Brake device and mobile equipment

Abstract

The invention discloses a brake device and mobile device.The brake device comprises a base plate, the base plate is provided with at least one pair of brake modules, and the pair of brake modules are driven by a driver to at least move back to back and are switched from a non-brake state to a brake state; each brake module comprises at least one brake roller protruding out of the opposite sides of the pair of brake modules, the brake rollers are eccentrically arranged on a wheel supporting shaft, and the wheel supporting shaft is arranged on the brake modules. According to the brake device, the brake idler wheel eccentrically arranged on the wheel supporting shaft is adopted for braking, during braking, the brake idler wheel tends to rotate around the wheel supporting shaft under the action of friction force, and due to the fact that the brake idler wheel is eccentrically arranged, the brake idler wheel has the effect of wedging towards a rail face for self-locking after rotating, and the brake idler wheel can be prevented from being damaged. Therefore, larger friction force can be obtained, the braking time and stroke can be shortened, and the braking effect can be improved.

Description

Technical Field

[0001] This invention relates to the field of braking, and in particular to braking devices and mobile equipment. Background Technology

[0002] In various lifting devices, lifting motion is achieved through the cooperation of a synchronous belt and a synchronous pulley, as shown in the patent document with authorization announcement number CN222770559U.

[0003] However, there is a risk of breakage when the synchronous belt is used for a long time or under excessive load. In this case, the counterweights at both ends of the synchronous belt and the gripper mounting plate and the mechanism on them will fall freely due to gravity and be damaged.

[0004] To address this issue, it is desirable to install braking devices on the counterweight and gripper mounting plate to brake when necessary.

[0005] In a feasible braking structure, braking can be achieved by driving the brake pads to come into close contact with the brake surface of the rail via a power unit.

[0006] This structure suffers from insufficient braking force and unsatisfactory braking performance. Summary of the Invention

[0007] The purpose of this invention is to solve the above-mentioned problems existing in the prior art and to provide a braking device and a mobile device.

[0008] The objective of this invention is achieved through the following technical solution: A braking device includes a base plate on which at least one pair of braking modules are disposed. The pair of braking modules are driven by a driver to move at least in opposite directions and switch from a non-braking state to a braking state. Each braking module includes at least one brake roller protruding beyond the opposite side of the pair of braking modules. The brake roller is eccentrically disposed on a wheel support shaft, which is disposed on the braking module.

[0009] Preferably, in the braking device, the brake roller is a rubber-coated roller.

[0010] Preferably, in the braking device, each of the brake modules is connected to a driver that drives its reciprocating movement; Or a pair of the brake modules are connected to the same driver that drives them to reciprocate synchronously. Alternatively, one of the pair of brake modules may be connected to a driver that drives its reciprocating linear movement. The pair of brake modules may be connected by a synchronization mechanism. When the driver drives one of the brake modules to move, the synchronization mechanism drives the other brake module to move in the opposite direction.

[0011] Preferably, in the braking device, the synchronization mechanism includes a rotation shaft that is rotatably mounted on the base plate and parallel to the wheel support shaft, and the rotation shaft is connected to a pair of brake modules through two centrally symmetrical synchronization rods connected to both sides of the rotation shaft.

[0012] Preferably, in the braking device, the axis of the rotation shaft and the axis of the wheel support shaft are in the same plane, the rotation shaft is located at the middle position between the two wheel support shafts, and the synchronizing rod is pivotally connected to the wheel support shaft.

[0013] Preferably, in the braking device, the rotating shaft is connected to a first ratchet mechanism, which prevents the rotating shaft from rotating along a first rotation direction to limit the synchronization mechanism from driving a pair of brake modules to move towards each other.

[0014] Preferably, in the braking device, the first ratchet mechanism is connected to a release mechanism, and the release mechanism can drive the pawl of the first ratchet mechanism to separate from the ratchet.

[0015] Preferably, in the braking device, the actuator is a spring, which is normally in a compressed state and connected to one of the braking modules. The rotation shaft is connected to a second ratchet mechanism, which prevents the rotation shaft from rotating in a second rotation direction to limit the release of the spring force. The second ratchet mechanism is connected to a locking mechanism, which can drive the second ratchet mechanism to release the restriction on the rotation of the rotation shaft in the second rotation direction.

[0016] A braking device includes a base plate on which at least one pair of braking modules are disposed. The pair of braking modules is driven by a driver to switch between a non-braking state and a braking state. Each braking module includes at least one brake roller, which is eccentrically disposed on a wheel support shaft, which is disposed on the braking module.

[0017] Mobile devices, including braking devices as described in any of the above.

[0018] The advantages of the technical solution of this invention are mainly reflected in: The braking device of the present invention uses a brake roller eccentrically mounted on the wheel support shaft for braking. During braking, the brake roller tends to rotate around the wheel support shaft under the action of friction. Since the brake roller is eccentrically mounted, it has a self-locking effect by wedging into the track surface after rotation, thereby obtaining greater friction, which helps to shorten braking time and stroke and improve braking effect.

[0019] The brake roller of the present invention is a rubber-coated roller, which can make full use of the material properties of the rubber coating to achieve shock absorption during braking, and at the same time help to increase the friction during braking and improve the braking effect.

[0020] The braking device of the present invention can drive two braking modules to move synchronously through a driver and a synchronization mechanism, resulting in good braking synchronization and higher stability.

[0021] This invention restricts the rotation of the synchronization mechanism's rotation axis along the first rotation direction by setting a first ratchet mechanism. This effectively prevents the brake module from moving in the opposite direction when it switches to the braking state, ensuring continuous and sufficient frictional contact between the brake roller and the brake surface to achieve braking. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the first example structure of the braking device of the present invention switched to the braking state; Figure 2 This is a schematic diagram of the first example structure of the braking device of the present invention in a non-braking state; Figure 3 This is a schematic diagram of the second example structure of the braking device of the present invention switched to the braking state; Figure 4 This is a schematic diagram of the third example structure of the braking device of the present invention in a braking state; Figure 5 This is a schematic diagram of the release mechanism in the released state of the third example structure of the braking device of the present invention; Figure 6 This is a partial perspective view from the first angle of the fourth example structure of the braking device of the present invention; Figure 7 This is a schematic diagram of two brake modules in a braking state, representing the fourth example structure of the braking device of the present invention. Figure 8 This is a schematic diagram of two brake modules in a non-braking state, representing the fourth example structure of the braking device of the present invention; Figure 9 This is a schematic diagram of the state when the locking mechanism of the fourth example structure of the braking device of the present invention unlocks the second ratchet mechanism; Figure 10 This is a second perspective perspective view of the fourth example structure of the braking device of the present invention; Figure 11 This is a partial perspective view of the braking device of the present invention, which is movably mounted on a vertical guide rail and connected to an open timing belt. Detailed Implementation

[0023] The objectives, advantages, and features of this invention will be illustrated and explained through the following non-limiting description of preferred embodiments. These embodiments are merely typical examples of applying the technical solutions of this invention, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by this invention.

[0024] In the description of the solution, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] Example 1 The braking device disclosed in this invention will now be described in conjunction with the accompanying drawings, as shown below. Figure 1 As shown, it includes a base plate 100, on which at least one pair of brake modules 300 are disposed. The pair of brake modules 300 are driven by a driver 500 to move at least in opposite directions and switch from a non-braking state to a braking state. Each brake module 300 includes at least one brake roller 310 protruding beyond the opposite side of the pair of brake modules 300. The brake roller 310 is eccentrically disposed on a wheel support shaft 320, which is disposed on the brake module 300.

[0026] As attached Figure 2 As shown, when the brake module 300 is in a non-braking state, the brake rollers 310 of the pair of brake modules 300 maintain a gap with the brake surfaces 700 parallel to their outer sides. (See attached diagram) Figure 1 As shown, when the brake module 300 switches to the braking state, the driver 500 drives a pair of brake modules 300 to move backwards, causing the two brake rollers 310 to abut against the brake surfaces 700 parallel to their outer sides. Friction is generated between the friction rollers and the brake surfaces 700, thereby achieving braking. The brake surfaces 700 can be vertically or horizontally arranged. Correspondingly, the pair of brake modules can move up and down or horizontally to switch states.

[0027] As attached Figure 1As shown, the substrate 100 can be a vertically arranged flat plate. The number of brake modules 300 can be set as needed. Taking a pair as an example, the flat plate is provided with at least one linear guide rail 900. Preferably, there are two linear guide rails 900 arranged horizontally. Each linear guide rail 900 includes two sliders. The pair of brake modules 300 are respectively connected to the two sliders of the two linear guide rails 900, so that each brake module 300 moves along the two linear guide rails 900.

[0028] The brake module 300 includes a movable plate 330, which connects two sliders of the two linear guide rails 900. The wheel support shaft is vertically mounted on the movable plate 330 and located near the outer side of the movable plate 330 (the opposite sides of the two movable plates), causing a portion of the brake roller 310 mounted on the wheel support shaft to protrude beyond the outer side of the movable plate 330. Furthermore, to enhance braking performance and reduce vibration during braking, the brake roller 310 is a rubber-coated roller. The outer coating of the rubber-coated roller can be made of PU or rubber, etc., and is not limited here.

[0029] The pair of brake modules 300 can be driven to move along the linear guide rail 900 by using different drive structures as needed.

[0030] As attached Figure 1 As shown, in one embodiment, each brake module 300 is connected to a driver 500 that drives its reciprocating movement; the driver 500 may be, for example, an electric cylinder, a hydraulic cylinder, a pneumatic cylinder, etc., and is not limited here. In this case, two drivers 500 are arranged side-by-side on the base plate 100, with their drive shafts facing away from each other. When braking is required, the two drivers 500 drive a pair of brake modules 300 to move in opposite directions to switch to a braking state, thereby causing the brake rollers 310 on the pair of brake modules 300 to abut against the two brake surfaces 700.

[0031] When braking is not required, the two actuators 500 drive a pair of brake modules 300 to move toward each other and switch to a non-braking state, thereby maintaining a gap between the brake rollers 310 on the pair of brake modules 300 and their outer brake surfaces 700.

[0032] As attached Figure 3As shown, in another embodiment, a pair of brake modules 300 are connected to the same driver 500 that drives them to reciprocate synchronously. In this case, the driver 500 can be a double-headed cylinder with its two telescopic rods connected to one of the brake modules 300, or the driver 500 includes a double helical screw (not shown) rotatably mounted on the base plate 100. The double helical screw is parallel to the linear guide rail 900 and located between the two linear guide rails 900. The screw of the double helical screw is connected to a drive motor (not shown) that drives its rotation through a gear transmission mechanism or a synchronous belt transmission mechanism. At the same time, the two opposing movable nuts of the double helical screw are respectively connected to the moving plate 330 of one of the brake modules 300. When the screw of the double helical screw rotates, it drives the two movable nuts on it to move in opposite directions simultaneously, thereby driving the pair of brake modules 300 to move in opposite directions simultaneously.

[0033] As attached Figure 4 As shown, in a more preferred embodiment, one of the pair of brake modules 300 is connected to a driver 500 that drives its reciprocating linear movement. For example, the left brake module 300 is connected to the driver 500. The driver 500 can also be an electric cylinder, hydraulic cylinder, etc. as described above, and is not limited here.

[0034] Meanwhile, the pair of brake modules 300 are connected by a synchronization mechanism 200. When the driver 500 drives one of the brake modules 300 to move, the synchronization mechanism 200 drives the other brake module 300 to move in the opposite direction.

[0035] Specifically, the synchronization mechanism 200 includes a rotation shaft 210 rotatably mounted on the base plate 100 and parallel to the wheel support shaft 320. The axis of the rotation shaft 210 and the axis of the wheel support shaft 320 are located in the same plane, which is perpendicular to the base plate 100 and parallel to the extension direction of the linear guide rail 900. Of course, this is not mandatory.

[0036] Meanwhile, the rotation shaft 210 is located in the middle between the two wheel support shafts 320. The rotation shaft 210 is connected to a pair of brake modules 300 through two centrally symmetrically connected synchronous rods 220 on both sides of the rotation shaft 210. For example, pivot connecting plates (not shown in the figure) are respectively provided on opposite sides of the rotation shaft 210 to pivotally connect one end of a synchronous rod 220. The other end of each synchronous rod 220 is pivotally connected to the brake module 300, or more preferably, to the wheel support shaft 320 of the brake module 300. This can effectively simplify the installation structure.

[0037] When the driver drives the brake module 300 to switch from a non-braking state to a braking state, as shown in the attached... Figure 4 As shown, when the driver 500 drives the left brake module 300 to move to the left, the brake module 300 pulls the left synchronization rod 220 to drive the rotation shaft 210 to rotate clockwise (second rotation direction r2), thereby the rotation shaft 210 drives the right synchronization rod 220 to push the right brake module 300 to move to the right and switch to the braking state.

[0038] When the rotation shaft 210 rotates counterclockwise (first rotation direction r1), the rotation shaft 210 drives the synchronization rods 220 on both sides to pull the pair of brake modules 300 to move towards each other and switch to non-brake state.

[0039] As attached Figure 4 As shown, in order to better maintain the brake module 300 in the braking state after it moves to the braking state, the rotation shaft 210 is connected to a first ratchet mechanism 400. The first ratchet mechanism 400 prevents the rotation shaft 210 from rotating along a first rotation direction r1, thereby limiting the synchronization mechanism 200 from driving the pair of brake modules 300 to move towards each other. Specifically, the first ratchet mechanism 400 includes a ratchet 410 and a pawl 420. The ratchet 410 is coaxially disposed on the rotation shaft 210. The pawl 420 is pivotally connected to a pin 430. The pin 430 is vertically fixed to the base plate 100. The pawl 420 is connected to an elastic element 440 that engages with the ratchet teeth of the ratchet 410. The elastic element is, for example, a torsion spring fitted on the pin 430. Meanwhile, the synchronizing rod can be pivotally connected to the ratchet. Specifically, the ratchet has two evenly distributed circumferential pivot holes, and each synchronizing rod has a pivot connecting shaft 230 that rotates in the pivot hole.

[0040] As attached Figure 4 Appendix Figure 5As shown, in order to release the rotation restriction of the self-rotating shaft 210 by the first ratchet mechanism 400 when necessary, the first ratchet mechanism 400 is also connected to a release mechanism 600. The release mechanism 600 drives the pawl 420 of the first ratchet mechanism 400 to separate from the ratchet 410, so that the rotation of the ratchet 410 is no longer restricted by the pawl 420. At this time, the driver 500 can drive the brake module 300 connected to it to move towards another brake module 300, thereby releasing the brake by causing the pair of brake modules 300 to move towards each other through the synchronization mechanism 200. The release mechanism 600 includes, for example, a wire 610 and a power device 620. One end of the wire 610 is connected to the pawl 420, and the other end of the wire 610 is connected to the telescopic shaft of the power device 620. The power device 620 is, for example, an electric cylinder, a pneumatic cylinder, or other feasible device, which is not limited here. When the telescopic shaft of the power unit 620 extends, the wire 610 can be in a slightly relaxed state, so that the vibration of the pawl 420 will not be transmitted to the power unit 620. At this time, the pawl 420 engages with the ratchet teeth of the ratchet wheel 410. When the telescopic shaft of the power unit 620 retracts, the wire 610 is tightened and pulls the pawl 420 to rotate away from the ratchet wheel 410 and separate from the ratchet wheel 410. At this time, the ratchet wheel 410 can rotate along the first rotation direction. Therefore, the brake module connected to it can be driven by the driver to move towards another brake module, and then the other brake module can be moved synchronously to switch to the non-braking state through the synchronization mechanism.

[0041] In the above embodiments, the drivers 500 are all active devices. In another embodiment, the driver 500 can be a passive device, for example, as shown in the attached figure. Figure 6 -Appendix Figure 8 As shown, the driver 500 is a spring. The spring is normally in a compressed state and is connected to one of the brake modules. Specifically, one of the brake modules is connected to an adapter block 510. The adapter block 510 is disposed opposite to an abutment block 520. The abutment block 520 is fixed on the base plate 100. The spring is connected between the adapter block 510 and the abutment block 520. Thus, the spring in the compressed state can push the adapter block 510 to move away from the abutment block 520, thereby driving the two brake modules to move in opposite directions and switch from a non-braking state to a braking state.

[0042] When braking is not required, in order to keep the spring compressed and prevent the elastic force from being released, it is necessary to prevent the rotation shaft 210 from rotating along the second rotation direction r2 under normal conditions. Correspondingly, as shown in the attached diagram... Figure 6 -Appendix Figure 8As shown, the rotation shaft 210 is connected to a second ratchet mechanism 800. The second ratchet mechanism 800 prevents the rotation shaft 210 from rotating in the second rotation direction r2, thereby limiting the release of the spring force. Specifically, the second ratchet mechanism 800 includes a second ratchet 810 and a second pawl 820. The second ratchet 810 is also coaxially mounted on the rotation shaft 210, and the second pawl 820 is pivotally connected to the pin 430. Under normal conditions, the second pawl 820 engages with the ratchet teeth of the second ratchet 810, thereby limiting the rotation of the rotation shaft 210 in the second rotation direction r2 by restricting the rotation of the second ratchet 810 in the second rotation direction r2. At this time, the spring can remain in a compressed state, and at the same time, the pair of brake modules are in a non-brake state, as shown in the attached diagram. Figure 8 As shown.

[0043] Furthermore, a certain structure is required to maintain and release the restriction of the second ratchet mechanism 800 on the rotation axis 210 along the second rotation direction r2. Therefore, as shown in the attached... Figure 6 Appendix Figure 9 As shown, the second ratchet mechanism 800 is connected to the locking mechanism A00, and the locking mechanism A00 drives the second ratchet mechanism 800 to release the rotation of the rotation shaft 210 along the second rotation direction r2.

[0044] The specific structure of the locking mechanism A00 can be determined as needed. In one embodiment, as shown in the attached figure... Figure 6 Appendix Figure 9 As shown, the locking mechanism A00 includes a first seat A10 and a second seat A20, which are hinged to a pivot shaft A30. The pivot shaft A30 is parallel to the rotation shaft 210 and coaxial with the pin shaft 430. The second seat is connected to the base plate.

[0045] Meanwhile, a power module A40 (not shown in the figure) is provided between the first seat A10 and the second seat A20 to drive the first seat A10 to rotate relative to the second seat A20. The power module A40 is, for example, an electric push rod, an electric cylinder, etc., which is not limited here. The two ends of the power module A40 are hinged to the first seat A10 and the second seat A20. A connecting block A50 is provided on the top of the first seat A10. The connecting block A50 is connected to a connecting rod A60 parallel to the rotation axis 210. The connecting rod A60 is connected to one end of a drive rod A70. The other end of the drive rod A70 is connected to the second pawl 820.

[0046] As attached Figure 7 Appendix Figure 10As shown, when the power module A40 drives the seat A10 to rotate relative to the seat A20, it can drive the drive rod A70 and the pawl 820 to rotate around the pin 430, thereby separating the pawl from the ratchet. At this time, the ratchet can rotate along the second rotation direction r2, and the brake module is switched to the braking state.

[0047] As attached Figure 10 Appendix Figure 11 As shown, the braking device is connected to at least one end of an open timing belt B00 or chain of a lifting machine, and the braking device moves up and down along the vertical guide rail C00. A pair of braking modules move along the X-axis, and the rotation axis extends along the Y-axis, with the X-axis and Y-axis perpendicular to each other. At this time, the first seat A10 is used to connect one end of the open timing belt or chain, and the second seat A20 can connect the other end of the open timing belt or chain. However, this is not mandatory; the other end of the open timing belt or chain can be mounted on a winding machine. Furthermore, the second seat A20 is connected to the base plate 100 and can be movably limited on the vertical guide rail C00 by means of clamping wheels, etc.

[0048] At this time, in order to determine in a timely manner whether the braking device needs to brake to prevent the braking device from freefalling when the open timing belt or chain breaks, an accelerometer (not shown in the figure) is provided on the seat body A10 or seat body A20 to detect whether they are in freefall. Of course, other methods can also be used to detect whether the seat body A10 and seat body A20 are in freefall. For example, a sensor can be set to detect whether the open timing belt or chain connected to the braking device is broken to determine whether the seat body A10 and seat body A20 are in freefall. For example, a tension sensor can be set between the seat body A10 or seat body A20 and the open timing belt or chain to detect whether there is a sudden change in tension. When the tension measured by the tension sensor suddenly decreases, it can be determined that the open timing belt or chain is broken and the seat body A10 and seat body A20 are in freefall.

[0049] When the first seat A10 and the second seat A20 are not in free fall, the power module A40 keeps the first seat A10 and the second seat A20 in a normal state. At this time, the first seat A10 and the second seat A20 are arranged vertically opposite each other, and the drive rod A70 connected to the first seat A10 is in a vertical or approximately vertical state, and the second pawl 820 engages with the ratchet teeth of the second ratchet wheel 810.

[0050] When the first seat A10 and the second seat A20 begin free fall, the accelerometer detects that the first seat A10 and the second seat A20 are in free fall, and the power module A40 drives the first seat A10 to rotate downward relative to the second seat A20, as shown in the attached figure. Figure 8 As shown, the drive body A10 is rotated to the left. At this time, the drive rod A70 drives the pawl 820 to rotate away from the ratchet 810 and separate it from the ratchet 810. This allows the spin shaft 210 to rotate along the second rotation direction r2. Simultaneously, the spring force is released, driving the pair of brake modules 300 to move in opposite directions and switch from a non-braking state to a braking state. At this time, the brake rollers abut against the two parallel brake surfaces 700 of the vertical guide rail, generating friction. After the brake rollers 310 contact the brake surfaces 700, the first ratchet mechanism 400 restricts the spin shaft 210 from rotating along the first rotation direction r1, thereby restricting the pair of brake modules 300 from moving towards each other.

[0051] In the above embodiments, sensors such as accelerometers are needed to detect free fall, and a power module A40 with a power source is needed to drive seat A10 to rotate relative to seat A20. This has drawbacks such as complex structure, long response time, and additional energy consumption.

[0052] In a preferred embodiment, the accelerometer or other sensors used to detect free fall in the above embodiments can be omitted, and the power module A40 can be replaced by a tension spring. The number of tension springs can be set to one or more as needed, and is not limited here.

[0053] The tension spring is offset to the side of the pivot shaft A30. One end of the tension spring is connected to the connecting shaft A80 on the left side of the protrusion below the first seat A10, and the other end is connected to the connector A90 located on the top left side of the second seat A20. As attached Figure 9 Appendix Figure 11 As shown, when the braking device is not in free fall, the seat body A10 and seat body A20 are in a normal state of being directly opposite each other, and at this time, the tension spring is in a stretched state. Because the tension of the open timing belt or chain overcomes the elastic force of the tension spring, the elastic force of the tension spring cannot be released.

[0054] As attached Figure 10As shown, when the open timing belt or chain breaks and the first seat A10 and the second seat A20 fall freely, the open timing belt or chain no longer exerts tension on the first seat A10. At this time, the elastic force of the tension spring can be released, thereby driving the first seat A10 to deflect to the left relative to the second seat A20 to drive the second ratchet mechanism 800's pawl 820 to separate from the second ratchet 810, thereby releasing the restriction on the rotation of the rotation axis 210 along the second rotation direction r2.

[0055] This structure eliminates the need for sensors and the active power module A40, resulting in a simpler design. It requires no power supply, is unaffected by power outages, and offers better stability. Furthermore, the absence of signal transmission leads to faster response and higher braking efficiency, significantly improving equipment safety. Additionally, the release mechanism can be omitted from the braking device in this embodiment.

[0056] Example 2 This embodiment has a similar overall structure to the above embodiments, and it also includes a base plate 100. At least one pair of brake modules 300 are disposed on the base plate 100. Each brake module 300 includes at least one brake roller 310. The brake roller 310 is eccentrically disposed on a wheel support shaft 320. The wheel support shaft 320 is disposed on the brake module 300.

[0057] Unlike Embodiment 1, in this embodiment, the pair of brake modules of the braking device do not move in opposite directions. For example, they can be mounted on a moving trolley that translates along a track. The braking device can drive the pair of brake modules 300 to move downwards simultaneously via a driver, causing their brake rollers 310 to rub against the top surface of the track, thereby achieving braking and deceleration. In this case, the brake rollers of the two brake modules do not protrude beyond the opposite sides of the two brake modules, but rather protrude beyond the lower sides of the two brake modules. When the vehicle speed decreases to a certain level, the driver can drive the two brake modules upwards to switch back to the non-braking state. In this case, the driver of the braking device uses an active device.

[0058] Example 3 This embodiment discloses a mobile device including a braking device as described in Embodiment 1 or Embodiment 2 above.

[0059] This invention has many other embodiments, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of this invention.

Claims

1. A braking device, comprising a base plate, wherein at least one pair of braking modules are disposed on the base plate, the pair of braking modules being driven by a driver to move at least in opposite directions and switch from a non-braking state to a braking state, characterized in that: Each of the brake modules includes at least one brake roller protruding beyond the opposite sides of a pair of brake modules, the brake roller being eccentrically disposed on a wheel support shaft disposed on the brake module.

2. The braking device according to claim 1, characterized in that: The brake roller is a rubber-coated roller.

3. The braking device according to claim 1, characterized in that: Each of the brake modules is connected to a driver that drives its reciprocating movement; Or a pair of the brake modules are connected to the same driver that drives them to reciprocate synchronously. Alternatively, one of the pair of brake modules may be connected to a driver that drives its reciprocating linear movement. The pair of brake modules may be connected by a synchronization mechanism. When the driver drives one of the brake modules to move, the synchronization mechanism drives the other brake module to move in the opposite direction.

4. The braking device according to claim 3, characterized in that: The synchronization mechanism includes a self-rotating shaft that is rotatably mounted on the base plate and parallel to the wheel support shaft. The self-rotating shaft is connected to a pair of brake modules via two centrally symmetrical synchronization rods connected to both sides of the self-rotating shaft.

5. The braking device according to claim 4, characterized in that: The axis of the rotation shaft and the axis of the wheel support shaft are in the same plane. The rotation shaft is located in the middle position between the two wheel support shafts. The synchronizing rod is pivotally connected to the wheel support shaft.

6. The braking device according to claim 3, characterized in that: The rotating shaft is connected to a first ratchet mechanism, which prevents the rotating shaft from rotating along a first rotation direction to limit the synchronization mechanism from driving the pair of brake modules to move towards each other.

7. The braking device according to claim 6, characterized in that: The first ratchet mechanism is connected to a release mechanism, which can drive the pawl of the first ratchet mechanism to separate from the ratchet.

8. The braking device according to claim 4, characterized in that: The actuator is a spring, which is normally compressed and connected to a brake module. The rotation shaft is connected to a second ratchet mechanism, which prevents the rotation shaft from rotating in a second rotation direction to limit the release of the spring force. The second ratchet mechanism is connected to a locking mechanism, which can drive the second ratchet mechanism to release the restriction on the rotation of the rotation shaft in the second rotation direction.

9. A braking device, comprising a base plate, wherein at least one pair of braking modules are disposed on the base plate, and the pair of braking modules are driven by a driver to switch between a non-braking state and a braking state, characterized in that: Each of the brake modules includes at least one brake roller, which is eccentrically mounted on a wheel support shaft, which is mounted on the brake module.

10. A mobile device, characterized in that: Includes the braking device as described in any one of claims 1-9.

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