A continuous boost system

Abstract

The present invention relates to the field of continuous supercharging technology, and specifically discloses a continuous supercharging system, including a working oil cylinder, a control device, and a first reversing mechanism, a first supercharging mechanism, a second supercharging mechanism, a second reversing mechanism and a monitoring mechanism, which are electrically connected to the control device respectively; the input end of the first reversing mechanism and the input end of the second reversing mechanism are respectively used to connect to a pressure source, and the output end of the first reversing mechanism is connected to the input end of the working oil cylinder or the low-pressure end of the first supercharging mechanism or the low-pressure end of the second supercharging mechanism; the high-pressure output end of the first supercharging mechanism and the high-pressure output end of the second supercharging mechanism are respectively connected to the input end of the working oil cylinder, and the output end of the second reversing mechanism is connected to the high-pressure input end of the first supercharging mechanism or the high-pressure input end of the second supercharging mechanism; the continuous supercharging system disclosed in the present application can adjust the working states of the two reversing mechanisms and the two supercharging mechanisms according to the information fed back by the monitoring mechanism, so as to achieve the purpose of continuous and stable supercharging.

Description

Technical Field

[0001] The invention relates to the technical field of continuous supercharging, and in particular to a continuous supercharging system. Background Art

[0002] In the field of hydraulic machinery, in order to reduce the size of the cylinder and the workbench, and thus reduce the overall equipment volume to save costs, more and more applications choose to increase the working pressure of the cylinder; however, as the tonnage of the equipment increases, the size of the cylinder also increases, which puts higher requirements on the output capacity of the booster cylinder; in some cases, a single booster cylinder cannot simultaneously meet the sufficient stroke required by the working cylinder to reach the preset working pressure. Therefore, the industry usually increases the number of booster cylinders or adopts a reciprocating booster system to meet the demand.

[0003] The method of increasing the number of boost cylinders requires more material and installation space, complicates the oil system, and increases production and installation costs. Especially when the demand is huge, the cost of configuring the size and number of boost cylinders according to traditional methods will become extremely high.

[0004] As for the reciprocating booster system, it has the problem of unstable pressure output; when the double piston rod of the traditional reciprocating booster cylinder switches from one end to the other end, the cylinder needs to return, and it takes a process to establish pressure output at the other end. When the one-way valve at the high-pressure output end is closed, there will be a certain amount of leakage. These factors inevitably lead to pressure fluctuations, usually between 10 and 20MPa. The higher the pressure, the smaller the fluctuation is. When the pressure is low, the fluctuation is larger. When the product process is more sensitive to pressure changes, this pressure fluctuation will undoubtedly affect the quality and yield of the product. In addition, the repeated drop in pressure will also affect the cycle and efficiency of the entire pressurization process. Furthermore, the high-pressure end volume utilization rate of the traditional reciprocating booster system is low. Since the booster cylinder itself lacks displacement detection, it mainly relies on time to estimate the displacement of the piston rod. It often needs to switch to the other end for boosting before reaching the specified position, resulting in a low actual output volume of the booster cylinder.

[0005] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a continuous pressurization system which can achieve continuous pressurization and has the advantages of stable and reliable pressurization process.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A continuous boosting system comprises a working oil cylinder, a control device, and a first reversing mechanism, a first boosting mechanism, a second boosting mechanism, a second reversing mechanism and a monitoring mechanism electrically connected to the control device respectively, wherein the input end of the first reversing mechanism and the input end of the second reversing mechanism are respectively used to connect to a pressure source, and the output end of the first reversing mechanism is connected to the input end of the working oil cylinder or to the low-pressure end of the first boosting mechanism or to the low-pressure end of the second boosting mechanism; the high-pressure output end of the first boosting mechanism and the high-pressure output end of the second boosting mechanism are respectively connected to the input end of the working oil cylinder, and the output end of the second reversing mechanism is connected to the high-pressure input end of the first boosting mechanism or to the high-pressure input end of the second boosting mechanism; the monitoring mechanism is used to obtain real-time status information of the working oil cylinder, the first boosting mechanism and the second boosting mechanism.

[0009] In the continuous boosting system, the monitoring mechanism includes a first pressure sensor, a second pressure sensor and a third pressure sensor which are electrically connected to the control device respectively. The first pressure sensor is used to obtain the real-time internal pressure of the working cylinder, the second pressure sensor is used to obtain the real-time working pressure of the first boosting mechanism, and the third pressure sensor is used to obtain the real-time working pressure of the second boosting mechanism.

[0010] In the continuous boosting system, the structures of the first boosting mechanism and the second boosting mechanism are consistent; the first boosting mechanism includes a plurality of first boosting cylinders and a plurality of first displacement sensors respectively electrically connected to the control device, and each first boosting cylinder is connected to a corresponding first displacement sensor; the low-pressure end of any first boosting cylinder is connected to the output end of the first reversing mechanism, and the low-pressure ends of adjacent first boosting cylinders are connected to each other; the high-pressure output end of any first boosting cylinder is connected to the input end of the working oil cylinder, and the high-pressure input end of any first boosting cylinder is connected to the output end of the second reversing mechanism, and the high-pressure ends of adjacent first boosting cylinders are connected to each other.

[0011] The continuous boosting system also includes a first one-way valve and a second one-way valve. The high-pressure output end of the first boosting mechanism is connected to the input end of the working cylinder through the first one-way valve, and the high-pressure output end of the second boosting mechanism is connected to the input end of the working cylinder through the second one-way valve.

[0012] In the continuous boosting system, the first reversing mechanism includes a first reversing valve, a second reversing valve, a third reversing valve, a sixth reversing valve, a first hydraulically controlled one-way valve and a second hydraulically controlled one-way valve, which are electrically connected to the control device respectively, and the pressure source includes a first oil pump and a second oil pump; the input end of the first reversing valve and the input end of the second reversing valve are respectively connected to the first oil pump, and the input end of the sixth reversing valve and the input end of the third reversing valve are respectively connected to the second oil pump; the output end of the first reversing valve and the output end of the sixth reversing valve are respectively connected to the input end of the working cylinder, the output end of the second reversing valve is connected to the low-pressure end of the first boosting mechanism through the first hydraulically controlled one-way valve, and the output end of the third reversing valve is connected to the low-pressure end of the second boosting mechanism through the second hydraulically controlled one-way valve.

[0013] In the continuous pressurization system, a third one-way valve is provided between the first reversing valve and the input end of the working oil cylinder, and the third one-way valve is used to prevent the oil in the working oil cylinder from flowing back to the first reversing valve.

[0014] In the continuous boosting system, the second reversing mechanism includes a fourth reversing valve and a fifth reversing valve, the input end of the fourth reversing valve is used to connect to the first oil pump, and the input end of the fifth reversing valve is used to connect to the second oil pump; the output end of the fourth reversing valve is connected to the high-pressure input end of the first boosting mechanism, and the output end of the fifth reversing valve is connected to the high-pressure input end of the second boosting mechanism.

[0015] The continuous boosting system also includes a fourth one-way valve and a fifth one-way valve. The fourth one-way valve is arranged between the fourth reversing valve and the high-pressure input end of the first boosting mechanism, and the fifth one-way valve is arranged between the fifth reversing valve and the high-pressure input end of the second boosting mechanism.

[0016] In the continuous pressurization system, the first reversing valve and the sixth reversing valve are connected to the rod chamber of the working cylinder through a supporting function valve group.

[0017] In the continuous pressurization system, the working cylinder is also connected to a third hydraulically controlled one-way valve, and the third hydraulically controlled one-way valve is electrically connected to the control device.

[0018] Beneficial effects:

[0019] The present invention provides a continuous boosting system, which can adjust the working states of the first reversing mechanism and the second reversing mechanism according to the real-time pressure information fed back by the monitoring mechanism, so as to adjust the working states of the first boosting mechanism and the second boosting mechanism, that is, adjust the connection relationship between the oil pump and the first boosting mechanism and the second boosting mechanism, while ensuring the stable increase of the pressure of the working oil cylinder, the stable pressure increase and stable oil return of the first boosting mechanism and the second boosting mechanism can be achieved, that is, the purpose of continuous multiple boosting can be achieved, and it has the advantages of reliable and stable boosting process and high boosting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A system structure diagram of the continuous pressurization system provided by the present invention;

[0021] Explanation of main component symbols: 1-working cylinder, 11-third hydraulically controlled one-way valve, 12-support function valve group, 21-first reversing valve, 22-second reversing valve, 23-third reversing valve, 24-first hydraulically controlled one-way valve, 25-second hydraulically controlled one-way valve, 26-sixth reversing valve, 31-first boosting cylinder, 32-first displacement sensor, 41-second boosting cylinder, 42-second displacement sensor, 51-fourth reversing valve, 52-fifth reversing valve, 61-first pressure sensor, 62-second pressure sensor, 63-third pressure sensor, 71-first one-way valve, 72-second one-way valve, 73-third one-way valve, 74-fourth one-way valve, 75-fifth one-way valve, 81-first oil pump, 82-second oil pump. DETAILED DESCRIPTION

[0022] The present invention provides a continuous pressurization system. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples.

[0023] In the description of the present invention, it should be understood that the terms "front", "rear", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and should not be understood as limitations on the present invention; in addition, the terms "installation", "connection", etc. should be understood in a broad sense, and those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0024] See also Figure 1The present invention provides a continuous boosting system, comprising a working oil cylinder 1, a control device, and a first reversing mechanism, a first boosting mechanism, a second boosting mechanism, a second reversing mechanism and a monitoring mechanism electrically connected to the control device respectively, wherein the input end of the first reversing mechanism and the input end of the second reversing mechanism are respectively used to connect to a pressure source, and the output end of the first reversing mechanism is connected to the input end of the working oil cylinder 1 or to the low-pressure end of the first boosting mechanism or to the low-pressure end of the second boosting mechanism; the high-pressure output end of the first boosting mechanism and the high-pressure output end of the second boosting mechanism are respectively connected to the input end of the working oil cylinder 1, and the output end of the second reversing mechanism is connected to the high-pressure input end of the first boosting mechanism or to the high-pressure input end of the second boosting mechanism; the monitoring mechanism is used to obtain real-time status information of the working oil cylinder 1, the first boosting mechanism and the second boosting mechanism.

[0025] The present application discloses a continuous boosting system, which can adjust the working states of the first reversing mechanism and the second reversing mechanism according to the real-time pressure information fed back by the monitoring mechanism, so as to adjust the working states of the first boosting mechanism and the second boosting mechanism, that is, adjust the connection relationship between the oil pump and the first boosting mechanism and the second boosting mechanism, while ensuring the stable increase of the pressure of the working oil cylinder 1, the stable pressure increase and stable oil return of the first boosting mechanism and the second boosting mechanism can be achieved, that is, the purpose of continuous multiple boosting can be achieved, and it has the advantages of reliable and stable boosting process and high boosting efficiency.

[0026] In this embodiment, the control device may be a PLC controller, which is a prior art and will not be described in detail here.

[0027] Furthermore, the monitoring mechanism includes a first pressure sensor 61, a second pressure sensor 62 and a third pressure sensor 63, which are electrically connected to the control device respectively. The first pressure sensor 61 is used to obtain the real-time internal pressure of the working cylinder 1, the second pressure sensor 62 is used to obtain the real-time working pressure of the first boosting mechanism, and the third pressure sensor 63 is used to obtain the real-time working pressure of the second boosting mechanism.

[0028] Furthermore, the structures of the first boosting mechanism and the second boosting mechanism are consistent; the first boosting mechanism includes a plurality of first boosting cylinders 31 and a plurality of first displacement sensors 32 respectively electrically connected to the control device, and each first boosting cylinder 31 is connected to a corresponding first displacement sensor 32; the low-pressure end of any first boosting cylinder 31 is connected to the output end of the first reversing mechanism, and the low-pressure ends of adjacent first boosting cylinders 31 are connected to each other; the high-pressure output end of any first boosting cylinder 31 is connected to the input end of the working oil cylinder 1, and the high-pressure input end of any first boosting cylinder 31 is connected to the output end of the second reversing mechanism, and the high-pressure ends of adjacent first boosting cylinders 31 are connected to each other.

[0029] In this embodiment, the second boosting mechanism includes a plurality of second boosting cylinders 41 and a plurality of second displacement sensors 42 respectively electrically connected to the control device, and each second boosting cylinder 41 is connected to a corresponding second displacement sensor 42; the low-pressure end of any second boosting cylinder 41 is connected to the output end of the second reversing mechanism, and the low-pressure ends of adjacent second boosting cylinders 41 are connected to each other; the high-pressure output end of any second boosting cylinder 41 is connected to the input end of the working oil cylinder 1, and the high-pressure input end of any second boosting cylinder 41 is connected to the output end of the second reversing mechanism, and the high-pressure ends of adjacent second boosting cylinders 41 are connected to each other.

[0030] In this embodiment, the first displacement sensor 32 is used to obtain the real-time stroke displacement of the first boost cylinder 31, and the second displacement sensor 42 is used to obtain the real-time stroke displacement of the second boost cylinder 41; the first boost cylinder 31 and the second boost cylinder 41 can be a piston rod boosting working mode or a rod chamber boosting working mode, and the first displacement sensor 32 and the second displacement sensor 42 can be built-in or external.

[0031] In this embodiment, the first boosting mechanism includes at least two first boosting cylinders 31, and the second boosting mechanism includes at least two second boosting cylinders 41; at least two boosting cylinders are provided as a redundant design to increase the reliability of the system; when any boosting cylinder fails, the other boosting cylinders can continue to work to ensure the continuous operation of the entire system; in addition, multiple boosting cylinders can share the workload, improve efficiency and reduce the wear of a single boosting cylinder, thereby extending the service life of the boosting system.

[0032] Furthermore, the continuous boosting system also includes a first one-way valve 71 and a second one-way valve 72, the high-pressure output end of the first boosting mechanism is connected to the input end of the working cylinder 1 through the first one-way valve 71, and the high-pressure output end of the second boosting mechanism is connected to the input end of the working cylinder 1 through the second one-way valve 72.

[0033] In this example, see Figure 1The high-pressure output end of the first boosting cylinder 31 located at the front side is connected to the input end of the working cylinder 1 through the first one-way valve 71, and the high-pressure output end of the second boosting cylinder 41 located at the front side is connected to the input end of the working cylinder 1 through the second one-way valve 72; by setting the first one-way valve 71 and the second one-way valve 72, the first one-way valve 71 is used to prevent the oil from flowing back from the working cylinder 1 to the first boosting mechanism, and the second one-way valve 72 is used to prevent the oil from flowing back from the working cylinder 1 to the second boosting mechanism; it can ensure that the high-pressure chambers of the two boosting mechanisms work independently, avoiding the series connection between the two boosting mechanisms; for the high-pressure chamber of each boosting mechanism, the pressure can be increased and maintained independently without mutual interference, ensuring the efficient and stable operation of the entire system; and each boosting mechanism can respond to load changes independently, optimize the energy utilization efficiency, and improve the reliability and safety of the system during operation.

[0034] Further, the first reversing mechanism includes a first reversing valve 21, a second reversing valve 22, a third reversing valve 23, a sixth reversing valve 26, a first hydraulically controlled one-way valve 24 and a second hydraulically controlled one-way valve 25, which are electrically connected to the control device respectively, and the pressure source includes a first oil pump 81 and a second oil pump 82; the input end of the first reversing valve 21 and the input end of the second reversing valve 22 are respectively connected to the first oil pump 81, and the input end of the sixth reversing valve 26 and the input end of the third reversing valve 23 are respectively connected to the second oil pump 82; the output end of the first reversing valve 21 and the output end of the sixth reversing valve 26 are respectively connected to the input end of the working cylinder 1, the output end of the second reversing valve 22 is connected to the low-pressure end of the first boosting mechanism through the first hydraulically controlled one-way valve 24, and the output end of the third reversing valve 23 is connected to the low-pressure end of the second boosting mechanism through the second hydraulically controlled one-way valve 25.

[0035] In this embodiment, the first oil pump 81 and the second oil pump 82 may be a servo oil pump system or a pressure control system to achieve oil delivery.

[0036] In this embodiment, the first reversing valve 21, the second reversing valve 22, the third reversing valve 23 and the sixth reversing valve 26 can be two-position four-way solenoid valves or three-position four-way solenoid valves; the first reversing valve 21 is used to realize low-pressure input and return action; the second reversing valve 22 and the third reversing valve 23 are used to realize the low-pressure end input of the boosting mechanism, and the first hydraulically controlled one-way valve 24 and the second hydraulically controlled one-way valve 25 are used to ensure that when another boosting mechanism is in operation, the pressure input of the boosting mechanism connected to the first hydraulically controlled one-way valve 24 or the second hydraulically controlled one-way valve 25 is not affected.

[0037] Furthermore, a third one-way valve 73 is provided between the first reversing valve 21 and the input end of the working cylinder 1 , and the third one-way valve 73 is used to prevent the oil in the working cylinder 1 from flowing back to the first reversing valve 21 .

[0038] In this embodiment, by providing the third one-way valve 73, the oil in the working cylinder 1 is effectively prevented from flowing back to the first reversing valve 21, thereby ensuring the unidirectional flow of the oil, thereby improving the stability and control accuracy of the system; in addition, avoiding oil backflow also helps to reduce energy loss and improve the working efficiency of the entire boosting system.

[0039] Furthermore, the second reversing mechanism includes a fourth reversing valve 51 and a fifth reversing valve 52, the input end of the fourth reversing valve 51 is used to connect to the first oil pump 81, and the input end of the fifth reversing valve 52 is used to connect to the second oil pump 82; the output end of the fourth reversing valve 51 is connected to the high-pressure input end of the first boosting mechanism, and the output end of the fifth reversing valve 52 is connected to the high-pressure input end of the second boosting mechanism.

[0040] In this embodiment, the fourth reversing valve 51 and the fifth reversing valve 52 can be a two-position four-way solenoid valve or a three-position four-way solenoid valve; the fourth reversing valve 51 and the fifth reversing valve 52 are used to realize the oil replenishment and return action of the high-pressure chamber of the boosting mechanism.

[0041] Furthermore, the continuous boosting system also includes a fourth one-way valve 74 and a fifth one-way valve 75. The fourth one-way valve 74 is arranged between the fourth reversing valve 51 and the high-pressure input end of the first boosting mechanism, and the fifth one-way valve 75 is arranged between the fifth reversing valve 52 and the high-pressure input end of the second boosting mechanism.

[0042] In this embodiment, the fourth one-way valve 74 and the fifth one-way valve 75 are used to isolate the high-pressure oil circuit and the low-pressure oil circuit; the fourth one-way valve 74 allows oil to flow from the oil pump to the high-pressure input end of the first boosting mechanism, but prevents reverse flow, while the fifth one-way valve 75 allows oil to flow from the oil pump to the high-pressure input end of the second boosting mechanism, and prevents reverse flow; by preventing the high-pressure oil in the high-pressure oil circuit from accidentally flowing into the low-pressure oil circuit, the low-pressure components in the boosting system can be protected from damage and the normal operation of the boosting system can be ensured.

[0043] Furthermore, the first reversing valve 21 and the sixth reversing valve 26 are connected to the rod chamber of the working cylinder 1 through the supporting function valve group 12, and the supporting function valve group 12 is electrically connected to the control device.

[0044] In this embodiment, the supporting function valve group 12 is an existing hydraulic system component, and its function is to ensure that the oil can flow smoothly to the oil rod chamber of the cylinder, and at the same time generate a certain pressure in the process of the oil flowing from the oil rod chamber to the first reversing valve 21 and / or the sixth reversing valve 26, thereby providing support for the working cylinder 1.

[0045] Furthermore, the working cylinder 1 is also connected to a third hydraulically controlled one-way valve 11, and the third hydraulically controlled one-way valve 11 is electrically connected to the control device.

[0046] In this embodiment, the third hydraulically controlled one-way valve 11 is used to ensure that the oil in the working cylinder 1 can stably flow back to the oil tank when the working cylinder 1 is unloaded and returns.

[0047] The continuous pressurization system disclosed in the present application, when actually working, follows the following steps to work:

[0048] 1. When the preset low-pressure state condition is met, the oil is directly supplied by the pressure source, and the oil enters the oil chamber of the working cylinder 1 through the first reversing valve 21 and the sixth reversing valve 26;

[0049] 2. When the first pressure sensor 61 feeds back that the real-time pressure information of the working cylinder 1 meets the preset low-pressure working maximum pressure, the control device controls and adjusts the working state of the first reversing mechanism, and controls the first boosting mechanism to start working;

[0050] 3. The control device first controls the first reversing valve 21 and the sixth reversing valve 26 to reset, and then controls the second reversing valve 22 to reverse. The oil output by the first oil pump 81 enters the low-pressure end of the first boosting mechanism, pushing the boosting cylinder. The high-pressure chamber of the first boosting mechanism outputs the pressurized oil, which enters the large chamber of the working cylinder 1 through the first one-way valve 71. The real-time pressure of the working cylinder 1 continues to rise, and the second pressure sensor 62 monitors the real-time output pressure of the high-pressure end of the first boosting cylinder 31 mechanism; due to the isolation of the second one-way valve 72, the output oil of the high-pressure end of the first boosting mechanism cannot enter the high-pressure end of the second boosting cylinder 41 mechanism;

[0051] 4. When the first displacement sensor 32 feeds back that the real-time displacement information of each boosting cylinder of the first boosting mechanism meets the preset first forward buffer condition, the control device controls the third reversing valve 23 to switch, and the oil output by the first oil pump 81 simultaneously enters the low-pressure end of the second boosting mechanism, that is, the pressurized oil is simultaneously delivered to the oil chamber of the working oil cylinder 1 through the output end of the first boosting mechanism and the output end of the second boosting mechanism, and the third pressure sensor 63 monitors the output pressure of the high-pressure end of the second boosting mechanism in real time;

[0052] 5. When the pressure output of the high-pressure end of the second boosting mechanism meets the preset second normal working condition and when the first displacement sensor 32 feeds back that the real-time displacement information of each boosting cylinder of the first boosting mechanism meets the preset first forward limit condition, the control device controls the second reversing valve 22 to reset, the fourth reversing valve 51 to reverse, and the oil output by the second oil pump 82 continues to supply oil to the low-pressure end of the boosting cylinder of the second boosting mechanism, while the oil output by the first oil pump 81 supplies oil to the high-pressure end of the boosting cylinder of the first boosting mechanism through the fourth reversing valve 51 and the fourth one-way valve 74, so that the boosting cylinder of the first boosting mechanism replenishes oil for the return stroke; when the boosting cylinders of the first boosting mechanism all return to the bottom, the control device controls the fourth reversing valve 51 to reset, and stops replenishing oil to the high-pressure end of the boosting cylinder of the first boosting mechanism. Due to the isolation effect of the fourth one-way valve 74, the oil at the high-pressure end of the first boosting mechanism will not flow back to the oil tank;

[0053] 6. Similarly, when the second displacement sensor 42 feeds back that the real-time displacement information of each boosting cylinder of the second boosting mechanism meets the preset first forward buffer condition, the control device controls the second reversing valve 22 to switch, and the oil output by the first oil pump 81 and the oil output by the second oil pump 82 enter the low-pressure end of the first boosting mechanism and the second boosting mechanism respectively; the second pressure sensor 62 monitors the output pressure of the high-pressure end of the first boosting mechanism in real time;

[0054] 7. Similarly, when the real-time pressure output of the high-pressure end of the first boosting mechanism meets the preset first normal working condition and when the second displacement sensor 42 feeds back that the real-time displacement information of each boosting cylinder of the second boosting mechanism meets the preset second forward limit condition, the control device controls the third reversing valve 23 to reset and controls the fifth reversing valve 52 to reverse, and the oil output by the first oil pump 81 continues to supply oil to the low-pressure end of the boosting cylinder of the first boosting mechanism, while the oil output by the second oil pump 82 supplies oil to the high-pressure end of the boosting cylinder of the second boosting mechanism through the fifth reversing valve 52 and the fifth one-way valve 75, so that the boosting cylinder of the second boosting mechanism replenishes oil for the return stroke; when the boosting cylinders of the second boosting mechanism all return to the bottom, the control device controls the fifth reversing valve 52 to reset and stops replenishing oil to the high-pressure end of the boosting cylinder of the second boosting mechanism. Due to the isolation effect of the fifth one-way valve 75, the oil at the high-pressure end of the second boosting mechanism will not flow back to the oil tank;

[0055] 8. Such a cycle is performed to achieve the purpose of continuous and stable boost output to the working oil cylinder 1 until the real-time pressure of the working oil cylinder 1 meets the preset target pressure; the control device controls the first reversing valve 21, the second reversing valve 22, the third reversing valve 23 and the sixth reversing valve 26 to switch to the reset state, and controls the fourth reversing valve 51 and the fifth reversing valve 52 to switch, so that the oil output by the first oil pump 81 is supplied to the high-pressure end of the boosting cylinder of the first boosting mechanism through the fourth reversing valve 51 and the fourth check valve 74, and the oil output by the second oil pump 82 is supplied to the high-pressure end of the boosting cylinder of the second boosting mechanism through the fifth reversing valve 52 and the fifth check valve 75, so as to realize the return oil replenishment of the first boosting mechanism and the return oil replenishment of the second boosting mechanism;

[0056] 9. After the return stroke oil replenishment of the two boosting mechanisms is completed, the control device first controls the fourth check valve 74 and the fifth check valve 75 to reset, and then controls the first reversing valve 21 and the sixth reversing valve 26 to switch, and opens the third hydraulically controlled check valve 11 to release the load, and the first oil pump 81 and the second oil pump 82 supply oil to the oil rod chamber of the working oil cylinder 1 through the first reversing valve 21 and the sixth reversing valve 26, and the supporting function valve group 12 respectively. When the large chamber pressure of the working oil cylinder 1 drops to the preset low pressure range, the working oil cylinder 1 starts to return;

[0057] 10. When the working oil cylinder 1 returns to its position, the first reversing valve 21 and the sixth reversing valve 26 are controlled to reset, completing a continuous boosting cycle process of the continuous boosting system.

[0058] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A continuous boosting system, comprising a working oil cylinder and a control device, characterized in that: It also includes a first reversing mechanism, a first boosting mechanism, a second boosting mechanism, a second reversing mechanism and a monitoring mechanism which are electrically connected to the control device respectively, the input end of the first reversing mechanism and the input end of the second reversing mechanism are respectively used to connect to a pressure source, the output end of the first reversing mechanism is connected to the input end of the working oil cylinder or to the low-pressure end of the first boosting mechanism or to the low-pressure end of the second boosting mechanism; the high-pressure output end of the first boosting mechanism and the high-pressure output end of the second boosting mechanism are respectively connected to the input end of the working oil cylinder, the output end of the second reversing mechanism is connected to the high-pressure input end of the first boosting mechanism or to the high-pressure input end of the second boosting mechanism; the monitoring mechanism is used to obtain real-time status information of the working oil cylinder, the first boosting mechanism and the second boosting mechanism; The monitoring mechanism comprises a first pressure sensor, a second pressure sensor and a third pressure sensor which are electrically connected to the control device respectively, the first pressure sensor is used to obtain the real-time internal pressure of the working cylinder, the second pressure sensor is used to obtain the real-time working pressure of the first boosting mechanism, and the third pressure sensor is used to obtain the real-time working pressure of the second boosting mechanism; The structures of the first boosting mechanism and the second boosting mechanism are consistent; the first boosting mechanism includes a plurality of first boosting cylinders and a plurality of first displacement sensors electrically connected to the control device respectively, and each first boosting cylinder is connected to a corresponding first displacement sensor; the low-pressure end of any first boosting cylinder is connected to the output end of the first reversing mechanism, and the low-pressure ends of adjacent first boosting cylinders are connected to each other; the high-pressure output end of any first boosting cylinder is connected to the input end of the working oil cylinder, and the high-pressure input end of any first boosting cylinder is connected to the output end of the second reversing mechanism, and the high-pressure ends of adjacent first boosting cylinders are connected to each other; The first reversing mechanism comprises a first reversing valve, a second reversing valve, a third reversing valve, a sixth reversing valve, a first hydraulically controlled one-way valve and a second hydraulically controlled one-way valve, which are electrically connected to the control device respectively, and the pressure source comprises a first oil pump and a second oil pump; the input end of the first reversing valve and the input end of the second reversing valve are respectively connected to the first oil pump, and the input end of the sixth reversing valve and the input end of the third reversing valve are respectively connected to the second oil pump; the output end of the first reversing valve and the output end of the sixth reversing valve are respectively connected to the input end of the working oil cylinder, the output end of the second reversing valve is connected to the low-pressure end of the first boosting mechanism through the first hydraulically controlled one-way valve, and the output end of the third reversing valve is connected to the low-pressure end of the second boosting mechanism through the second hydraulically controlled one-way valve; When the first displacement sensor feeds back that the real-time displacement information of each boosting cylinder of the first boosting mechanism meets the preset first forward buffer condition, the third reversing valve is controlled to reverse, and the oil output by the first oil pump simultaneously enters the low-pressure end of the second boosting mechanism, and the pressurized oil is simultaneously delivered to the oil chamber of the working cylinder through the output end of the first boosting mechanism and the output end of the second boosting mechanism.

2. A continuous pressurization system according to claim 1, characterized in that: It also includes a first one-way valve and a second one-way valve. The high-pressure output end of the first boosting mechanism is connected to the input end of the working cylinder through the first one-way valve, and the high-pressure output end of the second boosting mechanism is connected to the input end of the working cylinder through the second one-way valve.

3. A continuous pressurization system according to claim 1, characterized in that: A third one-way valve is provided between the first reversing valve and the input end of the working oil cylinder, and the third one-way valve is used to prevent the oil in the working oil cylinder from flowing back to the first reversing valve.

4. A continuous pressurization system according to claim 1, characterized in that: The second reversing mechanism includes a fourth reversing valve and a fifth reversing valve, the input end of the fourth reversing valve is used to connect to the first oil pump, and the input end of the fifth reversing valve is used to connect to the second oil pump; the output end of the fourth reversing valve is connected to the high-pressure input end of the first boosting mechanism, and the output end of the fifth reversing valve is connected to the high-pressure input end of the second boosting mechanism.

5. A continuous pressurization system according to claim 4, characterized in that: It also includes a fourth one-way valve and a fifth one-way valve. The fourth one-way valve is arranged between the fourth reversing valve and the high-pressure input end of the first boosting mechanism, and the fifth one-way valve is arranged between the fifth reversing valve and the high-pressure input end of the second boosting mechanism.

6. A continuous pressurization system according to claim 1, characterized in that: The first reversing valve and the sixth reversing valve are connected to the rod chamber of the working oil cylinder through a supporting function valve group.

7. A continuous pressurization system according to claim 1, characterized in that: The working oil cylinder is also connected to a third hydraulically controlled one-way valve, and the third hydraulically controlled one-way valve is electrically connected to the control device.

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