A spring hydraulic locking mechanism

Abstract

The present invention discloses a spring hydraulic locking mechanism, comprising a hydraulic lock body, a lock head guide seat, a lock head, a piston rod, a guide sleeve, an end cover, a spring seat, a spring group and a muffler. The present invention integrates the hydraulic cylinder and the locking mechanism into a whole, and utilizes the spring to achieve the purpose of oil leakage locking. The present invention is convenient for installation in a small space, and can avoid the laying of electrical equipment such as on-site travel switches, thereby reducing the amount of construction. The present invention has the characteristics of compact structure, flexible layout and high reliability.

Description

Technical Field

[0001] The invention belongs to a locking mechanism, and in particular relates to a spring hydraulic locking mechanism. Background Art

[0002] At present, after a marine hatch cover or manhole cover is closed, a locking mechanism is generally used to lock it to ensure the safety and sealing of the hatch cover or manhole cover after it is closed. However, the locking mechanism is large in size and requires a high installation space. At the same time, a travel switch is required to detect the position of the lock head to determine whether the locking mechanism is in the unlocked state or the locked state. The structure is complex and the installation and removal are time-consuming and labor-intensive. Summary of the Invention

[0003] In view of the deficiencies in the prior art, an object of the present invention is to provide a spring hydraulic locking mechanism.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A spring hydraulic locking mechanism includes a hydraulic lock body, a lock guide seat, a lock, a piston rod, a guide sleeve, an end cover, a spring seat, a spring group and a muffler, wherein the spring group includes an inner ring spring and an outer ring spring; a lock guide seat is fixedly installed at the front end of the hydraulic lock body, and the lock body is installed in the lock guide seat. The lock body is cylindrical, the front end of the lock is a wedge-shaped inclined surface, and the rear end of the lock has a semi-annular groove. A piston cylinder is arranged in the hydraulic lock body at the rear of the lock guide seat, and an oil nozzle is provided on each side of the piston cylinder. The front end of the piston cylinder has an internal thread, the end cover is threadedly connected to the front end of the piston cylinder, a through hole is provided in the center of the end cover, the rear end of the piston cylinder also has an internal thread, the spring seat is threadedly connected to the rear end of the piston cylinder, the inner ring spring and the outer ring spring are installed in the spring seat, and the tail of the spring seat is provided with There is a muffler, a guide sleeve and a piston rod are installed in the piston cylinder, the front end of the guide sleeve is in contact with the end cover, the piston rod is located at the rear of the guide sleeve, the piston rod is a stepped shaft structure, the rear of the piston rod is the piston, a plurality of annular grooves are provided on the cylindrical surface of the piston, a guide ring and a sealing ring are installed in the annular groove, the rear end face of the piston is provided with an annular groove, one end of the inner ring spring and one end of the outer ring spring are simultaneously located in the annular groove, the piston rod passes through the guide sleeve and enters the lock guide seat, the front end of the piston rod is provided with an annular groove in the circumferential direction, the annular groove and the semi-annular groove at the rear end of the lock are nested with each other, the front end face of the piston rod is a spherical surface, and the front end face of the piston rod is connected to the rear end face of the lock; the opening of the oil nozzle in the piston cylinder is located between the guide sleeve and the piston at the rear of the piston rod.

[0006] Four mounting holes are provided on the bottom flange surface of the hydraulic lock body.

[0007] An adjusting gasket is arranged between the lock head guide seat and the hydraulic lock body.

[0008] The inclination of the wedge-shaped slope at the front end of the lock head is 5±1 degrees.

[0009] Among the oil nozzles on both sides of the piston cylinder, one of them is passed with hydraulic oil, and the other oil nozzle is blocked with a plug.

[0010] A groove is provided on the inner wall of the end cover, and a guide ring and a dust ring are installed in the groove.

[0011] The present invention integrates the hydraulic cylinder and the locking mechanism into a whole, and uses a spring to achieve the purpose of oil leakage locking. It is easy to install in a small space, avoids the laying of electrical equipment such as on-site travel switches, reduces the construction workload, and has the characteristics of compact structure, flexible layout and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention.

[0013] Figure 2 It is a longitudinal sectional view of the present invention.

[0014] In the figure, 1 is the hydraulic lock body, 2 is the spring seat, 3 is the muffler, 4 is the plug, 5 is the lock guide seat, 6 is the lock, 7 is the adjustment gasket, 8 is the end cover, 9 is the guide sleeve, 10 is the piston rod, 11 is the outer ring spring, 12 is the inner ring spring, 13 is the dust ring, 14 is the guide ring, 15 is the sealing ring, and 16 is the O-ring. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0016] like Figure 1 、 Figure 2The figure shows a spring hydraulic locking mechanism comprising a hydraulic lock body 1, a lock guide seat 5, a lock head 6, a piston rod 10, a guide sleeve 9, an end cap 8, a spring seat 2, a spring assembly, and a muffler 3. The spring assembly comprises an inner spring 12 and an outer spring 11. The lower surface of the flange at the bottom of the hydraulic lock body 1 serves as a mounting surface, with four mounting holes provided on the flange. The lock guide seat 5 is threadedly secured to the front mounting surface of the hydraulic lock body 1. An adjustment shim 7 is installed between the lock guide seat 5 and the hydraulic lock body 1. The height of the adjustment shim 7 is adjusted to ensure that the inner hole of the lock guide seat is coaxial with the piston cylinder of the hydraulic lock body. The lock head 6 is mounted within the lock guide seat 5. The main body of the lock head 6 is cylindrical, with a semi-annular groove at the rear end. The front end of the lock head 6 has a wedge-shaped slope with an inclination angle α of 5±1 degrees. When locked, it mates with the slope on the door frame structure to achieve self-locking. There is a piston cylinder in the hydraulic lock body at the rear of the lock guide seat 5. There is an oil nozzle on each side of the piston cylinder. When in use, the oil nozzle on one side is blocked with a plug 4 as needed, and the oil nozzle on the other side is passed through the hydraulic oil. The front end of the piston cylinder has an internal thread, and the end cover 8 is threadedly connected to the front end of the piston cylinder. There is a through hole in the center of the end cover. The rear end of the piston cylinder also has an internal thread. The spring seat 2 is threadedly connected to the rear end of the piston cylinder. The spring seat is equipped with an inner coil spring 12 and an outer coil spring 11. A threaded hole is set at the tail of the spring seat 2 and a muffler 3 is installed. A guide sleeve 9 and a piston rod 10 are installed in the piston cylinder. The front end of the guide sleeve 9 is in contact with the end cover. The piston rod 10 is located at the rear of the guide sleeve. The piston rod 10 is a stepped shaft structure and is processed in one piece. The slightly thicker end at the rear of the piston rod is the piston, which can move along the axial direction of the piston cylinder. There are several holes on the cylindrical surface of the piston. The annular groove houses guiding and sealing elements such as a guide ring and a sealing ring, providing guidance and sealing during extension and retraction. The rear end of the piston is provided with an annular groove, within which one end of the inner spring 12 and one end of the outer spring 11 reside. The piston rod 10 passes through the guide sleeve 9 and enters the lock guide seat 5. The front end of the piston rod 10 is provided with an annular groove in the circumferential direction, which nests with the semi-annular groove at the rear end of the lock 6. When the piston rod 10 retracts, the nested structure transmits tension, driving the lock 6 to retract and unlock. When the piston rod 10 extends, it pushes the lock 6 to extend and lock. The front end of the piston rod 10 is spherical. When the piston rod 10 pushes the lock 6 to extend, the piston rod's spherical surface contacts the center of the lock end face, allowing for some radial deflection of the lock 6 and preventing it from getting stuck due to uneven pushing force. The oil nozzle's opening in the piston cylinder is located between the guide sleeve 9 and the piston at the rear of the piston rod 10.

[0017] The inner hole surface of the lock guide seat 5 is processed smoothly to guide the lock 6 and the piston rod 10.

[0018] The guide sleeve 9 is installed in the piston cylinder of the hydraulic lock body and is positioned by the shaft shoulder. The inner and outer walls of the guide sleeve 9 are processed to be smooth. The inner wall is provided with a groove for installing the guide ring 14 and the sealing ring 15, and the outer wall is provided with a groove for installing the O-ring 16.

[0019] The end cover 8 is installed on the front end of the hydraulic lock body piston cylinder through threads. After the end cover 8 is tightened, it is pressed against the end face of the guide sleeve 9. The inner wall of the end cover 8 is processed to be smooth, and grooves are provided on the inner wall to install the guide ring 14 and the dust ring 13.

[0020] The outer ring spring 11 and the inner ring spring 12 can be selected from corresponding springs according to the required locking force, spring compression amount and installation length.

[0021] The muffler 3 is screwed and fixed to the rear end surface of the spring seat 2. When the piston rod 10 moves, external air is allowed to enter and exit the spring seat 2 through the muffler 3, while effectively suppressing noise transmission.

[0022] During use, when hydraulic oil is applied to the nozzle on the hydraulic lock's piston cylinder, the piston rod, under the action of the oil pressure, overcomes the pressure of the rear spring assembly, driving the lock head to retract and unlock. When hydraulic oil is released from the hydraulic lock's piston cylinder port, the piston rod, under the action of the rear spring assembly, drives the lock head to extend. The approximately 5-degree wedge-shaped slope at the front of the lock head engages with the slope on the door frame structure, achieving a self-locking locking function. A muffler is mounted on the rear spring seat to isolate dust and suppress noise transmission. The present invention integrates the hydraulic cylinder and locking mechanism into a single unit, utilizing a spring to achieve oil-release locking. This facilitates installation in confined spaces and eliminates the need for on-site electrical equipment such as travel switches, reducing construction effort. The invention features a compact structure, flexible layout, and high reliability. By adjusting the number and arrangement of spring-loaded hydraulic locking mechanisms according to the size of the locked object and different locking requirements, it can meet the closing and locking requirements of various hatch covers and well covers. The invention has been applied to a full-process simulation test platform for aircraft carrier-based weapon support systems.

[0023] The present invention discloses a spring hydraulic locking mechanism, comprising a hydraulic lock body, a lock head guide seat, a lock head, a piston rod, a guide sleeve, an end cover, a spring seat, a spring group and a muffler. The present invention integrates the hydraulic cylinder and the locking mechanism into a whole, and utilizes the spring to achieve the purpose of oil leakage locking. The present invention is convenient for installation in a small space, and can avoid the laying of electrical equipment such as on-site travel switches, thereby reducing the amount of construction. The present invention has the characteristics of compact structure, flexible layout and high reliability.

Claims

1. A spring hydraulic locking mechanism, comprising a hydraulic lock body, characterized in that: The hydraulic lock body is provided with a lock guide seat, a lock, a piston rod, a guide sleeve, an end cover, a spring seat, a spring group and a muffler, wherein the spring group includes an inner ring spring and an outer ring spring; the front end of the hydraulic lock body is fixedly provided with a lock guide seat, the lock body is installed in the lock guide seat, the lock body is cylindrical, the front end of the lock is a wedge-shaped inclined surface, and the rear end of the lock has a semi-annular groove, and a piston cylinder is provided in the hydraulic lock body at the rear of the lock guide seat, with an oil nozzle on each side of the piston cylinder, an internal thread at the front end of the piston cylinder, an end cover is threadedly connected to the front end of the piston cylinder, a through hole is provided in the center of the end cover, the rear end of the piston cylinder also has an internal thread, a spring seat is threadedly connected to the rear end of the piston cylinder, an inner ring spring and an outer ring spring are installed in the spring seat, a muffler is installed at the tail of the spring seat, and a piston cylinder is provided. It is equipped with a guide sleeve and a piston rod, the front end of the guide sleeve contacts the end cover, the piston rod is located at the rear of the guide sleeve, the piston rod is a stepped shaft structure, the rear of the piston rod is a piston, there are several annular grooves on the cylindrical surface of the piston, guide rings and sealing rings are installed in the annular grooves, the rear end face of the piston is provided with an annular groove, one end of the inner ring spring and one end of the outer ring spring are simultaneously located in the annular grooves, the piston rod passes through the guide sleeve and enters the lock guide seat, the front end of the piston rod is provided with an annular groove in the circumferential direction, the annular groove and the semi-annular groove at the rear end of the lock are nested with each other, the front end face of the piston rod is a spherical surface, and the front end face of the piston rod is connected to the rear end face of the lock; the opening of the oil nozzle in the piston cylinder is located between the guide sleeve and the piston at the rear of the piston rod.

2. The spring hydraulic locking mechanism according to claim 1, characterized in that: Four mounting holes are provided on the bottom flange surface of the hydraulic lock body.

3. The spring hydraulic locking mechanism according to claim 1, characterized in that: An adjusting gasket is arranged between the lock head guide seat and the hydraulic lock body.

4. The spring hydraulic locking mechanism according to claim 1, characterized in that: The inclination of the wedge-shaped slope at the front end of the lock head is 5±1 degrees.

5. The spring hydraulic locking mechanism according to claim 1, characterized in that: Among the oil nozzles on both sides of the piston cylinder, one of them is passed with hydraulic oil, and the other oil nozzle is blocked with a plug.

6. The spring hydraulic locking mechanism according to claim 1, characterized in that: A groove is provided on the inner wall of the end cover, and a guide ring and a dust ring are installed in the groove.

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