CN210150540U - Plunger cylinder for buffer - Google Patents
Plunger cylinder for buffer Download PDFInfo
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- CN210150540U CN210150540U CN201920561528.4U CN201920561528U CN210150540U CN 210150540 U CN210150540 U CN 210150540U CN 201920561528 U CN201920561528 U CN 201920561528U CN 210150540 U CN210150540 U CN 210150540U
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Abstract
The utility model relates to a plunger cylinder for a buffer, which comprises a cylinder body, wherein a first end cover is arranged at one axial end of the cylinder body, a second end cover is arranged at the other axial end of the cylinder body, and the cylinder body, the first end cover and the second end cover are of a split structure; the first end cover is provided with a first positioning ring at one side facing the cylinder, the second end cover is provided with a second positioning ring at one side facing the cylinder, and the first positioning ring and the second positioning ring are respectively inserted into corresponding ends of the cylinder; the first end cover and the second end cover are the same or different in fixing mode with the barrel, and the fixing mode is at least one of welding, threaded connection and interference fit. The barrel, the first end cover and the second end cover which are designed in a split structure can simplify the processing and manufacturing process of the plunger barrel, and all accessories are stably connected after the plunger barrel is assembled, so that the plunger barrel is reliable to use.
Description
Technical Field
The utility model relates to an elevator accessory makes technical field, especially relates to a plunger section of thick bamboo for buffer.
Background
The plunger barrel on the market at present generally comprises a nozzle, a plunger body, an end cover and a spring seat 4, and the same blank is processed for multiple times to manufacture an integrated structure. The middle of the plunger barrel is a plunger body, an oil nozzle is arranged at the top of the plunger body and is used for being matched with an adjusting rod with a taper, an end cover is arranged at the bottom of the plunger body and is used for being connected with a buffer pad, and a spring seat is arranged at the bottom protruding part of the plunger body.
Because the wall thickness of the plunger barrel is too small, the inner diameter of the plunger body is smaller than the inner diameters of the oil nozzle and the end cover, the blank size and the finished product size are greatly different, the machining allowance is too large, multiple times of machining feeding is needed, the material waste is caused, the blank weight is increased due to the increase of the machining allowance, and the labor intensity and the labor danger of workers are increased. The latter can cause the internal diameter of plunger body to add man-hour, and the process is loaded down with trivial details, takes trouble hard, from blank to the finished product, just can accomplish processing through processing feed many times, so integral type pressure cylinder can cause the waste of material and waste time and energy, and production speed is too slow to cause the increase of processing manufacturing cost.
SUMMERY OF THE UTILITY MODEL
Based on this, this application provides a simple to process manufacturing, convenient to use's plunger section of thick bamboo for the buffer.
A plunger cylinder for a buffer comprises a cylinder body, wherein a first end cover is arranged at one axial end of the cylinder body, a second end cover is arranged at the other axial end of the cylinder body,
the cylinder body, the first end cover and the second end cover are of a split structure;
the first end cover is provided with a first positioning ring at one side facing the cylinder, the second end cover is provided with a second positioning ring at one side facing the cylinder, and the first positioning ring and the second positioning ring are respectively inserted into corresponding ends of the cylinder;
the first end cover and the second end cover are the same or different in fixing mode with the barrel, and the fixing mode is at least one of welding, threaded connection and interference fit.
In one embodiment, one end of the cylinder body, at which the first end cover is installed, is a first end, a first annular groove is formed in the inner wall of the cylinder body at the first end, and the first annular groove is opened in the end face of the first end; the first positioning ring is inserted in the first annular groove.
In one embodiment, the first end cap is a ring-shaped structure as a whole; the first end cover sequentially comprises a first annular cover plate and a first positioning ring in the axial direction of the cylinder body, and the first annular cover plate and the first positioning ring are of an integral structure;
the first annular cover plate is attached to the end face of the first end, and the first annular cover plate extends to the periphery of the cylinder in the radial direction to form a spring seat.
In one embodiment, a welding groove is formed in the outer edge of the first end of the cylinder, and a first welding seam is formed between the welding groove and the first annular cover plate.
In one embodiment, an annular cushion accommodating groove is formed in an inner wall of the first end cover, and the cushion accommodating groove corresponds to the first positioning ring in position or is located at a junction of the first annular cover plate and the first positioning ring.
In one embodiment, the first annular cover plate is provided with an annular limiting step on one side facing the cylinder, and the spring seat is arranged on the periphery of the limiting step.
In one embodiment, the inner wall of the first annular cover plate is provided with a flaring structure at one side facing away from the cylinder body.
In one embodiment, the smallest inner diameter of the first end cap is smaller than the inner diameter of the cylinder.
In one embodiment, the end of the cylinder body, on which the second end cover is mounted, is a second end, a second annular groove is arranged on the inner wall of the cylinder body at the second end, and the second annular groove is arranged on the end face of the second end; the second positioning ring is inserted in the second annular groove.
In one embodiment, the second end cap is of generally annular configuration; the second end cover sequentially comprises a second annular cover plate and a second positioning ring in the axial direction of the cylinder body, and the second annular cover plate and the second positioning ring are of an integral structure;
the second annular cover plate is attached to the end face of the second end, the outer edge of the second end and the outer edge of the second annular cover plate are provided with welding grooves matched in position, and a second welding seam is formed between the welding grooves.
Other advantages of the present application will be further described in the detailed description.
Drawings
FIG. 1 is an axial cross-sectional view of the first end cap along the barrel;
FIG. 2 is an axial cross-sectional view of the second end cap along the barrel;
FIG. 3 is a cross-sectional view of the cartridge in its own axial direction;
FIG. 4 is a cross-sectional view of the plunger barrel taken along the axial direction of the barrel;
fig. 5 is a sectional view of the damper taken along the axial direction of the cylinder.
Description of reference numerals: 1. a first end cap; 11. a first positioning ring; 12. a first annular cover plate; 13. a cushion pad accommodating groove; 14. a spring seat; 2. a second end cap; 21. a second positioning ring; 22. a second annular cover plate; 3. a barrel; 31. a first annular groove; 32. a second annular groove; 33. a first weld; 34. a second weld.
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 fig. 1 to 5, a plunger cylinder for a buffer comprises a cylinder body 3, wherein a first end cover 1 is installed at one axial end of the cylinder body 3, a second end cover 2 is installed at the other axial end of the cylinder body 3, and the cylinder body 3, the first end cover 1 and the second end cover 2 are of a split structure; the first end cover 1 is provided with a first positioning ring 11 at one side facing the cylinder 3, the second end cover 2 is provided with a second positioning ring 21 at one side facing the cylinder 3, and the first positioning ring 11 and the second positioning ring 21 are respectively inserted into corresponding one ends of the cylinder 3; the fixing modes between the first end cover 1 and the second end cover 2 and the cylinder body 3 are the same or different, and the fixing mode is at least one of welding, threaded connection and interference fit.
The plunger cylinder integrally comprises a cylinder body 3, a first end cover 1 and a second end cover 2 which are mutually independent and split structures, the cylinder body 3, the first end cover 1 and the second end cover 2 can be respectively processed in the production process, and then the cylinder body 3, the first end cover 1 and the second end cover 2 are assembled into the plunger cylinder for use. Because barrel 3, first end cover 1, second end cover 2 are for the plunger section of thick bamboo is whole for the size less, simple structure can reduce the manufacturing and processing time, saves blank material.
The first end cover 1 and the second end cover 2 are respectively provided with a first positioning ring 11 and a second positioning ring 21 at one side facing the cylinder 3, the positioning rings are inserted into the corresponding ends of the cylinder 3 to complete the assembly of the plunger cylinder, and in order to ensure the connection stability of the three parts, the positioning rings and the cylinder 3 can be connected in an interference fit manner; in addition, the first end cover 1 and the second end cover 2 can be fixedly connected with the cylinder 3 in a welding, threaded connection, riveting or interference fit mode, and can also be combined in various connection modes, for example, the first end cover and the second end cover are installed in place in an interference fit mode and then welded, so that the installation precision and the overall strength are further ensured, and the various fixed connection modes can be matched and used according to factors such as the size and the material of the end covers and the cylinder 3.
The plunger barrel provided by the application can be used as a buffer accessory, and in a use state, as shown in fig. 5, the barrel body 3 of the plunger barrel is vertically arranged, the first end cover 1 is arranged at the top of the barrel body 3 (equivalent to an upper plunger cover), and correspondingly, the second end cover 2 is arranged at the bottom of the barrel body 3 (equivalent to a lower plunger cover).
The end of the cylinder 3, where the first end cap 1 is installed, is a first end, and in one embodiment, as shown in fig. 3, a first annular groove 31 is formed on the inner wall of the cylinder at the first end, and the first annular groove 31 is open to the end surface of the first end, and the size of the first annular groove 31 matches with that of the first positioning ring 11 to accommodate the first positioning ring 11 inserted into the first end of the cylinder 3; or the inner diameter of the first annular groove 31 is slightly smaller than the outer diameter of the first positioning ring 11, so that the two are fixedly connected through interference fit. Similarly, the end of the cylinder 3 where the second end cap 2 is installed is a second end, a second annular groove 32 is arranged on the inner wall of the cylinder at the second end, the second annular groove 32 is opened at the end face of the second end, and the second positioning ring 21 is inserted into the second annular groove 32. The second annular groove 32 is sized to match the second locating ring 21, or the inner diameter of the second annular groove 32 is slightly smaller than the outer diameter of the second locating ring 21, so that the two are fixedly connected by interference fit.
When the plunger cylinder is used as a buffer accessory, as shown in fig. 5, the entire plunger cylinder needs to be ensured to be vertically through, and then to be used in cooperation with other parts of the buffer, so in one embodiment, as shown in fig. 1 to 2, the first end cover 1 and the second end cover 2 in the plunger cylinder are both of an annular structure as a whole, specifically, the first end cover 1 sequentially comprises a first positioning ring 11 and a first annular cover plate 12 in the axial direction of the cylinder 3, and the size ratio of the first positioning ring 11 to the first annular cover plate 12 in the axial direction of the cylinder 3 is 1.1-1.2: 1. To reduce the manufacturing steps and the subsequent assembly steps, the first retainer ring 11 and the first annular cover plate 12 may be formed as a single piece from the same blank. In the process of assembling the first end cap 1 to the first end of the cylinder 3, the first positioning ring 11 is inserted into the first annular groove 31 on the inner wall of the first end of the cylinder 3, and the first annular cover plate 12 is attached to the end face of the first end of the cylinder 3 to complete the sealing assembly of the first end of the cylinder 3.
In order to ensure that the first end cap 1 and the barrel 3 are connected stably, in one embodiment, an external thread is formed on the periphery of the first positioning ring 11, and correspondingly, an internal thread is formed on the inner wall of the first annular groove 31, so that when the first positioning ring 11 is inserted into the first annular groove 31, the first positioning ring is fastened and connected through the matching of the internal thread and the external thread. In addition, the first end cover 1 and the first end of the cylinder 3 may also be fixed by welding, and in one embodiment, as shown in fig. 4, a welding groove is provided on the outer edge of the first end of the cylinder 3, and the first end cover 1 and the first end of the cylinder 3 are welded and fixed at the welding groove to form a first weld 33. The welding groove preset on the outer edge of the first end of the cylinder 3 can simplify the preparation work before welding in the installation process, and the welding and fixing quality is ensured.
The inner wall of the first end cover 1 is provided with an annular cushion accommodating groove 13, the size ratio of the cushion accommodating groove 13 to the first end cover 1 is 0.14-0.15: 1 in the axial direction of the cylinder 3, and the position of the cushion accommodating groove 13 corresponds to the second positioning ring 11 or is positioned at the junction part of the second annular cover plate 12 and the second positioning ring 11.
The first end cap 1 further integrates a spring seat 14 for mounting a compression spring, and in one embodiment, as shown in fig. 4, the first annular cover plate 12 extends to the periphery of the cylinder 3 in the radial direction to form the spring seat 14, and specifically, the first annular cover plate 12 is provided with an annular limit step at the side facing the cylinder 3, and the spring seat 14 is located at the periphery of the limit step.
In order to facilitate the use of the buffer with other parts, the inner wall of the first annular cover plate 12 is provided with a flaring structure at the side facing away from the barrel 3. The flaring structure is arranged on the end face, back to the barrel body 3, of the first annular cover plate 12, and the size ratio of the flaring structure to the first annular cover plate 12 in the axial direction of the barrel body 3 is 0.25-0.3: 1. The inner diameters of the rest parts of the first end cover 1 except for the flaring structure and the buffer pad accommodating groove 13 are the same, and the ratio of the inner diameter of the first end cover to the inner diameter of the barrel 3 is 0.8-0.85: 1.
Like the first end cap 1, the second end cap 2 is of an annular structure as a whole; the second end cover 2 sequentially comprises a second positioning ring 21 and a second annular cover plate 22 in the axial direction of the cylinder 3, the outer diameter of the second annular cover plate 22 is the same as that of the cylinder 3, and the size ratio of the second positioning ring 21 to the second annular cover plate 22 in the axial direction of the cylinder 3 is 1.1-1.2: 1. To reduce the manufacturing and subsequent assembly steps, the second retaining ring 21 and the second annular cover plate 22 may be manufactured as a single piece from the same blank. In the process of assembling the second end cap 2 to the second end of the cylinder 3, the second positioning ring 21 is inserted into the second annular groove 32 on the inner wall of the second end of the cylinder 3, and the second annular cover plate 22 is attached to the end surface of the second end of the cylinder 3, so as to complete the sealing assembly of the second end of the cylinder 3.
The second end cap 2 and the second end of the cylinder 3 may be welded and fixed correspondingly, and in one embodiment, as shown in fig. 4, the outer edge of the second end and the outer edge of the second annular cover plate 22 are provided with welding grooves in matching positions, and a second welding seam 34 is formed between the welding grooves during welding and fixing.
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. A plunger cylinder for a buffer comprises a cylinder body, wherein a first end cover is arranged at one axial end of the cylinder body, a second end cover is arranged at the other axial end of the cylinder body,
the cylinder body, the first end cover and the second end cover are of a split structure;
the first end cover is provided with a first positioning ring at one side facing the cylinder, the second end cover is provided with a second positioning ring at one side facing the cylinder, and the first positioning ring and the second positioning ring are respectively inserted into corresponding ends of the cylinder;
the first end cover and the second end cover are the same or different in fixing mode with the barrel, and the fixing mode is at least one of welding, threaded connection and interference fit.
2. The plunger barrel for a shock absorber according to claim 1, wherein the end of the barrel body to which the first end cap is attached is a first end, and a first annular groove is provided on an inner wall of the barrel of the first end and opens at an end face of the first end; the first positioning ring is inserted in the first annular groove.
3. The plunger barrel for a shock absorber according to claim 2, wherein said first end cap is generally annular in configuration; the first end cover sequentially comprises a first annular cover plate and a first positioning ring in the axial direction of the cylinder body, and the first annular cover plate and the first positioning ring are of an integral structure;
the first annular cover plate is attached to the end face of the first end, and the first annular cover plate extends to the periphery of the cylinder in the radial direction to form a spring seat.
4. The plunger barrel for a buffer of claim 3, wherein the first end of the barrel is provided at its outer edge with a weld groove forming a first weld with the first annular cover plate.
5. The plunger barrel for a buffer of claim 3, wherein the inner wall of the first end cap defines an annular cushion receiving groove, the cushion receiving groove corresponding in position to the first positioning ring or located at the interface between the first annular cover plate and the first positioning ring.
6. The plunger barrel for a shock absorber as set forth in claim 3, wherein said first annular cover plate is provided with an annular limit step at a side toward said barrel, said spring seat being at an outer periphery of the limit step.
7. The plunger barrel for a buffer of claim 3 wherein the inner wall of said first annular cover plate is provided with a flared structure on a side facing away from said barrel.
8. The plunger barrel for a buffer of claim 7, wherein said first end cap has a minimum inner diameter that is less than an inner diameter of said barrel.
9. The plunger barrel for a shock absorber according to claim 1, wherein the end of the barrel to which the second end cap is attached is a second end, and a second annular groove is provided on the inner wall of the barrel of the second end and opens at the end face of the second end; the second positioning ring is inserted in the second annular groove.
10. The plunger barrel for a shock absorber according to claim 9, wherein said second end cap is generally annular in configuration; the second end cover sequentially comprises a second annular cover plate and a second positioning ring in the axial direction of the cylinder body, and the second annular cover plate and the second positioning ring are of an integral structure;
the second annular cover plate is attached to the end face of the second end, the outer edge of the second end and the outer edge of the second annular cover plate are provided with welding grooves matched in position, and a second welding seam is formed between the welding grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920561528.4U CN210150540U (en) | 2019-04-23 | 2019-04-23 | Plunger cylinder for buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920561528.4U CN210150540U (en) | 2019-04-23 | 2019-04-23 | Plunger cylinder for buffer |
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| Publication Number | Publication Date |
|---|---|
| CN210150540U true CN210150540U (en) | 2020-03-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920561528.4U Active CN210150540U (en) | 2019-04-23 | 2019-04-23 | Plunger cylinder for buffer |
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| CN (1) | CN210150540U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115076092A (en) * | 2022-06-21 | 2022-09-20 | 烟台杰瑞石油装备技术有限公司 | Plunger and fracturing pump |
-
2019
- 2019-04-23 CN CN201920561528.4U patent/CN210150540U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115076092A (en) * | 2022-06-21 | 2022-09-20 | 烟台杰瑞石油装备技术有限公司 | Plunger and fracturing pump |
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