CN115009406A - Electric vehicle front fork mechanism with built-in damping mechanism and damping method thereof - Google Patents
Electric vehicle front fork mechanism with built-in damping mechanism and damping method thereof Download PDFInfo
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- CN115009406A CN115009406A CN202210647071.5A CN202210647071A CN115009406A CN 115009406 A CN115009406 A CN 115009406A CN 202210647071 A CN202210647071 A CN 202210647071A CN 115009406 A CN115009406 A CN 115009406A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 64
- 238000013016 damping Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims abstract description 110
- 238000003780 insertion Methods 0.000 claims abstract description 39
- 230000037431 insertion Effects 0.000 claims abstract description 39
- 230000035939 shock Effects 0.000 claims description 90
- 239000006096 absorbing agent Substances 0.000 claims description 60
- 239000003921 oil Substances 0.000 claims description 58
- 239000010720 hydraulic oil Substances 0.000 claims description 22
- 230000001502 supplementing effect Effects 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K21/00—Steering devices
- B62K21/08—Steering dampers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K21/00—Steering devices
- B62K21/02—Front wheel forks or equivalent, e.g. single tine
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- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
The invention relates to an electric vehicle front fork mechanism with a built-in damping mechanism and a damping method thereof, and the electric vehicle front fork mechanism comprises a front insertion column, a connecting bridge, a pressure regulating cavity, a hydraulic damper, a front insertion arm, a guide sleeve, a torsion bar and a ratchet mechanism, wherein the lower end face of the front insertion column is hinged with the outer surface of the connecting bridge through the ratchet mechanism, the torsion bar is embedded in the connecting bridge, two ends of the torsion bar are respectively hinged with the upper end face of the front insertion arm through the ratchet mechanism, the front insertion arm is connected with the hydraulic damper through the guide sleeve, and the lower end face of the hydraulic damper is further connected with one guide sleeve. The damping method comprises three steps of equipment preassembly, vehicle assembly, vehicle damping and the like. The invention effectively overcomes the defect that the traditional vehicle front fork only can absorb the impact force in a single direction, thereby further improving the flexibility, the universality and the reliability of the use of the front fork equipment.
Description
Technical Field
The invention relates to an electric vehicle front fork mechanism with a built-in damping mechanism and a damping method thereof, and belongs to the technical field of electric vehicle equipment.
Background
In the current two-wheel and three-wheel electric vehicle structure, the front wheel is fixedly installed through the front fork equipment, in order to meet the requirement, a large amount of front fork equipment is developed at present, the front fork equipment can absorb shock caused by factors such as the road surface when the vehicle runs while the wheels are installed and positioned, and the running comfort of the electric vehicle is improved, but in the actual use, although the current front fork equipment is provided with the shock absorption structure based on the structures such as the spring column, the hydraulic column and the air pressure column, the shock absorption structure can only meet the requirement of elastically absorbing the shock acting force parallel to the axis of the shock absorption structure when the shock absorption structure is in shock absorption operation, and meanwhile, the shock acting force applied to the front wheel of the vehicle in the running process often forms a certain included angle with the axis of the shock absorption structure, so that the shock absorption effect is greatly limited when the current shock absorption structure runs, therefore, the running stability and the riding comfort of the vehicle are greatly influenced;
meanwhile, when the front fork equipment used by the current electric vehicle is used and operated, on one hand, the included angles between the front fork and a damping structure connected with the front fork and the driving direction and the horizontal plane of the vehicle cannot be flexibly adjusted according to the use requirement; on the other hand is when moving, and the shock attenuation effort when current front fork shock-absorbing structure can't adjust the shock attenuation operation in a flexible way according to the use needs, has consequently led to the flexibility and the commonality that current electric motor car front fork structure used relatively poor, and the shock attenuation effect also receives great influence.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the front fork mechanism of the electric vehicle with the built-in damping mechanism and the damping method thereof, which effectively overcome the defect that the traditional front fork of the vehicle can only damp impact acting force in a single direction, and further improve the flexibility, the universality and the reliability of the use of front fork equipment.
An electric vehicle front fork mechanism with a built-in damping mechanism comprises a front insertion column, a connecting bridge frame, a pressure regulating cavity, a hydraulic damper, a front insertion arm, a guide sleeve, a torsion bar, a pressure regulating valve and a ratchet mechanism, wherein the lower end face of the front insertion column is hinged with the outer surface of the connecting bridge frame through the ratchet mechanism and forms an included angle of 0-90 degrees with the connecting bridge frame, the connecting bridge frame is of a hollow cylindrical cavity structure with a rectangular axial section, the torsion bar is embedded in the connecting bridge frame and is distributed in parallel with the axis of the connecting bridge frame, two ends of the torsion bar are respectively hinged with the upper end faces of the front insertion arms through the ratchet mechanism, the ratchet mechanism is respectively connected with the left end face and the right end face of the connecting bridge frame, the two front insertion arms are distributed in parallel with each other and are distributed vertically with the axis of the connecting bridge frame, the lower end faces of the front insertion arms are embedded in the guide sleeve and are connected with the hydraulic damper through the guide sleeve, and the lower end face of the hydraulic damper is connected with the guide sleeve, hydraulic shock absorber, preceding insert the arm, the mutual parallel distribution of axis between the uide bushing, a water conservancy diversion mouth is established in addition to the hydraulic shock absorber up end, the water conservancy diversion mouth passes through honeycomb duct and pressure regulating chamber intercommunication, the pressure regulating chamber is axis and the closed cavity structure who is connected crane span structure axis parallel distribution, with be connected bridge side surface connection, a pressure regulating mouth is all established to pressure regulating chamber left surface and right flank, and the pressure regulating mouth communicates through the water conservancy diversion mouth of honeycomb duct with hydraulic shock absorber respectively, a oiling mouth is established in addition to pressure regulating chamber mid point position department, control both sides pressure regulating mouth and mid point position oiling mouth department and all establish an air-vent valve.
Further, the pressure regulating cavity include hydro-cylinder, pressure regulating piston, belleville spring, pressure sensor and binding post, the hydro-cylinder is the closed cavity structure of rectangle for axial cross section, one pressure regulating mouth with the coaxial distribution of hydro-cylinder is all established to hydro-cylinder left end face and right-hand member face, and the position is established oiling mouth axis and perpendicular distribution of hydro-cylinder axis and is intersected in the hydro-cylinder, the pressure regulating piston is totally two, inlays and symmetric distribution in oiling mouth axis both sides in the hydro-cylinder, pressure regulating piston and hydro-cylinder coaxial distribution and with hydro-cylinder lateral wall internal surface sliding connection, interval is not less than 1.5 times of oiling mouth diameter between two pressure regulating piston rear end faces, and each pressure regulating piston rear end face passes through belleville spring and is connected with the hydro-cylinder medial surface, just belleville spring and hydro-cylinder coaxial distribution are connected through the constant head tank with the coaxial distribution of hydro-cylinder, pressure sensor rather than coaxial distribution is all established to pressure regulating piston rear end face in addition, the pressure sensors are electrically connected with the wiring terminals, and the wiring terminals are embedded on the outer side surface of the oil cylinder and are electrically connected with the pressure regulating valves.
Furthermore, the rear end face of the pressure regulating piston is provided with a buffer cavity which is coaxially distributed with the pressure regulating piston, the pressure sensors are embedded in the buffer cavity and connected with the bottom of the buffer cavity, and the pressure sensors of the two pressure regulating pistons are connected with each other through a buffer spring which is coaxially distributed with the pressure regulating piston.
Furthermore, the oil cylinder is connected with any position of the outer side surface and the inner side surface of the connecting bridge frame through a connecting mechanism, oil supplementing ports are additionally arranged on the left end surface and the right end surface of the oil cylinder, the oil supplementing ports are communicated with the oil filling port through a flow guide branch pipe, and the flow guide branch pipe is communicated with the oil supplementing ports and the oil filling port through a control valve.
Furthermore, the guide sleeve comprises an outer sheath, a disc spring, two guide slide rails, a sliding block, a positioning pin and an elastic hinge, wherein the outer sheath is of a cylindrical groove body structure with an H-shaped axial section, the two guide slide rails are arranged in groove bodies on the upper end surface and the lower end surface of the outer sheath, each guide slide rail is distributed in parallel with the axis of the outer sheath and symmetrically distributed on two sides of the axis of the outer sheath, the sliding block is embedded in the groove body of the outer sheath and is in sliding connection with the guide slide rails, a plurality of pin holes distributed along the axis direction of the outer sheath are formed in the side wall of the outer sheath corresponding to the sliding block, the sliding block is connected with the pin holes through at least one positioning pin, meanwhile, the lower end surface of the sliding block abuts against the bottom of the outer sheath through the disc spring, and the upper end surface of the sliding block is further connected with the hydraulic shock absorber and the front insertion arm through the elastic hinge.
Furthermore, the front insertion column and the front insertion arm are both of a cylindrical structure with a rectangular axial cross section, wherein the length of the front insertion arm is 1/4-1/2 of the length of the hydraulic shock absorber, guide sleeves connected to the two ends of the hydraulic shock absorber are connected through a damping spring, the axis of the damping spring is parallel to the axis of the hydraulic shock absorber, and the two ends of the damping spring are respectively connected with the outer surface of the guide sleeve.
A damping method of a front fork mechanism of an electric vehicle with a built-in damping mechanism comprises the following steps:
s1, pre-assembling equipment, namely assembling and assembling the front inserting column, the connecting bridge frame, the pressure regulating cavity, the hydraulic shock absorber, the front inserting arm, the guide sleeve, the torsion bar, the pressure regulating valve and the ratchet mechanism, adjusting the relative positions of the front inserting arm, the hydraulic shock absorber and the guide sleeve according to the structure of a vehicle in the assembling process, enabling the front inserting column and the connecting bridge frame to be vertically connected with each other to obtain a finished front fork, filling hydraulic oil into the pressure regulating cavity and the hydraulic shock absorber, regulating the oil pressure of the hydraulic oil, and maintaining the pressure to obtain the finished front fork;
s2, assembling the vehicle, after the step S1 is completed, connecting a finished front fork with the body of the electric vehicle through a front insertion column, simultaneously electrically connecting a wiring terminal with a driving circuit of the electric vehicle, finally connecting and assembling a guide sleeve connected with the lower end face of a hydraulic damper with the wheel of the electric vehicle through a connecting mechanism, and then adjusting included angles among the hydraulic damper, a front insertion arm, the guide sleeve and the horizontal plane through a ratchet mechanism to complete vehicle assembling operation;
s3, damping the vehicle, wherein during the running of the vehicle, on one hand, the hydraulic shock absorber elastically absorbs and damps the impact acting force which is applied to the vehicle and distributed in parallel with the axial direction of the hydraulic shock absorber, so that the direct impact on the front side of the vehicle is damped; on the other hand, the torsion bar elastically absorbs and damps the impact force of which the axial line clip angle of the hydraulic damper is greater than 0 degree, so that the oblique impact vibration generated when the vehicle runs is damped, and the aim of comprehensively damping the impact force generated when the vehicle runs is fulfilled; meanwhile, in the damping process, the pressure regulating cavity is matched with the control valve, on one hand, the change of the oil pressure of the hydraulic oil is detected when the hydraulic damper is impacted through the pressure sensor, so that the actual value of the impact force borne by the running vehicle is obtained, the driving circuit of the electric vehicle drives the pressure regulating system of the vehicle to run according to the actual impact force borne, the pressure and the hydraulic oil quantity of the hydraulic oil between the two pressure regulating pistons in the oil cylinders of the hydraulic damper and the pressure regulating cavity are regulated, and the aim of regulating the damping performance of the front fork according to the running condition of the vehicle is achieved.
Further, in the step S2, when the front fork and the electric vehicle are assembled, another electric vehicle is equipped with a booster pump and a hydraulic tank communicated with the booster pump, wherein the booster pump is respectively communicated with the pressure regulating cavity and the hydraulic shock absorber through a pressure regulating valve.
The invention has flexible and convenient use and good universality, can effectively meet the matching use requirement of various electric vehicles, and compared with the traditional electric vehicle front fork equipment in operation, the invention can effectively overcome the defect that the traditional vehicle front fork can only absorb the impact acting force in a single direction while meeting the requirements of the traditional electric vehicle front fork on wheel installation and shock absorption operation, greatly improves the reliability and shock absorption effect of the shock absorption operation, and effectively and flexibly adjusts the shock absorption acting force and the vehicle front fork installation layout structure according to the use requirement, thereby further improving the flexibility, the universality and the reliability of the use of the front fork equipment.
Drawings
The invention is described in detail below with reference to the drawings and the detailed description;
FIG. 1 is a schematic view of a partial structure of the present invention;
FIG. 2 is a schematic view of a partial structure of a pressure regulating chamber;
fig. 3 is a schematic structural view of the guide sleeve.
The hydraulic control system comprises a front inserting column 1, a connecting bridge frame 2, a pressure regulating cavity 3, a hydraulic shock absorber 4, a front inserting arm 5, a guide sleeve 6, a torsion bar 7, a pressure regulating valve 8, a ratchet mechanism 9, a buffer spring 10, an oil supplementing port 11, a control valve 12, a pressure regulating port 31, an oil filling port 32, an oil cylinder 33, a pressure regulating piston 34, a disc spring 35, a pressure sensor 36, a wiring terminal 37, a positioning groove 38, a buffer cavity 39, a flow guide port 41, a flow guide pipe 42, a flow guide branch pipe 43, an outer sheath 61, a guide sliding rail 62, a sliding block 63, a positioning pin 64, an elastic hinge 65 and a pin hole 66.
Detailed Description
In order to facilitate the implementation of the technical means, creation features, achievement of the purpose and the efficacy of the invention, the invention is further described below with reference to specific embodiments.
As shown in figure 1, the front fork mechanism of the electric vehicle with the built-in damping mechanism comprises a front inserting column 1, a connecting bridge frame 2, a pressure regulating cavity 3, a hydraulic damper 4, a front inserting arm 5, a guide sleeve 6, a torsion bar 7, a pressure regulating valve 8 and a ratchet mechanism 9, wherein the lower end face of the front inserting column 1 is hinged with the outer surface of the connecting bridge frame 2 through the ratchet mechanism 9 and forms an included angle of 0-90 degrees with the connecting bridge frame 2, the connecting bridge frame 2 is of a hollow cylindrical cavity structure with a rectangular axial section, the torsion bar 7 is embedded in the connecting bridge frame 2 and is distributed in parallel with the axis of the connecting bridge frame 2, two ends of the torsion bar 7 are respectively hinged with the upper end face of the front inserting arm 5 through the ratchet mechanism 9, the ratchet mechanism 9 is respectively connected with the left end face and the right end face of the connecting bridge frame 2, the two front inserting arms 5 are distributed in parallel with each other and are distributed perpendicular to the axis of the connecting bridge frame 2, the lower end face of the front inserting arm 5 is embedded in the guide sleeve 6, the hydraulic damper is connected with a hydraulic damper 4 through a guide sleeve 6, the lower end face of the hydraulic damper 4 is further connected with a guide sleeve 6, the hydraulic damper 4, a front insertion arm 5 and the guide sleeve 6 are distributed in parallel with each other on the axis, a flow guide port 41 is further arranged on the upper end face of the hydraulic damper 4, the flow guide port 41 is communicated with a pressure regulating cavity 3 through a flow guide pipe 42, the pressure regulating cavity 3 is a closed cavity structure with the axis parallel to the axis of a connecting bridge frame 2 and is connected with the side surface of the connecting bridge frame 2, pressure regulating ports 31 are respectively arranged on the left side face and the right side face of the pressure regulating cavity 3, the pressure regulating ports 31 are respectively communicated with the flow guide port 41 of the hydraulic damper 4 through the flow guide pipe 42, an oil injection port 32 is further arranged at the middle point of the pressure regulating cavity 3, and a pressure regulating valve 8 is respectively arranged at the positions of the pressure regulating ports 31 on the left side and the right side and the oil injection port 32.
In this embodiment, referring to fig. 2, the pressure regulating cavity 3 includes an oil cylinder 33, pressure regulating pistons 34, disk springs 35, a pressure sensor 36 and a connection terminal 37, the oil cylinder 33 is a closed cavity structure with a rectangular axial cross section, the left end surface and the right end surface of the oil cylinder 33 are respectively provided with a pressure regulating port 31 which is coaxially distributed with the oil cylinder 33, the middle point position of the oil cylinder 33 is provided with an oil filling port 32 axis which is vertically distributed with and intersected with the axis of the oil cylinder 33, the two pressure regulating pistons 34 are embedded in the oil cylinder 33 and symmetrically distributed on two sides of the oil filling port 32 axis, the pressure regulating pistons 34 and the oil cylinder 33 are coaxially distributed and are in sliding connection with the inner surface of the side wall of the oil cylinder 33, the distance between the rear end surfaces of the two pressure regulating pistons 34 is not less than 1.5 times of the diameter of the oil filling port 32, the rear end surfaces of the pressure regulating pistons 34 are connected with the inner surface of the oil cylinder 33 through the disk springs 35, and the disk springs 35 and the oil cylinder 33 are coaxially distributed and are connected through positioning grooves 38 which are coaxially distributed with the oil cylinder 33, the rear end face of the pressure regulating piston 34 is also provided with a pressure sensor 36 which is coaxially distributed with the pressure regulating piston, the pressure sensors 36 are electrically connected with a wiring terminal 37, and the wiring terminal 37 is embedded on the outer side face of the oil cylinder 33 and is electrically connected with each pressure regulating valve 8.
It should be specially mentioned that, the rear end face of the pressure regulating piston 34 is provided with a buffer cavity 39 coaxially distributed with the pressure regulating piston, the pressure sensors 36 are embedded in the buffer cavity 39 and connected at the bottom of the buffer cavity 39, and the pressure sensors 36 of the two pressure regulating pistons 34 are connected with each other through a buffer spring 10 coaxially distributed with the pressure regulating piston 34.
Meanwhile, the oil cylinder 33 is connected with any position of the outer side surface and the inner side surface of the connecting bridge frame 2 through a connecting mechanism, oil supplementing ports 11 are additionally arranged at the left end surface and the right end surface of the oil cylinder 33, the oil supplementing ports 11 are additionally communicated with the oil filling port 32 through a flow guide branch pipe 43, and the flow guide branch pipe 43 is communicated with the oil supplementing ports 11 and the oil filling port 32 through a control valve 12.
When the adjusting cavity operates, firstly, hydraulic oil is filled into the pressure adjusting cavity 3 and the hydraulic shock absorber 4 through the pressure adjusting valve 8 and pressure is maintained, so that the requirement of basic operation of the electric vehicle is met, when the hydraulic shock absorber 4 contracts under acting force during the operation of the vehicle, hydraulic oil in the hydraulic shock absorber 4 is extruded and pressurized, meanwhile, the hydraulic oil synchronously flows back into the oil cylinder 33 of the pressure adjusting cavity 3 and drives the sliding block 63 on one side of the oil cylinder 33 to displace, so that on one hand, the impact force intensity of the current vehicle is detected through the pressure sensor 36, on the other hand, the impact force of the current hydraulic shock absorber 4 is elastically absorbed through the hydraulic oil cached between the two pressure adjusting pistons 34 in the oil cylinder 33 and the elastic acting force of the buffer spring 10 between the two pressure adjusting pistons 34, and the shock absorption and impact resistance capability is further improved; on the other hand, when the two hydraulic shock absorbers 4 are stressed unevenly due to factors such as impact action, the two pressure regulating pistons 34 in the oil cylinder 33 simultaneously deflect to one side with low oil pressure along the axial direction of the oil cylinder 33, so that the bearing pressure of the two hydraulic shock absorbers 4 is averaged, and the slipping and rollover of the vehicle caused by the reduction of the grip force due to uneven stress of wheels are prevented;
in addition, referring to fig. 3, the guide sleeve 6 includes an outer sheath 61, a disk spring 35, a guide slide rail 62, a slide block 63, a positioning pin 64, and an elastic hinge 65, wherein the outer sheath 61 is a cylindrical groove structure with an H-shaped axial cross section, two guide slide rails 62 are respectively disposed in grooves of an upper end surface and a lower end surface of the outer sheath 61, each guide slide rail 62 is parallel to and symmetrically disposed on two sides of an axis of the outer sheath 61, the slide block 63 is embedded in the groove of the outer sheath 61 and is slidably connected to the guide slide rail 62, a plurality of pin holes 66 are disposed on a side wall of the outer sheath 61 corresponding to the slide block 63, the slide block 63 is connected to the pin holes 66 through at least one positioning pin 64, a lower end surface of the slide block 63 abuts against a groove bottom of the outer sheath 61 through the disk spring 35, an upper end surface of the slide block 63 is respectively connected to the hydraulic shock absorber 4 through the elastic hinge 65, The front insertion arm 5 is connected.
The flexibility of connection adjustment between the guide sleeve 6 and the hydraulic shock absorber 4 and between the guide sleeve and the front insertion arm 5 is effectively improved through the arranged guide slide rail 62, the slide block 63 and the positioning pin 64, and the purpose of adjusting the overall height of the front fork is achieved by adjusting the depth of the hydraulic shock absorber 4 and the front insertion arm 5 embedded into the outer sheath 61; the disc spring 35 and the elastic hinge 65 prevent the outer sheath 61, the hydraulic shock absorber 4 and the front insertion arm 5 from being damaged due to impact caused by rigid direct connection when a vehicle runs.
In this embodiment, the front insertion column 1 and the front insertion arm 5 are both of a cylindrical structure with a rectangular axial cross section, wherein the length of the front insertion arm 5 is 1/4-1/2 of the length of the hydraulic shock absorber 4, and meanwhile, the guide sleeves 6 connected to the two ends of the hydraulic shock absorber 4 are connected through a damping spring, the axis of the damping spring is parallel to the axis of the hydraulic shock absorber 4, and the two ends of the damping spring are respectively connected with the outer surface of the guide sleeve 6.
A damping method of a front fork mechanism of an electric vehicle with a built-in damping mechanism comprises the following steps:
s1, pre-assembling equipment, namely assembling the front inserting column 1, the connecting bridge frame 2, the pressure regulating cavity 3, the hydraulic shock absorber 4, the front inserting arm 5, the guide sleeve 6, the torsion bar 7, the pressure regulating valve 8 and the ratchet mechanism 9, adjusting the relative positions of the front inserting arm 5, the hydraulic shock absorber 4 and the guide sleeve 6 according to the vehicle structure in the assembling process, simultaneously enabling the front inserting column 1 and the connecting bridge frame 2 to be mutually and vertically connected to obtain a finished front fork, simultaneously filling hydraulic oil into the pressure regulating cavity 3 and the hydraulic shock absorber 4, and maintaining the pressure after adjusting the hydraulic oil pressure to obtain the finished front fork;
s2, assembling the vehicle, after the step S1 is completed, connecting a finished front fork with the body of the electric vehicle through the front insertion column 1, simultaneously electrically connecting the wiring terminal 37 with a driving circuit of the electric vehicle, finally connecting and assembling the guide sleeve 6 connected with the lower end face of the hydraulic shock absorber 4 and the wheel of the electric vehicle through a connecting mechanism, and then adjusting the included angles among the hydraulic shock absorber 4, the front insertion arm 5, the guide sleeve 6 and the horizontal plane through the ratchet mechanism 9 to complete the assembling operation of the vehicle;
s3, damping the vehicle, wherein during the running of the vehicle, on one hand, the hydraulic shock absorber 4 elastically absorbs and damps the impact acting force which is applied to the vehicle and distributed in parallel with the axial direction of the hydraulic shock absorber 4, so that the direct impact on the front side of the vehicle is damped; on the other hand, the torsion bar 7 elastically absorbs and damps the impact force with the included angle of the axes of the hydraulic damper 4 larger than 0 degree, so that the oblique impact vibration generated when the vehicle runs is damped, and the aim of comprehensively damping the impact force generated when the vehicle runs is fulfilled; meanwhile, in the damping process, the pressure regulating cavity 3 is matched with the control valve 12, on one hand, the change of the oil pressure of the hydraulic oil is detected when the hydraulic damper 4 is impacted through the pressure sensor, so that the actual value of the impact force borne by the running vehicle is obtained, the electric vehicle driving circuit drives the running vehicle pressure regulating system to regulate the pressure and the hydraulic oil quantity of the hydraulic oil between the two pressure regulating pistons 34 in the oil cylinders 33 of the hydraulic damper 4 and the pressure regulating cavity 3 according to the actual impact force borne, and the aim of regulating the damping performance of the front fork according to the running condition of the vehicle is achieved.
In particular, in the step S2, when the front fork and the electric vehicle are assembled, a booster pump and a hydraulic tank communicated with the booster pump are separately provided, wherein the booster pump is respectively communicated with the pressure regulating chamber 3 and the hydraulic shock absorber 4 through the pressure regulating valve 8.
Through the arranged booster pump and the hydraulic tank communicated with the booster pump, in the running process of the electric vehicle, on one hand, hydraulic oil cached in the hydraulic tank is pressurized by the booster pump and then is conveyed into the pressure regulating cavity and the hydraulic shock absorber, and the pressure of the hydraulic oil in the pressure regulating cavity and the hydraulic shock absorber is increased, so that the running rigidity of the shock absorber is improved, and the bearing capacity is improved; on the other hand, hydraulic oil in the pressure regulating cavity and the hydraulic shock absorber is conveyed to the hydraulic tank through the booster pump, so that the pressure of the hydraulic oil in the pressure regulating cavity and the hydraulic shock absorber is reduced, the elasticity of the shock absorber during operation is improved, and the shock absorption performance is improved.
The invention has flexible and convenient use and good universality, can effectively meet the matching use requirement of various electric vehicles, and compared with the traditional electric vehicle front fork equipment in operation, the invention can effectively overcome the defect that the traditional vehicle front fork can only absorb the impact acting force in a single direction while meeting the requirements of the traditional electric vehicle front fork on wheel installation and shock absorption operation, greatly improves the reliability and shock absorption effect of the shock absorption operation, and effectively and flexibly adjusts the shock absorption acting force and the vehicle front fork installation layout structure according to the use requirement, thereby further improving the flexibility, the universality and the reliability of the use of the front fork equipment.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides an electric motor car front fork mechanism of built-in damper which characterized in that: the front fork mechanism of the electric vehicle with the built-in damping mechanism comprises a front insertion column (1), a connecting bridge frame (2), a pressure regulating cavity (3), a hydraulic damper (4), front insertion arms (5), a guide sleeve (6), a torsion bar (7), a pressure regulating valve (8) and a ratchet mechanism (9), wherein the lower end face of the front insertion column (1) is hinged with the outer surface of the connecting bridge frame (2) through the ratchet mechanism (9), the connecting bridge frame (2) is of a hollow cylindrical cavity structure with a rectangular axial section, the torsion bar (7) is embedded in the connecting bridge frame (2) and is distributed in parallel with the axis of the connecting bridge frame (2), two ends of the torsion bar (7) are hinged with the upper end faces of the front insertion arms (5) through the ratchet mechanism (9), the ratchet mechanism (9) is connected with the left end face and the right end face of the connecting bridge frame (2) respectively, the two front insertion arms (5) are distributed in parallel with each other and are distributed perpendicular to the axis of the connecting bridge frame (2), the lower end face of the front inserting arm (5) is embedded in the guide sleeve (6) and is connected with the hydraulic shock absorber (4) through the guide sleeve (6), the lower end face of the hydraulic shock absorber (4) is additionally connected with one guide sleeve (6), axes among the hydraulic shock absorber (4), the front inserting arm (5) and the guide sleeve (6) are distributed in parallel, a flow guide opening (41) is additionally arranged on the upper end face of the hydraulic shock absorber (4), the flow guide opening (41) is communicated with the pressure regulating cavity (3) through a flow guide pipe (42), the pressure regulating cavity (3) is a closed cavity structure with the axis parallel to the axis of the connecting bridge frame (2) and is connected with the side surface of the connecting bridge frame (2), the left side face and the right side face of the pressure regulating cavity (3) are respectively provided with a pressure regulating opening (31), and the pressure regulating openings (31) are respectively communicated with the flow guide opening (41) of the hydraulic shock absorber (4) through the flow guide pipe (42), an oil filling port (32) is additionally arranged at the midpoint position of the pressure regulating cavity (3), and pressure regulating valves (8) are respectively arranged at the left and right pressure regulating ports (31) and the midpoint position oil filling port (32).
2. The electric vehicle front fork mechanism with a built-in shock absorbing mechanism according to claim 1, wherein: pressure regulating chamber (3) including hydro-cylinder (33), pressure regulating piston (34), belleville spring (35), pressure sensor (36) and binding post (37), hydro-cylinder (33) are the closed cavity structure of rectangle for axial cross-section, hydro-cylinder (33) both ends face all establishes one with hydro-cylinder (33) coaxial distribution's pressure regulating mouth (31), and oil cylinder (33) mid point position establishes oiling mouth (32) axis and hydro-cylinder (33) axis vertical distribution and intersects, pressure regulating piston (34) are totally two, inlay in hydro-cylinder (33) and symmetric distribution in oiling mouth (32) axis both sides, pressure regulating piston (34) and hydro-cylinder (33) coaxial distribution and with hydro-cylinder (33) lateral wall internal surface sliding connection, interval is not less than 1.5 times of oiling mouth (32) diameter between two pressure regulating piston (34) rear end faces, and each pressure regulating piston (34) rear end face passes through belleville spring (35) and is connected with hydro-cylinder (33) medial surface, and belleville spring (35) and hydro-cylinder (33) coaxial distribution are connected through constant head tank (38) with hydro-cylinder (33) coaxial distribution, pressure regulating piston (34) rear end face all establishes one rather than coaxial distribution's pressure sensor (36) in addition, pressure sensor (36) all with binding post (37) electrical connection, binding post (37) inlay in hydro-cylinder (33) lateral surface to electrical connection between each pressure-regulating valve (8).
3. The electric vehicle front fork mechanism with a built-in shock absorbing mechanism according to claim 2, wherein: the rear end face of the pressure regulating piston (34) is provided with a buffer cavity (39) which is coaxially distributed with the pressure regulating piston, the pressure sensors (36) are embedded in the buffer cavity (39) and are connected with the bottom of the buffer cavity (39), and the pressure sensors (36) of the two pressure regulating pistons (34) are connected with each other through a buffer spring (10) which is coaxially distributed with the pressure regulating piston (34).
4. The electric vehicle front fork mechanism with a built-in shock absorbing mechanism according to claim 2, wherein: the oil cylinder (33) is connected with any position of the outer side face and the inner side face of the connecting bridge frame (2) through a connecting mechanism, oil supplementing ports (11) are additionally arranged on the left end face and the right end face of the oil cylinder (33), the oil supplementing ports (11) are communicated with the oil filling port (32) through a flow guide branch pipe (43), and the flow guide branch pipe (43) is communicated with the oil supplementing port (11) and the oil filling port (32) through a control valve (12).
5. The electric vehicle front fork mechanism with a built-in shock absorbing mechanism according to claim 1, wherein: the guide sleeve (6) comprises an outer sheath (61), a disc spring (35), two guide sliding rails (62), sliding blocks (63), positioning pins (64) and elastic hinges (65), wherein the two guide sliding rails (62) are arranged in grooves of the upper end face and the lower end face of the outer sheath (61), the guide sliding rails (62) and the outer sheath (61) are distributed in parallel and are symmetrically distributed on two sides of the axis of the outer sheath (61), the sliding blocks (63) are embedded in the grooves of the outer sheath (61) and are connected with the guide sliding rails (62) in a sliding manner, a plurality of pin holes (66) distributed along the axis direction of the outer sheath (61) are arranged on the side wall of the outer sheath (61) corresponding to the sliding blocks (63), the sliding blocks (63) are connected with the pin holes (66) through the positioning pins (64), the lower end face of the sliding blocks (63) is abutted against the groove bottom of the outer sheath (61) through the disc spring (35), and the upper end face of the sliding blocks (63) is respectively connected with the hydraulic shock absorber (4) through the elastic hinges (65), The front insertion arms (5) are connected.
6. The electric vehicle front fork mechanism with a built-in shock absorbing mechanism according to claim 5, wherein: insert post (1), preceding arm (5) of inserting and be the columnar structure that axial cross-section is the rectangle, wherein insert arm (5) length before wherein for 1/4-1/2 of hydraulic shock absorber (4) length, simultaneously connect through a damping spring in addition between uide bushing (6) that hydraulic shock absorber (4) both ends position is connected, damping spring axis and hydraulic shock absorber (4) axis parallel distribution, and its both ends are connected with uide bushing (6) surface respectively.
7. The method for damping vibration of an electric vehicle front fork mechanism with a built-in damping mechanism as set forth in claim 1, wherein the method for damping vibration of an electric vehicle front fork mechanism with a built-in damping mechanism comprises the steps of:
s1, pre-assembling equipment, namely assembling the front insertion column (1), the connecting bridge frame (2), the pressure regulating cavity (3), the hydraulic shock absorber (4), the front insertion arm (5), the guide sleeve (6), the torsion bar (7), the pressure regulating valve (8) and the ratchet mechanism (9), adjusting the relative positions of the front insertion arm (5), the hydraulic shock absorber (4) and the guide sleeve (6) according to the structure of a vehicle in the assembling process, simultaneously enabling the front insertion column (1) and the connecting bridge frame (2) to be mutually and vertically connected to obtain a finished front fork, filling hydraulic oil into the pressure regulating cavity (3) and the hydraulic shock absorber (4), and maintaining the pressure after adjusting the hydraulic oil pressure to obtain the finished front fork;
s2, assembling the vehicle, after the step S1 is completed, connecting a finished front fork with the body of the electric vehicle through the front insertion column (1), simultaneously electrically connecting the wiring terminal (37) with a driving circuit of the electric vehicle, finally connecting and assembling the guide sleeve (6) connected with the lower end face of the hydraulic shock absorber (4) and the wheel of the electric vehicle through a connecting mechanism, and then adjusting included angles among the hydraulic shock absorber (4), the front insertion arm (5), the guide sleeve (6) and the horizontal plane through a ratchet mechanism (9) to complete the assembling operation of the vehicle;
s3, damping the vehicle, wherein in the running process of the vehicle, the hydraulic shock absorber (4) elastically absorbs and damps the impact acting force which is applied to the vehicle and distributed in parallel with the axial direction of the hydraulic shock absorber (4), so that the direct impact on the front of the vehicle is damped; the torsion bar (7) is used for elastically absorbing and damping the impact acting force with the included angle of the axis of the hydraulic damper (4) larger than 0 degree, so that the oblique impact vibration generated when the vehicle runs is damped, and the aim of comprehensively damping the impact acting force generated when the vehicle runs is fulfilled; simultaneously in shock attenuation process, in addition through pressure regulating chamber (3) and control valve (12) cooperation, hydraulic oil pressure change detects when receiving the impact to hydraulic shock absorber (4) through pressure sensor (36), thereby it bears the impact effort actual value to obtain the vehicle operation, and bear the impact effort according to the reality, by electric motor car drive circuit drive vehicle pressure regulating system operation, adjust the pressure and the hydraulic pressure oil mass of hydraulic oil between two pressure regulating pistons (34) in hydro-cylinder (33) of hydraulic shock absorber (4) and pressure regulating chamber (3), thereby reach and adjust front fork damping performance according to the vehicle behavior.
8. The method of claim 7, wherein the method further comprises the step of: and S2, when the front fork and the electric vehicle are assembled, the other electric vehicle is provided with a booster pump and a hydraulic tank communicated with the booster pump, wherein the booster pump is respectively communicated with the pressure regulating cavity (3) and the hydraulic shock absorber (4) through a pressure regulating valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210647071.5A CN115009406A (en) | 2022-06-09 | 2022-06-09 | Electric vehicle front fork mechanism with built-in damping mechanism and damping method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210647071.5A CN115009406A (en) | 2022-06-09 | 2022-06-09 | Electric vehicle front fork mechanism with built-in damping mechanism and damping method thereof |
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| CN115009406A true CN115009406A (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210647071.5A Pending CN115009406A (en) | 2022-06-09 | 2022-06-09 | Electric vehicle front fork mechanism with built-in damping mechanism and damping method thereof |
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| CN (1) | CN115009406A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB585122A (en) * | 1945-02-06 | 1947-01-30 | Sydney William Hardy | Improvements in shock absorbing means for motorbicycle and tricycle wheels |
| JP2004270742A (en) * | 2003-03-05 | 2004-09-30 | Showa Corp | Hydraulic damper for vehicle |
| TW201604046A (en) * | 2014-07-05 | 2016-02-01 | 賀氏精密機械 | Suspension system |
| CN211167258U (en) * | 2019-09-26 | 2020-08-04 | 天津维一自行车有限公司 | Pressure regulating and damping device for front fork of bicycle |
| CN214493222U (en) * | 2021-03-02 | 2021-10-26 | 天津华松电动汽车配件制造有限公司 | Pneumatic shock-absorbing front fork of electric bicycle |
-
2022
- 2022-06-09 CN CN202210647071.5A patent/CN115009406A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB585122A (en) * | 1945-02-06 | 1947-01-30 | Sydney William Hardy | Improvements in shock absorbing means for motorbicycle and tricycle wheels |
| JP2004270742A (en) * | 2003-03-05 | 2004-09-30 | Showa Corp | Hydraulic damper for vehicle |
| TW201604046A (en) * | 2014-07-05 | 2016-02-01 | 賀氏精密機械 | Suspension system |
| CN211167258U (en) * | 2019-09-26 | 2020-08-04 | 天津维一自行车有限公司 | Pressure regulating and damping device for front fork of bicycle |
| CN214493222U (en) * | 2021-03-02 | 2021-10-26 | 天津华松电动汽车配件制造有限公司 | Pneumatic shock-absorbing front fork of electric bicycle |
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Application publication date: 20220906 |