A wear-resistant metal casting

Abstract

The utility model relates to the technical field of hydraulic cylinder accessories, and in particular to a wear-resistant metal casting, comprising a rear end cover casting body, a sealing plug body is integrally formed at the front end middle position of the rear end cover casting body, and an outer sleeve is sleeved on the outside of the sealing plug body, a first sealing ring is embedded in the inner deep position of the outer sleeve, and a magnetic block is clamped on the back of the first sealing ring. In the utility model, by providing the first sealing ring, the second sealing member, the sealing plug body, the cylinder body, the outer sleeve and the magnetic block, the wear-resistant metal casting can be conveniently used to perform double-sided sealing treatment on the connection between the sealing plug body and the cylinder body by utilizing a double-sided sealing structure when assembling the hydraulic cylinder. At the same time, compared with the traditional single-sided sealing structure, the use of the double-sided sealing structure can fully improve the sealing effect of the entire wear-resistant metal casting and reduce the influence of high-temperature oil on the sealing component.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinder accessories, in particular to a wear-resistant metal casting. Background Art

[0002] When assembling the hydraulic cylinder, the rear end cover of the hydraulic cylinder, which belongs to the category of metal castings, mainly plays the role of sealing the cylinder and protecting the rear end of the cylinder. At the same time, most rear end covers of hydraulic cylinders are made of wear-resistant cast iron as raw material and are manufactured by casting technology;

[0003] In practice, when the existing wear-resistant metal casting, i.e., the rear end cover of the hydraulic cylinder, is installed on the cylinder, the oil sealing treatment is generally performed through a sealing component sleeved on the outside of the plug. However, considering that the temperature of the internal oil will increase when the hydraulic component runs for a long time, the rear end cover of the hydraulic cylinder adopts a single-sided sealing setting, which will easily lead to the problem of poor sealing effect and long-term use in the actual process of the entire metal casting. Therefore, a wear-resistant metal casting is proposed to address the above problems. Utility Model Content

[0004] The utility model aims to provide a wear-resistant metal casting to solve the problem that the existing wear-resistant metal casting, ie the rear end cover of the hydraulic oil cylinder, has a poor single-sided sealing effect when in use.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A wear-resistant metal casting comprises a rear end cover casting body, a sealing plug body is integrally formed at the front end middle position of the rear end cover casting body, and an outer sleeve is sleeved on the outside of the sealing plug body, a first sealing ring is embedded in the deep position inside the outer sleeve, and a magnetic block is clamped on the back of the first sealing ring, an oil cylinder body is inserted on the inner side of the first sealing ring, and an auxiliary conical retaining ring is fixedly connected to the outer side of the middle part of the oil cylinder body, a limiting hole is opened on the outside of the outer sleeve through integral molding, and a reserved oil hole is provided on the front end face of the sealing plug body.

[0007] Preferably, the four corners of the rear end cover casting body are respectively provided with reserved mounting holes through integral molding, and the rear end cover casting body and the outer sleeve are integrally molded.

[0008] Preferably, the sealing plug body has a "T"-shaped structure, and the sealing plug body and the first sealing ring are sleeved and connected, and the cross-sectional shape of the first sealing ring is a "U"-shaped structure.

[0009] Preferably, the inner side of the first sealing ring and the outer end of the cylinder body are matched in shape, and the two sides of the cross-section of the first sealing ring are arranged to be high and low. A second sealing member is bonded to the bottom position of the first sealing ring, and the cross-section of the second sealing member is a triangular structure. The second sealing member and the auxiliary conical retaining ring are butt-jointed.

[0010] Preferably, a magnetic block with a “T”-shaped structure is mounted on the back of the first sealing ring, and the magnetic blocks are distributed in a ring array structure along the center point of the first sealing ring.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, by providing the first sealing ring, the second sealing member, the sealing plug body, the cylinder body, the outer sleeve and the magnetic block, it is convenient for the wear-resistant metal casting to be able to perform double-sided sealing treatment on the sealing plug body and the cylinder body that are clamped together under the limitation of the outer sleeve and the magnetic block by utilizing the double-sided sealing structure assembled by the first sealing ring and the second sealing member. At the same time, compared with the traditional single-sided sealing structure, the use of the double-sided sealing structure can fully improve the sealing effect of the entire wear-resistant metal casting, reduce the influence of high-temperature oil on the sealing component, extend the service life of the casting, and prevent the wear-resistant metal casting from leaking during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the inner structure of the outer sleeve of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the first sealing ring of the utility model;

[0016] Figure 4 This is a schematic diagram of the back structure of the first sealing ring of the utility model;

[0017] Figure 5 This is a half-cut structural schematic diagram of the first sealing ring of the utility model;

[0018] Figure 6 This is a schematic diagram of the structure of the magnetic suction block of the utility model.

[0019] In the figure: 1. rear end cover casting body; 2. sealing plug body; 3. outer sleeve; 4. first sealing ring; 5. second sealing member; 6. magnetic block; 7. cylinder body; 8. auxiliary conical retaining ring; 9. reserved mounting hole; 10. reserved oil hole; 11. limiting hole. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-6 , the utility model provides a technical solution:

[0022] A wear-resistant metal casting comprises a rear end cover casting body 1, a sealing plug body 2 is integrally formed at the front middle part of the rear end cover casting body 1, an outer sleeve 3 is sleeved on the outside of the sealing plug body 2, a first sealing ring 4 is embedded in the deep position inside the outer sleeve 3, a magnetic block 6 is clamped on the back of the first sealing ring 4, an oil cylinder body 7 is inserted on the inner side of the first sealing ring 4, an auxiliary conical retaining ring 8 is fixedly connected to the outer side of the middle part of the oil cylinder body 7, a limiting hole 11 is opened on the outside of the outer sleeve 3 through integral molding, and a reserved oil hole 10 is provided on the front end face of the sealing plug body 2.

[0023] like Figure 1 As shown, the four corners of the rear end cover casting body 1 are respectively provided with reserved mounting holes 9 through integral molding, and the rear end cover casting body 1 and the outer sleeve 3 are integrally formed. By providing two groups of reserved mounting holes 9, this arrangement mainly serves to assist the entire wear-resistant casting to quickly connect other parts of the hydraulic cylinder through the connecting rod component (such as the front end cover of the hydraulic cylinder which is also made of wear-resistant cast iron).

[0024] like Figure 1 and Figure 2 As shown, the sealing plug body 2 has a "T"-shaped structure, and the sealing plug body 2 and the first sealing ring 4 are sleeved and connected, and the cross-sectional shape of the first sealing ring 4 is a "U"-shaped structure. Since the first sealing ring 4 and the second sealing member 5 are both made of rubber material, this arrangement will facilitate the first sealing ring 4 to use its own resilience to overcome the more protruding head at the front end of the sealing plug body 2, ensuring that it can be quickly installed.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the inner side of the first sealing ring 4 and the outer end of the cylinder body 7 are matched in shape, and the two sides of the cross section of the first sealing ring 4 are set to be high and low. The second sealing member 5 is bonded to the bottom position of the first sealing ring 4, and the cross-sectional shape of the second sealing member 5 is a triangular structure. The second sealing member 5 and the auxiliary conical retaining ring 8 are butt-jointed. The supporting butt joint between the second sealing member 5 and the auxiliary conical retaining ring 8 will make the cylinder body 7 more fit. After the sealing operation is completed, multiple bolt fixings can be screwed and installed into the limiting hole 11 in sequence to extrude and limit the cylinder body 7 inserted into the first sealing ring 4.

[0026] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a magnetic block 6 with a "T"-shaped structure is clamped on the back of the first sealing ring 4, and the magnetic blocks 6 are distributed in a circular array structure along the center point of the first sealing ring 4. When the magnetic blocks 6 are embedded in the reserved gap between the sealing plug body 2 and the outer sleeve 3 along with the sealing plug body 2, multiple magnetic blocks 6 will magnetically attract the inner side surface of the outer sleeve 3 to assist in limiting the installation of the sealing plug body 2.

[0027] Working process: When using the wear-resistant metal casting to assemble the hydraulic cylinder, the first sealing ring 4 can be firstly put on the outside of the sealing plug body 2, so that it can be stuck in the reserved gap between the sealing plug body 2 and the outer sleeve 3 from the front to the back, and at the same time, it is assisted by the magnetic effect of multiple magnetic blocks 6 and the rear end cover casting body 1 for limitation, and then the cylinder body 7 is pushed into the inner side of the first sealing ring 4, that is, the outside of the sealing plug body 2 is covered, and the inclined surface of the auxiliary conical retaining ring 8 contacts the second sealing member 5 to connect with it. At the same time, the first sealing ring 4 and the second sealing member 5 which are sleeved on the outside of the sealing plug body 2 and stuck in the outer sleeve 3 will respectively perform effective sealing treatment from the inner and outer surfaces of the cylinder body 7, and finally, after being connected to the front end cover through a pull rod component, and the oil circuit is connected to the reserved oil hole 10 through a high-temperature resistant pipe, the combined assembly operation of the entire wear-resistant metal casting can be completed.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant metal casting, comprising a rear end cover casting body (1), characterized in that: A sealing plug body (2) is integrally formed at the front middle of the rear end cover casting body (1), and an outer sleeve (3) is sleeved on the outside of the sealing plug body (2). A first sealing ring (4) is embedded in the inner depth of the outer sleeve (3), and a magnetic block (6) is clamped on the back of the first sealing ring (4). A cylinder body (7) is inserted on the inner side of the first sealing ring (4), and an auxiliary conical clamping ring (8) is fixedly connected to the outer side of the middle of the cylinder body (7). A limiting hole (11) is formed on the outside of the outer sleeve (3), and a reserved oil hole (10) is provided on the front end surface of the sealing plug body (2).

2. A wear-resistant metal casting according to claim 1, characterized in that: The four corners of the rear end cover casting body (1) are respectively provided with reserved mounting holes (9) through integral molding, and the rear end cover casting body (1) and the outer sleeve (3) are integrally molded.

3. A wear-resistant metal casting according to claim 1, characterized in that: The sealing plug body (2) has a T-shaped structure, and the sealing plug body (2) and the first sealing ring (4) are sleeved and connected, and the cross-sectional shape of the first sealing ring (4) is a U-shaped structure.

4. A wear-resistant metal casting according to claim 1, characterized in that: The inner side of the first sealing ring (4) and the outer end of the oil cylinder body (7) are arranged to match each other in shape, and the two sides of the cross section of the first sealing ring (4) are arranged to be one high and one low. A second sealing member (5) is bonded to the bottom of the first sealing ring (4), and the cross section of the second sealing member (5) is arranged to be triangular in shape. The second sealing member (5) and the auxiliary conical clamping ring (8) are butt-jointed.

5. A wear-resistant metal casting according to claim 1, characterized in that: A magnetic attraction block (6) having a T-shaped structure is clamped on the back of the first sealing ring (4), and the magnetic attraction blocks (6) are distributed in a ring array structure along the center point of the first sealing ring (4).

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