A four-leg coordinated control cantilever beam platform bidirectional sliding hydraulic system

Abstract

The patent discloses a four-pile-leg cooperative control cantilever beam platform bidirectional sliding hydraulic system, which comprises a hydraulic station, an oil inlet pipeline and an oil return pipeline connected with the hydraulic station respectively, a control valve group connected with the oil inlet pipeline and the oil return pipeline, a controller connected with the control valve group, at least one set of bidirectional sliding device connected with the control valve group, the bidirectional sliding device comprising a sliding oil cylinder one for controlling lateral movement and a sliding oil cylinder two for controlling longitudinal movement, the sliding oil cylinder one being two or more, the sliding oil cylinder two also being two or more, the control valve group being further connected with a bolt oil cylinder one for locking lateral position and a bolt oil cylinder two for locking longitudinal position, the sliding oil cylinder one and the sliding oil cylinder two being respectively provided with a torque sensor, and the torque sensor being connected with the controller. The bidirectional sliding hydraulic system realizes longitudinal and lateral movement of the platform, extension and retraction of the platform, detects the relative rotation angle value of both ends of the oil cylinder through the torque sensor, thereby preventing construction risks and accidents caused by excessive inclination of the platform, and greatly improving the safety of platform operation.

Description

Technical Field

[0001] This utility model relates to a cantilever beam platform drive device, and more particularly to a two-way sliding hydraulic system for a cantilever beam platform with coordinated control of four pile legs. Background Technology

[0002] Existing offshore oil drilling platforms often utilize movable cantilever beams to facilitate rig movement. This type of platform maximizes deck utilization, thereby expanding the drilling area and reducing extraction costs. Current technologies primarily employ rack and pinion power transmission and lead screw and nut power transmission to drive platform movement. Both methods carry the risk of instability when the platform extends too far, and the harsh marine environment, including storms and waves, can easily cause transmission mechanism jamming and failure, leading to frequent maintenance and limiting mass production. Furthermore, the low transmission efficiency results in significant energy waste. Utility Model Content

[0003] The purpose of this invention is to provide a two-way sliding hydraulic system for a cantilever beam platform with coordinated control of four pile legs, which solves the problems of poor movement stability and poor safety assurance in severe weather conditions of the existing cantilever beam platform.

[0004] To achieve the purpose of this utility model, it includes: a hydraulic station, with an oil inlet pipe and an oil return pipe connected to the hydraulic station respectively. The oil inlet pipe and the oil return pipe are connected to a control valve group, which is connected to a controller. The control valve group is connected to at least one set of bidirectional sliding devices. The bidirectional sliding devices include: a sliding cylinder one for controlling lateral movement and a sliding cylinder two for controlling longitudinal movement. There are two or more sliding cylinders one and two or more sliding cylinders two. The control valve group is also connected to a pin cylinder one for locking the lateral position and a pin cylinder two for locking the longitudinal position. Torque sensors are respectively provided on the sliding cylinder one and the sliding cylinder two, and the torque sensors are connected to the controller.

[0005] Both the sliding cylinder one and the sliding cylinder two are equipped with displacement sensors, which are connected to the controller.

[0006] There are four sliding cylinders in each of the two types.

[0007] The bidirectional sliding device consists of four sets.

[0008] Both the first and second sliding cylinders are equipped with LS feedback oil circuits, which are connected to the variable pump on the hydraulic station.

[0009] A shuttle valve is installed on the LS feedback oil line.

[0010] This utility model achieves longitudinal and lateral movement of the platform, as well as the extension and retraction of the platform, through the cooperation of sliding cylinder one, sliding cylinder two, pin cylinder one, and pin cylinder two. Furthermore, by detecting the relative rotation angle between the two ends of the cylinders through a torque sensor, it prevents construction risks and accidents caused by excessive tilting of the platform, thus greatly improving the safety of platform operation. Attached Figure Description

[0011] Figure 1 This is the system principle of this utility model. Figure 2 This is a perspective view of the installation of this utility model. Detailed Implementation

[0012] like Figure 1 and Figure 2 The present invention includes: a hydraulic station 1, with an inlet oil line 2 and a return oil line 3 connected to the hydraulic station 1. The inlet oil line 2 and the return oil line 3 are connected to a control valve group, which is connected to a controller. There are two control valve groups: control valve group one 4 and control valve group two 5. Each control valve group is connected to four sets of bidirectional sliding devices. Each bidirectional sliding device includes: a sliding cylinder one 6 for controlling lateral movement and a sliding cylinder two 9 for controlling longitudinal movement. There are four sliding cylinders of each type. The control valve group is also connected to a pin cylinder one 7 for locking the lateral position and a pin cylinder two for locking the longitudinal position. Torque sensors are installed on sliding cylinder one 6 and sliding cylinder two 9, respectively. The torque sensors are connected to the controller and are used to detect the relative rotation angle between the two ends of sliding cylinder one and sliding cylinder two. If the detected current rotation angle exceeds a preset value, it indicates that the tilt angle of the entire platform is too large. The controller then cuts off the hydraulic supply to the hydraulic station 1, thereby preventing construction risks and accidents caused by excessive platform tilt. The longitudinal direction of this utility model refers to the direction along the main axis of the cantilever beam, and the transverse direction refers to the direction perpendicular to the main axis of the cantilever beam.

[0013] Sliding cylinder 6 and sliding cylinder 9 are equipped with displacement sensors 8. The displacement sensors 8 are connected to the controller. The displacement sensors 8 are magnetostrictive displacement sensors. When the controller detects that the movement speed of a specific cylinder in sliding cylinder 6 and sliding cylinder 9 is too fast through the displacement sensors 8, it will send feedback to the controller, which will cut off the oil circuit corresponding to the solenoid valve of the specific cylinder to reduce the speed of the specific cylinder. When the stroke of the specific cylinder is about to return to the same level, it will be powered on again to ensure normal movement.

[0014] In a further improvement, both sliding cylinder 6 and sliding cylinder 9 are equipped with an LS feedback oil circuit. The LS feedback oil circuit is connected to the variable pump on the hydraulic station 1, and a shuttle valve is installed on the LS feedback oil circuit. The LS feedback oil circuit ensures that when the required thrust of each sliding cylinder 6 and sliding cylinder 9 differs, the corresponding flow rate of all sliding cylinders 6 and 9 is consistent, thereby achieving synchronous movement of all cylinders and preventing accidents such as cylinder breakage due to asynchronous movement. As part of this improvement, the synchronization of sliding cylinders 6 and 9 is controlled by the LS feedback oil circuit and the variable pump. The displacement sensor is only used to detect the displacement of each cylinder in sliding cylinders 6 and 9 to further test the synchronization effect. If synchronization by the LS feedback oil circuit fails, the displacement sensor 8 and the controller will then perform joint control according to the above description.

[0015] The steps for the lateral extension of the control platform of this utility model are as follows: The controller uses control valve group two 5 to cause the pin cylinder one 7 to extend the pin and insert it into the socket on the track, thereby ensuring that the sliding cylinder one 6 and the entire platform move together synchronously through a rigid connection. The controller uses control valve group one 4 to extend the sliding cylinder one 6, thereby causing the platform to move laterally by one stroke. Then, control valve group two 5 uses pin cylinder one 7 to retract the pin, thereby causing the sliding cylinder one 6 to lose connection with the platform, and control valve group one 4 to retract the sliding cylinder one 6. Then, control valve group two 5 uses pin cylinder one 7 to extend the pin and insert it into another set of sockets. Then, control valve group one 4 causes the sliding cylinder one 6 to extend, thereby pushing the platform to extend by one stroke. This process is repeated until the platform is fully extended. When retracting the platform, simply pull the platform back segment by segment in the opposite direction. The steps for longitudinal movement are the same as those for lateral movement.

[0016] The embodiments described above merely illustrate several implementations of this utility model, and should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A bidirectional sliding hydraulic system for a cantilever beam platform with coordinated control of four pile legs, comprising: A hydraulic power unit is connected to an inlet oil line and a return oil line, which are connected to a control valve assembly. The control valve assembly is connected to a controller. The control valve assembly is characterized by being connected to at least one bidirectional sliding device, which includes: a sliding cylinder one for controlling lateral movement and a sliding cylinder two for controlling longitudinal movement. There are two or more sliding cylinders of each type. The control valve assembly is also connected to a pin cylinder one for locking the lateral position and a pin cylinder two for locking the longitudinal position. Torque sensors are respectively installed on sliding cylinder one and sliding cylinder two, and the torque sensors are connected to the controller.

2. The four-leg coordinated control bidirectional sliding hydraulic system for a cantilever beam platform according to claim 1, characterized in that, Both the sliding cylinder one and the sliding cylinder two are equipped with displacement sensors, which are connected to the controller.

3. A four-leg coordinated control bidirectional sliding hydraulic system for a cantilever beam platform according to claim 1 or 2, characterized in that, There are four sliding cylinders in each of the two types.

4. The four-leg coordinated control bidirectional sliding hydraulic system for a cantilever beam platform according to claim 3, characterized in that, The aforementioned bidirectional sliding device consists of four sets.

5. The four-leg coordinated control bidirectional sliding hydraulic system for a cantilever beam platform according to claim 4, characterized in that, Both the first and second sliding cylinders are equipped with LS feedback oil circuits, which are connected to the variable pump on the hydraulic station.

6. The four-leg coordinated control bidirectional sliding hydraulic system for a cantilever beam platform according to claim 5, characterized in that, A shuttle valve is installed on the LS feedback oil line.

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