Hydraulic oil cylinder with buffer structure

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, and discloses a hydraulic oil cylinder with a buffer structure, which comprises a cylinder barrel, a piston rod is slidably arranged in the cylinder barrel, a top plate is fixedly arranged at the top of the piston rod, a cylinder cover is fixedly arranged at the top of the cylinder barrel, and a plurality of push rods are fixedly arranged at the bottom of the top plate. The bottom of each push rod is fixedly provided with a push plate, the outer side of the cylinder barrel is fixedly provided with a plurality of fixing barrels, the push plates are slidably mounted in the fixing barrels, and exhaust nozzles are fixedly arranged in the fixing barrels. During use, when the piston rod slides towards the interior of the cylinder barrel, the piston rod can push the push rods to slide through the top plate, so that the push rods push the sealing gaskets; when the hydraulic cylinder is damaged, the sealing gasket can extrude the spring to deform the spring, and meanwhile, the sealing gasket can exhaust air in the fixed cylinder through the exhaust nozzle, so that buffering is performed, and the hydraulic cylinder is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic oil cylinder provided with a buffer structure. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, the deceleration device can be eliminated, there is no transmission gap, and the motion is smooth. Therefore, it is widely used in the hydraulic systems of various machines. The output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides; however, the hydraulic cylinders currently used in the market have a relatively simple structure. When in use, the internal components cannot play a good buffering role and are prone to damage, thereby reducing the service life. Therefore, a hydraulic cylinder with a buffer structure is proposed. Utility Model Content

[0003] The purpose of the utility model is to provide a hydraulic cylinder with a buffer structure to solve the problem raised in the above background technology that the hydraulic cylinder currently used in the market has a relatively simple structure, and when in use, the internal components cannot play a good buffering role and are prone to damage, thereby reducing the service life.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a hydraulic cylinder with a buffer structure, comprising a cylinder barrel, a piston rod is slidably arranged inside the cylinder barrel, a top plate is fixedly arranged on the top of the piston rod, a cylinder cover is fixedly arranged on the top of the cylinder barrel, a plurality of push rods are fixedly arranged on the bottom of the top plate, a push plate is fixedly arranged on the bottom of the plurality of push rods, a plurality of fixed cylinders are fixedly arranged on the outside of the cylinder barrel, the push plate is slidably installed inside the fixed cylinder, an exhaust nozzle is fixedly arranged inside the fixed cylinder, a spring is arranged on the top of the exhaust nozzle, a sealing gasket is slidably arranged inside the fixed cylinder, a sliding block is arranged on the top of the sealing gasket, and a filtering structure is arranged on the bottom of the fixed cylinder. When in use, when the piston rod slides into the cylinder barrel, the piston rod will push the push rod to slide through the top plate, thereby causing the push rod to push the sealing gasket, the sealing gasket will squeeze the spring to cause the spring to deform, and at the same time the sealing gasket will discharge the air inside the fixed cylinder through the exhaust nozzle, thereby performing buffering and avoiding damage to the hydraulic cylinder.

[0005] Preferably, the filtering structure includes a mounting plate, which is mounted on the bottom of the fixed cylinder, a filter screen is arranged inside the mounting plate, a pin rod is fixedly arranged on the outer side of the mounting plate, the pin rod is embedded in the inner wall of the cylinder, a bolt is arranged at the bottom of the filter screen, one end of the bolt is threadedly connected to the fixed cylinder, when in use, the mounting plate is mounted on the top of the fixed cylinder by the pin rod, and then fixed by the bolt, the filter screen inside the mounting plate will filter to prevent impurities from clogging the exhaust nozzle.

[0006] Preferably, a slide groove is provided inside the fixing cylinder, and the sealing gasket and the spring are both located inside the slide groove. The sealing gasket and the spring are slidably installed inside the fixing cylinder to facilitate buffering.

[0007] Preferably, a plug-in groove is provided on the inner wall of the bottom of the cylinder, and the pin rod is embedded in the plug-in groove to facilitate installation of the mounting plate.

[0008] Preferably, a threaded hole is provided at the bottom of the fixing tube, and the bolt is threadedly connected to the fixing tube through the threaded hole, and the mounting plate is limited and fixed by the bolt.

[0009] Preferably, the cross section of the exhaust nozzle is processed into a tapered shape, and exhaust is performed through the exhaust nozzle, thereby buffering the hydraulic cylinder.

[0010] Compared with the prior art, the utility model adopts the above technical solution and has the following technical effects:

[0011] The utility model is provided with an exhaust nozzle, a spring, a sealing gasket and a sliding block. When in use, the mounting plate is mounted on the bottom of the fixed cylinder by a pin rod, and then the bolt is screwed to fix the mounting plate. The filter screen inside the mounting plate will filter to avoid clogging of the exhaust nozzle. When the piston rod moves upward, it will drive the push rod to move upward, and at the same time the deformed spring will push the sealing gasket to slide upward. When the piston rod is retracted, the piston rod will drive the push rod to slide downward through the top plate, thereby pushing the sealing gasket to slide, and the sealing gasket will squeeze the spring to deform the spring, and the spring will perform buffering. At the same time, an exhaust nozzle is provided inside the fixed cylinder, and the air outlet of the exhaust nozzle is small, so the sealing gasket pushes the air inside the fixed cylinder to be discharged slowly, thereby further performing buffering, avoiding damage to the hydraulic cylinder and reducing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0014] Figure 2 It is a side view structural schematic diagram of the utility model;

[0015] Figure 3 It is a side view structural schematic diagram of the exhaust nozzle of the utility model;

[0016] Figure 4 For the utility model Figure 1 Schematic diagram of the enlarged structure of A.

[0017] Explanation of the accompanying drawings: 1. Cylinder barrel; 2. Piston rod; 3. Top plate; 4. Cylinder head; 5. Push rod; 6. Push plate; 7. Fixed cylinder; 8. Exhaust nozzle; 9. Spring; 10. Sealing gasket; 11. Slider; 12. Mounting plate; 13. Filter screen; 14. Pin rod; 15. Bolt. DETAILED DESCRIPTION

[0018] 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.

[0019] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0020] It should be understood that the terms "length", "width", "up", "down", "front", "back", "first", "second", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0022] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0023] Example

[0024] In the prior art, the hydraulic cylinders currently used in the market have a relatively simple structure. When in use, the internal components cannot play a good buffering role and are easily damaged, thereby reducing the service life.

[0025] See also Figure 1-4The utility model provides a technical solution: a hydraulic oil cylinder with a buffer structure, including a cylinder barrel 1, a piston rod 2 is slidably arranged inside the cylinder barrel 1, a top plate 3 is fixedly arranged on the top of the piston rod 2, a cylinder cover 4 is fixedly arranged on the top of the cylinder barrel 1, a plurality of push rods 5 are fixedly arranged on the bottom of the top plate 3, a plurality of push rods 5 are fixedly arranged on the bottom of each of the push rods 5, a plurality of fixed cylinders 7 are fixedly arranged on the outside of the cylinder barrel 1, the push plate 6 is slidably installed inside the fixed cylinder 7, an exhaust nozzle 8 is fixedly arranged inside the fixed cylinder 7, and the cross-section of the exhaust nozzle 8 is increased. The hydraulic cylinder is cone-shaped, and exhaust is performed through the exhaust nozzle 8, so as to buffer the hydraulic oil cylinder. A spring 9 is arranged on the top of the exhaust nozzle 8, and a sealing gasket 10 is slidably arranged inside the fixed cylinder 7. A slide groove is opened inside the fixed cylinder 7, and the sealing gasket 10 and the spring 9 are both inside the slide groove. The sealing gasket 10 and the spring 9 are slidably installed inside the fixed cylinder 7 for convenient buffering. A slider 11 is arranged on the top of the sealing gasket 10, and a filtering structure is arranged at the bottom of the fixed cylinder 7. The filtering structure includes a mounting plate 12, and the mounting plate 12 is installed at the bottom of the fixed cylinder 7. A filter screen 13 is arranged inside the mounting plate 12, and a pin rod 14 is fixedly arranged on the outer side of the mounting plate 12. The pin rod 14 is embedded in the inner wall of the cylinder 1, and a plug-in groove is provided on the bottom inner wall of the cylinder 1. The pin rod 14 is embedded in the plug-in groove, which is convenient for installing the mounting plate 12. A bolt 15 is arranged at the bottom of the filter screen 13, and one end of the bolt 15 is threadedly connected to the fixing cylinder 7. A threaded hole is provided at the bottom of the fixing cylinder 7. The bolt 15 is threadedly connected to the fixing cylinder 7 through the threaded hole. The mounting plate 12 is limited and fixed by the bolt 15. When in use, The mounting plate 12 is mounted on the top of the fixed cylinder 7 through the pin rod 14, and then fixed by the bolt 15. The filter screen 13 inside the mounting plate 12 will filter to prevent impurities from clogging the exhaust nozzle 8. When the piston rod 2 slides into the cylinder 1, the piston rod 2 will push the push rod 5 to slide through the top plate 3, so that the push rod 5 pushes the sealing gasket 10, and the sealing gasket 10 will squeeze the spring 9 to deform the spring 9. At the same time, the sealing gasket 10 will also discharge the air inside the fixed cylinder 7 through the exhaust nozzle 8, thereby performing buffering and avoiding damage to the hydraulic cylinder.

[0026] Working principle or structural principle, when in use, the mounting plate 12 is installed on the bottom of the fixed cylinder 7 through the pin rod 14, and then the bolt 15 is tightened to fix the mounting plate 12, and the filter screen 13 inside the mounting plate 12 will filter to prevent the exhaust nozzle 8 from being blocked. When the piston rod 2 moves upward, it will drive the push rod 5 to move upward, and at the same time, the deformed spring 9 will push the sealing gasket 10 to slide upward. When the piston rod 2 is retracted, the piston rod 2 will drive the push rod 5 to slide downward through the top plate 3, thereby pushing the sealing gasket 10 to slide, and the sealing gasket 10 will squeeze the spring 9 to deform the spring 9, and the spring 9 will buffer. At the same time, an exhaust nozzle 8 is provided inside the fixed cylinder 7, and the air outlet of the exhaust nozzle 8 is small, so the sealing gasket 10 pushes the air inside the fixed cylinder 7 to be discharged slowly, thereby further buffering, avoiding damage to the hydraulic cylinder and reducing the service life.

[0027] So far, the embodiments of the utility model have been described in detail in conjunction with the accompanying drawings. It should be noted that the implementation methods not shown or described in the drawings or the body of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each component are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0028] Those skilled in the art will appreciate that the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All of these combinations and / or combinations fall within the scope of the present invention.

[0029] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. 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 buffer structure, comprising a cylinder barrel (1), characterized in that: A piston rod (2) is slidably arranged inside the cylinder barrel (1), a top plate (3) is fixedly arranged on the top of the piston rod (2), a cylinder cover (4) is fixedly arranged on the top of the cylinder barrel (1), a plurality of push rods (5) are fixedly arranged on the bottom of the top plate (3), a push plate (6) is fixedly arranged on the bottom of each of the plurality of push rods (5), a plurality of fixed cylinders (7) are fixedly arranged on the outside of the cylinder barrel (1), the push plate (6) is slidably mounted inside the fixed cylinder (7), an exhaust nozzle (8) is fixedly arranged inside the fixed cylinder (7), a spring (9) is arranged on the top of the exhaust nozzle (8), a sealing gasket (10) is slidably arranged inside the fixed cylinder (7), a slider (11) is arranged on the top of the sealing gasket (10), and a filtering structure is arranged at the bottom of the fixed cylinder (7).

2. A hydraulic cylinder with a buffer structure according to claim 1, characterized in that: The filtering structure comprises a mounting plate (12), the mounting plate (12) being mounted on the bottom of a fixed cylinder (7), a filter screen (13) being arranged inside the mounting plate (12), a pin rod (14) being fixedly arranged on the outside of the mounting plate (12), the pin rod (14) being embedded in the inner wall of the cylinder (1), a bolt (15) being arranged at the bottom of the filter screen (13), one end of the bolt (15) being threadedly connected to the fixed cylinder (7).

3. The hydraulic cylinder with a buffer structure according to claim 1, characterized in that: A slide groove is provided inside the fixing cylinder (7), and the sealing gasket (10) and the spring (9) are both located inside the slide groove.

4. The hydraulic cylinder with a buffer structure according to claim 2, characterized in that: The bottom inner wall of the cylinder barrel (1) is provided with an inserting groove, and the pin rod (14) is embedded in the inserting groove.

5. The hydraulic cylinder with a buffer structure according to claim 2, characterized in that: A threaded hole is provided at the bottom of the fixing cylinder (7), and the bolt (15) is threadedly connected to the fixing cylinder (7) through the threaded hole.

6. The hydraulic cylinder with a buffer structure according to claim 1, characterized in that: The cross section of the exhaust nozzle (8) is processed into a tapered shape.

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