High-precision wear-resistant casting part

Abstract

The utility model discloses a high-precision wear-resistant casting part, which belongs to the technical field of marine castings, and is characterized in that an elbow joint casting body comprises a first connector and a second connector, one end of the first connector is provided with an oil inlet, one end of the second connector is provided with an oil outlet, and one end of the oil inlet is communicated with a mounting groove; the inner wall of the mounting groove is in contact connection with a buffer piece, the outer side of the buffer piece is sleeved with a buffer spring, a buffer groove is formed in one end of the buffer piece, a buffer hole is formed in the bottom of the buffer groove, one end of the buffer hole is communicated with the oil outlet, and a conical part is arranged at the joint of the first connector and the second connector. By means of the buffer spring and the buffer piece, high-pressure media can be prevented from directly scouring the inner wall of the casting, so that the wear resistance of the casting is greatly improved, the structural complexity of the casting can be reduced by means of the conical part and the protruding part assembled in the later period, and the casting precision of the casting is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of marine castings, and more specifically to a high-precision wear-resistant casting. Background Art

[0002] There are many kinds of marine castings, including elbow joint castings for high-pressure oil circuits of diesel engine fuel systems. During the casting process, the elbow joint castings have a complex surface structure, which increases the casting difficulty and reduces the casting accuracy of the castings. In addition, during the use of the elbow joint castings, the inside is directly contacted and washed by high-pressure oil, which greatly reduces its wear resistance.

[0003] For example, announcement number CN220205028U discloses a high-pressure oil circuit elbow joint casting, which includes a first connector and a second connector, which are vertically arranged and integrally formed, and the first connector and the second connector are internally connected to each other and have an oil circuit channel.

[0004] It can be seen from the above-mentioned public scheme that the first connecting head and the second connecting head are cast as one piece, but the angle between the first connecting head and the second connecting head is small, and a protrusion is provided on the surface of the second connecting head, which increases the difficulty of casting and reduces the casting accuracy of the casting. In addition, the high-pressure oil is buffered by the buffer plate. Since the buffer plate itself has no buffering function, the buffering effect may be reduced, which in turn causes the high-pressure oil to flush the inner wall of the casting and the surface of the guide ribs, causing wear and puncture, and reducing the wear resistance of the casting. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a high-precision wear-resistant casting. The high-precision wear-resistant casting can avoid high-pressure medium from directly eroding the inner wall of the casting by setting a buffer spring and a buffer part, thereby greatly improving the wear resistance of the casting. In addition, the structural complexity of the casting can be reduced by setting a conical portion and a raised portion assembled later, thereby improving the casting accuracy of the casting.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A high-precision wear-resistant casting, comprising a elbow joint casting body, the elbow joint casting body comprising a first connector and a second connector, one end of the first connector is provided with an oil inlet, one end of the second connector is provided with an oil outlet, one end of the oil inlet is connected with a mounting groove, the inner wall of the mounting groove is in contact with a buffer, the outer side of the buffer is sleeved with a buffer spring, one end of the buffer is provided with a buffer groove, the bottom of the buffer groove is provided with a buffer hole, one end of the buffer hole is connected with the oil outlet, a conical portion is provided at the connection between the first connector and the second connector, one end of the second connector is provided with a connecting portion, the surface of the connecting portion is fixedly sleeved with a fixing sleeve, the side of the fixing sleeve is provided with a convex portion, and one end of the convex portion is provided with a reinforcing portion, the high-precision wear-resistant casting, by the provided buffer spring and the buffer, can avoid high-pressure medium from directly scouring the inner wall of the casting, thereby greatly improving the wear resistance of the casting, and by the provided conical portion and the convex portion assembled later, the structural complexity of the casting can be reduced, thereby improving the casting accuracy of the casting.

[0008] Furthermore, the buffer is made of oil-resistant and puncture-proof buffer material, and a reinforcing plate is fixedly compounded inside the buffer. One end of the reinforcing plate is fixedly connected to a compression pad, and the surface of the compression pad is in contact with one end of the buffer spring. The compression pad can prevent the buffer from being worn by the buffer spring.

[0009] Furthermore, the inner wall of the oil inlet is connected with a positioning sleeve through a thread, one end of the positioning sleeve is in contact and extrusion with the end surface of the buffer, and the surface of the positioning sleeve is provided with an external thread, and the positioning sleeve is used to limit the installation position of the buffer.

[0010] Furthermore, one end of the positioning sleeve is fixedly connected to a limiting portion, the limiting portion is in a circular ring shape, and the surface of the limiting portion is in contact with the inner wall of the oil inlet, which facilitates the positioning of the positioning sleeve.

[0011] Furthermore, a connecting hole is provided at the center position of the positioning sleeve, one end of the connecting hole is connected to the buffer groove, and the connecting hole is in a polygonal shape.

[0012] Furthermore, the reinforcing plate is cylindrical in shape, and the surface of the reinforcing plate is provided with holes distributed at equal intervals, which can increase the composite firmness with the buffer component.

[0013] Furthermore, the shape of the compression pad is annular, which can increase the surface wear resistance of the buffer.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) The buffer spring and buffer member provided in this solution can prevent the high-pressure medium from directly scouring the inner wall of the casting, thereby greatly improving the wear resistance of the casting.

[0016] (2) This solution can reduce the structural complexity of the casting by setting the tapered portion and the raised portion assembled later, thereby improving the casting accuracy of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 for Figure 1 A magnified view of part A;

[0019] Figure 3 This is a bottom view of the positioning sleeve structure of the utility model;

[0020] Figure 4 This is a side view of the second connector structure of the utility model;

[0021] Figure 5 for Figure 1 Enlarged view of part B.

[0022] Description of the numbers in the figure:

[0023] 1 elbow joint casting body, 2 first connector, 21 oil inlet, 22 mounting groove, 23 tapered portion, 3 second connector, 31 oil outlet, 32 connecting portion, 4 buffer, 41 buffer groove, 42 buffer hole, 43 extrusion pad, 44 reinforcement plate, 45 buffer spring, 5 positioning sleeve, 51 limiting portion, 52 connecting hole, 6 raised portion, 61 fixing sleeve, 62 reinforcement portion. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] See also Figure 1-5A high-precision wear-resistant casting, including a elbow joint casting body 1, the elbow joint casting body 1 includes a first connector 2 and a second connector 3, the first connector 2 and the second connector 3 are both provided with an anti-corrosion coating and a buffer coating, which belongs to the prior art, the first connector 2 and the second connector 3 are formed by casting, and their production method and working principle are well known to those skilled in the art, and will not be described in detail here, one end of the first connector 2 is provided with an oil inlet 21, one end of the second connector 3 is provided with an oil outlet 31, one end of the oil inlet 21 is connected to a mounting groove 22, the inner wall of the mounting groove 22 is in contact with a buffer 4, the outer side of the buffer 4 is sleeved with a buffer spring 45, and the buffer spring 45 can buffer the buffer 4 through compression elastic force, A buffer groove 41 is provided at one end of the buffer part 4. The buffer groove 41 and the buffer hole 42 belong to the existing technology and can buffer the high-pressure medium. A buffer hole 42 is provided at the bottom of the buffer groove 41. One end of the buffer hole 42 is connected to the oil outlet 31. A tapered portion 23 is provided at the connection between the first connector 2 and the second connector 3. The tapered portion 23 can remove the angle between the first connector 2 and the second connector 3, thereby simplifying the structure. A connecting portion 32 is provided at one end of the second connector 3. A fixing sleeve 61 is fixedly sleeved on the surface of the connecting portion 32. A protrusion 6 is provided on the side of the fixing sleeve 61. The protrusion 6 simplifies the structure of the casting. A reinforcing portion 62 is provided at one end of the protrusion 6. The surface of the reinforcing portion 62 is fixed to the surface of the second joint 3, thereby increasing the connection firmness of the protrusion 6.

[0027] The buffer 4 is made of oil-resistant and puncture-proof buffer material. A reinforcing plate 44 is fixedly compounded inside the buffer 4. One end of the reinforcing plate 44 is fixedly connected to an extrusion pad 43. The surface of the extrusion pad 43 is in contact with one end of a buffer spring 45. The extrusion pad 43 can prevent the buffer 4 from being worn by the buffer spring 45. The extrusion pad 43 is in the shape of a circular ring, which can increase the surface wear resistance of the buffer 4. The reinforcing plate 44 is in the shape of a cylinder. The surface of the reinforcing plate 44 is provided with holes distributed at equal intervals, which can increase the composite firmness with the buffer 4.

[0028] In this embodiment, the buffer spring 45 and the buffer member 4 are provided to prevent the high-pressure medium from directly scouring the inner wall of the casting, thereby greatly improving the wear resistance of the casting.

[0029] Example 2

[0030] See also Figure 1-5A high-precision wear-resistant casting, including a elbow joint casting body 1, the elbow joint casting body 1 includes a first connector 2 and a second connector 3, the first connector 2 and the second connector 3 are both provided with an anti-corrosion coating and a buffer coating, which belongs to the prior art, the first connector 2 and the second connector 3 are formed by casting, and their production method and working principle are well known to those skilled in the art, and will not be described in detail here, one end of the first connector 2 is provided with an oil inlet 21, one end of the second connector 3 is provided with an oil outlet 31, one end of the oil inlet 21 is connected to a mounting groove 22, the inner wall of the mounting groove 22 is in contact with a buffer 4, the outer side of the buffer 4 is sleeved with a buffer spring 45, and the buffer spring 45 can buffer the buffer 4 through compression elastic force, A buffer groove 41 is provided at one end of the buffer part 4. The buffer groove 41 and the buffer hole 42 belong to the existing technology and can buffer the high-pressure medium. A buffer hole 42 is provided at the bottom of the buffer groove 41. One end of the buffer hole 42 is connected to the oil outlet 31. A tapered portion 23 is provided at the connection between the first connector 2 and the second connector 3. The tapered portion 23 can remove the angle between the first connector 2 and the second connector 3, thereby simplifying the structure. A connecting portion 32 is provided at one end of the second connector 3. A fixing sleeve 61 is fixedly sleeved on the surface of the connecting portion 32. A protrusion 6 is provided on the side of the fixing sleeve 61. The protrusion 6 simplifies the structure of the casting. A reinforcing portion 62 is provided at one end of the protrusion 6. The surface of the reinforcing portion 62 is fixed to the surface of the second joint 3, thereby increasing the connection firmness of the protrusion 6.

[0031] The inner wall of the oil inlet 21 is connected with a positioning sleeve 5 through a thread, one end of the positioning sleeve 5 is in contact and extrusion with the end face of the buffer 4, the surface of the positioning sleeve 5 is provided with an external thread, the positioning sleeve 5 is used to limit the installation position of the buffer 4, one end of the positioning sleeve 5 is fixedly connected with a limiting portion 51, the shape of the limiting portion 51 is a circular ring, the surface of the limiting portion 51 is in contact and connected with the inner wall of the oil inlet 21, so as to facilitate the positioning of the positioning sleeve 5, a connecting hole 52 is provided at the center position of the positioning sleeve 5, one end of the connecting hole 52 is connected with the buffer groove 41, and the shape of the connecting hole 52 is a polygon.

[0032] In this embodiment, the tapered portion 23 and the protruding portion 6 assembled later can reduce the structural complexity of the casting, thereby improving the casting accuracy of the casting.

[0033] During use of the high-precision wear-resistant casting, high-pressure medium enters the casting through the oil inlet 21, and then impacts the buffer 4 for buffering. The buffer 4 is impacted to squeeze the buffer spring 45, thereby performing another buffering. After buffering, the medium enters the oil outlet 31 through the buffer hole 42 and is discharged from the casting. The buffer spring 45 and the buffer 4 are provided to prevent the high-pressure medium from directly scouring the inner wall of the casting, thereby greatly improving the wear resistance of the casting. In addition, the conical portion 23 and the raised portion 6 assembled later can reduce the structural complexity of the casting, thereby improving the casting accuracy of the casting.

[0034] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A high-precision wear-resistant casting, comprising a elbow joint casting body (1), the elbow joint casting body (1) comprising a first connector (2) and a second connector (3), one end of the first connector (2) being provided with an oil inlet (21), and one end of the second connector (3) being provided with an oil outlet (31), characterized in that: One end of the oil inlet (21) is connected to a mounting groove (22), the inner wall of the mounting groove (22) is in contact with a buffer component (4), the outer side of the buffer component (4) is sleeved with a buffer spring (45), one end of the buffer component (4) is provided with a buffer groove (41), the bottom of the buffer groove (41) is provided with a buffer hole (42), one end of the buffer hole (42) is connected to the oil outlet (31), a conical portion (23) is provided at the connection between the first connector (2) and the second connector (3), one end of the second connector (3) is provided with a connecting portion (32), a fixed sleeve (61) is fixedly sleeved on the surface of the connecting portion (32), a protrusion (6) is provided on the side of the fixed sleeve (61), and a reinforcing portion (62) is provided at one end of the protrusion (6).

2. A high-precision wear-resistant casting according to claim 1, characterized in that: The buffer (4) is made of an oil-resistant and puncture-proof buffer material. A reinforcing plate (44) is fixedly compounded inside the buffer (4). One end of the reinforcing plate (44) is fixedly connected to a pressing pad (43). The surface of the pressing pad (43) is in contact with one end of a buffer spring (45).

3. A high-precision wear-resistant casting according to claim 1, characterized in that: The inner wall of the oil inlet (21) is connected to a positioning sleeve (5) via a thread, one end of the positioning sleeve (5) is in contact and extrusion with the end surface of the buffer (4), and the surface of the positioning sleeve (5) is provided with an external thread.

4. A high-precision wear-resistant casting according to claim 3, characterized in that: One end of the positioning sleeve (5) is fixedly connected to a limiting portion (51), the limiting portion (51) is in the shape of a circular ring, and the surface of the limiting portion (51) is in contact with the inner wall of the oil inlet (21).

5. A high-precision wear-resistant casting according to claim 3, characterized in that: A connecting hole (52) is provided at the center of the positioning sleeve (5), one end of the connecting hole (52) is connected to the buffer groove (41), and the connecting hole (52) is in the shape of a polygon.

6. A high-precision wear-resistant casting according to claim 2, characterized in that: The reinforcing plate (44) is cylindrical in shape, and the surface of the reinforcing plate (44) is provided with holes distributed at equal intervals.

7. A high-precision wear-resistant casting according to claim 2, characterized in that: The squeezing pad (43) is in the shape of a circular ring.

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