CN210153075U - Powder metallurgy crankshaft bolt gasket with stepped holes connected to two ends of inner straight hole - Google Patents
Powder metallurgy crankshaft bolt gasket with stepped holes connected to two ends of inner straight hole Download PDFInfo
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- CN210153075U CN210153075U CN201921115728.3U CN201921115728U CN210153075U CN 210153075 U CN210153075 U CN 210153075U CN 201921115728 U CN201921115728 U CN 201921115728U CN 210153075 U CN210153075 U CN 210153075U
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Abstract
The utility model discloses a powder metallurgy crankshaft bolt gasket in step hole is connected at interior straight hole both ends, including disc flange, interior straight hole and circular locking boss, its characterized in that: a conical surface is arranged between the disc-shaped flange and the circular locking boss, and the end surface of the circular locking boss is a bolt locking plane; the inner straight hole is positioned in the disc-shaped flange, an arc-shaped anti-loosening step hole is formed in the end part, facing the inner side of the crankshaft, of the disc-shaped flange, one end part of the inner straight hole is connected with the inner end part of the arc-shaped anti-loosening step hole, and the side wall of the arc-shaped anti-loosening step hole is arc-shaped; the outer end part of the round locking boss is provided with an outer side surface step hole, and a horn mouth-shaped transition surface is arranged between the other end part of the inner straight hole and the outer side surface step hole. The utility model has the advantages that the locking function can be achieved due to the stepped holes arranged at the two ends of the inner straight hole; meanwhile, the novel steel plate is easy to manufacture, low in production cost, easy to shape, beneficial to batch production and also capable of avoiding corrosion.
Description
Technical Field
The utility model relates to an improvement of the mounting of engine crankshaft both ends position, specifically speaking are powder metallurgy crankshaft bolt gasket in step hole is connected at interior straight hole both ends.
Background
The crankshaft gasket is a fixing piece at two ends of the crankshaft of the engine and has the function of looseness prevention after connection. The crankshaft gasket used at present has various types, and has different shapes and sizes according to different purposes and different use purposes, such as: "a bent axle bolt gasket structure" of chinese patent that haerbin dongan automobile engine manufacturing limited company submitted in 2015.10.13, publication number is CN205047624U, its structure is the disc flange, the flange center is interior straight hole for the cover is at the axle head, be equipped with convex-concave form skid resistant course on the installation face towards the inboard of axle, the installation face middle part towards the axle outside is the boss, the boss middle part is the shaft hole that link up with the interior straight hole of flange, a belt pulley interference fit for the bent axle front end is installed at the bent axle end, avoid the engine during operation bent axle to produce vibration, prevent that belt pulley and bent axle from producing not hard up. Crankshaft bolt gasket be engine crankshaft and drive wheel and be connected locking crankshaft bolt gasket, mainly play connection, fixed, locking effect, its central shaft hole is circular straight hole, with bent axle interference pressure equipment, adopt steel part machine tooling to form, its weak point lies in: the central shaft holes are round inner straight holes, so that the connection with the crankshaft is easy to loosen due to poor elasticity; because the steel part is machined, the processing is complex, the cost is high, and the shaping and the batch production are not easy to realize; since the material is steel, it is easily corroded.
Through retrieval, the powder metallurgy crankshaft bolt gasket with the stepped holes connected with the two ends of the inner straight hole, which can enhance the anti-loosening function, is low in processing cost and easy for mass production and has the stepped holes arranged at the two ends of the inner straight hole, is not available at present.
Disclosure of Invention
An object of the utility model is to provide a can strengthen locking function that moves, the both ends in interior straight hole all are equipped with the step hole, and the processing cost is low, and easy batch finalization production's interior straight hole both ends are connected the powder metallurgy crankshaft bolt gasket in step hole.
In order to achieve the above purpose, the utility model adopts the technical scheme that: this powder metallurgy crankshaft bolt gasket in step hole is connected at interior straight hole both ends, including disc flange, interior straight hole and circular locking boss, the center of disc flange is equipped with interior straight hole, and the end fixing of disc flange towards the bent axle outside is equipped with circular locking boss, and the one side of disc flange towards the bent axle inboard is the plane, its characterized in that: a conical surface is fixedly arranged between the disc-shaped flange and the circular locking boss, the central axis of the circular locking boss is superposed with the central axis of the disc-shaped flange, and the end surface of the circular locking boss is a bolt locking plane; the inner straight hole is positioned in the disc-shaped flange, an arc-shaped anti-loosening step hole is formed in the end part, facing the inner side of the crankshaft, of the disc-shaped flange, one end part of the inner straight hole is connected with the inner end part of the arc-shaped anti-loosening step hole, and the side wall of the arc-shaped anti-loosening step hole is arc-shaped; the outer end part of the round locking boss is provided with an outer side surface step hole, and a horn mouth-shaped transition surface is arranged between the other end part of the inner straight hole and the outer side surface step hole.
The outer diameter of the disc-shaped flange is 53.0mm, the outer diameter of the circular locking boss is 26.0mm, and the height of the circular locking boss is 0.6 mm; the diameter of the inner straight hole is 14.0mm, and the length of the inner straight hole is 2 mm; the diameter of the step hole on the outer side surface is 16mm, and the depth is 1.25 mm; the length of the bell-mouth-shaped transition surface is 2.75 mm; the diameter of the outer port edge of the arc-shaped anti-loosening step hole is 21mm, and the depth of the arc-shaped anti-loosening step hole is 2 mm.
The beneficial effects of the utility model reside in that: compared with the currently used crankshaft bolt gasket, the utility model has the advantages that the stepped holes are arranged at the two ends of the inner straight hole and are respectively transited through the arc surface of the arc-shaped anti-loosening stepped hole and the horn mouth-shaped transition surface, so that in the using process, after the bolt is screwed, the axial deformation can be generated, and the anti-loosening effect is achieved; the surface facing the inner side of the shaft is a plane, and the end surface of the circular locking boss is a bolt locking plane, so that the locking force self-centering function is achieved; because the powder metallurgy is adopted to be formed into a whole through die filling, pressing and sintering, the manufacturing is easy, the production cost is low, the shaping is easy, the mass production is facilitated, and meanwhile, the corrosion is avoided.
Drawings
Fig. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a left side view of the structure of the present invention.
Fig. 3 is a schematic diagram of the structure of the present invention viewed from the right.
Fig. 4 is an enlarged schematic view of the present invention along the sectional structure a-a in fig. 2.
In the figure: 1. a disc-shaped flange; 2. an inner straight hole; 3. a circular locking boss; 4. a conical surface; 5. an arc-shaped anti-loosening stepped hole; 6. a plane; 7. a bell-mouth shaped transition surface; 8. a step hole on the outer side surface.
Detailed Description
The present invention is manufactured with reference to fig. 1, 2, 3, and 4. This powder metallurgy crankshaft bolt gasket in step hole is connected at interior straight hole both ends, including disc flange 1, interior straight hole 2 and circular locking boss 3, the center of disc flange 1 is equipped with interior straight hole 2, and the end fixing of disc flange 1 towards the bent axle outside is equipped with circular locking boss 3, and interior straight hole 2 is pressed fitting with the tip interference of bent axle, and the one side of disc flange 1 towards the bent axle inboard is plane 6 for the fastening, its characterized in that: a conical surface 4 is fixedly arranged between the disc-shaped flange 1 and the circular locking boss 3, transition is carried out through the conical surface 4, the central axis of the circular locking boss 3 is overlapped with the central axis of the disc-shaped flange 1, and the end face of the circular locking boss 3 is a bolt locking plane and has the function of self-centering of locking force; the inner straight hole 2 is positioned in the disc-shaped flange 1 and used for centering and ensuring that the driving wheel is concentric with the crankshaft, an arc-shaped anti-loosening step hole 5 is formed in the end part, facing the inner side of the crankshaft, of the disc-shaped flange 1, one end part of the inner straight hole 2 is connected with the inner end part of the arc-shaped anti-loosening step hole 5, and the side wall of the arc-shaped anti-loosening step hole 5 is arc-shaped, so that the arc-shaped anti-loosening step hole 5 forms an arc-shaped transition surface; the outer end part of the circular locking boss 3 is provided with an outer side surface step hole 8, and a horn mouth-shaped transition surface 7 is arranged between the other end part of the inner straight hole 2 and the outer side surface step hole 8, so that the other end part of the inner straight hole 2 is in transition connection with the outer side surface step hole 8 through the horn mouth-shaped transition surface 7.
The outer diameter of the disc-shaped flange 1 is 53.0mm, the outer diameter of the circular locking boss 3 is 26.0mm, and the height of the circular locking boss 3 is 0.6 mm; the diameter of the inner straight hole 2 is 14.0mm, and the length of the inner straight hole 2 is 2 mm; the diameter of the outer side surface step hole 8 is 16mm, and the depth is 1.25 mm; the length of the bell-mouth-shaped transition surface 7 is 2.75 mm; the diameter of the outer port edge of the arc-shaped anti-loosening step hole 5 is 21mm, the diameter of the outer port edge is 7mm larger than that of the inner straight hole 2, and the depth of the arc-shaped anti-loosening step hole 5 is 2 mm.
The central axes of the inner straight hole 2, the arc-shaped anti-loosening stepped hole 5, the horn mouth-shaped transition surface 7 and the outer side surface stepped hole 8 are coincided.
The disc-shaped flange 1, the circular locking boss 3 and the conical surface 4 are formed into a whole through powder metallurgy through die filling, pressing and sintering, so that an inner straight hole 2, an arc-shaped anti-loosening step hole 5, a horn-shaped transition surface 7 and an outer side surface step hole 8 are formed. The powder metallurgy comprises the following components in percentage by weight: 0.5-0.7% of carbon, 1.5-2.0% of copper, 1.5-2.0% of nickel and the balance of iron.
Claims (2)
1. Powder metallurgy crankshaft bolt gasket in step hole is connected at interior straight hole both ends, including disc flange (1), interior straight hole (2) and circular locking boss (3), the center of disc flange (1) is equipped with interior straight hole (2), and the end fixing of disc flange (1) towards the bent axle outside is equipped with circular locking boss (3), and the one side of disc flange (1) towards the bent axle inboard is plane (6), its characterized in that: a conical surface (4) is fixedly arranged between the disc-shaped flange (1) and the circular locking boss (3), the central axis of the circular locking boss (3) is superposed with the central axis of the disc-shaped flange (1), and the end face of the circular locking boss (3) is a bolt locking plane; the inner straight hole (2) is positioned in the disc-shaped flange (1), an arc-shaped anti-loosening step hole (5) is formed in the end part, facing the inner side of the crankshaft, of the disc-shaped flange (1), one end part of the inner straight hole (2) is connected with the inner end part of the arc-shaped anti-loosening step hole (5), and the side wall of the arc-shaped anti-loosening step hole (5) is arc-shaped; the outer end part of the round locking boss (3) is provided with an outer side surface step hole (8), and a horn mouth-shaped transition surface (7) is arranged between the other end part of the inner straight hole (2) and the outer side surface step hole (8).
2. The powder metallurgy crankshaft bolt gasket of step hole is connected at interior straight bore both ends according to claim 1, its characterized in that: the outer diameter of the disc-shaped flange (1) is 53.0mm, the outer diameter of the circular locking boss (3) is 26.0mm, and the height of the circular locking boss (3) is 0.6 mm; the diameter of the inner straight hole (2) is 14.0mm, and the length of the inner straight hole (2) is 2 mm; the diameter of the outer side surface step hole (8) is 16mm, and the depth is 1.25 mm; the length of the bell-mouth-shaped transition surface (7) is 2.75 mm; the diameter of the outer port of the arc-shaped anti-loosening step hole (5) is 21mm, and the depth of the arc-shaped anti-loosening step hole (5) is 2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921115728.3U CN210153075U (en) | 2019-07-17 | 2019-07-17 | Powder metallurgy crankshaft bolt gasket with stepped holes connected to two ends of inner straight hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921115728.3U CN210153075U (en) | 2019-07-17 | 2019-07-17 | Powder metallurgy crankshaft bolt gasket with stepped holes connected to two ends of inner straight hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210153075U true CN210153075U (en) | 2020-03-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921115728.3U Active CN210153075U (en) | 2019-07-17 | 2019-07-17 | Powder metallurgy crankshaft bolt gasket with stepped holes connected to two ends of inner straight hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210153075U (en) |
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2019
- 2019-07-17 CN CN201921115728.3U patent/CN210153075U/en active Active
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