Stainless steel hollow cylinder end cover

Abstract

The utility model relates to the technical field of air cylinder accessories, and discloses a stainless steel hollowed-out air cylinder end cover which comprises a fixing part and a connecting part, a weight reducing groove is formed in the end, away from the connecting part, of the fixing part, a connecting protruding column is arranged in the middle of the weight reducing groove, and a fixing groove is formed in the middle of the connecting protruding column. And a plurality of connecting rib plates are arranged on the outer side of the connecting convex column at equal intervals, the ends, away from the connecting convex column, of the connecting rib plates are connected with the inner wall of the weight reduction groove, exhaust protrusions are arranged at the top end of the connecting convex column and located between every two adjacent connecting rib plates, and connecting holes are formed in the corners of the fixing part. The mold matched with the fixing part and the connecting part is designed, the upper mold and the lower mold are combined to pour metal liquid for integral forming, and a matching structure of the weight reducing groove, the connecting rib plate and the connecting convex column is formed in the fixing part through the flow channel arranged in the mold. Consumable materials for manufacturing the air cylinder end cover can be effectively reduced on the premise that the structural strength of the end cover is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder accessories, in particular to a stainless steel hollow cylinder end cover. Background Art

[0002] The cylinder end cover seals the cylinder, forms a combustion chamber with the piston, and withstands the effects of high-temperature, high-pressure combustion gases. Existing cylinder end covers are mostly monolithic, with their outer shape projecting to the same size as the cylinder to ensure sufficient strength. However, this structure requires machining grooves after casting, which increases production costs, increases the number of steps, and results in material waste. Utility Model Content

[0003] The purpose of the utility model is to provide a stainless steel hollow cylinder end cover to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stainless steel hollow cylinder end cover, comprising an integrally formed fixing part and a connecting part, a weight-reducing groove is provided at one end of the fixing part away from the connecting part, a connecting boss is provided in the middle of the weight-reducing groove, a fixing groove is provided in the middle of the connecting boss, and a plurality of connecting ribs are arranged at equal intervals on the outside of the connecting boss, and the ends of the plurality of connecting ribs away from the connecting boss are connected to the inner wall of the weight-reducing groove, an air hole step and a needle valve hole step are respectively provided at the bottom of the weight-reducing groove on both sides of one connecting rib, an exhaust boss is provided at the top of the connecting boss, and the exhaust boss is located between two adjacent connecting ribs, and a connecting hole is provided at the corner of the fixing part.

[0005] The following improvement is made in the solution of the present application: a stepped protrusion is provided on the outer side of the weight-reducing groove, and a through groove corresponding to the connecting rib is opened on the stepped protrusion.

[0006] The following improvement is made in the present application scheme: a fan-shaped structure area is formed between two adjacent connecting ribs, the connecting boss and the inner wall of the weight-reducing groove, and the narrower end of the fan-shaped structure is arranged radially toward the axial direction of the fixed part, and the wider end is arranged radially toward the axial direction away from the fixed part.

[0007] In the solution of the present application, the following improvements are made: the side edges of the air hole step are fitted and connected to the connecting boss, and the side edges of the needle valve hole step are fitted and connected to the connecting boss and the inner wall of the weight-reducing groove respectively.

[0008] The present invention makes the following improvements: the fixing portion is arranged in a cubic structure, with chamfers at each of its four corners, and a notch between the two pairs of connection holes. The chamfers prevent stress concentration at the corners of the fixing portion, and the notch further reduces material usage while ensuring structural strength.

[0009] The following improvements are made in the solution of the present application: the connecting portion is a columnar structure with steps, and the step connection of the connecting portion is an inclined surface, and a second groove is opened in the middle of the connecting portion.

[0010] Compared with the prior art, the present invention provides a stainless steel hollow cylinder end cover, which has the following beneficial effects:

[0011] The utility model adopts a cylinder end cover composed of a fixing part and a connecting part. By designing a mold that matches the fixing part and the connecting part, metal liquid is poured into the upper and lower molds for one-piece molding, and the traditional cylinder end cover that is machined after casting as a whole is improved to a form that can be cast in one time. Through the flow channel provided in the mold, a matching structure of weight-reducing grooves, connecting ribs and connecting bosses is formed in the fixing part. Under the premise of ensuring the structural strength of the end cover itself, the consumables for the production of the cylinder end cover can be effectively reduced, the production cost can be reduced to the greatest extent, and at the same time, the process is saved and the processing efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 Schematic diagram of the connection between the fixed part and the connecting part.

[0014] In the figure: 1. fixing part; 11. weight-reducing groove; 12. connecting hole; 13. stepped protrusion; 131. through groove; 14. chamfer; 15. notch; 2. connecting part; 21. second groove; 3. connecting boss; 31. fixing groove; 32. connecting rib; 33. exhaust protrusion; 4. air hole step; 5. needle valve hole step. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention:

[0016] like Figure 1-2 As shown, a stainless steel hollow cylinder end cover is mainly composed of a fixing part 1 and a connecting part 2. By designing a mold that matches the fixing part 1 and the connecting part 2, the upper and lower molds are combined to pour metal liquid for one-piece molding, thereby improving the traditional cylinder end cover that is machined after casting as a whole piece to a form that can be cast in one step, thereby minimizing production costs, saving processes, and improving processing efficiency.

[0017] The fixing portion 1 is arranged in a cubic structure, and its four corners are provided with connecting holes 12, and the four corners of the fixing portion 1 are provided with chamfers 14, and a notch 15 is provided between the two pairs of connecting holes 12; the fixing portion 1 is provided with a weight-reducing groove 11 at one end away from the connecting portion 2, and the cross section of the weight-reducing groove 11 is circular, and a connecting boss 3 is provided in the middle thereof, and a fixing groove 31 is provided in the middle of the connecting boss 3, and four connecting ribs 32 are provided at equal intervals on the outside of the connecting boss 3, and the four connecting ribs 32 are connected to the inside of the weight-reducing groove 11 at one end away from the connecting boss 3. The walls are connected so that a fan-shaped structure area can be enclosed between the two adjacent connecting ribs 32 and the inner wall of the connecting boss 3 and the weight-reducing groove 11. The narrower end of the fan-shaped structure is arranged radially toward the axial direction of the fixing part 1, and the wider end is arranged radially away from the axial direction of the fixing part 1; four exhaust protrusions 33 are provided on the top of the connecting boss 3, and the exhaust protrusion 33 is located between the two adjacent connecting ribs 32. At the same time, a stepped protrusion 13 is provided on the outer side of the weight-reducing groove 11, and a through groove 131 corresponding to the connecting rib 32 is opened on the stepped protrusion 13.

[0018] Since it is necessary to reserve corresponding positions for the air hole and the needle valve hole on the cylinder end cover, if the groove is pushed to the bottom, the sealing will be affected. Therefore, an air hole step 4 and a needle valve hole step 5 are respectively provided at the bottom of the weight reduction groove 11 on both sides of one of the connecting ribs 32. The cross section of the air hole step 4 is a triangular structure, and one side thereof is fitted and connected to the connecting boss 3. The cross section of the needle valve hole step 5 is a fan-shaped structure, and its arc-shaped side is fitted and connected to the connecting boss 3 and the inner wall of the weight reduction groove 11 respectively.

[0019] The connecting portion 2 is a columnar structure with steps, and the step connection of the connecting portion 2 is an inclined surface. A second groove 21 is formed in the middle of the connecting portion 2 .

[0020] The above embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A stainless steel hollow cylinder end cover, comprising an integrally formed fixing portion (1) and a connecting portion (2), characterized in that: The fixing portion (1) is provided with a weight-reducing groove (11) at one end away from the connecting portion (2), a connecting boss (3) is provided in the middle of the weight-reducing groove (11), a fixing groove (31) is provided in the middle of the connecting boss (3), and a plurality of connecting ribs (32) are provided at equal intervals on the outside of the connecting boss (3), and the ends of the plurality of connecting ribs (32) away from the connecting boss (3) are connected to the inner wall of the weight-reducing groove (11), and an air hole step (4) and a needle valve hole step (5) are provided on the bottom of the weight-reducing groove (11) on both sides of one connecting rib (32), respectively, and an exhaust protrusion (33) is provided at the top of the connecting boss (3), and the exhaust protrusion (33) is located between two adjacent connecting ribs (32). A connecting hole (12) is provided at the corner of the fixing portion (1).

2. The stainless steel hollow cylinder end cover according to claim 1, characterized in that: A stepped protrusion (13) is provided on the outer side of the weight-reducing groove (11), and a through groove (131) corresponding to the connecting rib (31) is provided on the stepped protrusion (13).

3. The stainless steel hollow cylinder end cover according to claim 1, characterized in that: A fan-shaped structure area is formed between two adjacent connecting ribs (32), the connecting boss (3) and the inner wall of the weight-reducing groove (11), wherein the narrower end of the fan-shaped structure is arranged radially toward the axial direction of the fixing portion (1), and the wider end is arranged radially away from the axial direction of the fixing portion (1).

4. The stainless steel hollow cylinder end cover according to claim 3, characterized in that: The side of the air hole step (4) is fitted and connected to the connecting boss (3), and the side of the needle valve hole step (5) is fitted and connected to the connecting boss (3) and the inner wall of the weight-reducing groove (11) respectively.

5. The stainless steel hollow cylinder end cover according to claim 1, characterized in that: The fixing portion (1) is arranged in a cubic structure, and chamfers (14) are provided at the four corners of the fixing portion (1), and a gap (15) is provided between the two pairs of connection holes (12).

6. The stainless steel hollow cylinder end cover according to claim 1, characterized in that: The connecting portion (2) is a columnar structure with steps, and the step connection of the connecting portion (2) is an inclined surface. A second groove (21) is provided in the middle of the connecting portion (2).

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