Locking and limiting mechanism of hydraulic cylinder of heavy metallurgical equipment

Abstract

The locking and limiting mechanism of the hydraulic cylinder of the heavy metallurgical equipment comprises a cylinder barrel, one end of the cylinder barrel is movably connected with a piston rod in a penetrating mode, the circumferential outer wall of the piston rod is fixedly connected with an installation disc, the top end and the bottom end of the installation disc are both fixedly connected with connecting frames, and one ends of the two connecting frames are both fixedly connected with sliding seats. The outer walls of the two sides of the cylinder barrel are each fixedly connected with two fixing blocks, a positioning rod is fixedly connected between the two fixing blocks, and the sliding bases are connected to the corresponding positioning rods in a penetrating and sliding mode. Through the cooperative use of the clamping blocks and the bayonets, in order to prevent the piston rod from moving due to long-time static, the sliding rod is moved downwards to enable the clamping blocks to move downwards to be clamped into one bayonet, the sliding rod is locked at a certain position on the positioning rod, the piston rod is indirectly locked, relative sliding of the piston rod is prevented, and the service life of the piston rod is prolonged. Meanwhile, the locking mode is simple, and operation is flexible and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a locking and limiting mechanism of a hydraulic cylinder of heavy metallurgical equipment. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, a reduction device can be eliminated, and there is no transmission gap and the movement is smooth. Therefore, it is widely used in the hydraulic systems of various machines. When the piston rod of the hydraulic cylinder is extended for a long time, in order to ensure that the position of the piston rod is more stable, it is sometimes necessary to lock the position of the piston rod to prevent the piston rod from sliding. However, traditional locking methods are generally more complicated in structure, more cumbersome to operate, and not flexible and convenient enough. Therefore, technical personnel in this field provide a locking and limiting mechanism for a hydraulic cylinder of heavy metallurgical equipment to solve the problems raised in the above background technology. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a locking and limiting mechanism for a hydraulic cylinder of heavy metallurgical equipment.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A locking and limiting mechanism for a hydraulic cylinder of heavy metallurgical equipment comprises a cylinder barrel, one end of the cylinder barrel is movably connected with a piston rod, the circumferential outer wall of the piston rod is fixedly connected with a mounting plate, the top and bottom ends of the mounting plate are fixedly connected with connecting frames, one end of the two connecting frames are fixedly connected with a sliding seat, the outer walls on both sides of the cylinder barrel are fixedly connected with two fixed blocks, a positioning rod is fixedly connected between the two fixed blocks, the sliding seats are respectively slidably connected to the corresponding positioning rods, and the sliding seat is provided with a locking assembly connected to the positioning rod to lock the piston rod.

[0006] As a further solution of the utility model, the locking assembly includes a card block and a card slot, the sliding seat is movably connected with a sliding rod, the bottom end of the sliding rod is fixedly connected with a card block, and a plurality of card slots are evenly opened on the two positioning rods in sequence, and the card block is engaged with one of the card slots.

[0007] As a further solution of the utility model, one end of the two connecting frames is fixedly connected to a support block, the support block is fixedly connected to a first magnet, one end of the two sliding rods is fixedly connected to a second magnet, and the first magnet and the second magnet can be adsorbed.

[0008] As a further solution of the utility model, the circumferential outer walls of the two sliding rods are movably connected with springs, and the two ends of the springs are respectively fixed to the sliding rod and the sliding seat.

[0009] As a further solution of the utility model, one side of the cylinder barrel close to one end is fixedly connected to an oil inlet pipe, and one side of the cylinder barrel close to the other end is fixedly connected to an oil outlet pipe.

[0010] As a further solution of the utility model, the circumferential outer walls of the oil inlet pipe and the oil outlet pipe are movably connected with sealing rings, and the sealing rings are fixed to the cylinder barrel.

[0011] The beneficial effects of the utility model are:

[0012] By using the card block and the bayonet in coordination, in order to prevent the piston rod from moving when it is stationary for a long time, the slide bar is moved downward to make the card block move downward and fit into one of the bayonet holes, locking the slide bar at a certain position on the positioning rod, thereby indirectly locking the piston rod to prevent relative sliding of the piston rod. At the same time, the locking method is relatively simple, and the operation is flexible and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front side three-dimensional structural diagram of a locking and limiting mechanism of a hydraulic cylinder of heavy metallurgical equipment proposed by the utility model;

[0014] Figure 2 This is a rear three-dimensional structural schematic diagram of a locking and limiting mechanism of a hydraulic cylinder of heavy metallurgical equipment proposed by the utility model;

[0015] Figure 3 The utility model is a partial cross-sectional structural schematic diagram of a locking and limiting mechanism of a hydraulic cylinder of heavy metallurgical equipment.

[0016] In the figure: 1. cylinder barrel; 2. piston rod; 3. mounting plate; 4. connecting frame; 5. positioning rod; 6. sliding seat; 7. fixing block; 8. oil inlet pipe; 9. sealing ring; 10. oil outlet pipe; 11. first magnet; 12. second magnet; 13. spring; 14. sliding rod; 15. clamping block; 16. bayonet. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. It should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0018] Reference Figure 1-Figure 3 The locking and limiting mechanism of the hydraulic cylinder of heavy metallurgical equipment comprises a cylinder barrel 1, one end of the cylinder barrel 1 is slidably connected with a piston rod 2, and the circumferential outer wall key of the piston rod 2 is connected with a mounting plate 3. The top and bottom ends of the mounting plate 3 are fixed with a connecting frame 4 by bolts, and one end of the two connecting frames 4 is fixed with a slide seat 6 by bolts. The outer walls of both sides of the cylinder barrel 1 are fixed with two fixing blocks 7 by bolts, and a positioning rod 5 is fixed between the two fixing blocks 7 by bolts. The slide seats 6 are respectively slidably connected to the corresponding positioning rods 5, and a locking assembly connected to the positioning rod 5 is provided on the slide seat 6 to lock the piston rod 2. The piston rod 2 is extended to make the mounting plate 3 drive the connecting frame 4 to move, and the connecting frame 4 moves to make the slide seat 6 move along the circumferential outer wall of the positioning rod 5. After the piston rod 2 is extended to the specified position, in order to prevent the piston rod 2 from being stationary for a long time and moving, the slide seat 6, the connecting frame 4, the mounting plate 3 and the piston rod 2 are locked by the locking assembly.

[0019] In the utility model, the locking assembly includes a block 15 and a bayonet 16. A slide bar 14 is slidably connected to the slide seat 6. The bottom end of the slide bar 14 is fixed with a block 15 by bolts. A plurality of bayonet 16 are evenly opened on the two positioning rods 5 in sequence. The block 15 is clamped with one of the bayonet 16. One end of the two connecting frames 4 is fixed with a support block by bolts. The support block is fixed with a first magnet 11 by bolts. One end of the two slide bars 14 is fixed with a second magnet 12 by bolts, and the first magnet 11 and the second magnet 12 can be adsorbed. The outer circumferential walls of the two slide bars 14 are sleeved with springs 13, and the springs are The two ends of the spring 13 are fixed to the slide bar 14 and the slide seat 6 respectively, and the slide bar 14 is moved upward, and the slide bar 14 moves upward to disengage the block 15 from the bayonet 16. At the same time, the spring 13 is stretched by force, and after the slide bar 14 moves upward to a certain position, the second magnet 12 and the first magnet 11 are attracted to each other, thereby temporarily fixing the slide bar 14. After the piston rod 2 moves and stretches to a specified position, the slide bar 14 is moved downward to disengage the second magnet 12 from the first magnet 11, and then the spring 13 is reset to make the slide bar 14 continue to move downward, and the block 15 moves downward and is inserted into one of the bayonet 16, so that the slide bar 14 is locked.

[0020] In the utility model, one side of the cylinder 1 near one end is fixedly connected with an oil inlet pipe 8, and one side of the cylinder 1 near the other end is fixedly connected with an oil outlet pipe 10, through which the hydraulic oil can be easily refluxed and depressurized.

[0021] In the utility model, the circumferential outer walls of the oil inlet pipe 8 and the oil outlet pipe 10 are sleeved with sealing rings 9, and the sealing rings 9 are fixed to the cylinder barrel 1.

[0022] Working principle: during use, when the piston rod 2 needs to be extended, the slide bar 14 is moved upward, and the slide bar 14 moves upward to disengage the block 15 from the bayonet 16. At the same time, the spring 13 is stretched by force. After the slide bar 14 moves upward to a certain position, the second magnet 12 and the first magnet 11 are attracted to each other, thereby temporarily fixing the slide bar 14. Then the piston rod 2 is extended to make the mounting plate 3 drive the connecting frame 4 to move, and the connecting frame 4 moves to make the slide seat 6 move along the circumferential outer wall of the positioning rod 5. After the piston rod 2 is extended to the specified position, in order to prevent the piston rod 2 from being stationary for a long time and moving, the user moves the slide bar 14 downward to disengage the second magnet 12 from the first magnet 11. Then the spring 13 is reset to make the slide bar 14 continue to move downward, and the block 15 moves downward and is clamped into one of the bayonet holes 16, thereby locking the slide bar 14 at a certain position on the positioning rod 5, thereby locking the slide seat 6, the connecting frame 4, the mounting plate 3 and the piston rod 2.

[0023] In this application, structures and connection relationships that are not described in detail are all prior arts, and their structures and principles are well-known technologies and will not be described in detail here.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A locking and limiting mechanism for a hydraulic cylinder of heavy metallurgical equipment, comprising a cylinder barrel (1), characterized in that: One end of the cylinder barrel (1) is movably connected with a piston rod (2), the circumferential outer wall of the piston rod (2) is fixedly connected with a mounting plate (3), the top and bottom ends of the mounting plate (3) are fixedly connected with a connecting frame (4), one end of the two connecting frames (4) are fixedly connected with a slide seat (6), the outer walls on both sides of the cylinder barrel (1) are fixedly connected with two fixed blocks (7), a positioning rod (5) is fixedly connected between the two fixed blocks (7), the slide seats (6) are respectively slidably connected to the corresponding positioning rods (5), and the slide seats (6) are provided with a locking assembly connected to the positioning rod (5) to lock the piston rod (2).

2. The locking and limiting mechanism of the hydraulic cylinder of heavy metallurgical equipment according to claim 1 is characterized in that: The locking assembly comprises a clamping block (15) and a clamping slot (16); a sliding rod (14) is movably connected to the sliding seat (6); the bottom end of the sliding rod (14) is fixedly connected to the clamping block (15); a plurality of clamping slots (16) are uniformly arranged on the two positioning rods (5); and the clamping block (15) is clamped with one of the clamping slots (16).

3. The locking and limiting mechanism of the hydraulic cylinder of heavy metallurgical equipment according to claim 2 is characterized in that: One end of the two connecting frames (4) is fixedly connected to a support block, and the support block is fixedly connected to a first magnet (11). One end of the two sliding rods (14) is fixedly connected to a second magnet (12), and the first magnet (11) and the second magnet (12) can be adsorbed.

4. The locking and limiting mechanism of a hydraulic cylinder of heavy metallurgical equipment according to claim 2 is characterized in that: The circumferential outer walls of the two sliding rods (14) are movably connected with springs (13), and the two ends of the springs (13) are respectively fixed to the sliding rods (14) and the sliding seat (6).

5. The locking and limiting mechanism of the hydraulic cylinder of heavy metallurgical equipment according to claim 1 is characterized in that: A side of the cylinder barrel (1) close to one end is fixedly connected to an oil inlet pipe (8), and a side of the cylinder barrel (1) close to the other end is fixedly connected to an oil outlet pipe (10).

6. The locking and limiting mechanism of the hydraulic cylinder of heavy metallurgical equipment according to claim 5, characterized in that: The circumferential outer walls of the oil inlet pipe (8) and the oil outlet pipe (10) are both movably connected with a sealing ring (9), and the sealing ring (9) is fixed to the cylinder barrel (1).

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