Cylinder capable of converting linear motion into rotary motion
By introducing U-shaped guide rails and rack structures into the cylinder, the problems of unstable cylinder swing speed and uneven force are solved, and stable swing and uniform force are achieved, which improves the performance of the equipment.
Patent Information
- Application Number
- CN202422356721.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-26
AI Technical Summary
When the existing cylinder pushes the parts that need to be swung, the swing speed is unstable, the stress is uneven and the vibration is large, which increases costs and reduces reliability.
The U-shaped guide rail and rack structure are adopted, and the linear conversion and rotational movement of the cylinder is realized through the meshing transmission between the rack and the gear, ensuring the stability of the swing speed and the uniformity of the force.
When the cylinder pushes the parts that need to be swung, the swing speed is stable and the force is uniform, which improves the performance of the equipment.
Smart Images
Figure CN223089666U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cylinders, in particular to a cylinder for converting linear motion into rotary motion. Background Technique
[0002] A cylinder is usually a mechanism for reciprocating linear motion, with a simple structure and low maintenance cost. It is widely used in equipment and has extensive applications in fields such as machinery, automation, aerospace, etc. It is an important transmission component for realizing automatic control and precise motion. When selecting a cylinder, factors such as load, stroke, and speed need to be considered to meet the actual application requirements.
[0003] In the existing related technologies, the following defects often exist: In some occasions, when the cylinder pushes a part that needs to swing, the swinging speed is unstable, the force is uneven during swinging, and the vibration is large. Using a motor to drive the rotation instead increases the cost investment and reduces the reliability.
[0004] Therefore, the utility model provides a cylinder for converting linear motion into rotary motion. Content of the Utility Model
[0005] The purpose of the utility model is to solve the defect that the swinging speed is unstable when the existing cylinder pushes a part that needs to swing, and a cylinder for converting linear motion into rotary motion is proposed.
[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A cylinder for converting linear motion into rotary motion includes a U-shaped guide rail, a main cylinder, and a rack. The rack is assembled on the U-shaped guide rail. The U-shaped guide rail has a U-shaped structure. A guide rail is provided inside the U-shaped guide rail, and mounting screw holes are provided on the back side of the guide rail for assembling the rack. The main cylinder includes a piston rod assembly, a guide rod, a front end cover, a cylinder body, a bearing, a sliding groove, and a rear end cover. One end of the piston rod assembly and the guide rod is connected to the U-shaped guide rail. The sliding groove is installed on both sides of the cylinder body and fastened with screws. The sliding groove is assembled with the guide rail inside the U-shaped guide rail, and the guide rail slides in the sliding groove.
[0007] Preferably, the other end of the guide rod is connected to the bearing, the bearing is embedded in the cylinder body, multiple bearings are configured on the guide rod, the guide rod slides linearly with the bearing, and the U-shaped guide rail has high directivity.
[0008] Preferably, the piston rod assembly includes a piston rod body, a piston body, an O-ring, and a nut. One end of the piston rod body is connected to the U-shaped guide rail, the other end of the piston rod body is connected to the piston body, and the nut fastens the piston body on the piston rod body.
[0009] Preferably, the piston body includes a first guide ring, a first seal, and a second seal. When the piston body moves in the cylinder, the first guide ring and the first seal play a guiding and sealing role respectively. There is a circular groove on one side of the piston body, and a raised ring on the other side of the piston body. The first seal is inlaid on one side of the piston body ring. When the piston body contacts the rear end cover, the piston body obtains buffering under the action of the first seal.
[0010] Preferably, the rear end cover includes a rear cylinder head and a first O-ring. The rear end cover is fastened to the cylinder block with screws. The rear end cover and the cylinder block are separated by the first O-ring. There is a round hole on one side of the cylinder head. When the piston body moves towards and contacts the rear end cover, a sealed cavity is formed between one side of the piston body ring and the round hole of the cylinder head under the sealing action of the first seal, and the piston body obtains buffering when it moves.
[0011] Preferably, the front end cover includes a first sealing ring, a front cylinder head, a second guide ring, a second sealing ring, a second O-ring, and a third sealing ring. When the piston rod body reciprocates, the first sealing ring plays a role in dust prevention and sealing. The second guide ring has a better guiding effect on the piston rod body. There is a raised ring on the side of the front cylinder head facing the piston body. The inner and outer circles of the ring are inlaid with the second sealing ring and the third sealing ring respectively. When the piston body moves relative to the front cylinder head until a circular groove on one side of the piston body contacts the front cylinder head, the second sealing ring and the third sealing ring can form a sealed cavity between one side of the raised ring of the front cylinder head and one side of the circular groove of the piston body, so that the piston body obtains a buffering effect.
[0012] In summary:
[0013] In the present invention, under the action of external compressed air, the piston rod pushes the U-shaped guide rail to reciprocate. The rack is installed on the outer side of the U-shaped guide rail. The rack makes a reciprocating motion. The external gear meshes with the rack for transmission. The rack makes a linear reciprocating motion, and the gear rotates synchronously in reciprocation. By setting the above structure, when the cylinder pushes the part that needs to swing, the swinging speed is stable, the force is evenly distributed during swinging, and the service performance of the equipment is improved. Description of the Drawings
[0014] Figure 1 is a three-dimensional structural schematic diagram of the present invention;
[0015] Figure 2 is a cross-sectional view of the present invention.
[0016] Legend: 100, U-shaped guide rail; 200, main cylinder; 210, piston rod assembly; 211, piston rod body; 212, first guide ring; 213, first seal; 214, seal; 215, piston body; 216, nut; 217, O-ring; 220, guide rod; 230, front end cover; 231, first sealing ring; 232, front cylinder head; 233, second guide ring; 234, second sealing ring; 235, second O-ring; 236, third sealing ring; 240, cylinder block; 250, bearing; 260, chute; 270, rear end cover; 271, first O-ring; 272, rear cylinder head; 300, rack. Detailed implementation
[0017] Refer to Figure 1-2 As shown, the present utility model provides a technical solution: a cylinder for linear-to-rotary motion conversion, comprising a U-shaped guide rail 100, a main cylinder 200 and a rack 300.
[0018] Next, specifically describe its overall specific settings and functions.
[0019] In this implementation: The rack 300 is assembled on the U-shaped guide rail 100. The U-shaped guide rail 100 has a U-shaped structure. There is a guide rail inside the U-shaped guide rail 100, and mounting screw holes are provided on the back surface of the guide rail for assembling the rack 300. The main cylinder 200 includes a piston rod assembly 210, a guide rod 220, a front end cover 230, a cylinder block 240, a bearing 250, a chute 260 and a rear end cover 270. One end of the piston rod assembly 210 and the guide rod 220 is connected to the U-shaped guide rail 100. The chute 260 is installed on both sides of the cylinder block 240 and fastened with screws. The chute 260 is assembled with the inner guide rail of the U-shaped guide rail 100, and the guide rail slides in the chute 260.
[0020] Specifically, the other end of the guide rod 220 is connected to the bearing 250, the bearing 250 is embedded in the cylinder body 240, the guide rod 220 is equipped with a plurality of bearings 250, the guide rod 220 and the bearing 250 slide linearly, and the U-shaped guide rail 100 has a high guiding performance. The piston rod assembly 210 includes a piston rod body 211, a piston body 215, an O-ring 217 and a nut 216, one end of the piston rod body 211 is connected to the U-shaped guide rail 100, the other end of the piston rod body 211 is connected to the piston body 215, and the nut 216 fastens the piston body 215 to the piston rod body 211. The piston body 215 includes a first guide ring 212, a first seal 213 and a second seal 214. When the piston body 215 moves in the cylinder, the first guide ring 212 and the first seal 213 respectively play a guiding and sealing role. There is a circular groove on one side of the piston body 215, and a raised circular ring on the other side of the piston body 215. The first seal 213 is embedded on one side of the circular ring of the piston body 215. When the piston body 215 contacts the rear end cover 270, the piston body 215 is buffered by the action of the first seal 213. The rear end cover 270 includes a rear cylinder cover 272 and a first O-ring 271. The rear end cover 270 and the cylinder body 240 are fastened with screws. The rear end cover 270 and the cylinder body 240 are connected by the first O-ring 271. A circular hole on one side of the cylinder cover 272 is formed. When the piston body 215 moves toward and contacts the rear end cover 270, a closed cavity is formed between one side of the circular ring of the piston body 215 and the circular hole of the cylinder cover 272 under the sealing action of the first seal 213, and the piston body 215 is buffered when moving. The front end cover 230 includes a first sealing ring 231, a front cylinder cover 232, a second guide ring 233, a second sealing ring 234, a second O-ring 235 and a third sealing ring 236. When the piston rod body 211 reciprocates, the first sealing ring 231 plays a dust-proof and sealing role, and the second guide ring 233 has a better guiding effect on the piston rod body 211. The front cylinder cover 232 has a raised ring on the side facing the piston body 215, and the inner and outer rings of the ring are respectively inlaid with the second sealing ring 234 and the third sealing ring 236. When the piston body 215 moves relative to the front cylinder cover 232 until a circular groove on one side of the piston body 215 contacts the front cylinder cover 232, the second sealing ring 234 and the third sealing ring 236 can form a closed cavity between the circular ring side of the front cylinder cover 232 and the circular groove side of the piston body 215, thereby enabling the piston body 215 to obtain a buffering effect.
[0021] Working principle: A cylinder for converting linear motion into rotary motion can be applied in many occasions. The cylinder for converting linear motion into rotary motion in this embodiment is equipped with a rack 300. The rack 300 reciprocates linearly with the cylinder. Under the action of the rack 300, the gear rotates synchronously in reciprocation. A cylinder for converting linear motion into rotary motion includes a main cylinder 200, a rack 300, and a U-shaped guide rail 100. There are guide rails inside the U-shaped guide rail 100, and the guide rails are assembled in the sliding grooves 260 on both sides of the main cylinder 200. The guide rails can slide between the guide rails and the sliding grooves 260. There are threaded mounting holes on the side opposite to the back of the guide rails, and these threaded mounting holes are used to mount the rack 300. The U-shaped end of the U-shaped guide rail 100 opposite to the opening is threadedly connected to the piston rod and the guide rod 220 of the main cylinder 200. Under the action of external compressed air, the piston rod pushes the U-shaped guide rail 100 to reciprocate. The rack 300 is mounted on the outer side of the U-shaped guide rail 100. The rack 300 reciprocates. The external gear meshes with the rack 300 for transmission. The rack 300 reciprocates linearly, and the gear rotates synchronously in reciprocation. By setting the above structure, when the cylinder pushes the part that needs to swing, the swinging speed is stable, the force is evenly distributed during swinging, and the service performance of the equipment is improved.
[0022] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.
Claims
1. A cylinder for converting linear motion into rotary motion, comprising a U-shaped guide rail (100), a main cylinder (200) and a rack (300), characterized in that: The rack (300) is assembled on the U-shaped guide rail (100). The U-shaped guide rail (100) is in a U-shaped structure. A guide rail is arranged inside the U-shaped guide rail (100). The back surface of the guide rail is provided with a mounting screw hole. The mounting screw hole is used to assemble the rack (300). The main cylinder (200) comprises a piston rod assembly (210), a guide rod (220), a front end cover (230), a cylinder body (240), a bearing (250), a slide groove (260) and a rear end cover (270). One end of the piston rod assembly (210) and the guide rod (220) are connected to the U-shaped guide rail (100). The slide groove (260) is installed on both sides of the cylinder body (240) and fastened with screws. The slide groove (260) is assembled with the inner guide rail of the U-shaped guide rail (100), and the guide rail slides in the slide groove (260).
2. The cylinder for converting linear motion into rotary motion according to claim 1, characterized in that: The other end of the guide rod (220) is connected to a bearing (250), the bearing (250) is embedded in the cylinder body (240), the guide rod (220) is configured with a plurality of bearings (250), the guide rod (220) and the bearing (250) slide linearly, and the U-shaped guide rail (100) has a high guiding property.
3. A cylinder for converting linear motion to rotary motion according to claim 1, characterized in that: The piston rod assembly (210) includes a piston rod body (211), a piston body (215), an O-ring (217) and a nut (216); one end of the piston rod body (211) is connected to the U-shaped guide rail (100), and the other end of the piston rod body (211) is connected to the piston body (215); and the nut (216) fastens the piston body (215) to the piston rod body (211).
4. A cylinder for converting linear motion to rotary motion according to claim 3, characterized in that: The piston body (215) comprises a first guide ring (212), a first seal (213) and a second seal (214). When the piston body (215) moves in the cylinder, the first guide ring (212) and the first seal (213) respectively play a guiding and sealing role. One side of the piston body (215) is provided with a circular groove, and the other side of the piston body (215) is provided with a raised circular ring. One side of the circular ring of the piston body (215) is inlaid with the first seal (213). When the piston body (215) contacts the rear end cover (270), the piston body (215) is buffered under the action of the first seal (213).
5. A cylinder for converting linear motion to rotary motion according to claim 3, characterized in that: The rear end cover (270) comprises a rear cylinder cover (272) and a first O-ring (271). The rear end cover (270) and the cylinder body (240) are fastened with screws. The rear end cover (270) and the cylinder body (240) are connected by the first O-ring (271). A circular hole is formed on one side of the cylinder cover (272). When the piston body (215) moves toward and contacts the rear end cover (270), a closed cavity is formed between one side of the circular ring of the piston body (215) and the circular hole of the cylinder cover (272) under the sealing action of the first seal (213), so that the piston body (215) is buffered when moving.
6. The cylinder for converting linear motion to rotary motion according to claim 3, characterized in that: The front end cover (230) includes a first sealing ring (231), a front cylinder head (232), a second guide ring (233), a second sealing ring (234), a second O-ring (235), and a third sealing ring (236). When the piston rod body (211) reciprocates, the first sealing ring (231) functions to prevent dust and seal. The second guide ring (233) has a better guiding effect on the piston rod body (211). The front cylinder head (232) has a raised circular ring on the side facing the piston body (215). The inner and outer circles of the circular ring are respectively inlaid with the second sealing ring (234) and the third sealing ring (236). When the piston body (215) moves relative to the front cylinder head (232) until a circular groove on one side of the piston body (215) contacts the front cylinder head (232), the second sealing ring (234) and the third sealing ring (236) can form a sealed cavity between one side of the circular ring of the front cylinder head (232) and one side of the circular groove of the piston body (215), so that the piston body (215) obtains a buffering effect.