CN216861421U - Retarder arranged at wheel edge and motor vehicle thereof - Google Patents

Abstract

The application relates to the technical field of vehicle braking, in particular to a retarder arranged on a wheel side and a motor vehicle thereof. The retarder comprises a shell fixedly arranged on the wheel edge of a wheel and a variable vane pump type mechanism positioned in the shell; variable vane pump formula mechanism includes that input shaft and the spline that is connected with the transmission shaft transmission of wheel couple in the rotor structure on the input shaft and the regulation ring structure of activity spacing connection in the casing, the rotor structure is arranged in the working chamber of regulation ring structure, and the internal diameter size of rotor structure is less than the internal diameter size of regulation ring structure, the open slot has radially been seted up to the rotor structure, the regulation ring structure is connected with the blade, the blade has the movable part of sliding connection in the open slot, the relative both sides of rotor structure are equipped with the support ring respectively, the one end butt that the blade is close to the input shaft is on the support ring. The motor vehicle is provided with the retarder. The technical problem that the conventional retarder cannot be arranged on the wheel edge is solved.

Description

Retarder arranged beside wheel and motor vehicle with retarder

Technical Field

The application relates to the technical field of vehicle braking, in particular to a retarder arranged on a wheel side and a motor vehicle thereof.

Background

Due to the fact that urban road intersections are multiple, bus stops are dense, passenger flow is large, buses are frequently braked, mountainous roads are steep and have many sharp bends, and medium-sized and large-sized trucks and buses running on mountainous road sections for a long time are also frequently braked. Under the condition of long-time frequent work, the brake shoes are quickly worn, the service life of the brake friction plates is short, and the loss of braking force or great reduction of braking performance is caused by the heat fading of the brake, which also becomes the main cause of traffic accidents. Therefore, it is necessary to equip an auxiliary braking system.

The retarder is used as an auxiliary braking component of the vehicle, reduces the load of the braking system of the original vehicle by acting on the transmission system of the original vehicle, enables the vehicle to uniformly decelerate, improves the reliability of the braking system of the vehicle, prolongs the service life of the braking system, and can greatly reduce the use cost of the vehicle.

The common retarder is mainly a hydraulic retarder, and some of the conventional retarders are permanent magnet eddy current retarders, but the conventional retarders are large in size and heavy in weight, are placed at the torque output end of a gearbox, are connected with a transmission shaft in parallel or in series, and cannot be arranged at the wheel edge.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a retarder and a motor vehicle to solve the technical problem that the existing retarder cannot be arranged on the wheel side.

In a first aspect, the present application provides a retarder arranged at a wheel rim, for being mounted on the wheel rim, the retarder includes: the variable vane pump type mechanism is fixedly arranged on the wheel rim of the wheel;

the variable vane pump mechanism includes: an input shaft in transmission connection with a transmission shaft of the wheel, a rotor structure in spline connection with the input shaft, and an adjusting ring structure movably limited and connected in the shell,

the rotor structure is located in the working chamber in the adjustment ring structure, just the internal diameter of rotor structure is less than the internal diameter of adjustment ring structure, the open slot has radially been seted up to the rotor structure, the adjustment ring structure is connected with the blade, the blade have sliding connection in movable part in the open slot, the relative both sides of rotor structure are equipped with the support ring respectively, the blade is close to the one end butt of input shaft in on the support ring.

Further, the input shaft is coaxially and rotatably coupled with the transmission shaft; or

The transmission gear pair comprises a main gear and an auxiliary gear which are meshed with each other, the main gear is in transmission connection with a transmission shaft of the wheel, and the auxiliary gear is in transmission connection with the input shaft.

Furthermore, the transmission gear pair adopts a speed-up and torque-down structure, and the transmission ratio of the transmission gear pair is greater than 4.0.

Furthermore, the working cavity in the adjusting ring structure is divided into an output cavity and an adjusting cavity which are arranged in a closed mode, the output cavity is communicated with the output cavity of the pump, a hydraulic electromagnetic proportional valve for controlling the on-off of the output cavity and the adjusting cavity is arranged between the output cavity and the adjusting cavity, and the on-off of the hydraulic electromagnetic proportional valve is controlled to control the pressure difference between the output cavity and the adjusting cavity so as to obtain the corresponding output torque.

Furthermore, the retarder also comprises a variable pump spring seat which is positioned in the shell and fixedly connected with the shell,

and a variable spring is arranged in the variable pump spring seat, one end of the variable spring is connected with the bottom of the variable pump spring seat, and the other end of the variable spring is elastically connected with the adjusting ring structure so as to drive and control the adjusting ring structure to rotate and swing.

Further, the output cavity is arranged on the opposite side of the variable spring, and the outer wall of the output cavity is elastically connected with one end of the variable spring.

Furthermore, the outer wall of the variable pump spring seat is attached to the outer wall of the adjusting ring structure.

Furthermore, a plurality of open grooves are arranged at intervals along the circumferential direction of the rotor structure,

a plurality of the blades are arranged at intervals along the circumferential direction of the adjusting ring structure,

the plurality of opening grooves and the plurality of movable parts of the blades are arranged in a one-to-one correspondence manner.

Furthermore, the outer part of the shell adopts a radiating fin structure and is fixed on a steering knuckle of the wheel through a fastening bolt; and/or

The input shaft is connected with a hub of the wheel through a flange.

In a second aspect, the present application provides a motor vehicle comprising the retarder of any one of the preceding claims, the retarder being mounted on a wheel rim of a wheel of the motor vehicle.

Compared with the prior art, the retarder arranged at the wheel edge and the motor vehicle thereof are arranged at the wheel edge of the wheel, the variable vane pump type mechanism which realizes the speed slowing function is arranged in a shell fixed on the wheel edge of the wheel and realizes the eccentric motion of the rotor structure and the adjusting ring structure with different inner diameters by the transmission connection of an output shaft and a wheel transmission shaft, meanwhile, the eccentric rotary motion is realized through the vanes which are connected in the opening grooves of the rotor structure in a sliding way and the supporting rings which are abutted against the vanes, when the speed needs to be slowed down, the adjusting ring structure is controlled to swing to carry out rotary motion, so that the rotor structure is in a relative motion state, meanwhile, the working cavity is filled with fluid medium, and the pressure change in the working cavity enables the fluid medium to flow in the loop and generate larger resistance, so that braking torque is generated, and the purpose of retarding is achieved. Compared with the existing hydraulic retarder and the existing permanent magnet eddy current retarder, the retarder has the advantages of simple and compact structural arrangement, small structural size and relatively light weight, and can be arranged on the wheel rim of a wheel.

Drawings

In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic layout diagram of a retarder arranged at a wheel rim position according to an embodiment of the present application;

FIG. 2 is a schematic diagram illustrating a position relationship of a retarder disposed at a wheel according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a retarder provided in an embodiment of the present application;

fig. 4 is a cross-sectional view of a retarder provided in an embodiment of the present application.

Reference numerals are as follows:

100-a retarder;

10-a housing;

20-a transmission gear pair;

30-variable vane pump type mechanism;

31-an input shaft;

32-rotor configuration;

321-an open slot;

33-a regulatory ring structure;

331-leaf;

34-hydraulic electromagnetic proportional valve;

351-variable pump spring seats;

352-variable spring;

36-a support ring;

1000-vehicle wheel;

200-a drive shaft;

300-knuckle.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "suspended" and the like do not imply that the components are absolutely horizontal or suspended, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

As shown in fig. 1 to 4, an embodiment of the present application provides a retarder 100 that can be disposed at a wheel-side position of a wheel 1000, and a motor vehicle, which may specifically be a truck, a car, or a bus, and has the retarder 100 disposed at the wheel side. The retarder 100 may include a housing 10 fixedly mounted to a rim of a wheel 1000 and a variable vane pump mechanism 30 located within the housing 10. The variable vane pump mechanism 30 may include an input shaft 31, a rotor structure 32 and an adjusting ring structure 33, the input shaft 31 is in transmission connection with the transmission shaft 200 of the wheel 1000, specifically, the input shaft 31 may be in coaxial rotation connection with the transmission shaft 200, i.e. in series connection, to transmit power, and a transmission gear pair 20 may be further provided, the transmission gear pair 20 includes a main gear and a secondary gear which are in meshed connection with each other, the main gear may be in transmission connection with the transmission shaft 200, and the secondary gear is in transmission connection with the input shaft 31 to transmit power.

The rotor structure 32 is spline-coupled to the input shaft 31 and rotates coaxially with the input shaft 31, the adjusting ring structure 33 is limited and movably connected in the housing 10, the rotor structure 32 is located in a working cavity in the adjusting ring structure 33, and the inner diameter of the rotor structure 32 is smaller than the inner diameter of the adjusting ring structure 33, so that the adjusting ring structure 33 can swing spatially relative to the rotor structure 32 to realize eccentric motion of the two. The rotor structure 32 is radially provided with an open slot 321, the adjusting ring structure 33 is connected with a vane 331, specifically, one end of the vane 331 is connected to a circumferential edge of the adjusting ring structure 33, the vane 331 has a movable portion slidably connected in the open slot 321, so that the vane can rotate relative to the rotor structure 32 and the open slot 321, meanwhile, two opposite sides of the rotor structure 32 can be respectively provided with a support ring 36, the support ring 36 can be fixed between the casing 10 and the adjusting ring structure 33 in a limited manner, specifically, the two support rings 36 are respectively arranged corresponding to two opposite sides of the rotor structure 32, which are provided with the open slot 321, one end of the vane 331 close to the input shaft 31 is abutted against the support ring 36, so that the vane 331 is fixed relative to the support rings 36 and the adjusting ring structure 33, and can simultaneously rotate relative to the rotor structure 32 through the movable portion. When the speed is required to be slowed down, after the working cavity is filled with fluid media, the resistance of the eccentric motion of the working cavity and the resistance of the rotation of the rotor structure 32 are increased, and the pressure change in the working cavity enables the fluid media to flow in the loop and generate larger resistance, so that the braking torque is generated, and the purpose of slowing the speed is achieved; when the system is unloaded in idle load, the fluid medium is drained, the variable vane pump type mechanism 30 and the wheel transmission shaft 200 idle together, the resistance loss is small, and the slow speed is relieved. In the embodiment of the application, the fluid medium can be high-viscosity hydraulic oil, magnetorheological fluid and the like, the higher the viscosity is, the higher the flow resistance is, the larger the generated braking torque is, and the better the retarding effect is.

Compared with the prior art, the retarder 100 and the motor vehicle thereof provided by the embodiment of the application are arranged at the wheel rim of the wheel 1000, the retarder 100 is directly connected with the transmission shaft 200 of the wheel 1000 in a transmission way or connected with the transmission shaft 200 in a transmission way through the transmission gear pair 20, the variable vane pump type mechanism 30 for realizing the speed reducing function is arranged in the shell 10 fixed at the wheel rim of the wheel 1000, the rotor structure 32 and the adjusting ring structure 33 with different inner diameters realize the eccentric movement of the two, meanwhile, the eccentric rotary movement is realized through the vanes 331 connected in the open slots 321 of the rotor structure 32 in a sliding way and the supporting rings 36 abutted against the vanes 331, when the speed reducing is needed, the adjusting ring structure 33 is controlled to swing to carry out the rotary movement, so that the rotor structure 32 is in a relative movement state, simultaneously, the working cavities are filled with fluid media, and the pressure change in the working cavities enables the fluid media to flow in the loops and generate larger resistance, thereby generating braking torque and achieving the purpose of retarding. Compared with the existing hydraulic retarder and the existing permanent magnet eddy current retarder, the retarder 100 has the advantages of simple and compact structural arrangement, small structural volume and relatively light weight, and can be arranged on the wheel rim. The retarder 100 can realize the adjustment frequency of near kilohertz to obtain an ideal braking force, and can realize anti-lock braking, so that the functions of 80% braking and deceleration are met.

Further, as shown in fig. 3, a plurality of the opening grooves 321 may be provided at intervals in the circumferential direction of the rotor structure 32, and correspondingly, a plurality of the vanes 331 may be provided at intervals in the circumferential direction of the adjusting ring structure 33, and the plurality of opening grooves 321 and the movable portions of the plurality of vanes 331 are provided in one-to-one correspondence. Specifically, the number of the blades 331 is typically a single number, such as 7 or 9, and when the radius is large, the number of the blades may be 11 or more. So as to further increase the braking resistance and improve the retarding effect. Further, the aperture moving range of the opening groove 321 may be set according to the allowable relative swing range of the rotor structure 32 and the adjustment ring structure 33.

In a preferred embodiment, as shown in fig. 3 and 4, the working chamber in the aforementioned adjusting ring structure 33 can be divided into an output chamber and an adjusting chamber which are arranged in a closed manner, the output chamber is communicated with the pump output chamber, and a hydraulic electromagnetic proportional valve 34 which controls the on-off of the output chamber and the adjusting chamber can be arranged between the output chamber and the adjusting chamber. The pressure difference between the output cavity and the adjusting cavity is controlled by controlling the on-off of the rotor structure, so that the eccentricity between the rotor structure 32 and the adjusting ring structure 33 is adjusted, the eccentric rotation formed by the blades 331, the supporting ring 33 and the rotor structure 32 is controlled, different pump amounts and pump pressures are obtained, and different braking torques are obtained. The setting of the hydraulic electromagnetic proportional valve 34 can realize the frequency control braking force within 10 to 20 Hz, and can realize the continuous controllable braking required by anti-locking and the like.

Further, the retarder 100 provided in the embodiment of the present application may further include a variable pump spring seat 351 and a variable spring 352 installed inside the variable pump spring seat 351, wherein the variable pump spring seat 351 is installed and fixed in the casing 10, one end of the variable spring 352 is fixedly connected to the bottom of the variable pump spring seat 351, and the other end of the variable spring 352 is elastically connected to the adjusting ring structure 33, and the elastic expansion and contraction of the variable spring 352 is used to drive and control the rotation swing range, the swing amplitude and the force of the adjusting ring structure 33, and meanwhile, the range is limited to a certain extent, so as to control the pressure change degree in the working chamber, and further control the resistance generated by the fluid medium flowing in the loop, and thereby control and limit the generated braking torque. Specifically, the output cavity can be arranged on the opposite side of the variable spring 352, or on the same side of the variable spring 352, when the hydraulic electromagnetic proportional valve 34 is arranged on the opposite side, when the hydraulic electromagnetic proportional valve is powered off, the oil is not fed into the adjusting cavity, the output cavity enables the adjusting ring structure 33 to overcome the spring force to turn to the variable spring side under the action of pressure, at this time, the eccentric distance between the adjusting ring structure 33 and the rotor structure 32 is shortest, the output flow of the working cavity is minimum, and the formed torque is also minimum, namely, the no-load state; when the hydraulic electromagnetic proportional valve 34 is electrified, oil enters the adjusting cavity, the acting force of a compression spring of the output cavity is counteracted, the adjusting ring structure 33 rotates towards the side of the output cavity under the action of the variable spring 352, the eccentricity of the adjusting ring structure 33 and the rotor structure 32 is gradually increased, the output flow of the working cavity is increased, the output torque is increased, the braking torque is generated, the hydraulic electromagnetic proportional valve 34 is controlled to obtain different pressure differences between the output cavity and the adjusting cavity according to requirements, different output torques are obtained, and the retarding effects of different degrees are achieved.

Further, the outer wall of the variable pump spring seat 351 may be closely attached to the outer wall of the adjusting ring structure 33. The arrangement is more convenient, the arrangement is more reasonable and compact, the whole volume can be smaller, the arrangement is more suitable for the wheel edge, the work of the adjusting ring structure 33 is not influenced, and the work of the variable spring 352 can be better realized.

Alternatively, the outer portion of the housing 10 may adopt a heat sink structure, and may be fixed to the knuckle 300 of the wheel 1000 by fastening bolts, so as to better dissipate heat inside the retarder 100. The input shaft 31 of the variable vane pump mechanism 30 may be connected to the hub of the wheel 1000 via a flange. Furthermore, the transmission gear pair 20 may adopt an external gear and a speed-increasing and torque-reducing structure, and the transmission ratio is preferably greater than 4.0. This ensures that a retarding torque of about 4000Nm is generated on the propeller shaft 200 of the wheel, which is usually arranged inside the wheel brake, and when driving the axle, the input shaft 31 is the half shaft, and when not driving the axle, the input shaft 31 can be connected to the hub of the wheel 1000 through the flange.

In addition, the output port can be directly arranged in the shell 10 by adopting a radiator structure, so that heat is dissipated through air, and in the case of large braking force, such as a truck, the heat is dissipated from the engine water tank through heat exchange with cooling water. Or a cooling water tank is additionally arranged, and the heating water tank can be used for heating the cab in winter. In summer, the semiconductor refrigeration chip can be used for air conditioning refrigeration.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A retarder placed at the wheel rim is characterized in that the retarder is used for being installed at the wheel rim of a vehicle and comprises: the variable vane pump type mechanism is fixedly arranged on the wheel rim of the wheel;

the variable vane pump mechanism includes: an input shaft in transmission connection with a transmission shaft of the wheel, a rotor structure connected to the input shaft through a spline and an adjusting ring structure movably connected in a limiting manner in the shell,

the rotor structure is located in the working cavity in the adjusting ring structure, the inner diameter of the rotor structure is smaller than the inner diameter of the adjusting ring structure, an open slot is radially formed in the rotor structure, the adjusting ring structure is connected with blades, the blades are provided with movable parts in the open slot in a sliding connection mode, support rings are respectively arranged on two opposite sides of the rotor structure, and the blades are close to one end of the input shaft and abut against the support rings.

2. A retarder according to claim 1,

the input shaft is coaxially and rotationally connected with the transmission shaft; or

The transmission gear pair comprises a main gear and an auxiliary gear which are meshed with each other, the main gear is in transmission connection with a transmission shaft of the wheel, and the auxiliary gear is in transmission connection with the input shaft.

3. A retarder according to claim 2,

the transmission gear pair adopts a speed-up and torque-down structure, and the transmission ratio of the transmission gear pair is greater than 4.0.

4. A retarder according to any of claims 1-3,

the working cavity in the adjusting ring structure is divided into an output cavity and an adjusting cavity which are arranged in a closed mode, the output cavity is communicated with the pump output cavity, a hydraulic electromagnetic proportional valve for controlling the on-off of the output cavity and the adjusting cavity is arranged between the output cavity and the adjusting cavity, and the on-off of the hydraulic electromagnetic proportional valve is controlled to control the pressure difference between the output cavity and the adjusting cavity so as to obtain corresponding output torque.

5. A retarder according to claim 4, further comprising a variable pump spring seat located within the housing and fixedly connected to the housing,

and a variable spring is arranged in the variable pump spring seat, one end of the variable spring is connected with the bottom of the variable pump spring seat, and the other end of the variable spring is elastically connected with the adjusting ring structure so as to drive and control the adjusting ring structure to rotate and swing.

6. A retarder according to claim 5,

the output cavity is arranged on the opposite side of the variable spring, and the outer wall of the output cavity is elastically connected with one end of the variable spring.

7. A retarder according to claim 5 or 6,

the outer wall of the variable pump spring seat is attached to the outer wall of the adjusting ring structure.

8. A retarder according to claim 1,

a plurality of open grooves are arranged at intervals along the circumferential direction of the rotor structure,

a plurality of the vanes are arranged at intervals along the circumferential direction of the adjusting ring structure,

the plurality of opening grooves and the plurality of movable parts of the blades are arranged in a one-to-one correspondence manner.

9. A retarder according to claim 1,

the outer part of the shell adopts a radiating fin structure and is fixed on a steering knuckle of the wheel through a fastening bolt; and/or

The input shaft is connected with a hub of the wheel through a flange.

10. A motor vehicle, characterized in that it comprises a retarder according to any of claims 1-9.

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