Hydraulic cylinder with positioning structure

Abstract

The utility model relates to the technical field of hydrodynamic force, and discloses a hydraulic cylinder with a positioning structure, which comprises a cylinder barrel, a piston is slidably connected inside the cylinder barrel, a plurality of third sealing gaskets are fixedly connected outside the piston, a push rod is fixedly connected inside the piston, a power component is rotatably connected outside the push rod, and the power component is fixedly connected inside the cylinder barrel. The left side of the push rod is rotationally connected with a groove disc, a spiral groove is formed in the groove disc, the outer portion of the fixing block is fixedly connected with a limiting circular ring, the inner portion of the sliding block is fixedly connected with a fixing rod, and the outer portion of the fixing rod is rotationally connected with a buckling device. According to the utility model, the hexagonal block drives the groove disc to rotate, the sliding blocks which are meshed together move towards the middle, and the buckling device is used for clamping an object, so that the push rod is in butt joint with the object and is fixed together with the object, and the positioning and reinforcing effects of the push rod of the hydraulic cylinder and the object are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid power, in particular to a hydraulic cylinder with a positioning structure. Background Art

[0002] In many industrial applications, hydraulic cylinders are an important device that converts liquid pressure into linear motion or force. Their performance directly affects the stability and accuracy of the entire system. Although traditional hydraulic cylinders have been widely used in many aspects, they still have certain limitations in high-precision control situations, especially in applications that require precise position control. With the continuous development of automation and intelligent technology, higher requirements are placed on the performance of hydraulic cylinders. Especially in the fields of intelligent manufacturing, robotics, precision machining, etc., there is an urgent need for a hydraulic cylinder with a positioning structure and higher reliability. Therefore, a hydraulic cylinder with a positioning structure is proposed.

[0003] After searching: Chinese patent announcement number: CN206682070U, it involves a hydraulic actuator component and discloses a hydraulic cylinder. The key points of its technical solution are that it includes a cylinder barrel, a cylinder bottom fixed at one end of the cylinder barrel and sealing the cylinder barrel, and a piston assembly inserted in the cylinder barrel, the piston assembly includes a piston and a piston rod detachably fixedly connected to the piston, the piston rod is protruding from the cylinder barrel at one end away from the cylinder bottom, a pressure relief groove is opened on the side wall of the cylinder bottom, a through hole is opened on the side wall of the pressure relief groove facing the cylinder barrel, a flow safety valve is threadedly connected in the pressure relief groove, an oil plug abutting the flow safety valve is threadedly connected at one end of the pressure relief groove, and an iron oil plug is threadedly connected at the other end of the pressure relief groove, the diameter of the iron oil plug is larger than the diameter of the oil plug, so as to achieve the technical effect of preventing the external pipeline from rupturing and causing a sharp increase in the return flow, and ensuring that the load will not fall instantly and cause danger.

[0004] The above patent embodiment records "a cylinder barrel (1), a cylinder bottom (11) fixed at one end of the cylinder barrel (1) and sealing the cylinder barrel (1), and a piston assembly inserted in the cylinder barrel (1), the piston assembly includes a piston (12) and a piston rod (123) detachably fixedly connected to the piston (12), the piston rod (123) is arranged at one end away from the cylinder bottom (11) and protrudes from the cylinder barrel (1), and is characterized in that: a pressure relief groove (111) is opened on the side wall of the cylinder bottom (11), a through hole is opened on the side wall of the pressure relief groove (111) facing the cylinder barrel (1), and a flow protection thread is connected in the pressure relief groove (111). A safety valve (112) is provided, an oil plug (1111) abutting against the flow safety valve (112) is threadedly connected at one end of the pressure relief groove (111), and an iron oil plug (1112) is threadedly connected at the other end of the pressure relief groove (111), wherein the diameter of the iron oil plug (1112) is larger than the diameter of the oil plug (1111), so as to prevent the external pipeline from rupturing and causing a sharp increase in the return flow, thereby ensuring that the load will not fall instantly and cause a dangerous hydraulic cylinder. However, the device improves the safety of the pipeline, but cannot be positioned and fixed with the object. Therefore, in view of the above-mentioned shortcomings, a new type of hydraulic cylinder with a positioning structure is proposed. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a hydraulic cylinder with a positioning structure, aiming to improve the problem that the hydraulic rods of some devices in the prior art can be hydraulically extended and retracted but cannot position objects on the top of the hydraulic cylinder, resulting in unstable transmission.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a hydraulic cylinder with a positioning structure, comprising a cylinder barrel, a piston is slidably connected inside the cylinder barrel, a plurality of sealing gaskets are fixedly connected to the outside of the piston, a push rod is fixedly connected inside the piston, a top cover is slidably connected to the outside of the push rod, a power assembly is rotatably connected to the outside of the push rod, a groove disk is rotatably connected to the left side of the push rod, a spiral groove is provided inside the groove disk, a fixed block is fixedly connected to the left side of the push rod, a limiting ring is fixedly connected to the outside of the fixed block, a plurality of sliders are slidably connected to the inside of the limiting ring, a fixing rod is fixedly connected to the inside of the slider, and a buckler is rotatably connected to the outside of the fixing rod;

[0007] As a further description of the above technical solution: the power assembly includes a hexagonal block, the inside of the hexagonal block is rotatably connected to the outside of the push rod, and the left side of the hexagonal block is fixedly connected to the right side of the groove disk;

[0008] As a further description of the above technical solution: the outer portions of the plurality of sliders are meshed with the groove disk, and the outer portions of the plurality of sealing pads are slidably connected to the interior of the cylinder;

[0009] As a further description of the above technical solution: the left side of the push rod is slidably connected with a front end cover, the interior of the front end cover is slidably connected with a plurality of long rods, the exterior of the plurality of long rods is slidably connected with a rear end cover, the right side of the rear end cover is fixedly connected with a rotating ring, and the left and right sides of the long rods are threadedly connected with a nut respectively;

[0010] As a further description of the above technical solution: the top of the front cover and the rear cover is provided with an oil pump port, the inner thread of the oil pump port is connected with an oil pipe, and the inner thread of the oil pump port is connected with a plugging cover;

[0011] As a further description of the above technical solution: the right side of the cylinder barrel contacts the rear end cover, the left side of the cylinder barrel contacts the front end cover, the left and right sides of the cylinder barrel are fixedly connected with an annular sealing ring, the front end cover and the rear end cover are fixedly connected with a sealing ring four inside, and the insides of the two sealing rings four are first in contact with the outside of the cylinder barrel;

[0012] As a further description of the above technical solution: two dust removal pads are fixedly connected to the interior of the top cover, a sealing pad 1 is fixedly connected to the interior of the top cover, the interiors of the two dust removal pads are in contact with the exterior of the push rod, the interior of the sealing pad 1 is in contact with the exterior of the push rod, a plurality of small screws are threadedly connected to the interior of the top cover, the exteriors of the plurality of small screws are threadedly connected to the interior of the front end cover, and the right side of the top cover is in contact with the left side of the front end cover;

[0013] As a further description of the above technical solution: a sealing gasket 2 is fixedly connected to the right side of the top cover, the outer sides of the plurality of small screws are slidably connected to the inner side of the sealing gasket 2, and the right side of the sealing gasket 2 is in contact with the left side of the front end cover.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the groove disk is driven to rotate by the hexagonal block, so that the multiple sliders meshed together move toward the middle, and the object is clamped by the snap-fit ​​device, so that the push rod is docked with the object and fixed together, thereby achieving the positioning and reinforcement effect of the hydraulic cylinder push rod and the object.

[0016] 2. In the utility model, the rear end cover, the front end cover and the cylinder barrel are compressed by using a plurality of long rods and nuts, and sealing gaskets and dust removal gaskets are added at a plurality of connecting parts to prevent leakage of liquid and gas in the hydraulic cylinder, thereby ensuring the airtightness and pressure stability of the hydraulic system, thereby achieving the dustproof and sealing effect of the hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1A three-dimensional diagram of a hydraulic cylinder with a positioning structure proposed by the utility model;

[0018] Figure 2 This is a structural schematic diagram of a long rod of a hydraulic cylinder with a positioning structure proposed by the utility model;

[0019] Figure 3 This is a structural schematic diagram of a piston of a hydraulic cylinder with a positioning structure proposed by the utility model;

[0020] Figure 4 This is a structural schematic diagram of a limiting ring of a hydraulic cylinder with a positioning structure proposed by the utility model.

[0021] Legend:

[0022] 1. Cylinder barrel; 2. Piston; 3. Push rod; 4. Hexagonal block; 5. Grooved disk; 6. Spiral groove; 7. Fixed block; 8. Limiting ring; 9. Slider; 10. Fixed rod; 11. Fastener; 12. Front cover; 13. Top cover; 14. Dust removal pad; 15. Gasket 1; 16. Small screw; 17. Gasket 2; 18. Long rod; 19. Rear cover; 20. Nut; 21. Rotating ring; 22. Oil pump port; 23. Plug cover; 24. Oil pipe; 25. Gasket 3; 26. Annular seal ring; 27. Sealing ring 4. DETAILED DESCRIPTION

[0023] 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.

[0024] Reference Figure 1 , Figure 3 , Figure 4The utility model provides an embodiment: a hydraulic cylinder with a positioning structure, including a cylinder barrel 1, a piston 2 is slidably connected inside the cylinder barrel 1, and a plurality of sealing gaskets 3 25 are fixedly connected to the outside of the piston 2. The plurality of sealing gaskets 3 25 fixedly connected to the outside ensure good sealing between the piston 2 and the cylinder barrel to prevent liquid and gas leakage. A push rod 3 is fixedly connected inside the piston 2, and a top cover 13 is slidably connected to the outside of the push rod 3, allowing the push rod 3 to move smoothly during operation. At the same time, the design of the top cover 13 helps to protect the internal components from external contamination. The outside of the push rod 3 is rotatably connected to a power assembly, and the power assembly includes a hexagonal block 4, the inside of the hexagonal block 4 is rotatably connected to the outside of the push rod 3, the left side of the hexagonal block 4 is fixedly connected to the right side of the groove disk 5, the left side of the push rod 3 is rotatably connected to the groove disk 5, and the groove disk 5 is provided with a spiral groove 6 inside. It includes components such as a hexagonal block 4, a groove disk 5, and a spiral groove 6. These components together constitute a power transmission system, which effectively applies power to multiple sliders 9 to make them move toward the middle. A fixed block 7 is fixedly connected to the left side of the push rod 3, and a limiting ring 8 is fixedly connected to the outside of the fixed block 7. The purpose of the limiting ring 8 and the fixed block 7 is to use the push rod 3 to limit the slider 9 to only slide but not rotate. The inner sliding connection of the limiting ring 8 is multiple sliders 9, and the inner fixed connection of the slider 9 is a fixed rod 10, and the outer rotation connection of the fixed rod 10 is a fastener 11. The fastener 11 rotates on the fixed rod 10 to adapt to the surfaces of different objects and facilitate clamping. The outer parts of the multiple sliders 9 are meshed with the groove disk 5, so that the power of the power component acts on the slider 9, making it move slowly toward the middle. The outer parts of the multiple sealing gaskets 25 are slidably connected to the inside of the cylinder 1.

[0025] Reference Figure 1-Figure 3The left side of the push rod 3 is slidably connected with the front end cover 12, and the internal sliding connection of the front end cover 12 is connected with a plurality of long rods 18, and the external sliding connection of the plurality of long rods 18 is connected with the rear end cover 19. The front end cover 12 and the rear end cover 19 constitute the main closed structure of the spray room. Their design not only ensures the sealing of the internal environment, but also facilitates access to the internal components for maintenance and adjustment. The right side of the rear end cover 19 is fixedly connected with a rotating ring 21, which is beneficial to the overall fixation of the hydraulic cylinder. The left and right sides of the long rod 18 are threadedly connected with a nut 20, so that the two nuts 20 are tightened to fix 19, 1 and 12. The front end cover 12 and the rear end cover 19 are each provided with an oil pump port 22 at the top, which is the inlet and outlet of the hydraulic oil of the hydraulic cylinder. The internal threads of the oil pump port 22 are connected with an oil pipe 24, and the internal threads of the oil pump port 22 are connected with a plugging cover 23. When in use, the oil pipe 24 is used to transport the hydraulic oil. When not in use, the plugging cover 23 can be used to block the oil pump port 22 to prevent external foreign matter from entering the hydraulic cylinder. The right side of the cylinder barrel 1 contacts the rear end cover 19, and the left side of the cylinder barrel 1 contacts the front end cover 12. The left and right sides of the cylinder barrel 1 are fixedly connected with an annular sealing ring 26, and the front end cover 12 and the rear end cover 19 are internally fixedly connected with a sealing ring four 27. The interiors of the two sealing rings four 27 first contact the outside of the cylinder barrel 1. These sealing rings enhance the sealing effect between the front end cover 12, the rear end cover and the cylinder barrel 1 to prevent any possible leakage and ensure the cleanliness and safety of the spraying environment.

[0026] Reference Figure 1-Figure 3 The interior of the top cover 13 is fixedly connected with two dust removal pads 14, and the interior of the top cover 13 is fixedly connected with a sealing gasket 15, which is located inside the top cover 13 and contacts with the outside of the push rod 3, providing dustproof and sealing functions for the push rod 3, keeping the surface of the push rod 3 clean, and reducing wear caused by dust. The interior of the two dust removal pads 14 contacts with the outside of the push rod 3, and the interior of the sealing gasket 15 contacts with the outside of the push rod 3. The interior of the top cover 13 is threadedly connected with a plurality of small screws 16, and the external threads of the plurality of small screws 16 are connected to the interior of the front end cover 12, and the right side of the top cover 13 contacts with the left side of the front end cover 12. The right side of the top cover 13 is fixedly connected with a sealing gasket 2 17, which is used to fix the top cover 13 on the front end cover and provides adjustment and sealing functions. The external parts of the plurality of small screws 16 are slidably connected to the interior of the sealing gasket 2 17, and the right side of the sealing gasket 2 17 contacts with the left side of the front end cover 12.

[0027] Compared with some devices in the prior art, the above content can achieve the positioning and reinforcement effect of the hydraulic cylinder push rod 3 and the object and improve the airtightness and pressure stability of the hydraulic system, making the dustproof and sealing properties of the hydraulic cylinder better.

[0028] Working principle: The working process starts with the hydraulic oil being injected into the cylinder 1 through the oil pump port 22. The inside of the oil pump port 22 is also threadedly connected with an oil pipe 24 for conveying hydraulic oil. When not in use, it can be closed by a plug cap 23 to prevent external foreign matter from entering. The injected hydraulic oil generates pressure in the cylinder 1, pushing the piston 2 to slide. The multiple sealing gaskets 25 fixedly connected to the outside of the piston 2 ensure good sealing between the piston 2 and the cylinder 1, effectively preventing liquid and gas leakage. The push rod 3 fixedly connected to the inside of the piston 2 moves with the movement of the piston 2. During this process, the top cover 13 is slidably connected to the outside of the push rod 3, providing smooth movement for the push rod 3 while protecting the internal components from external contamination. The dust removal pad 14 and the sealing pad 15 are located inside the top cover 13, close to the outside of the push rod 3, not only providing a dustproof sealing function for the push rod 3, but also reducing the wear caused by dust. The front cover 12 and the rear cover 19 are respectively fixed at both ends of the cylinder 1, and together with the long rod 18, the nut 20 and the rotating ring 21, form a stable structural frame, and facilitate access to the internal components for maintenance and adjustment. When the push rod 3 is telescoped to a suitable position, the front clamping mechanism starts to work. In this system, the hexagonal block 4, the groove disk 5 and the spiral groove 6 together constitute an efficient power transmission system, and the spiral groove 6 inside it is engaged with the slider 9. Such a design allows the power component to effectively convert the power into the linear motion of the slider 9 through the spiral groove 6 when it receives power, so that the slider 9 moves slowly to the middle, and the fastener 11 rotating on the fixed rod 10 adapts to the surface of different objects to achieve the clamping action.

[0029] 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 hydraulic cylinder with a positioning structure, comprising a cylinder barrel (1), characterized in that: The cylinder (1) is internally slidably connected to a piston (2), and the piston (2) is externally fixedly connected to a plurality of sealing gaskets (25). The piston (2) is internally fixedly connected to a push rod (3), and the push rod (3) is externally slidably connected to a top cover (13). The push rod (3) is externally rotatably connected to a power assembly. The left side of the push rod (3) is rotatably connected to a groove disk (5), and a spiral groove (6) is provided inside the groove disk (5). The left side of the push rod (3) is fixedly connected to a fixed block (7), and the fixed block (7) is externally fixedly connected to a limiting ring (8). The limiting ring (8) is internally slidably connected to a plurality of sliders (9), and the slider (9) is internally fixedly connected to a fixing rod (10), and the fixing rod (10) is externally rotatably connected to a fastener (11).

2. The hydraulic cylinder with a positioning structure according to claim 1, characterized in that: The power assembly comprises a hexagonal block (4), the interior of the hexagonal block (4) is rotatably connected to the exterior of the push rod (3), and the left side of the hexagonal block (4) is fixedly connected to the right side of the groove plate (5).

3. The hydraulic cylinder with a positioning structure according to claim 1, characterized in that: The exteriors of the plurality of sliders (9) are meshed with the groove disk (5), and the exteriors of the plurality of sealing gaskets (25) are slidably connected to the interior of the cylinder barrel (1).

4. The hydraulic cylinder with a positioning structure according to claim 1, characterized in that: The left side of the push rod (3) is slidably connected to a front end cover (12), the interior of the front end cover (12) is slidably connected to a plurality of long rods (18), the exterior of the plurality of long rods (18) is slidably connected to a rear end cover (19), the right side of the rear end cover (19) is fixedly connected to a rotating ring (21), and the left and right sides of the long rods (18) are threadedly connected to each other with a nut (20).

5. The hydraulic cylinder with a positioning structure according to claim 4, characterized in that: The front end cover (12) and the rear end cover (19) are each provided with an oil pump port (22) at the top, the oil pump port (22) is internally threadedly connected to an oil pipe (24), and the oil pump port (22) is internally threadedly connected to a plugging cover (23).

6. The hydraulic cylinder with a positioning structure according to claim 4, characterized in that: The right side of the cylinder barrel (1) contacts the rear end cover (19), and the left side of the cylinder barrel (1) contacts the front end cover (12). The left and right sides of the cylinder barrel (1) are fixedly connected with an annular sealing ring (26), and the front end cover (12) and the rear end cover (19) are fixedly connected with a sealing ring four (27) each. The insides of the two sealing rings four (27) first contact the outside of the cylinder barrel (1).

7. The hydraulic cylinder with a positioning structure according to claim 4, characterized in that: The interior of the top cover (13) is fixedly connected with two dust removal pads (14), and the interior of the top cover (13) is fixedly connected with a sealing gasket (15). The interior of the two dust removal pads (14) is in contact with the exterior of the push rod (3), and the interior of the sealing gasket (15) is in contact with the exterior of the push rod (3). The interior of the top cover (13) is threadedly connected with a plurality of small screws (16), and the exterior of the plurality of small screws (16) is threadedly connected to the interior of the front end cover (12). The right side of the top cover (13) is in contact with the left side of the front end cover (12).

8. The hydraulic cylinder with a positioning structure according to claim 7, characterized in that: The right side of the top cover (13) is fixedly connected with a sealing gasket 2 (17), the outer sides of the plurality of small screws (16) are slidably connected to the inner side of the sealing gasket 2 (17), and the right side of the sealing gasket 2 (17) is in contact with the left side of the front end cover (12).

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