Usage method of the bracket anti-vibration system of the AC / DC emergency power repair vehicle

Abstract

Vibration damping method of the anti-vibration system of the AC / DC emergency power repair vehicle, and the steps used are as follows: Step 1, installation and positioning; Step 2, fill the vibration damping airbag with gas to make it reach the working air pressure P1; Step 3, detect the state of the DC system cabinet. If it is in the normal driving state, maintain the working air pressure P1 or provide a vibration damping force in the direction opposite to the acceleration direction; Step 4, when the DC system cabinet is in an emergency state, calculate the inertia force of the cabinet, and provide an instantaneous buffer air pressure corresponding to the inertia force for the vibration damping airbag through the accumulator to form a buffer force. By providing a relatively small vibration damping air pressure to the vibration damping airbag during the normal driving of the repair vehicle, damping is formed for the vibration of the cabinet to reduce the vibration. In case of emergencies such as collision and out of control, due to the detected acceleration, a transient and opposite-direction buffer force is provided to the vibration damping airbag in the opposite direction to reduce the acceleration of the cabinet and ensure the safety of the DC system.

Description

Technical Field

[0001] The present invention relates to the technical field of emergency power repair vehicles, and specifically relates to a vibration damping method for a vibration isolation system of an AC-DC emergency power repair vehicle. Background Art

[0002] The AC-DC emergency power repair vehicle is equipped with an AC generator and a DC power system inside the vehicle. Its built-in DC system can provide an emergency DC repair power supply when the DC system of the substation collapses, and provide voltage for the DC loads of the substation. Different from ordinary emergency power repair vehicles that can only use diesel generators to provide alternating current, a complete set of DC systems are installed in the vehicle, including a charging panel, a battery panel, and a power distribution panel.

[0003] Since the AC-DC emergency power repair vehicle has a DC system inside the vehicle, which contains flammable and explosive items such as batteries, vibration isolation treatment needs to be carried out on the battery part during the movement of the vehicle to avoid problems such as poor contact of cables caused by vibration of the battery, electrolyte deviation, and loosening of the charging panel and the power distribution panel. Ordinary vibration isolation pads can only buffer to a certain extent and cannot adjust the vibration isolation according to the vibration conditions of the vehicle, resulting in the battery part being unable to avoid its vibration frequency according to the vibration of the carriage. When there is a relatively large acceleration or deceleration in an emergency, it cannot be fully buffered, resulting in an increase in the internal resistance or contact resistance of the battery due to long-term vibration, instantaneous resonance, or instantaneous high G value, thereby reducing the consistency of the battery pack, reducing the service life, and decreasing the charge and discharge performance after long-term use. In severe cases, it may even lead to out-of-control charge and discharge of the battery. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a vibration isolation system for the DC system bracket of an AC-DC emergency power repair vehicle, which can provide vibration damping during normal driving and buffering in emergency situations such as collision and out-of-control for the DC system on the AC-DC emergency power repair vehicle.

[0005] To solve the above technical problem, the technical solution adopted by the present invention is:

[0006] The vibration damping method of the vibration isolation system of the AC-DC emergency power repair vehicle uses the following steps:

[0007] Step 1: Place the DC system cabinet to be vibration-isolated on the vibration isolation support on the support seat and fix or limit it to the vibration isolation support;

[0008] Step 2: Classify the vehicle motion states into normal driving state and emergency state according to the different acceleration values of the emergency repair vehicle detected by the top acceleration sensor and the bottom acceleration sensor. Set the airbag pressure P of the shock-absorbing airbag when the emergency repair vehicle is in the normal driving state according to the weight of the placed DC system cabinet and the equipment placed thereon, and fill the shock-absorbing airbag with gas to make its air pressure reach P1;

[0009] Step 3: During the vehicle driving process, the top acceleration sensor and the bottom acceleration sensor detect the accelerations above and below the DC system cabinet. When the acceleration value is within the threshold set for the normal driving state, the air pressure regulation system keeps the air pressure in the shock-absorbing airbag at P1;

[0010] Step 4: During the vehicle driving process, when the acceleration sensor at the top or the bottom detects that the acceleration value is within the acceleration threshold of the emergency state, the corresponding top or bottom cabinet is in the emergency state. The air pressure regulation system decomposes the detected acceleration direction into the X-axis and Y-axis accelerations corresponding to the rectangular coordinate system. At this time, due to the accelerations in these two directions, the support block acts on the corresponding two guide rods, and the force received by the guide rod is related to the corresponding X-axis or Y-axis acceleration and the overall mass of the DC system cabinet, that is, F = ma. Calculate the magnitude of the force acting on the two current guide rods according to the total weight of the DC system cabinet and the equipment placed thereon and the X-axis and Y-axis accelerations, and its acting direction is towards the shock-absorbing airbag connected to it;

[0011] Step 5: Obtain the instantaneous reaction forces required for the two shock-absorbing airbags according to the set emergency buffering scheme according to the time line. The force of the shock-absorbing airbag F = PS. From the acting area S at the connection between the shock-absorbing airbag and the guide rod, obtain the instantaneous air pressure required for the shock-absorbing airbag, and the air pressure regulation system inflates the shock-absorbing airbag to reach the corresponding instantaneous air pressure according to the time line to achieve the effect of emergency buffering. After the buffering is completed, adjust the shock-absorbing airbag back to the air pressure P1;

[0012] The above anti-vibration system includes an anti-vibration device. The anti-vibration device includes an anti-vibration support. An anti-vibration buffer area / tank is provided inside the anti-vibration support. A central guide block is provided at the center of the anti-vibration buffer area / tank. A buffer decomposition tank is provided inside the central guide block. A support block that is in sliding / rolling contact with the bottom of the buffer decomposition tank is provided at the center of the buffer decomposition tank. The cross-section of the support block is rectangular. Four rectangular faces of the support block are in sliding / rolling contact with the ends of four decomposition guide rods. The decomposition guide rods extend out of the side wall of the central guide block and are fixedly connected to one end of the shock-absorbing airbag. The other end of the shock-absorbing airbag is fixedly connected to the side wall of the anti-vibration support;

[0013] The above shock-absorbing airbag is connected to the air pressure regulation system. The air pressure of the four shock-absorbing airbags corresponding to the movement direction of the support block is regulated through the air pressure regulation system to form buffer vibration reduction;

[0014] The above anti-vibration mounts are installed on the support seats in the up and down directions and are respectively arranged at the four corners to limit or fix the four corners of the upper and lower parts of the DC system support. The upper and lower support seats are respectively fixed to the upper and lower vehicle walls, and buffer pads are provided under the lower anti-vibration mounts and above the upper anti-vibration mounts.

[0015] The support seats arranged separately above and below are respectively provided with a top acceleration sensor and a bottom acceleration sensor.

[0016] The above air pressure regulation system includes a supercharging air pump that provides a reference air pressure. The output end of the supercharging air pump is connected with a first pressure transmission pipeline and a second pressure transmission pipeline. A first pipeline proportional pressure reducing valve and a second pipeline proportional pressure increasing valve are respectively arranged on the first pressure transmission pipeline and the second pressure transmission pipeline. The first pressure transmission pipeline is connected with a damping airbag through an airbag one-way intake valve, and the second pipeline proportional pressure increasing valve is connected with the damping airbag through a pressure maintaining and pressure regulating system and an accumulator one-way exhaust valve.

[0017] The above pressure maintaining and pressure regulating system includes four accumulator one-way intake valves connected to the second pressure transmission pipeline. The accumulator one-way intake valves are connected to the input end of the accumulator. The output end of the accumulator is provided with an accumulator proportional pressure regulating valve, and the output end of the accumulator proportional pressure regulating valve is connected with the accumulator one-way exhaust valve.

[0018] A airbag pressure sensor is arranged on the connection pipeline between the damping airbag and the accumulator one-way exhaust valve or the airbag one-way intake valve.

[0019] A controllable pressure relief valve is arranged on the above damping airbag.

[0020] In the above step two, the specific process of charging the four damping airbags with air pressure reaching P is as follows:

[0021] The supercharging air pump starts to reach the rated pressure of the pump body. After the first pressure transmission pipeline is depressurized by the first pipeline proportional pressure reducing valve, the pipeline pressure is P, and gas is filled into the damping airbag through the airbag one-way intake valve until the pressure value of the airbag pressure sensor reaches P1. At the same time, after the second pressure transmission pipeline is pressurized by the second pipeline proportional pressure increasing valve, it reaches the pressure P2, and P2 >> P1, and energy storage gas is filled into the accumulator through the accumulator one-way intake valve. At this time, the accumulator proportional pressure regulating valve is in the closed state. Then the supercharging air pump is turned off, and the damping airbag maintains the air pressure P. If the air pressure in the subsequent damping airbag drops below the allowable value, the accumulator proportional pressure regulating valve starts to adjust the pressure at its output end to P1, and punches the damping airbag through the accumulator one-way exhaust valve until the internal air pressure returns to P, and then the accumulator proportional pressure regulating valve returns to the closed state.

[0022] In a preferred solution, in the above step three, when the acceleration value is within the threshold set for the normal driving state, the anti-vibration system on the upper and lower support seats provides real-time anti-vibration air pressure to the anti-vibration air bags corresponding to the acceleration value in the sub-directions by the air pressure adjustment system according to the detected acceleration value. The anti-vibration air pressure provides an anti-vibration force opposite to the acceleration sub-direction, and the anti-vibration force is used to reduce the vibration of the load between the four anti-vibration supports.

[0023] The above-mentioned support block is provided with cabinet corner limits, and the cabinet corner limits are used for limiting the four corners of the DC system and damping conduction.

[0024] The above-mentioned cabinet corner limits are right-angle limits or circular ring limits. When it is a right-angle limit, the right-angle limits on the four support blocks are arranged oppositely to enclose the four corners of the DC system cabinet. When it is a circular ring limit, the cylinders at the upper and lower parts of the DC system cabinet are inserted into the circular ring limits.

[0025] When the above-mentioned cabinet corner limit is a right-angle limit, each right-angle limit at the four corners of the support seat can only provide buffering in two directions. When the acceleration in the emergency state is detected in step four, the right-angle sides opposite to the X-axis and Y-axis sub-acceleration directions corresponding to the acceleration on the right-angle limit provide buffering.

[0026] When the above-mentioned cabinet corner limit is a circular ring limit, each circular ring limit at the four corners of the support seat can provide buffering in four directions. When the acceleration in the emergency state is detected in step four, the decomposition guide rods opposite to the X-axis and Y-axis sub-acceleration directions corresponding to the acceleration on each support block provide buffering.

[0027] The damping method of the anti-vibration system of an AC-DC emergency power repair vehicle provided by the present invention forms a damping to reduce the vibration by providing relatively small anti-vibration air pressure to the anti-vibration air bags when the repair vehicle is driving normally. In case of emergencies such as collision and out-of-control, due to the anti-vibration air bags with opposite sub-directions of the detected acceleration providing instantaneous and opposite buffering forces, the acceleration of the cabinet body is reduced to ensure the safety of the DC system. Brief Description of the Drawings

[0028] The present invention will be further described below in conjunction with the drawings and embodiments:

[0029] Figure 1 It is a structural schematic diagram of the anti-vibration support of the present invention;

[0030] Figure 2 is Figure 1 a partial enlarged schematic diagram at position A in

[0031] Figure 3 is when the cabinet corner limit is a circular ring limit Figure 1 a partial enlarged schematic diagram at position A in

[0032] Figure 4 It is a schematic diagram of the principle of the air pressure regulating system;

[0033] Figure 5 It is the layout diagram of the anti-vibration system;

[0034] Figure 6 It is Figure 5 the partial enlarged schematic diagram in

[0035] Figure 7 It is the layout diagram of the anti-vibration system when the circular ring is used for limit in the optimization plan;

[0036] Figure 8 It is Figure 7 the partial enlarged schematic diagram in

[0037] Figure 9 It is the schematic diagram of the buffering effect of the right-angle limit in the embodiment;

[0038] Figure 10 It is the schematic diagram of the buffering effect of the circular ring limit in the embodiment.

[0039] Among them: anti-vibration support 1, anti-vibration buffer zone / slot 2, central guide block 3, buffer decomposition slot 31, support block 4, decomposition guide rod 5, T-shaped extension block 51, extrusion roller 52, shock-absorbing airbag 6, cabinet corner limit 7, booster air pump 8, first pressure transmission pipeline 9, second pressure transmission pipeline 10, first pipeline proportional pressure reducing valve 11, second pipeline proportional pressure increasing valve 12, accumulator one-way intake valve 13, accumulator 14, accumulator proportional pressure regulating valve 15, accumulator one-way exhaust valve 16, airbag pressure sensor 17, airbag one-way intake valve 18, controllable pressure relief valve 19, support seat 20, top acceleration sensor 21, bottom acceleration sensor 22, DC system support 23, buffer pad 24, hoop 25. Specific implementation manners

[0040] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0041] As Figures 1-10 shown in, the vibration reduction method of the anti-vibration system of the AC / DC emergency power repair vehicle uses the following steps:

[0042] Step 1: Place the DC system cabinet to be vibration-proof on the anti-vibration support 1 on the support seat 20, and fix or limit it to the anti-vibration support 1;

[0043] Step 2: Classify the vehicle motion states into normal driving state and emergency state according to the different acceleration values of the emergency repair vehicle detected by the top acceleration sensor 21 and the bottom acceleration sensor 22. Set the airbag pressure P1 of the shock-absorbing airbag 6 when the emergency repair vehicle is in the normal driving state according to the weight of the placed DC system cabinet and the equipment placed thereon, and fill the shock-absorbing airbag 6 with gas to make its air pressure reach P1;

[0044] Step 3: During the vehicle driving process, the top acceleration sensor 21 and the bottom acceleration sensor 22 detect the acceleration above and below the DC system cabinet. If the acceleration value is within the threshold set for the normal driving state, the air pressure regulation system keeps the air pressure in the shock-absorbing airbag 6 at P1;

[0045] Step 4: During the vehicle driving process, when the top acceleration sensor 21 or the bottom acceleration sensor 22 detects that the acceleration value is within the acceleration threshold of the emergency state, the corresponding top or bottom cabinet is in the emergency state. The air pressure regulation system decomposes the detected acceleration direction into the corresponding X-axis and Y-axis accelerations in the rectangular coordinate system. At this time, due to the accelerations in these two directions, the support block 4 acts on the corresponding two guide rods 5, and the force received by the guide rod 5 is related to the corresponding X-axis or Y-axis acceleration and the overall mass of the DC system cabinet, that is, F = ma. Calculate the magnitude of the force acting on the two current guide rods 5 according to the total weight of the DC system cabinet and the equipment placed thereon and the X-axis and Y-axis accelerations, and its acting direction is towards the shock-absorbing airbag 6 connected to it;

[0046] Step 5: Obtain the instantaneous reaction forces required for the two shock-absorbing airbags 6 according to the set emergency buffering scheme along the timeline. The acting force of the shock-absorbing airbag 6 is F = PS. From the acting area S at the connection of the shock-absorbing airbag 6 and the guide rod 5, obtain the instantaneous air pressure required for the shock-absorbing airbag 6, and the air pressure regulation system inflates the shock-absorbing airbag 6 to reach the corresponding instantaneous air pressure along the timeline to achieve the effect of emergency buffering. After the buffering is completed, adjust the shock-absorbing airbag 6 back to the air pressure P1;

[0047] The above anti-vibration system includes an anti-vibration device. The anti-vibration device includes an anti-vibration support 1. An anti-vibration buffer area / tank 2 is provided inside the anti-vibration support 1. A central guide block 3 is provided at the center of the anti-vibration buffer area / tank 2. A buffer decomposition tank 31 is provided inside the central guide block 3. A support block 4 that is in sliding / rolling contact with the bottom of the buffer decomposition tank 31 is provided at the center of the buffer decomposition tank 31. The cross-section of the support block 4 is rectangular. The four rectangular faces of the support block 4 are in sliding / rolling contact with the ends of the four decomposition guide rods 5. The decomposition guide rods 5 extend out of the side wall of the central guide block 3 and are fixedly connected to one end of the shock-absorbing airbag 6. The other end of the shock-absorbing airbag 6 is fixedly connected to the side wall of the anti-vibration support 1;

[0048] The above-mentioned shock-absorbing airbag 6 is connected to the air pressure regulating system, and the air pressure of the four shock-absorbing airbags 6 corresponding to the movement direction of the support block 4 is regulated through the air pressure regulating system to form buffer shock absorption;

[0049] The above-mentioned anti-vibration support 1 is installed on the support seats 20 in the up and down directions and is arranged at the four corners to limit or fix the upper and lower four corners of the DC system support 23. The upper and lower support seats 20 are respectively fixed to the upper and lower walls of the vehicle, and buffer pads 24 are provided under the lower anti-vibration support 1 and above the upper anti-vibration support 1;

[0050] The support seats 20 arranged separately above and below are respectively provided with a top acceleration sensor 21 and a bottom acceleration sensor 22.

[0051] As Figure 5 and 7 shown in, on the AC / DC emergency power repair vehicle, the bottom corners and top corners of each cabinet, including the battery cabinet, charging cabinet, etc., are in contact with the cabinet corner limit 7, and the four rectangular faces of the support block 4 are in sliding / rolling contact with the ends of the four decomposition guide rods 5. The movement directions of the four corners of the cabinet body are decomposed into the linear movements of the four decomposition guide rods 5 distributed at right angles. The four decomposition guide rods 5 move following the movement of the support block 4. The movement direction of the support block 4 is determined by the acceleration direction of the vehicle. The movement of the four decomposition guide rods 5 is buffered by the four shock-absorbing airbags 6 and finally transmitted to the support block 4 to form shock absorption of the cabinet body.

[0052] The above-mentioned air pressure regulating system includes a supercharging air pump 8 that provides a reference air pressure. The output end of the supercharging air pump 8 is connected with a first pressure transmission pipeline 9 and a second pressure transmission pipeline 10. A first pipeline proportional pressure reducing valve 11 and a second pipeline proportional pressure increasing valve 12 are respectively provided on the first pressure transmission pipeline 9 and the second pressure transmission pipeline 10. The first pressure transmission pipeline 9 is connected to the shock-absorbing airbag 6 through an airbag one-way intake valve 18. The second pipeline proportional pressure increasing valve 12 is connected to the shock-absorbing airbag 6 through a pressure maintaining and regulating system and an accumulator one-way outlet valve 16.

[0053] The above-mentioned pressure maintaining and regulating system includes four accumulator one-way intake valves 13 connected to the second pressure transmission pipeline 10. The accumulator one-way intake valves 13 are connected to the input end of the accumulator 14. The output end of the accumulator 14 is provided with an accumulator proportional pressure regulating valve 15. The output end of the accumulator proportional pressure regulating valve 15 is connected to the accumulator one-way outlet valve 16;

[0054] A airbag pressure sensor 17 is provided on the connecting pipeline of the shock-absorbing airbag 6 and the accumulator one-way outlet valve 16 or the airbag one-way intake valve 18.

[0055] The above-mentioned shock-absorbing airbag 6 is provided with a controllable pressure relief valve 19.

[0056] As Figure 4As shown in the figure, the first pipeline proportional pressure reducing valve 11 provides shock-absorbing air pressure in four directions for the four shock-absorbing air bags 6 to cope with the start-stop and bumpy processes of the vehicle during normal driving. At this time, the pressure maintaining and regulating system provides the same air pressure as the output end of the first pipeline proportional pressure reducing valve 11. When the vehicle has an abnormally increased acceleration, such as collision, out of control, etc., it is possible to provide the air pressure after the second pipeline proportional pressure increasing valve 12 to the corresponding shock-absorbing air bag 6 according to the acceleration direction and adjust the air pressure to the appropriate corresponding air pressure to perform a boosting operation on the shock-absorbing air bag 6 in the corresponding direction.

[0057] In addition, through the pressure maintaining effect of the pressure maintaining and regulating system, the boosting air pump 8 does not need to work all the time. When the shock-absorbing air bag 6 reaches the set working air pressure, the one-way valve is used for pressure maintaining. When the air pressure decreases, the pressure maintaining and regulating system outputs an appropriate amount of boost to make the shock-absorbing air bag 6 return to the working air pressure. When the pressure maintaining and regulating system cannot maintain the working air pressure, the boosting air pump 8 is started for a short time to resume to the working air pressure and then stops. Such an operation increases the service life of the boosting air pump 8.

[0058] On the one hand, the air pressure of the boosting air pump 8 forms the working air pressure after passing through the first pipeline proportional pressure reducing valve 11 and enters the four shock-absorbing air bags 6. At this time, the output air pressure of the accumulator proportional pressure regulating valve 15 is equal to the output air pressure of the first pipeline proportional pressure reducing valve 11. On the other hand, the second pipeline proportional pressure increasing valve 12 boosts the air pressure and then enters the accumulator 14, enabling the accumulator to have the ability to maintain the pressure output for the shock-absorbing air bag 6 for a long time, and the high pressure in the accumulator 14 can be used to provide the ability to instantaneously buffer the high pressure for the shock-absorbing air bag 6 in the corresponding direction when the vehicle has a large G value loss such as out of control and collision.

[0059] As Figure 5 and 7 As shown in the figure, the buffer pad 24 is used to provide shock absorption in the up and down directions. Generally, the AC / DC emergency power repair vehicle runs between urban substations and high-speed substations, the road conditions are good, and shock absorption can be achieved through the buffer pad 24 in the up and down directions, while frequent acceleration, deceleration, collision, out of control, etc. are shock-absorbed by the shock-absorbing system.

[0060] When a collision and out-of-control event occur, due to the different acceleration G values at the top and bottom of the DC system cabinet body caused by different collision parts or out-of-control postures, it is necessary to provide different buffer shock-absorbing pressures respectively, and the detection of acceleration is completed by the top acceleration sensor 21 and the bottom acceleration sensor 22.

[0061] In the above step two, the specific process of filling the four shock-absorbing air bags 6 with air pressure reaching P1 is as follows:

[0062] The supercharging air pump 8 starts and reaches the rated pressure of the pump body. After the first pressure transmission pipeline 9 is depressurized by the first pipeline proportional pressure reducing valve 11, the pipeline pressure is P1, and gas is filled into the shock absorption airbag 6 through the airbag one-way intake valve 18 until the pressure value of the airbag pressure sensor 17 reaches P1. At the same time, after the second pressure transmission pipeline 10 is pressurized by the second pipeline proportional pressure increasing valve 12, it reaches the pressure P2, where P2 >> P1, and energy storage gas is filled into the energy accumulator 14 through the energy accumulator one-way intake valve 13. At this time, the energy accumulator proportional pressure regulating valve 15 is in the closed state. Then, the supercharging air pump 8 is turned off, and the shock absorption airbag 6 maintains the air pressure P1. If the air pressure in the subsequent shock absorption airbag 6 drops below the allowable value, the energy accumulator proportional pressure regulating valve 15 is activated to adjust the pressure at its output end to P1, and gas is pressed into the shock absorption airbag 6 through the energy accumulator one-way outlet valve 16 until the internal air pressure returns to P1. Then, the energy accumulator proportional pressure regulating valve 15 returns to the closed state.

[0063] In the preferred solution, in the above step three, when the acceleration value is within the threshold set for the normal driving state, the anti-vibration system on the upper and lower support seats 20 provides real-time anti-vibration air pressure to the shock absorption airbag 6 corresponding to the acceleration value in the direction of the acceleration component by the air pressure regulation system. The anti-vibration air pressure provides an anti-vibration force opposite to the direction of the acceleration component, and the anti-vibration force is used to reduce the vibration of the load between the four anti-vibration supports 1.

[0064] The above support block 4 is provided with a cabinet corner limit 7, and the cabinet corner limit 7 is used for limiting the four corners of the DC system and for vibration damping conduction.

[0065] The above cabinet corner limit 7 is a right-angle limit or a circular ring limit. When it is a right-angle limit, the right-angle limits on the four support blocks 4 are arranged oppositely to enclose the four corners of the DC system cabinet. When it is a circular ring limit, the cylinders at the upper and lower parts of the DC system cabinet are inserted into the circular ring limit.

[0066] As Figure 9 shown, when the above cabinet corner limit 7 is a right-angle limit, each right-angle limit at the four corners of the support seat 20 can only provide buffering in two directions. When the acceleration detected in step four is an emergency state acceleration, the right-angle sides opposite to the X-axis and Y-axis acceleration components corresponding to the acceleration on the right-angle limit provide buffering;

[0067] When the acceleration is Figure 9 in the a direction, the X-axis and Y-axis acceleration component directions are respectively a x and a y directions. Since each right-angle limit has only two right-angle sides and can only provide reverse buffering forces in two directions, then Figure 9 in it, the upper side of A1, the upper side and the right side of A2, and the right side of A4, a total of four sides, should provide reverse buffering forces, that is, the solid sides in the thumbnail of the right-angle limit in the figure, corresponding to the shock absorption airbag 6 in these four directions.

[0068] As Figure 9 shown, when the cabinet corner limit 7 is a circular ring limit, each circular ring limit at the four corners of the bracket seat 20 can provide buffering in four directions. When the acceleration detected in step four is an emergency state acceleration, the decomposition guide rods 5 opposite to the X-axis and Y-axis component acceleration directions corresponding to the acceleration on each support block 4 provide buffering;

[0069] When the acceleration is Figure 10 in the a direction, the X-axis and Y-axis component acceleration directions are respectively a x and a y direction. The circular ring limit can provide buffering force in all four directions. Then Figure 10 in, a total of eight sides of the decomposition guide rods 5 on the upper and right sides of B1–B4 should provide reverse buffering force, corresponding to the shock-absorbing airbags 6 in these eight directions.

Claims

1. A vibration damping method for the anti-vibration system of an AC / DC emergency power repair vehicle, characterized in that, The steps of use are as follows: Step 1: Place the DC system cabinet to be vibration-proof on the vibration-proof support (1) on the support seat (20), and fix or limit it to the vibration-proof support (1); Step 2: Divide the vehicle motion state into normal driving state and emergency state according to the different acceleration values of the emergency repair vehicle detected by the top acceleration sensor (21) and the bottom acceleration sensor (22), and set the airbag pressure P1 of the vibration damping airbag (6) when the emergency repair vehicle is in the normal driving state according to the weight of the placed DC system cabinet and the equipment placed on it, and fill the vibration damping airbag (6) with gas to make its air pressure reach P1; Step 3: During the vehicle driving process, the top acceleration sensor (21) and the bottom acceleration sensor (22) detect the acceleration above and below the DC system cabinet. If the acceleration value is within the threshold set in the normal driving state, the air pressure regulation system keeps the air pressure in the vibration damping airbag (6) at P1; Step 4: During the vehicle driving process, when the acceleration value detected by the top acceleration sensor (21) or the bottom acceleration sensor (22) is within the acceleration threshold in the emergency state, the corresponding top or bottom cabinet is in the emergency state. The air pressure regulation system decomposes the detected acceleration direction into the corresponding X-axis and Y-axis accelerations in the rectangular coordinate system. At this time, due to the accelerations in these two directions, the support block (4) acts on the corresponding two guide rods (5), and the force received by the guide rod (5) is related to the corresponding X-axis or Y-axis acceleration and the overall mass of the DC system cabinet, that is, F = ma. According to the total weight of the DC system cabinet and the equipment placed on it and the X-axis and Y-axis accelerations, the magnitude of the force acting on the two current guide rods (5) is obtained, and its acting direction is towards the vibration damping airbag (6) connected to it; Step 5: Obtain the instantaneous reaction forces required for the two vibration damping airbags (6) according to the set emergency buffer plan along the time line. The force of the vibration damping airbag (6) is F = PS. From the acting area S at the connection between the vibration damping airbag (6) and the guide rod (5), the instantaneous air pressure required for the vibration damping airbag (6) is obtained, and the air pressure regulation system inflates the vibration damping airbag (6) to reach the corresponding instantaneous air pressure along the time line to achieve the effect of emergency buffering. After the buffering is completed, the vibration damping airbag (6) is adjusted back to the air pressure P1; The described vibration-proof system includes a vibration-proof device. The vibration-proof device includes a vibration-proof support (1). There is a vibration-proof buffer area / tank (2) inside the vibration-proof support (1). A central guide block (3) is provided at the center of the vibration-proof buffer area / tank (2). There is a buffer decomposition tank (31) inside the central guide block (3). A support block (4) that makes sliding / rolling contact with the bottom of the buffer decomposition tank (31) is provided at the center of the buffer decomposition tank (31). The cross-section of the support block (4) is rectangular. The four rectangular faces of the support block (4) make sliding / rolling contact with the ends of the four decomposition guide rods (5). The decomposition guide rods (5) extend out of the side wall of the central guide block (3) and are fixedly connected to one end of the vibration damping airbag (6). The other end of the vibration damping airbag (6) is fixedly connected to the side wall of the vibration-proof support (1); The described shock-absorbing airbag (6) is connected to a pneumatic pressure regulating system, and the pneumatic pressure of the four shock-absorbing airbags (6) corresponding to the movement direction of the support block (4) is regulated through the pneumatic pressure regulating system to form buffer shock absorption. The described anti-vibration support (1) is installed on the support seats (20) in the upper and lower directions and is arranged at the four corners to limit or fix the upper and lower four corners of the DC system support (23). The upper and lower support seats (20) are respectively fixed to the upper and lower walls of the vehicle, and buffer pads (24) are provided under the lower anti-vibration support (1) and on the upper anti-vibration support (1). The support seats (20) arranged separately in the upper and lower parts are respectively provided with a top acceleration sensor (21) and a bottom acceleration sensor (22).

2. The vibration damping method of the anti-vibration system of the AC / DC emergency power repair vehicle according to claim 1, characterized in that The described pneumatic pressure regulating system includes a supercharging air pump (8) that provides a reference air pressure. The output end of the supercharging air pump (8) is connected to a first pressure transmission pipeline (9) and a second pressure transmission pipeline (10). A first pipeline proportional pressure reducing valve (11) and a second pipeline proportional pressure increasing valve (12) are respectively provided on the first pressure transmission pipeline (9) and the second pressure transmission pipeline (10). The first pressure transmission pipeline (9) is connected to the shock-absorbing airbag (6) through an airbag one-way intake valve (18), and the second pipeline proportional pressure increasing valve (12) is connected to the shock-absorbing airbag (6) through a pressure maintaining and regulating system and an accumulator one-way exhaust valve (16).

3. The vibration damping method of the anti-vibration system of the AC / DC emergency power repair vehicle according to claim 2, characterized in that The described pressure maintaining and regulating system includes four accumulator one-way intake valves (13) connected to the second pressure transmission pipeline (10). The accumulator one-way intake valve (13) is connected to the input end of the accumulator (14). The output end of the accumulator (14) is provided with an accumulator proportional pressure regulating valve (15), and the output end of the accumulator proportional pressure regulating valve (15) is connected to the accumulator one-way exhaust valve (16). An airbag pressure sensor (17) is provided on the connection pipeline between the shock-absorbing airbag (6) and the accumulator one-way exhaust valve (16) or the airbag one-way intake valve (18).

4. The vibration damping method of the anti-vibration system of the AC / DC emergency power repair vehicle according to claim 3, characterized in that, A controllable pressure relief valve (19) is provided on the shock-absorbing airbag (6).

5. The vibration damping method of the anti-vibration system of the AC / DC emergency power repair vehicle according to claim 4, characterized in that, In the second step, the specific process of filling the four shock-absorbing airbags (6) with air pressure reaching P1 is as follows: The supercharging air pump (8) starts to reach the rated pressure of the pump body. After the first pressure transmission pipeline (9) is depressurized by the first pipeline proportional pressure reducing valve (11), the pipeline pressure is P1, and gas is filled into the shock-absorbing airbag (6) through the airbag one-way intake valve (18) until the pressure value of the airbag pressure sensor (17) reaches P1. At the same time, after the second pressure transmission pipeline (10) is pressurized by the second pipeline proportional pressure increasing valve (12), it reaches the pressure P2, P2 > P1, and energy storage gas is filled into the accumulator (14) through the accumulator one-way intake valve (13). At this time, the accumulator proportional pressure regulating valve (15) is in the closed state. Then the supercharging air pump (8) is turned off, and the shock-absorbing airbag (6) maintains the air pressure P1. If the air pressure in the subsequent shock-absorbing airbag (6) drops below the allowable value, the accumulator proportional pressure regulating valve (15) is activated to adjust the pressure at its output end to P1, and the shock-absorbing airbag (6) is pressurized through the accumulator one-way exhaust valve (16) until the internal air pressure returns to P1, and then the accumulator proportional pressure regulating valve (15) returns to the closed state.

6. The vibration damping method of the anti-vibration system of the AC / DC emergency power repair vehicle according to claim 5, characterized in that In the third step described above, when the acceleration value is within the threshold set for the normal driving state, the vibration prevention system on the upper and lower support seats (20) provides real-time vibration prevention air pressure to the vibration reduction air bags (6) corresponding to the acceleration value in the sub-directions by the air pressure regulation system according to the detected acceleration value. The vibration prevention air pressure provides a vibration prevention force opposite to the acceleration sub-direction, and the vibration prevention force is used to reduce the vibration of the load between the four vibration prevention supports (1).

7. The vibration damping method of the anti-vibration system of the AC / DC emergency power repair vehicle according to claim 6, characterized in that, The support block (4) is provided with a cabinet corner limit (7), and the cabinet corner limit (7) is used for limiting the four corners of the DC system and vibration reduction conduction.

8. The vibration damping method of the anti-vibration system of the AC / DC emergency power repair vehicle according to claim 7, characterized in that, The cabinet corner limit (7) is a right-angle limit or a circular ring limit. When it is a right-angle limit, the right-angle limits on the four support blocks (4) are arranged oppositely to enclose the four corners of the DC system cabinet. When it is a circular ring limit, the cylinders at the upper and lower parts of the DC system cabinet are inserted into the circular ring limit.

9. The damping method of the anti-vibration system of the AC / DC emergency power repair vehicle according to claim 8, characterized in that, When the cabinet corner limit (7) is a right-angle limit, each right-angle limit at the four corners of the support seat (20) can only provide buffering in two directions. When the acceleration in the emergency state is detected in the fourth step, the right-angle sides opposite to the X-axis and Y-axis sub-acceleration directions corresponding to the acceleration on the right-angle limit provide buffering.

10. The vibration damping method of the anti-vibration system of the AC / DC emergency power repair vehicle according to claim 8, characterized in that When the cabinet corner limit (7) is a circular ring limit, each circular ring limit at the four corners of the support seat (20) can provide buffering in four directions. When the acceleration in the emergency state is detected in the fourth step, the decomposition guide rods (5) opposite to the X-axis and Y-axis sub-acceleration directions corresponding to the acceleration on each support block (4) provide buffering.

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