Energy compensation control system for embarkation trestle

Abstract

The invention relates to the technical field of ships and ocean structures, and discloses an embarkation trestle energy compensation control system, the embarkation trestle comprises a base, a bridge frame and a trestle oil cylinder used for driving the bridge frame to rotate, the system comprises a hydraulic pump station, a first reversing valve, an energy storage assembly, a second reversing valve and a third reversing valve, the piston rod-free side and the piston rod side of the oil cylinder are connected with the hydraulic pump station and the energy storage assembly respectively, the hydraulic pump station controls the hydraulic flow direction through the first reversing valve to achieve lifting and lowering of the bridge frame, and the energy storage assembly stores gravitational potential energy through the second reversing valve and the third reversing valve when the bridge frame is lowered. And when the bridge is lifted, high-pressure oil is released for energy compensation, so that the output requirement of the hydraulic pump station is reduced, the consumption of electric energy can be reduced, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of ships and marine structures, in particular to an energy compensation control system for a boarding trestle. Background Art

[0002] The wave compensation boarding trestle is used for boarding operations between ships and offshore platforms. It can compensate for the heave, roll and pitch of the ship by controlling the movement of hydraulic cylinders in different directions installed on the boarding trestle, keep the boarding trestle stable and fixed between the ship and the offshore facilities, and make the transfer of personnel at sea safer and more convenient.

[0003] The equipment layout space and available electric energy of the ship are limited. The size, weight, power and other related parameters of the wave compensation boarding bridge are a major factor affecting its application on the ship. If the bridge of the boarding bridge is lifted and lowered only by electric energy driving the oil cylinder, the energy consumption is extremely high, and the requirements for the ship's energy storage device are high, making it difficult to maintain the compensation for the ship's heave and sink for a long time. Summary of the invention

[0004] The purpose of the present invention is to provide an energy compensation control system for a boarding trestle. When the bridge is lowered, the gravitational potential energy of the bridge is used to press oil into the energy storage component for energy storage. When the bridge is lifted, the high-pressure oil in the energy storage component is used to assist in lifting the bridge, which can reduce the consumption of electric energy and lower the energy output requirements of the hydraulic pump station.

[0005] In order to achieve the above-mentioned object, the present invention provides an energy compensation control system for a boarding trestle, the boarding trestle includes a base, a bridge frame and a trestle oil cylinder, one end of the bridge frame is hinged to the base, the trestle oil cylinder is hinged to the base, the power output end of the trestle oil cylinder is hinged to the bridge frame, the trestle oil cylinder is located below the bridge frame, the trestle oil cylinder is used to drive the bridge frame to rotate, the trestle oil cylinder has a first oil port and a second oil port, the first oil port is located on the side without a piston rod, and the second oil port is located on the side of the piston rod, including:

[0006] A hydraulic pump station, wherein the hydraulic pump station has an oil outlet and an oil inlet;

[0007] a first reversing valve, the first reversing valve having a first valve port, a second valve port, a third valve port and a fourth valve port, the first reversing valve having a first state, a second state and a third state, when the first reversing valve is in the first state, the first valve port is communicated with the fourth valve port, and the second valve port is communicated with the third valve port; when the first reversing valve is in the second state, the third valve port is communicated with the fourth valve port, and the first valve port is not communicated with the second valve port; when the first reversing valve is in the third state, the first valve port is communicated with the third valve port, and the second valve port is communicated with the fourth valve port; the oil outlet is communicated with the third valve port, the oil inlet is communicated with the fourth valve port, the first valve port is communicated with the first oil port, and the second valve port is communicated with the second oil port;

[0008] An energy storage component, wherein the energy storage component has an input port and an output port, the input port is communicated with the fourth valve port, and the output port is communicated with the third valve port;

[0009] A second reversing valve, the second reversing valve is arranged between the input port and the fourth valve port, and the second reversing valve has a connected state and a disconnected state;

[0010] The third reversing valve has the same structure as the second reversing valve and is disposed between the output port and the third valve port.

[0011] Furthermore, the boarding trestle energy compensation control system further comprises a pressure stabilizing valve group, the pressure stabilizing valve group comprises a pressure stabilizing reversing valve, the pressure stabilizing reversing valve has a fifth valve port, a sixth valve port, a seventh valve port and an eighth valve port, and the pressure stabilizing reversing valve has a fourth state, a fifth state and a sixth state;

[0012] When the pressure-stabilizing reversing valve is in the fourth state, the fifth valve port is connected to the seventh valve port, the sixth valve port is connected to the eighth valve port, a first one-way valve is provided between the fifth valve port and the seventh valve port, the liquid flow direction of the first one-way valve is from the seventh valve port to the fifth valve port, and a throttle valve is provided between the sixth valve port and the eighth valve port;

[0013] When the pressure-stabilizing reversing valve is in the fifth state, the fifth valve port is communicated with the seventh valve port, the sixth valve port is communicated with the eighth valve port, a second one-way valve is provided between the fifth valve port and the seventh valve port, the liquid flow direction of the second one-way valve is from the seventh valve port to the fifth valve port, a third one-way valve is provided between the sixth valve port and the eighth valve port, the liquid flow direction of the third one-way valve is from the eighth valve port to the sixth valve port;

[0014] When the pressure-stabilizing reversing valve is in the sixth state, the fifth valve port is connected to the seventh valve port, the sixth valve port is connected to the eighth valve port, a throttle valve is provided between the fifth valve port and the seventh valve port, a fourth one-way valve is provided between the sixth valve port and the eighth valve port, and the liquid flow direction of the fourth one-way valve is from the eighth valve port to the sixth valve port;

[0015] The seventh valve port is communicated with the first valve port, the eighth valve port is communicated with the second valve port, the fifth valve port is communicated with the first oil port, and the sixth valve port is communicated with the second oil port.

[0016] Furthermore, the fifth valve port is connected to the first oil port via a first pipeline, the sixth valve port is connected to the second oil port via a second pipeline, a first overflow valve and a second overflow valve are connected in parallel between the first pipeline and the second pipeline, and the liquid flow directions of the first overflow valve and the second overflow valve are opposite.

[0017] Furthermore, the energy storage component includes an energy storage unit, the energy storage unit has an energy storage port, the energy storage port is connected to the second reversing valve, a fifth one-way valve is arranged between the energy storage port and the second reversing valve, the liquid flow direction of the fifth one-way valve is from the second reversing valve to the energy storage port, the energy storage port is connected to the third reversing valve, a sixth one-way valve is arranged between the energy storage port and the third reversing valve, and the liquid flow direction of the sixth one-way valve is from the energy storage port to the third reversing valve.

[0018] Furthermore, the first pipeline is connected to a first pressure gauge, the second pipeline is connected to a second pressure gauge, and the energy storage port is connected to a third pressure gauge.

[0019] Furthermore, the boarding trestle energy compensation control system also includes a fourth reversing valve and a control component. The first pipeline is connected to a first pressure sensor, the second pipeline is connected to a second pressure sensor, and the energy storage port is connected to a third pressure sensor. The fourth reversing valve has the same structure as the second reversing valve, and a third pipeline is connected between the fourth valve port and the oil inlet. The fourth reversing valve is located on the third pipeline and on the downstream side of the oil inlet end of the second reversing valve. The control component is electrically connected to the first reversing valve, the second reversing valve, the third reversing valve, the first pressure sensor, the second pressure sensor, and the third pressure sensor.

[0020] Furthermore, the value of the first pressure gauge is recorded as P1, the value of the second pressure gauge is recorded as P2, and the value of the third pressure gauge is recorded as P3.

[0021] The control component is configured to:

[0022] When the bridge needs to be lifted, the first reversing valve is switched to the third state, the second reversing valve is switched to the disconnected state, the third reversing valve is switched to the connected state, and the fourth reversing valve is switched to the connected state. When P3<P1, the third reversing valve is switched to the disconnected state.

[0023] When the bridge needs to be lowered, the first reversing valve is switched to the first state, the second reversing valve is switched to the connected state, the third reversing valve is switched to the disconnected state, and the fourth reversing valve is switched to the disconnected state. When P3>P1, the second reversing valve is switched to the disconnected state, and the fourth reversing valve is switched to the connected state.

[0024] Furthermore, the hydraulic pump station includes an oil tank and a booster drive component, the oil tank is communicated with the oil outlet, and the booster drive component is arranged between the oil tank and the oil outlet.

[0025] Compared with the prior art, the energy compensation control system for a boarding trestle according to the embodiment of the present invention has the following beneficial effects: when the bridge needs to be lifted, the first reversing valve switches to the third state, the second reversing valve switches to the disconnected state, and the third reversing valve switches to the connected state. The oil of the hydraulic pump station flows from the oil outlet through the third valve port, the fourth valve port, and the first oil port in sequence to enter the piston rod-free side of the trestle cylinder. The oil on the piston rod side of the trestle cylinder flows from the second oil port through the second valve port, the fourth valve port, and the oil inlet in sequence to return to the hydraulic pump station. The oil of the energy storage component flows from the output port through the third reversing valve and merges with the oil flowing out of the oil outlet, and flows together to the piston rod-free side of the trestle cylinder. side to push the trestle oil cylinder to lift the bridge frame; when the bridge frame needs to be lowered, the first reversing valve switches to the first state, the second reversing valve switches to the connected state, and the third reversing valve switches to the disconnected state. The oil of the hydraulic pump station flows from the oil outlet through the third valve port, the second valve port, and the second oil port in sequence to enter the piston rod side of the trestle oil cylinder. Part of the oil in the piston rod-free side of the trestle oil cylinder flows through the first valve port, the fourth valve port, and the oil inlet in sequence and returns to the hydraulic pump station. The remaining part of the oil flows from the piston rod-free side of the trestle oil cylinder through the first valve port, the fourth valve port, the second reversing valve, and the input port in sequence to enter the energy storage assembly for storage, so as to assist in lifting the bridge frame next time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the pipeline of the boarding trestle energy compensation control system according to an embodiment of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the boarding trestle energy compensation control system of the embodiment of the present invention when the boarding trestle is lifted;

[0028] Figure 3It is a structural schematic diagram of the embarkation trestle of the embarkation trestle energy compensation control system according to an embodiment of the present invention when the embarkation trestle is lowered;

[0029] Figure 4 Schematic diagram of a first reversing valve of a boarding trestle energy compensation control system according to an embodiment of the present invention;

[0030] Figure 5 Schematic diagram of a pressure stabilizing valve group of a boarding trestle energy compensation control system according to an embodiment of the present invention;

[0031] Figure 6 Schematic diagram of an energy storage component of an energy compensation control system for a boarding trestle according to an embodiment of the present invention;

[0032] Figure 7 Schematic diagram of a hydraulic pump station of a boarding trestle energy compensation control system according to an embodiment of the present invention;

[0033] In the figure, 1, boarding trestle; 101, base; 102, bridge frame; 103, trestle oil cylinder; 1031, first oil port; 1032, second oil port;

[0034] 2. Hydraulic pump station; 201. Oil outlet; 202. Oil inlet; 203. Oil tank; 204. Boost drive;

[0035] 3. First reversing valve; 301. First valve port; 302. Second valve port; 303. Third valve port; 304. Fourth valve port;

[0036] 4. Energy storage component; 401. Input port; 402. Output port; 403. Energy storage unit; 4031. Energy storage port; 404. Fifth one-way valve; 405. Sixth one-way valve;

[0037] 5. Second reversing valve;

[0038] 6. The third reversing valve;

[0039] 7. Pressure-stabilizing valve group; 701. Pressure-stabilizing reversing valve; 7011. Fifth valve port; 7012. Sixth valve port; 7013. Seventh valve port; 7014. Eighth valve port; 7015. First check valve; 7016. Second check valve; 7017. Third check valve; 7018. Fourth check valve; 7019. Throttle valve;

[0040] 8. First pipeline;

[0041] 9. Second pipeline;

[0042] 10. The first overflow valve;

[0043] 11. Second relief valve;

[0044] 12. The first pressure gauge;

[0045] 13. Second pressure gauge;

[0046] 14. The third pressure gauge;

[0047] 15. The fourth reversing valve;

[0048] 16. The third pipeline

[0049] 17. Control components;

[0050] 18. A first pressure sensor;

[0051] 19. A second pressure sensor;

[0052] 20. The third pressure sensor. DETAILED DESCRIPTION

[0053] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0054] In the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", "lateral", "longitudinal" and the like used to indicate the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only used to facilitate the description of the present invention and simplify the description, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. For those of ordinary skill in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0055] In the description of the present invention, the terms "provided with", "set", "connected", and "placed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0057] The technical solution of the present invention is further described below in conjunction with embodiments and drawings.

[0058] like Figure 1 , 2 As shown in Figures 3 and 4, an energy compensation control system for a boarding trestle according to an embodiment of the present invention, the boarding trestle 1 comprises a base 101, a bridge frame 102 and a trestle cylinder 103, one end of the bridge frame 102 is hinged to the base 101, the trestle cylinder 103 is hinged to the base 101, the power output end of the trestle cylinder 103 is hinged to the bridge frame 102, the trestle cylinder 103 is located below the bridge frame 102, the trestle cylinder 103 is used to drive the bridge frame 102 to rotate, the trestle cylinder 103 has a first oil port 1031 and a second oil port 1032, the first oil port 1031 is located on the side without a piston rod, and the second oil port 1032 is located on the side of the piston rod, including:

[0059] The hydraulic pump station 2 has an oil outlet 201 and an oil inlet 202;

[0060] The first reversing valve 3 has a first valve port 301, a second valve port 302, a third valve port 303 and a fourth valve port 304. The first reversing valve 3 has a first state, a second state and a third state. When the first reversing valve 3 is in the first state, the first valve port 301 is connected to the fourth valve port 304, and the second valve port 302 is connected to the third valve port 303; when the first reversing valve 3 is in the second state, the third valve port 303 is connected to the fourth valve port 304, and the first valve port 301 is not connected to the second valve port 302; when the first reversing valve 3 is in the third state, the first valve port 301 is connected to the third valve port 303, and the second valve port 302 is connected to the fourth valve port 304; the oil outlet 201 is connected to the third valve port 303, the oil inlet 202 is connected to the fourth valve port 304, the first valve port 301 is connected to the first oil port 1031, and the second valve port 302 is connected to the second oil port 1032;

[0061] The energy storage component 4 has an input port 401 and an output port 402, wherein the input port 401 is connected to the fourth valve port 304, and the output port 402 is connected to the third valve port 303;

[0062] A second reversing valve 5, which is disposed between the input port 401 and the fourth valve port 304, and has a connected state and a disconnected state;

[0063] The third reversing valve 6 has the same structure as the second reversing valve 5 , and the third reversing valve 6 is disposed between the output port 402 and the third valve port 303 .

[0064] Based on the above technical solution, when the bridge 102 needs to be lifted, the first reversing valve 3 switches to the third state, the second reversing valve 5 switches to the disconnected state, and the third reversing valve 6 switches to the connected state. The oil of the hydraulic pump station 2 flows from the oil outlet 201 through the third valve port 303, the fourth valve port 304, and the first oil port 1031 in sequence and enters the piston rod-free side of the trestle cylinder 103. The oil on the piston rod side of the trestle cylinder 103 flows from the second oil port 1032 through the second valve port 302, the fourth valve port 304, and the oil inlet 202 in sequence and returns to the hydraulic pump station 2. The oil of the energy storage component 4 flows from the output port 402 through the third reversing valve 6 and merges with the oil flowing out of the oil outlet 201, and flows together to the piston rod-free side of the trestle cylinder 103, so as to push the trestle cylinder 103 to lift the bridge 1 02; When the bridge frame 102 needs to be lowered, the first reversing valve 3 switches to the first state, the second reversing valve 5 switches to the connected state, and the third reversing valve 6 switches to the disconnected state. The oil of the hydraulic pump station 2 flows from the oil outlet 201 through the third valve port 303, the second valve port 302, and the second oil port 1032 in sequence and then enters the piston rod side of the trestle cylinder 103. Part of the oil in the piston rod-free side of the trestle cylinder 103 flows through the first valve port 301, the fourth valve port 304, and the oil inlet 202 in sequence and then returns to the hydraulic pump station 2. The remaining part of the oil flows from the piston rod-free side of the trestle cylinder 103 through the first valve port 301, the fourth valve port 304, the second reversing valve 5, and the input port 401 in sequence and then enters the energy storage assembly 4 for storage, so as to assist in lifting the bridge frame 102 next time.

[0065] Preferably, if Figure 5 As shown, the boarding trestle energy compensation control system also includes a pressure stabilizing valve group 7, the pressure stabilizing valve group 7 includes a pressure stabilizing reversing valve 701, the pressure stabilizing reversing valve 701 has a fifth valve port 7011, a sixth valve port 7012, a seventh valve port 7013 and an eighth valve port 7014, and the pressure stabilizing reversing valve 701 has a fourth state, a fifth state, and a sixth state;

[0066] When the pressure-stabilizing reversing valve 701 is in the fourth state, the fifth valve port 7011 is connected to the seventh valve port 7013, the sixth valve port 7012 is connected to the eighth valve port 7014, a first check valve 7015 is provided between the fifth valve port 7011 and the seventh valve port 7013, the liquid flow direction of the first check valve 7015 is from the seventh valve port 7013 to the fifth valve port 7011, and a throttle valve 7019 is provided between the sixth valve port 7012 and the eighth valve port 7014;

[0067] When the pressure-stabilizing reversing valve 701 is in the fifth state, the fifth valve port 7011 is connected to the seventh valve port 7013, the sixth valve port 7012 is connected to the eighth valve port 7014, a second one-way valve 7016 is provided between the fifth valve port 7011 and the seventh valve port 7013, the liquid flow direction of the second one-way valve 7016 is from the seventh valve port 7013 to the fifth valve port 7011, a third one-way valve 7017 is provided between the sixth valve port 7012 and the eighth valve port 7014, the liquid flow direction of the third one-way valve 7017 is from the eighth valve port 7014 to the sixth valve port 7012;

[0068] When the pressure-stabilizing reversing valve 701 is in the sixth state, the fifth valve port 7011 is connected to the seventh valve port 7013, the sixth valve port 7012 is connected to the eighth valve port 7014, a throttle valve 7019 is provided between the fifth valve port 7011 and the seventh valve port 7013, a fourth check valve 7018 is provided between the sixth valve port 7012 and the eighth valve port 7014, and the liquid flow direction of the fourth check valve 7018 is from the eighth valve port 7014 to the sixth valve port 7012;

[0069] The seventh valve port 7013 is communicated with the first valve port 301 , the eighth valve port 7014 is communicated with the second valve port 302 , the fifth valve port 7011 is communicated with the first oil port 1031 , and the sixth valve port 7012 is communicated with the second oil port 1032 .

[0070] Based on the above technical solution, when the bridge 102 needs to be lifted, the pressure-stabilizing reversing valve 701 switches to the fifth state, and the oil entering the non-piston rod side of the trestle oil cylinder 103 flows from the seventh valve port 7013 through the first one-way valve 7015 to the fifth valve port 7011, and the oil flowing out of the piston rod side of the trestle oil cylinder 103 flows from the sixth valve port 7012 through the throttle valve 7019 to the eighth valve port 7014; when the bridge 102 needs to be stationary relative to the base 101, the pressure-stabilizing reversing valve 701 switches to the fifth state. Switching to the sixth state, the second one-way valve 7016 and the third one-way valve 7017 prevent the oil in the trestle cylinder 103 from flowing out from the pressure-stabilizing reversing valve 701; when the bridge frame 102 needs to be lowered, the oil entering the piston rod side of the trestle cylinder 103 flows from the eighth valve port 7014 through the fourth one-way valve 7018 to the sixth valve port 7012, and the oil flowing out from the piston rod-free side of the trestle cylinder 103 flows from the fifth valve port 7011 through the throttle valve 7019 to the seventh valve port 7013. The first one-way valve 7015, the second one-way valve 7016, the third one-way valve 7017 and the fourth one-way valve 7018 are used to prevent the oil from flowing back. The throttle valve 7019 is set to control the flow of the oil and slow down the speed of lifting and lowering the bridge 102. The compensation for the heave, roll and pitch movement of the ship is more stable to avoid excessive movement of the bridge 102, reduce the probability of damage to the bridge 102 and ensure the safety of the transfer of personnel and materials at sea.

[0071] More preferably, the fifth valve port 7011 is connected to the first oil port 1031 via the first pipeline 8, the sixth valve port 7012 is connected to the second oil port 1032 via the second pipeline 9, a first relief valve 10 and a second relief valve 11 are connected in parallel between the first pipeline 8 and the second pipeline 9, and the liquid flow directions of the first relief valve 10 and the second relief valve 11 are opposite. The first relief valve 10 and the second relief valve 11 can prevent the pressure difference between the first pipeline 8 and the second pipeline 9 from being too large, causing the piston of the trestle oil cylinder 103 to move too fast, which is easy to cause damage.

[0072] More preferably, if Figure 6 As shown, the energy storage assembly 4 includes an energy storage unit 403, the energy storage unit 403 has an energy storage port 4031, the energy storage port 4031 is connected to the second reversing valve 5, a fifth one-way valve 404 is arranged between the energy storage port 4031 and the second reversing valve 5, the liquid flow direction of the fifth one-way valve 404 is from the second reversing valve 5 to the energy storage port 4031, the energy storage port 4031 is connected to the third reversing valve 6, a sixth one-way valve 405 is arranged between the energy storage port 4031 and the third reversing valve 6, and the liquid flow direction of the sixth one-way valve 405 is from the energy storage port 4031 to the third reversing valve 6. The fifth one-way valve 404 and the sixth one-way valve 405 can limit the pipeline for the oil of the energy storage unit 403 to flow in and out, so as to avoid the problem of wrong oil flow direction, which affects the normal operation of the trestle oil cylinder 103.

[0073] More preferably, the first pipeline 8 is connected to a first pressure gauge 12, the second pipeline 9 is connected to a second pressure gauge 13, and the energy storage port 4031 is connected to a third pressure gauge 14. The first pressure gauge 12, the second pressure gauge 13, and the third pressure gauge 14 are provided to facilitate the staff to observe the oil pressure at each position in real time, and if the oil pressure is abnormal, it can be repaired and adjusted in time.

[0074] More preferably, if Figure 1 As shown, the boarding trestle energy compensation control system also includes a fourth reversing valve 15, a control component 17, a first pressure sensor 18 is connected to the first pipeline 8, a second pressure sensor 19 is connected to the second pipeline 9, and a third pressure sensor 20 is connected to the energy storage port 4031. The fourth reversing valve 15 has the same structure as the second reversing valve 5, and a third pipeline 16 is connected between the fourth valve port 304 and the oil inlet 202. The fourth reversing valve 15 is located on the third pipeline 16 and is located on the downstream side of the oil inlet end of the second reversing valve 5. The control component 17 is electrically connected to the first reversing valve 3, the second reversing valve 5, the third reversing valve 6, the first pressure sensor 18, the second pressure sensor 19, and the third pressure sensor 20.

[0075] Based on the above technical solution, when the energy storage unit 403 is independently stored, the first reversing valve 3 is switched to the second state, the second reversing valve 5 is switched to the connected state, the third reversing valve 6 is switched to the disconnected state, and the fourth reversing valve 15 is switched to the disconnected state. The oil of the hydraulic pump station 2 flows out from the oil outlet 201, flows through the third valve port 303, the fourth valve port 304, the second reversing valve 5, and the fifth check valve 404, and then flows into the energy storage unit 403 for independent energy storage. When the trestle oil cylinder 103 is in When in the non-working state, it is necessary to release the oil from the energy storage unit 403, switch the first reversing valve 3 to the second state, switch the second reversing valve 5 to the disconnected state, switch the third reversing valve 6 to the connected state, and switch the fourth reversing valve 15 to the connected state. The oil in the energy storage unit 403 flows out from the energy storage port 4031, flows through the sixth one-way valve 405, the third reversing valve 6, the third valve port 303, the fourth valve port 304, the fourth reversing valve 15, and the oil inlet 202, and then flows back to the hydraulic pump station 2.

[0076] More preferably, the value of the first pressure gauge 12 is recorded as P1, the value of the second pressure gauge 13 is recorded as P2, and the value of the third pressure gauge 14 is recorded as P3.

[0077] The control component 17 is configured to:

[0078] When the bridge 102 needs to be lifted, the first reversing valve 3 is switched to the third state, the second reversing valve 5 is switched to the disconnected state, the third reversing valve 6 is switched to the connected state, and the fourth reversing valve 15 is switched to the connected state. When P3<P1, the third reversing valve 6 is switched to the disconnected state.

[0079] When the bridge 102 needs to be lowered, the first reversing valve 3 is switched to the first state, the second reversing valve 5 is switched to the connected state, the third reversing valve 6 is switched to the disconnected state, and the fourth reversing valve 15 is switched to the disconnected state. When P3>P1, the second reversing valve 5 is switched to the disconnected state, and the fourth reversing valve 15 is switched to the connected state.

[0080] In a preferred embodiment, the parameters, k1, and k2 are all set to coefficients greater than 1;

[0081] During the lifting process of the bridge 102, when P3<k1P1, the third reversing valve 6 is switched to the disconnected state; at this time, it means that the oil pressure of the energy storage unit 403 is insufficient to provide hydraulic power, and the hydraulic pump station 2 is switched to supply oil alone to avoid the phenomenon that the hydraulic pump station 2 supplies oil to the non-piston side of the trestle oil cylinder 103 and the energy storage unit 403 at the same time, which may easily lead to insufficient oil supply to the non-piston side of the trestle oil cylinder 103 and insufficient lifting of the bridge 102;

[0082] During the lowering process of the bridge 102, when P1<k2P3, the second reversing valve 5 switches to the disconnected state and the fourth reversing valve 15 switches to the connected state; this indicates that the gravitational potential energy of the bridge 102 is insufficient to continue to store energy in the energy storage unit 403, so as to avoid the problem of insufficient lowering of the bridge 102.

[0083] In a preferred embodiment, k1 and k2 are in the range of 1.2 to 1.5. When k1 and k2 are less than 1.2, the above situation is likely to occur, and when k1 and k2 are greater than 1.5, the gravitational potential energy of the bridge 102 is not fully utilized, and the energy consumption of the hydraulic pump station 2 is large.

[0084] Preferably, if Figure 7 As shown, the hydraulic pump station 2 includes an oil tank 203 and a booster drive 204 . The oil tank 203 is in communication with the oil outlet 201 , and the booster drive 204 is disposed between the oil tank 203 and the oil outlet 201 .

[0085] Specifically, the boost drive 204 is a drive motor.

[0086] During the lifting process of the bridge frame 102, the booster drive 204 boosts the oil output from the oil tank 203 and then outputs it;

[0087] During the lowering process of the bridge 102 , the boosting amount of the oil output from the oil tank 203 by the boosting drive 204 is reduced.

[0088] Specifically, the oil inlet 202 is connected to the oil tank 203, and the oil tank 203 is provided with a thermometer, a liquid level gauge, an air filter, and a

[0089] In summary, the embodiment of the present invention provides a boarding trestle energy compensation control system, when the bridge frame 102 needs to be lifted, the first reversing valve 3 switches to the third state, the second reversing valve 5 switches to the disconnected state, and the third reversing valve 6 switches to the connected state, and the oil of the hydraulic pump station 2 flows from the oil outlet 201 through the third valve port 303, the fourth valve port 304, and the first oil port 1031 in sequence to enter the piston rod-free side of the trestle cylinder 103, the oil on the piston rod side of the trestle cylinder 103 flows from the second oil port 1032 through the second valve port 302, the fourth valve port 304, and the oil inlet 202 in sequence and then returns to the hydraulic pump station 2, the oil of the energy storage component 4 flows from the output port 402 through the third reversing valve 6 and merges with the oil flowing out of the oil outlet 201, and flows together to the piston rod-free side of the trestle cylinder 103 to push the trestle oil Cylinder 103 lifts bridge frame 102; when bridge frame 102 needs to be lowered, the first reversing valve 3 switches to the first state, the second reversing valve 5 switches to the connected state, and the third reversing valve 6 switches to the disconnected state. The oil of hydraulic pump station 2 flows from the oil outlet 201 through the third valve port 303, the second valve port 302, and the second oil port 1032 in sequence and enters the piston rod side of trestle cylinder 103. Part of the oil in the piston rod-free side of trestle cylinder 103 flows through the first valve port 301, the fourth valve port 304, and the oil inlet 202 in sequence and returns to the hydraulic pump station 2. The remaining part of the oil flows from the piston rod-free side of trestle cylinder 103 through the first valve port 301, the fourth valve port 304, the second reversing valve 5, and the input port 401 in sequence and enters the energy storage assembly 4 for storage, so as to assist in lifting the bridge frame 102 next time.

[0090] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A boarding trestle energy compensation control system, the boarding trestle (1) comprising a base (101), a bridge frame (102) and a trestle cylinder (103), one end of the bridge frame (102) is hinged to the base (101), the trestle cylinder (103) is hinged to the base (101), the power output end of the trestle cylinder (103) is hinged to the bridge frame (102), the trestle cylinder (103) is located below the bridge frame (102), the trestle cylinder (103) is used to drive the bridge frame (102) to rotate, the trestle cylinder (103) has a first oil port (1031) and a second oil port (1032), the first oil port (1031) is located on the side without a piston rod, and the second oil port (1032) is located on the side of the piston rod, characterized in that include: A hydraulic pump station (2), wherein the hydraulic pump station (2) has an oil outlet (201) and an oil inlet (202); A first reversing valve (3), wherein the first reversing valve (3) has a first valve port (301), a second valve port (302), a third valve port (303) and a fourth valve port (304); the first reversing valve (3) has a first state, a second state and a third state; when the first reversing valve (3) is in the first state, the first valve port (301) is communicated with the fourth valve port (304), and the second valve port (302) is communicated with the third valve port (303); when the first reversing valve (3) is in the second state, the third valve port (303) is communicated with the fourth valve port (304); The first valve port (301) is connected to the second valve port (302), and the first valve port (301) is not connected to the second valve port (302); when the first reversing valve (3) is in the third state, the first valve port (301) is connected to the third valve port (303), and the second valve port (302) is connected to the fourth valve port (304); the oil outlet (201) is connected to the third valve port (303), the oil inlet (202) is connected to the fourth valve port (304), the first valve port (301) is connected to the first oil port (1031), and the second valve port (302) is connected to the second oil port (1032); An energy storage component (4), the energy storage component (4) having an input port (401) and an output port (402), the input port (401) being in communication with the fourth valve port (304), and the output port (402) being in communication with the third valve port (303); a second reversing valve (5), the second reversing valve (5) being arranged between the input port (401) and the fourth valve port (304), the second reversing valve (5) having a connected state and a disconnected state; A third reversing valve (6), the third reversing valve (6) having the same structure as the second reversing valve (5), and the third reversing valve (6) being arranged between the output port (402) and the third valve port (303).

2. The boarding trestle energy compensation control system according to claim 1, characterized in that: The device also comprises a pressure-stabilizing valve group (7), wherein the pressure-stabilizing valve group (7) comprises a pressure-stabilizing reversing valve (701), wherein the pressure-stabilizing reversing valve (701) has a fifth valve port (7011), a sixth valve port (7012), a seventh valve port (7013) and an eighth valve port (7014), and wherein the pressure-stabilizing reversing valve (701) has a fourth state, a fifth state and a sixth state; When the pressure-stabilizing reversing valve (701) is in the fourth state, the fifth valve port (7011) is communicated with the seventh valve port (7013), the sixth valve port (7012) is communicated with the eighth valve port (7014), a first one-way valve (7015) is provided between the fifth valve port (7011) and the seventh valve port (7013), the liquid flow direction of the first one-way valve (7015) is from the seventh valve port (7013) to the fifth valve port (7011), and a throttle valve (7019) is provided between the sixth valve port (7012) and the eighth valve port (7014); When the pressure-stabilizing reversing valve (701) is in the fifth state, the fifth valve port (7011) is communicated with the seventh valve port (7013), the sixth valve port (7012) is communicated with the eighth valve port (7014), a second one-way valve (7016) is provided between the fifth valve port (7011) and the seventh valve port (7013), the liquid flow direction of the second one-way valve (7016) is from the seventh valve port (7013) to the fifth valve port (7011), a third one-way valve (7017) is provided between the sixth valve port (7012) and the eighth valve port (7014), the liquid flow direction of the third one-way valve (7017) is from the eighth valve port (7014) to the sixth valve port (7012); When the pressure-stabilizing reversing valve (701) is in the sixth state, the fifth valve port (7011) is communicated with the seventh valve port (7013), the sixth valve port (7012) is communicated with the eighth valve port (7014), a throttle valve (7019) is provided between the fifth valve port (7011) and the seventh valve port (7013), a fourth check valve (7018) is provided between the sixth valve port (7012) and the eighth valve port (7014), and the liquid flow direction of the fourth check valve (7018) is from the eighth valve port (7014) to the sixth valve port (7012); The seventh valve port (7013) is connected to the first valve port (301), the eighth valve port (7014) is connected to the second valve port (302), the fifth valve port (7011) is connected to the first oil port (1031), and the sixth valve port (7012) is connected to the second oil port (1032).

3. The boarding trestle energy compensation control system according to claim 2 is characterized in that: The fifth valve port (7011) is connected to the first oil port (1031) via a first pipeline (8); the sixth valve port (7012) is connected to the second oil port (1032) via a second pipeline (9); a first overflow valve (10) and a second overflow valve (11) are connected in parallel between the first pipeline (8) and the second pipeline (9); and the liquid flow directions of the first overflow valve (10) and the second overflow valve (11) are opposite.

4. The boarding trestle energy compensation control system according to claim 3, characterized in that: The energy storage assembly (4) comprises an energy storage unit (403), wherein the energy storage unit (403) has an energy storage port (4031), wherein the energy storage port (4031) is communicated with the second reversing valve (5), wherein a fifth one-way valve (404) is arranged between the energy storage port (4031) and the second reversing valve (5), wherein a liquid flow direction of the fifth one-way valve (404) is from the second reversing valve (5) to the energy storage port (4031), wherein the energy storage port (4031) is communicated with the third reversing valve (6), wherein a sixth one-way valve (405) is arranged between the energy storage port (4031) and the third reversing valve (6), wherein a liquid flow direction of the sixth one-way valve (405) is from the energy storage port (4031) to the third reversing valve (6).

5. The boarding trestle energy compensation control system according to claim 4, characterized in that: The first pipeline (8) is connected to a first pressure gauge (12), the second pipeline (9) is connected to a second pressure gauge (13), and the energy storage port (4031) is connected to a third pressure gauge (14).

6. The boarding bridge energy compensation control system according to claim 4, characterized in that: The invention also comprises a fourth reversing valve (15) and a control component (17); the first pipeline (8) is connected to a first pressure sensor (18); the second pipeline (9) is connected to a second pressure sensor (19); the energy storage port (4031) is connected to a third pressure sensor (20); the fourth reversing valve (15) has the same structure as the second reversing valve (5); a third pipeline (16) is connected between the fourth valve port (304) and the oil inlet (202); the fourth reversing valve (15) is located on the third pipeline (16) and is located on the downstream side of the oil inlet end of the second reversing valve (5); the control component (17) is electrically connected to the first reversing valve (3), the second reversing valve (5), the third reversing valve (6), the first pressure sensor (18), the second pressure sensor (19), and the third pressure sensor (20).

7. The boarding bridge energy compensation control system according to claim 4, characterized in that: The value of the first pressure gauge (12) is recorded as P1, the value of the second pressure gauge (13) is recorded as P2, and the value of the third pressure gauge (14) is recorded as P3. The control component (17) is configured to: When the bridge (102) needs to be lifted, the first reversing valve (3) is switched to the third state, the second reversing valve (5) is switched to the disconnected state, the third reversing valve (6) is switched to the connected state, and the fourth reversing valve (15) is switched to the connected state; when P3<P1, the third reversing valve (6) is switched to the disconnected state; When the bridge (102) needs to be lowered, the first reversing valve (3) is switched to the first state, the second reversing valve (5) is switched to the connected state, the third reversing valve (6) is switched to the disconnected state, and the fourth reversing valve (15) is switched to the disconnected state. When P1<P3, the second reversing valve (5) is switched to the disconnected state, and the fourth reversing valve (15) is switched to the connected state.

8. The boarding trestle energy compensation control system according to claim 1, characterized in that: The hydraulic pump station (2) comprises an oil tank (203) and a booster drive component (204); the oil tank (203) is in communication with the oil outlet (201); and the booster drive component (204) is arranged between the oil tank (203) and the oil outlet (201).

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