A brake assembly and a brake device for realizing a power-off brake function

Abstract

The present invention relates to a brake assembly and a brake device for realizing a power-off braking function, comprising two action parts, wherein the two action parts are used to be connected as a whole when power is on and to generate pre-pressure between the two action parts, and to release the pre-pressure when power is off and drive the two action parts to separate from each other; the brake assembly is small in size and compact in structure, and is easy to integrate, install and disassemble, and can realize the power-off automatic braking function, and the power of the power-off braking comes from the pre-pressure generated when the two action parts are connected together, and no additional motor is required for driving, so that the entire brake device or brake system only needs one motor to realize the braking and power-off automatic braking functions, which is conducive to simplifying the entire brake device and brake system and reducing costs. In addition, the brake assembly is conducive to building an automatic control braking system, which is particularly suitable for vehicles in personal rapid transportation systems.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit equipment, and in particular to a brake assembly and a brake device for realizing a power-off braking function. Background Art

[0002] The braking system is one of the important components of a vehicle, and is mainly used to provide deceleration and braking for the vehicle. The commonly used braking system in the prior art usually includes a braking device (or energy supply device), a control device, a transmission device and a brake, wherein the braking device includes various components for supplying and adjusting the energy required for braking and improving the state of the energy transmission medium; the control device includes various components for generating braking action and controlling the braking effect, such as the vacuum booster pump commonly used in the prior art; the transmission device includes various components for transmitting braking energy to the brake, such as the brake master cylinder commonly used in the prior art (such as the auxiliary Figure 1 As shown); the brake includes a component that generates a force (braking force) that hinders the movement or movement tendency of the vehicle, such as a brake drum, a disc brake, a fixed caliper disc brake, and a floating caliper disc brake commonly used in the prior art.

[0003] Existing braking systems usually require electricity to work properly. However, existing braking systems usually cannot achieve automatic braking functions in the event of a power outage. This is especially true for trains and EMUs that rely on electricity, as well as vehicles used in personal rapid transportation systems. There are major safety issues that need to be improved urgently. Summary of the invention

[0004] The purpose of the present invention is to improve the deficiencies in the prior art and to provide a brake assembly with a small size and compact structure. The brake assembly is arranged in a brake device and can realize the function of automatic braking when power is off, thereby effectively improving safety and being conducive to building an automatic control braking system, which is particularly suitable for vehicles in personal rapid transportation systems.

[0005] The technical solution adopted by the present invention is:

[0006] A brake assembly for realizing a power-off brake function comprises two actuating parts, wherein the two actuating parts are connected as a whole when power is on and generate a pre-pressure between the two actuating parts, and are used to release the pre-pressure when power is off and drive the two actuating parts to separate from each other. The brake assembly provided by the present solution can be arranged in the transmission mechanism of the existing brake device or brake system, and draws power from the power supply line or power supply of the brake device or brake system. On the one hand, the two action parts can be firmly connected together when the power is on, and pre-pressure can be generated for synchronous action, so that the brake device or brake system can be normally transmitted; on the other hand, it can detect whether the brake device or system is powered off. When the automatic device or system is powered off, the constraint disappears, the pre-pressure is automatically released, and the two action parts are driven to separate, that is, the two action parts move relative to each other, so as to achieve the function of power-off transmission, thereby promoting the piston sleeve in the master brake cylinder to move, and then changing the pressure of the brake oil in the master brake cylinder to achieve the purpose of automatic braking (brake); with such a structural design, the power of the power-off brake comes from the pre-pressure generated when the two action parts are connected together, and no additional motor is required for driving, so that the entire brake device or brake system only needs one motor to realize the braking and power-off automatic braking functions, which is conducive to simplifying the entire brake device and brake system and reducing costs.

[0007] To ensure that the action component moves in a straight line under the drive of the pre-pressure after power failure, a guide portion is further included, and the guide portion is used to guide the separation process of the action component. It is ensured that in the case of power failure, one action component can move in a straight line relative to another action component, thereby linearly pushing the piston sleeve in the master brake cylinder to move, thereby achieving the purpose of automatic braking.

[0008] In order to generate the pre-pressure, a brake spring is further included, and the brake spring is arranged between the two action parts to generate the pre-pressure. That is, the brake spring is arranged between the two action parts. When there is electricity, the two action parts are connected as a whole, and the brake spring is in a compressed state, thereby generating pre-pressure. When the power is off, the constraint between the two action parts disappears, and the brake spring can be freely extended, so that the pre-pressure can be automatically generated to achieve the purpose of automatic braking.

[0009] In order to enable the two action parts to be connected as one when there is electricity, preferably, at least one of the action parts is an electromagnet, and the electromagnet is used to generate an adsorption force when electricity is turned on and enable the two action parts to be connected as one;

[0010] Or, at least one of the action parts is provided with an electromagnet, which is used to generate an adsorption force when powered on and connect the two action parts into one. The electromagnet can generate a strong magnetic force when powered on, so that the two action parts are firmly adsorbed into one, and the brake spring is kept in a compressed state to generate pre-pressure. When the power is off, the magnetic force of the electromagnet disappears, the pre-pressure can be released, and under the elastic force of the brake spring, one action part can move relative to the other action part and push the piston sleeve in the master brake cylinder to move, thereby achieving the purpose of automatic braking.

[0011] In order to facilitate the installation or integration of the brake assembly into the brake device or brake system, further, at least one of the action components is provided with a connection portion for connecting the transmission component, and the connection portion is a connection hole provided with an internal thread, or a connection column provided with an external thread. By providing the connection portion, the brake assembly can be conveniently installed and integrated into the existing brake device and brake system, so as to realize the automatic braking function when the power is cut off.

[0012] In one solution, the two action parts are a movable part and a fixed part, wherein the fixed part includes an electromagnet, and the movable part is made of iron material or is provided with an adsorption plate made of iron material.

[0013] The guide part is provided with a guide hole, the movable part and the fixed part are respectively arranged in the guide hole, and a blocking part is arranged at one end of the guide hole, 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,

[0014] The connecting part is arranged on the movable part and / or the fixed part. The brake assembly provided by the present solution can be installed and integrated into the middle or one end of the transmission mechanism of the existing brake device or system, which is very flexible, convenient and practical; and the movable part and the fixed part are arranged in the guide holes respectively, which can not only guide the movement of the movable part and the fixed part by using the guide holes, but also make the structure of the whole assembly more small and compact, and is particularly suitable for use in vehicles in personal rapid transportation systems.

[0015] In another embodiment, the two action parts are respectively a movable part and a fixed part, wherein the movable part includes a support body, one side of which is provided with a piston push rod or a connecting part for connecting the piston push rod, and the fixed part includes a base, one side of which is provided with a driven part for transmission, or a connecting part for connecting the driven part.

[0016] The guide portion includes a first guide portion disposed on the other side of the support body and a second guide portion disposed on the other side of the base, wherein the first guide portion and the second guide portion form a moving pair.

[0017] The brake spring is arranged between the support body and the base.

[0018] The support body and / or the base is an electromagnet, or the support body and / or the base are respectively provided with an electromagnet, and the electromagnet is used to make the support body and the base adsorbed as one in a power-on state and to make the brake spring in a compressed state. The brake assembly provided by the present invention can be installed and integrated into the middle of the transmission mechanism of the existing brake device or system due to the internal guidance. The piston push rod is adapted to the 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 using the driven part. When the brake device is working normally, the electromagnet draws power from the line or power supply that supplies power to the brake device or brake system. On the one hand, the electromagnet can generate an adsorption force so that the movable part and the fixed part are firmly adsorbed together and form a whole so as to act synchronously, so that the braking force can be transmitted according to the braking demand, thereby achieving the purpose of braking. On the other hand, it can detect whether the brake device is powered off. When the automatic device is powered off, the adsorption force on the electromagnet disappears, the elastic force of the brake spring is released, and the movable part is driven to move relative to the fixed part and separate from the fixed part, and at the same time, the piston sleeve in the brake master cylinder is pushed to act, thereby changing the pressure of the brake oil in the brake master cylinder, thereby achieving the purpose of automatic braking (brake).

[0019] 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 this solution, the sleeve and the guide rod form a moving pair, which can achieve a good guiding function and ensure that in the case of power failure, the movable part can move linearly relative to the fixed part, thereby linearly pushing the piston sleeve in the master brake cylinder to move, thereby achieving the purpose of automatic braking.

[0020] A braking device includes a driving motor, a transmission mechanism, and a piston push rod adapted to a piston sleeve in a master brake cylinder, wherein one end of the transmission mechanism is connected to the driving motor, and the other end is connected to the piston push rod, and the driving motor is used to drive the piston push rod to perform linear motion. The device also includes a brake assembly, which is arranged in the transmission mechanism, or between the transmission mechanism and the piston push rod, or one of the actuating parts is connected to the transmission mechanism, and the brake assembly and the driving motor are powered at the same position or power source. In the present solution, along the transmission direction from the drive motor and the transmission mechanism to the piston push rod, the brake assembly can be installed inside the transmission mechanism to realize the automatic braking function, or can be installed between the transmission mechanism and the piston push rod to realize the automatic braking function. It can also be set separately and connected to the transmission mechanism through an action component, so that the automatic braking function can be realized, so that the structure of the present brake device is diverse and meets the needs of different occasions; and the brake assembly and the drive motor are powered at the same position or power source, which can not only power the brake assembly, but also use the brake assembly to monitor in real time whether the brake device is powered off. When the power off is detected, the pre-pressure can be automatically released to achieve the purpose of automatic braking.

[0021] Preferably, it further comprises a mounting frame, the transmission mechanism comprises a cam and a driven part, the cam is fixed to a rotating shaft, the rotating shaft is movably mounted on the mounting frame, the driven part is adapted to the cam, and a cam mechanism is formed, the rotating shaft is connected to the driving motor, the driven part is connected to the piston push rod, and one end of the mounting frame is provided with a connector for connecting to a brake master cylinder;

[0022] 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 to the piston push rod and the driven part through a connecting part, or the guide part in the brake assembly is fixed to the mounting frame, and the movable part or the fixed part is connected to the rotating shaft through a connecting mechanism. The brake assembly is used to drive the piston push rod to move linearly along its central axis when the power is off. In the present solution, a cam mechanism is formed by a driven part and a cam, and a driving motor is used to control the rotation speed of the cam, so that when the driving motor rotates forward or reversely, the rotational power of the motor output shaft can be converted into power for pushing the piston push rod to move linearly along its own central axis through the cam mechanism, and transmitted to the piston push rod. One end of the piston push rod is sleeved in the piston sleeve. When the piston push rod moves, it squeezes the piston sleeve, thereby pushing the piston sleeve in the master brake cylinder to move, thereby changing the pressure of the brake oil in the master brake cylinder to achieve the purpose of braking; adopting such a structural design, by reasonably controlling the rotation speed of the driving motor, the piston push rod can be driven to move at a set speed, thereby conveniently realizing the linear braking function, which can effectively avoid the problems of easy occurrence of empty stroke and short braking stroke in the prior art, and is more conducive to achieving smooth braking. After the brake assembly is integrated into the brake device, the brake device can realize the automatic braking function when the power is off, which is conducive to improving safety. In addition, the brake device has a compact structure and a small size, which can effectively save installation space, and is particularly suitable for vehicles in personal rapid transportation systems.

[0023] Compared with the prior art, the brake assembly and brake device provided by the present invention for realizing the power-off brake function have the following beneficial effects:

[0024] 1. This brake assembly is small in size and compact in structure, easy to integrate, install and disassemble, and can realize the automatic braking function when the power is off, thereby effectively improving safety and being conducive to building an automatic control braking system, especially suitable for vehicles in personal rapid transportation systems.

[0025] 2. In this brake assembly, the power for power-off braking comes from the pre-pressure generated when two moving parts are connected together, and no additional motor is required for driving. As a result, the entire brake device or brake system only needs one motor to achieve the braking and power-off automatic braking functions, which is conducive to simplifying the entire brake device and brake system and reducing costs.

[0026] 3. This braking device can not only realize the automatic braking function when the power is off, but also realize linear braking, thereby effectively avoiding the problems of empty travel and short braking travel existing in the prior art, and is more conducive to achieving smooth braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 This is one of the structural schematic diagrams of a brake assembly provided in Example 1 of the present invention.

[0029] Figure 2 This is the second structural schematic diagram of a brake assembly provided in Example 1 of the present invention.

[0030] Figure 3 for Figure 1 sectional view of .

[0031] Figure 4 It is a structural schematic diagram of an existing brake master cylinder.

[0032] Figure 5 This is a cross-sectional view of a braking device provided in Example 2 of the present invention.

[0033] Figure 6 This is a schematic diagram of the structure of a cam in a braking device provided in Example 2 of the present invention.

[0034] Figure 7 This is a cross-sectional view of a braking device provided in Example 2 of the present invention after being installed on a master brake cylinder.

[0035] Figure 8 This is a cross-sectional view of a braking device provided in Example 4 of the present invention.

[0036] Fig. 9 This is a cross-sectional view of another braking device provided in Example 4 of the present invention.

[0037] Description of symbols in the figure

[0038] Master brake cylinder 100, piston sleeve 101,

[0039] Driving motor 201, reducer 202, rotating shaft 203, cam 204, mounting bracket 205, connector 206, connecting hole 207, return spring 209, contour surface 210, shaft hole 211, rotating part 212, swing rod 213, fisheye bearing 214,

[0040] The movable part 300, the support body 301, the piston push rod 302, the first guide part 303,

[0041] The fixing member 400, the base 401, the second guide portion 402, the bolt 404,

[0042] Electromagnet 500,

[0043] Brake spring 600,

[0044] The guide portion 700, the guide hole 701, the blocking portion 702,

[0045] Connecting part 800,

[0046] Transmission chain 901 and sprocket 902 . DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0048] Example 1

[0049] See also Figure 1-Figure 3In this embodiment, a brake assembly for realizing a power-off brake function is provided, including two actuating components, wherein the two actuating components are used to be connected as a whole when power is supplied and to generate a pre-pressure between the two actuating components, and to release the pre-pressure when power is supplied and drive the two actuating components to separate from each other. The brake assembly provided in this embodiment can be arranged in the transmission mechanism of the existing brake device or brake system, and draws power from the power supply line or power supply of the brake device or brake system. On the one hand, the two action parts can be firmly connected together when the power is on, and pre-pressure can be generated for synchronous action, so that the brake device or brake system can be normally transmitted; on the other hand, it can detect whether the brake device or system is powered off. When the automatic device or system is powered off, the constraint disappears, the pre-pressure is automatically released, and the two action parts are driven to separate, that is, the two action parts move relative to each other, so as to achieve the function of power-off transmission, thereby promoting the piston sleeve 101 in the master brake cylinder 100 to move, and then changing the pressure of the brake oil in the master brake cylinder 100, so as to achieve the purpose of automatic braking (brake); with such a structural design, the power of the power-off brake comes from the pre-pressure generated when the two action parts are connected together, and no additional motor is required for driving, so that the entire brake device or brake system only needs one motor to realize the braking and power-off automatic braking functions, which is conducive to simplifying the entire brake device and brake system and reducing costs.

[0050] In order to ensure that the action parts move in a straight line under the drive of the pre-pressure after power failure, the brake assembly further includes a guide part 700, which is used to guide the separation process of the action parts. It is ensured that in the case of power failure, one action part can move in a straight line relative to another action part, thereby linearly pushing the piston sleeve 101 in the master brake cylinder 100 to move, thereby achieving the purpose of automatic braking.

[0051] In order to generate the pre-pressure, the brake assembly further includes a brake spring 600, which is arranged between the two action parts and is used to generate the pre-pressure. That is, the brake spring 600 is arranged between the two action parts. When there is electricity, the two action parts are connected as a whole, and the brake spring 600 is in a compressed state, thereby generating pre-pressure. When the power is off, the constraint between the two action parts disappears, and the brake spring 600 can be freely extended, so that the pre-pressure can be automatically generated, thereby achieving the purpose of automatic braking.

[0052] In order to make the two action parts connected as one when powered, in the brake assembly, at least one of the action parts is an electromagnet 500, and the electromagnet 500 is used to generate an adsorption force when powered and make the two action parts connected as one;

[0053] Or, at least one of the action parts is provided with an electromagnet 500, which is used to generate an adsorption force when powered on and connect the two action parts into one. The electromagnet 500 can generate a strong magnetic force when powered on, so that the two action parts are firmly adsorbed into one, and the brake spring 600 is kept in a compressed state to generate pre-pressure. When the power is off, the magnetic force of the electromagnet 500 disappears, and the pre-pressure can be released. Under the elastic force of the brake spring 600, one action part can move relative to the other action part and push the piston sleeve 101 in the master brake cylinder 100 to move, thereby achieving the purpose of automatic braking.

[0054] In order to facilitate the installation or integration of the brake assembly into a brake device or a brake system, in the brake assembly, at least one of the action components is provided with a connection portion 800 for connecting to a transmission component, and the connection portion 800 is a connection hole 207 provided with an internal thread, or a connection column provided with an external thread. By providing the connection portion 800, the brake assembly can be conveniently installed and integrated into an existing brake device and a brake system, so as to realize the automatic braking function when power is cut off.

[0055] As an example, in this embodiment, the two action parts in the brake assembly are respectively a movable part 300 and a fixed part 400. Figure 1-Figure 3As shown, the movable component 300 includes a support body 301, one side of the support 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 part for transmission, or, is provided with a connecting portion 800 for connecting the driven part, the guide portion 700 includes a first guide portion 303 provided on the other side of the support body 301 and a first guide portion 304 provided on the other side of the base 401. Two guide parts 402, the first guide part 303 and the second guide part 402 constitute a moving pair, the brake spring 600 is arranged between the support body 301 and the base 401, the support 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 to make the support body 301 and the base 401 adsorbed as one when powered on, and to make the brake spring 600 in a compressed state. The brake assembly provided by the present invention can be installed and integrated into the middle of the transmission mechanism of the existing brake device or system due to the internal guidance. The piston push rod 302 is adapted to the piston sleeve 101 in the existing brake master cylinder 100 so as to be inserted into the piston sleeve 101. The brake assembly can be conveniently installed in the brake device by using the driven part. When the brake device is working normally, the electromagnet 500 draws power from the line or power supply that supplies power to the brake device or brake system. On the one hand, the electromagnet 500 can generate an adsorption force, so that the movable part 300 and the fixed part 400 are firmly fixed. They are adsorbed together and form a whole for synchronous action, so that the braking force can be transmitted according to the braking demand, thereby achieving the purpose of braking. On the other hand, it can detect whether the braking device is powered off. When the automatic device is powered off, the adsorption force on the electromagnet 500 disappears, and the elastic force of the brake spring 600 is released, driving the movable part 300 to move relative to the fixed part 400 and separate from the fixed part 400, and at the same time pushing the piston sleeve 101 in the master brake cylinder 100 to move, thereby changing the pressure of the brake oil in the master brake cylinder 100, and achieving the purpose of automatic braking (braking).

[0056] In this embodiment, the support body 301 and the base 401 mainly play a supporting role, and the shape can be determined according to actual needs. For example, in this embodiment, the support body 301 adopts a disc-shaped structure, and the base 401 adopts a U-shaped structure. Figure 1-Figure 3 As shown, the adsorption portion is fixed to the base 401 by bolts 404 .

[0057] like Figure 3As shown, in this 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 the central through hole of the electromagnet 500. So that the structure of the movable part 300 and the fixed part 400 after being adsorbed together is more compact and regular, and is easier to integrate and install. The electromagnet 500 is connected to the terminal or power supply for powering the brake device through a wire to synchronously monitor whether the power is off; as an implementation method, Figure 3 As shown, the electromagnet 500 is arranged on the base 401, and the support body 301 is made of iron material, or the support body 301 is provided with an adsorption plate made of iron material, so as to cooperate with the adsorption part, so that the movable part 300 and the fixed part 400 are firmly adsorbed into one body in the state of electricity, as shown in FIG. Figure 1-Figure 3 As shown, 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 brake cylinder 100 to move, thereby achieving the purpose of automatic braking.

[0058] To ensure that the movable part 300 moves linearly relative to the fixed part 400 after power failure, preferably, the first guide part 303 is a sleeve, and the second guide part 402 is a guide rod matched with the sleeve, so as to form a moving pair; or, the first guide part 303 is a guide rod, and the second guide part 402 is a sleeve matched with the guide rod, such as Figure 1-Figure 3 As shown; the sleeve and the guide rod are used to form a moving pair, which can achieve a good guiding function and ensure that in the event of a power outage, the movable component 300 can move linearly relative to the fixed component 400, thereby linearly pushing the piston sleeve 101 in the master brake cylinder 100 to move, thereby achieving the purpose of automatic braking.

[0059] Example 2

[0060] This embodiment provides a braking device, including a driving motor 201, a transmission mechanism, and a piston push rod 302 adapted to a piston sleeve 101 in a brake master cylinder 100 (the existing brake master cylinder 100 is as shown in FIG. Figure 4 As shown in the figure, 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 move linearly; it also includes the brake assembly described in Example 1, and the brake assembly is arranged in the transmission mechanism, or between the transmission mechanism and the piston push rod 302, as shown in the figure. Figure 5-Figure 7As shown, the brake assembly and the drive motor 201 are powered at the same position or power source. In this solution, along the transmission direction from the drive motor 201 and the transmission mechanism to the piston push rod 302, the brake assembly can be installed inside the transmission mechanism to realize the automatic braking function, or installed between the transmission mechanism and the piston push rod 302 to realize the automatic braking function. It can also be set separately and connected to the transmission mechanism through an action component, so that the automatic braking function can be realized, making the structure of the brake device diverse and meeting the needs of different occasions; and the brake assembly and the drive motor 201 are powered at the same position or power source, which can not only realize the power supply to the brake assembly, but also use the brake assembly to monitor in real time whether the brake device is powered off. When the power off is detected, the pre-pressure can be automatically released to achieve the purpose of automatic braking.

[0061] Preferably, the present braking device further comprises a mounting frame 205, the transmission mechanism comprises a cam 204 and a driven part, the cam 204 is fixed to the rotating shaft 203, the rotating shaft 203 is movably mounted on the mounting frame 205, the driven part is adapted to the cam 204, and constitutes a cam 204 mechanism, the rotating shaft 203 is connected to the driving motor 201, the driven part is connected to the piston push rod 302, and one end of the mounting frame 205 is provided with a connector 206 for connecting to the master brake cylinder; the braking assembly is arranged between the piston push rod 302 and the driven part, and the movable part 300 and the fixed part 400 are respectively connected to the piston push rod 302 and the driven part through the connecting part 800, as shown in FIG. Figure 5-Figure 7 In this solution, the driven part and the cam 204 form a cam 204 mechanism, and the driving motor 201 is used to control the rotation speed of the cam 204, so that when the driving motor 201 rotates forward or reversely, the cam 204 mechanism can convert the rotational power of the motor output shaft into power to push the piston push rod 302 to move linearly along its own central axis, and transmit it to the piston push rod 302. One end of the piston push rod 302 is sleeved in the piston sleeve 101. When the piston push rod 302 moves, it squeezes the piston sleeve 101, thereby pushing the piston sleeve 101 in the brake master cylinder 100 to move, thereby changing the brake in the brake master cylinder 100. The pressure of the dynamic oil is used to achieve the purpose of braking; by adopting such a structural design, the rotation speed of the driving motor 201 can be reasonably controlled, so that the piston push rod 302 can be driven to move at the set speed, thereby conveniently realizing the linear braking function, which can effectively avoid the problems of easy empty stroke and short braking stroke in the prior art, and is more conducive to achieving smooth braking. After the brake assembly is integrated into the brake device, the brake device can realize the function of automatic braking when the power is off, which is beneficial to improve safety. In addition, the brake device has a compact structure and a small size, which can effectively save installation space and is particularly suitable for vehicles in personal rapid transportation systems.

[0062] It can be understood that the driven part has multiple implementations. As an example, the driven part includes a driven rod fixed to the base 401, and the driven rod and the cam 204 form a cam 204 mechanism to transmit and control power; and in a further solution, a rotating component 212 is further provided at the end of the driven rod, and the rotating component 212 can be a bearing or a roller to achieve rolling contact with the cam 204 to reduce wear;

[0063] like Figure 5 and Figure 7 As shown, as another example, the driven part includes a swing rod 213, and 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, and the other end is hinged to the mounting frame 205. The rotating component 212 contacts the cam 204 and constitutes a cam 204 mechanism. The rotating component 212 can be a bearing or a roller; using the rotating component 212 to contact the cam 204, rolling contact can be achieved, which can reduce wear and increase service life, and is conducive to achieving a smoother braking process; and using the swing of the swing rod 213 for transmission is conducive to achieving a smoother braking process; it can be understood that the swing rod 213 can be a straight rod or a bent rod. As an example, the swing rod 213 adopts an L-shaped bent rod, such as Figure 5 and Figure 7 As shown, the rotating component 212 can be set at the corner with the swing rod 213, and the swing rod 213 can be hinged with the base 401 through the fisheye bearing 214, and the fisheye bearing 214 can be conveniently installed on the connecting part 800 of the base 401.

[0064] like Figure 6 As shown, in this embodiment, the cam 204 is provided with an axial hole 211 for connecting the rotating shaft 203, and the surface of the cam 204 for contacting the driven rod or the rotating component 212 is a contour surface 210. Along the circumferential direction of the cam 204, the distance between the contour surface 210 and the center point of the cam 204 gradually increases, so as to drive the piston push rod 302 to move at a uniform speed or uniform acceleration, thereby realizing a linear braking function, which is beneficial to solving the problems of short idle stroke and braking stroke, thereby facilitating smooth braking.

[0065] like Figure 5 and Figure 7As shown, in this embodiment, the brake device further includes a return spring 209, which is arranged on the outside of the piston push rod 302, one end of the return spring 209 is fixed to the support body 301, and the other end is fixed to the mounting frame 205, and the return spring 209 is used to provide a restoring force for the brake assembly to ensure that the driven part is in contact with the cam 204. So that the driven part is in close contact with the cam 204 and moves synchronously, and prevents the occurrence of an idle stroke during the braking process.

[0066] In a more complete solution, Figure 5 and Figure 7 As shown, the connecting head 206 is a cylindrical structure, and the end of the connecting head 206 is provided with a connecting hole 207 adapted to the brake master cylinder, so as to achieve fixation and connection by means of bolts 404; this facilitates both the reliable connection between the brake device and the brake master cylinder and the assembly and disassembly of the brake device.

[0067] In a more perfect solution, the braking device further includes a reducer 202, which is fixed to the mounting frame 205 and connected to the driving motor 201 and the rotating shaft 203, respectively. Figure 5 and Figure 7 As shown, the reducer 202 is arranged between the driving motor 201 and the cam 204, and plays the function of reducing the rotation speed and increasing the torque, thereby effectively improving the braking force and meeting the requirements of different braking force sizes.

[0068] Example 3

[0069] Based on the embodiment 1, the embodiment 3 provides another structure of the brake assembly, such as Figure 8 and Fig. 9 As shown, the two action parts are respectively a movable part 300 and a fixed part 400, wherein the fixed part 400 includes an electromagnet 500, and the movable part 300 is made of iron material or is provided with an adsorption plate made of iron material.

[0070] The guide portion 700 is provided with a guide hole 701, the movable component 300 and the fixed component 400 are respectively arranged in the guide hole 701, and a blocking portion 702 is provided at one end of the guide hole 701, the brake spring 600 is arranged between the movable component 300 and the fixed component 400, and the movable component 300 and the fixed component 400 respectively form a moving pair with the guide hole 701,

[0071] The connecting portion 800 is arranged on the movable component 300 and / or the fixed component 400. The brake assembly provided by the present solution can be installed and integrated into the middle or one end of the transmission mechanism of the existing brake device or system, which is very flexible, convenient and practical; and the movable component 300 and the fixed component 400 are respectively arranged in the guide hole 701, which can not only guide the movement of the movable component 300 and the fixed component 400 by using the guide hole 701, but also facilitate the structure of the entire assembly to be more small and compact, and is particularly suitable for use in vehicles in personal rapid transportation systems.

[0072] As an example, Figure 8 and Fig. 9 As shown, the fixed component 400 is an electromagnet 500, the guide portion 700 is a cylindrical structure, a guide hole 701 is arranged inside, a blocking portion 702 is arranged at one end (or the upper end), the fixed component 400 and the movable component 300 are respectively arranged in the guide hole 701, a brake spring 600 is arranged between the fixed component 400 and the movable component 300, and the movable component 300 is provided with a connecting portion 800 for connecting a braking device or system.

[0073] Since in this embodiment, the movable component 300 and the fixed component 400 are respectively arranged in the guide part 700, compared with the brake assembly provided in Example 1, this brake assembly can be arranged not only in the moving mechanism of the brake device, but also between the transmission mechanism and the piston push rod 302, such as Figure 8 and Fig. 9 As shown, in these two cases, it is only necessary to set a connecting part 800 on the fixed part 400 and the movable part 300 respectively so as to install them into the braking device. In addition, the brake assembly can also connect one or one of the moving parts with the transmission mechanism. In this case, it is only necessary to set a connecting part 800 on the fixed part 400 or the movable part 300 to achieve connection with the transmission structure, and the automatic braking function can also be realized.

[0074] Example 4

[0075] This embodiment provides a braking device, including a drive motor 201, a transmission mechanism, and a piston push rod 302 adapted to the piston sleeve 101 in the master brake cylinder 100, one end of the transmission mechanism is connected to the drive motor 201, and the other end is connected to the piston push rod 302, and the drive motor 201 is used to drive the piston push rod 302 to move linearly; it also includes the brake assembly described in Example 3, the brake assembly is arranged in the transmission mechanism, or is arranged between the transmission mechanism and the piston push rod 302, or one of the moving parts is connected to the transmission mechanism, and the brake assembly and the drive motor 201 are powered at the same position or power source. In the present solution, along the transmission direction from the drive motor 201 and the transmission mechanism to the piston push rod 302, the brake assembly can be installed inside the transmission mechanism to realize the automatic braking function, or can be installed between the transmission mechanism and the piston push rod 302 to realize the automatic braking function. It can also be set separately and connected to the transmission mechanism through an action component, so that the automatic braking function can be realized, so that the structure of the present brake device is diverse and meets the needs of different occasions; and the brake assembly and the drive motor 201 are powered at the same position or power source, which can not only power the brake assembly, but also use the brake assembly to monitor in real time whether the brake device is powered off. When the power off is detected, the pre-pressure can be automatically released to achieve the purpose of automatic braking.

[0076] Preferably, the present braking device further comprises a mounting frame 205, wherein the transmission mechanism comprises a cam 204 and a driven part, wherein the cam 204 is fixed to the rotating shaft 203, wherein the rotating shaft 203 is movably mounted on the mounting frame 205, wherein the driven part matches the cam 204 and constitutes a cam 204 mechanism, wherein the rotating shaft 203 is connected to the driving motor 201, wherein the driven part is connected to the piston push rod 302, and wherein one end of the mounting frame 205 is provided with a connector 206 for connecting to a master brake cylinder; wherein the braking assembly is arranged between the piston push rod 302 and the driven part, and wherein the movable part 300 and the fixed part 400 are respectively connected to the piston push rod 302 and the driven part through the connecting part 800, or wherein the guide part 700 in the braking assembly is fixed to the mounting frame 205, wherein the movable part 300 or the fixed part 400 is connected to the rotating shaft 203 through a connecting mechanism, and wherein the braking assembly is used to drive the piston push rod 302 to move linearly along the central axis direction thereof when power is off, such as Figure 8 and Fig. 9In this solution, the driven part and the cam 204 form a cam 204 mechanism, and the driving motor 201 is used to control the rotation speed of the cam 204, so that when the driving motor 201 rotates forward or reversely, the cam 204 mechanism can convert the rotational power of the motor output shaft into power to push the piston push rod 302 to move linearly along its own central axis, and transmit it to the piston push rod 302. One end of the piston push rod 302 is sleeved in the piston sleeve 101. When the piston push rod 302 moves, it squeezes the piston sleeve 101, thereby pushing the piston sleeve 101 in the brake master cylinder 100 to move, thereby changing the brake in the brake master cylinder 100. The pressure of the dynamic oil is used to achieve the purpose of braking; by adopting such a structural design, the rotation speed of the driving motor 201 can be reasonably controlled, so that the piston push rod 302 can be driven to move at the set speed, thereby conveniently realizing the linear braking function, which can effectively avoid the problems of easy empty stroke and short braking stroke in the prior art, and is more conducive to achieving smooth braking. After the brake assembly is integrated into the brake device, the brake device can realize the function of automatic braking when the power is off, which is beneficial to improve safety. In addition, the brake device has a compact structure and a small size, which can effectively save installation space and is particularly suitable for vehicles in personal rapid transportation systems.

[0077] As an example, Figure 8 and Fig. 9 As shown, the movable component 300 and the fixed component 400 are respectively provided with a connecting portion 800, so that the brake assembly can be arranged between the piston push rod 302 and the driven portion, the guide portion 700 can be fixed to the mounting frame 205, the movable component 300 and the fixed component 400 are respectively connected to the piston push rod 302 and the driven portion, and the power of the driving motor 201 can be transmitted when there is electricity to realize the braking function, and the piston push rod 302 can be driven to move by releasing the pre-pressure when the power is off, thereby achieving the function of automatic braking.

[0078] As an example, Figure 8 and Fig. 9As shown, an action component in the brake assembly provided in Example 3 is connected to the transmission mechanism to realize the automatic braking function. As shown in the figure, the guide part 700 in the brake assembly is fixed to the mounting frame 205, and the movable component 300 is connected to the rotating shaft 203 through a connecting mechanism. The connecting mechanism adopts a chain transmission mechanism. As shown in the figure, the rotating shaft 203 is equipped with a sprocket 902, one end of the transmission chain 901 is connected to the movable component 300, and the other end bypasses the sprocket 902. The cam 204 rotates synchronously with the sprocket 902. When there is electricity, the braking function can be realized when the cam 204 rotates clockwise. At this time, the movable component 300 is connected to the fixed component 400 as a whole, which will not interfere with normal braking; when the power is off, the pre-pressure is released, driving the movable component 300 to separate from the fixed component 400, so that the movable component 300 moves downward and drives the sprocket 902 to rotate clockwise through the transmission chain 901, thereby synchronously driving the cam 204 to rotate clockwise to achieve the purpose of automatic braking.

[0079] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A braking device, characterized in that: It includes a driving motor, a transmission mechanism, a mounting frame, a brake assembly, and a piston push rod adapted to a piston sleeve in a brake master cylinder, wherein: One end of the mounting frame is provided with a connector for connecting to a brake master cylinder; One end of the transmission mechanism is connected to the driving motor, and the other end is connected to the piston push rod, and the driving motor is used to drive the piston push rod to move linearly; The brake assembly is arranged in the transmission mechanism, and the brake assembly and the drive motor are powered at the same position or power source; The transmission mechanism includes a cam and a driven part, the cam is fixed to the 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, and the rotating shaft is connected to the driving motor; The brake assembly is arranged between the piston push rod and the driven part, and is used to drive the piston push rod to move linearly along the central axis direction when the power is off; The brake assembly includes a brake spring, a guide portion and two action components, the two action components are used to be connected as a whole when powered on and to generate a pre-pressure between the two action components, and to release the pre-pressure when powered off and drive the two action components to separate from each other; The two action parts are respectively a movable part and a fixed part, wherein the movable part includes a support body, one side of which is connected to the piston push rod; the fixed part includes a base, one side of which is connected to the driven part; the guide part includes 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, and the first guide part and the second guide part constitute a moving pair; the brake spring is arranged between the support body and the base; the support body or the base includes an electromagnet, and the electromagnet is used to make the support body and the base adsorbed as one when powered on, and to make the brake spring in a compressed state to generate pre-pressure; when the power is off, the elastic force of the brake spring is released, driving the movable part to move relative to the fixed part, and pushing the piston sleeve in the master brake cylinder to move, thereby changing the pressure of the brake oil in the master brake cylinder to achieve automatic braking.

2. The braking device according to claim 1, characterized in that: A connecting portion for connecting the piston push rod is arranged on one side of the supporting body.

3. The braking device according to claim 1, characterized in that: A connecting portion for connecting the driven portion is arranged on one side of the base.

4. The braking device according to claim 2 or 3, characterized in that: The connecting portion is a connecting hole provided with an internal thread, or a connecting column provided with an external thread.

5. The braking device according to claim 1, characterized in that: The first guide portion is a sleeve, and the second guide portion is a guide rod matched with the sleeve; Alternatively, the first guide portion is a guide rod, and the second guide portion is a sleeve matched with the guide rod.

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