Tool for installing check ring

Abstract

The utility model discloses a tool for installing a check ring, which comprises a pressing sleeve, a taper sleeve, the check ring, a positioning sleeve and a workpiece, the workpiece is sleeved with the positioning sleeve, the taper sleeve is installed at the top of the workpiece, the taper sleeve is sleeved with the check ring, and the taper sleeve and the positioning sleeve are sleeved with the pressing sleeve at the same time; the taper sleeve is of a cylindrical structure, an embedding groove, a blocking groove and a sliding groove are formed in the taper sleeve and are of a through structure, the sliding groove is located at the bottom of the embedding groove, the sliding groove is located at the top of the blocking groove, the caliber of the embedding groove is larger than that of the blocking groove, and the caliber of the sliding groove is smaller than that of the blocking groove. The embedded groove, the blocking groove and the sliding groove are all of a cylindrical structure. According to the device, the damage caused by uneven stress of the check ring is reduced, the sealing reliability is enhanced, the rejection rate of the check ring is reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of retaining ring installation, in particular to a tool for retaining ring installation. Background Art

[0002] In the high-pressure sealing field of 35-70 MPa, retaining rings play a crucial role. Under high-pressure environments, O-rings and other sealing components are prone to "gap bite," a phenomenon in which the sealing component is squeezed into the gap on the low-pressure side by the pressure, leading to seal failure and leakage of fluid or air between metal parts. The installation of a retaining ring can prevent this phenomenon. By placing a retaining ring on the low-pressure side of the O-ring, it limits the squeeze of the O-ring between the metal parts, preventing excessive compression of the sealing component, thereby ensuring sealing performance and system reliability, and ensuring the normal and long-term operation of the system. Secondly, under high pressure, O-rings and other sealing components may be squeezed out of the groove, causing seal failure. The use of retaining rings can significantly improve the pressure-bearing capacity of the sealing component, preventing it from being squeezed out of the groove under high pressure, thereby protecting the integrity and stability of the sealing component. Finally, retaining rings help maintain the lubrication of the sealing component. Under high-pressure environments, the frictional resistance of the sealing component increases, which can easily lead to wear and heat. Retaining rings can extend the service life of the sealing component by reducing friction. Therefore, retaining rings are essential in the design and manufacture of high-pressure sealing devices.

[0003] Existing retaining ring installation equipment has the following defects:

[0004] During the installation process, existing retaining ring installation equipment cannot guarantee the concentricity of the tapered sleeve and the sleeve. This can lead to uneven force distribution across the retaining ring during installation, potentially damaging the ring and causing seal failure. This also results in a high retaining ring scrap rate and increased material costs. Chamfers on the workpiece's outer diameter can create tiny grooves that can cause the retaining ring to become stuck and prevent it from being installed properly. Furthermore, this type of tool has certain limitations. Therefore, a solution is needed. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides a tool for installing a retaining ring to solve the problems raised in the above background technology.

[0007] (2) Technical solution

[0008] To achieve the above purpose, the utility model is implemented through the following technical solutions: a tool for installing a retaining ring, comprising a pressing sleeve, a tapered sleeve, a retaining ring, a positioning sleeve and a workpiece, the positioning sleeve being sleeved on the workpiece, the tapered sleeve being installed on the top of the workpiece, the retaining ring being sleeved on the tapered sleeve, and the pressing sleeve being sleeved on the tapered sleeve and the positioning sleeve at the same time; the tapered sleeve is in a cylindrical structure, and an embedding groove, a retaining groove and a sliding groove are respectively provided inside the tapered sleeve, the embedding groove, the retaining groove and the sliding groove are through-type structures, the sliding groove is located at the bottom of the embedding groove, the sliding groove is located at the top of the retaining groove, the diameter of the embedding groove is larger than the diameter of the retaining groove, the diameter of the sliding groove is smaller than the diameter of the retaining groove, and the embedding groove, the retaining groove and the sliding groove are all in a cylindrical structure.

[0009] Preferably, the positioning sleeve is in a cylindrical structure, a sleeve groove is provided at the bottom of the positioning sleeve, the sleeve groove is in a cylindrical structure, a through-port is provided at the top of the positioning sleeve, and the through-port and the sleeve groove are in a through-type structure.

[0010] Preferably, the cone sleeve is in a cylindrical structure, a positioning groove is provided at the bottom of the cone sleeve, and the positioning groove is in a truncated cone structure.

[0011] Preferably, the top of the workpiece is a truncated cone structure.

[0012] (3) Beneficial effects

[0013] The utility model provides a tool for installing a retaining ring, which has the following beneficial effects:

[0014] This type of tool for retaining ring installation is particularly important because it can improve installation reliability and sealing reliability. The present invention provides a retaining ring installation tool that achieves precise installation of the retaining ring, improves sealing quality, and effectively addresses the shortcomings of the existing technology. A guide portion is added to the top of the conventional tapered sleeve to ensure that the retaining ring is not affected by the operator's state and proficiency during the downward pressure process, so that the pressing sleeve and the tapered sleeve are always in a concentric state, thereby reducing damage to the retaining ring caused by uneven force, enhancing sealing reliability, reducing the scrap rate of the retaining ring, and reducing costs.

[0015] In this type of tool for installing retaining rings, the lower part of the tapered sleeve is not flat and completely fits the upper plane of the workpiece, but has a chamfer inside. This structure is used when the upper end of the workpiece has a chamfer. It can effectively prevent the retaining ring from getting stuck in the chamfer of the plane where the workpiece and the tapered sleeve match when pressed down, making the assembly smoother.

[0016] In this tool for installing the retaining ring, the tapered sleeve is positioned by a positioning sleeve, which solves the problem of no positioning hole on the workpiece and enables the retaining ring to be assembled using the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic structural diagram of the utility model as a whole.

[0018] In the figure, 1, press sleeve; 2, taper sleeve; 3, retaining ring; 4, positioning sleeve; 5, workpiece; 6, embedding groove; 7, retaining groove; 8, sliding groove; 9, insertion groove; 10, penetration port; 11, positioning groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1 , the embodiment of the utility model provides a technical solution: a tool for installing a retaining ring, comprising a pressing sleeve 1, a tapered sleeve 2, a retaining ring 3, a positioning sleeve 4 and a workpiece 5, wherein the positioning sleeve 4 is sleeved on the workpiece 5, the tapered sleeve 2 is installed on the top of the workpiece 5, the retaining ring 3 is sleeved on the tapered sleeve 2, and the pressing sleeve 1 is sleeved on the tapered sleeve 2 and the positioning sleeve 4 at the same time;

[0021] The problem is that the cone sleeve 2 is of cylindrical structure, and an embedding groove 6, a retaining groove 7 and a sliding groove 8 are respectively provided inside the cone sleeve 2. The embedding groove 6, the retaining groove 7 and the sliding groove 8 are of through-type structure, and the sliding groove 8 is located at the bottom of the embedding groove 6, and the sliding groove 8 is located at the top of the retaining groove 7. The diameter of the embedding groove 6 is larger than that of the retaining groove 7, and the diameter of the sliding groove 8 is smaller than that of the retaining groove 7. The embedding groove 6, the retaining groove 7 and the sliding groove 8 are all of cylindrical structure. When in use, the staff puts the retaining ring 3 onto the cone sleeve 2, and then puts the pressing sleeve 1 onto the cone sleeve 2, and finally presses the pressing sleeve 1. The pressing sleeve 1 pushes the retaining ring 3 on the cone sleeve 2 down through the embedding groove 6, and pushes the retaining ring 3 onto the workpiece 5.

[0022] Furthermore, the positioning sleeve 4 has a cylindrical structure, and a sleeve groove 9 is provided at the bottom of the positioning sleeve 4. The sleeve groove 9 has a cylindrical structure, and a penetration port 10 is provided at the top of the positioning sleeve 4. The penetration port 10 and the sleeve groove 9 are a through-type structure. The positioning sleeve 4 can be inserted into the workpiece 5, and the top of the workpiece 5 can pass through the penetration port 10 to prevent the installation of a retaining ring on the workpiece 5.

[0023] Differently, the cone sleeve 2 is in a cylindrical structure, and a positioning groove 11 is provided at the bottom of the cone sleeve 2. The positioning groove 11 is in a truncated cone structure. The positioning groove 11 at the bottom of the cone sleeve 2 is for facilitating the embedding of the truncated cone structure at the top of the workpiece 5, thereby achieving the purpose of positioning.

[0024] Effectively, the top of the workpiece 5 is in a truncated cone-shaped structure, and the truncated cone-shaped structure of the top of the workpiece 5 is to facilitate the embedding of the bottom of the tapered sleeve 2.

[0025] Working Principle: Initial positioning: First, the positioning sleeve 4 is accurately passed through the workpiece 5 and firmly placed on the predetermined step below the workpiece groove. This step ensures that the positioning sleeve provides a reliable reference for the subsequent assembly process.

[0026] Placement of the taper sleeve 2: Subsequently, the taper sleeve 2 is accurately placed on the top of the workpiece 5, ensuring that the axis of the taper sleeve 2 coincides with the center line of the workpiece 5. The completion of this step marks the completion of the assembly preparation work.

[0027] Pre-setting of retaining ring 3: Next, place the retaining ring to be installed on the top of the tapered sleeve 2, ensuring that the contact surface between the retaining ring 3 and the tapered sleeve 2 is flat and without offset.

[0028] Initial compression and guidance: Use the narrow hole end of the pressing sleeve 1 to cover the tapered sleeve 2, and apply moderate force to gradually move the retaining ring downward along the tapered surface of the tapered sleeve 2 (which also serves as a guide rod) until the retaining ring 3 moves to the middle of the tapered sleeve 2. At this point, due to the tapered design of the tapered sleeve 2, the retaining ring begins to be subjected to a uniform radial expansion force, while the narrow hole end of the pressing sleeve 1 cannot move further downward due to the geometric restrictions of the tapered sleeve.

[0029] Direction Change and Compression Depth: After confirming that the retaining ring 3 has fully expanded and reached the center of the tapered sleeve 2, the operator rotates the pressing sleeve 1 so that its wide end is aligned with the workpiece groove. Continued downward pressure is applied, and the wide end of the pressing sleeve 1 pushes the retaining ring 3 further in until it is completely seated in the workpiece groove. During this process, the cooperation between the pressing sleeve 1 and the positioning sleeve 4 ensures the stability and accuracy of the installation of the retaining ring 3.

[0030] Installation Complete: When the retaining ring 3 is completely seated in the workpiece groove and fits snugly on the shaft, the installation process is complete. At this point, all tool components can be removed for subsequent inspection or assembly.

[0031] The entire use process fully utilizes the taper design of the tapered sleeve 2, the multi-stepped holes of the pressing sleeve and the precise positioning function of the positioning sleeve to achieve the installation of the retaining ring 3 and significantly improve the sealing performance.

[0032] The components of the present invention, including 1, a press sleeve, 2, a taper sleeve, 3, a retaining ring, 4, a positioning sleeve, 5, a workpiece, 6, an embedding groove, 7, a retaining groove, 8, a sliding groove, 9, a sleeve groove, 10, a penetration opening, and 11, a positioning groove, are all commonly used standard parts or components known to those skilled in the art. Their structures and principles are readily available to those skilled in the art through technical manuals or conventional experimental methods. The present invention addresses the problem that, during the installation process of existing retaining ring installation equipment, the concentricity of the taper sleeve and the sleeve cannot be guaranteed. During installation, there is a possibility that uneven force may be applied to various parts of the retaining ring, causing damage to the retaining ring and resulting in sealing failure. This also results in a high scrap rate for the retaining ring and increases material costs. The chamfered outer circumference of the workpiece can form tiny grooves that can cause the retaining ring to become stuck and prevent it from being installed properly. Furthermore, this type of tool has certain application limitations. By combining the above components, the present invention can reduce damage to the retaining ring caused by uneven force, enhance sealing reliability, reduce the scrap rate of the retaining ring, and reduce costs.

[0033] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0034] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A tool for installing a retaining ring, characterized in that: The invention comprises a pressing sleeve (1), a tapered sleeve (2), a retaining ring (3), a positioning sleeve (4) and a workpiece (5), wherein the positioning sleeve (4) is sleeved on the workpiece (5), the tapered sleeve (2) is installed on the top of the workpiece (5), the retaining ring (3) is sleeved on the tapered sleeve (2), and the pressing sleeve (1) is sleeved on the tapered sleeve (2) and the positioning sleeve (4) at the same time; The cone sleeve (2) is a cylindrical structure. An embedding groove (6), a retaining groove (7) and a sliding groove (8) are respectively provided inside the cone sleeve (2). The embedding groove (6), the retaining groove (7) and the sliding groove (8) are through-type structures. The sliding groove (8) is located at the bottom of the embedding groove (6), and the sliding groove (8) is located at the top of the retaining groove (7). The diameter of the embedding groove (6) is larger than that of the retaining groove (7), and the diameter of the sliding groove (8) is smaller than that of the retaining groove (7). The embedding groove (6), the retaining groove (7) and the sliding groove (8) are all cylindrical structures.

2. A tool for retaining ring installation according to claim 1, characterized in that: The positioning sleeve (4) is a cylindrical structure, a sleeve groove (9) is provided at the bottom of the positioning sleeve (4), the sleeve groove (9) is a cylindrical structure, a through-port (10) is provided at the top of the positioning sleeve (4), and the through-port (10) and the sleeve groove (9) are a through-type structure.

3. A tool for mounting a retaining ring according to claim 1, characterized in that: The cone sleeve (2) is in a cylindrical structure, and a positioning groove (11) is provided at the bottom of the cone sleeve (2), and the positioning groove (11) is in a truncated cone structure.

4. A tool for retaining ring installation according to claim 1, characterized in that: The top of the workpiece (5) is in a truncated cone-shaped structure.

Images