Device and method for controlling damping force characteristics of vehicle shock absorber

Abstract

The invention discloses a device for controlling damping force characteristics of a vehicle shock absorber, and relates to the technical field of vehicle shock absorber control, the device comprises a mounting box, and an adjusting assembly is arranged on the outer surface of the mounting box. When the device is used, the electromagnetic sensor is started to detect an electromagnetic signal, when electromagnetism is abnormal, the PLC controls the electric valve to be closed, the two liquid feeding pipes and the two fixed pipes are filled with metal nano liquid pumped through the liquid pump, then the two sets of bent pipes are filled with the metal nano liquid, and finally the protection cavity is slowly filled with the metal nano liquid; when the protection cavity is filled with the metal nano liquid, the PLC controls the liquid pump to be closed, the metal nano particles have good electrical conductivity and magnetic conductivity and can absorb and reflect electromagnetic waves, and therefore the anti-electromagnetic interference effect is achieved, a protection ring is formed through the bent pipe and the protection cavity, anti-interference is conducted on multidirectional electromagnetism, and the anti-electromagnetic interference effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle shock absorber control, and in particular to a device and method for controlling the damping force characteristics of a vehicle shock absorber. Background Art

[0002] Vehicle shock absorbers, also known as shock absorbers, are an important component installed in the vehicle suspension system. They are usually composed of springs and dampers, of which the dampers are mainly responsible for the shock absorption function. When a vehicle is driving on an uneven road, the wheels will constantly bounce up and down. The shock absorbers, through their damping effect, convert the energy generated by this bounce into heat energy and dissipate it, thereby reducing the vibration of the vehicle and improving the ride comfort. Shock absorbers can also reduce the impact on other components of the suspension system, thereby extending their service life. Different road conditions require different damping forces. By controlling the damping force, it can be ensured that the vehicle can effectively absorb the impact when encountering uneven roads.

[0003] In the prior art, during the control process of the damping force characteristics of the vehicle shock absorber, it is necessary to detect the driving status of the vehicle through sensors and transmit this information to the vehicle's control device. The control device adjusts the damping force based on this information. When the control device is working, other electronic equipment in the vehicle will generate an electromagnetic field, which will cause electromagnetic interference to the control device, resulting in signal transmission delays or losses, affecting the control device's rapid response to changes in road conditions, resulting in untimely adjustment of the shock absorber damping force, and reducing vehicle comfort.

[0004] Therefore, we propose a device for controlling the damping force characteristics of a vehicle shock absorber in order to solve the problems raised in the above background technology. Summary of the invention

[0005] The object of the present invention is to provide a device for controlling the damping force characteristics of a vehicle shock absorber, so as to solve the problem proposed in the above-mentioned background technology that when the vehicle shock absorber damping force characteristics control device is working, other electronic equipment on the vehicle will also work to generate an electromagnetic field, causing electromagnetic interference to the control device, resulting in signal transmission delay or loss, affecting the control device's rapid response to changes in road conditions, resulting in untimely adjustment of the shock absorber damping force, and reducing the vehicle comfort.

[0006] To achieve the above object, the present invention provides the following technical solution: a device for controlling the damping force characteristics of a vehicle shock absorber, comprising a mounting box, an adjustment component is arranged on the outer surface of the mounting box, the adjustment component is used to adjust the damping force of the shock absorber, a protection component is arranged on the top of the mounting box, the protection component is used to protect the control device; The protection component includes a protection cover, a protection cavity is opened inside the protection cover, a liquid storage barrel is fixedly installed on the bottom surface of the installation box, a liquid pump is installed on the bottom surface of the installation box near the liquid storage barrel by bolts, the output end of the liquid pump is connected to a delivery pipe through a flange, a plurality of liquid outlet pipes are fixedly connected to the outer surface of the delivery pipe, a plurality of drainage holes are opened on the bottom surface of the protection cavity, a plurality of bent pipes are fixedly connected to the bottom of the protection cover, the plurality of bent pipes are evenly divided into two groups, one end of the two groups of bent pipes are fixedly connected to a fixed pipe, the outer surfaces of the two fixed pipes are fixedly connected to a liquid delivery pipe, the bottom ends of the two liquid delivery pipes are fixedly connected to a drainage pipe, and an electric valve is arranged on the outer surface of the drainage pipe.

[0007] Preferably, an electromagnetic sensor is arranged on the top of the installation box near the top of the protective cover, the input end of the liquid pump is connected to a liquid extraction tube via a flange, one end of the liquid extraction tube is fixedly inserted into the interior of the liquid storage barrel, two positioning slides are fixedly installed on the top of the installation box, a heat conducting plate is movably embedded in the two positioning slides, and a PLC controller is installed on the top of the heat conducting plate via screws.

[0008] Preferably, the outer surface of the PLC controller is located inside the protective cover, the front and rear surfaces of the protective cover are both equipped with protective plates by screws, the bottom ends of the plurality of liquid outlet pipes are fixedly inserted into the interior of the protective cavity, and a mounting block is fixedly installed on the outer surface of the protective cover near the rear surface.

[0009] Preferably, one end of the delivery pipe is fixedly inserted into the top of the installation box, and one end of the delivery pipe is fixedly mounted on the front surface of the installation block. The interiors of the plurality of curved pipes are respectively connected to the interiors of the plurality of drainage holes. An embedded groove is provided on the top of the installation box, and a plurality of curved grooves are provided on both sides of the embedded groove. The outer surfaces of the plurality of curved pipes are respectively fixedly mounted inside the plurality of curved grooves.

[0010] Preferably, the two ends of the two fixed tubes are respectively fixedly mounted on the front surface wall and the rear surface wall inside the embedded groove, the bottom end of the drainage tube is fixedly penetrated into the interior of the installation box, and the bottom end of the drainage tube is fixedly penetrated into the interior of the liquid storage barrel.

[0011] Preferably, the heat conducting plate is mounted on the top of the installation box by bolts, the bottom of the heat conducting plate contacts the outer surfaces of the plurality of curved tubes, a box door is mounted on the front surface of the installation box by bolts, and the bottom of the protective cover is fixedly mounted on the top of the installation box.

[0012] Preferably, the adjusting assembly includes a cylinder, a lower lifting ring is fixedly installed on the bottom of the cylinder, an adjusting tube is fixedly connected to the outer surface of the cylinder near the bottom, a solenoid valve is arranged at one end of the adjusting tube, a flow tube is arranged at the output end of the solenoid valve, a spring disk is arranged on the threaded sleeve on the outer surface of the cylinder, a coil spring is arranged on the movable sleeve on the outer surface of the cylinder, and an upper lifting ring is arranged on the top of the cylinder.

[0013] Preferably, a spring upper seat is fixedly installed on the outer surface of the upper lifting ring, a piston rod is fixedly installed on the bottom of the upper lifting ring, a working piston is fixedly installed on the bottom end of the piston rod, a sealing cover is fixedly installed on the top of the cylinder barrel, a sealing groove is opened on the top of the cylinder barrel, a sealing guide sleeve is fixedly connected to the inside of the sealing groove, and the bottom end of the piston rod movably passes through the sealing cover and the sealing guide sleeve to the inside of the cylinder barrel.

[0014] Preferably, a dust cover is provided on the movable sleeve near the top end of the outer surface of the piston rod, the top of the dust cover is fixedly mounted on the bottom of the upper hanging ring near the edge, the bottom of the dust cover is fixedly mounted on the top of the sealing cover, one end of the coil spring is fixedly mounted on the top of the spring disk, and the other end of the coil spring is fixedly mounted on the bottom of the spring upper seat.

[0015] A method for using a device for controlling the damping force characteristics of a vehicle shock absorber comprises the following steps: S1. When the piston rod moves downward, it drives the working piston to move downward inside the cylinder, pushing the oil into the regulating pipe, and then into the circulation pipe through the solenoid valve; S2. When the vehicle is driving under different road conditions, the sensor will detect the driving status of the vehicle and transmit this information to the PLC controller. The PLC controller sends different control currents to the solenoid valve according to this information to adjust the valve core position, thereby adjusting the size of the oil flow channel and further adjusting the damping size; S3, start the liquid pump, pump the metal nano liquid in the liquid storage barrel into the delivery pipe through the liquid pumping pipe, then deliver the metal nano liquid into the protection cavity through multiple liquid outlet pipes, then flow into the two sets of curved pipes, and flow into the fixed pipe, the liquid delivery pipe and the liquid discharge pipe in sequence along the curved pipes, and finally flow into the liquid storage barrel; S4. Start the electromagnetic sensor to detect the electromagnetic signal and transmit it to the PLC controller for identification and comparison. When the electromagnetic is abnormal, the PLC controller will control the electric valve to close, and the metal nano-liquid pumped by the liquid pump will gradually fill the liquid delivery pipe, the fixed pipe and the curved pipe, and finally slowly fill the protective cavity to form a protective circle to resist multi-directional electromagnetic interference.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is used, the electromagnetic sensor is started to detect the electromagnetic signal, and the electromagnetic signal is transmitted to the PLC controller for identification and comparison. When the electromagnetic is abnormal, the PLC controller will control the electric valve to close, and the metal nano liquid pumped by the liquid pump will first fill the two liquid delivery tubes and the two fixed tubes, then fill the two groups of curved tubes, and finally slowly fill the protective cavity. When the protective cavity is filled with the metal nano liquid, the PLC controller controls the liquid pump to close. The metal nano particles have good electrical conductivity and magnetic permeability, can absorb and reflect electromagnetic waves, and thus play a role in resisting electromagnetic interference. Through the curved tube and the protective cavity, the metal nano liquid is wrapped around the outside of the PLC controller to form a protective ring, which resists electromagnetic interference from all directions, improves the anti-electromagnetic interference effect, reduces the interference of external electromagnetics on the PLC controller, and improves the response speed of the PLC controller.

[0017] 2. When the present invention is used, both sides of the heat conduction plate are inserted into the two positioning slide bars, and then the heat conduction plate is pushed into the interior of the protective cover. When the heat conduction plate cannot move further, it is fixed with bolts. At this time, the PLC controller is just located in the center position inside the protective cover, and the bottom of the heat conduction plate is in contact with the outer surfaces of the two groups of curved tubes, which is conducive to the subsequent full transfer of heat to the liquid in the curved tubes. Then the protective plate is installed, and the protective cover cooperates with the two protective plates to protect the PLC controller and prevent dust from falling on the PLC controller and affecting its operation.

[0018] 3. When the present invention is used, the liquid pump is started, and the metal nano liquid in the liquid storage barrel is pumped into the delivery pipe through the liquid extraction pipe, and then the metal nano liquid is delivered to the protective cavity through multiple liquid outlet pipes, and then flows into two groups of curved pipes, and flows into the fixed pipe, the liquid delivery pipe and the liquid discharge pipe in sequence along the curved pipes, and finally flows into the liquid storage barrel. The heat conduction plate transfers the heat of the PLC controller to the metal nano liquid for heat exchange. The circulating metal nano liquid can not only reduce the temperature of the PLC controller, but also increase the temperature of the metal nano liquid, which is conducive to a more uniform distribution of metal nano particles in the liquid and enhances the anti-electromagnetic interference effect.

[0019] 4. When the present invention is used, when the piston rod moves downward, it drives the working piston to move downward inside the cylinder, pushing the oil into the regulating tube, and then into the circulation tube through the solenoid valve. When the vehicle is driving under different road conditions, the sensor will detect the driving status of the vehicle and transmit this information to the PLC controller. The PLC controller sends different control currents to the solenoid valve based on this information, adjusts the valve core position, thereby adjusting the size of the oil circulation channel, and then adjusts the damping size to adapt to different driving conditions and driving requirements, thereby completing the shock absorber damping force adjustment control. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A front perspective view of a device for controlling damping force characteristics of a vehicle shock absorber according to the present invention; Figure 2 It is a structural unfolded stereogram of a protection component in a device for controlling damping force characteristics of a vehicle shock absorber according to the present invention; Figure 3 It is a schematic diagram of the structure of a mounting box in a device for controlling the damping force characteristics of a vehicle shock absorber according to the present invention; Figure 4 It is a schematic diagram of the structure of a protective cover in a device for controlling the damping force characteristics of a vehicle shock absorber according to the present invention; Figure 5 It is a schematic diagram of the structure of a liquid extraction pipe in a device for controlling the damping force characteristics of a vehicle shock absorber according to the present invention; Figure 6 It is a schematic diagram of the structure of an embedded groove in a device for controlling the damping force characteristics of a vehicle shock absorber according to the present invention; Figure 7 It is a schematic diagram of the structure of a bending tube in a device for controlling the damping force characteristics of a vehicle shock absorber according to the present invention; Figure 8 It is a schematic diagram of the structure of the adjustment component in the device for controlling the damping force characteristics of the vehicle shock absorber of the present invention; Fig. 9 The present invention is a schematic diagram of the structure of a dust cover in a device for controlling the damping force characteristics of a vehicle shock absorber.

[0021] In the figure: 1. Installation box; 2. Box door; 3. Protection assembly; 301. Protection cover; 302. Protection plate; 303. Electromagnetic sensor; 304. Installation block; 305. Liquid pump; 306. Liquid extraction pipe; 307. Delivery pipe; 308. Liquid storage bucket; 309. Liquid outlet pipe; 310. Heat conduction plate; 311. PLC controller; 312. Positioning slide; 313. Bending pipe; 314. Fixed pipe; 315. Protection chamber; 316. Liquid discharge pipe; 317. Liquid delivery pipe; 3 18. Drain hole; 319. Electric valve; 4. Adjustment assembly; 401. Cylinder; 402. Lower lifting ring; 403. Adjustment tube; 404. Solenoid valve; 405. Flow tube; 406. Spring disk; 407. Upper lifting ring; 408. Spring upper seat; 409. Coil spring; 410. Dust cover; 411. Piston rod; 412. Working piston; 413. Sealing groove; 414. Sealing cover; 415. Sealing guide sleeve; 5. Embedded groove; 6. Bending groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figure 1-Figure 9As shown, the present invention provides a technical solution: a device for controlling the damping force characteristics of a vehicle shock absorber, comprising an installation box 1, an adjustment component 4 is arranged on the outer surface of the installation box 1, the adjustment component 4 is used to adjust the damping force of the shock absorber, a protection component 3 is arranged on the top of the installation box 1, and the protection component 3 is used to protect the control device; the protection component 3 comprises a protection cover 301, a protection cavity 315 is opened inside the protection cover 301, a liquid storage barrel 308 is fixedly installed on the bottom surface of the interior of the installation box 1, a liquid pump 305 is installed by bolts near the liquid storage barrel 308 on the bottom surface of the interior of the installation box 1, the output end of the liquid pump 305 is connected to a delivery pipe 307 through a flange, and a plurality of liquid outlet pipes 309 are fixedly connected to the outer surface of the delivery pipe 307, and the protection cover 301 is provided with a plurality of liquid outlet pipes 309. A plurality of drainage holes 318 are provided on the bottom surface of the protective cavity 315, a plurality of bent tubes 313 are fixedly connected to the bottom of the protective cover 301, and the plurality of bent tubes 313 are evenly divided into two groups, one end of each of the two groups of bent tubes 313 is fixedly connected to a fixed tube 314, the outer surfaces of the two fixed tubes 314 are fixedly connected to a liquid delivery tube 317, the bottom ends of the two liquid delivery tubes 317 are fixedly connected to a drainage tube 316, an electric valve 319 is provided on the outer surface of the drainage tube 316, an electromagnetic sensor 303 is provided at the top of the installation box 1 near the top of the protective cover 301, an input end of the liquid pump 305 is connected to a liquid extraction tube 306 through a flange, one end of the liquid extraction tube 306 is fixedly passed through the interior of the liquid storage barrel 308, and the top of the installation box 1 is fixedly installed Two positioning slide bars 312 are installed, and a heat conducting plate 310 is movably embedded inside the two positioning slide bars 312. A PLC controller 311 is installed on the top of the heat conducting plate 310 by screws. The outer surface of the PLC controller 311 is located inside the protective cover 301. The front and rear surfaces of the protective cover 301 are both installed with protective plates 302 by screws. The bottom ends of multiple liquid outlet pipes 309 are fixedly penetrated into the interior of the protective cavity 315. A mounting block 304 is fixedly installed on the outer surface of the protective cover 301 near the rear surface. One end of the delivery pipe 307 is fixedly penetrated to the top of the installation box 1, and one end of the delivery pipe 307 is fixedly installed on the front surface of the mounting block 304. The interiors of the multiple curved pipes 313 are respectively connected to the multiple drainage holes 315. 8 are interconnected, an embedded groove 5 is provided on the top of the installation box 1, and a plurality of curved grooves 6 are provided on both sides of the embedded groove 5. The outer surfaces of the plurality of curved tubes 313 are respectively fixedly installed inside the plurality of curved grooves 6, and the two ends of the two fixed tubes 314 are respectively fixedly installed on the front surface wall and the rear surface wall inside the embedded groove 5. The bottom end of the drain pipe 316 is fixedly penetrated into the interior of the installation box 1, and the bottom end of the drain pipe 316 is fixedly penetrated into the interior of the liquid storage barrel 308. The heat conducting plate 310 is installed on the top of the installation box 1 by bolts, and the bottom of the heat conducting plate 310 contacts the outer surfaces of the plurality of curved tubes 313. The front surface of the installation box 1 is installed with a box door 2 by bolts, and the bottom of the protective cover 301 is fixedly installed on the top of the installation box 1.

[0024] In this embodiment, when in use, the electromagnetic sensor 303, the liquid pump 305, the electromagnetic valve 404 and the PLC controller 311 are electrically connected, a plurality of curved tubes 313 are provided, and a plurality of curved tubes 313 arranged vertically form a group, with a total of two groups. The two sides of the heat conducting plate 310 are inserted into the two positioning slide bars 312, and then the heat conducting plate 310 is pushed so that the PLC controller 311 enters the interior of the protective cover 301. When the front surface of the heat conducting plate 310 contacts the front surface wall inside the two positioning slide bars 312, the heat conducting plate 310 cannot be pushed further. At this time, the PLC controller 311 is just located in the center position inside the protective cover 301, and the bottom of the heat conducting plate 310 contacts the outer surface of the two groups of curved tubes 313. Under the positioning effect, it is convenient to install the PLC controller 311 in the center position. The bottom of the heat conducting plate 310 is in contact with both sets of curved tubes 313, which is conducive to the subsequent sufficient transfer of heat to the liquid in the curved tubes 313. Then, the heat conducting plate 310 is fixed to the top of the installation box 1 by bolts to fix the PLC controller 311. Then, the two protective plates 302 are installed on the front and rear surfaces of the protective cover 301. The protective cover 301 cooperates with the two protective plates 302 to protect the PLC controller 311 and prevent dust from falling on the PLC controller 311 and affecting its operation. The electric valve 319 is in an open state, and the liquid storage barrel 308 is filled with sufficient metal nano liquid. The liquid pump 305 is started, and the liquid extraction pipe 306 is used to extract the liquid. The metal nano liquid in the liquid storage barrel 308 is pumped into the delivery pipe 307, and then the metal nano liquid is delivered to the protection chamber 315 through a plurality of liquid outlet pipes 309, so that the metal nano liquid flows along the arc-shaped inner wall of the protection chamber 315 to the drainage holes 318 on both sides, and then flows into the two sets of curved pipes 313, and flows along the curved pipes 313, enters the two fixed pipes 314, and then enters the delivery pipe 317 and the drainage pipe 316 in sequence, and finally flows into the liquid storage barrel 308. When the metal nano liquid flows in the curved pipes 313, the heat generated by the PLC controller 311 when working is transferred to the heat conducting plate 310, and then the heat conducting plate 310 transfers the heat to the metal nano liquid in the curved pipes 313, and heat exchange is performed, and the circulation The flowing metal nano liquid can not only reduce the temperature of the PLC controller 311, facilitating the normal operation of the PLC controller 311, but also increase the temperature of the metal nano liquid, intensifying its molecular motion, which is conducive to a more uniform distribution of metal nano particles in the liquid, thereby enhancing the anti-electromagnetic interference effect. The electromagnetic sensor 303 is started, and the external electromagnetic signal is detected by the electromagnetic sensor 303, and the detected electromagnetic signal is transmitted to the PLC controller 311 in the form of an electrical signal. The maximum and minimum working thresholds of the electromagnetic data are set in advance inside the PLC controller 311. The PLC controller 311 will identify and compare the received electromagnetic data. When it is detected that the external electromagnetic data exceeds the set maximum working threshold,The PLC controller 311 controls the electric valve 319 to close, so that the metal nano liquid cannot continue to flow downward. The metal nano liquid pumped by the liquid pump 305 first fills up the two liquid delivery pipes 317 and the two fixed pipes 314, then fills up the two sets of curved pipes 313, and finally slowly fills up the protective cavity 315. When the protective cavity 315 is filled with the metal nano liquid, the PLC controller 311 controls the liquid pump 305 to close. The metal nano particles have good electrical conductivity and magnetic permeability, and can absorb and reflect electromagnetic waves, thereby playing a role in resisting electromagnetic interference. Through the curved pipe 313 and the protective cavity 315, The metal nano liquid is wrapped around the outside of the PLC controller 311 to form a protective ring, which can resist electromagnetic interference from multiple directions, improve the anti-electromagnetic interference effect, reduce the interference of external electromagnetics on the PLC controller 311, and improve the response speed of the PLC controller 311. This solves the problem that when the vehicle shock absorber damping force characteristic control device is working, other electronic devices on the vehicle will also work and generate electromagnetic fields, causing electromagnetic interference to the control device, resulting in signal transmission delay or loss, affecting the control device's rapid response to changes in road conditions, resulting in untimely adjustment of the shock absorber damping force, and reducing the vehicle's comfort.

[0025] Embodiment 2: Figure 1-Figure 5 and Figure 8-Figure 9As shown, an adjustment component 4 is arranged on the outer surface of the installation box 1, and the adjustment component 4 is used to adjust the damping force of the shock absorber. A protection component 3 is arranged on the top of the installation box 1, and the protection component 3 is used to protect the control device. An electromagnetic sensor 303 is arranged on the top of the installation box 1 near the top of the protective cover 301. The input end of the liquid pump 305 is connected to a liquid extraction pipe 306 through a flange, and one end of the liquid extraction pipe 306 is fixedly penetrated into the interior of the liquid storage barrel 308. Two positioning slide bars 312 are fixedly installed on the top of the installation box 1. The two The positioning slide 312 is internally embedded with a heat conducting plate 310, and a PLC controller 311 is installed on the top of the heat conducting plate 310 by screws. The adjustment component 4 includes a cylinder 401, and a lower lifting ring 402 is fixedly installed at the bottom of the cylinder 401. An adjustment pipe 403 is fixedly connected to the outer surface of the cylinder 401 near the bottom. A solenoid valve 404 is arranged at one end of the adjustment pipe 403, and a flow pipe 405 is arranged at the output end of the solenoid valve 404. A spring disk 406 is arranged on the outer surface of the cylinder 401. The outer surface movable sleeve of the cylinder 401 is provided with a coil spring 409, the top of the cylinder 401 is provided with an upper ring 407, the outer surface of the upper ring 407 is fixedly installed with a spring upper seat 408, the bottom of the upper ring 407 is fixedly installed with a piston rod 411, the bottom end of the piston rod 411 is fixedly installed with a working piston 412, the top of the cylinder 401 is fixedly installed with a sealing cover 414, the top of the cylinder 401 is provided with a sealing groove 413, the inside of the sealing groove 413 is fixedly connected with a sealing guide sleeve 415, the piston rod 4 The bottom end of 11 movably passes through the sealing baffle 414 and the sealing guide sleeve 415 to the inside of the cylinder 401, and a dust cover 410 is provided on the outer surface of the piston rod 411 near the top end. The top of the dust cover 410 is fixedly mounted on the bottom of the upper hanging ring 407 near the edge, and the bottom of the dust cover 410 is fixedly mounted on the top of the sealing baffle 414. One end of the coil spring 409 is fixedly mounted on the top of the spring disk 406, and the other end of the coil spring 409 is fixedly mounted on the bottom of the spring upper seat 408.

[0026] In this embodiment, when in use, the electric valve 319 and the PLC controller 311 are electrically connected, the input end of the solenoid valve 404 is connected to one end of the regulating tube 403 by a fastening nut, and the output end of the solenoid valve 404 is connected to one end of the circulation tube 405 by a fastening nut. The cylinder 401 is filled with oil. When the piston rod 411 moves downward, it drives the working piston 412 to move downward inside the cylinder 401, pushing the oil into the regulating tube 403, and then into the circulation tube 405 through the solenoid valve 404. When the vehicle is driving under different road conditions, The sensor will detect the driving state of the vehicle and transmit this information to the PLC controller 311. The PLC controller 311 sends different control currents to the solenoid valve 404 based on this information. The valve core inside the solenoid valve 404 will move to different positions under the action of the electromagnetic force, thereby adjusting the size of the oil flow channel. The flow resistance of the oil determines the size of the damping force. When the oil flow channel becomes smaller, the oil flow resistance will increase, and the damping force will become larger; conversely, if the oil flow channel becomes larger, the oil flow resistance will decrease, and the damping force will become smaller. By controlling the current size of the solenoid valve 404, the position of the valve core can be accurately controlled, and then the damping size can be adjusted to adapt to different driving conditions and driving requirements, thereby completing the damping force adjustment control of the shock absorber.

[0027] The method of use and working principle of the present invention are as follows: insert the two sides of the heat conducting plate 310 into the two positioning slide bars 312, and then push the heat conducting plate 310 so that the PLC controller 311 enters the interior of the protective cover 301. When the front surface of the heat conducting plate 310 contacts the front surface wall inside the two positioning slide bars 312, the heat conducting plate 310 cannot be pushed further. At this time, the PLC controller 311 is just located in the center position inside the protective cover 301, and the bottom of the heat conducting plate 310 contacts the outer surfaces of the two groups of curved tubes 313. Under the positioning effect of the positioning slide bars 312, it is convenient to install the PLC controller 311 in the center position, and the bottom of the heat conducting plate 310 contacts the two groups of curved tubes 313, which is conducive to the subsequent full transfer of heat to the curved tubes 313. The heat conducting plate 310 is then fixed to the top of the installation box 1 by bolts, and the PLC controller 311 is fixed. Then, the two protective plates 302 are installed on the front surface and the rear surface of the protective cover 301. The protective cover 301 cooperates with the two protective plates 302 to protect the PLC controller 311 and prevent dust from falling on the PLC controller 311 and affecting its operation. The liquid pump 305 is started, and the metal nano liquid in the liquid storage barrel 308 is pumped into the delivery pipe 307 through the liquid pumping pipe 306, and then the metal nano liquid is delivered to the protection cavity 315 through the multiple liquid outlet pipes 309, so that the metal nano liquid flows along the arc-shaped inner wall of the protection cavity 315 to the drainage holes 318 on both sides, and then flows into the two sets of curved pipes 3 13, and flows along the curved tube 313, enters the two fixed tubes 314, then enters the liquid delivery tube 317 and the liquid discharge tube 316 in sequence, and finally flows into the liquid storage barrel 308. When the metal nano liquid flows in the curved tube 313, the heat generated by the PLC controller 311 when working is transferred to the heat conducting plate 310, and then the heat conducting plate 310 transfers the heat to the metal nano liquid in the curved tube 313 for heat exchange. The circulating metal nano liquid can not only reduce the temperature of the PLC controller 311, which is convenient for the normal operation of the PLC controller 311, but also increase the temperature of the metal nano liquid to enhance the anti-electromagnetic interference effect, and start the electromagnetic sensor 303, and detect the external electromagnetic signal through the electromagnetic sensor 303. The detected electromagnetic signal is transmitted to the PLC controller 311 in the form of an electrical signal for identification and comparison. When it is detected that the external electromagnetic data exceeds the set maximum working threshold, the PLC controller 311 will control the electric valve 319 to close. The metal nano-liquid pumped by the liquid pump 305 first fills the two liquid delivery tubes 317 and the two fixed tubes 314, then fills the two sets of curved tubes 313, and finally slowly fills the protective cavity 315. When the protective cavity 315 is filled with metal nano-liquid, the PLC controller 311 controls the liquid pump 305 to close. The metal nano-particles have good electrical conductivity and magnetic permeability, and can absorb and reflect electromagnetic waves, thereby playing a role in resisting electromagnetic interference. Through the curved tube 313 and the protective cavity 315,The metal nano liquid is wrapped around the outside of the PLC controller 311 to form a protective ring, which can resist electromagnetic interference from multiple directions, improve the anti-electromagnetic interference effect, and improve the response speed of the PLC controller 311. The cylinder 401 is filled with oil. When the piston rod 411 moves downward, it drives the working piston 412 to move downward inside the cylinder 401, pushing the oil into the regulating tube 403, and then enters the circulation tube 405 through the solenoid valve 404. When the vehicle is traveling under different road conditions, the sensor will detect the driving state of the vehicle and transmit this information to the PLC controller 311. The PLC controller 311 sends different control currents to the solenoid valve 404 based on this information. The valve core inside the solenoid valve 404 will move to different positions under the action of the electromagnetic force, thereby adjusting the size of the oil circulation channel. The flow resistance of the oil determines the size of the damping force. When the oil circulation channel becomes smaller, the oil flow resistance will increase, and the damping force will become larger; conversely, if the oil circulation channel becomes larger, the oil flow resistance will decrease, and the damping force will decrease. By controlling the current of the solenoid valve 404, the position of the valve core can be accurately controlled, and the damping force can be adjusted to suit different driving conditions and driving requirements, thereby completing the adjustment and control of the damping force of the shock absorber.

[0028] Among them, the electromagnetic sensor 303, the liquid pump 305, the electric valve 319, the electromagnetic valve 404 and the PLC controller 311 are all existing technologies, and their components and operating principles are all public technologies, which will not be explained in detail here.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for controlling the damping force characteristics of a vehicle shock absorber, comprising a mounting box (1), an adjusting component (4) being arranged on the outer surface of the mounting box (1), the adjusting component (4) being used to adjust the damping force of the shock absorber, characterized in that: A protection component (3) is arranged on the top of the installation box (1), and the protection component (3) is used to protect the control device; The protection assembly (3) comprises a protection cover (301), a protection cavity (315) is provided inside the protection cover (301), a liquid storage barrel (308) is fixedly installed on the bottom surface of the installation box (1), a liquid pump (305) is installed on the bottom surface of the installation box (1) near the liquid storage barrel (308) via bolts, the output end of the liquid pump (305) is connected to a delivery pipe (307) via a flange, a plurality of liquid outlet pipes (309) are fixedly connected to the outer surface of the delivery pipe (307), and the protection cavity (315) is provided with a liquid storage barrel (308). A plurality of drainage holes (318) are provided on the bottom surface of the protective cover (301); a plurality of curved tubes (313) are fixedly connected to the bottom of the protective cover (301); the plurality of curved tubes (313) are evenly divided into two groups; one end of each of the two groups of curved tubes (313) is fixedly connected to a fixed tube (314); the outer surfaces of the two fixed tubes (314) are fixedly connected to a liquid delivery tube (317); the bottom ends of the two liquid delivery tubes (317) are fixedly connected to a drainage tube (316); and an electric valve (319) is provided on the outer surface of the drainage tube (316).

2. The device for controlling the damping force characteristics of a vehicle shock absorber according to claim 1, characterized in that: An electromagnetic sensor (303) is arranged at the top of the installation box (1) near the top of the protective cover (301); the input end of the liquid pump (305) is connected to a liquid extraction pipe (306) via a flange; one end of the liquid extraction pipe (306) is fixedly inserted into the interior of the liquid storage barrel (308); two positioning slide bars (312) are fixedly installed on the top of the installation box (1); a heat conduction plate (310) is movably embedded in the interior of the two positioning slide bars (312); and a PLC controller (311) is installed on the top of the heat conduction plate (310) via screws.

3. The device for controlling the damping force characteristics of a vehicle shock absorber according to claim 2, characterized in that: The outer surface of the PLC controller (311) is located inside the protective cover (301), and protective plates (302) are installed on the front and rear surfaces of the protective cover (301) by means of screws. The bottom ends of the plurality of liquid outlet pipes (309) are fixedly connected to the inside of the protective cavity (315), and a mounting block (304) is fixedly installed on the outer surface of the protective cover (301) near the rear surface.

4. The device for controlling the damping force characteristics of a vehicle shock absorber according to claim 3, characterized in that: One end of the delivery pipe (307) is fixedly inserted into the top of the installation box (1); one end of the delivery pipe (307) is fixedly mounted on the front surface of the installation block (304); the interiors of the plurality of curved pipes (313) are respectively connected to the interiors of the plurality of drainage holes (318); an embedded groove (5) is provided on the top of the installation box (1); a plurality of curved grooves (6) are provided on both sides of the embedded groove (5); and the outer surfaces of the plurality of curved pipes (313) are respectively fixedly mounted inside the plurality of curved grooves (6).

5. The device for controlling the damping force characteristics of a vehicle shock absorber according to claim 4, characterized in that: The two ends of the two fixed tubes (314) are respectively fixedly mounted on the front surface wall and the rear surface wall inside the embedded groove (5), and the bottom end of the drainage tube (316) is fixedly penetrated into the interior of the installation box (1), and the bottom end of the drainage tube (316) is fixedly penetrated into the interior of the liquid storage barrel (308).

6. The device for controlling the damping force characteristics of a vehicle shock absorber according to claim 5, characterized in that: The heat conducting plate (310) is mounted on the top of the installation box (1) by means of bolts, the bottom of the heat conducting plate (310) is in contact with the outer surfaces of the plurality of curved tubes (313), a box door (2) is mounted on the front surface of the installation box (1) by means of bolts, and the bottom of the protective cover (301) is fixedly mounted on the top of the installation box (1).

7. The device for controlling the damping force characteristics of a vehicle shock absorber according to claim 6, characterized in that: The regulating assembly (4) comprises a cylinder (401), a lower lifting ring (402) is fixedly mounted on the bottom of the cylinder (401), an regulating tube (403) is fixedly connected to the outer surface of the cylinder (401) near the bottom, a solenoid valve (404) is arranged at one end of the regulating tube (403), a flow tube (405) is arranged at the output end of the solenoid valve (404), a spring disk (406) is arranged on the threaded sleeve on the outer surface of the cylinder (401), a coil spring (409) is arranged on the movable sleeve on the outer surface of the cylinder (401), and an upper lifting ring (407) is arranged on the top of the cylinder (401).

8. The device for controlling the damping force characteristics of a vehicle shock absorber according to claim 7, characterized in that: A spring upper seat (408) is fixedly installed on the outer surface of the upper lifting ring (407), a piston rod (411) is fixedly installed on the bottom of the upper lifting ring (407), a working piston (412) is fixedly installed on the bottom end of the piston rod (411), a sealing cover (414) is fixedly installed on the top of the cylinder barrel (401), a sealing groove (413) is opened on the top of the cylinder barrel (401), a sealing guide sleeve (415) is fixedly connected to the inside of the sealing groove (413), and the bottom end of the piston rod (411) movably passes through the sealing cover (414) and the sealing guide sleeve (415) to the inside of the cylinder barrel (401).

9. The device for controlling the damping force characteristics of a vehicle shock absorber according to claim 8, characterized in that: The outer surface of the piston rod (411) is provided with a dust cover (410) near the top end, the top of the dust cover (410) is fixedly mounted on the bottom of the upper lifting ring (407) near the edge, the bottom of the dust cover (410) is fixedly mounted on the top of the sealing cover (414), one end of the coil spring (409) is fixedly mounted on the top of the spring disk (406), and the other end of the coil spring (409) is fixedly mounted on the bottom of the spring upper seat (408).

10. A method for using a device for controlling the damping force characteristics of a vehicle shock absorber, characterized in that: The device for controlling the damping force characteristics of a vehicle shock absorber according to claim 9 comprises the following steps: S1. When the piston rod (411) moves downward, it drives the working piston (412) to move downward inside the cylinder (401), pushing the oil into the regulating pipe (403), and then into the circulation pipe (405) through the solenoid valve (404); S2. When the vehicle is traveling under different road conditions, the sensor detects the driving state of the vehicle and transmits the information to the PLC controller (311). The PLC controller (311) sends different control currents to the solenoid valve (404) according to the information to adjust the position of the valve core, thereby adjusting the size of the oil flow channel and further adjusting the damping size; S3, starting the liquid pump (305), pumping the metal nano-liquid in the liquid storage barrel (308) into the delivery pipe (307) through the liquid pumping pipe (306), then delivering the metal nano-liquid into the protection cavity (315) through the plurality of liquid outlet pipes (309), then flowing into the two sets of curved pipes (313), and then flowing along the curved pipes (313) into the fixed pipe (314), the liquid delivery pipe (317) and the liquid discharge pipe (316) in sequence, and finally flowing into the liquid storage barrel (308); S4, start the electromagnetic sensor (303), detect the electromagnetic signal, and transmit the electromagnetic signal to the PLC controller (311) for identification and comparison. When the electromagnetic is abnormal, the PLC controller (311) will control the electric valve (319) to close, and the metal nano liquid pumped by the liquid pump (305) gradually fills the liquid delivery pipe (317), the fixed pipe (314) and the bending pipe (313), and finally slowly fills the protection cavity (315), forming a protection circle to resist electromagnetic interference from all directions.

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