Air cylinder convenient to lubricate

Abstract

The utility model relates to the technical field of air cylinders and discloses an air cylinder convenient to lubricate, which comprises a base, a cylinder barrel is fixedly connected to the middle of the top end of the base, a piston rod is mounted on the inner wall of the top end of the cylinder barrel, a lubricating component is mounted at the top end of the cylinder barrel close to the outer side of the piston rod, and a bolt is fixedly connected to the middle of the top end of the piston rod. A threaded sleeve is arranged on the outer side of the bolt, anti-loosening assemblies are installed on the left side and the right side of the top end of the piston rod, connecting blocks are fixedly connected to the upper sides of the left end and the right end of the cylinder barrel, retention lantern rings are fixedly connected to the opposite ends of the connecting blocks, and limiting assemblies are installed on the outer walls of the retention lantern rings. Supporting rods are arranged on the inner walls of the retention lantern rings, and inserting holes are formed in the ends, opposite to each other, of the supporting rods and correspond to the inner walls of the retention lantern rings. According to the utility model, the purpose of smearing lubricating oil on the piston rod is ensured, and the whole cylinder is light and convenient to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinders, in particular to a cylinder which is easy to lubricate. Background Art

[0002] The cylinder is a pneumatic actuator in pneumatic transmission that converts the pressure energy of compressed gas into mechanical energy. The air converts thermal energy into mechanical energy by expanding in the engine cylinder. The gas is compressed by the piston in the compressor to increase the pressure, causing the piston rod to perform reciprocating linear motion.

[0003] After searching, a cylinder that is easy to lubricate with announcement number CN216240814U includes: a cylinder barrel, a cylindrical metal part that acts to guide the piston to perform linear reciprocating motion in the cylinder, a piston rod is connected through the inside of the cylinder barrel, and the piston rod is the most important force-bearing part in the cylinder, a threaded rod is fixedly connected to the top of the piston rod, a threaded barrel is threadedly connected to the threaded rod, a top plate is fixedly connected to the top of the threaded barrel, and a support rod is arranged on one side of the cylinder barrel. The cylinder that is easy to lubricate, first, when the pipeline transports lubricating oil to the inside of the cylinder barrel, the piston rod is lubricated, which is easy to lubricate, then, the positioning block can be inserted into the positioning sleeve, so that the positioning block can be limited to prevent the threaded barrel from rotating and causing looseness between the threaded rod, which is easy to prevent the top plate from loosening, and finally, when the block is completely squeezed into the extrusion groove, the support rod can be pulled to separate from it along the upper block and the bottom block, so that the support rod can be replaced.

[0004] Based on the above patent, when the lubricating oil is transported to the inside of the cylinder through the pipeline, the piston rod is lubricated to facilitate lubrication. Then, the positioning block can be inserted into the positioning sleeve, so that the positioning block can be limited to prevent the threaded barrel from rotating and causing looseness between the threaded rod, thereby preventing the top plate from loosening. Finally, when the block is completely squeezed into the extrusion groove, the support rod can be pulled to separate from the upper block and the bottom block, so that the support rod can be replaced. However, the oil barrel installed on one side of the cylinder will increase the overall weight, which is inconvenient to carry, and when the push rod is pulled, it cannot be limited, and the staff needs to manually keep the spring in a stretched state, which is not convenient for the installation of the top plate. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a cylinder that is easy to lubricate. Compared with installing an oil barrel on the outside of the cylinder barrel, this technical means can ensure the purpose of applying lubricating oil to the piston rod while making the cylinder as a whole light and easy to carry.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A cylinder that is easy to lubricate, comprises a base, a cylinder barrel is fixedly connected to the middle part of the top end of the base, a piston rod is installed on the inner wall of the top end of the cylinder barrel, a lubrication assembly is installed on the top end of the cylinder barrel near the outside of the piston rod, a bolt is fixedly connected to the middle part of the top end of the piston rod, a threaded sleeve is arranged on the outside of the bolt, a top plate is fixedly connected to the top end of the threaded sleeve, slots are provided at both left and right ends of the threaded sleeve, anti-loosening assemblies are installed on both left and right sides of the top end of the piston rod, connecting blocks are fixedly connected to the upper sides of the left and right ends of the cylinder barrel, a retaining ring is fixedly connected at the opposite end of the connecting block, a limiting assembly is installed on the outer wall of the retaining ring, a support rod is provided on the inner wall of the retaining ring, and a hole is provided on the inner wall of the retaining ring corresponding to the opposite end of the support rod.

[0008] Furthermore, the lubrication assembly includes a lubrication ring located at the top of the cylinder and fixedly connected to the outside of the piston rod, a sponge pad is fixedly connected to the inner wall of the lubrication ring, the inner wall of the sponge pad is in contact with the outer wall of the piston rod, and an oil inlet nozzle is fixedly connected to the right end of the lubrication ring, and a rubber plug is embedded in the inner wall of the right end of the oil inlet nozzle.

[0009] Furthermore, the anti-loosening component includes a connecting plate fixedly connected on both sides of the left and right sides of the top end of the piston rod, the inner wall of the connecting plate is slidably connected with a sliding rod, the opposite end of the sliding rod is fixedly connected with a clamping block, the shape of the opposite end of the clamping block matches the shape of the inner wall of the clamping groove, the opposite end of the sliding rod is fixedly connected with a pulling block, the opposite end of the pulling block is rotatably connected with an adapter plate, and the pulling block and the connecting plate are connected by a first spring.

[0010] Furthermore, the limiting assembly includes an insertion rod slidably connected to the inner wall at the opposite end of the retaining ring, the shape of the opposite end of the insertion rod matches the shape of the inner wall of the hole, and the opposite end of the insertion rod is fixedly connected with an arc plate, and the arc plate and the retaining ring are connected by a second spring.

[0011] Furthermore, one end of the first spring is fixedly connected to the opposite end of the connecting plate close to the outside of the sliding rod, and the other end of the first spring is fixedly connected to the opposite end of the pulling block close to the outside of the sliding rod.

[0012] Furthermore, one end of the second spring is fixedly connected to the opposite end of the retaining ring close to the outside of the insertion rod, and the other end of the second spring is fixedly connected to the inner wall of the opposite end of the arc plate close to the outside of the insertion rod.

[0013] Furthermore, a positioning plate is fixedly connected to the top end of the piston rod on the side away from the connecting plate.

[0014] Furthermore, the shape of the bottom end of the support rod matches the shape of the through holes on the left and right sides of the top end of the base.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, lubricating oil is injected into the oil inlet nozzle, and the lubricating oil enters the gap between the oil inlet nozzle and the sponge pad, and the sponge pad is immersed in the lubricating oil. When the piston rod extends from the cylinder barrel, the inner side of the sponge pad contacts the outer wall of the piston rod, so that the lubricating oil can be applied to the surface of the piston rod. Compared with installing an oil barrel on the outside of the cylinder barrel, this technical means can ensure that the lubricating oil is applied to the piston rod, and at the same time, the cylinder as a whole is light and easy to carry.

[0017] 2. In the utility model, the pull block is pulled outward to stretch the first spring, and then the adapter plate is rotated to place the opposite end of the adapter plate in contact with the opposite end of the positioning plate. At this time, the position of the card block is limited to prevent the first spring from rebounding and driving the card block, which affects the installation of the top plate and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a cylinder that is easy to lubricate proposed by the utility model;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 A cross-sectional view of a lubricating ring of a cylinder that is easy to lubricate proposed by the utility model;

[0021] Figure 4 This is a schematic diagram of a threaded sleeve structure of a cylinder that is easy to lubricate proposed by the utility model;

[0022] Figure 5 This is a schematic diagram of the piston rod structure of a cylinder that is easy to lubricate proposed by the utility model;

[0023] Figure 6 This is a schematic diagram of a retaining collar structure of a cylinder that is easy to lubricate, as proposed by the utility model;

[0024] Figure 7 This is a schematic diagram of a support rod structure of a cylinder that is easy to lubricate proposed by the utility model;

[0025] Figure 8 The utility model is a schematic diagram of a base structure of a cylinder which is easy to lubricate.

[0026] Legend:

[0027] 1. Cylinder barrel; 2. Base; 3. Support rod; 4. Piston rod; 5. Connecting block; 6. Retaining collar; 7. Arc plate; 8. Threaded sleeve; 9. Lubricating ring; 10. Top plate; 11. Connecting plate; 12. Slide rod; 13. Pull block; 14. First spring; 15. Adapter plate; 16. Positioning plate; 17. Block; 18. Sponge pad; 19. Oil inlet nozzle; 20. Rubber plug; 21. Slot; 22. Bolt; 23. Insert rod; 24. Second spring; 25. Socket. DETAILED DESCRIPTION

[0028] 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. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Reference Figure 1-8 The utility model provides an embodiment: a cylinder that is easy to lubricate, including a base 2, a cylinder barrel 1 is fixedly connected to the middle part of the top of the base 2, a piston rod 4 is installed on the inner wall of the top of the cylinder barrel 1, a bolt 22 is fixedly connected to the middle part of the top of the piston rod 4, a threaded sleeve 8 is arranged on the outer side of the bolt 22, a top plate 10 is fixedly connected to the top of the threaded sleeve 8, the threaded sleeve 8 is sleeved on the outer wall of the bolt 22, and then rotated, and the top plate 10 is fixed by the engagement between the threads, the left and right ends of the threaded sleeve 8 are provided with a card groove 21, the inner wall of the card groove 21 is rectangular, the upper sides of the left and right ends of the cylinder barrel 1 are fixedly connected with a connecting block 5, the opposite end of the connecting block 5 is fixedly connected with a retaining collar 6, the inner wall of the retaining collar 6 is provided with a support rod 3, and the opposite end of the support rod 3 is provided with a plug hole 25 corresponding to the inner wall of the retaining collar 6, and the inner wall of the plug hole 25 is circular.

[0030] Specifically, a lubrication ring 9 is fixedly connected to the outer side of the piston rod 4 at the top of the cylinder 1, and a sponge pad 18 is fixedly connected to the inner wall of the lubrication ring 9. The inner wall of the sponge pad 18 fits the outer wall of the piston rod 4. An oil inlet nozzle 19 is fixedly connected to the right end of the lubrication ring 9. A rubber plug 20 is embedded in the inner wall of the right end of the oil inlet nozzle 19. An oil connecting belt is arranged between the rubber plug 20 and the oil inlet nozzle 19 to prevent the rubber plug 20 from being pulled out and falling. The rubber plug 20 is pulled out from the oil inlet nozzle 19, and then lubricating oil is injected into the oil inlet nozzle 19. The lubricating oil enters the gap between the oil inlet nozzle 19 and the sponge pad 18, and the rubber plug 20 is plugged again, waiting for the sponge pad 18 to be immersed in the lubricating oil. When the piston rod 4 extends out of the cylinder 1, it contacts the outer wall of the piston rod 4 through the inner side of the sponge pad 18, so that the surface of the piston rod 4 can be coated with lubricating oil.

[0031] Specifically, the connecting plates 11 are fixedly connected on both sides of the top of the piston rod 4, and the positioning plates 16 are fixedly connected on the side away from the connecting plate 11. The inner wall of the connecting plate 11 is slidably connected with a slide rod 12, and the opposite end of the slide rod 12 is fixedly connected with a clamping block 17, and the shape of the opposite end of the clamping block 17 matches the shape of the inner wall of the card slot 21. The opposite end of the slide rod 12 is fixedly connected with a pull block 13, and the opposite end of the pull block 13 is rotatably connected with an adapter plate 15. The pull block 13 and the connecting plate 11 are connected through a first spring 14. One end of the first spring 14 is fixedly connected to the opposite end of the connecting plate 11 close to the outer side of the slide rod 12, and the other end of the first spring 14 is fixedly connected to the opposite end of the connecting plate 11. It is fixedly connected to the opposite end of the pull block 13 close to the outside of the slide rod 12, and the pull blocks 13 on both sides are pulled outward. At the same time, the first spring 14 is stretched by force, and then the adapter plate 15 is rotated so that its opposite end is placed in contact with the opposite end of the positioning plate 16, and the position of the block 17 is limited at this time to prevent the first spring 14 from rebounding and driving the block 17, affecting the installation of the top plate 10, and then the threaded sleeve 8 is aligned with the outside of the bolt 22 and rotated to install the top plate 10, and then the adapter plate 15 is rotated to reset, and under the elastic force of the first spring 14, the block 17 is driven to reset and inserted into the slot 21, so as to limit the threaded sleeve 8 and prevent the threaded sleeve 8 from rotating and loosening between the bolt 22, causing the top plate 10 to fall off.

[0032] Specifically, the inner wall of the opposite end of the retaining ring 6 is slidably connected to the plug rod 23, and the shape of the opposite end of the plug rod 23 matches the shape of the inner wall of the hole 25. The opposite end of the plug rod 23 is fixedly connected with an arc plate 7, and the arc plate 7 and the retaining ring 6 are connected by a second spring 24. One end of the second spring 24 is fixedly connected to the opposite end of the retaining ring 6 near the outer side of the plug rod 23, and the other end of the second spring 24 is fixedly connected to the inner wall of the opposite end of the arc plate 7 near the outer side of the plug rod 23. The shape of the bottom end of the support rod 3 matches the shape of the through holes on the left and right sides of the top of the base 2. By pulling the arc plate 7 outward, the second spring 24 is stretched, and the plug rod 23 is disengaged from the hole 25 at the same time, so that the limiting relationship between the retaining ring 6 and the support rod 3 is released, so that the support rod 3 can be pulled out of the retaining ring 6 for replacement.

[0033] Working principle: First, pull out the rubber plug 20 from the oil inlet nozzle 19, then inject lubricating oil into the oil inlet nozzle 19, and the lubricating oil enters the gap between the oil inlet nozzle 19 and the sponge pad 18, then plug the rubber plug 20 again, and wait for the sponge pad 18 to be immersed in the lubricating oil. When the piston rod 4 extends out from the cylinder 1, the inner side of the sponge pad 18 contacts the outer wall of the piston rod 4, so that the lubricating oil can be applied to the surface of the piston rod 4. By pulling the arc plate 7 outward, the second spring 24 is stretched, and the insertion rod 23 is disengaged from the insertion hole 25, so that the limiting relationship between the retaining ring 6 and the support rod 3 is released, so that the support rod 3 can be drawn out of the retaining ring 6. To replace it, pull the pull blocks 13 on both sides outward, and at the same time, the first spring 14 is stretched. Then, the adapter plate 15 is rotated so that its opposite ends are placed in contact with the opposite ends of the positioning plate 16. At this time, the position of the block 17 is limited to prevent the first spring 14 from rebounding and driving the block 17, which affects the installation of the top plate 10. Then, the threaded sleeve 8 is aligned with the outside of the bolt 22 and rotated to install the top plate 10. Then, the adapter plate 15 is rotated to reset, and under the elastic force of the first spring 14, the block 17 is driven to reset and insert into the slot 21, thereby limiting the threaded sleeve 8 and preventing the threaded sleeve 8 from rotating and loosening between the bolt 22, which causes the top plate 10 to fall off.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cylinder that is easy to lubricate, comprising a base (2), characterized in that: A cylinder (1) is fixedly connected to the middle of the top of the base (2), a piston rod (4) is installed on the inner wall of the top of the cylinder (1), a lubrication assembly is installed on the top of the cylinder (1) near the outside of the piston rod (4), a bolt (22) is fixedly connected to the middle of the top of the piston rod (4), a threaded sleeve (8) is arranged on the outside of the bolt (22), a top plate (10) is fixedly connected to the top of the threaded sleeve (8), a clamping groove (21) is provided at both the left and right ends of the threaded sleeve (8), anti-loosening assemblies are installed on both the left and right sides of the top of the piston rod (4), connecting blocks (5) are fixedly connected to the upper sides of the left and right ends of the cylinder (1), a retaining ring (6) is fixedly connected to the opposite end of the connecting block (5), a limiting assembly is installed on the outer wall of the retaining ring (6), a support rod (3) is arranged on the inner wall of the retaining ring (6), and a socket (25) is provided on the inner wall of the retaining ring (6) at the opposite end of the support rod (3).

2. A cylinder that is easy to lubricate according to claim 1, characterized in that: The lubrication assembly comprises a lubrication ring (9) located at the top end of the cylinder barrel (1) and fixedly connected to the outside of the piston rod (4); a sponge pad (18) is fixedly connected to the inner wall of the lubrication ring (9); the inner wall of the sponge pad (18) is in contact with the outer wall of the piston rod (4); an oil inlet nozzle (19) is fixedly connected to the right end of the lubrication ring (9); a rubber plug (20) is embedded in the inner wall of the right end of the oil inlet nozzle (19).

3. A cylinder that is easy to lubricate according to claim 1, characterized in that: The anti-loosening component comprises a connecting plate (11) fixedly connected to both left and right sides of the top end of the piston rod (4); the inner wall of the connecting plate (11) is slidably connected to a sliding rod (12); the opposite end of the sliding rod (12) is fixedly connected to a clamping block (17); the shape of the opposite end of the clamping block (17) matches the shape of the inner wall of the clamping groove (21); the opposite end of the sliding rod (12) is fixedly connected to a pulling block (13); the opposite end of the pulling block (13) is rotatably connected to an adapter plate (15); the pulling block (13) and the connecting plate (11) are connected via a first spring (14).

4. The cylinder that is easy to lubricate according to claim 1, characterized in that: The limiting assembly comprises an insertion rod (23) which is slidably connected to the inner wall of the opposite end of the retaining collar (6); the shape of the opposite end of the insertion rod (23) matches the shape of the inner wall of the insertion hole (25); the opposite end of the insertion rod (23) is fixedly connected to an arc plate (7); the arc plate (7) and the retaining collar (6) are connected via a second spring (24).

5. The cylinder that is easy to lubricate according to claim 3, characterized in that: One end of the first spring (14) is fixedly connected to the opposite end of the connecting plate (11) close to the outside of the sliding rod (12), and the other end of the first spring (14) is fixedly connected to the opposite end of the pulling block (13) close to the outside of the sliding rod (12).

6. The cylinder that is easy to lubricate according to claim 4, characterized in that: One end of the second spring (24) is fixedly connected to the opposite end of the retaining ring (6) close to the outside of the insertion rod (23), and the other end of the second spring (24) is fixedly connected to the inner wall of the opposite end of the arc plate (7) close to the outside of the insertion rod (23).

7. The cylinder that is easy to lubricate according to claim 3, characterized in that: A positioning plate (16) is fixedly connected to the top end of the piston rod (4) on the side away from the connecting plate (11).

8. The cylinder that is easy to lubricate according to claim 1, characterized in that: The shape of the bottom end of the support rod (3) matches the shape of the through holes on the left and right sides of the top end of the base (2).

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