CN114572166B - Braking device integrating running braking and parking braking and vehicle - Google Patents
Braking device integrating running braking and parking braking and vehicle Download PDFInfo
- Publication number
- CN114572166B CN114572166B CN202210462110.4A CN202210462110A CN114572166B CN 114572166 B CN114572166 B CN 114572166B CN 202210462110 A CN202210462110 A CN 202210462110A CN 114572166 B CN114572166 B CN 114572166B
- Authority
- CN
- China
- Prior art keywords
- brake
- assembly
- parking
- braking
- service
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
A brake device, vehicle of integrated service and parking brake, brake device includes: service brake mechanism and parking brake mechanism, service brake mechanism includes: the driving transmission assembly comprises a driving assembly, a driving transmission assembly and a driving braking assembly; the parking brake mechanism includes: a parking drive assembly and a parking brake assembly. The service brake component can brake the brake disc body, so that the running vehicle body is decelerated and stopped; the parking brake assembly brakes the service transmission assembly, so that when the vehicle body needs to be braked for a long time but cannot stop running, or when the vehicle body needs to be braked for a long time, the vehicle body is subjected to auxiliary braking. Therefore, the braking device integrating the service braking and the parking braking is formed, the structure is simple and compact, the occupied space can be effectively saved, and the use safety can be effectively improved.
Description
Technical Field
The invention relates to the technical field of vehicle braking devices, in particular to a braking device integrating running and parking braking and a vehicle.
Background
Vehicle brake systems usually include two functions, namely a service brake function and a parking brake function, and the following three ways are generally adopted for realizing the two functions:
firstly, service braking and parking braking of a vehicle are respectively completed through two sets of systems, so that the vehicle braking system is complex in structure, low in integration level and large in occupied space.
The automobile realizes the long-time parking braking function of the automobile by controlling the locked rotor of the motor, but the motor is easy to generate heat, and the service life of the motor is greatly influenced.
And thirdly, the parking braking function of the vehicle is completed by adopting self-locking mechanisms such as worm gears and worms, however, the self-locking mechanism has lower transmission efficiency, and the braking cannot be immediately released when the motor fails, so that the safety problem exists.
Disclosure of Invention
The invention mainly solves the technical problem of providing a braking device integrating running and parking braking and a vehicle, realizes the function of parking braking for a long time in a mode of braking a running transmission assembly through a parking braking assembly, and has the advantages of high integration level, simple structure, small occupied space and high safety.
According to a first aspect of the present application, there is provided a service and parking brake integrated brake device comprising:
service brake mechanism, including: the driving transmission assembly comprises a driving assembly, a driving transmission assembly and a driving braking assembly; the driving transmission assembly is connected to the power output end of the driving assembly, and the driving braking assembly is connected with the driving transmission assembly; the service driving assembly is used for driving the service braking assembly to switch between a first braking position and a first release position through the service transmission assembly; in the first braking position, the service braking assembly is used for braking a brake disc body of the vehicle body; in the first release position, the service brake assembly is used for releasing the brake of the brake disc body of the vehicle body;
a parking brake mechanism comprising: the parking brake device comprises a parking driving assembly and a parking brake assembly, wherein the parking driving assembly is used for driving the parking brake assembly to switch between a second brake position and a second release position; in the second braking position, the parking brake assembly brakes the service transmission assembly; in the second release position, the parking brake assembly releases the brake to the service transmission assembly.
In one embodiment of the present invention, the substrate is,
in the first braking position, the service driving assembly enables the service braking assembly to generate a first braking force through the service transmission assembly;
when the vehicle body is braked for a long time but does not stop running, the service brake assembly at the first brake position generates a first brake force, and the parking brake assembly is at the second brake position.
In one embodiment of the present invention, the substrate is,
in the first braking position, the service driving assembly enables the service braking assembly to generate a second braking force through the service transmission assembly, and the second braking force is larger than the first braking force;
when the vehicle body stops running in the process of long-time braking but not stopping running, the service brake assembly in the first brake position generates a second braking force, and the parking brake assembly is in the second brake position.
In one embodiment of the present invention, the substrate is,
when the vehicle body is braked for a long time and stops running, the service brake assembly in the first brake position generates a second brake force, and the parking brake assembly is in the second brake position.
In one embodiment, the service braking mechanism further comprises: the moment output adjusting module is connected with the driving assembly and used for adjusting and controlling the driving assembly to output a first output moment or a second output moment so as to drive the driving brake assembly to output a first braking force or a second braking force through the driving transmission assembly.
In one embodiment, the service braking mechanism further comprises: reserve driving drive assembly, reserve driving drive assembly with the driving transmission subassembly is connected, reserve driving drive assembly is used for passing through driving transmission subassembly drive the driving braking subassembly switches between first braking position and first position of relieving.
In one embodiment of the present invention, the substrate is,
the driving transmission assembly comprises: a planetary gear unit and a ball screw unit, the planetary gear unit including: a sun gear, a planet gear, a ring gear, and a planet carrier; the planet wheels are distributed along the periphery of the sun wheel and are meshed with the sun wheel; the gear ring is provided with an inner gear ring arranged along the circumferential surface of the inner ring and a friction surface arranged along the circumferential surface of the outer ring, and the inner gear ring is meshed with the planet gear; the planet wheel is arranged on the planet carrier, and the planet carrier is kept still; the travelling crane driving assembly is connected with the planet wheel; the ball screw unit includes: a ball screw and a nut screwed to the ball screw, the nut being held stationary in a circumferential direction; the ball with the sun gear is connected, the nut with service brake subassembly is connected, service brake subassembly includes: a running friction member;
the driving component is used for driving the planet wheel to rotate, the sun wheel drives the ball screw to rotate, and the nut outputs linear motion along the axial lead direction of the ball screw so as to drive the driving friction piece to switch between a first braking position and a first release position; in the first braking position, the driving friction piece is contacted with the brake disc body of the vehicle body and generates friction force with the brake disc body so as to brake the brake disc body; in the first release position, the driving friction piece is far away from the brake disc body of the vehicle body so as to release the brake of the brake disc body;
the parking brake assembly includes: a parking friction member that contacts the friction surface to generate a frictional force against the friction surface in the second braking position, thereby braking the ring gear; in the second release position, the friction member is away from the friction surface, thereby releasing the braking of the ring gear.
In one embodiment of the present invention, the substrate is,
the driving transmission assembly comprises: a planetary gear unit and a ball screw unit, the planetary gear unit including: a sun gear, a planet gear, a ring gear, and a planet carrier; the planet gears are distributed along the periphery of the sun gear, and the sun gear is meshed with the planet gears; the gear ring is provided with an inner gear section arranged along the circumferential direction of an inner ring of the gear ring and an inner ring friction section arranged along the circumferential direction of the inner ring of the gear ring; the inner tooth section is meshed with the planet wheel; the planet wheel is arranged on the planet carrier, and the planet carrier is kept still; the travelling crane driving assembly is connected with the planet wheel; the ball screw unit includes: a ball screw and a nut screwed to the ball screw, the nut being held stationary in a circumferential direction; the ball with the sun gear is connected, the nut with service brake subassembly is connected, service brake subassembly includes: a running friction member;
the inner tooth segment has a first end and a second end; the traveling crane driving assembly drives the planet wheel to rotate so as to drive the ball screw to rotate through the sun wheel, and the nut outputs linear motion along the axial lead direction of the ball screw; when the planet wheel is meshed with the first end of the inner tooth section, the nut drives the service friction piece to be switched to the first braking position, the service friction piece is in contact with a brake disc body of the vehicle body, and friction force is generated between the service friction piece and the brake disc body so as to brake the brake disc body; when the planet wheel is meshed with the second end of the inner tooth section, the nut drives the driving friction piece to be switched to the first release position, and the driving friction piece is far away from a brake disc body of the vehicle body so as to release braking on the brake disc body;
the parking brake assembly includes: the parking friction piece is in contact with the inner ring friction section in the second braking position to generate friction force on the inner ring friction section so as to brake the gear ring; in the second release position, the parking friction piece is far away from the inner ring friction section, so that the brake on the gear ring is released.
In one embodiment, the parking drive assembly includes: the parking device comprises a parking driving motor, a parking transmission screw rod and a parking transmission nut; the parking driving motor is connected with the parking transmission screw rod, the parking transmission nut is in threaded connection with the parking transmission screw rod, and the parking friction piece is connected with the parking transmission nut; the parking driving motor is used for driving the parking transmission screw rod to rotate around the axis line of the parking transmission screw rod, the parking transmission nut can be switched between a first position and a second position along the axis line direction of the parking transmission screw rod, the parking friction piece is located at the second braking position at the first position, and the parking friction piece is located at the second releasing position at the second position.
According to a second aspect of the present application, there is provided a vehicle comprising: the braking device integrating the running brake and the parking brake; further comprising: a vehicle body having a brake disc body.
According to the braking device integrating the service braking and the parking braking, the service braking component can brake the brake disc body, so that the running vehicle body is decelerated and stopped; the parking brake assembly brakes the service transmission assembly, so that when the vehicle body needs to be braked for a long time but cannot stop running, or when the vehicle body needs to be braked for a long time, the vehicle body is subjected to auxiliary braking. Therefore, the braking device integrating the service braking and the parking braking is formed, the structure is simple and compact, the occupied space can be effectively saved, and the use safety can be effectively improved.
Drawings
FIG. 1 is a schematic structural view of an integrated service and parking brake braking device provided by the present application in one embodiment;
FIG. 2 is a schematic structural diagram of an integrated service and parking brake braking device provided by the present application in another embodiment;
FIG. 3 is a cross-sectional view of the integrated service and parking brake actuation device provided herein;
FIG. 4 is a perspective view of a service transmission assembly in the integrated service and parking brake braking device provided herein.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the described features, operations, or characteristics may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
The application provides a braking device integrating running and parking braking and a vehicle, wherein the braking device integrating the running and parking braking comprises the running braking and the parking braking, in the running braking, a running driving assembly drives a running braking assembly to switch between a first braking position and a first release position through a running transmission assembly, and at the first braking position, the running braking assembly brakes a brake disc body of a vehicle body, so that the running vehicle body can be decelerated and stopped; in the first release position, the service brake assembly releases the brake on the brake disc body. In the parking braking, the parking driving assembly drives the parking braking assembly to switch between a second braking position and a second release position, and in the second braking position, the service braking assembly brakes the service transmission assembly, so that the vehicle body is subjected to auxiliary braking when the vehicle body needs to be braked for a long time but cannot stop running or when the vehicle body needs to be braked for a long time; in the second release position, the service brake assembly releases the brake to the service transmission assembly.
In the application, the service brake assembly and the parking brake assembly can be friction assemblies which can increase friction force to braked objects (a brake disc body and a service transmission assembly) through a single friction assembly, or can be brake calipers with two brake pads, or one of the brake calipers adopts a friction assembly and the other adopts a brake caliper. In the following embodiments, both the service brake unit and the parking brake unit will be described by taking a friction unit capable of increasing a friction force to a brake object as an example.
The first embodiment,
The present embodiment provides a brake device integrating service and parking brakes, as shown in fig. 1 and 2, the brake device including: a service brake mechanism 10 and a parking brake mechanism 20.
The service brake mechanism 10 includes: a service drive assembly 11, a service transmission assembly 12 and a service brake assembly 13. The driving component 11 is provided with a power output end capable of outputting power, the driving transmission component 12 is connected to the power output end of the driving component 11, and the driving braking component 13 is connected with the driving transmission component 12. The service drive assembly 11 is used for driving the service brake assembly 13 to switch between the first braking position a and the first release position B through the service transmission assembly 12. In the first braking position a, the service brake assembly 12 is used to brake the brake disc body of the vehicle body. In the first release position B, the service brake assembly 12 is used to release braking of the brake disc body of the vehicle body.
In this embodiment, the service brake assembly 13 may be implemented as a single friction assembly that adds friction to the brake disc body of the vehicle body, which may be a brake pad, for example. In the first brake position a, the brake pads contact the brake disc body of the vehicle body and generate friction force to the brake disc body, thereby braking the brake disc body. In the first release position B, the brake pad is far away from the brake disc body, so that the brake on the brake disc body is released. It is understood that the magnitude of the braking force of the brake to the brake disc body is relatively varied, for example, the braking force when the vehicle body is in a running state and needs to be decelerated is smaller than the braking force when the vehicle body is shifted from the running state to a stop running. The direction AB indicated by the double-headed arrow in fig. 1 is only used to indicate the direction of movement of the service brake assembly 13 in the first braking position a and the direction of movement of the service brake assembly 13 in the first release position B.
Of course, in other embodiments, the service brake assembly 13 can also be implemented by increasing the friction force of the brake caliper on the brake disc body.
The parking brake mechanism 20 includes: a parking drive assembly 21 and a parking brake assembly 22, the parking drive assembly 21 being used for driving the parking brake assembly 22 to switch between a second braking position C and a second release position D. In the second braking position C, the parking brake assembly 22 brakes the service transmission assembly 12. In the second release position D, the parking brake assembly 22 releases the brake to the service transmission assembly 12.
In this embodiment, two parking brake mechanisms 20 are provided, and the two parking brake mechanisms 20 are symmetrically disposed on two sides of the service transmission assembly 12, in other words, the parking brake assembly 22 brakes two relative positions of the service transmission assembly 12, so that the braking can be balanced effectively, and the stability of the braking force can be ensured.
In this embodiment, the parking brake assembly 22 may also be implemented using a single friction assembly that adds friction to the service drive assembly, which may also be a brake pad, for example. In the second braking position C, as shown in fig. 1, the brake pads contact the service transmission assembly 12 and generate friction against the service transmission assembly 12, thereby braking the service transmission assembly 12. In the second release position D, the brake pads are spaced from the service transmission assembly 12, as shown in fig. 2, thereby releasing the brake from the service transmission assembly 12. In this embodiment, the magnitude of the braking force when the parking brake assembly 22 is actuated in the second braking position C by the parking actuation assembly 21 is constant. The direction of the CD indicated by the double-headed arrow in FIG. 1 is intended to represent the direction of movement of the parking brake assembly 22 in the second braking position C and the direction of movement of the parking brake assembly 22 in the second release position D only.
Of course, in other embodiments, the parking brake assembly 22 may also be implemented in a manner that increases the friction of the brake caliper against the service transmission assembly 12.
In some embodiments, one of the service brake assembly 13 and the parking brake assembly 22 may employ a single friction assembly (e.g., a brake pad) that is capable of increasing friction to the object being braked (the disc body or the service drive assembly 13), and the other may employ a brake caliper.
In the application, when the vehicle body is switched from a high-speed running state to a low-speed running state in a normal running process, the driving component 11 drives the driving brake component 13 to be at the first brake position a through the driving transmission component 12, and applies friction force to the brake disc body to generate braking force, so as to perform braking, wherein the braking force is large enough to decelerate the vehicle body, for example, the deceleration of the vehicle body from 50km/h to 40 km/h. When the vehicle body is switched from a running state to a stopping state, the service driving assembly 11 drives the service braking assembly 13 to be at the first braking position a through the service transmission assembly 12, and applies friction force to the brake disc body to generate braking force, so as to perform braking, wherein the braking force is large enough to stop the running state of the vehicle body, for example, the vehicle body is decelerated from 25km/h to 0 km/h. When the vehicle body needs to stop running (parking) in time, the running driving assembly 11 drives the running braking assembly 13 to be in a first braking position through the running transmission assembly 12, applies friction force to the brake disc body to generate braking force, and then brakes, wherein the braking force can be ensured to be switched from a running state to a stopping state by the vehicle body, and the brake disc body kept in the stopping state cannot rotate along with the rotation of the wheel body of the vehicle body. When the vehicle body stops running, the parking driving component 21 drives the parking braking component 22 to be at the second braking position C, friction force is applied to the service transmission component 12 to generate braking force, and then braking is performed, wherein the magnitude of the braking force can ensure that the service transmission component 12 is always in a stop working state in any state, and the purpose of auxiliary braking of the service transmission component 12 is achieved through the parking braking component 22. Compared with the conventional mode of motor stalling, the safety can be effectively improved. Therefore, the braking device integrating the service braking and the parking braking is formed, the structure is simple and compact, the occupied space can be effectively saved, and the use safety can be effectively improved.
When the service brake assembly 13 is in the first braking position a, the service drive assembly 11 enables the service brake assembly 13 to generate a first braking force through the service transmission assembly 12. When the vehicle body is braked for a long time but does not stop running (for example, the vehicle body runs down a slope), the service brake assembly 13 in the first brake position a generates a first braking force, and the parking brake assembly 22 is in the second brake position C. It can be understood that the magnitude of the first braking force can ensure that the brake disc body of the vehicle body is not completely braked and can also ensure that the vehicle body is in a low-speed running state. The first braking force is controlled by the service driving assembly 11, and the service transmission assembly 12 can be kept in a state that the service braking assembly 13 generates the first braking force through the action of the parking braking assembly 22 on the service transmission assembly 12, and the service braking assembly 13 can be kept in a state that the service braking assembly 13 generates the first braking force on the premise that the service driving assembly 11 is not driven.
The first braking force is determined based on an initial traveling speed (speed when entering a slope) and a final traveling speed (speed to be maintained on the slope) which are required when the vehicle body performs long-time braking without stopping traveling, and ideally, if no other vehicle is present on the slope, the final traveling speed is maintained, and the magnitude of the force for switching the first braking force to the final traveling speed from the initial traveling speed is also maintained. If the road condition of the ramp is complex, and the termination speed of the vehicle body in the driving process is changed, correspondingly, the first braking force is in a changed state.
Of course, if the end-of-travel speed is maintained, the service brake assembly 13 may be in the first release position B immediately or after a predetermined time (e.g., 5 s) to release the brake from the disc rotor body while the parking brake assembly 22 in the second brake position C maintains the service brake assembly 13 generating the first braking force. If the speed at which the vehicle is stopped is changed, the parking brake assembly 22 in the second brake position C keeps the first braking force generated by the service brake assembly 13 changed, so that if a larger speed at which the vehicle is stopped is required at present, the service driving assembly 11 drives the service brake assembly 13 through the service transmission assembly 12, and the braking force generated by the parking brake assembly 22 in the second brake position C on the service transmission assembly 12 needs to be overcome.
When the service brake assembly 13 is in the first brake position a, the service drive assembly 11 enables the service brake assembly 13 to generate a second brake force through the service transmission assembly 12, and the magnitude of the second brake force is greater than that of the first brake force. During long-term braking without stopping of the vehicle body, the service brake assembly 13 in the first brake position a generates the second braking force and the parking brake assembly 22 is in the second brake position C in order to enable the vehicle body to stop running (for example, when the vehicle body needs to stop running during a long downhill). It will be appreciated that the magnitude of this second braking force is such as to ensure that the brake disc body of the vehicle body is fully braked. The second braking force is also controlled by the service driving assembly 11, and the service transmission assembly 12 can be kept in a state that the service braking assembly 13 generates the second braking force through the action of the parking braking assembly 22 on the service transmission assembly 12, and similarly, the service braking assembly 13 can be kept in a state that the service braking assembly 13 generates the second braking force on the premise that the service driving assembly 11 is not driven.
It is understood that, when the vehicle body is braking for a long time but not stopping running, in order to stop running, the service driving assembly 11 drives the service braking assembly 13 through the service transmission assembly 12, the braking force generated by the parking braking assembly 22 in the second braking position C on the service transmission assembly 12 needs to be overcome, so that the service braking assembly 13 generates the second braking force on the brake disc body.
When the vehicle body is braked for a long time and stops running, the service brake assembly 13 at the first brake position A generates a second brake force to brake the brake disc body and keep the brake disc body not to rotate along with the rotation of the wheels of the vehicle body. And, the parking brake assembly 22 is in the second braking position C to apply the brakes to the service transmission assembly 12.
Of course, the service brake assembly 13 may be in the first release position B immediately or after a preset time (e.g., 5 s) to release the brake from the disc brake body while the parking brake assembly 22 in the second braking position C holds the service brake assembly 13 generating the second braking force. Alternatively, the service brake assembly 13 is always in the first braking position a when the parking brake assembly 22 in the second braking position C keeps the service brake assembly 13 generating the second braking force.
In this embodiment, the service braking mechanism 10 further includes: the moment output adjusting module is connected with the driving assembly 11, the driving assembly 11 can output moment, and the moment can drive the driving braking assembly to output a first braking force or a second braking force through the driving transmission assembly 12 respectively. Specifically, the torque output adjusting module is used for adjusting and controlling the driving assembly 11 to output a first output torque or a second output torque, and when the torque output adjusting module adjusts and controls the driving assembly 11 to output the first output torque, the driving transmission assembly 12 drives the driving brake assembly 13 to output a first braking force; when the torque output adjusting module adjusts and controls the service driving assembly 11 to output the second output torque, the service driving assembly 12 drives the service braking assembly 13 to output the second braking force.
As shown in fig. 1 and 2, the service brake mechanism 10 further includes: a spare service drive assembly 14, the spare service drive assembly 14 is connected with the service transmission assembly 12, and the spare service drive assembly 14 is used for driving the service brake assembly 13 to switch between the first brake position A and the first release position B through the service transmission assembly 12. Through the arrangement of the standby driving assembly 14, the service brake mechanism 10 can be continuously kept to work under the condition that the service driving assembly 13 fails to work, so that the redundant backup of the service driving assembly 11 is formed, and the running safety of the vehicle body is improved.
In one embodiment, as shown in fig. 1 and 2, the service drive assembly 12 includes: a planetary gear unit 121 and a ball screw unit 122, as shown in fig. 3 and 4, the planetary gear unit 121 includes: sun 1211, planet wheels 1212, ring gear 1213, and a planet carrier (not shown). In the present embodiment, three planetary gears 1212 are provided, all of the planetary gears 1212 are arranged along the outer periphery of the sun gear 1211, and each planetary gear 1212 is meshed with the sun gear 1211. The gear ring 1213 has an annular structure, and the gear ring 1213 has an inner gear ring provided along the inner circumferential surface thereof and a friction surface provided along the outer circumferential surface thereof, the inner gear ring being engaged with the planetary gear 1212. Each planet 1212 is mounted on a planet carrier, which remains stationary. The traveling crane drive assembly 11 is connected with the planet wheels 1212. As mentioned above, the driving assembly 11 and the spare driving assembly 14 are respectively connected to the two planet wheels 1212, and both the driving assembly 11 and the spare driving assembly 14 are servo motors. As shown in fig. 3, the ball screw unit 122 includes: a ball screw 1221 and a nut 1222, the nut 1222 being screwed on the ball screw 1221, and the nut 1222 being held stationary in the circumferential direction. The ball screw 1221 is connected to the sun gear 1211, the nut 1222 is connected to the service brake assembly 13, and the service brake assembly 13 includes: driving friction piece.
In this embodiment, a transmission shaft 15 is further provided on the sun gear 1211, and the transmission shaft 15 is connected to one end of the ball screw 1211 through a coupling.
The traveling crane driving assembly 11 drives the planet gear 1212 to rotate, the rotating planet gear 1212 drives the sun gear 1211 to rotate, the ball screw 1221 is driven to rotate through the sun gear 1211, and the nut 1222 converts the rotating motion of the ball screw 1221 into a linear motion along the axial lead direction (length direction) of the ball screw 1221, so as to drive the traveling crane friction member to switch between the first braking position a and the first release position B. In the first braking position A, the driving friction piece contacts the brake disc body of the vehicle body and generates friction force with the brake disc body so as to brake the brake disc body. In the first release position B, the driving friction piece is far away from the brake disc body of the vehicle body so as to release the brake of the brake disc body.
The parking brake assembly 22 includes: and a parking friction member that, in the second brake position C, contacts a friction surface provided on the outer peripheral surface of the ring gear 1213 to generate a frictional force against the friction surface, thereby braking the ring gear 1213 and thus braking the service transmission assembly 12. In the second release position D, the friction element is moved away from the friction surface, so that the brake on the ring gear 1213 and thus on the service transmission assembly 12 is released.
In another embodiment, the travel drive assembly 12 includes: a planetary gear unit 121 and a ball screw unit 122, the planetary gear unit 121 including: sun gear 1211, planet gears 1212, ring gear 1213, and a planet carrier. In the present exemplary embodiment, three planet wheels 1212 are likewise provided, all planet wheels 1212 running along the periphery of the sun wheel 1211, and the sun wheel 1211 meshes with the planet wheels 1212. The ring gear 1213 has an inner tooth section provided along the circumferential direction of its inner ring, which meshes with the planetary gear 1212, and an inner ring friction section provided along the circumferential direction of its inner ring. Each planet 1212 is mounted on a planet carrier, which also remains stationary. The traveling crane drive assembly 11 is connected with the planet wheels 1212. The ball screw unit 122 includes: a ball screw 1221 and a nut 1222, the nut 1222 is screwed on the ball screw 1221, and the nut 1222 is held stationary in the circumferential direction. The ball screw 1221 is connected to the sun gear 1212, the nut 1222 is connected to the service brake assembly 13, and the service brake assembly 13 also includes: driving friction piece.
In the above embodiment, the inner tooth segment has a first end and a second end. The planetary drive assembly 11 drives the planetary gear 1212 to rotate so as to drive the ball screw 1221 to rotate through the sun gear 1211, and the nut 1222 outputs a linear motion along the axial lead direction of the ball screw 1221. When planet wheel 1212 meshes to the first end of internal tooth section, nut 1222 drive service friction spare switches to first braking position A, and service friction spare contact vehicle body's brake disc body produces frictional force with the brake disc body to brake the brake disc body. When planet wheel 1212 meshes to the second end of internal tooth section, nut 1222 drives the driving friction piece and switches to first position B of removing, and the driving friction piece is kept away from the brake disc body of vehicle body to remove the braking to the brake disc body.
The parking brake assembly 22 includes: and the parking friction piece is in contact with the inner ring friction section at the second braking position C so as to generate friction force on the inner ring friction section, so that the gear ring 1213 is braked, and the service transmission assembly 12 is braked. In the second release position D, the parking friction element is moved away from the inner ring friction segment, so that the brake on the ring gear 1213 and thus on the service transmission assembly 12 is released.
In the present embodiment, the parking drive assembly 21 includes: parking drive motor 211, parking drive screw 212, and parking drive nut 213. Parking drive motor 211 is connected with parking transmission lead screw 212, and parking transmission nut 213 spiro union is in parking transmission lead screw 212, and parking friction spare is connected with parking transmission nut 213. The parking driving motor 211 is used for driving the parking transmission screw rod 212 to rotate around the axis line of the parking transmission screw rod 212, the parking transmission nut 213 converts the rotating motion of the parking transmission screw rod 212 around the axis line of the parking transmission screw rod 212 into linear motion which is switched between a first position and a second position along the axis line direction of the parking transmission screw rod 212, in the first position, the parking friction piece is located at a second braking position C, the parking friction piece is in contact with an inner ring friction section to generate friction force on the inner ring friction section, so that the gear ring 1213 is braked, and braking on the traveling transmission assembly 12 is further achieved. In the second position, the parking friction member is in the second release position D, and the parking friction member is away from the inner ring friction section, thereby releasing the brake on the gear ring 1213 and further releasing the brake on the service transmission assembly 12.
In the above embodiment, the parking friction member may apply a frictional force to the inner circumferential surface and the outer circumferential surface of the ring gear 1213 to exert a braking action on the ring gear 1213.
Example II,
The embodiment provides a vehicle, including: embodiment one described brake device integrating a service brake and a parking brake, all functions and features of which have been described in detail in the above embodiments, will not be described again. The vehicle further includes: the vehicle body is provided with a brake disc body.
In summary, in the braking device and the vehicle integrating the service braking and the parking braking provided by the application, the service braking component can brake the brake disc body, so that the vehicle body in running is decelerated and stopped; the parking brake assembly brakes the service transmission assembly, so that when the vehicle body needs to be braked for a long time but cannot stop running, or when the vehicle body needs to be braked for a long time, the vehicle body is subjected to auxiliary braking. Therefore, the braking device integrating the service braking and the parking braking is formed, the structure is simple and compact, the occupied space can be effectively saved, and the use safety can be effectively improved.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (8)
1. An integrated service and parking brake apparatus, comprising:
service brake mechanism, including: the driving transmission assembly comprises a driving assembly, a driving transmission assembly and a driving braking assembly; the driving transmission assembly is connected to the power output end of the driving assembly, and the driving braking assembly is connected with the driving transmission assembly; the service driving assembly is used for driving the service braking assembly to switch between a first braking position and a first release position through the service transmission assembly; in the first braking position, the service braking assembly is used for braking a brake disc body of the vehicle body; in the first release position, the service brake assembly is used for releasing the brake of the brake disc body of the vehicle body;
a parking brake mechanism comprising: the parking brake device comprises a parking driving assembly and a parking brake assembly, wherein the parking driving assembly is used for driving the parking brake assembly to switch between a second brake position and a second release position; in the second braking position, the parking brake assembly brakes the service transmission assembly; in the second release position, the parking brake assembly releases the brake to the service transmission assembly;
the driving transmission assembly comprises: a planetary gear unit and a ball screw unit, the planetary gear unit including: a sun gear, a planet gear, a ring gear, and a planet carrier; the planet gears are distributed along the periphery of the sun gear, and the sun gear is meshed with the planet gears; the gear ring is provided with an inner gear section arranged along the circumferential direction of an inner ring of the gear ring and an inner ring friction section arranged along the circumferential direction of the inner ring of the gear ring; the inner tooth section is meshed with the planet wheel; the planet wheel is arranged on the planet carrier, and the planet carrier is kept still; the travelling crane driving assembly is connected with the planet wheel; the ball screw unit includes: a ball screw and a nut screwed to the ball screw, the nut being held stationary in a circumferential direction; the ball with the sun gear is connected, the nut with service brake subassembly is connected, service brake subassembly includes: a running friction member; the parking brake assembly includes: the parking friction piece is in contact with the inner ring friction section in the second braking position to generate friction force on the inner ring friction section so as to brake the gear ring; in the second release position, the parking friction piece is far away from the inner ring friction section, so that the brake on the gear ring is released;
in the first braking position, the service driving assembly enables the service braking assembly to generate a first braking force through the service transmission assembly; when the vehicle body is braked for a long time but does not stop running, the service brake assembly in the first brake position generates a first brake force, and the parking brake assembly is in the second brake position; in the first braking position, the service driving assembly enables the service braking assembly to generate a second braking force through the service transmission assembly, and the second braking force is larger than the first braking force; when the vehicle body stops running in the process of long-time braking but not stopping running, the service brake assembly in the first brake position generates a second braking force, and the parking brake assembly is in the second brake position.
2. Integrated service and parking brake arrangement according to claim 1,
when the vehicle body is braked for a long time and stops running, the service brake assembly in the first brake position generates a second brake force, and the parking brake assembly is in the second brake position.
3. The integrated service and parking brake actuation device of claim 2, wherein said service brake mechanism further comprises: the moment output adjusting module is connected with the driving assembly and used for adjusting and controlling the driving assembly to output a first output moment or a second output moment so as to drive the driving brake assembly to output a first braking force or a second braking force through the driving transmission assembly.
4. The integrated service and parking brake actuation device of claim 1, wherein said service brake mechanism further comprises: reserve driving drive assembly, reserve driving drive assembly with the driving transmission subassembly is connected, reserve driving drive assembly is used for passing through driving transmission subassembly drive the driving braking subassembly switches between first braking position and first position of relieving.
5. Integrated service and parking brake braking device according to claim 1,
the driving transmission assembly comprises: a planetary gear unit and a ball screw unit, the planetary gear unit including: a sun gear, a planet gear, a ring gear, and a planet carrier; the planet wheels are distributed along the periphery of the sun wheel and are meshed with the sun wheel; the gear ring is provided with an inner gear ring arranged along the peripheral surface of an inner ring of the gear ring and a friction surface arranged along the peripheral surface of an outer ring of the gear ring, and the inner gear ring is meshed with the planet gear; the planet wheel is arranged on the planet carrier, and the planet carrier is kept still; the travelling crane driving assembly is connected with the planet wheel; the ball screw unit includes: a ball screw and a nut screwed to the ball screw, the nut being held stationary in a circumferential direction; the ball with the sun gear is connected, the nut with service brake subassembly is connected, service brake subassembly includes: a running friction member;
the driving component is used for driving the planet wheel to rotate, the sun wheel drives the ball screw to rotate, and the nut outputs linear motion along the axial lead direction of the ball screw so as to drive the driving friction piece to switch between a first braking position and a first release position; in the first braking position, the driving friction piece is contacted with the brake disc body of the vehicle body and generates friction force with the brake disc body so as to brake the brake disc body; in the first release position, the driving friction piece is far away from the brake disc body of the vehicle body so as to release the brake of the brake disc body;
the parking brake assembly includes: a parking friction member that contacts the friction surface to generate a frictional force against the friction surface in the second braking position, thereby braking the ring gear; in the second release position, the friction member is away from the friction surface, thereby releasing the braking of the ring gear.
6. Integrated service and parking brake braking device according to claim 1,
the inner tooth segment has a first end and a second end; the traveling crane driving assembly drives the planet wheel to rotate so as to drive the ball screw to rotate through the sun wheel, and the nut outputs linear motion along the axial lead direction of the ball screw; when the planet wheel is meshed with the first end of the inner tooth section, the nut drives the service friction piece to be switched to the first braking position, the service friction piece is in contact with a brake disc body of the vehicle body, and friction force is generated between the service friction piece and the brake disc body so as to brake the brake disc body; when the planet wheel meshes to the second end of the inner tooth section, the nut drives the driving friction piece to be switched to the first release position, and the driving friction piece is far away from the brake disc body of the vehicle body so as to release the brake of the brake disc body.
7. The integrated service and parking brake actuator of claim 1, wherein the parking drive assembly comprises: the parking device comprises a parking driving motor, a parking transmission screw rod and a parking transmission nut; the parking driving motor is connected with the parking transmission screw rod, the parking transmission nut is in threaded connection with the parking transmission screw rod, and the parking friction piece is connected with the parking transmission nut; the parking driving motor is used for driving the parking transmission screw rod to rotate around the axis line of the parking transmission screw rod, the parking transmission nut can be switched between a first position and a second position along the axis line direction of the parking transmission screw rod, the parking friction piece is located at the second braking position at the first position, and the parking friction piece is located at the second releasing position at the second position.
8. A vehicle, characterized by comprising: an integrated service and parking brake braking device according to any one of claims 1 to 7; further comprising: a vehicle body having a brake disc body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210462110.4A CN114572166B (en) | 2022-04-29 | 2022-04-29 | Braking device integrating running braking and parking braking and vehicle |
| PCT/CN2022/119407 WO2023206929A1 (en) | 2022-04-29 | 2022-09-16 | Brake device integrating driving brake and parking brake functions, and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210462110.4A CN114572166B (en) | 2022-04-29 | 2022-04-29 | Braking device integrating running braking and parking braking and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114572166A CN114572166A (en) | 2022-06-03 |
| CN114572166B true CN114572166B (en) | 2022-08-30 |
Family
ID=81779011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210462110.4A Active CN114572166B (en) | 2022-04-29 | 2022-04-29 | Braking device integrating running braking and parking braking and vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114572166B (en) |
| WO (1) | WO2023206929A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114572166B (en) * | 2022-04-29 | 2022-08-30 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Braking device integrating running braking and parking braking and vehicle |
| CN115610397B (en) * | 2022-11-23 | 2023-04-18 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Electronic mechanical brake device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009144908A (en) * | 2007-12-15 | 2009-07-02 | Hyundai Motor Co Ltd | Vehicular reduction gear, and electronic parking brake and electronic motor brake using the same |
| CN204573076U (en) * | 2015-04-28 | 2015-08-19 | 湖南交通职业技术学院 | A kind of planetary gear type parking and braking mechanism |
| CN108105292A (en) * | 2016-11-24 | 2018-06-01 | 比亚迪股份有限公司 | Brake actuator, brake system of car and electric vehicle |
| CN109398334A (en) * | 2018-12-29 | 2019-03-01 | 芜湖伯特利汽车安全系统股份有限公司 | A kind of control method and system promoting motor vehicle service brake safety based on parking braking |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10224688A1 (en) * | 2002-06-04 | 2003-12-18 | Bosch Gmbh Robert | Stationary brake operating method for automobile electromechanical braking system, uses movement sensor for preventing operation of stationary brake during movement of automobile |
| DE102005044669B4 (en) * | 2005-09-19 | 2016-12-08 | Robert Bosch Gmbh | Parking brake for a vehicle with independent locking |
| DE102005055085B4 (en) * | 2005-09-29 | 2020-09-24 | Robert Bosch Gmbh | Combined service and parking brake device as well as a method for performing emergency braking |
| JP2012240452A (en) * | 2011-05-16 | 2012-12-10 | Advics Co Ltd | Brake control device |
| CN205589209U (en) * | 2016-04-18 | 2016-09-21 | 苏庆列 | Automatically controlled parking brake of planetary geared |
| CN108105295A (en) * | 2016-11-24 | 2018-06-01 | 比亚迪股份有限公司 | Brake actuator, brake system of car and electric vehicle |
| CN114572166B (en) * | 2022-04-29 | 2022-08-30 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Braking device integrating running braking and parking braking and vehicle |
-
2022
- 2022-04-29 CN CN202210462110.4A patent/CN114572166B/en active Active
- 2022-09-16 WO PCT/CN2022/119407 patent/WO2023206929A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009144908A (en) * | 2007-12-15 | 2009-07-02 | Hyundai Motor Co Ltd | Vehicular reduction gear, and electronic parking brake and electronic motor brake using the same |
| CN204573076U (en) * | 2015-04-28 | 2015-08-19 | 湖南交通职业技术学院 | A kind of planetary gear type parking and braking mechanism |
| CN108105292A (en) * | 2016-11-24 | 2018-06-01 | 比亚迪股份有限公司 | Brake actuator, brake system of car and electric vehicle |
| CN109398334A (en) * | 2018-12-29 | 2019-03-01 | 芜湖伯特利汽车安全系统股份有限公司 | A kind of control method and system promoting motor vehicle service brake safety based on parking braking |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023206929A1 (en) | 2023-11-02 |
| CN114572166A (en) | 2022-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114572166B (en) | Braking device integrating running braking and parking braking and vehicle | |
| KR930002425B1 (en) | Electrically operated disc brake with back-off protector | |
| CN101782118B (en) | Electric disk brake | |
| KR20170092198A (en) | Electronic disc brake | |
| CN111750009B (en) | Braking system with torque distribution assembly | |
| KR20170035156A (en) | Electronic disc brake | |
| KR20170035392A (en) | Electronic disc brake | |
| KR20170035389A (en) | Electronic disc brake | |
| US6679356B2 (en) | Brake caliper backdrive apparatus and method | |
| US20220297660A1 (en) | Electric parking brake | |
| CN115520170A (en) | Electromechanical brake device and vehicle | |
| CA3074756A1 (en) | Mechanical force-amplifying type motor-driven friction braking device for rail vehicle | |
| CN112855887B (en) | Electronic braking variable-tension driver for vehicle | |
| RU2246053C2 (en) | Disk brake | |
| KR101654813B1 (en) | Electro-Mechanical Brake | |
| CN212667346U (en) | Parking braking device and vehicle | |
| KR20120000838A (en) | Electro mechanical brake system | |
| CN214534336U (en) | Variable-tension linear transmission device | |
| KR20090061967A (en) | Planet gear typed electric mechanical brake system | |
| JP4556650B2 (en) | Brake device for vehicle | |
| JP2010510461A (en) | Kinematic chain for electric propulsion vehicles | |
| JP2007056917A (en) | Electric disk brake | |
| KR100885813B1 (en) | Disk brake for vehicle | |
| KR20100031303A (en) | Automobile electric motion brake | |
| CN111412234A (en) | Electronic brake/parking mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |