CN216742355U - Cylinder sleeve pin integrated structure - Google Patents
Cylinder sleeve pin integrated structure Download PDFInfo
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- CN216742355U CN216742355U CN202123024288.0U CN202123024288U CN216742355U CN 216742355 U CN216742355 U CN 216742355U CN 202123024288 U CN202123024288 U CN 202123024288U CN 216742355 U CN216742355 U CN 216742355U
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- cylinder sleeve
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Abstract
The utility model relates to the technical field of cylinder sleeve pins, and discloses a cylinder sleeve pin integrated structure, which comprises a cylinder sleeve pin body; the cylinder sleeve pin body is provided with a pin body inner side wall; the inner side wall of the pin body comprises an upper inner side wall, a middle inner side wall and a lower inner side wall; the upper inner side wall and the lower inner side wall are cylindrical; the middle inner side wall is in a circular truncated cone shape; the diameter of the lower inner side wall is larger than that of the upper inner side wall; the lower end of the middle inner side wall is connected with the upper end of the lower inner side wall; the upper end of the middle inner side wall is gathered towards the central axis of the middle inner side wall, inclines upwards and is connected with the lower end of the upper inner side wall. The utility model provides a cylinder liner round pin integral structure can make things convenient for the cutter to the internal lateral wall processing of round pin, and the sweeps that helps processing is discharged along well inside wall, avoids piling up the cylinder liner round pin internal, improves machining efficiency, simultaneously, can improve this cylinder liner round pin integral structure's cooling circuit, helps accelerating cooling efficiency.
Description
Technical Field
The utility model relates to a cylinder liner round pin technical field especially relates to a cylinder liner round pin integral structure, mainly is to the cylinder liner location shaping of engine cylinder body.
Background
At present, a cylinder sleeve pin is mainly used for positioning and molding a cylinder sleeve of an engine cylinder body. Current cylinder jacket round pin includes the cylinder liner round pin body, and the round pin internal side wall of this cylinder liner round pin body includes lateral wall and the lower lateral wall of being connected with last lateral wall, wherein, goes up the inside wall and all is the cylindricality with lower inside wall, and the diameter of going up the inside wall is less than the diameter of inside wall down. However, when the inner side wall of the pin body of the cylinder sleeve pin is machined, scraps are not easy to discharge and are easy to accumulate in the cylinder sleeve pin body, so that the machining efficiency is influenced, and meanwhile, the inner side wall of the pin body of the cylinder sleeve pin is not beneficial to circulation of a cooling loop, so that the phenomenon of insufficient smoothness exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's problem, providing a cylinder liner round pin integral structure that helps processing sweeps to go out, improves machining efficiency and improves cooling circuit.
In order to achieve the above purpose, the utility model adopts the following scheme:
a cylinder sleeve and pin integrated structure comprises a cylinder sleeve and pin body; the cylinder sleeve pin body is provided with a pin body inner side wall; the inner side wall of the pin body comprises an upper inner side wall, a middle inner side wall and a lower inner side wall;
the upper inner side wall and the lower inner side wall are cylindrical; the middle inner side wall is in a circular truncated cone shape; the diameter of the lower inner side wall is larger than that of the upper inner side wall; the lower end of the middle inner side wall is connected with the upper end of the lower inner side wall; the upper end of the middle inner side wall is gathered towards the central axis of the middle inner side wall and is connected with the lower end of the upper inner side wall in an inclined and upward manner.
Further, the section of the middle inner side wall passing through the central axis thereof is isosceles trapezoid; an included angle formed by the two trapezoid waist edges of the isosceles trapezoid is alpha; the alpha is 45-60 degrees.
Further, α is 50 °.
Further, the cylinder sleeve pin body comprises an upper pin body and a lower pin body; the upper pin body is positioned at the upper end of the lower pin body and is integrally formed with the lower pin body;
the upper inner side wall is positioned in the upper pin body; the middle inner side wall is positioned in the upper pin body and the lower pin body; the lower inner side wall is positioned in the lower pin body;
the upper pin body and the lower pin body are both cylindrical; the outer diameter of the upper pin body is smaller than the outer diameter of the lower pin body.
Further, the cylinder sleeve pin body also comprises a pin body bottom surface connected with the lower end of the lower inner side wall; a cooling cavity is defined by the inner side wall of the pin body and the bottom surface of the pin body; the cylinder sleeve pin integrated structure also comprises a cylinder sleeve pin head, and the upper pin body is provided with a threaded hole communicated with the cooling cavity; the lower end of the cylinder sleeve pin head is matched with the threaded hole and in threaded connection; the cylinder sleeve pin head is provided with a cooling flow passage communicated with the cooling cavity.
Further, after the lower end of the cylinder sleeve pin head is matched with the threaded hole and in threaded connection, the cylinder sleeve pin head and the cylinder sleeve pin body are welded through a U-shaped groove.
Furthermore, the joint between the lower end of the lower inner side wall and the bottom surface of the pin body is provided with a first outer fillet; the joint between the lower end of the middle inner side wall and the upper end of the upper inner side wall is a second outer fillet; the upper end of the middle inner side wall and the joint between the lower ends of the upper inner side walls are arranged in an inner fillet mode.
Further, the radius of the first outer fillet, the radius of the second outer fillet and the radius of the inner fillet are the same; the radius of the first outer fillet is 6-8 mm.
Furthermore, the upper end of the lower pin body is provided with an outer convex part arranged around the outer periphery of the lower pin body; and the bottom end surface of the lower pin body is provided with a clamping and locking convex part for locking and fixing the cylinder sleeve pin body.
Further, the cylinder sleeve pin body and the cylinder sleeve pin head are both made of die steel.
Compared with the prior art, the utility model has the advantages of as follows:
1. the utility model discloses divide into the internal side wall with the round pin of cylinder liner round pin body from top to bottom, well inside wall and lower inside wall, add the well inside wall of round platform form between last inside wall and lower inside wall, make things convenient for the cutter to sell internal side wall processing, the sweeps that helps processing out is discharged along well inside wall, avoid piling up the cylinder liner round pin internal, and the machining efficiency is improved, and simultaneously, the coolant liquid has sufficient space to gather in the space that flows to the internal side wall of upper limb along well inside wall, can improve the cooling circuit of this cylinder liner round pin integral structure, help accelerating cooling efficiency.
2. The utility model discloses a cylinder liner round pin integral structure overall structure is simple, long service life.
Drawings
The present application will be described in further detail with reference to the following drawings and detailed description.
Fig. 1 is a schematic structural diagram of a cylinder liner pin integrated structure of the present invention.
The figure includes:
the cylinder sleeve pin comprises a cylinder sleeve pin body 1, an upper pin body 11, a lower pin body 12, a pin body inner side wall 2, an upper inner side wall 21, a middle inner side wall 22, a lower inner side wall 23, a pin body bottom surface 3, a cooling cavity 4, a cylinder sleeve pin head 5, a threaded hole 6, a cooling flow channel 7, a first outer fillet 8, a second outer fillet 9, an inner fillet 10, an outer convex part 20 and a clamping and locking convex part 30.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1, the cylinder liner pin integrated structure comprises a cylinder liner pin body 1; the cylinder sleeve pin body 1 is provided with a pin body inner side wall 2; the pin body inner side wall 2 comprises an upper inner side wall 21, a middle inner side wall 22 and a lower inner side wall 23; the upper inner side wall 21 and the lower inner side wall 23 are cylindrical, so that the processing is convenient; the middle inner side wall 22 is in a circular truncated cone shape, so that the machining is convenient, the waste chip discharge is accelerated, and the cooling efficiency is accelerated; the diameter of the lower inner side wall 23 is larger than that of the upper inner side wall 21; the lower end of the middle inner side wall 22 is connected with the upper end of the lower inner side wall 23; the upper end of the middle inner side wall 22 is gathered towards the central axis of the middle inner side wall 22 and is connected with the lower end of the upper inner side wall 21 in an inclined and upward manner.
This cylinder liner round pin integral structure is divided into inside wall 21 with the round pin internal side wall 2 of cylinder liner round pin body 1 from top to bottom, well inside wall 22 and lower inside wall 23, add well inside wall 22 of round platform form between last inside wall 21 and lower inside wall 23, make things convenient for the cutter to the internal side wall 2 processing of round pin, the sweeps that helps processing out is discharged along well inside wall 22, avoid piling up in the cylinder liner round pin body 1, the machining efficiency is improved, and simultaneously, inside wall 22 in the setting, the coolant liquid has sufficient space to gather in the interior inside wall along and flows in the space that the internal side wall formed, can improve the cooling circuit of this cylinder liner round pin integral structure, help accelerating cooling rate.
Wherein, the section of the middle inner side wall 22 passing through the central axis thereof is isosceles trapezoid; an included angle formed by the two trapezoid waist edges of the isosceles trapezoid is alpha; the alpha is 45-60 degrees. Preferably, said α is 50 °. Through the contained angle scope that sets for two trapezoidal waist limits of isosceles trapezoid and form, the angle sets up rationally, makes things convenient for tool machining more for the sweeps of discharging and improve the cooling circuit of this cylinder liner round pin integral structure.
In the present embodiment, the liner pin body 1 includes an upper pin body 11 and a lower pin body 12; the upper pin body 11 is positioned at the upper end of the lower pin body 12 and is integrally formed with the lower pin body 12; the upper inner side wall 21 is positioned in the upper pin body 11; the middle inner side wall 22 is positioned in the upper pin body 11 and the lower pin body 12; the lower inner sidewall 23 is located within the lower pin body 12; the upper pin body 11 and the lower pin body 12 are both cylindrical; the outer diameter of the upper pin body 11 is smaller than the outer diameter of the lower pin body 12. Through setting up round pin body 11 and round pin body 12 integrated into one piece down to and round pin body 11 and round pin body 12 all are the cylinder form down, make things convenient for processing production, improve production efficiency, prevent 1 fracture of cylinder liner round pin body.
Preferably, the cylinder sleeve pin body 1 further comprises a pin body bottom surface 3 connected with the lower end of the lower inner side wall 23; a cooling cavity 4 is defined by the inner side wall 2 of the pin body and the bottom surface 3 of the pin body; the cylinder sleeve and pin integrated structure further comprises a cylinder sleeve and pin head 5, and a threaded hole 6 communicated with the cooling cavity 4 is formed in the upper pin body 11; the lower end of the cylinder sleeve pin head 5 is matched with the threaded hole 6 and in threaded connection; the cylinder liner pin head 5 is provided with a cooling flow passage 7 communicated with the cooling cavity 4. And after the lower end of the cylinder sleeve pin head 5 is in matched threaded connection with the threaded hole 6, the cylinder sleeve pin head 5 and the cylinder sleeve pin body 1 are welded by adopting a U-shaped groove. Firstly, the cylinder sleeve pin head 5 is in threaded connection with the cylinder sleeve pin body 1, then the cylinder sleeve pin head 5 and the cylinder sleeve pin body 1 are further in through-welded by adopting a U-shaped groove welding, the welding area is large, the combination area of the cylinder sleeve pin head 5 and the cylinder sleeve pin body 1 is large, the welding stress is dispersed, the tensile strength of a welding seam is high, the cylinder sleeve pin integrated structure is prevented from being scrapped due to the cracking phenomenon, the service life of the cylinder sleeve pin integrated structure is prolonged, and the cost is saved.
The cylinder sleeve pin body 1 and the cylinder sleeve pin head 5 are both made of die steel, so that the cylinder sleeve pin integrated structure has high hardness, strength, wear resistance and enough toughness.
In the present embodiment, the joint between the lower end of the lower inner side wall 23 and the pin body bottom surface 3 is a first outer rounded corner 8; the joint between the lower end of the middle inner side wall 22 and the upper end of the upper inner side wall 21 is a second outer fillet 9; the connection between the upper end of the middle inner side wall 22 and the lower end of the upper inner side wall 21 is provided with an inner fillet 10. Through setting up first outer fillet 8, the outer fillet 9 of second and interior fillet 10, be favorable to the cutter to the processing of the internal lateral wall of pin 2 and pin bottom surface 3, form cooling chamber 4 to and avoid making the burr that the internal lateral wall of pin 2 and pin bottom surface 3 produced in the course of working.
Specifically, the radius of the first outer rounded corner 8, the radius of the second outer rounded corner 9 and the radius of the inner rounded corner 10 are the same; the radius of the first external fillet 8 is 6-8 mm. Preferably, the radius of the first outer fillet 8 is 8mm, and similarly, the radius of the second outer fillet 9 and the radius of the inner fillet 10 are also 8mm, which is beneficial to forming the cooling cavity 4. Of course, the radius of the first outer fillet 8, the radius of the second outer fillet 9 and the radius of the inner fillet 10 can be reasonably set according to requirements.
In order to facilitate the matching, clamping, locking and fixing of the cylinder sleeve and pin integrated structure and facilitate the positioning and forming of a cylinder sleeve of an engine cylinder body, an outer convex part 20 is arranged at the upper end of the lower pin body 12 and surrounds the outer periphery of the lower pin body 12; the bottom end surface of the lower pin body 12 is provided with a clamping and locking convex part 30 for locking and fixing the cylinder sleeve pin body 1. The arrangement of the outer convex part 20 and the clamping and locking convex part 30 is beneficial to matching, clamping, locking and fixing of the cylinder sleeve pin integrated structure, and is beneficial to positioning and forming of a cylinder sleeve of an engine cylinder body.
To sum up, the embodiment of the utility model provides a cylinder liner round pin integral structure, wherein, this cylinder liner round pin integral structure divide into inside wall 21 with the round pin body inside wall 2 of cylinder liner round pin body 1 from top to bottom, well inside wall 22 and lower inside wall 23, add the well inside wall 22 of round platform form between last inside wall 21 and lower inside wall 23, make things convenient for cutter to the processing of the internal side wall 2 of round pin, the sweeps that helps processing out is discharged along well inside wall 22, avoid piling up in the cylinder liner round pin body 1, and the machining efficiency is improved, and simultaneously, inside wall 22 in the setting, coolant liquid has sufficient space along well inside wall to gather in the space that the upper inner side wall formed, can improve the cooling circuit of this cylinder liner round pin integral structure, help accelerating cooling rate.
The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present application, and these modifications and substitutions should also be regarded as the protection scope of the present application.
Claims (10)
1. A cylinder sleeve and pin integrated structure comprises a cylinder sleeve and pin body; the cylinder sleeve is characterized in that the cylinder sleeve pin body is provided with a pin body inner side wall; the inner side wall of the pin body comprises an upper inner side wall, a middle inner side wall and a lower inner side wall;
the upper inner side wall and the lower inner side wall are cylindrical; the middle inner side wall is in a circular truncated cone shape; the diameter of the lower inner side wall is larger than that of the upper inner side wall; the lower end of the middle inner side wall is connected with the upper end of the lower inner side wall; the upper end of the middle inner side wall is gathered towards the central axis of the middle inner side wall, inclines upwards and is connected with the lower end of the upper inner side wall.
2. The cylinder liner pin integrated structure according to claim 1, wherein a section of the middle inner side wall passing through a central axis thereof is an isosceles trapezoid; an included angle formed by two trapezoid waist edges of the isosceles trapezoid is alpha; the alpha is 45-60 degrees.
3. The bore pin integration of claim 2, wherein said α is 50 °.
4. The bore pin integrated structure of claim 1, wherein the bore pin body comprises an upper pin body and a lower pin body; the upper pin body is positioned at the upper end of the lower pin body and is integrally formed with the lower pin body;
the upper inner side wall is positioned in the upper pin body; the middle inner side wall is positioned in the upper pin body and the lower pin body; the lower inner side wall is positioned in the lower pin body;
the upper pin body and the lower pin body are both cylindrical; the outer diameter of the upper pin body is smaller than the outer diameter of the lower pin body.
5. The liner pin integrated structure of claim 4, wherein the liner pin body further comprises a pin body bottom surface connected to a lower end of the lower inner side wall; a cooling cavity is defined by the inner side wall of the pin body and the bottom surface of the pin body; the cylinder sleeve pin integrated structure also comprises a cylinder sleeve pin head, and the upper pin body is provided with a threaded hole communicated with the cooling cavity; the lower end of the cylinder sleeve pin head is matched with the threaded hole and in threaded connection; the cylinder sleeve pin head is provided with a cooling flow passage communicated with the cooling cavity.
6. The cylinder liner pin integrated structure according to claim 5, wherein after the lower end of the cylinder liner pin head is in threaded connection with the threaded hole in a matched manner, the cylinder liner pin head and the cylinder liner pin body are welded by adopting a U-shaped groove.
7. The cylinder liner pin integrated structure according to claim 5, wherein a joint between the lower end of the lower inner side wall and the bottom surface of the pin body is a first outer rounded corner; the joint between the lower end of the middle inner side wall and the upper end of the upper inner side wall is a second outer fillet; the junction between the upper end of the middle inner side wall and the lower end of the upper inner side wall is in an inner fillet shape.
8. The cylinder liner pin integrated structure according to claim 7, wherein the radius of the first outer rounded corner, the radius of the second outer rounded corner and the radius of the inner rounded corner are the same; the radius of the first external fillet is 6-8 mm.
9. The cylinder liner pin integrated structure according to claim 4, wherein an outer convex portion is arranged around the outer peripheral side of the lower pin body at the upper end of the lower pin body; and the bottom end surface of the lower pin body is provided with a clamping and locking convex part for locking and fixing the cylinder sleeve pin body.
10. The bore liner pin integrated structure of claim 1, wherein the bore liner pin body and the bore liner pin head are both made of die steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123024288.0U CN216742355U (en) | 2021-12-02 | 2021-12-02 | Cylinder sleeve pin integrated structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123024288.0U CN216742355U (en) | 2021-12-02 | 2021-12-02 | Cylinder sleeve pin integrated structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216742355U true CN216742355U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123024288.0U Active CN216742355U (en) | 2021-12-02 | 2021-12-02 | Cylinder sleeve pin integrated structure |
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| Country | Link |
|---|---|
| CN (1) | CN216742355U (en) |
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2021
- 2021-12-02 CN CN202123024288.0U patent/CN216742355U/en active Active
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