NL2024211B9

NL2024211B9 - Electromechanical braking method based on disc spring parking

Info

Publication number: NL2024211B9
Application number: NL2024211A
Authority: NL
Inventors: Jin Huawei; Wang Fujie; Li Huanan
Original assignee: Univ Anhui Sci & Technology
Priority date: 2019-01-02
Filing date: 2019-11-11
Publication date: 2020-10-29
Also published as: CN109611474B; NL2024211A; CN109611474A; NL2024211B1

Abstract

The present invention relates to an electromechanical braking method based on disc spring parking, including an electromechanical braking module, a connecting rod braking assembly, and a disc spring parking module, where the electromechanical braking module includes a motor, couplings, a speed reducer, a ball screw, a nut, and a vertical slide; the connecting rod braking assembly includes a nut hinge, a housing, an upper housing hinge, a horizontal braking push block hinge, a friction plate, a horizontal braking push block, pendulum rod assemblies, and a three?support?rod linkage mechanism; the disc spring parking module includes a vertical slide, a disc spring, a horizontal braking push block hinge connecting rod, and a fork block; setting of the disc spring implements a parking function, setting of the three?support?rod linkage mechanism increases virtual constraints of the mechanism, and improves bearing capacity of the mechanism and braking stability, setting of the electromechanical braking module implements braking release, setting of the fork block implements motor release, and braking control conversion in a 90?degree direction improves space utilization.

Description

ELECTROMECHANICAL BRAKING METHOD BASED ON DISC SPRING PARKING

BACKGROUND Technical Field The present invention relates to the field of braking technologies, and specifically, to an electromechanical braking method based on disc spring parking. Related Art Most of existing braking systems are hydraulic or pneumatic braking systems, and need to be equipped with a large quantity of pipelines and power sources on the basis of traditional hydraulic cylinders or pneumatic cylinders. As a result, not only the volume is relatively large, but also certain environmental pollution hazards exist. Under the current development trend of intelligence, networking and lightweight, how to reduce the component volume, improve the response capability and reduce the risk of pollution while ensuring the braking performance has become a development direction of braking technologies. Moreover, some important moving parts need to perform clasping and braking in a static state, that is, to have a parking function. Therefore, an electromechanical braking method based on disc spring parking is developed.

SUMMARY To resolve deficiencies of the prior art, an objective of the present invention is to provide an electromechanical braking method based on disc spring parking, where setting of a disc spring implements a parking function, setting of a three-support-rod linkage mechanism increases virtual constraints of the mechanism, and improves bearing capacity of the mechanism and braking stability, setting of an electromechanical braking module implements braking release, setting of a fork block implements motor release, and braking control conversion in a 90-degree direction improves space utilization. To achieve the objective of the present invention, the following technical solutions are adopted. An electromechanical braking method based on disc spring parking is provided, including an electromechanical braking module, a connecting rod braking assembly, and a disc spring parking module, where the electromechanical braking module includes a motor, 1 a coupling a, a speed reducer, a coupling b, a ball screw, a nut, and a vertical slide; the motor is connected to the speed reducer through the coupling a, and then is connected to the ball screw through the coupling b; the ball screw is converted from rotary motion to linear movement through the nut, and the nut moves vertically up and down on the vertical slide; the connecting rod braking assembly includes a nut hinge, a housing, an upper housing hinge, a pendulum rod assembly a, a horizontal braking push block hinge, a friction plate, a horizontal braking push block, a pendulum rod assembly b, and a three-support-rod linkage mechanism; the pendulum rod assembly a is fixed to the housing through the upper housing hinge, and the pendulum rod assembly b is hingedly connected to the nut through the nut hinge; the pendulum rod assembly a and the pendulum rod assembly b are hingedly connected to the horizontal braking push block through the horizontal braking push block hinge, and the horizontal braking push block is connected to the friction plate to implement horizontal braking; the three-support-rod linkage mechanism includes a set of connecting rod assembly; the disc spring parking module includes a vertical slide, a disc spring, a horizontal braking push block hinge connecting rod, and a fork block; one end of the disc spring 1s connected to the vertical slide, the other end of the disc spring is connected to the horizontal braking push block hinge connecting rod, the disc spring applies an elastic force to the horizontal braking push block hinge connecting rod when the disc spring moves vertically on the vertical slide, and when braking needs to be released, the motor rotates to pull the nut downward, the disc spring is compressed in place, and the friction plate is released; the being compressed in place means that the horizontal braking push block hinge connecting rod moves to a position of the fork block, and the fork block fixes the horizontal braking push block hinge connecting rod to implement motor release.

Preferably, the three-support-rod linkage mechanism provided in the present invention mainly includes a nut hinge connecting rod, an upper housing hinge connecting rod, and the horizontal braking push block hinge connecting rod, the nut hinge connecting rod is hingedly connected to the nut, and there are three pendulum rod assemblies b between the nut hinge connecting rod and the horizontal braking push block hinge; the upper housing hinge connecting rod is hingedly connected to the housing, and there are three pendulum rod assemblies a between the upper housing hinge connecting rod and the horizontal

2 braking push block hinge; and the increased virtual constraints are capable of making movement more stable and making the bearing capacity stronger.

Preferably, the disc spring parking module provided in the present invention includes the horizontal braking push block hinge connecting rod, a fixed connecting rod, a parking housing, a magnet, an electromagnetic device, and the fork block, to provide functions of parking, braking release, and motor release; the parking housing is fixed to the housing through the fixed connecting rod; the magnet and the electromagnetic device are disposed in the parking housing; the electromagnetic device is an electromagnetic chuck, where based on the electromagnetic principle, an internal coil of the electromagnetic chuck is energized to generate a magnetic force, the magnetic force passes through a magnetic conductive panel to cause the electromagnetic chuck to tightly suck the magnet in contact with a surface of the panel, and when the coil 1s de-energized, the magnetic force disappears to implement demagnetization, and the magnet falls; the fork block is integrated with the magnet, and is disposed outside the parking housing; the parking means that the electromagnetic device does not work, the magnet is not sucked, the fork block does not intervene in movement, and in this case, the disc spring exerts an acting force to implement the braking, and the motor does not bear the force; the braking release means that the motor 1s running to release the braking, and the motor bears the force, to force the horizontal braking push block hinge connecting rod to overcome the acting force exerted by the disc spring; the motor release means that after the horizontal braking push block hinge connecting rod implements the braking in place, the electromagnetic device works, the magnet 1s sucked, the fork block is inserted into the horizontal braking push block hinge connecting rod to bear the force, and in this case, the fork block overcomes the acting force exerted by the disc spring, and the motor does not bear the force, to implement the motor release.

Preferably, the electromechanical braking module and the connecting rod braking assembly provided in the present invention jointly implement power conversion and braking in the 90-degree direction, and specific steps of the braking are as follows: step 1: in an initial position, a braking actuator is in a clasping and parking braking state, the pendulum rod assembly a is in a position at an initial pendulum rod angle, the disc 3 spring is in an initial state, and a disc spring support force causes a braking block to push the friction plate to implement the braking; step 2: when the braking is released, a braking object is running normally, the motor drives the speed reducer through the coupling a, and then drives the ball screw through the coupling b to rotate, the rotating ball screw implements vertical up-and-down movement of the nut hinge in the vertical slide through the nut, and in this case, the horizontal braking push block hinge connecting rod and the horizontal braking push block hinge cooperate to move by a braking stroke in a direction opposite to that of the braking, the pendulum rod assembly a moves to a position at a driving pendulum rod angle, the disc spring 1s in a forced state, and a braking force borne by the horizontal braking push block hinge connecting rod overcomes the disc spring support force, to implement the braking release; step 3: after the horizontal braking push block hinge connecting rod implements the braking in place, the electromagnetic device works, the magnet is sucked, the fork block is inserted into the horizontal braking push block hinge connecting rod to bear the force, and in this case, the fork block overcomes the acting force exerted by the disc spring, and the motor does not bear the force, to implement the motor release; and step 4: when the braking is required, the motor rotates to apply a braking force in a direction opposite to that of a motor braking force, to push the nut to move upward; and at the same time, the electromagnetic device is power-off, the magnet falls, the fork block exits from the horizontal braking push block hinge connecting rod, and in this case, the acting force exerted by the disc spring and an acting force of the motor work together to control horizontal movement of the horizontal braking push block, to implement braking control.

Compared with the prior art, beneficial effects of the present invention are that: setting of the disc spring implements the parking function, setting of the three-support-rod linkage mechanism increases virtual constraints of the mechanism, and improves bearing capacity of the mechanism and braking stability, setting of the electromechanical braking module implements braking release, setting of the fork block implements the motor release, and braking control conversion in a 90-degree direction improves space utilization. 4

BRIEF DESCRIPTION OF THE DRAWINGS To describe the technical solutions in embodiments of the present invention more clearly, the accompanying drawings required for describing the embodiments are briefly described below. Apparently, the accompanying drawings in the following description show merely some embodiments of the present invention, and a person of ordinary skill in the art may derive other drawings from these accompanying drawings without creative efforts. FIG. 1 1s a schematic diagram of an electromechanical braking structure based on disc spring parking according to the embodiments of the present invention; FIG. 2 is a diagram of a three-support-rod linkage mechanism according to the embodiments of the present invention; FIG. 3 1s a schematic diagram of disc spring parking and braking release according to the embodiments of the present invention; and FIG. 4 is a schematic diagram of motor release according to the embodiments of the present invention. In the figures, 1, motor; 2, coupling a; 3, speed reducer; 4, coupling b; 5, ball screw; 6, nut; 7, nut hinge; 8, vertical slide; 9, housing; 10, disc spring; 11, upper housing hinge; 12, pendulum rod assembly a; 13, horizontal braking push block hinge; 14, friction plate; 15, horizontal braking push block; 16, pendulum rod assembly b; F1, motor braking force; F2, horizontal braking push block thrust; a, initial pendulum rod angle; 6, driving pendulum rod angle; L, connecting rod length; S, braking stroke; S1, initial horizontal pendulum rod length; S2, driving horizontal pendulum rod length; d, driving stroke; F1, motor braking force; 101, initial disc spring state; 102, forced disc spring state; 70, nut hinge connecting rod; 110, upper housing hinge connecting rod; 130, horizontal braking push block hinge connecting rod; 131, fixed connecting rod; 132, parking housing; 133, magnet; 134, electromagnetic device; 135, fork block.

DETAILED DESCRIPTION To make the technical means, creative features, objectives and effects implemented by the present invention more comprehensible, the following further describes the present invention with reference to the accompanying drawings. 5

Referring to FIG. 1, an electromechanical braking method based on disc spring parking 1s provided, including an electromechanical braking module, a connecting rod braking assembly, and a disc spring parking module, where the electromechanical braking module includes a motor 1, a coupling a 2, a speed reducer 3, a coupling b 4, a ball screw 5, a nut 6, and a vertical slide 8; the motor 1 1s connected to the speed reducer 3 through the coupling a 2, and then 1s connected to the ball screw 5 through the coupling b 4; the ball screw 5 is converted from rotary motion to linear movement through the nut 6, and the nut 6 moves vertically up and down on the vertical slide 8; the connecting rod braking assembly includes a nut hinge 7, a housing 9, an upper housing hinge 11, a pendulum rod assembly a 12, a horizontal braking push block hinge 13, a friction plate 14, a horizontal braking push block 15, a pendulum rod assembly b 16, and a three-support-rod linkage mechanism; the pendulum rod assembly a 12 is fixed to the housing 9 through the upper housing hinge 11, and the pendulum rod assembly b 16 is hingedly connected to the nut 6 through the nut hinge 7; the pendulum rod assembly a 12 and the pendulum rod assembly b 16 are hingedly connected to the horizontal braking push block 15 through the horizontal braking push block hinge 13, and the horizontal braking push block 15 is connected to the friction plate 14 to implement horizontal braking; the three-support-rod linkage mechanism includes a set of connecting rod assembly; the disc spring parking module includes a vertical slide 8, a disc spring 10, a horizontal braking push block hinge connecting rod 130, and a fork block 135; one end of the disc spring 10 is connected to the vertical slide 8, the other end of the disc spring 10 is connected to the horizontal braking push block hinge connecting rod 130, the disc spring 10 applies an elastic force to the horizontal braking push block hinge connecting rod 130 when the disc spring 10 moves vertically on the vertical slide 8, and when braking needs to be released, the motor 1 rotates to pull the nut 6 downward, the disc spring 10 is compressed in place, and the friction plate 14 is released; the being compressed in place means that the horizontal braking push block hinge connecting rod 130 moves to a position of the fork block 135, and the fork block 135 fixes the horizontal braking push block hinge connecting rod 130 to implement motor release.

Referring to FIG. 1 and FIG. 2, the three-support-rod linkage mechanism mainly includes a nut hinge connecting rod 70, an upper housing hinge connecting rod 110, and the 6 horizontal braking push block hinge connecting rod 130, where the nut hinge connecting rod 70 1s hingedly connected to the nut 6, and there are three pendulum rod assemblies b 16 between the nut hinge connecting rod 70 and the horizontal braking push block hinge 13; the upper housing hinge connecting rod 110 is hingedly connected to the housing 9, and there are three pendulum rod assemblies a 12 between the upper housing hinge connecting rod 110 and the horizontal braking push block hinge 13; and the increased virtual constraints are capable of making movement more stable and making the bearing capacity stronger.

Referring to FIG. 1 and FIG. 3, the disc spring parking module includes the horizontal braking push block hinge connecting rod 130, a fixed connecting rod 131, a parking housing 132, a magnet 133, an electromagnetic device 134, and the fork block 135, to provide functions of parking, braking release, and motor release; the parking housing 132 is fixed to the housing 9 through the fixed connecting rod 131; the magnet 133 and the electromagnetic device 134 are disposed in the parking housing 13; the electromagnetic device 134 is an electromagnetic chuck, where based on the electromagnetic principle, an internal coil of the electromagnetic chuck is energized to generate a magnetic force, the magnetic force passes through a magnetic conductive panel to cause the electromagnetic chuck to tightly suck the magnet 133 in contact with a surface of the panel, and when the coil is de-energized, the magnetic force disappears to implement demagnetization, and the magnet 133 falls; the fork block 135 is integrated with the magnet 133, and is disposed outside the parking housing 132: the parking means that the electromagnetic device 134 does not work, the magnet 133 is not sucked, the fork block 135 does not intervene in movement, and in this case, the disc spring 10 exerts an acting force F3 to implement the braking, and the motor does not bear the force; the braking release means that the motor 1s running to release the braking, and the motor bears the force, to force the horizontal braking push block hinge connecting rod 130 to overcome the acting force F3 exerted by the disc spring 10; the motor release means that after the horizontal braking push block hinge connecting rod 130 implements the braking in place, the electromagnetic device 134 works, the magnet 133 is sucked, the fork block 135 is inserted into the horizontal braking push block hinge connecting rod 130 to bear the force, and in this case, the fork block 135

7 overcomes the acting force F3 exerted by the disc spring 10, and the motor does not bear the force, to implement the motor release.

Referring to FIG. 1, FIG. 2, FIG. 3, and FIG. 4, the electromechanical braking module and the connecting rod braking assembly jointly implement power conversion and braking S ina 90-degree direction, and specific steps of the braking are as follows: step 1: in an initial position, a braking actuator is in a clasping and parking braking state, the pendulum rod assembly a 12 is in a position at an initial pendulum rod angle a, the disc spring 10 is in an initial state 101, and a disc spring support force F3 causes a braking block 15 to push the friction plate 14 to implement the braking;

step 2: when the braking is released, a braking object is running normally, the motor 1 drives the speed reducer 3 through the coupling a 2, and then drives the ball screw 5 through the coupling b 4 to rotate, the rotating ball screw 5 implements vertical up-and-down movement of the nut hinge 7 in the vertical slide 8 through the nut 6, and mn this case, the horizontal braking push block hinge connecting rod 130 and the horizontal braking push block hinge 13 cooperate to move by a braking stroke S in a direction opposite to that of the braking, the pendulum rod assembly a 12 moves to a position at a driving pendulum rod angle $, the disc spring 10 is in a forced state 102, and a braking force borne by the horizontal braking push block hinge connecting rod 130 overcomes the disc spring support force F3, to implement the braking release;

step 3: after the horizontal braking push block hinge connecting rod 130 implements the braking in place, the electromagnetic device 134 works, the magnet 133 is sucked, the fork block 135 is inserted into the horizontal braking push block hinge connecting rod 130 to bear the force, and in this case, the fork block 135 overcomes the acting force F3 exerted by the disc spring 10, and the motor does not bear the force, to implement the motor release;

and step 4: when the braking is required, the motor rotates to apply a braking force in a direction opposite to that of a motor braking force F1, to push the nut 6 to move upward, and at the same time, the electromagnetic device 134 is power-off, the magnet 133 falls, the fork block 135 exits from the horizontal braking push block hinge connecting rod 130, and

1m this case, the acting force F3 exerted by the disc spring 10 and an acting force of the

8 motor work together to control horizontal movement of the horizontal braking push block 15, to implement braking control. Specifically, the pendulum rod assembly b 16 and the pendulum rod assembly a 12 of the three-support-rod linkage mechanism are equal in length. Therefore, a relationship between a horizontal braking push block thrust F2 and the motor braking force Fl and a relationship among the braking stroke S, a connecting rod length L, and a pendulum rod angle are as follows: F,=2tana F, S§=S§,—-5; =L- Lsina It can be seen that on the basis of electromechanical deceleration and torque-increasing braking, the three-support-rod linkage mechanism implements braking multiplying power of 2tana .

It 1s apparent to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention may be implemented in other specific embodiments without departing from the spirit or essential characteristics of the present invention. Therefore, from any point of view, the embodiments should be considered as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above descriptions. Therefore, all changes falling within the meaning and scope of equivalents of the claims are included in the present invention. Any reference signs in the claims shall not be construed as limiting the claims.

In addition, 1t should be understood that, although this specification 1s described according to implementations, each implementation may not include only one independent technical solution. The description manner of this specification 1s merely for clarity. This specification should be considered as a whole by a person skilled m the art, and the technical solutions in the embodiments may also be properly combined, to form other implementations that can be understood by the person skilled in the art.

9

Claims

Conclusions

1. A method of disc-spring-parking based sickromechanical braking, characterized by comprising an electromechanical brake pulse, and clutch brake master. and a disc spring parking module; the method includes a motor, a coupling a, a reducer, a coupling by, a ball screw, a nut and a vertical slide; the motor described above is connected to the reducer via the coupling a and then connected to the ball screw via the coupling b; the above ball screw realizes the conversion from the rotational movement to the linear movement through the nut, and the nut extends vertically up and down the vertical slide; said clutch brake assembly includes a nut pivot, a housing, an upper housing pivot, a pivot rod assembly a, a horizontal brake pressure pad pivot, a friction plate, a horizontal brake pressure pad, a swing rod assembly hb, and three auxiliary hose couplings, a swing rod assembly hinge a is attached to the housing by an upper housing pivot , and the pivot rod assembly bis hingedly connected to the nut by a nut hinge; the pivot rod assembly a and the pivot rod assembly b are pivotally connected to the horizontal brake pressure pad by a horizontal brake pressure pad pivot, and the horizontal brake pressure pad is connected to the friction plate to achieve horizontal braking; the three-prong support clutch mechanism includes a set of connecting rod assembly; said disc spring marker module includes a vertical slide, a disc spring, a horizontal pivot of a brake pressure block and a pig block; the disc spring is connected to a vertical slide at one end and a horizontal hinge of the push block at one end, the hose exerts an elastic force on the hinge joint of the horizontal brake pressure block as it moves vertically on the slide, when the brake needs to be released , the motor turns down to pull the nut, the disc spring is compressed and the friction plate is released; the compression in position means that the pivot link of the horizontal brake pressure pad moves to the fork block position, and the fork block fixes the pivot link of the horizontal brake pressure pad to realize the motor release; The parking function is realized by the arrangement of the butterfly spring, the arrangement of the three-pin support clutch mechanism increases the virtual limitation of the mechanism, improves the mechanism's carrying capacity and the braking stability, and realizes the brake release by the adjustment of the electromechanical braking module, the release of the motor is achieved by the pig block setting, and the brake control conversion in the 90 degree direction improves the use of space.

The disc spring parking method according to claim 1, characterized by: the three support bar coupling mechanism mainly consists of a nut hinge connection, a top hinge connection of the housing and a horizontal hinge connection of the brake pressure block, and the moss hinge connection and the connection. of the nut hinge and the horizontal hinge of the brake pressure biok, 3 pendulum assemblies b are between; the top housing hinge joint and the housing hinge are interconnected, and there are three pivot bar assemblies between the horizontal hinge lock block hinges; the increased virtual restriction can make the movement more stable and increase the carrying capacity,

The disc spring parking based method according to claim 1, characterized by: said disc spring marking module comprises a horizontal brake pressure block pivot link, a fixed link, a parking shell, a magnet, an electromagnetic device and a fork block, and functions for parking, brake release and motor release; with the fixed coupling the parking sheath is attached to the housing; a magnet and sensing magnetic device are disposed in the designated parking shell; The electromagnetic device is an electromagnetic chuck, and based on the electromagnetic principle, a magnetic force is generated by energizing the internal coil, and the magnet contacting the surface of the panel is pulled tight by the magnetic conductive panel, and the magnetic force is lost by the coil and the magnetic force is demagnetized, remove the magnet; the fork block Is zemigrated with the magnet and placed outside the parking box; parking means that the electromagnetic device does not move, the magnet is not sucked up and the fork block does not engage and the disc spring applies a force to brake, and the motor is not forced; said brake release means that the motor rotates to release the brake, and the motor is subjected to the force, forcing the horizontal brake pivot link to overcome the force applied by the disc spring; said motor release means that after the hinge link of the horizontal brake pressure pad is pressed into place, the electromagnetic device is activated, the magnet is sucked up and the fork block is inserted into the pivot link of the horizontal brake pressure pad and the fork is blocked by the fork block , overcome the force applied by the disc spring, the motor is unloaded and the motor is released.

The disc spring parking method according to claim 1, characterized by: the electromechanical brake module and the clutch brake assembly jointly realize power conversion and braking in a 90 degree direction, and the specific braking steps are as follows: step 1: is in the starting position the brake actuator is in the parking brake hold position! the swing lever assembly a is in the initial angular position of the swing bar, the disc spring is in the initial position of the butterfly spring and the disc spring bearing force causes the brake pad to press the friction plate; step 2: when the brake is released, the braking object runs normally, the motor drives the reducer through the clutch a, then the ball screw is driven to rotate through the clutch B, the rotating ball screw realizes the nut hinge in the vertical slide through the nut , moving vertically up and down, at this time, the horizontal brake pressure pad pivot joint there, the horizontal brake pressure pad pivot cooperate to move the brake stroke in the opposite direction of the brake, and the swing lever assembly a moves to the swing lever drive angle position, the disc spring in the forced state of the butterfly spring overcomes the braking force on the horizontal brake pressure block pivot joint the support force of the disc spring to realize the brake release; Step 3: After the horizontal pivot link of the brake pressure pad is braked in place, the electromagnetic device works, the magnet is sucked, and the fork bock is inserted into the horizontal pivot link of the brake pressure pad, and the fork block overcomes the disc spring, the force applied, the motor is not forced, so that the engine release is realized; step 4: when braking is required, the motor rotates to apply the braking force of the electric mechanism in the opposite direction to push the nut up, at the same time, the electromagnetic device loses its power, the magnet drops out and the fork body leaves the horizontal pivot link of the brake pressure pad, the force exerted by the disc spring cooperates with the motor force to control the horizontal movement of the horizontal brake pressure pad to apply braking action,

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