CN218695660U - Gas spring compression-resistant precision cold-drawn steel pipe cylinder cover welding structure - Google Patents
Gas spring compression-resistant precision cold-drawn steel pipe cylinder cover welding structure Download PDFInfo
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- CN218695660U CN218695660U CN202222508353.5U CN202222508353U CN218695660U CN 218695660 U CN218695660 U CN 218695660U CN 202222508353 U CN202222508353 U CN 202222508353U CN 218695660 U CN218695660 U CN 218695660U
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Abstract
The utility model belongs to the technical field of the air spring technique and specifically relates to an accurate cold drawn steel tube cylinder cap welded structure of air spring resistance to compression, including pressure cylinder, cylinder cap and adapter sleeve, the cylinder cap is the arc of evagination, and its thickness is greater than the triple of pressure cylinder wall thickness, the cylinder cap extends with pressure cylinder butt joint department and is equipped with connecting portion, be equipped with the screw thread on the excircle of pressure cylinder and connecting portion welding department, the adapter sleeve is equipped with the two-stage mesopore, and wherein great mesopore is the screw hole, and the suit is on pressure cylinder and connecting portion simultaneously, this structure is convenient to process on the terminal surface of cylinder cap to the tail end butt of cylinder cap, and low in manufacturing cost effectively disperses the work atress at pressure cylinder and cylinder cap connection position, has strengthened the joint strength at connection position, has improved the compressive strength, the bending resistance of air spring, effectively guarantees its safety in utilization and life.
Description
Technical Field
The utility model belongs to the technical field of the air spring technique and specifically relates to an accurate cold drawn steel tube cylinder cap welded structure of air spring resistance to compression.
Background
The gas spring mainly has the functions of supporting, buffering, braking, height adjusting and angle adjusting, and consists of a piston rod, a piston, a sealing guide sleeve, a filler, a pressure cylinder, a cylinder cover and the like, wherein the pressure cylinder is filled with inert gas or oil-gas mixture and can raise the pressure of the sealed pressure cylinder, the piston rod is positioned in the pressure cylinder, the piston rod moves through pressure difference formed between the inside and the outside of the piston, and the speed is low and the control is easy. The pressure cylinder in the gas spring is a seamless steel pipe and is made of high-precision steel pipe materials, the finished product precision is high, the surface quality is good, in the using process, a piston rod frequently moves in a reciprocating mode in a circulating mode, the pressure cylinder is also subjected to various stress actions with uncertain directions, the tensile strength and the fatigue resistance of the pressure cylinder are tested, and particularly the connecting position of the pressure cylinder and a cylinder cover is tested. Usually, the pressure cylinder and the cylinder cover are connected into a whole through welding, but because the pressure cylinder is thin in wall thickness, the strength of a welding seam is limited, the risk of fracture of the welding seam can occur in use, and the service life and the use safety of the gas spring are influenced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides an accurate cold drawn steel tube cylinder cap welded structure of air spring resistance to compression.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a precision cold drawn steel tube cylinder cap welded structure of air spring resistance to compression, includes pressure cylinder, cylinder cap and adapter sleeve, the cylinder cap is the arc of evagination, and its thickness is greater than the triple of pressure cylinder wall thickness, the cylinder cap extends with pressure cylinder butt joint department and is equipped with connecting portion, be equipped with the screw thread on the excircle of pressure cylinder and connecting portion welding department, it is equipped with the two-stage mesopore to connect the cover, and wherein great mesopore is the screw hole, and the suit is on pressure cylinder and connecting portion simultaneously, the tail end butt of cylinder cap is on the terminal surface of cylinder cap.
According to the utility model discloses a further embodiment, further include, the front end extension of adapter sleeve is equipped with the elastic support portion, the mesopore of elastic support portion and the excircle phase-match of pressure cylinder, and its external diameter is less than the external diameter of adapter sleeve.
According to another embodiment of the present invention, further comprising, an outer hexagon is provided on the tail end.
According to the utility model discloses a further embodiment, further include, be equipped with the annular knurl on the excircle of adapter sleeve.
According to the utility model discloses a further embodiment, further include, the outside of cylinder cap is equipped with the connector, the cylinder cap middle part is equipped with the spliced pole, the spliced pole is equipped with screw thread main aspects and axle journal, the connector is equipped with the mounting hole, the bottom of mounting hole is equipped with the screw thread, mounting hole and spliced pole threaded connection, the tip and the cylinder cap welded connection of connector.
The beneficial effects of the utility model are that, this structure is convenient to be processed, low in manufacturing cost, and the joint strength at connection position has been strengthened to the work atress at position is connected to effective dispersion pressure cylinder and cylinder cap, has improved the resistance to compression, the bending resistance of air spring, effectively guarantees its safe in utilization and life.
Drawings
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is an enlarged view at X in FIG. 1;
in the figure, a pressure cylinder 1, a cylinder cover 2, a connecting part 21, a thread big end 22, a shaft neck 23, a connecting sleeve 3, an elastic supporting part 31, a tail end 32, an outer hexagon 33, a connecting head 4, a first welding seam 5, an elastic supporting section a and a thread connecting section b.
Detailed Description
Fig. 1-2 are the utility model discloses a structural schematic diagram, a precision cold drawn steel tube cylinder cap welded structure of air spring resistance to compression, including pressure cylinder 1, cylinder cap 2 and adapter sleeve 3, cylinder cap 2 is the arc of evagination, and its thickness is greater than the triple of 1 wall thickness of pressure cylinder, cylinder cap 2 extends with 1 butt joint department of pressure cylinder and is equipped with connecting portion 21, be equipped with the screw thread on the excircle of 1 and the 21 welding of connecting portion of pressure cylinder, adapter sleeve 3 is equipped with the two-stage mesopore, and wherein great mesopore is the screw hole, and the suit is on 1 and connecting portion 21 of pressure cylinder simultaneously, the tail end 32 butt of cylinder cap 2 is on the terminal surface of cylinder cap 2.
The connecting portion 21 is arranged to facilitate butt positioning of the pressure cylinder 1 and the cylinder cover 2 during welding of the first welding seam 5, and welding quality and welding precision of the first welding seam 5 are guaranteed.
The connecting threads of the connecting sleeve 3, the pressure cylinder 1 and the connecting part 21 are fine threads and are formed by finish turning after the first welding seam 5 is welded. The connection of the pressure cylinder 1 and the cylinder cover 2 is strengthened through threaded connection to form a threaded connection section b, stress concentration at the first welding seam 5 is avoided, damage to the first welding seam is avoided, and meanwhile, the change of the outer diameter of the gas spring is small. The connecting sleeve 3 can be formed by finely turning stamping parts, and the manufacturing cost is low.
Preferably, the front end of the connecting sleeve 3 extends to form an elastic supporting portion 31, a middle hole of the elastic supporting portion 31 is matched with the outer circle of the pressure cylinder 1, and the outer diameter of the middle hole is smaller than that of the connecting sleeve 3.
Through setting up elastic support portion 31, when pressure cylinder 1 produced the micro-deformation, supported by elastic support portion 31, elastic support section a disperses gas spring atress, further improves pressure cylinder 1 and cylinder cap 2 junction bending resistance.
Preferably, the tail end 32 is provided with an outer hexagon 33. The connecting sleeve 3 is convenient to install.
Preferably, a knurl is arranged on the outer circle of the connecting sleeve 3. The connecting sleeve 3 is convenient to install.
Preferably, the outside of cylinder cap 2 is equipped with connector 4, 2 middle parts of cylinder cap are equipped with the spliced pole, the spliced pole is equipped with screw thread main aspects 22 and axle journal 23, connector 4 is equipped with the mounting hole, the bottom of mounting hole is equipped with the screw thread, mounting hole and spliced pole threaded connection, the tip and the 2 welded connection of cylinder cap of connector 4. And the threaded connection and welding are combined, so that the welding operation is convenient, and the connection strength of the connector 4 and the cylinder cover 2 is improved.
The foregoing description is intended to be illustrative, rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations, or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. The utility model provides a precision cold drawn steel tube cylinder cap welded structure of air spring resistance to compression, characterized by, includes pressure cylinder (1), cylinder cap (2) and adapter sleeve (3), cylinder cap (2) are the arc of evagination, and its thickness is greater than the triple of pressure cylinder (1) wall thickness, cylinder cap (2) and pressure cylinder (1) butt joint department extend and are equipped with connecting portion (21), be equipped with the screw thread on the excircle of pressure cylinder (1) and connecting portion (21) welding department, adapter sleeve (3) are equipped with the two-stage mesopore, and wherein great mesopore is the screw hole, and the suit is on pressure cylinder (1) and connecting portion (21) simultaneously, tail end (32) butt of cylinder cap (2) is on the terminal surface of cylinder cap (2).
2. A gas spring pressure-resistant precision cold-drawn steel pipe cylinder cover welding structure according to claim 1, characterized in that an elastic support portion (31) extends from the front end of the connecting sleeve (3), the middle hole of the elastic support portion (31) is matched with the outer circle of the pressure cylinder (1), and the outer diameter of the elastic support portion is smaller than the outer diameter of the connecting sleeve (3).
3. A gas spring pressure-resistant precision cold drawn steel tube cylinder cover welding structure according to claim 1, characterized in that an outer hexagonal (33) is arranged on the tail end (32).
4. A gas spring pressure-resistant precision cold-drawn steel pipe cylinder cover welding structure according to claim 1, characterized in that knurling is provided on the outer circle of the connecting sleeve (3).
5. A gas spring pressure-resistant precision cold-drawn steel tube cylinder cover welding structure according to claim 1, characterized in that a connector (4) is arranged on the outer side of the cylinder cover (2), a connecting column is arranged in the middle of the cylinder cover (2), the connecting column is provided with a threaded big end (22) and a shaft neck (23), the connector (4) is provided with a mounting hole, the bottom of the mounting hole is provided with threads, the mounting hole is in threaded connection with the connecting column, and the end of the connector (4) is in welded connection with the cylinder cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222508353.5U CN218695660U (en) | 2022-09-22 | 2022-09-22 | Gas spring compression-resistant precision cold-drawn steel pipe cylinder cover welding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222508353.5U CN218695660U (en) | 2022-09-22 | 2022-09-22 | Gas spring compression-resistant precision cold-drawn steel pipe cylinder cover welding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218695660U true CN218695660U (en) | 2023-03-24 |
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ID=85636050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222508353.5U Active CN218695660U (en) | 2022-09-22 | 2022-09-22 | Gas spring compression-resistant precision cold-drawn steel pipe cylinder cover welding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218695660U (en) |
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2022
- 2022-09-22 CN CN202222508353.5U patent/CN218695660U/en active Active
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