Fully automatic miniaturized hydraulic turning device

Abstract

The present invention relates to a fully automatic miniaturized hydraulic turning device, comprising a housing, a valve stem, and a pawl. An inner cylinder sleeve is housed in the housing, a piston in the inner cylinder sleeve is fitted to connect to the valve stem, the upper end of the valve stem passes through the inner cylinder sleeve top cover and is fixedly connected to the spring disk at the top, and the lower end of the valve stem passes through the base of the housing and the mounting interface and is connected to the pawl; an oil inlet sealing section is provided between the valve stem and the inner cylinder sleeve top cover, an oil return sealing section is provided between the valve stem and the base of the housing, a lubricating oil sealing section is provided between the valve stem and the mounting interface; an internal sealing section is provided between the piston of the valve stem and the inner cylinder sleeve. The fully automatic miniaturized hydraulic turning device of the present invention achieves a compact design while meeting large output force, realizes fully automatic turning through unit control integration, and ensures safe operation of the unit through measures such as displacement feedback and manual reversing valves.

Description

Technical Field

[0001] The invention relates to a winch device, in particular to a miniaturized hydraulic winch device. Background Art

[0002] Turning devices are typically used before starting a unit and after shutting down to prevent thermal bending of the rotor. Ratchet and pawl hydraulic turning devices are widely used on units due to their simple structure. They typically consist of a pawl and a toothed ratchet, with the pawl being the active component and the ratchet being the driven component. Hydraulic control is used to achieve unidirectional intermittent motion of the rotor. Figure 1 This is a schematic diagram of a commonly used hydraulic turning device. It uses low-pressure lubricating oil as its power source. Its overall size and weight are relatively large, and the achievable output force is relatively limited. It is only suitable for small shaft systems. At the same time, the turning device lacks connection with the overall control of the unit. The automation and safety of the device are relatively weak, and it relies to a large extent on human intervention. The failure rate of ratchet and pawl collision is relatively high. Summary of the Invention

[0003] The present invention proposes a new type of fully automatic miniaturized hydraulic turning device, which realizes the large output force, miniaturization, full automation and safety design of the turning device. The turning device adopts high-pressure hydraulic oil as the power source, can achieve a wide range of output force, and is suitable for various large and small shaft systems. At the same time, the size of the oil cylinder can be reduced to meet the miniaturization design.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a fully automatic miniaturized hydraulic winching device, comprising a shell, a valve stem, and a pawl, an inner cylinder sleeve being installed in the shell, a piston connected to the valve stem being matched in the inner cylinder sleeve, the upper end of the valve stem passing through the top cover of the inner cylinder sleeve and fixedly connected to the spring disk at the top, the lower end of the valve stem passing through the base and the mounting interface of the shell and connected to the pawl; an oil inlet sealing section is provided between the valve stem and the top cover of the inner cylinder sleeve, an oil return sealing section is provided between the valve stem and the base of the shell, a lubricating oil sealing section is provided between the valve stem and the mounting interface; an internal sealing section is provided between the piston of the valve stem and the inner cylinder sleeve.

[0005] Furthermore, an oil inlet and an oil return port are provided on the base of the shell. The oil inlet is connected to the upper oil chamber of the valve stem piston through the oil inlet groove in the inner cylinder sleeve, and the oil return port is connected to the lower oil chamber of the valve stem piston through the oil return groove in the base.

[0006] Furthermore, an electromagnetic reversing valve is provided in front of the oil inlet.

[0007] Furthermore, a manual reversing valve is provided in front of the oil inlet. In the event of a failure of the electromagnetic reversing valve, the manual reversing valve can ensure that the oil inlet tank is connected to the return oil.

[0008] Furthermore, a return spring is installed between the spring disk and the inner bottom of the shell and is sleeved on the outside of the inner cylinder sleeve.

[0009] Furthermore, the spring disk is connected to a displacement sensor installed on the side of the housing through a connecting piece.

[0010] Furthermore, an observation window is provided on the connecting sleeve between the base of the shell and the mounting interface.

[0011] Furthermore, the fully automatic miniaturized hydraulic winch device is connected to the bearing seat through a mounting interface, and the pawl is built into the bearing seat and cooperates with the ratchet on the rotor to realize intermittent rotation of the rotor.

[0012] The beneficial effects of the present invention are:

[0013] The winch device of the present invention effectively avoids oil leakage and mixing of different types of oil by providing three external sealing sections. Further, by providing an observation window, effective monitoring of the sealing status is achieved, facilitating timely replacement of sealing wearing parts.

[0014] The cranking device of the present invention adopts an electromagnetic reversing valve to control the oil inlet and return, thereby realizing fully automatic cranking of the unit. On this basis, the cranking working status signal is integrated into the unit startup control logic through a displacement sensor, effectively avoiding ratchet pawl collision failures caused by various types of misoperation. Furthermore, by adding a manual reversing valve, the safety of the unit can be effectively guaranteed when the electromagnetic reversing valve fails, while not affecting the normal startup and operation of the unit in an emergency.

[0015] The fully automatic miniaturized hydraulic winching device of the present invention realizes a compact design while meeting large output force, realizes fully automatic winching through unit control integration, and ensures safe operation of the unit through measures such as displacement feedback and manual reversing valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of an existing hydraulic turning device;

[0017] Figure 2 1. It is a front view of a fully automatic miniaturized hydraulic turning device according to an embodiment of the present invention;

[0018] Figure 3 yes Figure 2 A top view of

[0019] Figure 4 yes Figure 2 Cross-sectional view of AA;

[0020] Figure 5 yes Figure 4 Cross-sectional view of the middle BB;

[0021] Figure 6yes Figure 5 Cross-sectional view of CC;

[0022] Figure 7 This is a schematic diagram of the fully automatic miniaturized hydraulic turning device of the present invention;

[0023] In the figure: 1. Housing, 2. Mounting interface, 3. Ratchet, 4. Oil return port, 5. Oil inlet, 6. Oil inlet sealing section, 7. Valve stem, 8. Oil return sealing section, 9. Lubricating oil sealing section, 10. Oil return groove, 11. Return spring, 12. Internal sealing section, 13. Displacement sensor, 14. Oil inlet groove, 15. Observation window, 16. Solenoid reversing valve, 17. Manual reversing valve. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] like Figures 2 to 7 As shown, the main components of the fully automatic miniaturized hydraulic winch device of the present invention are integrated in the housing 1, and the whole is connected to the bearing seat through the mounting interface 2. The pawl 3 is built into the bearing seat and cooperates with the ratchet on the rotor to realize intermittent rotation of the rotor.

[0026] Housing 1 houses an inner cylinder sleeve, which houses a piston connected to valve stem 7. The upper end of valve stem 7 passes through the inner cylinder sleeve's top cover and is fixedly connected to a spring disc at the top. A return spring 11, sleeved on the outer surface of the inner cylinder sleeve, is installed between the spring disc and the bottom of housing 1. The lower end of valve stem 7 passes through the base of housing 1 and the mounting interface 2, where it connects to a pawl 3. The base of housing 1 is equipped with an oil inlet 5 and an oil return port 4. The oil inlet 5 connects to the upper oil chamber of the piston in valve stem 7 through an oil inlet groove 14 in the inner cylinder sleeve, while the oil return port 4 connects to the lower oil chamber of the piston in valve stem 7 through an oil return groove 10 in the base. An oil inlet seal 6 is installed between valve stem 7 and the inner cylinder sleeve's top cover, an oil return seal 8 is installed between valve stem 7 and the base of housing 1, and a lubricating oil seal 9 is installed between valve stem 7 and the mounting interface 2. The spring disc is connected to a displacement sensor 13 mounted on the side of housing 1 via a connector. An observation window 15 is provided in the connecting sleeve between the base of housing 1 and mounting interface 2.

[0027] The turning device of the present invention is provided with two oil ports, an oil inlet 5 and an oil return port 4. The oil inlet 5 is connected to the oil inlet groove 14 at the upper end through an internal oil passage, and the oil return port 4 is connected to the oil return groove 10 at the lower end through an internal oil passage.

[0028] To ensure the sealing of the turning mechanism, prevent leakage of high-pressure hydraulic oil, and prevent mixing of the high-pressure hydraulic oil with the lubricating oil in the bearing seat, three external sealing sections are installed: oil inlet sealing section 6, oil return sealing section 8, and lubricating oil sealing section 9. Oil return sealing section 8 and lubricating oil sealing section 9 are separated by a certain distance, and an observation window 15 is provided to effectively observe whether the sealing section has failed and replace the sealing parts in a timely manner. An internal sealing section 12 is installed between the valve stem 7 piston and the inner cylinder sleeve between the oil inlet groove 14 and the oil return groove 10 to prevent the high-pressure hydraulic oil in the chamber from directly connecting to the return oil, effectively ensuring the power output of the turning mechanism. Each sealing section consists of a sealing groove and a seal installed in the sealing groove.

[0029] A solenoid reversing valve 16 is installed in front of the oil inlet 5 of the turning mechanism. When energized, the oil inlet trough 14 receives high-pressure hydraulic oil. Driven by the differential pressure between the upper and lower oil levels, the valve stem 7 drives the pawl 3 downward, rotating the rotor to a certain angle. When the solenoid reversing valve 16 is de-energized, the oil inlet trough 14 receives return oil. Driven by the return spring 11, the valve stem 7 moves upward, disengaging the pawl from the ratchet and resetting it. The unit's control program is configured to periodically energize and de-energize the solenoid reversing valve 16 before and after startup, achieving fully automatic turning.

[0030] The displacement sensor 13 is externally mounted on the side of the housing 1. The stroke of the cranking device can be collected through the displacement sensor 13, and the displacement signal is integrated into the start-up control of the unit. When the stroke is at the lower end, the unit cannot be started. When fully automatic cranking is realized, the collision between the pawl and the ratchet can be effectively avoided, which may cause unit failure.

[0031] In order to further ensure safety, a manual reversing valve 17 is also provided in front of the oil inlet 5 of the turning device. In the event of a failure of the electromagnetic reversing valve 16, the manual reversing valve 17 can ensure that the oil inlet groove 14 is connected to the return oil. Under the action of the reset spring 11, the pawl is always at the top of the upper stroke, effectively avoiding the collision of the pawl and ratchet. At the same time, it will not affect the normal startup and operation of the unit in an emergency.

Claims

1. A fully automatic miniaturized hydraulic turning device, comprising a housing, a valve stem, and a pawl, characterized in that: The housing is provided with an inner cylinder sleeve, and the inner cylinder sleeve is fitted with a piston connected to a valve stem, the upper end of the valve stem passes through the inner cylinder sleeve top cover and is fixedly connected to the spring disk at the top, and the lower end of the valve stem passes through the base and mounting interface of the housing and is connected to a pawl; an oil inlet sealing section is provided between the valve stem and the inner cylinder sleeve top cover, an oil return sealing section is provided between the valve stem and the base of the housing, and a lubricating oil sealing section is provided between the valve stem and the mounting interface; an internal sealing section is provided between the valve stem piston and the inner cylinder sleeve; an oil inlet and an oil return port are provided on the base of the housing, the oil inlet is connected to the upper oil chamber of the valve stem piston through the oil inlet groove in the inner cylinder sleeve, and the oil return port is connected to the lower oil chamber of the valve stem piston through the oil return groove in the base; an electromagnetic reversing valve is provided in front of the oil inlet; a manual reversing valve is also provided in front of the oil inlet, and in the event of a failure of the electromagnetic reversing valve, the manual reversing valve can ensure that the oil inlet groove is connected to the return oil; a return spring sleeved on the outside of the inner cylinder sleeve is provided between the spring disk and the bottom of the housing.

2. The fully automatic miniaturized hydraulic turning device according to claim 1, characterized in that: The spring disk is connected to a displacement sensor installed on the side of the housing through a connecting piece.

3. The fully automatic miniaturized hydraulic turning device according to claim 1 is characterized in that: An observation window is provided on the connecting sleeve between the base of the shell and the installation interface.

4. The fully automatic miniaturized hydraulic turning device according to claim 1 is characterized in that: The fully automatic miniaturized hydraulic turning device is connected to the bearing seat through a mounting interface. The pawl is built into the bearing seat and cooperates with the ratchet on the rotor to realize intermittent rotation of the rotor.

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