CN115727074B - Braking device and vehicle - Google Patents

Abstract

The present invention relates to a brake device and a vehicle. The braking device comprises a first braking part, a first driving part and a second driving part, wherein the first braking part is connected with the first driving part. When the moving part is in a first state, such as a running state, if the moving part needs to be braked, the first driving part works to drive the first braking part to move along the X direction, so that the first braking part is pressed on the moving part, and a running braking function is realized. When the parking brake function is required to be executed, that is, the moving part is in a second state such as a braking state, the first driving part does not work, the movement of the first braking part is limited by the second driving part, the parking brake force is maintained, the parking brake function is executed, and the possibility that the first driving part is overheated due to long-time work of the first driving part is reduced. The braking device can simultaneously realize two functions of service braking and parking braking, has high integration level, compact structure and small occupied space, and compared with hydraulic or pneumatic parking, the braking device has faster braking response and better safety.

Description

Brakes and vehicles

technical field

The invention relates to the technical field of braking, in particular to a braking device and a vehicle.

Background technique

In the traditional hydraulic or pneumatic braking system, there are obvious disadvantages such as complex gas-liquid pipeline, difficult maintenance, complex layout structure, slow dynamic response of braking, and low braking comfort performance. For example, in the hydraulic brake system, due to the use of conventional hydraulic brake system components such as the vacuum brake booster, the brake master cylinder, and the oil reservoir with a large volume, it not only has a complex structure and assembly, but also has a large volume, Difficult maintenance, and because the system is equipped with hydraulic brake lines and brake fluids connected to the corresponding components, it is necessary to replace the hydraulic oil regularly and regularly check whether there is a problem of hydraulic oil leakage. The electromechanical braking system stands out because of its simple structure, fast dynamic braking response, and good braking comfort and safety performance.

In related technologies, long-term braking of the motor in the electromechanical braking system will generate high temperature at the position of the motor, which is not conducive to braking safety.

Contents of the invention

Based on this, it is necessary to provide a braking device that solves the problem of low braking reliability in the existing braking system.

A braking device for limiting the movement of moving parts, comprising:

the first brake part;

The first driving part, the first braking part is connected to the first driving part; when the moving part is in the first state, the first driving part is used to drive the first braking part along the first direction, so that the first braking part is pressed against the moving part; the first direction is parallel to the axial direction of the moving part;

The second driving part is spaced apart from the first driving part along the first direction; when the moving part is in the second state, the second driving part is connected to the first braking part to limit the Describe the movement of the first braking unit.

In one of the embodiments, the brake device includes a transmission assembly, and the transmission assembly includes a drive rod and a drive block threadedly connected to the drive rod;

The driving rod is connected to the first driving part, and the first driving part is used to drive the driving rod to rotate around the first direction; the driving rod drives the driving block along the first direction. direction movement; the first braking part is connected to the driving block and can move synchronously with the driving block.

In one of the embodiments, the transmission assembly further includes a guide member, the driving block is slidably connected to the guide member, and the guide member is used to limit the rotation of the driving block.

In one of the embodiments, the braking device includes a transmission rod, and the transmission rod has a fulcrum position, an active position and a driven position; the fulcrum position is rotatably connected to the guide member, and the active position and the The driven position is respectively rotatably connected to the driving block and the first braking part; the driving block drives the first braking part to move through the transmission rod.

In one of the embodiments, the distance between the active position and the fulcrum position is greater than the distance between the slave position and the fulcrum position.

In one of the embodiments, the braking device includes a pushing part that is rotatably connected to the driven position, the pushing part is located between the transmission rod and the first braking part, and the transmission rod passes through The pushing part pushes the first braking part to move.

In one of the embodiments, the second driving part includes an electromagnet, a moving piece and a rotating piece, and the rotating piece is connected to the driving rod;

When the electromagnetic part is in the de-energized state, the moving piece is pressed against the rotating piece to limit the rotation of the driving rod;

When the electromagnet is in an electrified state, the electromagnet drives the moving piece to separate from the rotating piece, so as to release the restriction on the rotation of the driving rod.

In one of the embodiments, the second driving part further includes an elastic member, and the elastic member is connected between the moving piece and the rotating piece;

When the electromagnetic element is in the energized state, the elastic element is in a deformed state;

When the electromagnetic part is in the de-energized state, the elastic part drives the moving piece to press against the rotating piece through its own elastic force.

In one of the embodiments, the brake device further includes a brake body and a second brake part connected to the brake body, the second brake part and the first brake part are respectively located at the Both ends of the moving parts;

The braking body and the second braking portion are configured to operably move in the first direction.

A vehicle includes the brake device as described above.

The above brake device includes a first brake part, a first drive part and a second drive part, and the first brake part is connected to the first drive part. When the moving part is in the first state, such as the driving state, if it needs to be braked, the first driving part works to drive the first braking part to move along the first direction, so that the first braking part is pressed against the moving part components to realize the service braking function. When the parking brake function needs to be performed, that is, the moving part is in the second state, such as a braking state, the first driving part does not work, the movement of the first braking part is restricted by the second driving part, and the parking brake force is maintained. The parking brake function reduces the possibility of overheating of the first drive unit caused by the long-time operation of the first drive unit. The brake device can simultaneously realize the two functions of driving brake and parking brake, with high integration, compact structure, small footprint, and compared with hydraulic or pneumatic parking, the brake response is faster and the safety is better .

Description of drawings

Fig. 1 is a structural schematic diagram of a braking device provided by an embodiment of the present invention;

Fig. 2 is a sectional view of the braking device shown in Fig. 1;

Fig. 3 is a cross-sectional view of a first driving part and a second driving part in the brake device shown in Fig. 2;

Fig. 4 is a sectional view of the transmission rod in the braking device shown in Fig. 2;

Fig. 5 is a structural schematic diagram of a transmission rod in the braking device shown in Fig. 4 .

Reference signs: 10-brake device; 110-first brake part; 120-second brake part; 130-brake main body; 140-brake disc; 210-first drive part; 211-motor housing ; 212-motor stator; 213-motor rotor; 220-second driving part; 221-moving piece; 222-rotating piece; 223-elastic piece; 300-transmission assembly; Guide piece; 331-first guide cylinder; 332-second guide cylinder; 333-hollow cavity; 340-shift fork; 410-transmission rod; 411-fulcrum position; 412-active position; 413-slave position; 510 -Propulsion department.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and therefore should not be construed as limitations on the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise specified limit. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions are for the purpose of illustration only and do not represent the only embodiment.

FIG. 1 is a schematic structural view of a braking device 10 provided by an embodiment of the present invention; FIG. 2 is a cross-sectional view of the braking device 10 shown in FIG. 1 . As shown in Figures 1 and 2, an embodiment of the present invention provides a braking device 10 for limiting the movement of moving parts. The braking device 10 includes a first braking part 110, a first driving part 210 and a first Two driving parts 220 . The first braking part 110 is connected to the first driving part 210 . When the moving part is in the first state, the first driving part 210 is used to drive the first braking part 110 to move along the first direction, so that the first braking part 110 is pressed against the moving part; the first direction is consistent with the axis of the moving part to parallel. The second driving part 220 is spaced apart from the first driving part 210 along the first direction. When the moving part is in the second state, the second driving part 220 is connected with the first braking part 110 to limit the movement of the first braking part 110 .

Taking the moving part as a vehicle as an example, when the vehicle is in the first state, that is, the driving state, if it needs to be braked, the first driving part 210 works to drive the first braking part 110 to move along the first direction, so that The first brake part 110 is pressed against the wheel of the vehicle, and the axial pressure provided by the first brake part 110 generates a frictional torque that prevents the wheel from rotating, thereby realizing the service braking function. When the parking brake function needs to be performed, that is, the moving parts are in the second state, that is, the braking state, the first driving part 210 does not work, and the movement of the first braking part 110 is restricted by the second driving part 220 to maintain the parking brake. power, to perform the parking brake function, and reduce the possibility of overheating of the first drive unit 210 caused by the long-time operation of the first drive unit 210 . The braking device 10 can realize both functions of driving brake and parking brake at the same time, and has a high degree of integration, a compact structure, and a small footprint. Compared with hydraulic or pneumatic parking, the braking response is faster and the safety is higher. good.

In an actual application scenario, the first direction is the X direction in the figure. Taking the arrangement orientation shown in FIG. 2 as an example, the first direction is the horizontal direction. Taking the moving part as an example of a wheel, the first direction is the axial direction of the wheel. For the convenience of graphic comparison, the X direction refers to the first direction hereinafter.

Understandably, as shown in FIG. 2 , the brake device 10 may further include a brake disc 140 for connecting with moving parts. Taking the moving part as an example of a wheel of a car, the brake disc 140 is connected to the wheel. When the wheel is in a rotatable state, the brake disc 140 and the first braking part 110 are in a separated state, and the brake disc 140 and the wheel can rotate freely. When the first driving part 210 drives the first brake part 110 to move to press against the brake disc 140 , the brake disc 140 and the wheel are stopped by the friction torque, so that the wheel is in a braking state. The first brake part 110 may specifically be a brake block.

As shown in FIGS. 2 and 3 , in one embodiment, the brake device 10 includes a transmission assembly 300 , and the transmission assembly 300 includes a driving rod 310 and a driving block 320 threadedly connected to the driving rod 310 . The driving rod 310 is connected to the first driving part 210, and the first driving part 210 is used to drive the driving rod 310 to rotate in the X direction; the driving rod 310 drives the driving block 320 to move along the X direction; the first braking part 110 is connected to the driving block 320, and can move synchronously with the driving block 320.

Specifically, the first driving part 210 transmits power to the driving rod 310 to rotate the driving rod 310 . Since the driving block 320 is screwed to the driving rod 310 and the rotation of the driving block 320 is restricted, the driving block 320 is driven by the driving rod 310 to move along the X direction. The first braking part 110 is connected to the driving block 320, so when the driving block 320 moves along the X direction, the first braking part 110 can move synchronously with the driving block 320, thereby moving closer or farther away from the moving parts, thereby realizing Braking or unlocking of moving parts. The driving rod 310 is rotated forward or reversely by a predetermined angle, so that the driving block 320 is displaced to the left or right, so that the first braking part 110 is moved.

In other embodiments, except that the driving rod and the driving block cooperate to drive the first brake part to move, the driving rod and the driving block may not be provided, and the output end of the first driving part is connected with a gear. Specifically, the size (thickness) of the gear along the X direction changes gradually in the circumferential direction with the X direction as the axis, and the first braking portion abuts against the gear. When the gear rotates in the circumferential direction until it abuts against the first brake part at a position with a larger thickness, the first brake part approaches and presses against the brake disc; when the gear rotates to a position with a smaller thickness it abuts against the first brake part. When the moving part is connected, the first brake part is far away from the brake disc, thereby releasing the compression connection between the first brake part and the brake disc.

In one embodiment, the braking device includes the aforementioned driving rod and driving block. The end of the drive rod far away from the first brake part is provided with a bearing. When the first brake part presses the brake disc, the axial force is applied to the drive rod through the bearing to balance the braking and is transmitted from the first brake part to the drive. Axial thrust of the rod.

As shown in FIG. 2 , in one embodiment, the transmission assembly 300 further includes a guide member 330 , the drive block 320 is slidably connected to the guide member 330 , and the guide member 330 is used to limit the rotation of the drive block 320 . The rotation of the driving block 320 is restricted by the guide 330 , so that the driving block 320 screwed to the driving rod 310 can move back and forth along the X direction while the driving rod 310 rotates, thereby driving the first braking part 110 to move. The inside of the guide member 330 is configured with a hollow cavity 333 for accommodating the driving rod 310 and the driving block 320 . By accommodating components such as the driving rod 310 and the driving block 320 in the hollow cavity 333 , a certain degree of waterproof and dustproof effect is achieved, and the service life of each component is improved. The guide member 330 may specifically be a guide cylinder.

In one of the embodiments, a seal is provided between the inner wall of the hollow cavity 333 and the driving block 320 to ensure the sealing effect inside the entire braking device 10 and prevent impurities such as external water or dust from entering the braking device 10. , Improve the transmission stability and service life of internal components. Specifically, the seal can be an O-ring.

As shown in Fig. 2, Fig. 4 and Fig. 5, in one of the embodiments, the braking device 10 includes a transmission rod 410, and the transmission rod 410 has a fulcrum position 411, an active position 412 and a driven position 413; the fulcrum position 411 is rotationally connected On the guide member 330 , the active position 412 and the driven position 413 are rotatably connected to the driving block 320 and the first braking part 110 , respectively. The driving block 320 drives the first braking part 110 to move through the transmission rod 410 .

For example, when the first driving part 210 drives the driving block 320 to move rightward along the X direction through the driving rod 310, since the position of the guide member 330 is fixed, the driving rod 410 swings to the right with the fulcrum position 411 as the rotation center, thereby driving the connection. The first brake part 110 at the driven position 413 moves to the right, so that the first brake part 110 is pressed against the brake disc 140 . The guide member 330 is configured with a rotation slot for the fulcrum position 411 of the transmission rod 410 to be inserted and relatively rotated. The driving position 412 and the driven position 413 of the transmission rod 410 are respectively hinged with the driving block 320 and the first braking part 110 through a pin shaft.

As shown in FIG. 2 and FIG. 4 , in one embodiment, the distance between the active position 412 and the fulcrum position 411 is greater than the distance between the driven position 413 and the fulcrum position 411 . That is to say, the distance between the driving block 320 and the fulcrum position 411 is greater than the distance between the first braking part 110 and the fulcrum position 411 . According to the principle of leverage, the force is inversely proportional to the moment arm, so the axial thrust transmitted to the first braking part 110 is greater than the axial thrust output by the driving block 320 . Through this arrangement, the transmission rod 410 amplifies the output force of the driving block 320 and increases the pressing force between the first braking part 110 and the brake disc 140 , thereby increasing the braking force. Wherein, the distance between the active position 412, the driven position 413 and the fulcrum position 411 can be set according to the actual required force multiplier.

As shown in FIG. 4 , more specifically, the guide 330 includes a first guide cylinder 331 and a second guide cylinder 332 arranged along the X direction, which are connected end to end, and a semi-cylindrical notch is formed between the connection gaps. The fulcrum position 411 of the transmission rod 410 is semi-cylindrical, so as to match the semi-cylindrical notch. A shift fork 340 is connected to the end of the driving block 320 facing the transmission rod 410 , and the active position 412 is connected to the shift fork 340 through a pin shaft for rotation.

In one of the embodiments, the braking device 10 includes a pushing part 510 that is rotatably connected to the driven position 413, the pushing part 510 is located between the transmission rod 410 and the first braking part 110, and the transmission rod 410 pushes the first braking part 110 through the pushing part 510. A braking part 110 moves.

Wherein, the driving part 510 and the driven position 413 of the transmission rod 410 can be connected together by a connecting piece such as a pin, so that the transmission rod 410 drives the pushing part 510 to reciprocate along the X direction, and then the pushing part 510 pushes the first braking part 110 compresses the brake disc 140 to generate braking force, or releases the brake disc 140 to release the braking force. As shown in FIGS. 2 and 4 , the part of the pushing part 510 is located at the end of the hollow cavity 333, and the pushing part 510 is connected to the inner wall of the hollow cavity 333, thereby sealing the hollow cavity 333, so that the driving rod 310 and The drive block 320 and the like are located in a relatively airtight environment, which reduces the erosion of impurities such as water and dust, and prolongs the service life of each component. The pushing part 510 may specifically be a cylindrical piston with one end open and one end closed.

As shown in FIG. 2 and FIG. 3 , in one embodiment, the first driving part 210 is a torque motor, and the first gear is connected to the motor rotor 213 of the torque motor. Wherein, the torque motor also includes a motor housing 211 and a motor stator 212, the motor stator 212 and the motor rotor 213 are installed in the motor housing 211, the driving rod 310 is connected to the motor rotor 213, and rotates with the motor rotor 213 to realize power delivery. The motor rotor 213 is supported by the motor housing 211 through bearings, and the motor rotor 213 is supported by the bearings to reduce the friction coefficient during its movement and ensure its rotation accuracy. Further, an encoder is provided in the torque motor for collecting the rotational speed information of the motor rotor 213 , so as to realize precise control of the rotational speed and torque of the torque motor.

Among them, the motor rotor 213 has a hollow structure and has a housing cavity, so that components such as transmission components and transmission rods can be accommodated in the housing cavity, making full use of the limited space, reducing the volume of the braking device, and making the overall layout more compact and reasonable. .

As shown in Fig. 2 and Fig. 3, in one of the embodiments, the second driving part 220 includes an electromagnetic part (not marked), a moving piece 221 and a rotating piece 222, and the rotating piece 222 is connected with the driving rod 310; In the electrified state, the moving piece 221 is pressed against the rotating piece 222 to limit the rotation of the driving rod 310; when the electromagnetic part is in the electrified state, the electromagnetic part drives the moving piece 221 to separate from the rotating piece 222 to release the rotation of the driving rod 310 limit.

Specifically, when the moving part is in the braking state (non-rotating state) and needs to perform the parking brake function, the first driving part 210 does not work; at the same time, the electromagnetic part is not energized, so that the moving piece 221 presses the rotating piece 222, The rotation of the rotating piece 222 is restricted, thereby restricting the rotation of the driving rod 310 . Since the rotation of the driving lever 310 is restricted, the movement of the driving block 320 and the first braking part 110 is further restricted, so that they are kept at the current position, and the parking braking force is maintained to perform the parking braking function. At the same time, since the first driving part 210 does not work, the possibility of overheating of the first driving part 210 caused by the long-time operation of the first driving part 210 can be reduced.

Furthermore, the second drive part also includes an electromagnetic housing, the electromagnetic housing and the motor housing are assembled together by fasteners such as bolts, and the mating surfaces of the two are coated with sealant, which can enhance the protective seal inside the braking device Sex, prevent external water, dust and other impurities from entering the device. The lead-out wires in the second driving part are connected to the pin plugs of the cable connector through the open slot reserved on the electromagnetic housing, and the coordinated control and drive of the torque motor and the electromagnetic parts can be realized through the common cable connector. The risk of unreliability caused by external wiring is reduced, and the space structure occupied by the assembly is optimized.

As shown in FIG. 3 , in a specific embodiment, the second driving part 220 further includes an elastic member 223 connected between the moving piece 221 and the rotating piece 222 . When the electromagnet is in an electrified state, the elastic member 223 is in a deformed state. When the electromagnetic element is in the de-energized state, the elastic element 223 drives the moving piece 221 to press against the rotating piece 222 by its own elastic force. In this way, when the electromagnet is not energized, the moving piece 221 can be reset under the elastic force of the elastic piece 223, so that the moving piece 221 is separated from the rotating piece 222, and the parking brake is released. Wherein, the electromagnetic component may specifically be an electromagnet or an electromagnetic coil. The energization of the electromagnetic parts can be controlled by the control signal input from the outside, so as to realize the electronic control and automation of parking brake and service brake force maintenance. Through a suitable control algorithm, when the first driving part 210 such as the torque motor works for a long time, it can automatically switch to the braking force maintenance state, and the torque motor no longer outputs torque, exits the locked-rotor working condition, and avoids the danger of motor overheating. condition. In other embodiments, the elastic member may not be provided, and the electromagnetic member is a coil, and the moving piece is moved closer to or farther away from the rotating piece by passing a forward current or a reverse current to the coil.

As shown in FIG. 2 , in one embodiment, the brake device 10 includes the aforementioned brake disc 140 , and also includes a brake body 130 and a second brake portion 120 connected to the brake body 130 , the second brake portion 120 and the first braking part 110 are respectively located at two ends of the moving part. The brake main body 130 and the second brake part 120 are configured to operably move in the X direction.

Specifically, the brake main body 130 can move along the X direction relative to the brake disc 140 . When the first braking part 110 moves to the right along the X direction under the action of the driving block 320 and is pressed against the brake disc 140, the first braking part 110 exerts a rightward force on the brake disc 140, and the brake disc 140 generates The reverse force, that is, the leftward force exerted by the brake disc 140 on the driving block 320 , makes the brake main body 130 connected to the driving block 320 drive the second brake part 120 to move to the left and press against the brake disc 140 . In this way, both the first braking part 110 and the second braking part 120 can be pressed against both sides of the brake disc 140 , so that the brake disc 140 is subject to a relatively large axial pressing force, ensuring the reliability of braking.

The above-mentioned braking device 10, when it is necessary to brake moving parts such as wheels, the torque motor rotates, the output torque of the motor rotor acts on the drive rod 310, the drive rod 310 rotates and drives the drive block 320 to move in the X direction, and the drive rod 410 The output force of the driving block 320 is amplified and transmitted to the pushing part 510 , and the pushing part 510 drives the first braking part 110 to press the brake disc 140 . At the same time, the second brake part 120 on the other side also presses the brake disc 140, and the service braking of the wheels is realized through the friction force between the brake disc 140 and the two brake parts. When the parking brake function needs to be performed, the first driving part 210 does not work, and the moving piece 221 presses the rotating piece 222 to limit the rotation of the rotating piece 222, thereby limiting the rotation of the driving lever 310 and the movement of the first braking part 110 , to maintain the parking brake force and execute the parking brake function. It can not only reduce the possibility of overheating of the first driving part 210 caused by the long-time working of the torque motor, but also realize the two functions of driving brake and parking brake at the same time, with high integration, compact structure, small space occupation, and compared with hydraulic Or pneumatic parking, faster brake response and better safety.

Further, an embodiment of the present invention also provides a vehicle, including the braking device 10 mentioned above. When the vehicle is in the driving state, if it needs to be braked, the first driving part 210 works to drive the first braking part 110 to move along the X direction, so that the first braking part 110 is pressed against the moving parts to realize Service brake function. When the parking brake function needs to be performed, the first drive part 210 does not work, and the movement of the first brake part 110 is restricted by the second drive part 220 to maintain the parking brake force and perform the parking brake function, reducing the first Working of the driving part 210 for a long time may cause the possibility of overheating of the first driving part 210 . The braking device 10 can realize both functions of driving brake and parking brake at the same time, and has a high degree of integration, a compact structure, and a small footprint. Compared with hydraulic or pneumatic parking, the braking response is faster and the safety is higher. good.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. A braking device for limiting the movement of moving parts, characterized in that it comprises: the first brake part (110); The first driving part (210), the first braking part (110) is connected to the first driving part (210); when the moving part is in the first state, the first driving part (210) uses Drive the first braking part (110) to move along the first direction, so that the first braking part (110) is pressed against the moving part; the first direction and the axis of the moving part to parallel; The second driving part (220) is spaced apart from the first driving part (210) along the first direction; when the moving part is in the second state, the second driving part (220) and the first driving part a braking part (110) is connected to limit the movement of the first braking part (110); The brake device includes a transmission assembly (300), and the transmission assembly (300) includes a drive rod (310) and a drive block (320) threadedly connected to the drive rod (310); The driving rod (310) is connected to the first driving part (210), and the first driving part (210) is used to drive the driving rod (310) to rotate around the first direction; the The driving rod (310) drives the driving block (320) to move along the first direction; the first brake part (110) is connected to the driving block (320), and can move with the driving block (320) ) move synchronously; The second driving part (220) includes an electromagnet, a moving piece (221) and a rotating piece (222), and the rotating piece (222) is connected to the driving rod (310); When the moving parts are in the braking state, the first driving part (210) does not work; at the same time, the electromagnet is in a de-energized state, and the moving piece (221) is pressed against the rotating piece (222 ), to limit the rotation of the drive rod (310), and limit the movement of the drive block (320) and the first brake part (110); When the electromagnet is in an electrified state, the electromagnet drives the moving piece (221) to separate from the rotating piece (222), so as to release the rotation restriction on the driving rod (310). 2. The brake device according to claim 1, characterized in that, the transmission assembly (300) further comprises a guide (330), the driving block (320) is slidably connected to the guide (330), The guide (330) is used to limit the rotation of the driving block (320). 3. The brake device according to claim 2, characterized in that the brake device comprises a transmission rod (410), and the transmission rod (410) has a fulcrum position (411), an active position (412) and a slave position The driving position (413); the fulcrum position (411) is rotatably connected to the guide (330), and the active position (412) and the driven position (413) are rotatably connected to the driving block (320) ) and the first brake part (110); the driving block (320) drives the first brake part (110) to move through the transmission rod (410). 4. The brake device according to claim 3, characterized in that, the distance between the active position (412) and the fulcrum position (411) is greater than the distance between the driven position (413) and the fulcrum position The distance between (411). 5. The braking device according to claim 4, characterized in that, the braking device comprises a pushing part (510) rotatably connected to the driven position (413), and the pushing part (510) is located at the Between the transmission rod (410) and the first braking part (110), the transmission rod (410) pushes the first braking part (110) to move through the pushing part (510). 6. The brake device according to claim 2, characterized in that, the inner structure of the guide (330) has a hollow cavity for accommodating the driving rod (310) and the driving block (320) (333). 7. The brake device according to claim 6, characterized in that a seal is provided between the inner wall of the hollow cavity (333) and the driving block (320). 8. The brake device according to claim 1, characterized in that, the second driving part (220) further comprises an elastic member (223), and the elastic member (223) is connected to the moving piece (221) and between the rotating piece (222); When the electromagnetic element is in the energized state, the elastic element (223) is in a deformed state; When the electromagnetic part is in the de-energized state, the elastic part (223) drives the moving piece (221) to press against the rotating piece (222) by its own elastic force. 9. The brake device according to claim 1, characterized in that, the brake device further comprises a brake body (130) and a second brake part (120) connected to the brake body (130) , the second brake part (120) and the first brake part (110) are respectively located at both ends of the moving part; The braking body (130) and the second braking portion (120) are configured to operably move in the first direction. 10. A vehicle, characterized by comprising the brake device according to any one of claims 1-9.