Air-cut self-locking mechanism of air cylinder

Abstract

The utility model discloses an air cylinder air-cut self-locking mechanism which comprises a rear end cover, a cylinder barrel and a front end cover, the rear end cover and the front end cover are fixedly connected to the two ends of the cylinder barrel respectively, a piston head is connected into the cylinder barrel in a sliding mode, a piston rod is integrally formed at one end of the piston head and penetrates through the front end cover, and the piston rod is connected with the front end cover. An air inlet component pushing the piston head to move is arranged in the rear end cover, an elastic component enabling the piston head to reset after moving is arranged in the cylinder barrel, an annular groove is formed in the position, close to the piston head, of the outer side of the piston rod, a sliding groove is formed in the side, close to the cylinder barrel, of the front end cover, and an L-shaped frame is slidably connected into the sliding groove. The L-shaped frame extends into the cylinder barrel and is connected with the annular groove in an inserted mode. According to the self-locking air cylinder, the piston rod can be self-locked after air of the air cylinder is cut off, the piston rod is prevented from sliding off under the action of the gravity of an object, the use safety of the air cylinder is improved, the air cylinder can be conveniently used, and the use convenience of the air cylinder is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder self-locking, in particular to a cylinder gas cut-off self-locking mechanism. Background Art

[0002] A cylinder is a cylindrical metal part that guides a piston to perform linear reciprocating motion within the cylinder. There are two types of cylinders: those that perform linear reciprocating motion and those that perform reciprocating oscillating motion.

[0003] After searching, the announcement number CN217301102U discloses a new type of single-acting cylinder. This cylinder does not have a self-locking function when the air is cut off. Once the air supply stops or the air supply is abnormal, the piston rod can easily slip under the action of gravity, causing an accident. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a cylinder gas cut-off self-locking mechanism.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The cam is secured to the front of the cylinder and has an angular channel formed between the end of the cam and the side of the cylinder to allow the cylinder to move forwards and backward when the cam is in a state of emergency.

[0007] As a further solution of the present invention, the air intake component is a first L-shaped air duct, which is opened in the rear end cover, one end of the first L-shaped air duct is connected to the cylinder, the other end of the first L-shaped air duct is open upward, and the pneumatic joint is connected to the first L-shaped air duct.

[0008] As a further solution of the present invention, the elastic component is a spring, the spring is arranged in the cylinder, and the two ends of the spring are respectively fixed to the rear end cover and the piston head.

[0009] As a further solution of the present invention, the blowing assembly includes a second L-shaped air duct, which is opened in the front end cover, one end of the second L-shaped air duct is connected to the slide groove, the other end of the second L-shaped air duct is open upward, and the pneumatic joint is connected to the second L-shaped air duct, and the bottom of the L-shaped frame is fixedly connected to a cylinder, and the cylinder is inserted into the second L-shaped air duct.

[0010] As a further solution of the present invention, the magnetic assembly includes a second magnetic block, which is embedded in the top of the L-shaped frame. The top of the slide groove is embedded with a first magnetic block, and the first magnetic block and the second magnetic block repel each other.

[0011] As a further solution of the present invention, a plurality of tie rods are provided between the rear end cover and the front end cover, and the cylinder is located between the plurality of tie rods.

[0012] As a further solution of the present invention, a fixing frame is fixedly connected to one side of the rear end cover and the front end cover in opposite directions, and two mounting holes are provided at the bottom of the fixing frame.

[0013] The beneficial effects of the utility model are:

[0014] 1. Through the coordinated use of the L-shaped frame and the annular groove, the piston rod will be driven to move when the piston head moves in the cylinder. When the piston rod moves to a certain position, the L-shaped frame is inserted into the annular groove under the action of the magnetic component to fix the piston rod. In this way, the piston rod can be self-locked after the cylinder is cut off from the air, preventing the piston rod from sliding down under the action of the object's gravity, thereby improving the safety of the cylinder.

[0015] 2. Through the setting of the elastic component, when the cylinder is used up, the elastic component can pull the piston head to reset and move, so that the cylinder is restored, thereby facilitating the use of the cylinder and improving the convenience of using the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front side three-dimensional structural diagram of a cylinder gas cut-off self-locking mechanism proposed in the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of a cylinder barrel of a cylinder gas cut-off self-locking mechanism proposed in the utility model;

[0018] Figure 3 This is an enlarged structural diagram of part A of a cylinder gas cut-off self-locking mechanism proposed in the utility model.

[0019] In the figure: 1. Rear end cover; 2. Cylinder; 3. Pneumatic joint; 4. Front end cover; 5. Piston rod; 6. Fixing bracket; 7. Mounting hole; 8. Pull rod; 9. Piston head; 10. Spring; 11. First L-shaped air channel; 12. First magnetic block; 13. Second L-shaped air channel; 14. Slide groove; 15. Cylinder; 16. Annular groove; 17. L-shaped frame; 18. Second magnetic block. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field without making creative work are all within the scope of protection of the present invention.

[0021] Reference Figure 1-Figure 3 , a cylinder gas cut-off self-locking mechanism, including a rear end cover 1, a cylinder barrel 2 and a front end cover 4, the rear end cover 1 and the front end cover 4 are respectively welded to the two ends of the cylinder barrel 2, a piston head 9 is slidably connected in the cylinder barrel 2, one end of the piston head 9 is integrally formed with a piston rod 5, and the piston rod 5 passes through the front end cover 4, an intake component for pushing the piston head 9 to move is provided in the rear end cover 1, an elastic component for resetting the piston head 9 after movement is provided in the cylinder barrel 2, an annular groove 16 is provided on the outer side of the piston rod 5 near the piston head 9, a slide groove 14 is provided on the side of the front end cover 4 near the cylinder barrel 2, an L-shaped frame 17 is slidably connected in the slide groove 14, and the L-shaped frame 17 extends into the cylinder barrel 2 and is plugged into the annular groove 16, and a front end cover 4 is provided to The L-shaped frame 17 is an air blowing component that moves upward. The tops of the rear end cover 1 and the front end cover 4 are both provided with pneumatic joints 3. A magnetic component that enables the L-shaped frame 17 to move is provided in the slide groove 14. Air is introduced into the cylinder 2 through the air intake component. At this time, the piston head 9 is pushed to move under the action of air pressure, and the piston head 9 drives the piston rod 5 to move. When the piston rod 5 moves to the annular groove 16 and is aligned with the L-shaped frame 17, the L-shaped frame 17 is moved under the action of the magnetic component so that the L-shaped frame 17 is inserted into the annular groove 16, thereby fixing the piston rod 5. After the cylinder is de-energized, the piston rod 5 is self-locked to prevent the piston rod 5 from sliding down under the action of gravity, thereby improving the safety of the cylinder.

[0022] In the present invention, the air intake component is a first L-shaped air passage 11, which is opened in the rear end cover 1, one end of the first L-shaped air passage 11 is connected to the cylinder 2, and the other end of the first L-shaped air passage 11 is open upward, and the pneumatic joint 3 is connected to the first L-shaped air passage 11. When in use, air is blown into the first L-shaped air passage 11 through the pneumatic joint 3 on the rear end cover 1, and the gas enters the cylinder 2 through the first L-shaped air passage 11. The elastic component is a spring 10, which is set in the cylinder 2. The two ends of the spring 10 are respectively fixed to the rear end cover 1 and the piston head 9. When the piston head 9 pushed by the air pressure moves, the piston head 9 will stretch the spring 10. The blowing component includes a second L-shaped air passage 13, a second L-shaped air passage 14, and a second L-shaped air passage 15. The air passage 13 is opened in the front cover 4, one end of the second L-shaped air passage 13 is connected to the slide groove 14, the other end of the second L-shaped air passage 13 is upwardly open, and the pneumatic joint 3 is connected to the second L-shaped air passage 13, and a cylinder 15 is welded to the bottom of the L-shaped frame 17, and the cylinder 15 is inserted into the second L-shaped air passage 13. When the cylinder is used up, air is blown into the second L-shaped air passage 13 through the pneumatic joint 3 on the front cover 4. At this time, the air pressure will push the cylinder 15 to move out of the second L-shaped air passage 13, and the cylinder 15 will push the L-shaped frame 17 to move in the slide groove 14, so that the L-shaped frame 17 is separated from the annular groove 16. At this time, under the action of the spring 10, the piston head 9 will be pulled to reset, thereby resetting the piston rod 5;

[0023] In particular, the magnetic assembly includes a second magnetic block 18, which is embedded in the top of the L-shaped frame 17, and the top of the slide groove 14 is embedded with the first magnetic block 12, and the first magnetic block 12 and the second magnetic block 18 repel each other. When the annular groove 16 on the piston rod 5 moves to align with the L-shaped frame 17, the first magnetic block 12 and the second magnetic block 18 repel each other. Therefore, under the action of the first magnetic block 12 and the second magnetic block 18, the L-shaped frame 17 will move so that the L-shaped frame 17 is inserted into the annular groove 16. At the same time, under the action of the first magnetic block 12 and the second magnetic block 18, the L-shaped frame 17 will be stably inserted into the annular groove 16. A plurality of pull rods 8 are provided between the rear end cover 1 and the front end cover 4, and the cylinder barrel 2 is located between the plurality of pull rods 8. The rear end cover 1 and the front end cover 4 are fixed to a fixing frame 6 on the opposite side by bolts, and two mounting holes 7 are provided at the bottom of the fixing frame 6.

[0024] Working principle: When it is needed, air is blown into the first L-shaped air channel 11 through the pneumatic connector 3 on the rear end cover 1, and the gas enters the cylinder 2 through the first L-shaped air channel 11. At this time, the piston head 9 is pushed to move under the action of air pressure, and the piston head 9 drives the piston rod 5 to move. The piston head 9 will stretch the spring 10 during the movement. When the annular groove 16 on the piston rod 5 moves to be aligned with the L-shaped frame 17, the first magnetic block 12 and the second magnetic block 18 repel each other. Therefore, under the action of the first magnetic block 12 and the second magnetic block 18, the L-shaped frame 17 will move and be inserted into the annular groove 16, thereby fixing the piston rod 5. After the cylinder is cut off from air, the piston rod 5 will be self-locked to prevent the piston rod 5 from sliding under the action of gravity, thereby improving the safety of the cylinder.

[0025] Furthermore, the terms "installed," "disposed," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

Claims

1. A cylinder gas shut-off self-locking mechanism, comprising a rear end cover (1), a cylinder barrel (2) and a front end cover (4), wherein the rear end cover (1) and the front end cover (4) are respectively fixedly connected to the two ends of the cylinder barrel (2), and characterized in that: The cylinder (2) is slidably connected to a piston head (9), one end of the piston head (9) is integrally formed with a piston rod (5), and the piston rod (5) passes through the front end cover (4), the rear end cover (1) is provided with an air intake component for pushing the piston head (9) to move, the cylinder (2) is provided with an elastic component for returning the piston head (9) to its original position after movement, an annular groove (16) is provided on the outer side of the piston rod (5) near the piston head (9), the front end cover (4) is provided with a slide groove (14) on the side near the cylinder (2), an L-shaped frame (17) is slidably connected to the slide groove (14), and the L-shaped frame (17) extends into the cylinder (2) and is plugged into the annular groove (16), the front end cover (4) is provided with an air blowing component for moving the L-shaped frame (17) upward, the tops of the rear end cover (1) and the front end cover (4) are both provided with pneumatic joints (3), and the slide groove (14) is provided with a magnetic component for moving the L-shaped frame (17).

2. A cylinder gas shut-off self-locking mechanism according to claim 1, characterized in that: The air intake component is a first L-shaped air duct (11), which is opened in the rear end cover (1), one end of the first L-shaped air duct (11) is connected to the cylinder (2), the other end of the first L-shaped air duct (11) is open upward, and the pneumatic joint (3) is connected to the first L-shaped air duct (11).

3. The cylinder gas shut-off self-locking mechanism according to claim 1, characterized in that: The elastic component is a spring (10), which is arranged in the cylinder (2), and the two ends of the spring (10) are respectively fixed to the rear end cover (1) and the piston head (9).

4. The cylinder gas shut-off self-locking mechanism according to claim 2, characterized in that: The blowing assembly includes a second L-shaped air duct (13), the second L-shaped air duct (13) is opened in the front end cover (4), one end of the second L-shaped air duct (13) is connected to the slide groove (14), the other end of the second L-shaped air duct (13) is open upward, and the pneumatic joint (3) is connected to the second L-shaped air duct (13), and the bottom of the L-shaped frame (17) is fixedly connected to a cylinder (15), and the cylinder (15) is inserted into the second L-shaped air duct (13).

5. The cylinder gas shut-off self-locking mechanism according to claim 1, characterized in that: The magnetic assembly includes a second magnetic block (18), the second magnetic block (18) is embedded in the top of the L-shaped frame (17), the top of the slide groove (14) is embedded with the first magnetic block (12), and the first magnetic block (12) and the second magnetic block (18) repel each other.

6. The cylinder gas shut-off self-locking mechanism according to claim 1, characterized in that: A plurality of tie rods (8) are provided between the rear end cover (1) and the front end cover (4), and the cylinder (2) is located between the plurality of tie rods (8).

7. The cylinder gas shut-off self-locking mechanism according to claim 6, characterized in that: A fixing frame (6) is fixedly connected to one side of the rear end cover (1) and the front end cover (4) in opposite directions, and two mounting holes (7) are provided at the bottom of the fixing frame (6).

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