CN210371796U - Pressure cylinder for buffer - Google Patents
Pressure cylinder for buffer Download PDFInfo
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- CN210371796U CN210371796U CN201920563173.2U CN201920563173U CN210371796U CN 210371796 U CN210371796 U CN 210371796U CN 201920563173 U CN201920563173 U CN 201920563173U CN 210371796 U CN210371796 U CN 210371796U
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Abstract
The utility model relates to a pressure cylinder for buffer, including adopting components of a whole that can function independently structure and fixed base, first cylinder body and second cylinder body in proper order, and first cylinder body and second cylinder body coaxial line arrange, wherein: a positioning groove is formed in the base, and one end of the first cylinder body is fixedly inserted into the positioning groove; the inner edge of the first cylinder body far away from one end of the base is provided with a positioning step, and one end of the second cylinder body is inserted and fixed in the first cylinder body and is abutted against the positioning step along the axial direction of the pressure cylinder. Through the upper and lower cylinder bodies and the base in split design, the processing and manufacturing difficulty is reduced, the production cost is reduced, all the accessories are stably connected after the pressure cylinder is assembled, and the use is reliable.
Description
Technical Field
The utility model relates to an elevator accessory makes technical field, especially relates to a pressure cylinder for buffer.
Background
The pressure cylinder on the market at present generally comprises cylinder body and base, and base and cylinder body are connected through the welding. The cylinder body comprises an upper cylinder body and a lower cylinder body, wherein the upper cylinder body is arranged at the top of the lower cylinder body, the inner diameter of the upper cylinder body is smaller than the inner diameter of the lower cylinder body, and the outer diameter of the top of the upper cylinder body is smaller than the outer diameter of the cylinder body, so that the top of the upper cylinder body is a spring seat.
The integrated pressure cylinder has the following defects: the existing integrated pressure cylinder is generally processed in the following two ways, namely, a tubular blank is formed by extrusion and then is turned and processed; and the other is that the cylindrical blank is formed by multiple turning processes. The former has a high requirement on steel, and the ductility of the steel needs to be sufficiently good due to integral extrusion molding, and the premise of improving the ductility of the steel is to reduce the strength of the steel, the reduction of the strength can cause the reduction of the safety performance of the buffer, the requirement on the precision of equipment by extrusion molding is high, the fraction defective of finished products is high, and the processing cost is increased. In the latter processing method, because the inner diameter and the outer diameter of the upper cylinder body and the lower cylinder body of the pressure cylinder are different, the difference between the inner diameter and the outer diameter of the cylinder bodies is small, the processing allowance is excessive, multiple times of processing and feeding are needed, the waste of materials is caused, the increase of the processing allowance can cause the increase of the weight of a blank, and the labor intensity and the labor danger of workers are increased. And the single guide sleeve is arranged in the upper cylinder body, the guide performance of the plunger cylinder arranged in the cylinder body is poor, and the instability of the whole buffer can be caused.
SUMMERY OF THE UTILITY MODEL
Based on this, this application provides a pressure cylinder for buffer, through the upper and lower cylinder body and the base of components of a whole that can function independently design, reduces the manufacturing degree of difficulty of pressure cylinder, reduces manufacturing cost.
The utility model provides a pressure cylinder for buffer, includes and adopts components of a whole that can function independently structure and fixed base, first cylinder body and second cylinder body in proper order, just first cylinder body with the coaxial line of second cylinder body arranges, wherein:
a positioning groove is formed in the base, and one end of the first cylinder body is fixedly inserted into the positioning groove;
the inner edge of one end, far away from the base, of the first cylinder body is provided with a positioning step, and one end of the second cylinder body is fixedly inserted into the first cylinder body and is abutted against the positioning step along the axial direction of the pressure cylinder.
In one embodiment, the second cylinder body comprises a straight cylinder section and a cylinder wall thickening section which are integrally structured and mutually connected, the cylinder wall thickening section is inserted into the first cylinder body, and the axial end surface of the cylinder wall thickening section is axially abutted against the positioning step along the pressure cylinder.
In one embodiment, the inner diameter of the cylinder wall thickened section is the same as that of the straight cylinder section, the outer diameter of the cylinder wall thickened section is larger than that of the straight cylinder section, and a transition step is formed at the joint of the cylinder wall thickened section and the straight cylinder section on the outer wall of the second cylinder body.
In one embodiment, an end surface of the first cylinder body, which is opposite to the end surface of the base, is aligned with the transition step.
In one embodiment, the end surface of the first cylinder body, which is opposite to the base, and the transition step are respectively provided with a welding groove, and a first welding seam is formed at the splicing part of the two welding grooves.
In one embodiment, the specific manner of the inserting and fixing is at least one of welding, threaded connection and interference fit.
In one embodiment, the inner wall of the second cylinder body is provided with a first guide sleeve groove, a first sealing groove, a second sealing groove and a second guide sleeve groove in sequence in a direction back to the first cylinder body.
In one embodiment, the size ratio of the first guide sleeve groove to the first seal groove to the second guide sleeve groove in the axial direction of the second cylinder body is 2:1:1: 2.
In one embodiment, the ratio of the radial height of the second guide sleeve groove to the wall of the second cylinder body groove adjacent to the second cylinder body end face section to the inner diameter of the second guide sleeve groove is 0.95-0.98: 1.
In one embodiment, the radial heights of the wall of the second cylinder body are the same except from the second guide sleeve groove to the section adjacent to the end face of the second cylinder body, the first guide sleeve groove, the first sealing groove, the second sealing groove and the second guide sleeve groove, and the inner diameter ratio of the wall of the second cylinder body to the wall of the second guide sleeve groove is 0.9-0.95: 1.
Other advantages of the present application will be further described in the detailed description.
Drawings
FIG. 1 is a cross-sectional view of a base in the axial direction of a pressure cylinder;
FIG. 2 is a cross-sectional view of the first cylinder block taken along the axial direction of the pressure cylinder;
FIG. 3 is a sectional view of the second cylinder block in the axial direction of the pressure cylinder;
FIG. 4 is a cross-sectional view of the pressure cylinder taken along its own axis;
fig. 5 is a sectional view of the shock absorber in the axial direction of the pressure cylinder.
Description of reference numerals:
1. a first cylinder; 11. positioning a step; 12. a flaring structure; 2. a second cylinder; 21. a straight cylinder section; 22. a cylinder wall thickening section; 211. a first guide sleeve groove; 221. a first seal groove; 222. a second seal groove; 212. a second guide sleeve groove; 23. a transition step; 24. a first weld; 3. a base; 31. and (6) positioning a groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
For a better description and illustration of embodiments of the application, reference may be made to one or more of the drawings, but additional details or examples for describing the drawings should not be construed as limiting the scope of any of the inventive concepts of the present application, the presently described embodiments, or the preferred versions.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
As shown in figures 1-5, the pressure cylinder for the buffer comprises a base 3, a first cylinder body 1 and a second cylinder body 2 which are of a split structure and are fixed in sequence, wherein the first cylinder body 1 and the second cylinder body 2 are arranged in a coaxial manner, and the pressure cylinder comprises: a positioning groove 31 is formed in the base 3, and one end of the first cylinder body 1 is inserted and fixed in the positioning groove 31; the inner edge of the first cylinder body 1 far away from one end of the base 3 is provided with a positioning step 11, and one end of the second cylinder body 2 is inserted and fixed in the first cylinder body 1 and is propped against the positioning step 11 along the axial direction of the pressure cylinder.
The whole pressure cylinder includes base 3, first cylinder body 1 and second cylinder body 2, and the three is mutually independent components of a whole that can function independently structure, can process base 3, first cylinder body 1 and second cylinder body 2 respectively in the production process, assembles the three for the pressure cylinder uses again. Because the base 3, the first cylinder body 1 and the second cylinder body 2 are smaller in size and simple in structure compared with the pressure cylinder, the manufacturing and processing time can be reduced, and blank materials are saved.
A positioning groove 31 is formed in the base 3, and one end of the first cylinder 1 can be inserted into the positioning groove 31 and fixedly connected with the base 3, or fixedly connected with the base 3 in a welding and fixing mode; the inner edge of base 3 one end is kept away from to first cylinder body 1 is equipped with location step 11, second cylinder body 2 can one end peg graft in first cylinder body 1 and with location step 11 along the axial counterbalance of pressure cylinder, thereby with first cylinder body 1 fixed connection, for guaranteeing that both are connected firmly, first cylinder body 1 and second cylinder body 2 can also adopt the welding, threaded connection, riveting or interference fit fixed connection, can also be the combination of multiple connected mode, for example adopt the mode of interference fit to install and weld again after taking one's place, further guarantee installation accuracy and bulk strength, multiple fixed connection mode can be according to the size of first cylinder body 1 with second cylinder body 2, factor such as material uses in a flexible way. The application provides a pressure cylinder can be used as the buffer accessory, and as shown in fig. 5 under the user state, the pressure cylinder is vertical to be put, and fixed mounting has first cylinder body 1 (being equivalent to lower cylinder body) on the base 3, and the one end fixed mounting that the base 3 was kept away from to first cylinder body 1 has second cylinder body 2 (being equivalent to last cylinder body).
In one embodiment, as shown in fig. 3, the second cylinder 2 includes a cylindrical section 21 and a wall-thickened section 22 which are integrally formed and connected with each other, the inner diameter of the wall-thickened section 22 is the same as that of the cylindrical section 21, the outer diameter of the wall-thickened section 22 is greater than that of the cylindrical section 21, and specifically, the ratio of the outer diameters of the wall-thickened section 22 and the cylindrical section 21 is 1.05-1.1: 1. When the second cylinder body 2 needs to be in plug fit with the first cylinder body 1, the cylinder wall thickening section 22 can be inserted into the first cylinder body 1, the axial end face of the cylinder wall thickening section 22 is axially abutted against the positioning step 11 along the pressure cylinder, the outer diameter of the cylinder wall thickening section 22 can be equal to the inner diameter of the positioning step 11, or the outer diameter of the cylinder wall thickening section 22 is slightly larger than the inner diameter of the positioning step 11, so that the two are fixedly connected through interference fit.
In order to ensure the first cylinder body 1 and the second cylinder body 2 are connected stably, in one embodiment, the outer periphery of the cylinder wall thickening section 22 is provided with an external thread, correspondingly, the inner wall of the positioning step 11 is provided with an internal thread, and when the cylinder wall thickening section 22 is inserted into the first cylinder body 1, the cylinder wall thickening section is fastened and connected through the matching of the internal thread and the external thread.
To facilitate the insertion of the first cylinder 1 and the second cylinder 2, in one embodiment, as shown in fig. 2, the inner wall of the first cylinder 1 is provided with a flared structure 12 on the side facing the second cylinder 2. The flaring structure 12 starts from the end face of the positioning step 11 facing the second cylinder body 2 and opens at the end face of the first cylinder body 1 facing the second cylinder body 2, and the size ratio of the flaring structure 12 to the first cylinder body 1 in the axial direction of the first cylinder body 1 is 0.03-0.1: 1. The inner diameters of the rest parts of the first cylinder body 1 except the flaring structure 12 and the positioning step 11 are the same, and the ratio of the inner diameter of the first cylinder body to the inner diameter of the second cylinder body 2 is 1.2-1.25: 1.
Since the outer diameter of the cylinder wall thickened section 22 of the second cylinder body 2 is larger than that of the straight cylinder section 21, in one embodiment, as shown in fig. 3, a transition step 23 is formed at the joint of the cylinder wall thickened section 22 and the straight cylinder section 21 on the outer wall of the second cylinder body 2, and when the second cylinder body 2 is inserted and fixed in the first cylinder body 1, the end surface of the first cylinder body 1, which is opposite to one end of the base 3, is aligned with the transition step 23. In order to ensure that the first cylinder body 1 and the second cylinder body 2 are connected stably, a welding and fixing connection mode can be further adopted at the matching end of the first cylinder body 1 and the second cylinder body 2, in one embodiment, as shown in fig. 4, a welding groove is respectively arranged on the end surface of one end of the first cylinder body 1, which is back to the base 3, and the transition step 23, and the welding and fixing of the first cylinder body 1 and the second cylinder body 2 are completed at the welding groove and a first welding seam 24 is formed. The welding groove is preset at the end face of the first cylinder body 1 and the transition step 23, so that the preparation work before welding in the installation process can be simplified, and the welding and fixing quality is ensured.
When the pressure cylinder is used as a fitting of a shock absorber, as shown in fig. 5, one or more guide sleeves need to be arranged inside the pressure cylinder in order to match the relative movement of other parts of the shock absorber, and one or more sealing rings need to be arranged inside the pressure cylinder in order to meet the overall sealing requirement of the shock absorber, so that in one embodiment, as shown in fig. 4, a first guide sleeve groove 211, a first sealing groove 221, a second sealing groove 222 and a second guide sleeve groove 212 are sequentially and annularly distributed on the inner wall of the second cylinder body 2 in the direction away from the first cylinder body 1, so as to accommodate the corresponding guide sleeves and sealing rings. Because the height of the guide sleeve is greater than that of the seal ring, the dimension of the guide sleeve groove is greater than that of the seal groove in the axial direction of the second cylinder body 2, specifically, the dimension ratio of the first guide sleeve groove 211, the first seal groove 221, the second seal groove 222 and the second guide sleeve groove 212 in the axial direction of the second cylinder body 2 is 2:1:1:2, wherein the inner diameters of the first guide sleeve groove 211 and the second guide sleeve groove 212 are the same, the inner diameters of the first seal groove 221 and the second seal groove 222 are the same, and the inner diameter ratio of the guide sleeve groove to the seal groove is 1-1.05: 1
Due to the arrangement of a plurality of guide sleeve grooves and seal grooves, the radial height of the groove wall of the second cylinder body 2 changes along the axial direction of the second cylinder body 2, and in one embodiment, as shown in fig. 3, the ratio of the radial height of the second guide sleeve groove 212 to the groove wall of the second cylinder body 2 adjacent to the end face section of the second cylinder body 2 to the inner diameter of the second guide sleeve groove 212 is 0.95-0.98: 1. The radial heights of the walls of the second cylinder body 2 are the same except for the section from the second guide sleeve groove 212 to the end face adjacent to the second cylinder body 2, the first guide sleeve groove 211, the first seal groove 221, the second seal groove 222 and the second guide sleeve groove 212, and the inner diameter ratio of the walls of the second cylinder body 2 to the second guide sleeve groove 212 is 0.9-0.95: 1.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides a pressure cylinder for buffer, its characterized in that, includes and adopts components of a whole that can function independently structure and fixed base, first cylinder body and second cylinder body in proper order, just first cylinder body with the coaxial line of second cylinder body arranges, wherein:
a positioning groove is formed in the base, and one end of the first cylinder body is fixedly inserted into the positioning groove;
the inner edge of one end, far away from the base, of the first cylinder body is provided with a positioning step, and one end of the second cylinder body is fixedly inserted into the first cylinder body and is abutted against the positioning step along the axial direction of the pressure cylinder.
2. The pressure cylinder for a shock absorber according to claim 1, wherein the second cylinder body includes a straight cylinder section and a cylinder wall thickening section which are integrally formed and joined to each other, the cylinder wall thickening section is inserted into the first cylinder body, and an axial end surface of the cylinder wall thickening section is axially abutted against the positioning step along the pressure cylinder.
3. The pressure cylinder for a shock absorber according to claim 2, wherein the cylinder wall thickened section has the same inner diameter as the straight cylinder section, the outer diameter of the cylinder wall thickened section is larger than the outer diameter of the straight cylinder section, and a transition step is formed at a joining portion of the cylinder wall thickened section and the straight cylinder section on the outer wall of the second cylinder block.
4. A cylinder for a shock absorber as set forth in claim 3 wherein an end surface of said first cylinder block facing away from said base is aligned with said transition step.
5. The pressure cylinder for the buffer as claimed in claim 4, wherein the end surface of the first cylinder body facing away from the base and the transition step are respectively provided with a welding groove, and the splicing parts of the two welding grooves form a first welding seam.
6. The pressure cylinder for a shock absorber as set forth in claim 1, wherein said plug-in attachment is at least one of welding, screwing, and interference fitting.
7. The pressure cylinder for a shock absorber according to claim 1, wherein the inner wall of the second cylinder block is provided with a first guide sleeve groove, a first seal groove, a second seal groove and a second guide sleeve groove in this order in a direction away from the first cylinder block.
8. The pressure cylinder for a shock absorber according to claim 7, wherein the first guide sleeve groove, the first seal groove, the second seal groove and the second guide sleeve groove have a dimension ratio of 2:1:1:2 in the axial direction of the second cylinder body itself.
9. The pressure cylinder for a shock absorber of claim 7, wherein a ratio of a radial height of the second guide sleeve groove to a wall of the second cylinder bore adjacent the second cylinder bore end face section to an inner diameter of the second guide sleeve groove is 0.95 to 0.98: 1.
10. The pressure cylinder for a shock absorber according to claim 9, wherein the radial height of the wall of the second cylinder body is the same except for the second guide sleeve groove to a position adjacent to the second cylinder body end face section and the first guide sleeve groove, the first seal groove, the second seal groove and the second guide sleeve groove, and the inner diameter ratio of the second guide sleeve groove is 0.9 to 0.95: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920563173.2U CN210371796U (en) | 2019-04-23 | 2019-04-23 | Pressure cylinder for buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920563173.2U CN210371796U (en) | 2019-04-23 | 2019-04-23 | Pressure cylinder for buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210371796U true CN210371796U (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920563173.2U Active CN210371796U (en) | 2019-04-23 | 2019-04-23 | Pressure cylinder for buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210371796U (en) |
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2019
- 2019-04-23 CN CN201920563173.2U patent/CN210371796U/en active Active
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