of the present invention; fig. 3 is a schematic view of an electric push rod mechanism for a drum brake according to the present invention. In the figure, 1, a service brake module, 11, a motor, 12, an electromagnetic clutch, 13, a shell, 2, a parking brake module, 21, a clockwork spring, 22, an electromagnetic clutch, 23, a shell, 3, a ball screw pair, 4 and a bearing. Detailed Description Example 1 As shown in fig. 1, the electric control push rod mechanism for the commercial vehicle brake comprises a service brake mo