Novel hydraulic oil cylinder flange welding structure
By introducing extended bottom ring, annular step and step ring sleeve into the welding structure of the hydraulic cylinder flange and cylinder barrel, and using V-shaped welds to fix it, the problems of welds are solved, and processing efficiency and product quality are improved.
Patent Information
- Application Number
- CN202422168672.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-04
AI Technical Summary
After the existing hydraulic cylinder flange is welded to the cylinder barrel, the weld is easily transmitted to the inside, resulting in a long processing cycle, low efficiency, and easy pore defects, affecting the working life of the cylinder.
A new type of hydraulic cylinder flange welding structure is adopted, including flange, cylinder, V-shaped weld, extended bottom ring, annular step and step ring sleeve. The extension bottom ring is plugged into the inner side of the cylinder end and connected to the annular step to form a step ring sleeve, and the extension bottom ring is connected to ensure sealing. The flange and cylinder are then fixed by welding the V-shaped weld.
This structure ensures that the welds are not transmitted to the inside, avoids rolling boring processing, reduces the probability of air holes, reduces processing processes and costs, and improves production efficiency and product quality.
Smart Images
Figure CN222991832U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of cylinder flange welding, for example, to a novel hydraulic cylinder flange welding structure. Background Art
[0002] The cylinder barrel is the main component of the hydraulic cylinder. In order to facilitate the adaptation work, it is often necessary to weld a flange on the end of the cylinder barrel.
[0003] At present, after most of the welding between the flange and the cylinder barrel, the weld will penetrate into the inner side of the joint between the two, and then a lathe is needed to process the inner hole to a size that can be roll-bored. The processing cycle is long and the efficiency is low. In addition, the current butt welding method is prone to porosity defects at the root, which seriously affects the downstream processes and the service life of the entire cylinder. Utility Model Content
[0004] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.
[0005] The disclosed embodiment provides a novel hydraulic cylinder flange welding structure, which has a simple and reasonable structure, can reduce the number of processes and increase efficiency.
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0007] A novel hydraulic cylinder flange welding structure comprises a flange, a cylinder barrel and a V-shaped weld. An extended bottom ring is arranged on the inner side of one end of the flange, and the extended bottom ring is inserted into the inner side of the end of the cylinder barrel. An annular step is arranged on the end of the cylinder barrel, and a step ring sleeve is integrally formed on one side of the annular step. The step ring sleeve is sleeved with the extended bottom ring and butted with the annular step. The end side of the flange and the end side of the cylinder barrel are both provided with weld bevels, and a V-shaped weld is filled between the weld bevels. The flange and the cylinder barrel are connected by sleeve-jointing the step ring sleeve with the extended bottom ring, and then welded. The V-shaped weld fixes the two together, and the sealing pressure-fitting extended bottom ring of the step ring sleeve can ensure the sealing of the flange and cylinder connection due to thermal expansion and contraction during welding, avoiding the occurrence of pores during welding that affect the downstream process and the life of the cylinder. The welding point between the flange and the cylinder barrel is separated from the inner side by a step ring sleeve and an extended bottom ring, which can ensure that the weld will not be transmitted to the inner side, and there is no need for rolling boring after welding, which further reduces the probability of pores, reduces processing steps and costs, and improves production efficiency and product quality.
[0008] Furthermore, the thickness of the extended bottom ring is 1.5 mm, the thickness of the step ring sleeve is 1 mm, and the overall thickness of the extended bottom ring and the annular step is 2.5 mm.
[0009] Furthermore, the inner diameter of the stepped ring sleeve is adapted to the outer diameter of the extended bottom ring, so that the two can be adaptively sleeved without gaps, which will affect the stability of the connection between the flange and the cylinder barrel.
[0010] Furthermore, the angles of the weld slopes are all 10°, and the bottom width of the V-shaped weld is adapted to the overall width of the annular step and the link sleeve and is 4 mm, so that the bottom of the V-shaped weld can completely fill the space between the weld slopes, ensuring a more stable connection between the flange and the cylinder barrel.
[0011] A novel hydraulic cylinder flange welding structure provided by an embodiment of the present disclosure can achieve the following technical effects:
[0012] In the present utility model, the two are fixed by welding a V-shaped weld. The stepped ring sleeve is hermetically pressed against the extended bottom ring, which can ensure the sealing performance of the connection between the flange and the cylinder barrel during the welding process due to thermal expansion and contraction, and prevent the occurrence of air holes during the welding process, which may affect the downstream process and the service life of the cylinder. There is a stepped ring sleeve and an extended bottom ring between the welded joint of the flange and the cylinder and the inner side, which can ensure that the weld will not penetrate to the inner side. Therefore, after welding, boring is no longer required, further reducing the probability of air holes, reducing the processing procedures and costs, while improving the production efficiency and product quality.
[0013] The above general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a proportional limitation. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.
[0015] Figure 1 is a schematic diagram of a novel hydraulic cylinder flange welding structure of the present utility model;
[0016] Figure 2 is a schematic cross-sectional view of a novel hydraulic cylinder flange welding structure of the present utility model;
[0017] Figure 3 is a schematic diagram of the structure at A in a novel hydraulic cylinder flange welding structure of the present utility model.
[0018] Reference numerals:
[0019] 1, flange; 2, cylinder barrel; 3, weld slope; 4, V-shaped weld; 5, extended bottom ring; 6, annular step; 7, stepped ring sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] In order to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The attached drawings are for reference and illustration only and are not used to limit the embodiments of the present disclosure.
[0021] A welding structure of a novel hydraulic cylinder flange 1 includes a flange 1, a cylinder barrel 2, and a V-shaped weld 4. An extended bottom ring 5 is provided inside one end of the flange 1. The thickness of the extended bottom ring 5 is 1.5 mm. The extended bottom ring 5 is inserted into the inner side of the end of the cylinder barrel 2. A circular step 6 is provided at the end of the cylinder barrel 2. A step ring sleeve 7 is integrally formed on one side of the circular step 6. The thickness of the step ring sleeve 7 is 1 mm. The step ring sleeve 7 sleeved on the extended bottom ring 5 and is butted against the circular step 6. The overall thickness of the butt joint of the extended bottom ring 5 and the circular step 6 is 2.5 mm. The inner diameter of the step ring sleeve 7 is adapted to the outer diameter of the extended bottom ring 5 so that the two can be adaptively sleeved without leaving a gap, which affects the stability of the connection between the flange 1 and the cylinder barrel 2.
[0022] Weld bevels 3 are provided on both the end side of the flange 1 and the end side of the cylinder barrel 2, and a V-shaped weld 4 is filled between the weld bevels 3. The angles of the weld bevels 3 are both 10°. The bottom width of the V-shaped weld 4 is adapted to the overall width of the circular step 6 and the link sleeve and is 4 mm, so that the bottom of the V-shaped weld fills the space between the weld bevels 3 completely, ensuring a more stable connection between the flange 1 and the cylinder barrel 2. The flange 1 and the cylinder barrel 2 are connected by sleeving the extended bottom ring 5 with the step ring sleeve 7, and then fixed by welding the V-shaped weld 4. The method of sealing and pressing the extended bottom ring 5 by the step ring sleeve 7 can ensure the sealing performance of the connection between the flange 1 and the cylinder barrel 2 during the welding process due to thermal expansion and contraction, and avoid the occurrence of pores during the welding process, which may affect the downstream process and the service life of the hydraulic cylinder. There is a step ring sleeve 7 and an extended bottom ring 5 between the welded joint of the flange 1 and the cylinder barrel 2 and the inner side, which can ensure that the weld will not penetrate to the inner side. Therefore, after welding, boring processing is no longer required, further reducing the probability of pores, reducing the processing procedures and costs, and improving the production efficiency and product quality at the same time.
[0023] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure, enabling those skilled in the art to practice them. Parts and features of some embodiments can be included in or replaced by parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.
Claims
1. A new type of hydraulic cylinder flange welding structure, characterized in that: It includes a flange, a cylinder barrel, and a V-shaped weld. An extended bottom ring is arranged on the inner side of one end of the flange, and the extended bottom ring is inserted into the inner side of the end of the cylinder barrel. An annular step is arranged on the end of the cylinder barrel, and a step ring sleeve is integrally formed on one side of the annular step. The step ring sleeve is sleeved with the extended bottom ring and butt-jointed with the annular step. The flange end side and the cylinder barrel end side are both provided with weld bevels, and the V-shaped weld is filled between the weld bevels.
2. A new type of hydraulic cylinder flange welding structure according to claim 1, characterized in that: The thickness of the extended bottom ring is 1.5 mm, the thickness of the step ring sleeve is 1 mm, and the overall thickness of the extended bottom ring and the annular step is 2.5 mm.
3. The novel hydraulic cylinder flange welding structure according to claim 1 is characterized in that: The inner diameter of the step ring sleeve is matched with the outer diameter of the extended bottom ring.
4. The novel hydraulic cylinder flange welding structure according to claim 1 is characterized in that: The angle of the weld bevel is 10°, and the bottom width of the V-shaped weld is adapted to the overall width of the annular step and the link sleeve and is 4 mm.