Hydraulic hoist control system

Abstract

The invention relates to a hydraulic hoist control system which comprises a hoist oil cylinder, a common power source, an emergency power source, a hydraulic control mechanism and a reversing mechanism. The reversing mechanism comprises a first hydraulic control valve and a second hydraulic control valve, and the hydraulic control mechanism is connected with control parts of the first hydraulic control valve and the second hydraulic control valve. The hydraulic control mechanism controls the first hydraulic control valve and the second hydraulic control valve to be switched on and switched off so that the hoist oil cylinder can be selectively communicated with the common power source or the emergency power source. Therefore, the opening and closing machine oil cylinder switching is conveniently controlled to be communicated with a common power source or an emergency power source, and the problems that in the related technology, opening and closing machine oil cylinder loop switching is tedious, and misoperation is prone to occurring are solved.

Description

Technical Field

[0001] The present disclosure relates to the field of hydraulic hoists in hydropower stations, and in particular to a hydraulic hoist control system. Background Art

[0002] The hydraulic gate hoist of a hydropower station mainly includes an oil station and an oil cylinder. The emergency device is a device that can control the movement of the gate hoist cylinder when the original gate hoist oil station fails or cannot be used for other reasons. The gate hoist oil station and the emergency device are both devices that control the movement of the oil cylinder, and the two serve as backups for each other. The gate hoist oil station and the emergency device are connected in parallel to the gate hoist cylinder and do not interfere with each other when in use. The general connection scheme is that the gate hoist oil station and the emergency device are equipped with their own ball valves. When using the gate hoist oil station to control the oil cylinder, open the ball valve on the gate hoist oil station pipeline and close the ball valve on the emergency device pipeline. When using the emergency device to control the oil cylinder, open the ball valve on the emergency device pipeline and close the ball valve on the gate hoist oil station pipeline. However, the switching of the above-mentioned ball valves is cumbersome and prone to misoperation. Summary of the Invention

[0003] The purpose of the present disclosure is to provide a hydraulic hoist control system that can quickly switch the hoist oil station and the emergency device to at least partially solve the above technical problems.

[0004] In order to achieve the above-mentioned objectives, the present disclosure provides a hydraulic hoist control system, including a hoist cylinder, a common power source, an emergency power source, a hydraulic control mechanism and a reversing mechanism. The hoist cylinder is connected to the common power source and the emergency power source respectively through the reversing mechanism. The reversing mechanism includes a first hydraulic control valve and a second hydraulic control valve. The hydraulic control mechanism is connected to the control parts of the first hydraulic control valve and the second hydraulic control valve so that the hydraulic control mechanism controls the on and off of the first hydraulic control valve and the second hydraulic control valve to selectively connect the hoist cylinder to the common power source or the emergency power source.

[0005] Optionally, the hydraulic control mechanism includes a power assembly, a first oil channel connected to a first hydraulic control valve, a second oil channel connected to the second hydraulic control valve, and a reversing control valve group, the reversing control valve group being connected to the power assembly, the first oil channel, and the second oil channel, respectively, the power assembly being used to provide high-pressure hydraulic oil to the reversing control valve group, and the reversing control valve group being configured to selectively connect the power assembly to the first oil channel or the second oil channel.

[0006] Optionally, the reversing control valve group includes a reversing valve, the inlet of the reversing valve is connected to the power assembly, and the outlet of the reversing valve is connected to the first oil channel and the second oil channel respectively, and the reversing valve is configured to be able to selectively connect the power assembly to the first oil channel or to the second oil channel.

[0007] Optionally, the reversing control valve group also includes two hydraulically controlled one-way valves, which are respectively arranged in the first oil channel and the second oil channel, and each of the hydraulically controlled one-way valves is provided with an auxiliary oil circuit, wherein the auxiliary oil circuit of the hydraulically controlled one-way valve located on the first oil channel is connected to the second oil channel, and the auxiliary oil circuit of the hydraulically controlled one-way valve located on the second oil channel is connected to the first oil channel.

[0008] Optionally, the hydraulic hoist control system further includes two throttle valves, which are respectively arranged in the first oil passage and the second oil passage.

[0009] Optionally, the power assembly includes an accumulator, the accumulator is connected to the inlet of the reversing valve, and a one-way valve is provided between the accumulator and the reversing valve.

[0010] Optionally, the power assembly further includes an oil tank and a power pump connected to the oil tank, the outlet of the power pump is connected to the inlet of the reversing valve; and / or an overflow circuit is provided on the oil pipe between the power pump and the reversing valve, and an overflow valve is provided on the overflow circuit.

[0011] Optionally, the hydraulic hoist control system further includes a plurality of pressure sensors and a plurality of pressure gauges, wherein the pressure sensors and the pressure gauges are connected in series and are respectively located on the first oil passage and the second oil passage.

[0012] Optionally, the reversing mechanism is connected to the normal power source through a normal hydraulic circuit, connected to the emergency power source through an emergency hydraulic circuit, and connected to the hoist cylinder through a common circuit; and / or a shut-off valve is provided on the common circuit.

[0013] Optionally, there are multiple reversing mechanisms, each of which is connected to the common power source through a common hydraulic circuit, is connected to the emergency power source through an emergency hydraulic circuit, and is connected to the opening and closing machine cylinder through a common circuit, and multiple reversing mechanisms are connected to the hydraulic control mechanism.

[0014] By means of the above technical solution, through the reversing mechanism and the hydraulic control mechanism in the hydraulic valve assembly, when the common power source fails and cannot supply fluid normally, the hydraulic control mechanism controls the first hydraulic control valve in the reversing mechanism to be closed by applying pressure, thereby connecting the gate cylinder to the emergency power source, and driving the gate cylinder to perform an action by the hydraulic oil of the emergency power source. When the common power source fails and can supply fluid normally, the hydraulic control mechanism controls the second hydraulic control valve in the reversing mechanism to be closed by applying pressure, thereby connecting the gate cylinder to the common power source, and driving the gate cylinder to perform an action by the hydraulic oil of the common power source. In this way, the opening and closing of the first hydraulic control valve and the second hydraulic control valve in the reversing mechanism are controlled by the hydraulic control mechanism, so that the gate cylinder can be selectively connected to the common power source or the emergency power source, which facilitates the control of switching the gate cylinder to be connected to the common power source or to the emergency power source, thereby avoiding the problems of cumbersome and easy misoperation when switching the gate cylinder circuit in the related art.

[0015] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0017] Figure 1 1 is a flow chart of a hydraulic hoist control system provided in an exemplary embodiment of the present disclosure, in which the reversing valve is located in a first position;

[0018] Figure 2 is a flow chart of a hydraulic hoist control system provided in an exemplary embodiment of the present disclosure, in which the reversing valve is located in the second position;

[0019] Figure 3 is a flow chart of a hydraulic hoist control system provided in an exemplary embodiment of the present disclosure, in which the reversing valve is located in the third position;

[0020] Figure 4 It is a flow chart of another hydraulic hoist control system provided in an exemplary embodiment of the present disclosure.

[0021] Description of Reference Numerals

[0022] 1-Host cylinder; 2-Normal power source; 3-Emergency power source; 4-Hydraulic control mechanism; 41-Reversing valve; 42-Power assembly; 421-Accumulator; 422-Oil tank; 423-Power pump; 424-Overflow valve; 425-Second pressure gauge; 426-Second pressure sensor; 427-Check valve; 43-Hydraulic-controlled check valve; 44-Throttle valve; 45-First pressure sensor; 46-First pressure gauge; 5-Reversing mechanism; 51-First hydraulic control valve; 52-Second hydraulic control valve; 6-Normal hydraulic circuit; 7-Emergency hydraulic circuit; 8-First oil channel; 9-Second oil channel; 10-Common circuit; 11-Stop valve. DETAILED DESCRIPTION

[0023] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0024] In this disclosure, unless otherwise indicated, the terms "first," "second," and the like are used to distinguish one element from another and do not imply order or importance. In the following description, when referring to the accompanying drawings, identical numerals in different drawings represent identical or similar elements unless otherwise indicated.

[0025] like Figure 1-Figure 4 As shown, the present disclosure provides a hydraulic gate hoist control system, including a gate hoist cylinder 1, a common power source 2, an emergency power source 3, a hydraulic control mechanism 4 and a reversing mechanism 5. The gate hoist cylinder 1 is connected to the common power source 2 and the emergency power source 3 respectively through the reversing mechanism 5. The reversing mechanism 5 includes a first hydraulic control valve 51 and a second hydraulic control valve 52. The hydraulic control mechanism 4 is connected to the control parts of the first hydraulic control valve 51 and the second hydraulic control valve 52, so that the hydraulic control mechanism 4 controls the on and off of the first hydraulic control valve 51 and the second hydraulic control valve 52 to selectively connect the gate hoist cylinder 1 to the common power source 2 or the emergency power source 3.

[0026] Through the above technical solution, through the reversing mechanism 5 and the hydraulic control mechanism 4 in the hydraulic valve assembly, when the common power source 2 fails and cannot supply fluid normally, the hydraulic control mechanism 4 controls the first hydraulic control valve 51 in the reversing mechanism 5 to close by applying pressure, thereby connecting the hoist cylinder 1 with the emergency power source 3, and driving the hoist cylinder 1 to perform the action by the hydraulic oil of the emergency power source. When the common power source 2 fails and can supply fluid normally, the hydraulic control mechanism 4 controls the second hydraulic control valve 52 in the reversing mechanism 5 to close by applying pressure. Thereby, the hoist cylinder 1 is connected to the common power source 2, and the hydraulic oil of the common power source 2 drives the hoist cylinder 1 to perform the action. In this way, the opening and closing of the first hydraulic control valve 51 and the second hydraulic control valve 52 in the reversing mechanism 5 are controlled by the hydraulic control mechanism 4, so that the hoist cylinder 1 can be selectively connected to the common power source 2 or the emergency power source 3, which is convenient for controlling the hoist cylinder 1 to be connected to the common power source 2 or the emergency power source 3, avoiding the problem of cumbersome and easy misoperation when switching the hoist cylinder circuit in the related art.

[0027] In some practicable embodiments, in order to facilitate the hydraulic control mechanism 4 to control the on-off of the first hydraulic control valve 51 and the second hydraulic control valve 52, the hydraulic control mechanism 4 includes a power assembly 42, a first oil passage 8, a second oil passage 9 and a reversing control valve group. The reversing control valve group is respectively connected to the power assembly 42, the first oil passage 8 and the second oil passage 9. The power assembly 42 is used to provide high-pressure hydraulic oil to the reversing control valve group. The reversing control valve group is configured to selectively connect the power assembly 42 to the first oil passage 8 or the second oil passage 9. For example, the first hydraulic control valve 51 and the second hydraulic control valve 52 can both adopt two-way logic valves. The reversing control valve group can selectively deliver the high-pressure hydraulic oil of the power assembly 42 to the first hydraulic control valve 51 through the first oil channel 8 and control the valve core in the first hydraulic control valve 51 to move forward, thereby closing the first hydraulic control valve 51, thereby disconnecting the common power source 2 from the hoist cylinder 1, switching the hoist cylinder 1 from being connected to the common power source 2 to being connected to the emergency power source 3, and the hydraulic oil from the emergency power source 3 controls the valve core of the second hydraulic control valve 52 to move in the opposite direction, thereby opening the second hydraulic control valve 52 so that the hydraulic oil of the emergency power source 3 can be connected to the hoist cylinder 1 is connected, thereby the hydraulic oil of the emergency power source 3 drives the hoist cylinder 1 to perform the action, and the hydraulic oil in the second hydraulic control valve 52 flows in the reverse direction through the second oil channel 9, the reversing control valve group, and the reversing valve 41 to return to the preset oil tank 422. Of course, when the fault of the common power source 2 is eliminated, the reversing control valve group can selectively connect the high-pressure hydraulic oil of the power component 42 with the second hydraulic control valve 52 through the second oil channel 9, thereby moving the valve core of the second hydraulic control valve 52 forward to close the second hydraulic control valve 52, disconnecting the emergency power source 3 from the hoist cylinder 1, thereby disconnecting the hoist cylinder 1 from the emergency power source 3. The emergency power source 3 is switched to connect the hoist cylinder 1 with the normal power source 2. The hydraulic oil of the normal power source 2 controls the valve core of the first hydraulic control valve 51 to move in the opposite direction, thereby opening the first hydraulic control valve 51 to connect the normal power source 2 with the hoist cylinder 1, thereby driving the hoist cylinder 1 to perform the action through the hydraulic oil of the normal power source 2. The hydraulic oil in the first hydraulic control valve 51 flows in the opposite direction and passes through the first oil channel 8, the reversing control valve group, and the reversing valve 41 in turn and flows back to the preset oil tank 422, thereby facilitating the control of the hoist cylinder 1 to switch to connect with the normal power source 2 or to connect with the emergency power source 3.

[0028] In order to facilitate the hydraulic control mechanism 4 to control the on and off of the first hydraulic control valve 51 and the second hydraulic control valve 52, in some embodiments, the reversing control valve group includes a reversing valve 41, the inlet of the reversing valve 41 is connected to the power assembly 42, and the outlet of the reversing valve 41 is connected to the first oil channel 8 and the second oil channel 9 respectively. The reversing valve 41 is configured to selectively connect the power assembly 42 to the first oil channel 8 or the second oil channel 9. For example, the reversing valve 41 has a first position, a second position, and a third position. The reversing valve 41 can be a manual valve or a solenoid valve. When the reversing valve 41 is in the first position, as shown in FIG. Figure 1 As shown, the pressurization direction of the hydraulic oil is the direction of the solid arrow, and the return direction of the hydraulic oil is the direction of the dotted arrow. The power assembly 42 is connected to the first oil channel 8 through the reversing valve 41. The high-pressure oil in the power assembly 42 is sent to the first hydraulic control valve 51 through the first oil channel 8 to make the valve core of the first hydraulic control valve 51 move forward, thereby closing the first hydraulic control valve 51, thereby disconnecting the common power source 2 from the hoist cylinder 1, and the hoist cylinder 1 is connected to the emergency power source 3. The hydraulic oil through the emergency power source 3 controls the valve core of the second hydraulic control valve 52 to move in the reverse direction, thereby opening the second hydraulic control valve 52 so that the hydraulic oil of the emergency power source 3 can be connected to the hoist cylinder 1, thereby driving the hoist cylinder 1 to perform the action through the hydraulic oil of the emergency power source 3. The hydraulic oil in the second hydraulic control valve 52 flows in the reverse direction through the second oil channel 9, the reversing control valve group, and the reversing valve 41 in turn and flows back to the preset oil tank 422. Of course, when the reversing valve 41 is in the second position, as shown in FIG. Figure 2 As shown, the pressurization direction of the hydraulic oil is the direction of the solid arrow, and the return direction of the hydraulic oil is the direction of the dotted arrow. The high-pressure hydraulic oil of the power assembly 42 is connected to the second hydraulic control valve 52 through the second oil channel 9, thereby moving the valve core of the second hydraulic control valve 52 forward to close the second hydraulic control valve 52, disconnecting the emergency power source 3 from the hoist cylinder 1, and the hoist cylinder 1 is connected to the common power source 2. The hydraulic oil of the common power source 2 controls the valve core of the first hydraulic control valve 51 to move in the reverse direction, thereby opening the first hydraulic control valve 51 so that the common power source 2 is connected to the hoist cylinder 1, thereby driving the hoist cylinder 1 to perform the action through the hydraulic oil of the common power source 2. The hydraulic oil in the first hydraulic control valve 51 flows in the reverse direction through the first oil channel 8, the reversing control valve group, and the reversing valve 41 in turn and flows back to the preset oil tank 422, thereby facilitating the control of the hoist cylinder 1 to switch between connecting to the common power source 2 or connecting to the emergency power source 3. When the reversing valve 41 is in the third position, as shown in FIG. Figure 3 As shown, the power assembly 42 is disconnected from both the first oil passage 8 and the second oil passage 9 .

[0029] In order to ensure that the hydraulic hoist cylinder 1 of the hydraulic hoist control system switches smoothly with the common power source 2 or the emergency power source 3 and prevent the hydraulic hoist control system from malfunctioning, in some feasible ways, the reversing control valve group also includes two hydraulically controlled one-way valves 43, which are respectively arranged on the first oil channel 8 and the second oil channel 9. The hydraulically controlled one-way valves 43 are each provided with an auxiliary oil circuit, wherein the auxiliary oil circuit of the hydraulically controlled one-way valve 43 located on the first oil channel 8 is connected to the second oil channel 9, and the auxiliary oil circuit of the hydraulically controlled one-way valve 43 located on the second oil channel 9 is connected to the first oil channel 8. In this way, the hydraulic oil backflow in the corresponding first oil channel 8 and the second oil channel 9 can be prevented by the setting of the hydraulically controlled one-way valve 43, so that the pressure of the hydraulic oil injected into the first hydraulic control valve 51 or the second hydraulic control valve 52 is stable, so that the hoist cylinder 1 switches smoothly with the common power source 2 or the emergency power source 3 and prevents the hydraulic hoist control system from malfunctioning. In addition, in order to facilitate the return of hydraulic oil in the first hydraulic control valve 51 or the second hydraulic control valve 52, when the high-pressure oil in the power assembly 42 passes through the first oil channel 8, part of the high-pressure oil will open the hydraulically controlled one-way valve 43 on the second oil channel 9 through the auxiliary oil channel, so that the hydraulic oil in the second hydraulic control valve 52 can return through the second oil channel 9; of course, when the high-pressure oil in the power assembly 42 passes through the second oil channel 9, part of the high-pressure oil will open the hydraulically controlled one-way valve 43 on the first oil channel 8 through the auxiliary oil channel, so that the hydraulic oil in the first hydraulic control valve 51 can return through the first oil channel 8.

[0030] In order to facilitate the regulation of the hydraulic pressure entering the first hydraulic control valve 51 and the second hydraulic control valve 52, in some feasible embodiments, the hydraulic opening and closing machine control system also includes two throttle valves 44, one of the two throttle valves 44 is arranged in the first oil channel 8 and is located between the first hydraulic control valve 51 and the reversing control valve group, and the other throttle valve 44 is arranged in the second oil channel 9 and is located between the second hydraulic control valve 52 and the reversing control valve group. In this way, the flow of hydraulic oil flowing out of the reversing valve group is regulated by the throttle valve 44 to facilitate the adjustment of the flow entering the first hydraulic control valve 51 in the first oil channel 8 and the flow entering the second hydraulic control valve 52 in the second oil channel 9, so that the first hydraulic control valve 51 and the second hydraulic control valve 52 can have sufficient pressure to close or open smoothly.

[0031] In order to facilitate the power assembly 42 to deliver high-pressure oil, in some feasible embodiments, the power assembly 42 includes an accumulator 421, and the accumulator 421 can be injected with high-pressure oil through a pressure pump. The accumulator 421 is connected to the inlet of the reversing valve 41 through an oil pipe. Therefore, when the reversing valve 41 is in the first position, the high-pressure oil in the accumulator 421 enters the first hydraulic control valve 51 through the first oil channel 8 to close the first hydraulic control valve 51, connect the hoist cylinder 1 with the emergency power source 3, and drive the hoist cylinder 1 to perform the action through the emergency power source 3; when the reversing valve 41 is in the second position, the high-pressure oil in the accumulator 421 enters the second hydraulic control valve 52 through the second oil channel 9 to close the second hydraulic control valve 52, switch the hoist cylinder 1 to be connected to the common power source 2, and drive the hoist cylinder 1 to perform the action through the common power source 2. In addition, in order to maintain the hydraulic oil pressure in the first oil channel 8 or the second oil channel 9, a one-way valve 427 is provided on the oil pipe between the accumulator 421 and the reversing valve 41, so that the hydraulic oil is prevented from flowing back through the setting of the one-way valve 427, so that the hydraulic oil pressure in the first oil channel 8 or the second oil channel 9 is stable.

[0032] In addition, in some feasible embodiments, in addition to the structure in which the accumulator 421 provides high-pressure oil, the power assembly 42 may also include an oil tank 422 and a power pump 423 connected to the oil tank 422, and the outlet of the power pump 423 is connected to the inlet of the reversing valve 41. A one-way valve may also be provided between the accumulator 421 and the power pump 423, so that after the power pump 423 replenishes the pressure to the accumulator 421, hydraulic backflow can be prevented to keep the pressure in the accumulator 421 stable. Of course, through the setting of the power pump 423, the hydraulic oil in the oil tank 422 can be pressurized and sent to the first oil channel 8 or the second oil channel 9 through the reversing valve 41, thereby facilitating the switching of the opening and closing machine cylinder 1 to connect with the normal power source 2 or the emergency power source 3.

[0033] In order to avoid excessive hydraulic pressure in the first oil channel 8 or the second oil channel 9, in some feasible methods, an overflow circuit is provided on the oil pipe between the power pump 423 and the reversing valve, and an overflow valve 424 is provided on the overflow circuit. In this way, excess hydraulic oil can be discharged through the overflow circuit by opening the overflow valve 424, thereby avoiding excessive hydraulic pressure in the first oil channel 8 or the second oil channel 9.

[0034] In order to facilitate the control of the hydraulic hoist control system, in some feasible ways, the hydraulic hoist control system further includes a plurality of pressure sensors and a plurality of pressure gauges, wherein the pressure sensors and the pressure gauges are connected in series and are respectively located on the first oil passage 8 and the second oil passage 9. For example, the pressure sensor may include two first pressure sensors 45 and two first pressure gauges 46, and the two first pressure sensors 45 are respectively located on the first oil passage 8 and the second oil passage 9. The hydraulic pressures in the first oil passage 8 and the second oil passage 9 are monitored in real time by the first pressure sensors 45 so as to control the closing state of the first hydraulic control valve 51 and the second hydraulic control valve 52. For example, when the high When the pressurized oil passes through the first oil channel 8 and enters the first hydraulic control valve 51 to close the first hydraulic control valve 51, the first pressure sensor 45 and the first pressure gauge 46 located on the first oil channel 8 monitor the hydraulic pressure of the first oil channel 8 in real time, thereby feedbacking the opening and closing status of the first hydraulic control valve 51 through the data of the first pressure sensor 45 and the first pressure gauge 46. When the pressure in the first oil channel 8 is lower than the preset value, the first oil channel 8 can be pressurized to maintain the pressure of the first hydraulic control valve 51 stable, thereby keeping the first hydraulic control valve 51 in a closed state. Similarly, when the hydraulic pressure of the second oil channel 9 is monitored in real time, the first oil channel 8 is referenced.

[0035] Of course, the pressure sensor also includes a second pressure sensor 426, and the pressure gauge also includes a second pressure gauge 425. The second pressure sensor 426 and the second pressure gauge 425 are located on the oil pipe at the inlet of the reversing valve 41 to control the pressure of the hydraulic oil entering the reversing valve 41 in real time.

[0036] In some practicable embodiments, in order to facilitate the communication between the common power source 2 and the emergency power source 3 and the hoist cylinder 1, the reversing mechanism 5 is connected to the common power source 2 through the common hydraulic circuit 6, to the emergency power source 3 through the emergency hydraulic circuit 7, and to the hoist cylinder 1 through the common circuit 10. Among them, the common power source 2 may include a motor pump and a hydraulic oil tank, the motor pump is used to pressurize the hydraulic oil in the hydraulic oil tank and reversely lift the valve core through the common hydraulic circuit 6 through the first hydraulic control valve 51 in the reversing mechanism 5, so that the common power source 2 is connected to the hoist cylinder 1, so that the hoist cylinder 1 is driven by the common power source 2 to perform an action; of course, the emergency power source 3 may be an emergency accumulator, through which the high-pressure oil is passed through the emergency hydraulic circuit 7 through the second hydraulic control valve 52 in the reversing mechanism 5 to reversely lift the valve core, thereby connecting the emergency hydraulic circuit 7 to the hoist cylinder 1, so that the hoist cylinder 1 is driven by the emergency power source 3 to perform an action.

[0037] In some feasible embodiments, a shut-off valve is provided on the common circuit 10. The shut-off valve can be a manual valve or a solenoid valve. The shut-off valve is a backup valve. When the system is not used for a long time, the shut-off valve is closed to prevent the hoist cylinder 1 from slipping and prevent malfunction.

[0038] In addition, in some feasible embodiments, there are multiple reversing mechanisms 5, each reversing mechanism 5 is connected to the common power source 2 through the corresponding common hydraulic circuit 6, is connected to the emergency power source 3 through the corresponding emergency hydraulic circuit 7, and is connected to the gate cylinder 1 through the corresponding common circuit 10, and multiple reversing mechanisms 5 are all connected to the hydraulic control mechanism 4, wherein the number of common hydraulic circuits 6, emergency hydraulic circuits 7 and common circuits 10 is equal to that of the reversing mechanisms 5, multiple common hydraulic circuits 6, multiple emergency hydraulic circuits 7 and multiple common circuits 10 are all arranged in parallel, and the hydraulic control mechanism 4 is connected to the control part of multiple reversing mechanisms 5, so that by controlling the hydraulic control mechanism 4, multiple reversing mechanisms 5 can be simultaneously controlled to synchronously switch the gate cylinder 1 to connect with the emergency power source 3 or with the common power source 2.

[0039] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0040] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0041] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A hydraulic hoist control system, characterized in that: It includes a hoist cylinder, a normal power source, an emergency power source, a hydraulic control mechanism and a reversing mechanism. The hoist cylinder is connected to the normal power source and the emergency power source respectively through the reversing mechanism. The reversing mechanism includes a first hydraulic control valve and a second hydraulic control valve. The hydraulic control mechanism is connected to the control parts of the first hydraulic control valve and the second hydraulic control valve, so that the hydraulic control mechanism controls the on and off of the first hydraulic control valve and the second hydraulic control valve to selectively connect the hoist cylinder to the normal power source or the emergency power source.

2. The hydraulic hoist control system according to claim 1, characterized in that: The hydraulic control mechanism includes a power assembly, a first oil channel connected to a first hydraulic control valve, a second oil channel connected to the second hydraulic control valve, and a reversing control valve group. The reversing control valve group is respectively connected to the power assembly, the first oil channel, and the second oil channel. The power assembly is used to provide high-pressure hydraulic oil to the reversing control valve group. The reversing control valve group is configured to selectively connect the power assembly to the first oil channel or the second oil channel.

3. The hydraulic hoist control system according to claim 2, characterized in that: The reversing control valve group includes a reversing valve, the inlet of the reversing valve is connected to the power assembly, and the outlet of the reversing valve is connected to the first oil channel and the second oil channel respectively. The reversing valve is configured to selectively connect the power assembly to the first oil channel or the second oil channel.

4. The hydraulic hoist control system according to claim 3, characterized in that: The reversing control valve group also includes two hydraulically controlled one-way valves, which are respectively arranged in the first oil channel and the second oil channel. The hydraulically controlled one-way valves are both provided with auxiliary oil circuits, wherein the auxiliary oil circuit of the hydraulically controlled one-way valve located on the first oil channel is connected to the second oil channel, and the auxiliary oil circuit of the hydraulically controlled one-way valve located on the second oil channel is connected to the first oil channel.

5. The hydraulic hoist control system according to claim 2, characterized in that: The hydraulic hoist control system further includes two throttle valves, which are respectively arranged in the first oil passage and the second oil passage.

6. The hydraulic hoist control system according to claim 3 or 4, characterized in that: The power assembly includes an accumulator, which is communicated with the inlet of the reversing valve. A one-way valve is provided between the accumulator and the reversing valve.

7. The hydraulic hoist control system according to claim 6, characterized in that: The power assembly further includes an oil tank and a power pump connected to the oil tank, wherein the outlet of the power pump is connected to the inlet of the reversing valve; and / or An overflow circuit is provided on the oil pipe between the power pump and the reversing valve, and an overflow valve is provided on the overflow circuit.

8. The hydraulic hoist control system according to claim 2, characterized in that: The hydraulic hoist control system further includes a plurality of pressure sensors and a plurality of pressure gauges, wherein the pressure sensors and the pressure gauges are connected in series and are located on the first oil passage and the second oil passage, respectively.

9. The hydraulic hoist control system according to claim 1, characterized in that: The reversing mechanism is connected to the common power source through a common hydraulic circuit, is connected to the emergency power source through an emergency hydraulic circuit, and is connected to the hoist cylinder through a common circuit; and / or A stop valve is provided on the public circuit.

10. The hydraulic hoist control system according to claim 9, characterized in that: There are multiple reversing mechanisms, each of which is connected to the common power source through a common hydraulic circuit, is connected to the emergency power source through an emergency hydraulic circuit, and is connected to the opening and closing machine cylinder through a common circuit. Multiple reversing mechanisms are connected to the hydraulic control mechanism.

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