Split type hydraulic cylinder barrel structure

Abstract

The utility model relates to the technical field of hydraulic oil cylinder, concretely relates to a split type hydraulic oil cylinder cylinder structure, include: main cylinder and split cylinder section, one end of main cylinder and split cylinder section all is fixedly connected with connecting plate, the other end of main cylinder is fixedly connected with outer thread, the other end of split cylinder section is fixedly connected with internal thread, and the outer thread is connected between internal thread, the connecting place of main cylinder and split cylinder section is provided with sealing ring, and the inner wall of main cylinder and split cylinder section all is equipped with wear -resisting layer, and the cylinder is divided into main cylinder and split cylinder section, and the transportation and storage difficulty of long stroke oil cylinder is reduced greatly, especially suitable for super long stroke hydraulic cylinder, effectively reduces transportation cost, when the cylinder partial damage, only need to replace the split cylinder section of damage, do not need to replace as a whole, reduce maintenance cost and time, and split cylinder section can be designed for multiple length specifications, and the modularization adjustment of stroke is realized through the free combination of thread connection, and the demand of different application scenes is adapted.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically to a split-type hydraulic cylinder barrel structure. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It has a simple structure and reliable operation. When used to achieve reciprocating motion, it eliminates the need for a speed reduction device and has no transmission backlash, resulting in smooth movement. Therefore, it is widely used in the hydraulic systems of various machines.

[0003] Traditional hydraulic cylinders are mostly integral structures with fixed lengths, which take up a lot of space during transportation and storage, especially for long-stroke cylinders, resulting in high transportation costs.

[0004] At the same time, when a part of the cylinder is damaged, the entire cylinder needs to be replaced, resulting in high maintenance costs. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a split hydraulic cylinder structure, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a split hydraulic cylinder barrel structure, including: a main cylinder barrel and a split cylinder section. A connecting plate is fixedly connected to one end of both the main cylinder barrel and the split cylinder section. An external thread is fixedly connected to the other end of the main cylinder barrel, and an internal thread is fixedly connected to the other end of the split cylinder section. The external thread and the internal thread are threaded together. A sealing ring is provided at the connection between the main cylinder barrel and the split cylinder section. A wear-resistant layer is provided on the inner wall of both the main cylinder barrel and the split cylinder section.

[0007] Furthermore, the bottom end of the external thread is provided with a first annular groove, and the bottom end of the internal thread is provided with a second annular groove.

[0008] Furthermore, the sealing ring is engaged inside the first annular groove, and the sealing ring and the second annular groove are connected to each other.

[0009] Furthermore, the wear-resistant layer is a chrome-plated layer with a thickness of 0.05-0.1mm, and the outer walls of the main cylinder and the split cylinder section are all provided with anti-corrosion coatings.

[0010] Furthermore, a top plate is provided at one end of the main cylinder barrel, and a bottom plate is provided at one end of the split cylinder section. The top plate and the bottom plate are respectively sealed and connected to the main cylinder barrel and the split cylinder section through a fixing assembly.

[0011] Furthermore, the connecting plate is integrally formed with the main cylinder and the split cylinder section, and through holes are opened at the four corners of the connecting plate.

[0012] Furthermore, the fixing component includes a threaded rod inserted into the middle of the through hole, and both ends of the threaded rod are threaded with fixing nuts.

[0013] The technical solution provided by this utility model has the following advantages compared with the known prior art: 1. By dividing the cylinder into a main cylinder and separate cylinder sections, the transportation and storage difficulty of long-stroke hydraulic cylinders is greatly reduced, especially suitable for ultra-long-stroke hydraulic cylinders, effectively reducing transportation costs. When the cylinder is partially damaged, only the damaged separate cylinder section needs to be replaced, without replacing the entire cylinder, significantly reducing maintenance costs and time. Furthermore, the separate cylinder sections can be designed in various length specifications and can be freely combined through threaded connections to achieve modular adjustment of the stroke, adapting to the needs of different application scenarios. 2. The connection is made by the mating of external and internal threads, combined with the double sealing structure of sealing ring and annular groove, to ensure no leakage at the connection and meet the requirements of high pressure conditions. The chrome-plated wear-resistant layer on the inner wall of the main cylinder and the split cylinder section reduces piston friction loss, and the anti-corrosion coating on the outer wall enhances environmental adaptability, thus improving the overall service life of the hydraulic cylinder. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model; Figure 3 This is a schematic diagram of the main cylinder structure of this utility model; Figure 4 This is a schematic diagram of the segmented cylinder structure of this utility model.

[0016] The labels in the diagram represent: 1. Main cylinder barrel; 101. External thread; 102. First annular groove; 2. Split cylinder section; 201. Internal thread; 202. Second annular groove; 3. Connecting plate; 301. Through hole; 4. Sealing ring; 5. Base plate; 6. Top plate; 7. Fixing assembly; 701. Threaded rod; 702. Fixing nut. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] The present invention will be further described below with reference to the embodiments. Example 1:

[0019] Reference Figure 1-4 This is the first embodiment of the present invention, which discloses a split hydraulic cylinder structure, including: a main cylinder 1 and a split cylinder section 2. One end of the main cylinder 1 and the split cylinder section 2 are fixedly connected to a connecting plate 3. The other end of the main cylinder 1 is fixedly connected to an external thread 101, and the other end of the split cylinder section 2 is fixedly connected to an internal thread 201. The external thread 101 and the internal thread 201 are threadedly connected. A sealing ring 4 is provided at the connection between the main cylinder 1 and the split cylinder section 2. The inner walls of the main cylinder 1 and the split cylinder section 2 are provided with a wear-resistant layer.

[0020] By dividing the cylinder into a main cylinder 1 and a split cylinder section 2, the transportation and storage difficulty of long-stroke hydraulic cylinders is greatly reduced. This is especially suitable for ultra-long stroke hydraulic cylinders, effectively reducing transportation costs. When the cylinder is partially damaged, only the damaged main cylinder 1 or split cylinder section 2 needs to be replaced, without the need for complete replacement. This significantly reduces maintenance costs and time. Furthermore, the split cylinder section 2 can be designed in various length specifications and can be freely combined through threaded connections to achieve modular adjustment of the stroke, adapting to the needs of different application scenarios. Example 2:

[0021] Reference Figure 1-4 This is the second embodiment of the present invention, which differs from the first embodiment in that: The bottom end of the external thread 101 is provided with a first annular groove 102, and the bottom end of the internal thread 201 is provided with a second annular groove 202. The sealing ring 4 is snapped into the inside of the first annular groove 102, and the sealing ring 4 and the second annular groove 202 are connected to each other. The wear-resistant layer is a chrome-plated layer with a thickness of 0.05-0.1mm. The outer walls of the main cylinder barrel 1 and the split cylinder section 2 are both provided with anti-corrosion coatings.

[0022] One end of the main cylinder barrel 1 is provided with a top plate 6, and one end of the split cylinder section 2 is provided with a bottom plate 5. The top plate 6 and the bottom plate 5 are respectively sealed to the main cylinder barrel 1 and the split cylinder section 2 through a fixing component 7. The connecting plate 3 is integrally formed with the main cylinder barrel 1 and the split cylinder section 2. Through holes 301 are provided at the four corners of the connecting plate 3. The fixing component 7 includes a threaded rod 701, which is inserted into the middle of the through hole 301. Both ends of the threaded rod 701 are threaded with fixing nuts 702.

[0023] The connection between the external thread 101 and the internal thread 201, combined with the double sealing structure of the sealing ring 4 and the annular groove, ensures that there is no leakage at the connection and meets the requirements of high pressure conditions. The chrome-plated wear-resistant layer on the inner wall of the main cylinder barrel 1 and the split cylinder section 2 reduces piston friction loss, and the anti-corrosion coating on the outer wall enhances environmental adaptability, thus improving the overall service life of the hydraulic cylinder.

[0024] The remaining structure is the same as that in Example 1.

[0025] The workflow of this utility model is as follows: First, snap the sealing ring 4 into the first annular groove 102. Then, align the external thread 101 of the main cylinder barrel 1 with the internal thread 201 of the split cylinder section 2 and tighten it until the sealing ring 4 is completely pressed into the first annular groove 102 and the second annular groove 202 to form a seal. Secondly, the threaded rod 701 is inserted through the through hole 301 of the connecting plate 3, and the two ends are locked with the fixing nut 702 to ensure that the top plate 6 and the bottom plate 5 are sealed to the cylinder. After assembly, a pressure test is required to confirm that there is no leakage at the sealing ring 4 and the threaded connection. The external thread 101 and the internal thread 201 are connected by a double sealing structure of the sealing ring 4 and the annular groove to ensure that there is no leakage at the connection and to meet the requirements of high pressure conditions. The chrome-plated wear-resistant layer on the inner wall of the main cylinder 1 and the split cylinder section 2 reduces piston friction loss, and the anti-corrosion coating on the outer wall enhances environmental adaptability and improves the overall service life of the oil cylinder. Finally, during disassembly, first loosen the fixing nut 702, separate the connecting plate 3, and then rotate the split cylinder section 2 in the opposite direction to remove the partially damaged section. After replacing the new split cylinder section 2, repeat the assembly steps to restore its use. Select split cylinder sections 2 of different lengths according to requirements, and stack them onto the main cylinder barrel 1 through threaded connections. Finally, tighten the fixing component 7. By setting the cylinder barrel into the main cylinder barrel 1 and the split cylinder section 2, the transportation and storage difficulty of long-stroke hydraulic cylinders is greatly reduced, especially suitable for ultra-long stroke hydraulic cylinders, effectively reducing transportation costs. When the cylinder barrel is partially damaged, only the damaged main cylinder barrel 1 or the split cylinder section 2 needs to be replaced, without replacing the whole cylinder, which significantly reduces maintenance costs and time. Moreover, the split cylinder section 2 can be designed in various length specifications and can be freely combined through threaded connections to achieve modular adjustment of the stroke and adapt to different application scenarios.

[0026] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A split-type hydraulic cylinder barrel structure, characterized in that, include: The main cylinder (1) and the split cylinder section (2) are provided with a connecting plate (3) fixedly connected to one end of the main cylinder (1) and the split cylinder section (2). The other end of the main cylinder (1) is fixedly connected with an external thread (101), and the other end of the split cylinder section (2) is fixedly connected with an internal thread (201). The external thread (101) and the internal thread (201) are threadedly connected. A sealing ring (4) is provided at the connection between the main cylinder (1) and the split cylinder section (2). The inner walls of the main cylinder (1) and the split cylinder section (2) are provided with a wear-resistant layer.

2. The split-type hydraulic cylinder barrel structure according to claim 1, characterized in that, The bottom end of the external thread (101) is provided with a first annular groove (102), and the bottom end of the internal thread (201) is provided with a second annular groove (202).

3. The split-type hydraulic cylinder barrel structure according to claim 2, characterized in that, The sealing ring (4) is engaged inside the first annular groove (102), and the sealing ring (4) and the second annular groove (202) are connected to each other.

4. The split-type hydraulic cylinder barrel structure according to claim 1, characterized in that, The wear-resistant layer is a chromium-plated layer with a thickness of 0.05-0.1mm. The outer walls of the main cylinder (1) and the split cylinder section (2) are both provided with anti-corrosion coatings.

5. The split-type hydraulic cylinder barrel structure according to claim 1, characterized in that, The main cylinder (1) is provided with a top plate (6) at one end, and the split cylinder section (2) is provided with a bottom plate (5) at one end. The top plate (6) and the bottom plate (5) are respectively sealed to the main cylinder (1) and the split cylinder section (2) by a fixing component (7).

6. The split-type hydraulic cylinder barrel structure according to claim 5, characterized in that, The connecting plate (3) is integrally formed with the main cylinder (1) and the split cylinder section (2), and through holes (301) are provided at the four corners of the connecting plate (3).

7. The split-type hydraulic cylinder barrel structure according to claim 6, characterized in that, The fixing component (7) includes a threaded rod (701), which is inserted into the middle of the through hole (301), and both ends of the threaded rod (701) are threaded with fixing nuts (702).

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