Elastic check ring for large-size shaft

Abstract

The utility model belongs to the technical field of circlips for shafts, and relates to a large-size circlip for shafts, which is mounted on a grooved shaft, is used for fixing axial movement of parts, and comprises a circlip body with a mounting shaft diameter D larger than 300mm, the circlip body is provided with a port, a mounting caliper hole is arranged at the port, the mounting caliper hole is a U-shaped through groove, and the diameter D of the mounting shaft is larger than 300mm. The side, close to the port, of the U-shaped through groove is a plane, and the side, away from the port, of the U-shaped through groove is semicircular. The large-size elastic check ring for the shaft does not need to be installed through a special tool and can be installed in a narrow space through tools such as a slotted screwdriver, installation convenience is improved, and the problem that installation cannot be conducted in the narrow space is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of shaft snap rings and relates to a large-size shaft snap ring. Background Art

[0002] With the rapid development of the machinery industry, shaft snap rings are increasingly widely used in various equipment. At present, the industry mainly produces and designs according to the standard of GB / T894-2017 "Shaft Snap Rings", which details the specification dimensions of snap rings with shaft diameters ranging from 3 to 300 mm. However, in practical engineering applications, the demand for snap rings with shaft diameters exceeding 300 mm is not uncommon.

[0003] Due to the lack of relevant standard guidance, the design of elastic snap rings with extra-large shaft diameters often refers to the snap rings with a shaft diameter of 300 mm. This approach has exposed many problems in practice. Especially in terms of resilience, the resilience of large-shaft-diameter snap rings is significantly enhanced, resulting in extremely difficult installation processes. In narrow spaces, this installation problem may even become an insurmountable technical obstacle, seriously affecting the use efficiency and safety of equipment. Therefore, for elastic snap rings with extra-large shaft diameters, developing a new type of shaft snap ring that is easy to install and has stable performance has become an urgent need in the industry. Content of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a large-size shaft snap ring to solve the problem of difficult installation of existing large-size shaft snap rings caused by the lack of design standards for large-size shaft snap rings.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A large-size shaft snap ring is installed on a grooved shaft and is used to fix the axial movement of components. It includes a snap ring body with an installed shaft diameter D greater than 300 mm. The snap ring body has a port, and an installation caliper hole is provided at the port. The installation caliper hole is a U-shaped through groove, and one side of the U-shaped through groove close to the port is a plane, and the side far from the port is a semicircle.

[0007] Further, let the thickness of the snap ring body 1 be S, the width be b, the port width be L, the inner diameter of the semicircle in the installation caliper hole be R, the edge distance between the two installation caliper holes be L1, and the vertical distance from the center of the semicircle of the installation caliper hole to the outer edge of the snap ring body be L2;

[0008] When 300 < D ≤ 400 mm, S is 5.5 mm; when 400 < D ≤ 500 mm, S is 6 mm; when 500 < D ≤ 600 mm, S is 7 mm; when 600 < D ≤ 800 mm, S is 8 mm; when 800 < D ≤ 1000 mm, S is 9 mm; when D > 1000, S is 10 mm;

[0009] When S ≤ 6 mm, b = 3 × S; when S > 6 mm, b = 2.6 × S;

[0010] Where R = 0.5 × S, L = S, L1 = 2.6 × S, L2 = 0.6 × b.

[0011] The beneficial effects of the present utility model are as follows:

[0012] A large-sized shaft snap ring provided by the present utility model fills the gap in the design standard of large-sized shaft snap rings, and solves the problem that the large-sized shaft snap ring has a large resilience force and is inconvenient to install due to being designed with reference to the shaft snap ring with a shaft diameter of 300 mm in the national standard;

[0013] Secondly, the large-sized shaft snap ring provided by the present utility model does not need to be installed with a special tool (such as a shaft snap ring installation caliper), and tools such as a flat-tip screwdriver can also be used for installation in a narrow space, which increases the convenience of installation and solves the problem that it cannot be installed in a narrow space.

[0014] Other advantages, objectives, and features of the present utility model will be described to some extent in the subsequent description, and to some extent, they will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the objectives, technical solutions, and advantages of the present utility model clearer, the present utility model will be described in detail and preferably with reference to the accompanying drawings, where:

[0016] Figure 1 It is a schematic structural diagram of a large-sized shaft snap ring in the embodiment (the left one is a plan view and the right one is a side view);

[0017] Figure 2 It is a partially enlarged schematic diagram of the installation opening in a large-sized shaft snap ring in the embodiment;

[0018] Figure 3 It is a schematic structural diagram of the shaft end for installing the large-sized shaft snap ring in the embodiment.

[0019] Reference numerals: 1 - retaining ring body; 2 - mounting caliper hole. Detailed implementation mode

[0020] The following uses specific specific examples to illustrate the implementation mode of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through different specific implementation modes. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present utility model in a schematic manner. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0021] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and cannot be understood as a limitation to the present utility model; in order to better illustrate the embodiments of the present utility model, some components in the drawings will be omitted, enlarged or reduced, which does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0022] In the drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or position relationship, it is based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation to the present utility model. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0023] Please refer to Figures 1 to 2 , which is a large-size shaft retaining ring installed on a grooved shaft for fixing the axial movement of components. It includes a retaining ring body 1. The retaining ring body 1 has a port, and a mounting caliper hole 2 is provided at the port. The mounting caliper hole 2 is a U-shaped through groove, and the side of the U-shaped through groove close to the port is a plane, and the side away from the port is a semi-circle;

[0024] Let the mounting shaft diameter of the retaining ring body 1 be D, the thickness be S, the width be b, the port width be L, the inner diameter of the semi-circle in the mounting caliper hole 2 be R, the edge distance between the two mounting caliper holes 2 be L1, and the vertical distance from the center of the mounting caliper hole 2 to the outer edge of the retaining ring body 1 be L2;

[0025] And the corresponding relationships between the above parameter values are as follows:

[0026] S is determined according to the installation shaft diameter D, and the values of S are as follows in the table:

[0027]

[0028] And according to the value of S, determine the values of the remaining parameters:

[0029] b = 3×S (when S≤6), b is rounded to 2.6×S (when S≤6)

[0030] d = D - b; R is rounded to 0.5×S; L is rounded to S

[0031] L1 is rounded to 2.6×S; L2 = 0.6×b.

[0032] Specifically, in combination with GB / T894 - 2017 and the optimal material utilization rate, select the structural dimensions with the same width b, which is convenient for improving the material utilization rate and processing; for the installation caliper hole 2 at the port, adopt the method of opening slots on the left and right sides respectively, which expands the range of installation tools and the installation space, especially in a narrow space, the installation operability is stronger.

[0033] Please refer to Figure 3 , which is the shaft end structure for installing the large - size shaft snap ring, and its structural design parameters are as follows:

[0034] m is the width of the installation slot for the shaft snap ring, and the corresponding value is m = S + 0.2 (mm);

[0035] d1 is the bottom diameter of the installation slot for the shaft snap ring, and the corresponding value is d1 = D - 0.5×b;

[0036] n is the thickness of the outer retaining edge of the installation slot for the shaft snap ring, and the corresponding value is n = 3×S;

[0037] The requirements for the remaining shaft snap rings are the same as those in GB / T894 - 2017.

[0038] A large - size shaft snap ring provided by this embodiment can be installed by using the shaft snap ring installation caliper during installation in a conventional space and a narrow space, or can also be installed in a small space by using tools such as a flat - tip screwdriver, which greatly increases the installation convenience of this type of part.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the present technical solution, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An elastic retaining ring for a large-sized shaft, which is installed on a grooved shaft and used to fix the axial movement of components, is characterized in that: It includes a retaining ring body with an installed shaft diameter D greater than 300 mm. The retaining ring body has a port, and an installation caliper hole is provided at the port. The installation caliper hole is a U-shaped through groove, and the side of the U-shaped through groove close to the port is a plane, and the side far from the port is a semi-circle.

2. The elastic retaining ring for large-sized shafts according to claim 1, characterized in that: Let the thickness of the retaining ring body (1) be S, the width be b, the port width be L, the inner diameter of the semi-circle in the installation caliper hole be R, the edge distance between the two installation caliper holes be L1, and the vertical distance from the center of the semi-circle of the installation caliper hole to the outer edge of the retaining ring body be L2; When 300 < D ≤ 400 mm, S is 5.5 mm; when 400 < D ≤ 500 mm, S is 6 mm; when 500 < D ≤ 600 mm; S is 7 mm; when 600 < D ≤ 800 mm, S is 8 mm; when 800 < D ≤ 1000 mm, S is 9 mm; when D > 1000, S is 10 mm; When S ≤ 6 mm, b = 3 × S; when S ≤ 6 mm, b = 2.6 × S; The R = 0.5 × S, L = S, L1 = 2.6 × S, L2 = 0.6 × b.

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