CN211568082U

CN211568082U - Steering power cut-off device, disconnectable steering transmission system and vehicle

Info

Publication number: CN211568082U
Application number: CN202020180132.8U
Authority: CN
Inventors: 金鑫; 肖梦魁; 王向阳; 徐琳; 赵坤; 谢金铭; 李�远; 贾文学
Original assignee: Zhengzhou Yutong Heavy Industry Co Ltd
Current assignee: Zhengzhou Yutong Heavy Industry Co Ltd
Priority date: 2020-01-20
Filing date: 2020-02-18
Publication date: 2020-09-25
Anticipated expiration: 2030-02-18

Abstract

The utility model relates to a vehicle field especially relates to a turn to power cutting device, breakable steering transmission system and vehicle. The steering power cut-off device includes: a housing; the first transmission shaft and the second transmission shaft are rotatably arranged on the shell, one transmission shaft is used for being connected with a steering wheel in a transmission mode, and the other transmission shaft is used for being connected with wheels in a transmission mode; the clutch device is used for realizing the state switching of power combination and power separation between the first transmission shaft and the second transmission shaft; and the locking structure locks one of the first transmission shaft and the second transmission shaft at a set rotation angle. The utility model discloses a turn to power cutting device through clutch realize with first, the power between the second transmission shaft combine and the separation, turn to power cutting device reliability high, the locking of the transmission shaft that the locking structure can guarantee to correspond is setting for the corner, another transmission shaft of being convenient for finds to set for behind the corner with the transmission shaft power combination that corresponds, turn to the transmission degree of accuracy high, make things convenient for the driver to drive the vehicle.

Description

Steering power cut-off device, disconnectable steering transmission system and vehicle

Technical Field

The utility model relates to a vehicle field especially relates to a turn to power cutting device, breakable steering transmission system and vehicle.

Background

The steering transmission system of the vehicle is one of the very important transmission systems in the whole vehicle, and for a general vehicle, the steering transmission system finally transmits the steering driving force of a steering wheel to wheels and drives the wheels to steer through a steering column, a multi-stage steering transmission shaft, a steering gear and a steering transmission connecting rod which are sequentially connected to the downstream of the steering wheel. However, with the advent of new vehicles and new driving requirements, the steering transmission system of a general vehicle can no longer meet the use requirements.

For example, in the case of an intelligent unmanned vehicle, the steering wheel does not need to be rotated during automatic driving, the steering of the wheels is controlled by a control system, and during manned driving, the steering operation of the steering wheel rotated by the driver needs to be transmitted to the wheels, so that the cutting off and switching of the steering power are realized in different driving modes. For another example, in a special vehicle which needs to travel on land and under water, when the vehicle travels on land, the steering wheel transmits steering power to the wheels, and the steering of the vehicle is achieved by the deflection of the wheels, and when the vehicle travels under water, the steering wheel transmits steering power to the jet pump, and the steering of the vehicle is achieved by the deflection of the jet pump.

In order to meet the use requirements of the special vehicles mentioned above, the prior art also provides a corresponding solution, for example, chinese patent application with application publication No. CN107651008A, which adopts a full hydraulic drive steering mode, and realizes the switching of steering power between wheels and a jet pump through a steering control valve set, but the hydraulic system has poor stability during high-speed transmission, and the hydraulic valve is easy to leak oil in a driving vibration environment, and has low transmission reliability and accuracy.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a turn to power cutting device for solve the current realization and rotate the device reliability of power switching poor, turn to the problem that the transmission degree of accuracy is low.

The utility model discloses a turn to power cutting device includes:

a housing;

the first transmission shaft and the second transmission shaft are rotatably arranged on the shell, one transmission shaft is used for being connected with a steering wheel in a transmission mode, and the other transmission shaft is used for being connected with wheels in a transmission mode;

the clutch device is used for realizing the state switching of power combination and power separation between the first transmission shaft and the second transmission shaft;

and the locking structure locks one of the first transmission shaft and the second transmission shaft at a set rotation angle.

The utility model discloses a turn to power cutting device pass through clutch realize and first, power between the second transmission shaft combines and the separation, turn to power cutting device reliability height, the locking of the transmission shaft that the locking structure can guarantee to correspond is setting for the corner, another transmission shaft of being convenient for finds to set for behind the corner and the transmission shaft power combination that corresponds, just so guarantee before turning to power and cutting off and after the joint, angular position between first transmission shaft and the second transmission shaft is unchangeable, turn to the transmission degree of accuracy height, make things convenient for the driver to drive the vehicle.

Further, the clutch device includes: the clutch transmission part is movably arranged in the shell and can realize power combination and power separation of the first transmission shaft and the second transmission shaft in the movable stroke; the clutch driving mechanism is fixedly connected or blocked with the clutch transmission part so as to drive the clutch transmission part to combine or separate the first transmission shaft and the second transmission shaft. The corresponding clutch driving mechanism is adopted to drive the clutch transmission part to act, and the reliability is high through mechanical transmission.

Furthermore, the first transmission shaft and the second transmission shaft are coaxially arranged, the clutch transmission part is provided with a plug-in structure used for being in rotation stopping plug bushes with the first transmission shaft and the second transmission shaft, can axially slide along the first transmission shaft and the second transmission shaft, and is axially separated from one of the first transmission shaft and the second transmission shaft through sliding to realize power disconnection. The clutch transmission part adopts a linear sliding mode to realize power combination and disconnection, the moving mode is simple, and the clutch action is convenient to control.

Furthermore, the clutch transmission part comprises a stator and a rotor which are rotatably assembled together, the stator and the rotor are relatively fixed in the axial direction, the output end of the clutch driving mechanism is connected with the stator, and the insertion structure is arranged on the rotor of the clutch transmission part. Therefore, when the clutch driving mechanism drives the clutch transmission part to move, the rotation action of the rotor and the integral axial movement of the clutch transmission part do not interfere with each other, and the reliability is higher.

Or, still further, the locking structure is a rotation stopping groove arranged in the shell, after the clutch transmission component moves to a position where the clutch transmission component is separated from one of the first transmission shaft and the second transmission shaft, the rotor of the clutch transmission component enters the rotation stopping groove, and the rotation stopping is realized through the profile matching of the outer side surface of the rotor and the rotation stopping groove. The rotation stopping groove is used for stopping the rotation of the clutch transmission component, the rotation stopping groove is simple and reliable, and the rotation stopping groove is integrated at one end of the axial sliding stroke of the clutch transmission component in the shell, so that the internal structure of the shell is integrally compact.

Still further alternatively, the clutch driving mechanism comprises a lead screw nut mechanism, and a nut of the lead screw nut mechanism is connected with the clutch transmission component and drives the clutch transmission component to axially slide. The screw nut mechanism is adopted to drive the clutch transmission part to axially slide, the operation is stable and reliable, and after the nut moves in place, the self-locking performance of the screw nut mechanism can also ensure that the clutch transmission part is kept at the corresponding position, so that the reliability of the device is improved.

Furthermore, the input end of the lead screw nut mechanism is in transmission connection with a rotary power device through a worm gear mechanism. The self-locking performance of the worm gear mechanism is utilized, and the position guarantee of the clutch transmission part is further improved.

As another improvement, one of the first and second transmission shafts, which is not provided with the locking structure, is provided with a position detection device for detecting rotational angle information. Therefore, whether the corresponding transmission shaft is at the set corner position or not when one of the first transmission shaft and the second transmission shaft is locked or not is convenient to know, whether the transmission shaft which is not locked rotates to the set corner position or not when the first transmission shaft and the second transmission shaft are combined together with power is convenient to know, and reliability of the clutch process of the first transmission shaft and the second transmission shaft is improved.

Furthermore, the steering power cut-off device also comprises a power-assisted steering mechanism, the steering power-assisted steering mechanism is in transmission connection with one of the first transmission shaft and the second transmission shaft which is not provided with the locking structure, and the power-assisted steering mechanism is used for driving the corresponding transmission shaft to rotate to the set rotation angle before the first transmission shaft and the second transmission shaft are separated from each other according to the rotation angle information detected by the position detection device and driving the corresponding transmission shaft to rotate to the set rotation angle before the first transmission shaft and the second transmission shaft are combined with each other. The power-assisted steering mechanism drives the transmission shaft which is not provided with the locking structure to rotate to a set corner position, so that the angle position of the transmission shaft can be ensured to be accurate and reliable, and the reliability of the clutch process of the first transmission shaft and the second transmission shaft is further improved.

Furthermore, the position detection device is a corner sensor, and the corner sensor is an existing product, so that the position detection device is low in cost, small in size and convenient to assemble.

As another improvement, the set turning angle is a turning angle when the wheels turn back, so that the wheels can be better accommodated in the vehicle body without exposing two sides of the vehicle body, and the use of the vehicle in different running modes is facilitated.

And simultaneously, the utility model aims at providing an use above-mentioned steering power cutting device's open-type steering transmission system for solve current steering transmission system and switching the in-process in the realization steering power, the reliability is poor, the low problem of the degree of accuracy.

The utility model discloses a but disconnect-type steering transmission system includes:

the steering transmission shaft is used for receiving steering power of a steering wheel and transmitting the steering power to the downstream;

the steering power cut-off device is connected in series with the downstream of the steering transmission shaft; and

a steering device connected in series to the downstream of the steering power cut-off device and transmitting steering power to the wheels;

the steering power cut-off device includes: a housing; the first transmission shaft and the second transmission shaft are rotatably arranged on the shell, one transmission shaft is used for being connected with a steering wheel in a transmission mode, and the other transmission shaft is used for being connected with wheels in a transmission mode; the clutch device is used for realizing the state switching of power combination and power separation between the first transmission shaft and the second transmission shaft; and the locking structure locks one of the first transmission shaft and the second transmission shaft at a set rotation angle.

The utility model discloses a but disconnected steering drive system's steering power cutting device pass through clutch realize and first, power between the second transmission shaft combines and the separation, steering power cutting device reliability is high, the locking of transmission shaft that the locking structure can guarantee to correspond is setting for the corner, another transmission shaft of being convenient for finds to set for behind the corner and the transmission shaft power combination that corresponds, just so guarantee before steering power cuts off and after the joint, the angular position between first transmission shaft and the second transmission shaft is unchangeable, the steering drive degree of accuracy is high, make things convenient for the driver to drive the vehicle.

Furthermore, the utility model discloses a breakable steering transmission still includes: the auxiliary steering driving mechanism is used for controlling the steering of the corresponding accessory; the controller is connected with the position detection device and the auxiliary steering driving mechanism when one of the first transmission shaft and the second transmission shaft, which is not provided with the locking structure, is provided with the position detection device for detecting the steering angle information; one of the first transmission shaft and the second transmission shaft which is not provided with the locking structure is in transmission connection with the steering transmission shaft and rotates when the steering wheel rotates, the position detection device provides the detected corner information to the controller, and the controller controls the auxiliary steering driving mechanism to drive the corresponding accessory to steer according to the corner signal.

Or, the utility model discloses a but disconnected formula steering transmission still includes: the auxiliary steering driving mechanism is used for controlling the steering of the corresponding accessory; the auxiliary position detection device is used for detecting the rotation angle information of one of the first transmission shaft and the second transmission shaft which is not provided with the locking structure; the controller is connected with the auxiliary position detection device and the auxiliary steering driving mechanism; one of the first transmission shaft and the second transmission shaft which is not provided with the locking structure is in transmission connection with the steering transmission shaft, and rotates when the steering wheel rotates, the auxiliary position detection device provides the corner information to the controller, and the controller controls the auxiliary steering driving mechanism to drive the corresponding accessory to steer according to the corner signal.

Thus, the utility model discloses a but disconnection type turns to transmission system when being applied to for example can travel on land, can be in the multipurpose special type vehicle of underwater navigation again, the utility model discloses a but disconnection type turns to transmission system can convenient and reliable realization turn to the switching of power between wheel and corresponding annex, makes the vehicle drive get up convenient and comfortable more.

In addition, the locking structure is arranged in one of the first transmission shaft and the second transmission shaft and is used for being connected with the wheel transmission, so that when the disconnectable steering transmission system is applied to a multipurpose special vehicle which can run on land and in water, the wheels can be locked when the vehicle runs in water.

Furthermore, the utility model aims at providing a vehicle that contains above-mentioned steering power cutting device for solve current vehicle that has special driving demand poor, the degree of accuracy is low at the switching in-process reliability that realizes steering power, and then lead to the poor problem of vehicle driveability.

The utility model discloses a vehicle, including the frame, dispose breakable steering drive system on the frame, breakable steering drive system includes:

the steering transmission shaft receives steering power transmitted from the upstream and transmits the steering power to the downstream;

The utility model discloses a but disconnected formula that the vehicle contained turns to transmission system's steering power cutting device passes through clutch and realizes and first, power between the secondary drive axle combines and the separation, steering power cutting device reliability is high, the locking that the locking structure can guarantee the transmission shaft that corresponds is setting for the corner, another transmission shaft of being convenient for finds to set for behind the corner and the transmission shaft power that corresponds combines, just so guarantee before turning to power and cut off and the joint back, angular position between first transmission shaft and the secondary drive axle is unchangeable, turn to the transmission degree of accuracy height, make things convenient for the driver to drive the vehicle.

Thus, the utility model discloses a vehicle is when the multipurpose special type vehicle for can travel on land, can sail again in aqueous, and it can make things convenient for reliable realization steering power is the switching between wheel and corresponding annex, makes the vehicle drive convenient and comfortable more.

In addition, a configuration of being connected with the wheel transmission in first, the second transmission shaft the locking structure is in like this the utility model discloses a vehicle can be when the multipurpose special type vehicle for can travel on land, can sail again in the aquatic, can be with the wheel locking when the vehicle underwater sails.

Drawings

Fig. 1 is a schematic view of a disconnectable steering transmission system in embodiment 1 of a vehicle according to the present invention;

fig. 2 is a schematic structural view of a steering power cut-off device in a coupled state according to embodiment 1 of the vehicle of the present invention;

fig. 3 is a schematic structural view of a steering power cut-off device in an off state according to embodiment 1 of the vehicle of the present invention;

fig. 4 is a schematic structural view of a steering power cut-off device in a coupled state in another embodiment of the vehicle of the present invention;

fig. 5 is a schematic structural view of a steering power cut-off device in another embodiment of the vehicle according to the present invention in an off state;

fig. 6 is a schematic diagram showing a partial structure of embodiment 3 of the vehicle according to the present invention.

In the figure: 1-a steering wheel; 2-a steering column; 3-a steering transmission shaft; a 4-angle diverter; 5-a steering power cut-off; 50-a housing; 500-a drive gear; 501-intermediate gear; 51-a first drive shaft; 52-a second drive shaft; 53-a power-assisted motor; 530-a power-assisted gear; 54-clutch drive mechanism; 540-a stator; 541-a rotor; 550-worm gear and worm pair; 551-lead screw; 552-nut; 56-rotation angle sensor; 560-a first rotation angle sensor; 561-second rotation angle sensor; 57-rotation stopping grooves; 6-a diverter; 60-a steering linkage; 70-a system controller; 71-a spray pump controller; 8-vehicle wheels; 9-spraying pump.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The features and properties of the present invention are described in further detail below with reference to examples.

The utility model discloses an embodiment 1 of vehicle: in this embodiment, the present invention is exemplified by a special vehicle that can travel on land and navigate in water.

Specifically, the vehicle of the embodiment comprises a vehicle body, wherein an engine is arranged in the vehicle body, a corresponding accessory, namely a spray pump, is arranged at the tail part of the vehicle body, the engine is mainly used for driving the vehicle to run on the land, and the spray pump is mainly used for driving the vehicle to run in water. The steering wheel is arranged in a cab of the vehicle body, and is in transmission connection with wheels through the disconnectable steering transmission system in a land running mode, and the steering wheel indirectly controls the steering of the spray pump by relying on the disconnectable steering transmission system in an underwater running mode.

Specifically, as shown in fig. 1, the disconnectable steering transmission system includes a steering wheel 1, a steering column 2 connected to a lower side of the steering wheel 1, steering power of the steering column 2 is transmitted backward to a steering power cut-off device 5 through a steering transmission shaft 3 in cooperation with an angle steering gear 4, a steering gear 6 is connected downstream of the steering power cut-off device 5, and the steering gear 6 is linked to wheels 8 through a steering transmission rod system 60.

In the land driving mode, the system controller 70 controls the steering power cut-off device 5 to be in the engaged state, controls the spray pump controller 71 and the spray pump 9 to be in the stop and non-operation state, and controls the steering power cut-off device 5 to receive the steering power of the steering wheel 1 and transmit the steering power to the steering gear 6 downstream, and when the steering gear 6 outputs the steering power, the steering power can drive the wheels 8 to deflect through the steering transmission rod system 60.

In the underwater navigation mode, the system controller 70 controls the steering power cut-off device 5 to be in an off state, controls the spray pump controller 71 and the spray pump 9 to be in an on state, and controls the steering power cut-off device 5 to be incapable of continuing to transmit to the steering gear 6 downstream after receiving the steering power of the steering wheel 1, at this time, the steering gear 6 and the steering transmission link 60 are not operated, and the wheels 8 are not deflected when the steering wheel is turned. The jet pump controller 71 can sense steering information given by the steering wheel 1 via the steering power cut-off device 5, and then control the jet pump 9 to perform a corresponding steering operation.

Specifically, the steering power cut-off device 5 is structured as shown in fig. 2 to 3, in which the state shown in fig. 2 is a state in which the steering power cut-off device is engaged, that is, the clutch transmission member is engaged with the first transmission shaft, and the state shown in fig. 3 is a state in which the steering power cut-off device is disengaged, that is, the clutch transmission member is disengaged from the first transmission shaft.

The steering power cut-off device 5 includes a housing 50, a first transmission shaft 51 rotatably mounted on the housing 50, and one end of the first transmission shaft 51 extending out of the housing 50 for connecting to an upstream transmission structure and receiving the steering power transmitted from the steering wheel 1. A second transmission shaft 52 is rotatably mounted on the housing 50 of the steering power cut-off device 5, and similarly, one end of the second transmission shaft 52 extends out of the housing for connecting with a downstream transmission structure and transmitting the steering power transmitted from the upstream to the wheels 8. Both the first transmission shaft 51 and the second transmission shaft 52 are coaxially arranged, and protrude from opposite sides of the housing 50.

A clutch transmission member and a clutch driving mechanism for driving the clutch transmission member to move are also disposed in the housing 50. One end of the clutch transmission component is assembled with the rotation stopping plug bush of the second transmission shaft 52, the clutch transmission component and the second transmission shaft can synchronously rotate and can also relatively slide in the axial direction, and the other end of the clutch transmission component and the first transmission shaft 51 are respectively provided with an adaptive rotation stopping plug bush structure. After the clutch driving mechanism drives the clutch transmission component to axially slide relative to the second transmission shaft 52 and is in adaptive splicing with the first transmission shaft 51 through the rotation stopping structure and is in rotation stopping fit, the clutch transmission component is still connected with the second transmission shaft 52, so that power combination between the first transmission shaft and the second transmission shaft is realized through the clutch transmission component. When the clutch driving mechanism drives the clutch transmission component to axially slide relative to the second transmission shaft 52 and the rotation stopping inserting and sleeving relation with the first transmission shaft 51 is released, the power between the first transmission shaft and the second transmission shaft is disconnected.

In order to avoid interference between the clutch transmission component and the clutch driving mechanism when the clutch transmission component realizes power transmission between the first transmission shaft and the second transmission shaft and rotates, the structure of the clutch transmission component is specially designed. The clutch transmission component is shown in fig. 2 and includes a rotor 541 and a stator 540, and the rotor 541 and the stator 540 are rotatably assembled together and relatively fixed in the axial direction. One end of the rotor 541 and the first transmission shaft are respectively provided with a rotation stopping sleeve structure adapted to each other, specifically, the rotation stopping sleeve structure includes a spline groove arranged at an end of the rotor and a spline shaft section arranged at an end of the first transmission shaft 51. The other end of the rotor 541 is provided with an external spline, one end of the second transmission shaft 52 facing the rotor 541 is provided with a spline sleeve structure, and the rotor 541 can realize the rotation stopping insertion sleeve matching between the two through the matching of the external spline and the spline sleeve and also realize the mutual sliding between the two in the axial direction.

That is, the rotor 541 mainly serves to transmit steering power between the first transmission shaft and the second transmission shaft in the clutch transmission member. A roller is interposed between the rotor 541 and the stator 540, and raceways are formed on opposite side surfaces of the rotor and the stator, respectively, to constitute a bearing structure. Of course, in other embodiments, an assembly relationship in which a bearing may be interposed between the two to achieve relative rotation therebetween is not excluded.

The clutch driving mechanism is connected with the stator and drives the clutch transmission part to move, so that the clutch driving mechanism can not influence the rotation action of the clutch transmission part in the transmission process when normal steering power transmission is carried out between the first transmission shaft and the second transmission shaft.

In this embodiment, the clutch driving mechanism is a lead screw nut mechanism, as shown in fig. 2-3, a lead screw 551 of the lead screw nut mechanism is installed in the housing along a direction parallel to the second transmission shaft, and when the lead screw 551 rotates, the lead screw drives the nut 552 to move axially, and the nut 552 is fixedly connected to the stator 540 of the clutch transmission member and drives the clutch transmission member to move.

The lead screw nut mechanism is adopted, the reliability and the precision of the operation of the lead screw nut mechanism are mainly considered, in addition, the lead screw nut mechanism has self-locking characteristics, and the positions of the nut and a clutch transmission part connected with the nut cannot be changed under the condition that the rotation of the lead screw is eliminated. In order to more reliably ensure the position of the clutch transmission component and consider the problem of spatial layout, in this embodiment, a motor is used as a rotary power device to drive the worm-gear pair 550 with the same self-locking performance to be linked with the input end of the lead screw nut mechanism. Of course, the rotary power unit is not limited to the embodiment, and may be a hydraulic motor.

It is convenient to achieve power interruption of a disconnectable steering transmission system by means of the above-described steering power cut-off, and it is more critical how to achieve the recombination of the rotational power transmission by the steering power cut-off.

It is considered that if the steering power is recombined, the direction of the steering wheel does not correspond to the actual deviation direction of the wheels, that is, when the steering wheel is turned back, the wheels are not turned back, which may cause the driver to be unable to accurately grasp the steering corresponding relationship between the steering wheel and the wheels when driving the vehicle, resulting in great driving difficulty and even easy driving accidents. Therefore, when the power combination is realized by the steering power cut-off device, it is necessary to ensure that the circumferential direction of the steering wheel is consistent with the deflection direction of the wheels, that is, the rotation angles of the first transmission shaft and the second transmission shaft are aligned, so that the wheels are also in the aligning state when the steering wheel is aligned. Therefore, in the present embodiment, before the clutch transmission member moves axially to achieve the power coupling of the first transmission shaft and the second transmission shaft, the rotational angles of the first transmission shaft and the second transmission shaft are aligned when necessary.

In the special vehicle of the present embodiment, since the wheels need to be aligned and stored when the special vehicle is traveling on water, the steering wheel 1 needs to be aligned before the system controller 70 controls the steering power cut-off device 5 of the disconnectable power transmission system to cut off the power. In the present embodiment, the first transmission shaft 51 receives power transmitted from the steering wheel and the steering transmission shaft, and transmits the power to the wheel ends from the second transmission shaft. Before the steering wheel 1 is turned right, the rotation angle sensor 56 located outside the first transmission shaft 51, which is a position detection device, can detect the rotation angle information of the current position of the first transmission shaft 51, transmit the current rotation angle information to the system controller 70, and the system controller 70 controls the first transmission shaft 51 to turn to the steering wheel turning state. Specifically, the system controller 70 is configured to adjust the rotation angle of the first transmission shaft through a steering assist mechanism in transmission connection with the first transmission shaft, in this embodiment, the steering assist mechanism is an assist motor 53 shown in the figure, an assist gear 530 is rotatably mounted on the first transmission shaft 51, the assist motor 53 is transmitted to the assist gear 530 and assists the steering action of the first transmission shaft 51, and when the angular position of the first transmission shaft needs to be adjusted, the first transmission shaft is actively driven to rotate. It should be noted that, in the present embodiment, according to the structural design requirement, the first transmission shaft 51 includes two shaft bodies coaxially connected in a rotation-stopping manner, the first shaft body extends out of the housing, and the second shaft body is rotatably assembled in the housing and is used for clutch transmission with the clutch transmission component. The first rotation angle sensor 560 is outside the first shaft and the power gear 530 is mounted on the second shaft.

After the rotation angle sensor 56 detects the alignment of the first transmission shaft 51, the system controller 70 controls the assist motor 53 to stop working and controls the clutch driving mechanism to drive the clutch transmission member to disengage from the first transmission shaft 51, and thereafter, the second transmission shaft 52 is not driven to rotate when the steering wheel is rotated to drive the first transmission shaft 51 to rotate.

In order to facilitate accurate combination of the first transmission shaft and the second transmission shaft, the second transmission shaft is kept at the position unchanged, when the first transmission shaft and the second transmission shaft are required to be combined in a power mode, the system controller 70 controls the power-assisted motor 53 to rotate the first transmission shaft 51 to the corresponding corner position when the steering wheel returns to the positive state again, namely the corner position is set, and then the clutch transmission part is driven to realize combination of the first transmission shaft and the second transmission shaft. In the process of cutting off the power of the first transmission shaft and the second transmission shaft, the second transmission shaft is driven to a corner position enabling the steering wheel to return to the positive position through the first transmission shaft, then the second transmission shaft is separated and is ensured to be positioned at the corner position unchanged, and when the steering wheel is combined, the first transmission shaft firstly rotates to the corner position and then is combined and butted with the second transmission shaft.

Structurally, realize through the locking structure after first, second transmission shaft power separation, lock the second transmission shaft. Specifically, the rotation stopping groove 57 is provided in the housing 50 at a position close to the end of the second transmission shaft 52, the inner circumferential surface of the rotation stopping groove 57 is adapted to the outer circumferential surface of the rotor 541 where the stator is exposed, and both of them are non-circular structures, that is, the rotation stopping groove 57 is in profile fit with the outer circumferential surface of the rotor of the clutch transmission member to realize rotation stopping, so that when the clutch transmission member moves to a position separated from the first transmission shaft, as shown in fig. 3, the rotation stopping groove can keep the angular positions of the clutch transmission member and the second transmission shaft unchanged.

Of course, in order to ensure that the first transmission shaft can be aligned with the angular position of the second transmission shaft before being coupled with the second transmission shaft, a further improvement is made, for example, the rotation angle information of the second transmission shaft can be detected and compared with the rotation angle information of the first transmission shaft, that is, in another embodiment as shown in fig. 4-5, a first rotation angle sensor 560 is disposed on the outer side of the first transmission shaft 51, and a second rotation angle sensor 561 is disposed on the outer side of the second transmission shaft 52. Through the contrast of two corner sensors, can more guarantee that first, second transmission shaft can accurately rotate to the steering wheel and turn right the corresponding corner position department when power separation is about to from power combination, first, second transmission shaft can more accurately rotate to steering wheel and turn right the corresponding corner position department when power combination is about to from power separation.

In addition, in the vehicle of the embodiment, when the vehicle is in the underwater navigation state, the steering power between the first transmission shaft 51 and the second transmission shaft 52 is disconnected, and at this time, the steering wheel 1 is rotated, and the first transmission shaft 51 is still rotated. The first rotation angle sensor 560 can detect the rotation angle of the first transmission shaft 51, determine the steering angle and the steering speed of the steering wheel, transmit the rotation angle and the steering speed to the spray pump controller 71, and control the spray pump 9 to steer through the spray pump controller 71, so that the vehicle can steer when sailing in water.

In this state, since the steering wheel is not subjected to the resistance against the steering 6, the steering gear train 60, and the wheels 8 when turning, the steering wheel is rotated in a nearly idling state, and the assist motor 53 provides an appropriate resistance to allow the driver to operate the steering wheel with the same operating feel as when driving on the road surface in order to prevent the operating feel of the driver from being inappropriate.

The utility model discloses a special vehicle that can satisfy traveling under two kinds of operating modes of land traveling and aquatic navigation that above-mentioned embodiment introduced, through the steering transmission system of breakable, can adapt to the steering operation under two kinds of different form states of land traveling and aquatic navigation, breakable steering transmission system adopts the steering power cutting device of mechanical type, reliable realization steering power is to the switching of wheel and steering wheel to the information transmission route that turns to between the jet pump at the steering wheel, the holistic performance of vehicle has been improved.

Of course, in the above-described embodiment 1 of the vehicle, the rotation angle sensor for detecting the first rotation axis connected to the steering wheel is located in the housing of the steering power cut-off device, and in other embodiments of the vehicle, the rotation angle sensor may be located at the position of the rotation axis of the steering wheel, or at the steering transmission shaft.

The utility model discloses an embodiment 2 of vehicle: in this embodiment, an intelligent vehicle capable of selecting automatic driving and manual driving as needed is taken as an example. The intelligent vehicle of this embodiment is similar to the intelligent vehicle that appears on the market at present, and when manual driving, through driver's control vehicle steering that turns to of steering wheel, when automatic driving, the vehicle is according to the signal automatic steering that vehicle control unit provided, and the power transmission route that turns to between the wheel of steering wheel is in the off-state, can't control the vehicle through the steering wheel and turn to.

The vehicle of the embodiment comprises a vehicle body, wherein a power system and a suspension system are arranged on the vehicle body, wheels are arranged on the suspension system, and the torque output by the power system is transmitted to the wheels through a transmission system. The disconnectable steering transmission system comprises a steering wheel and a steering column connected to the lower side of the steering wheel, steering power of the steering column is backwards transmitted to a steering power cut-off device through a steering transmission shaft and a matching angle steering gear, the downstream of the steering power cut-off device is connected with a steering gear, and the steering gear is linked with wheels through a steering transmission rod system.

Here, the structure of the steering power cut-off device is the same as that of the steering power cut-off device in the vehicle of the above-described embodiment. The disconnectable steering transmission system in the embodiment of the vehicle is different from the disconnectable steering transmission system in the embodiment of the vehicle in that the second transmission shaft of the rotary power cut-off device receives the steering power transmitted from the steering wheel and the steering transmission shaft and transmits the steering power to the wheels through the first transmission shaft, namely, the second transmission shaft is positioned at the upstream of the first transmission shaft, so that after the steering power cut-off device cuts off the steering power transmission relationship between the first transmission shaft and the second transmission shaft, the second transmission shaft cannot rotate together with the steering wheel in transmission connection therewith, and the first transmission shaft and a steering gear, a steering transmission link and the like connected with the downstream of the first transmission shaft can perform steering transmission actions.

When the vehicle described in the upper section is used specifically, the vehicle controller controls the steering power-assisted mechanism to accurately drive the first transmission shaft to rotate according to the road information provided by navigation and the road information detected by the road information detection device arranged on the vehicle body, and the vehicle controller controls the steering power-assisted mechanism to transmit steering power to the wheels downstream according to the corner information detected by the corner sensor, so that the vehicle steering is realized. Because the key of the present invention is not in how the intelligent vehicle realizes automatic driving and how to realize the control of steering during automatic driving, therefore, the detailed description of this part of the contents is not repeated here.

It should be noted that, with the smart vehicle as described in embodiment 2 above, the rotation angle sensor for detecting the first transmission shaft is not necessarily provided in the housing of the rotational power cut-off device, but is provided at a position near the wheel knuckle for detecting the steering of the wheel.

Embodiment 3 of the vehicle of the present invention: as shown in fig. 6, unlike the vehicle of embodiment 1, in this embodiment, the first transmission shaft 51 and the second transmission shaft 52 of the steering power cut-off device included in the disconnectable steering transmission system of the vehicle are not arranged coaxially but arranged in parallel at intervals, in this case, the transmission gears 500 are respectively mounted at the close ends of the two, the clutch transmission member is an intermediate gear 501, the intermediate gear 501 is driven by the clutch driving mechanism 54 to reciprocate in the axial direction, and can be moved to a position where the transmission gears 500 on the first transmission shaft and the second transmission shaft are respectively engaged, and can also be moved to a position where the transmission gears 500 on the first transmission shaft and/or the transmission gears on the second transmission shaft are disengaged, thereby realizing the clutch between the first transmission shaft and the second transmission shaft. Wherein the clutch driving mechanism 54 may be an electric push rod. Fig. 6 is only for explaining the mutual matching relationship among the first and second transmission shafts, the clutch transmission member and the clutch driving mechanism, and therefore, other irrelevant structures are omitted in the drawing. As can be seen from fig. 6, in the present embodiment, the clutch drive mechanism is located outside the housing of the housing steering power cut-off device. Alternatively, in other embodiments, according to the design of the vehicle rotation transmission structure, when the transmission gears of the first and second transmission shafts are located at the same side end of the transmission shaft, the transmission gears of both transmission shafts and the whole clutch device may be located outside the housing.

Embodiment 4 of the vehicle of the present invention: unlike the vehicle in embodiment 1, in this embodiment, the steering power cut-off device included in the disconnectable steering transmission system of the vehicle does not include the steering assist mechanism and the position detection device, and when the steering power needs to be cut off, the steering wheel is manually turned to the return-to-positive state, and then the clutch transmission member is driven to operate by the clutch driving mechanism, so as to realize the power separation between the first transmission shaft and the second transmission shaft, and at this time, the second transmission shaft is locked at the rotation angle position when the steering wheel returns to the positive state by the locking structure. When the first transmission shaft and the second transmission shaft are required to be in power combination, the steering wheel is manually rotated to a return-to-positive state, the rotating angles of the first transmission shaft and the second transmission shaft are considered to be aligned at the moment, and the clutch driving mechanism drives the clutch transmission part to act to realize the power combination between the first transmission shaft and the second transmission shaft.

Embodiment 5 of the vehicle of the utility model: unlike the vehicle in embodiment 1 described above, in this embodiment, the steering power cut-off device included in the disconnectable steering transmission system of the vehicle does not include a steering assist mechanism, and the position detection device is connected to the instrument panel display module of the vehicle and is capable of displaying the angular position information of the first transmission shaft or the steering wheel. When the steering power needs to be cut off, the steering wheel is manually rotated, the corner information detected by the position detection device is observed until the steering wheel rotates to a return-to-positive state, then the clutch driving mechanism drives the clutch transmission part to act, the power separation between the first transmission shaft and the second transmission shaft is realized, and at the moment, the second transmission shaft is locked at the corner position of the steering wheel at the return time by the locking structure. When the first transmission shaft and the second transmission shaft are required to be combined through power, the steering wheel is manually rotated, the corner information detected by the position detection device is observed until the steering wheel rotates to a return-to-positive state, at the moment, the corner of the first transmission shaft and the corner of the second transmission shaft are considered to be aligned, the clutch driving component is driven to move through the clutch driving mechanism, and the power combination between the first transmission shaft and the second transmission shaft is realized.

The utility model discloses an embodiment 6 of vehicle: unlike the vehicle according to embodiment 1 described above, in this embodiment, the position detecting device of the steering power cut-off device included in the disconnectable steering transmission system is not a rotational angle sensor, but a spiral groove is provided on the first transmission shaft, and a slider is connected to the first transmission shaft by means of the spiral groove in a spiral transmission manner, and when the first transmission shaft rotates, the slider can move linearly along the first transmission shaft, and a distance sensor is disposed in correspondence with the slider, and the rotational angle information of the first transmission shaft is converted and determined by sensing the distance between the slider and the slider by means of the distance sensor. Similarly, in other embodiments, the position detecting device may be an encoder mounted on the corresponding drive shaft.

Embodiment 7 of the vehicle of the present invention: unlike the vehicle of embodiment 1 described above, in embodiment 1 of the vehicle, the rotation angle sensor as the position detecting means is used for detecting the angular position of the first transmission shaft to determine whether the first transmission shaft is rotated to the set rotation angle position, and is also used for providing the steering information to the system control system according to the steering information transmitted from the steering wheel to the first transmission shaft after the power of the first transmission shaft and the power of the second transmission shaft are separated, so as to control the steering of the spray pump, and in embodiment 7, the auxiliary position detecting means for detecting the first transmission shaft is additionally added to the disconnectable steering transmission system of the vehicle of embodiment 1, and the auxiliary position detecting means is used for detecting the steering information of the first transmission shaft, that is, the steering information of the steering wheel, and is provided to the controller to control the steering of the spray pump. Of course, the sub-position detecting device may also take the form as exemplified in embodiment 6.

The utility model discloses an embodiment 8 of vehicle: different from the vehicle in embodiment 1, the clutch device is a conventional electromagnetic clutch, and the internal force transmission armature iron thereof drives the action through electromagnetic acting force instead of mechanical transmission, so that clutch switching is realized. In a similar deformation mode, the clutch device can also adopt a hydraulic clutch or a magnetic powder clutch or a friction clutch and the like.

In the above-described embodiment of the vehicle, the circumferential direction of the rotor of the clutch transmission member is locked by the rotation stopping groove in the housing of the steering power cut-off device after being disengaged from the first transmission shaft to lock the circumferential direction of the second transmission shaft. Alternatively, in an embodiment, a locking groove is formed on the outer peripheral surface of the rotor, which is exposed from the stator, a locking piece is correspondingly arranged in the housing, and when the rotor of the clutch transmission member is axially separated from the first transmission shaft in a circumferential direction corresponding to the return-to-normal state of the steering wheel, the locking piece in the housing can slide into the sliding groove to lock the rotor of the clutch transmission member and the second transmission shaft in the circumferential direction.

In the above described embodiment of the vehicle, the clutch transmission part included in the steering power cut-off device includes a bearing structure, in other embodiments, the clutch transmission part may be a clutch transmission shaft having a disk surface extending radially outward in the middle, the structure of the two ends of the clutch transmission shaft for being respectively matched with the first transmission shaft and the second transmission shaft is the same as the structure of the two ends of the rotor for being matched with the first transmission shaft and the second transmission shaft in embodiment 1, a shift fork is fixed on a nut of the screw nut mechanism, the shift fork clamps the disk surface portion of the middle portion of the clutch transmission shaft inside, and when the nut moves, the clutch transmission shaft is driven to move by the shift fork, and in order to eliminate friction between the shift fork and the disk surface portion of the clutch transmission shaft, a ball may be clamped between the shift fork and the disk surface portion.

In the above-described embodiment 1 of the vehicle, the second transmission shaft is locked by the locking structure after the first transmission shaft is separated from the power source, in other embodiments, for example, when the locking structure is an electromagnetic lock pin, an axially extending chute may be provided on the outer circumferential surface of the rotor, after the first and second transmission shafts rotate to a set angular position, the electromagnetic lock pin extends out and is clamped into the chute to lock the rotor and the second transmission shaft, and then the rotor is driven by the clutch driving device to move to realize the separation from the first transmission shaft. Alternatively, when the clutch device is not the clutch device used in embodiment 1, the second transmission shaft may be locked by the locking structure after the first and second transmission shafts rotate to the set rotational angle position, and then the clutch device operates to realize the power separation between the first and second transmission shafts.

Alternatively, in an implementation manner of the present invention, the clutch driving mechanism may also adopt a driving mechanism including other linear output mechanisms, for example, a speed reduction motor and a cam push rod mechanism, the speed reduction motor drives the cam to rotate, the clutch transmission member is connected to the push rod, and the push rod drives the clutch transmission member to move when the cam rotates, so as to implement power combination and separation between the first transmission shaft and the second transmission shaft.

In the above embodiment, the steering assist mechanism for providing steering to the first transmission shaft is an assist motor, and in other embodiment modes, the steering assist mechanism may adopt a hydraulic motor, and an output shaft of the hydraulic motor is in meshing transmission with an assist gear through a gear.

In the above embodiment, the spray pump controller and the system controller are two independent control modules, and in other embodiments, the functions of the spray pump controller and the system controller may also be realized by the whole vehicle controller in a unified manner, that is, the spray pump controller and the system controller are not independently arranged any more and are replaced by the whole controller.

The utility model discloses the embodiment of breakable steering transmission system is still provided: the specific structure of the steering gear system is the same as that of the disconnectable steering transmission system in the various embodiments of the vehicle, and the detailed description is omitted here.

The utility model discloses still provide the embodiment of steering power cutting device: the specific structure thereof is the same as that of the steering power cut-off device in the above-described various embodiments of the vehicle, and the detailed description thereof is omitted.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. A steering power cut-off device, comprising:

a housing;

2. The steering power cut-off device according to claim 1, wherein the clutch device includes: the clutch transmission part is movably arranged in the shell and can realize power combination and power separation of the first transmission shaft and the second transmission shaft in the movable stroke;

the clutch driving mechanism is fixedly connected or blocked with the clutch transmission part so as to drive the clutch transmission part to combine or separate the first transmission shaft and the second transmission shaft.

3. The steering power cut-off device according to claim 2, wherein the first and second transmission shafts are coaxially arranged, and the clutch transmission member has a plug-in structure for engaging with the rotation-stopping plug bushes of the first and second transmission shafts, and is axially slidable along the first and second transmission shafts, and is axially disengaged from one of the first and second transmission shafts by sliding to thereby achieve power cut-off.

4. The steering power cut-off device according to claim 3, wherein the clutch transmission member comprises a stator and a rotor which are rotatably assembled together, the stator and the rotor are relatively fixed in the axial direction, the output end of the clutch driving mechanism is connected with the stator, and the plug-in structure is arranged on the rotor of the clutch transmission member.

5. The steering power cut-off device according to claim 3, wherein the locking structure is a rotation stopping groove provided in the housing, and after the clutch transmission member is moved to a position where it is disengaged from one of the first and second transmission shafts, the rotor of the clutch transmission member enters the rotation stopping groove and rotation stopping is achieved by a profile engagement of an outer side surface of the rotor with the rotation stopping groove.

6. The steering power cut-off device according to claim 3, wherein the clutch drive mechanism includes a lead screw-nut mechanism, and a nut of the lead screw-nut mechanism is connected to the clutch transmission member and causes the clutch transmission member to slide axially.

7. The steering power cut-off device according to claim 6, wherein the input end of the lead screw nut mechanism is drivingly connected with a rotational power device through a worm gear mechanism.

8. The steering power cut-off device according to any one of claims 1 to 7, wherein one of the first and second transmission shafts, to which the lock structure is not provided, is provided with position detection means for detecting rotational angle information.

9. The steering power cut-off device according to claim 8, further comprising a power steering mechanism, wherein the power steering mechanism is in transmission connection with one of the first and second transmission shafts, which is not provided with the locking structure, and is configured to drive the corresponding transmission shaft to rotate to the set rotation angle before the first and second transmission shafts are separated from each other and to rotate to the set rotation angle before the first and second transmission shafts are combined with each other, according to the rotation angle information detected by the position detection device.

10. The steering power cut-off device according to claim 8, wherein the position detecting means is a rotation angle sensor.

11. The steering power cut-off device according to any one of claims 1 to 7, wherein the set steering angle is a steering angle at a wheel turning timing.

12. A disconnectable steering transmission system, comprising:

the steering power cut-off device according to any one of claims 1 to 11.

13. The disconnectable steering transmission system according to claim 12, further comprising:

the auxiliary steering driving mechanism is used for controlling the steering of the corresponding accessory;

the controller is connected with the position detection device and the auxiliary steering driving mechanism when one of the first transmission shaft and the second transmission shaft, which is not provided with the locking structure, is provided with the position detection device for detecting the steering angle information;

one of the first transmission shaft and the second transmission shaft which is not provided with the locking structure is in transmission connection with the steering transmission shaft and rotates when the steering wheel rotates, the position detection device provides the detected corner information to the controller, and the controller controls the auxiliary steering driving mechanism to drive the corresponding accessory to steer according to the corner signal.

14. The disconnectable steering transmission system according to claim 12, further comprising:

the auxiliary position detection device is used for detecting the rotation angle information of one of the first transmission shaft and the second transmission shaft which is not provided with the locking structure;

the controller is connected with the auxiliary position detection device and the auxiliary steering driving mechanism;

one of the first transmission shaft and the second transmission shaft which is not provided with the locking structure is in transmission connection with the steering transmission shaft, and rotates when the steering wheel rotates, the auxiliary position detection device provides the corner information to the controller, and the controller controls the auxiliary steering driving mechanism to drive the corresponding accessory to steer according to the corner signal.

15. A disconnectable steering transmission according to claim 12, wherein one of the first and second transmission shafts for driving connection with the wheels is provided with said locking structure.

16. A vehicle comprises a frame, and is characterized in that:

a disconnectable steering transmission system is configured on the frame, and comprises:

the steering power cut-off device according to any one of claims 1 to 11.

17. The vehicle of claim 16, further comprising:

the controller is connected with the position detection device and the auxiliary steering driving mechanism;

18. The vehicle of claim 16, further comprising:

a sub position detection device for detecting rotational angle information of the first transmission shaft;

19. The vehicle of claim 16, wherein one of the first and second drive shafts drivingly connected to the wheel is provided with the locking structure.