Portable anti-twisting assembly tool for O-shaped rings for shafts
By designing convenient anti-torsion assembly tooling for shafts, the lower half ring, upper half ring, limit ring and stretching structure are used to achieve efficient anti-torsion installation of the O-ring on the shaft, solving the problems of low efficiency, high cost and seal failure in the existing technology, and achieving efficient and low-cost O-ring installation.
Patent Information
- Application Number
- CN202421437986.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-24
AI Technical Summary
The prior art has low efficiency and high labor intensity during the installation process of shaft O-rings, and is prone to distortion of the O-ring and seal failure, which is high in cost and not strong in versatility.
A convenient anti-torsion assembly tool for shaft O-ring is designed, including a rotatably connected lower half ring and upper half ring, limit ring, concave and convex structure and stretching structure. Through the cooperation of these components, anti-torsion installation of the O-ring is achieved.
The O-ring is efficient and anti-torsion installation on the shaft. The overall tooling is light, has high installation efficiency, low cost and strong versatility, which solves the problems of low efficiency, high cost and seal failure in the existing technology.
Smart Images
Figure CN222661575U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a convenient anti-twist assembly tool for an O-ring for a shaft, belonging to the field of sealing component assembly. Background Art
[0002] As one of the main seals in the machinery industry, the O-ring has the advantages of simple structure and low cost. The O-ring is usually installed in the shaft by machining an O-groove. This is called the shaft O-ring. The industry mostly uses the manual assembly method, which involves putting the O-ring on the shaft end and then rolling the O-ring into the O-groove. This method is not only inefficient and labor-intensive, but also causes the O-ring to twist and cause the seal to fail. At present, some companies also use O-ring installation equipment, but this method is costly and not very versatile. Summary of the invention
[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides a convenient O-ring anti-twist assembly tool for a shaft, which can realize the O-ring anti-twist assembly with high efficiency and low cost.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts a convenient shaft O-ring anti-twist assembly tool, comprising:
[0005] The tooling body comprises a lower semicircular ring and an upper semicircular ring which are rotatably connected, wherein the lower semicircular ring and the upper semicircular ring cooperate to form a circular ring for mounting an O-ring, and the circular ring can be mounted on the shaft and move along the shaft;
[0006] A limiting ring, one end of which is mounted on the lower semicircular ring, and the other end of which is used to limit the rotation angle of the upper semicircular ring.
[0007] In some embodiments, a concave-convex structure is provided between the lower semicircular ring and the upper semicircular ring, a bolt is installed on the concave-convex structure, and the end of the bolt is fastened with a nut, and the lower semicircular ring and the upper semicircular ring can both rotate freely along the axis of the bolt.
[0008] In some embodiments, the concave-convex structure includes an inner concave portion arranged on the lower semicircular ring and an outer convex portion arranged on the upper semicircular ring, and both the inner concave portion and the outer convex portion are provided with connecting through holes.
[0009] In some embodiments, both the lower semicircular ring and the upper semicircular ring are provided with a support ring for installing an O-ring, and the outer side of the support ring is open.
[0010] In some embodiments, blocking rings are provided on the lower semicircular ring and the upper semicircular ring, the expansion ring is located outside the blocking ring, and the O-ring is installed on the expansion ring and limited by the blocking ring.
[0011] In some embodiments, a certain gap is provided between the expansion ring on the lower semicircular ring and the expansion ring on the upper semicircular ring.
[0012] In some embodiments, the lower semicircular ring and the upper semicircular ring are provided with a support structure for supporting the lower semicircular ring and the upper semicircular ring.
[0013] In some embodiments, the support structure includes annular grooves respectively arranged on the lower semicircular ring and the upper semicircular ring and cooperating with each other;
[0014] The annular groove of the lower semicircular ring is connected to the annular groove of the upper semicircular ring by a strong rubber band, and the strong rubber band provides the opening force.
[0015] In some embodiments, the limiting ring is fastened to the lower semicircular ring by screws.
[0016] In some embodiments, the upper semicircular ring and the lower semicircular ring are made of polyurethane material, and the limiting ring is made of steel.
[0017] Compared with the prior art, the portable O-ring anti-twist assembly tool for shafts of the utility model can realize the anti-twist installation of O-rings on shafts. The tool is light as a whole, has high installation efficiency, low cost, strong versatility, and has high application value in the field of O-ring installation for shafts. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1 It is a structural schematic diagram of the anti-twist assembly tool of the utility model;
[0020] Figure 2 It is an exploded schematic diagram of the anti-twist assembly tool of the utility model;
[0021] Figure 3 This is a schematic diagram of the use state of the anti-twist assembly tool of the utility model;
[0022] In the figure: 1. lower semicircular ring, 2. upper semicircular ring, 3. strong rubber band, 4. limiting ring, 5. bolt, 6. nut, 7. screw, 8. annular groove, 9. blocking ring, 10. O-ring, 11. expansion ring, 12. O-groove, 13. shaft, 14. straight line stretching part. DETAILED DESCRIPTION
[0023] In order to make the objectives, technical solutions and advantages of the present invention more clear, the technical solutions of the present application are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.
[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "assembly", "fixation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0025] like Figure 1 , Figure 2 and Figure 3 As shown, a convenient O-ring anti-twist assembly tool for a shaft includes a tool body and a limit ring 4 installed on the tool body;
[0026] The tooling body comprises a lower semicircular ring 1 and an upper semicircular ring 2 which are rotatably connected, wherein the lower semicircular ring 1 and the upper semicircular ring 2 cooperate to form a circular ring for mounting an O-ring 10, wherein the circular ring can be mounted on a shaft 13 and move along the shaft 13, and the O-ring 10 is assembled into an O-shaped groove 12 on the shaft 13;
[0027] One end of the limiting ring 4 is installed on the lower semicircular ring 1, and the other end is used to limit the rotation angle of the upper semicircular ring 2. When the limiting ring 4 contacts the upper semicircular ring 2, the lower semicircular ring 1 and the upper semicircular ring 2 are in the maximum expanded position; when the opening ends of the lower semicircular ring 1 and the upper semicircular ring 2 contact, the lower semicircular ring 1 and the upper semicircular ring 2 are in the maximum closed position.
[0028] In some embodiments, Figure 1 , Figure 2 and Figure 3 As shown, a concave-convex structure is provided between the lower semicircular ring 1 and the upper semicircular ring 2, a bolt 5 is installed on the concave-convex structure, and the end of the bolt 5 is fastened with a nut 6, and the lower semicircular ring 1 and the upper semicircular ring 2 can both rotate freely along the bolt axis.
[0029] In some embodiments, Figure 2As shown, the concave-convex structure includes an inner concave portion provided on the lower semicircular ring 1 and an outer convex portion provided on the upper semicircular ring 2, and both the inner concave portion and the outer convex portion are provided with connecting through holes for installing the bolt 5. Through the cooperation between the inner concave portion and the outer convex portion, it is ensured that both the lower semicircular ring 1 and the upper semicircular ring 2 can rotate freely around the axis of the bolt 5.
[0030] In some embodiments, Figure 1 , Figure 2 and Figure 3 As shown, the lower semicircular ring 1 and the upper semicircular ring 2 are both provided with a spreading ring 11 for installing the O-ring 10, and the outer side of the spreading ring 11 is open, which is convenient for installing the O-ring 10. The spreading ring 11 enables the O-ring 10 to be installed on the ring formed by the lower semicircular ring 1 and the upper semicircular ring 2, and when the ring moves on the shaft 13, it can drive the O-ring 10 to move synchronously, and finally send the O-ring 10 to the O-shaped groove 12 on the shaft 13.
[0031] In some embodiments, Figure 1 , Figure 2 and Figure 3 As shown, the lower semicircular ring 1 and the upper semicircular ring 2 are provided with a blocking ring 9, the expansion ring 11 is located outside the blocking ring 9, and the O-ring 10 is installed on the expansion ring 11 and limited by the blocking ring 9. Relying on the design of the blocking ring 9, the external placement of the O-ring 10 can be limited to prevent the position of the O-ring 10 from changing when the ring formed by the lower semicircular ring 1 and the upper semicircular ring 2 moves on the shaft 13, thereby affecting the later assembly.
[0032] In some embodiments, Figure 1 , Figure 3 As shown, a certain gap is provided between the expansion ring 11 on the lower semicircular ring 1 and the expansion ring 11 of the upper semicircular ring 2 along the ring, and a double-sided opening structure is formed to facilitate that when the O-ring 10 is installed on the expansion rings 11 of the upper and lower semicircular rings, the two sides of the O-ring 10 can have two straight stretching portions 14 that are stretched in a straight line, such as Figure 3 As shown, when the O-ring 10 is subsequently installed in the O-groove 12, the linear stretching portion 14 can be stuck in the O-groove 12, and then the tooling can be pulled out in the reverse direction to complete the assembly, which is more convenient and efficient to operate.
[0033] In some embodiments, Figure 1 , Figure 2 and Figure 3 As shown, the lower semicircular ring 1 and the upper semicircular ring 2 are provided with a support structure, which can support the lower semicircular ring 1 and the upper semicircular ring 2 to form a circular ring, so that the diameter of the formed circular ring is the same as the diameter of the shaft 13 of the pre-installed O-ring 10, thereby facilitating the movement of the tooling on the shaft 13.
[0034] In some embodiments, Figure 1 , Figure 2 and Figure 3 As shown, the expansion structure includes annular grooves 8 respectively arranged on the lower semicircular ring 1 and the upper semicircular ring 2 and cooperating with each other;
[0035] The annular groove 8 of the lower semicircular ring 1 is connected to the annular groove 8 of the upper semicircular ring 2 by a strong rubber band 3, and the strong rubber band 3 provides the opening force between the lower semicircular ring 1 and the upper semicircular ring 2. Each annular groove 8 is provided with a plurality of notches, which is convenient for installing and using different strong rubber bands 3. By using the strong rubber band 3, the lower semicircular ring 1 and the upper semicircular ring 2 are conveniently opened.
[0036] In some embodiments, Figure 1 , Figure 3 As shown, the limiting ring 4 is fastened to the lower semicircular ring 1 by screws 7, and the installation stability is good. The number of the screws 7 is not less than two.
[0037] In some embodiments, the upper semicircular ring 2 and the lower semicircular ring 1 are made of polyurethane material, and the limiting ring 4 is made of steel, which has low material cost and is easy to process and use.
[0038] like Figure 3 As shown, after the tooling is assembled, relying on the action of the strong rubber band 3, the lower semicircular ring 1 and the upper semicircular ring 2 are in a naturally expanded state. After the operator manually presses the lower semicircular ring 1 and the upper semicircular ring 2, the tooling is closed, and the O-ring 10 is placed on the expansion ring 11 of the lower semicircular ring 1 and the upper semicircular ring 2. At this time, the O-ring 10 is limited by the end face of the blocking ring 9. The operator stops pressing the lower semicircular ring 1 and the upper semicircular ring 2 and releases the pressure. The lower semicircular ring 1 and the upper semicircular ring 2 are automatically expanded, and the expansion ring 11 automatically expands the O-ring 10 to the pre-assembled state. At this time, the limiting ring 4 is in contact with the upper semicircular ring 2. After expansion, the inner hole of the tooling becomes a standard circle, and its diameter is the same as the diameter of the shaft 13 of the pre-installed O-ring 10. Since a certain gap is provided on both sides of the expansion ring 11 between the upper semicircular ring 2 and the lower semicircular ring 1 to form an open structure, the upper and lower parts of the O-ring 10 in the pre-installed state are in contact with the outer circle of the expansion ring 11, so the two sides of the O-ring 10 are in a free linear stretching state. At this time, the total tensile deformation of the O-ring 10 is small, which is beneficial to protect the O-ring 10 and can reduce the tooling expansion force. The tooling is slowly pushed along the axial direction to the position of the O-shaped groove 12 in the shaft 13. At this time, the O-ring 10 (i.e., the linear stretching part 14) in the free linear stretching state on both sides automatically slides into the O-shaped groove 12, and the tooling is pulled out in the reverse direction. The O-ring 10 in the free linear stretching state on both sides automatically gets stuck in the O-shaped groove 12, and the O-ring 10 automatically exits the tooling, and the assembly is completed.
[0039] The utility model discloses a convenient shaft O-ring anti-twist assembly tool, which can realize the anti-twist installation of the O-ring on the shaft. The tool is light as a whole, has high installation efficiency, low cost and strong versatility, and has high application value in the field of shaft O-ring installation.
[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A portable O-ring anti-twist assembly tool for a shaft, characterized in that: include: The tool body comprises a lower semicircular ring (1) and an upper semicircular ring (2) which are rotatably connected, wherein the lower semicircular ring (1) and the upper semicircular ring (2) cooperate to form a circular ring for mounting an O-ring (10), and the circular ring can be mounted on a shaft (13) and move along the shaft (13); A limiting ring (4) has one end mounted on the lower semicircular ring (1) and the other end used to limit the rotation angle of the upper semicircular ring (2).
2. A portable O-ring anti-twist assembly tool for shaft according to claim 1, characterized in that: A concave-convex structure is provided between the lower semicircular ring (1) and the upper semicircular ring (2), a bolt (5) is installed on the concave-convex structure, and the end of the bolt (5) is fastened with a nut (6), and the lower semicircular ring (1) and the upper semicircular ring (2) can both rotate freely along the axis of the bolt.
3. A portable O-ring anti-twist assembly tool for shaft according to claim 2, characterized in that: The concave-convex structure comprises an inner concave portion arranged on the lower semicircular ring (1) and an outer convex portion arranged on the upper semicircular ring (2), and both the inner concave portion and the outer convex portion are provided with connecting through holes.
4. A portable O-ring anti-twist assembly tool for shaft according to claim 1, characterized in that: The lower semicircular ring (1) and the upper semicircular ring (2) are both provided with a spreading ring (11) for mounting the O-ring (10), and the outer side of the spreading ring (11) is open.
5. A portable O-ring anti-twist assembly tool for shaft according to claim 4, characterized in that: The lower semicircular ring (1) and the upper semicircular ring (2) are provided with blocking rings (9), the expansion ring (11) is located outside the blocking ring (9), and the O-ring (10) is installed on the expansion ring (11) and is limited by the blocking ring (9).
6. The portable O-ring anti-twist assembly tool for shaft according to claim 4, characterized in that: A certain gap is provided between the expansion ring (11) on the lower semicircular ring (1) and the expansion ring (11) on the upper semicircular ring (2).
7. The portable O-ring anti-twist assembly tool for shaft according to claim 1, characterized in that: The lower semicircular ring (1) and the upper semicircular ring (2) are provided with a support structure for supporting the lower semicircular ring (1) and the upper semicircular ring (2).
8. The portable O-ring anti-twist assembly tool for shaft according to claim 7, characterized in that: The expansion structure comprises annular grooves (8) respectively arranged on the lower semicircular ring (1) and the upper semicircular ring (2) and cooperating with each other; The annular clamping groove (8) of the lower semicircular ring (1) is connected to the annular clamping groove (8) of the upper semicircular ring (2) via a strong rubber band (3), and the strong rubber band (3) provides the opening force.
9. The portable O-ring anti-twist assembly tool for shaft according to claim 1, characterized in that: The limiting ring (4) is fastened to the lower semicircular ring (1) by means of screws (7).
10. The portable O-ring anti-twist assembly tool for shaft according to claim 1, characterized in that: The upper semicircular ring (2) and the lower semicircular ring (1) are made of polyurethane material, and the limiting ring (4) is made of steel.