CN111169442A - Brake assembly and brake device for realizing power-off brake function - Google Patents
Brake assembly and brake device for realizing power-off brake function Download PDFInfo
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- CN111169442A CN111169442A CN202010136989.4A CN202010136989A CN111169442A CN 111169442 A CN111169442 A CN 111169442A CN 202010136989 A CN202010136989 A CN 202010136989A CN 111169442 A CN111169442 A CN 111169442A
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- push rod
- guide
- piston push
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/745—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/746—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive and mechanical transmission of the braking action
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- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention relates to a brake assembly and a brake device for realizing a power-off brake function, which comprise two action parts, wherein the two action parts are connected into a whole when being electrified and generate pre-pressure between the two action parts, and are used for releasing the pre-pressure when being powered off and driving the two action parts to be separated from each other; the brake assembly is small in size, compact in structure, convenient to integrate, mount and dismount, and capable of achieving the power-off automatic brake function, the power of the power-off brake is derived from pre-pressure generated when two action parts are connected together, and the brake assembly is not required to be driven by an additional motor, so that the brake and the power-off automatic brake function can be achieved by only one motor of the whole brake device or the brake system, the whole brake device and the brake system are facilitated to be simplified, the cost is reduced, in addition, the brake assembly is beneficial to building an automatic control brake system, and the brake assembly is particularly suitable for vehicles in a personal rapid transportation system.
Description
Technical Field
The invention relates to the technical field of rail transit equipment, in particular to a brake assembly and a brake device for realizing a power-off brake function.
Background
A brake system is one of important components of a vehicle, and is mainly used for providing deceleration and braking for the vehicle, and a brake system commonly used in the prior art generally comprises a brake device (or called as an energy supply device), a control device, a transmission device and a brake, wherein the brake device comprises various components for supplying, adjusting energy required by braking and improving the state of an energy transfer medium, and the control device comprises various components for generating braking action and controlling braking effect, such as a vacuum booster pump commonly used in the prior art; the transmission includes various components that transfer braking energy to the brakes, such as a master cylinder (as shown in FIG. 1) commonly used in the art; the brake comprises components which generate a force (braking force) which counteracts the movement or tendency of movement of the vehicle, such as brake drums, disc brakes, fixed-caliper disc brakes, floating-caliper disc brakes and the like, which are customary in the art.
The existing brake system usually needs power supply to work normally, however, the existing brake system usually cannot realize the automatic braking function under the condition of power failure, and especially for trains and motor cars running by power, and vehicles used in personal rapid transportation systems, etc., the existing brake system has a great safety problem, and needs to be improved urgently.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a brake assembly which is small in size and compact in structure, is arranged in a brake device and can realize the function of automatic braking when power is off, thereby effectively improving the safety, being beneficial to constructing an automatic control brake system and being especially suitable for vehicles in a personal rapid transport system.
The technical scheme adopted by the invention is as follows:
a brake assembly for realizing a power-off brake function comprises two action parts, wherein the two action parts are connected into a whole when powered on and generate pre-pressure between the two action parts, and the two action parts are released and driven to separate from each other when the power is off. The brake assembly provided by the scheme can be arranged in a transmission mechanism of the existing brake device or brake system, and power is taken from a power supply or a power supply line of the brake device or brake system, so that on one hand, the two action parts can be firmly connected together under the condition of electrification, and pre-pressure is generated so as to synchronously act, so that the brake device or brake system can normally carry out transmission; on the other hand, whether the brake device or the system is powered off or not can be detected, when the automatic device or the system is powered off, the constraint disappears, the pre-pressure is automatically released, and the two action parts are driven to separate, namely the two action parts move relatively, so that the function of power-off transmission is achieved, a piston sleeve in the master cylinder can be pushed to act, the pressure of brake oil in the master cylinder is changed, and the purpose of automatic braking (braking) is achieved; by adopting the structural design, the power of the power-off brake comes from the pre-pressure generated when the two action parts are connected together, and the power-off brake is driven without an additional motor, so that the whole brake device or the brake system can realize the functions of braking and power-off automatic braking only by one motor, the whole brake device and the brake system are favorably simplified, and the cost is reduced.
In order to ensure that the action part moves along a straight line under the driving of the pre-pressure after the power failure, the device further comprises a guide part which is used for guiding the separation process of the action part. Under the condition of power failure, one action part can move linearly relative to the other action part, so that a piston sleeve in a brake master cylinder is pushed linearly to act, and the purpose of automatic braking is achieved.
In order to generate the pre-pressure, the brake device further comprises a brake spring, wherein the brake spring is arranged between the two action parts and is used for generating the pre-pressure. The brake spring is arranged between the two action parts, the two action parts are connected into a whole under the condition of power supply, the brake spring is in a compressed state, pre-pressure is generated, after the power supply is cut off, the constraint between the two action parts disappears, and the brake spring can freely extend, so that the pre-pressure can be automatically generated, and the aim of automatic braking is fulfilled.
In order to enable the two action components to be connected into a whole under the condition of electricity, at least one action component is preferably an electromagnet, and the electromagnet is used for generating adsorption force when being electrified and enabling the two action components to be connected into a whole;
or at least one action part is provided with an electromagnet, and the electromagnet is used for generating adsorption force when electrified and connecting the two action parts into a whole. The electromagnet can generate strong magnetic force under the condition of being electrified, so that the two action parts are firmly adsorbed into a whole, the brake spring is kept in a compressed state, pre-pressure is generated, when the power is off, the magnetic force of the electromagnet disappears, the pre-pressure can be released, one action part can move relative to the other action part under the action of the elastic force of the brake spring, and a piston sleeve in the brake master cylinder is pushed to act, so that the purpose of automatic braking is achieved.
In order to facilitate the installation or integration of the brake assembly into a brake device or a brake system, further, at least one of the actuating members is provided with a connecting portion for connecting a transmission member, and the connecting portion is a connecting hole provided with an internal thread or a connecting column provided with an external thread. Through setting up connecting portion, can be convenient with this brake assembly installation with integrated to in current arresting gear and braking system to realize outage automatic braking function.
In one scheme, the two action parts are respectively a movable part and a fixed part, wherein the fixed part comprises an electromagnet, the movable part is made of ferrous materials or is provided with an adsorption plate made of ferrous materials,
the guide part is provided with a guide hole, the movable part and the fixed part are respectively arranged in the guide hole, one end of the guide hole is provided with a blocking part, the brake spring is arranged between the movable part and the fixed part, and the movable part and the fixed part respectively form a moving pair with the guide hole,
the connecting part is arranged on the movable part and/or the fixed part. The brake assembly provided by the scheme can be installed and integrated in the middle or one end of a transmission mechanism in the existing brake device or system, and is very flexible, convenient and strong in practicability; the movable part and the fixed part are respectively arranged in the guide holes, so that the guide holes can be used for guiding the movement of the movable part and the fixed part, the structure of the whole assembly is small and compact, and the movable part and the fixed part are particularly suitable for vehicles in a personal rapid transport system.
In another scheme, the two action parts are respectively a movable part and a fixed part, wherein the movable part comprises a support body, one side of the support body is provided with a piston push rod or a connecting part for connecting the piston push rod, the fixed part comprises a base, one side of the base is provided with a driven part for transmission or a connecting part for connecting the driven part,
the guide part comprises a first guide part arranged on the other side of the support body and a second guide part arranged on the other side of the base, the first guide part and the second guide part form a moving pair,
the brake spring is arranged between the support body and the base,
the support body and/or the base are electromagnets, or the support body and/or the base are respectively provided with electromagnets, and the electromagnets are used for enabling the support body and the base to be adsorbed into a whole in a power-on state and enabling the brake spring to be in a compressed state. The brake assembly provided by the scheme can be installed and integrated in the middle of a transmission mechanism in the existing brake device or system due to the fact that the brake assembly is guided inside, the piston push rod is matched with a piston sleeve in the existing brake master cylinder so as to be inserted into the piston sleeve, and the brake assembly can be conveniently installed in the brake device by utilizing the driven part; when the braking device normally works, the electromagnet gets power from a line or a power supply which supplies power for the braking device or a braking system, on one hand, the electromagnet can generate adsorption force, so that the movable part and the fixed part are firmly adsorbed together and form a whole so as to synchronously act, and the braking force can be transmitted according to the braking requirement, thereby achieving the purpose of braking.
Preferably, the first guide part is a sleeve, and the second guide part is a guide rod matched with the sleeve, or the first guide part is a guide rod, and the second guide part is a sleeve matched with the guide rod. In the scheme, the sleeve and the guide rod form a moving pair, so that a good guide function can be realized, and the movable part can move linearly relative to the fixed part under the condition of power failure, so that the piston sleeve in the brake master cylinder is pushed linearly to act, and the purpose of automatic braking is achieved.
The utility model provides a braking device, includes driving motor, drive mechanism, and the piston push rod of the piston sleeve looks adaptation in the master cylinder, drive mechanism's one end with driving motor links to each other, the other end with piston push rod links to each other, driving motor is used for driving piston push rod and makes linear motion, still includes braking component, braking component set up in drive mechanism, or set up in drive mechanism with between the piston push rod, or one of them action part with drive mechanism links to each other, and braking component and driving motor get the electricity in same position or power department. In the scheme, along the transmission direction from the driving motor and the transmission mechanism to the piston push rod, the brake assembly can be arranged in the transmission mechanism to realize the automatic brake function, can also be arranged between the transmission mechanism and the piston push rod to realize the automatic brake function, can also be independently arranged and is connected with the transmission mechanism through an action part, so that the automatic brake function can be realized, the brake device has various structures and meets the requirements of different occasions; the brake assembly and the driving motor are powered at the same position or a power supply, so that power can be supplied to the brake assembly, whether the brake device is powered off or not can be monitored in real time by using the brake assembly, and when the power off is monitored, pre-pressure can be automatically released, and the purpose of automatic braking is achieved.
Preferably, the brake system further comprises a mounting frame, the transmission mechanism comprises a cam and a driven part, the cam is fixed on a rotating shaft, the rotating shaft is movably mounted on the mounting frame, the driven part is matched with the cam and forms a cam mechanism, the rotating shaft is connected with the driving motor, the driven part is connected with the piston push rod, and one end of the mounting frame is provided with a connector for connecting a brake master cylinder;
the brake assembly set up in between piston push rod and the driven part, just movable part and fixed part respectively through connecting portion with piston push rod reaches the driven part links to each other, or, guide part among the brake assembly is fixed in the mounting bracket, movable part or fixed part pass through coupling mechanism with the pivot links to each other, and brake assembly is used for driving piston push rod along its central axis direction linear motion when the outage. In the scheme, the cam mechanism is formed by the driven part and the cam, and the rotating speed of the cam is controlled by the driving motor, so that when the driving motor rotates forwards or reversely, the rotating power of an output shaft of the motor can be converted into power for pushing the piston push rod to linearly move along the direction of the central axis of the piston push rod through the cam mechanism and transmitted to the piston push rod, one end of the piston push rod is sleeved in the piston sleeve, and when the piston push rod moves, the piston sleeve can be extruded, so that the piston sleeve in the master brake pump is pushed to act, the pressure of brake oil in the master brake pump is changed, and the purpose of braking is achieved; adopt such structural design, through reasonable control driving motor's rotational speed, can drive the piston push rod and move according to the speed of setting for, thereby convenient realization linear brake function, can effectively avoid the easy empty stroke that appears that exists among the prior art and the shorter problem of brake stroke, more be favorable to realizing steady brake, and integrate brake assembly behind this arresting gear, make this arresting gear can realize outage automatic braking function, be favorable to improving the security, in addition, this arresting gear's compact structure, small in size, can effectively practice thrift installation space, be particularly useful for the vehicle in the individual rapid transit system.
Compared with the prior art, the brake assembly and the brake device for realizing the power-off brake function have the following beneficial effects that:
1. the brake assembly is small in size, compact in structure, convenient to integrate, install and disassemble, and capable of achieving the power-off automatic braking function, thereby effectively improving safety, being beneficial to constructing an automatic control brake system, and being particularly suitable for vehicles in personal rapid transit systems.
2. According to the brake assembly, the power of the power-off brake comes from the pre-pressure generated when the two action parts are connected together, and the brake assembly is not required to be driven by an additional motor, so that the brake and the power-off automatic brake function can be realized by only one motor in the whole brake device or brake system, the whole brake device and brake system can be simplified, and the cost is reduced.
3. The braking device not only can realize the function of automatic power-off braking, but also can realize linear braking, thereby effectively avoiding the problems of short idle stroke and braking stroke in the prior art and being more favorable for realizing stable braking.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a brake assembly provided in embodiment 1 of the present invention.
Fig. 2 is a second schematic structural diagram of a brake assembly provided in embodiment 1 of the present invention.
Fig. 3 is a cross-sectional view of fig. 1.
Fig. 4 is a schematic structural diagram of a conventional master brake pump.
Fig. 5 is a sectional view of a brake device provided in embodiment 2 of the present invention.
Fig. 6 is a schematic structural diagram of a cam in the brake device provided in embodiment 2 of the present invention.
Fig. 7 is a sectional view of a brake apparatus provided in embodiment 2 of the present invention, after being mounted on a master cylinder.
Fig. 8 is a sectional view of a brake device provided in embodiment 4 of the present invention.
Fig. 9 is a sectional view of another brake device provided in embodiment 4 of the present invention.
Description of the drawings
A master cylinder 100, a piston sleeve 101,
A driving motor 201, a speed reducer 202, a rotating shaft 203, a cam 204, a mounting bracket 205, a connecting head 206, a connecting hole 207, a return spring 209, a contour surface 210, a shaft hole 211, a rotating part 212, a swing rod 213, a fisheye bearing 214, a,
A movable member 300, a support body 301, a piston rod 302, a first guide 303,
Fixing member 400, base 401, second guide 402, bolt 404,
An electromagnet 500,
A brake spring 600,
A guide part 700, a guide hole 701, a stopper 702,
A connecting part 800,
A drive chain 901 and a sprocket 902.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1 to 3, in the present embodiment, a brake assembly for implementing a power-off brake function is provided, which includes two actuating components, where the two actuating components are connected together when powered on and generate a pre-pressure between the two actuating components, and are used to release the pre-pressure when powered off and drive the two actuating components to separate from each other. The brake assembly provided by the embodiment can be arranged in a transmission mechanism of an existing brake device or brake system, and power is supplied from a power supply line or power supply of the brake device or brake system, so that on one hand, two action parts can be firmly connected together under the condition of electrification, and pre-pressure is generated so as to synchronously act, so that the brake device or brake system can normally perform transmission; on the other hand, whether the brake device or the system is powered off or not can be detected, when the automatic device or the system is powered off, the constraint disappears, the pre-pressure is automatically released, and the two action parts are driven to separate, namely the two action parts move relatively, so that the power-off transmission function is achieved, the piston sleeve 101 in the master cylinder 100 can be pushed to act, the pressure of brake oil in the master cylinder 100 is changed, and the purpose of automatic braking (braking) is achieved; by adopting the structural design, the power of the power-off brake comes from the pre-pressure generated when the two action parts are connected together, and the power-off brake is driven without an additional motor, so that the whole brake device or the brake system can realize the functions of braking and power-off automatic braking only by one motor, the whole brake device and the brake system are favorably simplified, and the cost is reduced.
In order to ensure that the action part moves along a straight line under the driving of the pre-pressure after the power failure, the brake assembly further comprises a guide part 700, and the guide part 700 is used for guiding the separation process of the action part. Ensures that one action part can move linearly relative to the other action part under the condition of power failure, thereby linearly pushing the piston sleeve 101 in the master cylinder 100 to act, and achieving the purpose of automatic braking.
In order to generate the pre-pressure, the brake assembly further comprises a brake spring 600, wherein the brake spring 600 is arranged between the two acting parts and is used for generating the pre-pressure. That is, the brake spring 600 is disposed between the two actuating members, and when electricity is supplied, the two actuating members are connected to each other to make the brake spring 600 in a compressed state, thereby generating a pre-pressure, and when electricity is turned off, the constraint between the two actuating members is removed, and the brake spring 600 can be freely extended, thereby automatically pre-pressing and achieving the purpose of automatic braking.
In order to enable the two action components to be connected into a whole under the condition of electricity, in the brake assembly, at least one action component is an electromagnet 500, and the electromagnet 500 is used for generating adsorption force when electrified and enabling the two action components to be connected into a whole;
or, at least one of the action components is provided with an electromagnet 500, and the electromagnet 500 is used for generating adsorption force when electrified and connecting the two action components into a whole. The electromagnet 500 can generate strong magnetic force under the condition of power-on, so that the two action parts are firmly adsorbed into a whole, the brake spring 600 is kept in a compressed state, and pre-pressure is generated, when the power is off, the magnetic force of the electromagnet 500 disappears, the pre-pressure can be released, one action part can move relative to the other action part under the action of the elastic force of the brake spring 600, and the piston sleeve 101 in the brake master cylinder 100 is pushed to act, so that the purpose of automatic braking is achieved.
In order to facilitate the installation or integration of the brake assembly into a brake device or a brake system, at least one of the actuating members in the brake assembly is provided with a connecting portion 800 for connecting a transmission member, and the connecting portion 800 is a connecting hole 207 provided with an internal thread or a connecting column provided with an external thread. Through setting up connecting portion 800, can be convenient with this brake assembly installation with integrated to in current arresting gear and braking system to realize outage automatic braking function.
As an example, in this embodiment, the two acting components in the brake assembly are respectively a movable component 300 and a fixed component 400, as shown in fig. 1-3, the movable component 300 includes a supporting body 301, one side of the supporting body 301 is provided with a piston push rod 302 or a connecting portion 800 for connecting the piston push rod 302, the fixed component 400 includes a base 401, one side of the base 401 is provided with a driven portion for transmission, or the connecting portion 800 for connecting the driven portion is provided, the guide portion 700 includes a first guide portion 303 disposed on the other side of the supporting body 301 and a second guide portion 402 disposed on the other side of the base 401, the first guide portion 303 and the second guide portion 402 form a moving pair, the brake spring 600 is disposed between the supporting body 301 and the base 401, the supporting body 301 and/or the base 401 is an electromagnet 500, or the support body 301 and/or the base 401 are respectively provided with an electromagnet 500, and the electromagnet 500 is used for attracting the support body 301 and the base 401 into a whole in a power-on state and enabling the brake spring 600 to be in a compressed state. The brake assembly provided by the scheme can be installed and integrated in the middle of a transmission mechanism in the existing brake device or system due to internal guidance, the piston push rod 302 is matched with the piston sleeve 101 in the existing master cylinder 100 so as to be inserted into the piston sleeve 101, and the brake assembly can be conveniently installed in the brake device by utilizing the driven part; when the braking device normally works, the electromagnet 500 gets power from a line or a power supply for supplying power to the braking device or a braking system, on one hand, the electromagnet 500 can generate an adsorption force, so that the movable part 300 and the fixed part 400 are firmly adsorbed together and form a whole so as to synchronously act, and thus, braking force can be transmitted according to braking requirements, thereby achieving the purpose of braking, on the other hand, whether the braking device is powered off or not can be detected, when the automatic device is powered off, the adsorption force on the electromagnet 500 disappears, the elastic force of the brake spring 600 is released, the movable part 300 is driven to move relative to the fixed part 400 and is separated from the fixed part 400, and meanwhile, the piston sleeve 101 in the master brake pump 100 is pushed to act, so that the pressure of brake oil in the master brake pump 100 is changed, and the purpose of automatic braking (braking) is achieved.
In the present embodiment, the supporting body 301 and the base 401 mainly play a supporting role, and the shape may be determined according to actual requirements, for example, in the present embodiment, the supporting body 301 adopts a disc-shaped structure, and the base 401 adopts a U-shaped structure, as shown in fig. 1-3, and the suction portion is fixed to the base 401 by a bolt 404.
As shown in fig. 3, in the present embodiment, the electromagnet 500 is a ring structure, and the first guide portion 303, the second guide portion 402 and the brake spring 600 are respectively located in a central through hole of the electromagnet 500. So that the movable part 300 and the fixed part 400 adsorbed together have a more compact and regular structure, and are more convenient to integrate and install. The electromagnet 500 is connected with a connector lug or a power supply for supplying power to the braking device through a lead so as to synchronously monitor whether power is off or not; as an embodiment, as shown in fig. 3, the electromagnet 500 is disposed on the base 401, the supporting body 301 is made of ferrous material, or the supporting body 301 is provided with an adsorption plate made of ferrous material, so as to cooperate with the adsorption part, and in the powered state, the movable part 300 and the fixed part 400 are firmly adsorbed into a whole, as shown in fig. 1-3, when the power is off, the magnetic force of the electromagnet 500 disappears, and under the elastic force of the brake spring 600, the movable part 300 moves relative to the fixed part 400 and pushes the piston sleeve 101 in the master cylinder 100 to act, thereby achieving the purpose of automatic braking.
In order to ensure that the movable member 300 moves linearly relative to the fixed member 400 after power failure, preferably, the first guide portion 303 is a sleeve, and the second guide portion 402 is a guide rod matched with the sleeve so as to form a moving pair; alternatively, the first guiding portion 303 is a guiding rod, and the second guiding portion 402 is a sleeve adapted to the guiding rod, as shown in fig. 1 to 3; the sleeve and the guide rod form a moving pair, so that a good guide function can be realized, and the movable part 300 can linearly move relative to the fixed part 400 under the condition of power failure, so that the piston sleeve 101 in the master cylinder 100 is linearly pushed to act, and the aim of automatic braking is fulfilled.
Example 2
The embodiment provides a braking device, which includes a driving motor 201, a transmission mechanism, and a piston push rod 302 (the conventional master cylinder 100 is shown in fig. 4) adapted to a piston sleeve 101 in a master cylinder 100, where one end of the transmission mechanism is connected to the driving motor 201, and the other end is connected to the piston push rod 302, and the driving motor 201 is used to drive the piston push rod 302 to make a linear motion; the brake assembly is arranged in the transmission mechanism or between the transmission mechanism and the piston push rod 302, as shown in fig. 5-7, and the brake assembly and the driving motor 201 take electricity at the same position or power source. In the scheme, along the transmission direction from the driving motor 201 and the transmission mechanism to the piston push rod 302, the brake assembly can be mounted inside the transmission mechanism to realize the automatic brake function, can also be mounted between the transmission mechanism and the piston push rod 302 to realize the automatic brake function, can also be independently arranged, and is connected with the transmission mechanism through an action part, so that the automatic brake function can be realized, the brake device has various structures, and the requirements of different occasions are met; the brake assembly and the driving motor 201 are powered at the same position or a power supply, so that power can be supplied to the brake assembly, whether the brake device is powered off or not can be monitored in real time by using the brake assembly, and when the power off is monitored, pre-pressure can be automatically released, and the purpose of automatic braking is achieved.
Preferably, the braking device further comprises a mounting frame 205, the transmission mechanism comprises a cam 204 and a driven part, the cam 204 is fixed on a rotating shaft 203, the rotating shaft 203 is movably mounted on the mounting frame 205, the driven part is matched with the cam 204 and forms a cam 204 mechanism, the rotating shaft 203 is connected with the driving motor 201, the driven part is connected with the piston push rod 302, and one end of the mounting frame 205 is provided with a connector 206 for connecting a master cylinder; the brake assembly is disposed between the piston rod 302 and the driven part, and the movable part 300 and the fixed part 400 are respectively connected to the piston rod 302 and the driven part through a connecting part 800, as shown in fig. 5-7. In the scheme, a cam 204 mechanism is formed by the driven part and the cam 204, and the rotating speed of the cam 204 is controlled by the driving motor 201, so that when the driving motor 201 rotates forwards or reversely, the rotating power of the output shaft of the motor can be converted into power for pushing the piston push rod 302 to move linearly along the central axis direction of the piston push rod 302 through the cam 204 mechanism and transmitted to the piston push rod 302, one end of the piston push rod 302 is sleeved in the piston sleeve 101, and when the piston push rod 302 moves, the piston sleeve 101 is extruded to push the piston sleeve 101 in the master cylinder 100 to act, so that the pressure of brake oil in the master cylinder 100 is changed, and the purpose of braking is achieved; adopt such structural design, through the rotational speed of reasonable control driving motor 201, can drive piston push rod 302 and move according to the speed of setting for, thereby convenient realization linear brake function, can effectively avoid the problem that the idle stroke appears easily and the brake stroke is shorter that exists among the prior art, more be favorable to realizing steady brake, and integrate brake assembly behind this arresting gear, make this arresting gear can realize outage automatic braking function, be favorable to improving the security, in addition, this arresting gear's compact structure, small in size, can effectively practice thrift installation space, be particularly useful for the vehicle in the individual rapid transit system.
It will be appreciated that there are various embodiments of the follower portion, and that the follower portion includes, as an example, a follower lever fixed to the base 401, the follower lever and the cam 204 constituting a cam 204 mechanism for transmission and control of the power; in a further scheme, a rotating part 212 is further arranged at the end part of the driven rod, and the rotating part 212 can be a bearing or a roller so as to be in rolling contact with the cam 204 and reduce abrasion;
as shown in fig. 5 and fig. 7, as another example, the driven portion includes a swing rod 213, the swing rod 213 is provided with a rotating component 212, one end of the swing rod 213 is hinged to the base 401 through the connecting portion 800, the other end is hinged to the mounting bracket 205, the rotating component 212 contacts with the cam 204 and forms a cam 204 mechanism, and the rotating component 212 may be a bearing or a roller; the rotating part 212 is in contact with the cam 204, so that rolling contact can be realized, abrasion can be reduced, the service life is prolonged, and a more stable braking process can be realized; the swing of the swing rod 213 is adopted for transmission, so that a more stable braking process is favorably realized; it is understood that the swing link 213 may be a straight link or a bent link, for example, the swing link 213 may be a bent link having an L-shaped structure, as shown in fig. 5 and 7, the rotating member 212 may be disposed at a corner of the swing link 213, and the swing link 213 may be hinged to the base 401 through the fisheye bearing 214, and the fisheye bearing 214 may be conveniently mounted on the connecting portion 800 of the base 401.
As shown in fig. 6, in the present embodiment, the cam 204 is provided with a shaft hole 211 for connecting with the rotating shaft 203, a surface of the cam 204 for contacting with the driven lever or the rotating member 212 is a profile surface 210, and a distance between the profile surface 210 and a central point of the cam 204 is gradually increased along a circumferential direction of the cam 204, so that the piston push rod 302 is driven to move at a uniform speed or at a uniform acceleration, thereby implementing a linear braking function, and facilitating a solution of a problem of short idle stroke and braking stroke, thereby facilitating a smooth braking.
As shown in fig. 5 and 7, in this embodiment, the braking device further includes a return spring 209, the return spring 209 is disposed outside the piston push rod 302, one end of the return spring 209 is fixed to the supporting body 301, and the other end of the return spring 209 is fixed to the mounting frame 205, and the return spring 209 is used for providing a restoring force for the braking assembly to ensure that the driven portion is in contact with the cam 204. So that the driven portion is brought into close contact with the cam 204 and acts in synchronization to prevent an idle stroke during braking.
In a more complete scheme, as shown in fig. 5 and 7, the connector 206 is a cylindrical structure, and a connection hole 207 adapted to the master cylinder is formed at an end of the connector 206, so that the fixation and connection are realized by using a bolt 404; the reliable connection between the braking device and the master cylinder is convenient to realize, and the assembly and the disassembly of the braking device are convenient.
In a more complete scheme, the braking device further includes a speed reducer 202, the speed reducer 202 is fixed to the mounting frame 205 and is respectively connected to the driving motor 201 and the rotating shaft 203, as shown in fig. 5 and 7, the speed reducer 202 is disposed between the driving motor 201 and the cam 204, and performs functions of reducing a rotating speed and increasing a torque, so as to effectively improve a braking force and meet requirements of different braking forces.
Example 3
On the basis of embodiment 1, this embodiment 3 provides a braking assembly with another structure, as shown in fig. 8 and 9, the two acting components are respectively a movable component 300 and a fixed component 400, wherein the fixed component 400 includes an electromagnet 500, the movable component 300 is made of a ferrous material or is provided with an adsorption plate made of a ferrous material,
the guide part 700 is provided with a guide hole 701, the movable part 300 and the fixed part 400 are respectively arranged in the guide hole 701, one end of the guide hole 701 is provided with a blocking part 702, the brake spring 600 is arranged between the movable part 300 and the fixed part 400, and the movable part 300 and the fixed part 400 respectively form a sliding pair with the guide hole 701,
the connection part 800 is provided to the movable member 300 and/or the fixed member 400. The brake assembly provided by the scheme can be installed and integrated in the middle or one end of a transmission mechanism in the existing brake device or system, and is very flexible, convenient and strong in practicability; the movable part 300 and the fixed part 400 are respectively arranged in the guide holes 701, so that the guide holes 701 can be used for guiding the movement of the movable part 300 and the fixed part 400, the structure of the whole assembly is smaller and more compact, and the movable part 300 and the fixed part 400 are particularly suitable for vehicles in a personal rapid transit system.
As shown in fig. 8 and 9, for example, the fixed member 400 is an electromagnet 500, the guide portion 700 is a cylindrical structure, a guide hole 701 is formed in the guide portion, a stopper portion 702 is formed at one end (or upper end), the fixed member 400 and the movable member 300 are respectively disposed in the guide hole 701, the brake spring 600 is disposed between the fixed member 400 and the movable member 300, and the movable member 300 is provided with a connection portion 800 for connecting a braking device or system.
Since the movable member 300 and the fixed member 400 are respectively disposed in the guide portion 700 in this embodiment, compared to the brake assembly provided in embodiment 1, the brake assembly can be disposed not only in the movable mechanism of the brake device, but also between the transmission mechanism and the piston push rod 302, as shown in fig. 8 and 9, in both cases, it is only necessary to respectively dispose the connecting portion 800 on the fixed member 400 and the movable member 300 so as to be installed in the brake device, and in addition, the brake assembly can also connect one or more of the actuating members to the transmission mechanism, and at this time, only one connecting portion 800 needs to be disposed on the fixed member 400 or the movable member 300 to achieve the connection with the transmission mechanism, and the automatic braking function can also be achieved.
Example 4
The embodiment provides a braking device, which comprises a driving motor 201, a transmission mechanism and a piston push rod 302 matched with a piston sleeve 101 in a master cylinder 100, wherein one end of the transmission mechanism is connected with the driving motor 201, the other end of the transmission mechanism is connected with the piston push rod 302, and the driving motor 201 is used for driving the piston push rod 302 to do linear motion; the device further comprises a brake assembly in embodiment 3, wherein the brake assembly is arranged in the transmission mechanism, or between the transmission mechanism and the piston push rod 302, or one action part is connected with the transmission mechanism, and the brake assembly and the driving motor 201 take electricity at the same position or at a power supply. In the scheme, along the transmission direction from the driving motor 201 and the transmission mechanism to the piston push rod 302, the brake assembly can be mounted inside the transmission mechanism to realize the automatic brake function, can also be mounted between the transmission mechanism and the piston push rod 302 to realize the automatic brake function, can also be independently arranged, and is connected with the transmission mechanism through an action part, so that the automatic brake function can be realized, the brake device has various structures, and the requirements of different occasions are met; the brake assembly and the driving motor 201 are powered at the same position or a power supply, so that power can be supplied to the brake assembly, whether the brake device is powered off or not can be monitored in real time by using the brake assembly, and when the power off is monitored, pre-pressure can be automatically released, and the purpose of automatic braking is achieved.
Preferably, the braking device further comprises a mounting frame 205, the transmission mechanism comprises a cam 204 and a driven part, the cam 204 is fixed on a rotating shaft 203, the rotating shaft 203 is movably mounted on the mounting frame 205, the driven part is matched with the cam 204 and forms a cam 204 mechanism, the rotating shaft 203 is connected with the driving motor 201, the driven part is connected with the piston push rod 302, and one end of the mounting frame 205 is provided with a connector 206 for connecting a master cylinder; the braking assembly is disposed between the piston rod 302 and the driven part, and the movable part 300 and the fixed part 400 are respectively connected to the piston rod 302 and the driven part through a connecting part 800, or a guiding part 700 in the braking assembly is fixed to the mounting frame 205, the movable part 300 or the fixed part 400 is connected to the rotating shaft 203 through a connecting mechanism, and the braking assembly is used for driving the piston rod 302 to move linearly along the central axis direction thereof when the power is off, as shown in fig. 8 and 9. In the scheme, a cam 204 mechanism is formed by the driven part and the cam 204, and the rotating speed of the cam 204 is controlled by the driving motor 201, so that when the driving motor 201 rotates forwards or reversely, the rotating power of the output shaft of the motor can be converted into power for pushing the piston push rod 302 to move linearly along the central axis direction of the piston push rod 302 through the cam 204 mechanism and transmitted to the piston push rod 302, one end of the piston push rod 302 is sleeved in the piston sleeve 101, and when the piston push rod 302 moves, the piston sleeve 101 is extruded to push the piston sleeve 101 in the master cylinder 100 to act, so that the pressure of brake oil in the master cylinder 100 is changed, and the purpose of braking is achieved; adopt such structural design, through the rotational speed of reasonable control driving motor 201, can drive piston push rod 302 and move according to the speed of setting for, thereby convenient realization linear brake function, can effectively avoid the problem that the idle stroke appears easily and the brake stroke is shorter that exists among the prior art, more be favorable to realizing steady brake, and integrate brake assembly behind this arresting gear, make this arresting gear can realize outage automatic braking function, be favorable to improving the security, in addition, this arresting gear's compact structure, small in size, can effectively practice thrift installation space, be particularly useful for the vehicle in the individual rapid transit system.
As an example, as shown in fig. 8 and 9, the movable member 300 and the fixed member 400 are respectively provided with a connecting portion 800, so that the brake assembly can be disposed between the piston push rod 302 and the driven portion, the guide portion 700 can be fixed to the mounting frame 205, the movable member 300 and the fixed member 400 can be connected to the piston push rod 302 and the driven portion, respectively, and the brake assembly can transmit the power of the driving motor 201 when power is supplied, so as to implement a braking function, or can drive the piston push rod 302 to operate by releasing pre-pressure when power is off, so as to implement an automatic braking function.
As an example, as shown in fig. 8 and 9, an actuating component in the braking assembly provided in embodiment 3 is connected to the transmission mechanism to implement an automatic braking function, as shown in the figure, the guiding portion 700 in the braking assembly is fixed to the mounting bracket 205, the movable component 300 is connected to the rotating shaft 203 through a connecting mechanism, the connecting mechanism is a chain transmission mechanism, as shown in the figure, the rotating shaft 203 is provided with a sprocket 902, one end of a transmission chain 901 is connected to the movable component 300, the other end of the transmission chain bypasses the sprocket 902, the cam 204 and the sprocket 902 rotate synchronously, when power is supplied, the cam 204 rotates clockwise to implement a braking function, at this time, the movable component 300 and the fixed component 400 are connected into a whole, and normal braking is not disturbed; when the power is off, the pre-pressure is released, the movable part 300 is driven to be separated from the fixed part 400, so that the movable part 300 moves downwards and drives the chain wheel 902 to rotate clockwise through the transmission chain 901, and the cam 204 is driven to rotate clockwise synchronously, thereby achieving the purpose of automatic braking.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (10)
1. A brake assembly for realizing a power-off brake function is characterized by comprising two action parts, wherein the two action parts are connected into a whole when being powered on and generate pre-pressure between the two action parts, and the two action parts are released and driven to separate from each other when being powered off.
2. The brake assembly for achieving the electric break brake function according to claim 1, further comprising a guide portion for guiding a separation process of the actuating member.
3. The brake assembly for achieving a power-off brake function as claimed in claim 2, further comprising a brake spring disposed between the two acting members for generating the pre-pressure.
4. The brake assembly for realizing the power-off brake function according to claim 3, wherein at least one of the action parts is an electromagnet, and the electromagnet is used for generating an adsorption force when being electrified and connecting the two action parts into a whole;
or at least one action part is provided with an electromagnet, and the electromagnet is used for generating adsorption force when electrified and connecting the two action parts into a whole.
5. The brake assembly for realizing the power-off brake function according to claim 4, wherein at least one action part is provided with a connecting part for connecting with a transmission part, and the connecting part is a connecting hole provided with internal threads or a connecting column provided with external threads.
6. The brake assembly for realizing the power-off brake function according to claim 5, wherein the two action components are respectively a movable component and a fixed component, wherein the fixed component comprises an electromagnet, the movable component is made of ferrous material or provided with an adsorption plate made of ferrous material,
the guide part is provided with a guide hole, the movable part and the fixed part are respectively arranged in the guide hole, one end of the guide hole is provided with a blocking part, the brake spring is arranged between the movable part and the fixed part, and the movable part and the fixed part respectively form a moving pair with the guide hole,
the connecting part is arranged on the movable part and/or the fixed part.
7. The brake assembly for realizing the power-off brake function according to claim 5, wherein the two action parts are a movable part and a fixed part respectively, wherein the movable part comprises a support body, one side of the support body is provided with a piston push rod or a connecting part for connecting the piston push rod, the fixed part comprises a base, one side of the base is provided with a driven part for transmission, or the connecting part for connecting the driven part is provided,
the guide part comprises a first guide part arranged on the other side of the support body and a second guide part arranged on the other side of the base, the first guide part and the second guide part form a moving pair,
the brake spring is arranged between the support body and the base,
the support body and/or the base are electromagnets, or the support body and/or the base are respectively provided with electromagnets, and the electromagnets are used for enabling the support body and the base to be adsorbed into a whole in a power-on state and enabling the brake spring to be in a compressed state.
8. The brake assembly for achieving the power-off brake function as claimed in claim 7, wherein the first guide portion is a sleeve and the second guide portion is a guide rod matched with the sleeve, or the first guide portion is a guide rod and the second guide portion is a sleeve matched with the guide rod.
9. A braking device comprises a driving motor, a transmission mechanism and a piston push rod matched with a piston sleeve in a brake master cylinder, wherein one end of the transmission mechanism is connected with the driving motor, the other end of the transmission mechanism is connected with the piston push rod, the driving motor is used for driving the piston push rod to do linear motion, the braking device is characterized by further comprising the braking assembly according to any one of claims 6 to 8, the braking assembly is arranged in the transmission mechanism or between the transmission mechanism and the piston push rod or between one of action parts and the transmission mechanism, and the braking assembly and the driving motor are used for taking electricity at the same position or at a power supply.
10. The brake assembly for realizing the power-off brake function according to claim 9, further comprising a mounting bracket, wherein the transmission mechanism comprises a cam and a driven part, the cam is fixed on a rotating shaft, the rotating shaft is movably mounted on the mounting bracket, the driven part is matched with the cam and forms a cam mechanism, the rotating shaft is connected with the driving motor, the driven part is connected with the piston push rod, and one end of the mounting bracket is provided with a connector for connecting a brake master cylinder;
the brake assembly is arranged between the piston push rod and the driven part, and the movable part and the fixed part are respectively connected with the piston push rod and the driven part through connecting parts; or a guide part in the brake assembly is fixed on the mounting frame, the movable part or the fixed part is connected with the rotating shaft through a connecting mechanism, and the brake assembly is used for driving the piston push rod to linearly move along the central axis direction of the piston push rod when the power is off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010136989.4A CN111169442A (en) | 2020-03-02 | 2020-03-02 | Brake assembly and brake device for realizing power-off brake function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010136989.4A CN111169442A (en) | 2020-03-02 | 2020-03-02 | Brake assembly and brake device for realizing power-off brake function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111169442A true CN111169442A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010136989.4A Pending CN111169442A (en) | 2020-03-02 | 2020-03-02 | Brake assembly and brake device for realizing power-off brake function |
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| Country | Link |
|---|---|
| CN (1) | CN111169442A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111634272A (en) * | 2020-06-28 | 2020-09-08 | 江苏飞梭智行设备有限公司 | Braking device and braking system for vehicle and vehicle |
-
2020
- 2020-03-02 CN CN202010136989.4A patent/CN111169442A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111634272A (en) * | 2020-06-28 | 2020-09-08 | 江苏飞梭智行设备有限公司 | Braking device and braking system for vehicle and vehicle |
| CN111634272B (en) * | 2020-06-28 | 2024-01-26 | 江苏飞梭智行设备有限公司 | Braking device for vehicle, braking system and vehicle |
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