Inflating system and inflation method of water trestle

Abstract

The present invention discloses an inflation system and inflation method for a water trestle. The inflation system comprises a rubber airbag portion, an inflation portion, and an electrical control portion. The rubber airbag portion includes two or more side airbags, each used to provide buoyancy to the bridge span on water. Each side airbag is equipped with a vent pipe, each vent pipe being equipped with an electromagnetic ball valve. The inflation portion comprises a vehicle-mounted inflation portion and a bridge span inflation portion. The vehicle-mounted inflation portion is used to quickly inflate and deflate the side airbags, while the bridge span inflation portion is used to replenish air in the side airbags. The electrical control portion is used to control the opening and closing of all electromagnetic ball valves based on the air pressure within the side airbags to inflate, deflate, or replenish the side airbags. The present invention enables simultaneous inflation of multiple side airbags before the trestle floods, simultaneous deflating of multiple side airbags before the trestle is loaded onto a carrier vehicle, and replenishment of leaking side airbags after pressure drops while the trestle is sailing on water.

Description

Technical Field

[0001] The invention belongs to the technical field of water trestle bridges, and particularly relates to an inflation system and an inflation method of a water trestle bridge. Background Art

[0002] Before a certain water trestle is flooded, multiple side airbags must be inflated simultaneously. Before loading onto a carrier, these airbags must be deflated simultaneously. To ensure the trestle's erection time, the inflation and deflation times must be kept to a minimum. Once the airbags are inflated, the pressure drop caused by air leakage during navigation can lead to insufficient buoyancy, hampering navigation operations. Summary of the Invention

[0003] In view of this, the present invention provides an inflation system and inflation method for a water pier, which can inflate multiple side airbags at the same time before the pier is flooded, and simultaneously deflat the multiple side airbags before the pier is loaded onto a carrier vehicle. When the pier is sailing on the water, the side airbags can be replenished with air after the air pressure drops due to leakage.

[0004] The present invention is achieved through the following technical solutions:

[0005] An inflation system for a water trestle comprises a rubber airbag part, an inflation part and an electrical control part;

[0006] The rubber airbag part includes two or more side airbags of the same size, which are used to provide buoyancy to the bridge span on water; each side airbag is equipped with a vent pipe, and each vent pipe is equipped with an electromagnetic ball valve;

[0007] The inflatable part includes: a vehicle-mounted inflatable part and a bridge span inflatable part; the vehicle-mounted inflatable part is located on the bridge transport vehicle and is used to quickly inflate and deflate the opposite side airbag when the bridge span is connected to the bridge transport vehicle; the bridge span inflatable part is located on the bridge span and is used to replenish the opposite side airbag when the bridge span is separated from the bridge transport vehicle;

[0008] The electrical control part is used to control the opening and closing of all electromagnetic ball valves according to the air pressure value in the side airbag to inflate, exhaust or replenish air to the side airbag.

[0009] Furthermore, all ventilation pipes are connected through a connecting pipe; one or more connecting joint pipes are provided in the middle of the connecting pipe; a quick-change joint is installed at the end of each connecting joint pipe, and an electromagnetic ball valve is installed on each connecting joint pipe.

[0010] Furthermore, the bridge span inflation part includes: a bridge span high-pressure blower and a bridge span hydraulic motor;

[0011] The air outlet end of the bridge span high-pressure blower is connected to and communicates with the connecting pipe through a pipe B, and an electromagnetic ball valve 5 is installed on the pipe B;

[0012] The bridge span hydraulic motor is connected to the bridge span high-pressure blower and is used to drive the bridge span high-pressure blower to rotate clockwise and supply air.

[0013] Furthermore, the vehicle-mounted inflation part includes: a vehicle-mounted high-pressure blower, a vehicle-mounted hydraulic motor and a gas circuit;

[0014] The gas circuit is provided with an inlet pipe and an exhaust pipe, one end of the inlet pipe is in communication with the gas circuit, and the other end is in communication with the external atmosphere, and one end of the exhaust pipe is in communication with the gas circuit, and the other end is in communication with the external atmosphere; an electromagnetic ball valve 10 is installed on the inlet pipe, and an electromagnetic ball valve 8 is installed on the exhaust pipe; the gas circuit is also provided with two parallel electromagnetic ball valves, namely, electromagnetic ball valve 9 and electromagnetic ball valve 11, and the electromagnetic ball valve 9 is closer to the exhaust pipe than the electromagnetic ball valve 11, and the electromagnetic ball valve 11 is closer to the inlet pipe than the electromagnetic ball valve 9;

[0015] The gas circuit is detachably connected to a quick-change joint of any connecting joint pipe through pipeline A, so that the gas circuit communicates with the connecting joint pipe, and the intersection of pipeline A and the gas circuit is located between electromagnetic ball valve nine and electromagnetic ball valve eleven;

[0016] The on-board high-pressure blower is connected in series to the gas circuit and is located between the air intake pipe and the exhaust pipe, with the air intake end of the on-board high-pressure blower located on the side where the air intake pipe is located, and the air outlet end of the on-board high-pressure blower located on the side where the exhaust pipe is located;

[0017] The vehicle-mounted hydraulic motor is connected to the vehicle-mounted high-pressure blower and is used to drive the vehicle-mounted high-pressure blower to rotate clockwise to supply air.

[0018] Furthermore, the electrical control part includes a control unit and pressure sensors equal in number to the side airbags; each vent pipe is equipped with a pressure sensor.

[0019] The pressure sensors are used to detect the air pressure values ​​in the corresponding side airbags and send the air pressure values ​​to the control unit. The control unit controls the opening and closing of all electromagnetic ball valves according to the received air pressure values ​​to inflate, deflat or replenish air in the side airbags.

[0020] A method for inflating an inflation system of a water trestle, the inflation method being based on the inflation system of the water trestle, the method comprising:

[0021] When the bridge transporter is not separated from the bridge span, the on-board inflation part is detachably connected to the quick-change connector of any connecting joint pipe. At this time, the solenoid ball valve five on the inflation part of the bridge span is closed, and then the solenoid ball valve nine and the solenoid ball valve ten are opened, and the solenoid ball valve eight and the solenoid ball valve eleven are closed, and at the same time, the solenoid ball valves on the ventilation pipes of all side airbags and the solenoid ball valves on the connecting joint pipe are opened; the on-board hydraulic motor is started to drive the on-board high-pressure blower to rotate clockwise and inhale air through the intake pipe, and the inhaled air enters the connecting joint pipe, the ventilation pipe and all the side airbags in sequence through the opened solenoid ball valve nine, and the on-board high-pressure blower quickly inflates all the side airbags at the same time; when the pressure sensor detects that the air pressure in each side airbag reaches the set value, the control unit closes the solenoid ball valves on all ventilation pipes to complete the inflation process of the side airbags;

[0022] After the inflation process of the side airbag is completed, the bridge span is separated from the bridge transporter, and the diesel engine inside the bridge span drives the bridge span to sail on the water; when the pressure sensor detects that the air pressure in the corresponding side airbag drops to the set value, the diesel engine starts the bridge span hydraulic motor, driving the bridge span high-pressure blower to rotate clockwise and inhale air, and at the same time opens the electromagnetic ball valve five on the inflation part of the bridge span and the electromagnetic ball valve corresponding to the side airbag with reduced air pressure, closes the electromagnetic ball valve on the connecting joint pipe, and the bridge span high-pressure blower replenishes air to the side airbag with reduced air pressure. When the pressure sensor corresponding to the side airbag detects that the air pressure in the side airbag reaches the set value, all the electromagnetic ball valves are closed, and the side airbag stops replenishing air, completing the timely air replenishment of the side airbag;

[0023] When the bridge span navigation operation is completed and the bridge span is connected to the bridge transporter, the on-board inflation part is detachably connected to the quick-change connector of any connecting joint pipe. At this time, the electromagnetic ball valve five on the bridge span inflation part is closed, and then the electromagnetic ball valve eight and the electromagnetic ball valve eleven are opened, and the electromagnetic ball valve nine and the electromagnetic ball valve ten are closed; at the same time, the electromagnetic ball valves on the ventilation pipes of all side airbags and the electromagnetic ball valves on the connecting joint pipe are opened; the on-board hydraulic motor is started to drive the on-board blower to rotate clockwise, and the air in all side airbags is sucked into the ventilation pipe, the connecting pipe and the connecting joint pipe in sequence, and finally the air is discharged through the exhaust pipe. The on-board high-pressure blower quickly pumps air into all side airbags at the same time; when the pressure sensor detects that the air pressure in each side airbag reaches the set value, the control unit closes the electromagnetic ball valves on all ventilation pipes to complete the side airbag pumping process.

[0024] Beneficial effects:

[0025] (1) The present invention provides an inflation system for a water trestle, wherein the inflation portion includes a vehicle-mounted inflation portion and a bridge span inflation portion. Before the trestle (i.e., the bridge span) is flooded, multiple side airbags can be inflated simultaneously through the vehicle-mounted inflation portion. Before the trestle is loaded onto a carrier vehicle, multiple side airbags can be deflated simultaneously through the vehicle-mounted inflation portion. When the trestle is sailing on the water, the side airbags can be promptly replenished with air through the bridge span inflation portion after the pressure of the side airbags decreases due to leakage.

[0026] (2) The present invention provides an inflation system for a water pier, wherein the span inflation part includes a span high-pressure blower and a span hydraulic motor, which can start the span high-pressure blower to replenish air to the side airbag in time when the air pressure in the side airbag is lower than the set value.

[0027] (3) The present invention provides an inflation system for a water pier, wherein the vehicle-mounted inflation part includes: a vehicle-mounted high-pressure blower, a vehicle-mounted hydraulic motor and a gas circuit; by starting the vehicle-mounted high-pressure blower, the side airbags can be inflated and deflated simultaneously.

[0028] (4) The present invention provides an inflation method for an inflation system of a water trestle, which utilizes different combinations of electromagnetic ball valves to efficiently complete the simultaneous inflation and deflating of the side airbags by the on-board high-pressure blower without changing the direction of the on-board high-pressure blower; when the pressure sensor detects that the air pressure in the side airbag is lower than the set value, starting the bridge span high-pressure blower can replenish air to the side airbag in time, thereby ensuring the navigation operation of the water trestle; the inflation system of the water trestle is simple to operate, fast to respond, reliable in performance, and highly automated. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A top view of the bridge span and rubber airbag portion of the present invention;

[0030] Figure 2 This is a front view of the bridge span and rubber airbag portion of the present invention;

[0031] Figure 3 A diagram showing the components of the inflation system of the present invention;

[0032] Among them, 1—vehicle-mounted hydraulic motor, 2—vehicle-mounted high-pressure blower, 3—vehicle-mounted safety valve, 4—electromagnetic ball valve, 5—bridge span hydraulic motor, 6—bridge span high-pressure blower, 7—bridge span safety valve, 8—pressure sensor, 9—quick-change connector, 10—side airbag one, 11—side airbag two, 12—side airbag three, 13—side airbag four, 14—ventilation pipe, 15—bridge span, 16—connecting pipe, 17—intake pipe, 18—exhaust pipe. DETAILED DESCRIPTION

[0033] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0034] Example 1:

[0035] This embodiment provides an inflation system for a water trestle, comprising: a rubber airbag part, an inflation part, and an electrical control part;

[0036] See attached Figure 1-3 The rubber airbag portion includes two or more side airbags of the same size, and the two or more side airbags are used to provide buoyancy to the trestle (i.e., span 15) on the water;

[0037] In this embodiment, four side airbags of equal size are used, namely side airbag 1 10, side airbag 2 11, side airbag 3 12, and side airbag 4 13. The four side airbags are installed on both sides of the bridge span 15, with two side airbags installed on each side of the bridge span 15. Side airbag 10 and side airbag 3 12 are located on the same side of the bridge span 15, while side airbag 2 11 and side airbag 4 13 are located on the other side of the bridge span 15.

[0038] Each side airbag is equipped with a vent pipe 14, and each vent pipe 14 is equipped with an electromagnetic ball valve 4, that is, the vent pipe 1 of side airbag 1 10 is equipped with an electromagnetic ball valve 1 SV1, the vent pipe 2 of side airbag 2 11 is equipped with an electromagnetic ball valve 2 SV2, the vent pipe 3 of side airbag 3 12 is equipped with an electromagnetic ball valve 3 SV3, and the vent pipe 4 of side airbag 4 13 is equipped with an electromagnetic ball valve 4 SV4;

[0039] The four ventilation tubes 14 are connected through a connecting tube 16; that is, the ends of the ventilation tubes 14 on the side airbags 10 and 12 are connected to one end of the connecting tube 16, and the ends of the ventilation tubes 14 on the side airbags 2 11 and 13 are connected to the other end of the connecting tube 16; at least one connecting joint tube is provided in the middle of the connecting tube 16, and this embodiment adopts two connecting joint tubes, namely, the two connecting joint tubes are connected to the connecting joint tube 1 and the connecting joint tube 2; each connecting joint tube is equipped with a quick-change connector 9 at the end, and each connecting joint tube is equipped with an electromagnetic ball valve 4, that is, the electromagnetic ball valve 6 SV6 is installed on the connecting joint tube 1, and the electromagnetic ball valve 7 SV7 is installed on the connecting joint tube 2;

[0040] The inflatable part includes: a vehicle-mounted inflatable part and a bridge span inflatable part; the vehicle-mounted inflatable part is located on the bridge transport vehicle and is used to quickly inflate and deflate the opposite side airbag when the bridge span is connected to the bridge transport vehicle; the bridge span inflatable part is located on the bridge span and is used to replenish the opposite side airbag when the bridge span is separated from the bridge transport vehicle;

[0041] Among them, see Appendix Figure 3 , the vehicle-mounted inflation part includes: a vehicle-mounted high-pressure blower 2, a vehicle-mounted hydraulic motor 1 and a gas circuit;

[0042] The gas circuit is provided with an intake pipe 17 and an exhaust pipe 18, one end of the intake pipe 17 is communicated with the gas circuit, and the other end is communicated with the external atmosphere, and one end of the exhaust pipe 18 is communicated with the gas circuit, and the other end is communicated with the external atmosphere; an electromagnetic ball valve 4 is installed on each of the intake pipe 17 and the exhaust pipe 18, that is, an electromagnetic ball valve 10 SV10 is installed on the intake pipe 17, and an electromagnetic ball valve 8 SV8 is installed on the exhaust pipe 18; the gas circuit is also provided with two parallel electromagnetic ball valves 4, that is, an electromagnetic ball valve 9 SV9 and an electromagnetic ball valve 11 SV11, and the electromagnetic ball valve 9 SV9 is closer to the exhaust pipe 18 than the electromagnetic ball valve 11 SV11, and the electromagnetic ball valve 11 SV11 is closer to the intake pipe 17 than the electromagnetic ball valve 9 SV9;

[0043] The gas circuit is detachably connected to any one of the quick-change connectors 9 of the connecting joint pipe via the pipeline A, and the gas circuit is in communication with the connecting joint pipe. The intersection of the pipeline A and the gas circuit is located between the electromagnetic ball valve nine SV9 and the electromagnetic ball valve eleven SV11.

[0044] The on-board high-pressure blower 2 is connected in series to the gas circuit and is located between the air intake pipe 17 and the exhaust pipe 18, with the air intake end of the on-board high-pressure blower 2 located on the side where the air intake pipe 17 is located, and the air outlet end of the on-board high-pressure blower 2 located on the side where the exhaust pipe 18 is located;

[0045] The vehicle-mounted hydraulic motor 1 is connected to the vehicle-mounted high-pressure blower 2 and is used to drive the vehicle-mounted high-pressure blower 2 to rotate clockwise to supply air (the amount of air supplied when the vehicle-mounted high-pressure blower 2 rotates counterclockwise is very small);

[0046] The gas circuit is also equipped with a vehicle-mounted safety valve 3. Preferably, the vehicle-mounted safety valve 3 is located between the vehicle-mounted high-pressure blower 2 and the exhaust pipe 18.

[0047] The bridge span inflation part includes: a bridge span high pressure blower 6 and a bridge span hydraulic motor 5;

[0048] The air outlet of the bridge span high-pressure blower 6 is connected to and communicates with the connecting pipe 16 through the pipeline B. A bridge span safety valve 7 and an electromagnetic ball valve 4 are installed on the pipeline B. The electromagnetic ball valve 4 is the electromagnetic ball valve 5 SV5;

[0049] The bridge span hydraulic motor 5 is connected to the bridge span high-pressure blower 6 and is used to drive the bridge span high-pressure blower 6 to rotate clockwise and supply air.

[0050] The electrical control section includes a control unit and pressure sensors 8 equal in number to the side airbags. This embodiment uses four pressure sensors 8, namely pressure sensor 1 P1, pressure sensor 2 P2, pressure sensor 3 P3, and pressure sensor 4 P4. The four pressure sensors 8 are mounted on four vent pipes 14 in a one-to-one correspondence, i.e., pressure sensor 1 P1 is mounted on vent pipe 1, pressure sensor 2 P2 is mounted on vent pipe 2, pressure sensor 3 P3 is mounted on vent pipe 3, and pressure sensor 4 P4 is mounted on vent pipe 4.

[0051] The four pressure sensors 8 are used to detect the air pressure values ​​in the corresponding side airbags and send the air pressure values ​​to the control unit. The control unit controls the opening and closing of 11 electromagnetic ball valves 4 according to the received air pressure values ​​to inflate, drain or replenish air to the side airbags, thereby realizing control and safety detection of the inflation system.

[0052] When the on-board inflation part inflates the side airbag, the air inlet pipe 17 is opened, the exhaust pipe 18 is closed, and the on-board high-pressure blower rotates clockwise to inflate the side airbag. When the pressure sensor detects that the air pressure in the side airbag reaches the set value, the control unit sends a control signal to shut down the airbag inflation system, so that the electromagnetic ball valve on the ventilation pipe is closed, and the side airbag inflation process is completed;

[0053] When the on-board inflation part is deflating the side airbag, if the scheme of switching the on-board hydraulic motor to reverse and make the on-board high-pressure blower rotate counterclockwise is adopted, since the air supply volume generated when the on-board high-pressure blower rotates counterclockwise is very small, the rapid deflating function cannot be achieved. At this time, the exhaust pipe 18 is opened and the air intake pipe 17 is closed. The on-board high-pressure blower still rotates clockwise to deflat the side airbag. When the pressure sensor detects that the air pressure in the side airbag reaches the set value, the control unit sends a control signal to shut down the airbag inflation system, so that the electromagnetic ball valve on the ventilation pipe is closed, and the side airbag deflating process is completed.

[0054] When the pressure sensor detects that the air pressure in the side airbag is lower than the set value, the electromagnetic ball valve on the bridge span inflation part is opened, and the electromagnetic ball valve on the ventilation pipe of the side airbag whose air pressure is lower than the set value is opened, and the bridge span inflation part is started to replenish air to the side airbag until the air pressure in the side airbag reaches the set value, and then the air replenishment is stopped.

[0055] Example 2:

[0056] This embodiment provides an inflation method for an inflation system of a water trestle based on the first embodiment. The inflation method is as follows:

[0057] When the bridge transport vehicle is not separated from the bridge span 15, the on-board inflation part is detachably connected to the quick-change connector 9 of any connecting connector pipe. In this embodiment, the on-board inflation part is connected to the quick-change connector 9 of the connecting connector pipe 1. At this time, the electromagnetic ball valve 5 SV5 and the electromagnetic ball valve 7 SV7 are closed, and then the electromagnetic ball valve 9 SV9 and the electromagnetic ball valve 10 SV10 are opened, the electromagnetic ball valve 8 SV8 and the electromagnetic ball valve 11 SV11 are closed, and the electromagnetic ball valve 1 SV1, the electromagnetic ball valve 2 SV2, the electromagnetic ball valve 3 SV3, the electromagnetic ball valve 4 SV4 and the electromagnetic ball valve 6 SV6 are opened at the same time; the on-board hydraulic motor 1 is started, driving the on-board high-pressure blower 2 to rotate clockwise and inhale air through the intake pipe 17. The inhaled air enters the connecting joint pipe one through the opened electromagnetic ball valve nine SV9, and then enters the connecting pipe 16 and the four ventilation pipes 14, and finally enters the side airbag one 10, side airbag two 11, side airbag three 12, and side airbag four 13. The on-board high-pressure blower 2 realizes the simultaneous rapid inflation of the side airbag one 10, side airbag two 11, side airbag three 12, and side airbag four 13; when the four pressure sensors P1, P2, P3, and P4 detect that the air pressure in each side airbag reaches the set value, the control unit closes the electromagnetic ball valve one SV1, electromagnetic ball valve two SV2, electromagnetic ball valve three SV3, electromagnetic ball valve four SV4, and electromagnetic ball valve six SV6, and the inflation process of the side airbag is completed.

[0058] After the inflation process of the side airbag is completed, the bridge span 15 is separated from the bridge transporter, and the diesel engine inside the bridge span 15 drives the bridge span 15 to sail on the water; when the pressure sensors P1, P2, P3, and P4 detect that the air pressure in the corresponding side airbag drops to the set value, the diesel engine starts the bridge span hydraulic motor 5, driving the bridge span high-pressure blower 6 to rotate clockwise and inhale air, and at the same time opens the electromagnetic ball valve five SV5 and the electromagnetic ball valve corresponding to the side airbag with reduced air pressure, closes the electromagnetic ball valve six SV6 and the electromagnetic ball valve seven SV7, and the bridge span high-pressure blower 6 replenishes air to the side airbag with reduced air pressure. When the pressure sensor corresponding to the side airbag detects that the air pressure in the side airbag reaches the set value, all the electromagnetic ball valves are closed, and the side airbag stops replenishing air, completing the timely replenishment of the side airbag.

[0059] When the navigation operation of the bridge span 15 is completed and the bridge span 15 is connected to the bridge transporter and is about to be loaded, the on-board inflation part is detachably connected to the quick-change connector 9 of any connecting joint pipe. In this embodiment, the on-board inflation part is connected to the quick-change connector 9 of the connecting joint pipe 1. At this time, the electromagnetic ball valve 5 SV5 and the electromagnetic ball valve 7 SV7 are closed, and then the electromagnetic ball valve 8 SV8 and the electromagnetic ball valve 11 SV11 are opened, and the electromagnetic ball valve 9 SV9 and the electromagnetic ball valve 10 SV10 are closed; at the same time, the electromagnetic ball valve 1 SV1, the electromagnetic ball valve 2 SV2, the electromagnetic ball valve 3 SV3, the electromagnetic ball valve 4 SV4 and the electromagnetic ball valve 6 SV6 are opened; the on-board hydraulic motor 1 is started to drive the on-board blower 2 to rotate clockwise It rotates and draws the air in the side airbag 1 10, the side airbag 2 11, the side airbag 3 12 and the side airbag 4 13 into the four ventilation pipes 14, and then into the connecting pipe 16 and the connecting joint pipe 1, and finally discharges the air through the exhaust pipe 18. The on-board high-pressure blower 2 realizes rapid exhaust of the side airbag 1 10, the side airbag 2 11, the side airbag 3 12 and the side airbag 4 13 at the same time; when the four pressure sensors P1, P2, P3 and P4 detect that the air pressure in each side airbag reaches the set value, the control unit closes the electromagnetic ball valve 1 SV1, the electromagnetic ball valve 2 SV2, the electromagnetic ball valve 3 SV3, the electromagnetic ball valve 4 SV4 and the electromagnetic ball valve 6 SV6, and the side airbag exhaust process is completed.

[0060] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An inflation system for a water trestle, characterized in that: include: Rubber airbag part, inflation part and electrical control part; The rubber airbag part includes two or more side airbags of the same size, which are used to provide buoyancy to the bridge span on water; each side airbag is equipped with a vent pipe, and each vent pipe is equipped with an electromagnetic ball valve; The inflatable part includes: a vehicle-mounted inflatable part and a bridge span inflatable part; the vehicle-mounted inflatable part is located on the bridge transport vehicle and is used to quickly inflate and deflate the opposite side airbag when the bridge span is connected to the bridge transport vehicle; the bridge span inflatable part is located on the bridge span and is used to replenish the opposite side airbag when the bridge span is separated from the bridge transport vehicle; The electrical control part is used to control the opening and closing of all electromagnetic ball valves according to the air pressure value in the side airbag to inflate, exhaust or replenish air to the side airbag; All ventilation pipes are connected through a connecting pipe; one or more connecting joint pipes are provided in the middle of the connecting pipe; a quick-change joint is installed at the end of each connecting joint pipe, and an electromagnetic ball valve is installed on each connecting joint pipe; The vehicle-mounted inflation part includes: a vehicle-mounted high-pressure blower, a vehicle-mounted hydraulic motor and a gas circuit; The gas circuit is provided with an inlet pipe and an exhaust pipe, one end of the inlet pipe is in communication with the gas circuit, and the other end is in communication with the external atmosphere, and one end of the exhaust pipe is in communication with the gas circuit, and the other end is in communication with the external atmosphere; an electromagnetic ball valve 10 is installed on the inlet pipe, and an electromagnetic ball valve 8 is installed on the exhaust pipe; the gas circuit is also provided with two parallel electromagnetic ball valves, namely, electromagnetic ball valve 9 and electromagnetic ball valve 11, and the electromagnetic ball valve 9 is closer to the exhaust pipe than the electromagnetic ball valve 11, and the electromagnetic ball valve 11 is closer to the inlet pipe than the electromagnetic ball valve 9; The gas circuit is detachably connected to a quick-change joint of any connecting joint pipe through pipeline A, so that the gas circuit communicates with the connecting joint pipe, and the intersection of pipeline A and the gas circuit is located between electromagnetic ball valve nine and electromagnetic ball valve eleven; The on-board high-pressure blower is connected in series to the gas circuit and is located between the air intake pipe and the exhaust pipe, with the air intake end of the on-board high-pressure blower located on the side where the air intake pipe is located, and the air outlet end of the on-board high-pressure blower located on the side where the exhaust pipe is located; The vehicle-mounted hydraulic motor is connected to the vehicle-mounted high-pressure blower and is used to drive the vehicle-mounted high-pressure blower to rotate clockwise to supply air.

2. The inflation system of a water trestle according to claim 1, characterized in that: The bridge span inflation part includes: a bridge span high pressure blower and a bridge span hydraulic motor; The air outlet end of the bridge span high-pressure blower is connected to and communicates with the connecting pipe through a pipe B, and an electromagnetic ball valve 5 is installed on the pipe B; The bridge span hydraulic motor is connected to the bridge span high-pressure blower and is used to drive the bridge span high-pressure blower to rotate clockwise and supply air.

3. The inflation system of a water trestle according to claim 2, characterized in that: The electrical control part includes a control unit and pressure sensors equal in number to the side airbags; each ventilator is equipped with a pressure sensor. The pressure sensors are used to detect the air pressure values ​​in the corresponding side airbags and send the air pressure values ​​to the control unit. The control unit controls the opening and closing of all electromagnetic ball valves according to the received air pressure values ​​to inflate, deflat or replenish air in the side airbags.

4. A method for inflating an inflation system of a water trestle, the inflation method being based on the inflation system of the water trestle of claim 3, characterized in that: The method is: When the bridge transporter is not separated from the bridge span, the on-board inflation part is detachably connected to the quick-change connector of any connecting joint pipe. At this time, the solenoid ball valve five on the inflation part of the bridge span is closed, and then the solenoid ball valve nine and the solenoid ball valve ten are opened, and the solenoid ball valve eight and the solenoid ball valve eleven are closed, and at the same time, the solenoid ball valves on the ventilation pipes of all side airbags and the solenoid ball valves on the connecting joint pipe are opened; the on-board hydraulic motor is started to drive the on-board high-pressure blower to rotate clockwise and inhale air through the intake pipe, and the inhaled air enters the connecting joint pipe, the ventilation pipe and all the side airbags in sequence through the opened solenoid ball valve nine, and the on-board high-pressure blower quickly inflates all the side airbags at the same time; when the pressure sensor detects that the air pressure in each side airbag reaches the set value, the control unit closes the solenoid ball valves on all ventilation pipes to complete the inflation process of the side airbags; After the inflation process of the side airbag is completed, the bridge span is separated from the bridge transporter, and the diesel engine inside the bridge span drives the bridge span to sail on the water; when the pressure sensor detects that the air pressure in the corresponding side airbag drops to the set value, the diesel engine starts the bridge span hydraulic motor, driving the bridge span high-pressure blower to rotate clockwise and inhale air, and at the same time opens the electromagnetic ball valve five on the inflation part of the bridge span and the electromagnetic ball valve corresponding to the side airbag with reduced air pressure, closes the electromagnetic ball valve on the connecting joint pipe, and the bridge span high-pressure blower replenishes air to the side airbag with reduced air pressure. When the pressure sensor corresponding to the side airbag detects that the air pressure in the side airbag reaches the set value, all the electromagnetic ball valves are closed, and the side airbag stops replenishing air, completing the timely air replenishment of the side airbag; When the bridge span navigation operation is completed and the bridge span is connected to the bridge transporter, the on-board inflation part is detachably connected to the quick-change connector of any connecting joint pipe. At this time, the electromagnetic ball valve five on the bridge span inflation part is closed, and then the electromagnetic ball valve eight and the electromagnetic ball valve eleven are opened, and the electromagnetic ball valve nine and the electromagnetic ball valve ten are closed; at the same time, the electromagnetic ball valves on the ventilation pipes of all side airbags and the electromagnetic ball valves on the connecting joint pipe are opened; the on-board hydraulic motor is started to drive the on-board blower to rotate clockwise, and the air in all side airbags is sucked into the ventilation pipe, the connecting pipe and the connecting joint pipe in sequence, and finally the air is discharged through the exhaust pipe. The on-board high-pressure blower quickly pumps air into all side airbags at the same time; when the pressure sensor detects that the air pressure in each side airbag reaches the set value, the control unit closes the electromagnetic ball valves on all ventilation pipes to complete the side airbag pumping process.

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