Gearbox shaft body rubber sealing piece
By designing a movable connection between the fixed ring and the tension ring structure, the problem of easy leakage of traditional gearbox shaft seals under high-speed rotation is solved, achieving the effects of simplified replacement and improved sealing.
Patent Information
- Application Number
- CN202520338122.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Traditional gearbox shaft seals are prone to leakage under high-speed rotation and mechanical vibration, and replacement and maintenance are complex, making it difficult to maintain stable sealing pressure.
A gearbox shaft rubber seal was designed, comprising a fixed ring, a movable ring, and an anti-detachment component. The fixed ring and the movable ring are movably connected. The deformation of the seal ring is compensated by a tension ring and an annular spring to ensure sealing performance, and the movable connection simplifies the replacement of the seal ring.
It simplifies the sealing ring replacement process, improves the dynamic sealing compensation capability of the seals, enhances the sealing performance at the connection between the output shaft and the gearbox body, and reduces maintenance costs.
Smart Images
Figure CN223782042U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a sealing element technical field especially relates to a gearbox shaft rubber sealing element. BACKGROUND
[0002] With the rapid development of automobile industry, as the core component of power transmission, the sealing performance of gearbox directly affects the reliability and service life of the whole machine. The sealing element at the connection of gearbox output shaft and box body needs to withstand high-speed rotation, oil corrosion and mechanical vibration for a long time, and the traditional rubber sealing element generally has problems such as single structure design, complex maintenance and replacement, insufficient dynamic sealing compensation capacity, etc., which easily leads to oil leakage or external contamination, and further causes transmission system failure.
[0003] At present, common shaft sealing elements mostly adopt integrated structure design, for example, the form of vulcanization forming or press fitting of fixed ring and sealing ring directly. Such structure needs to disassemble the sealing assembly or replace the whole sealing element after the wear of sealing ring, which is complicated in operation steps and high in maintenance cost. In addition, the traditional sealing element is easy to deform under the action of centrifugal force when the output shaft rotates at high speed, which leads to the gap between the sealing ring and the contact surface of the shaft body, and it is difficult to maintain stable sealing pressure. Therefore, we propose a gearbox shaft rubber sealing element. SUMMARY
[0004] The utility model mainly solves the technical problem existing in the prior art, provides a gearbox shaft rubber sealing element.
[0005] In order to realize the above purpose, the utility model adopts the following technical scheme, a gearbox shaft rubber sealing element, including gearbox body, the inside rotation of gearbox body is installed with first sealing ring, the corresponding position of gearbox body is penetrated with installation slot on the tail end of first sealing ring, and the tail end of first sealing ring extends to the outside of gearbox body through the inside of installation slot, the inside of installation slot is fixedly installed with fixed ring, the movable ring is movably installed on the fixed ring, the inner wall of movable ring is fixedly installed with second sealing ring, the tail end of second sealing ring is in contact with the outer wall of output shaft, and second sealing ring is elastically arranged, the inner wall of fixed ring is fixedly installed with anti-off assembly.
[0006] As a preferred, the anti-off assembly includes a tension ring fixedly connected with the inner wall of the fixed ring, the tail end of the tension ring is arc-shaped, and the outer wall of the tension ring is wound with a ring-shaped spring.
[0007] As a preferred, a plurality of fixed bolts are movably installed on the movable ring, the tail end of the fixed bolt is threadedly connected with the corresponding position on the fixed ring, and the movable ring is movably connected with the fixed ring through the fixed bolt.
[0008] As preferred, a docking ring is also fixedly installed on the fixed ring, and an installation ring is threadedly connected to the docking ring.
[0009] As preferred, the first sealing ring is arc-shaped in cross section, and the convex surface of the first sealing ring faces the inside of the gearbox body.
[0010] As preferred, the second sealing ring is "C"-shaped in cross section, and the opening of the second sealing ring faces the inside of the gearbox body.
[0011] Advantages
[0012] The utility model provides a gearbox shaft body rubber sealing piece. Have following advantages:
[0013] (1) the gearbox shaft body rubber sealing piece, the movable connection between fixed ring and movable ring, the movable ring can be disassembled from the fixed ring, the user can replace new movable ring and second sealing ring installation on the fixed ring, the replacement step of second sealing ring is simplified, and the high sealing property of output shaft and gearbox body connection place is guaranteed.
[0014] (2) the gearbox shaft body rubber sealing piece, the end of the second sealing ring is extruded through the obliquely arranged tension ring, so that the outer wall of the second sealing ring is tightly attached to the outer wall of the output shaft, thereby preventing the output shaft from deforming under the action of centrifugal force when rotating at high speed, and the second sealing ring is compensated when deforming through the tension ring and the annular spring, thereby preventing the second sealing ring from being separated from the outer wall of the output shaft after deforming. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other implementation drawings can be obtained without creative labor on the basis of the provided drawings.
[0016] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not define the limiting conditions for the implementation of the utility model, so they do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that the utility model can produce, should still fall within the scope of the technical content disclosed by the utility model.
[0017] Figure 1 It is a whole structure schematic view of the utility model;
[0018] Figure 2 It is the whole structure section view schematic diagram of the utility model;
[0019] Figure 3 It is the fixed ring and the movable ring structure split schematic diagram of the utility model;
[0020] Figure 4 It is the utility model Figure 2 The enlarged structure schematic diagram of A place in the middle.
[0021] Legend: 1, gearbox body;2, first sealing ring;3, output shaft;4, installation groove;5, installation ring;6, butt joint ring;7, fixed ring;8, movable ring;9, fixed bolt;10, second sealing ring;11, tension ring;12, annular spring. Specific implementation
[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0023] As Figures 1-4 shown, a gearbox shaft body rubber sealing piece, including gearbox body 1, the inside rotation of gearbox body 1 is installed with first sealing ring 2, and the installation groove 4 is opened through the corresponding position of the end of first sealing ring 2 on gearbox body 1, and the end of first sealing ring 2 extends to the outside of gearbox body 1 through the inside of installation groove 4, the inside of installation groove 4 is fixedly installed with fixed ring 7, the movable ring 8 is movably installed on fixed ring 7, the inner wall of movable ring 8 is fixedly installed with second sealing ring 10, the end of second sealing ring 10 is in contact with the outer wall of output shaft 3, and second sealing ring 10 is elastically arranged, and the inner wall of fixed ring 7 is fixedly installed with anti-drop assembly;
[0024] Wherein the fixed ring 7 and the movable ring 8 are movably connected, after the movable ring 8 is detached from the fixed ring 7, the user can replace the new movable ring 8 and second sealing ring 10 and install them on the fixed ring 7, which simplifies the replacement steps of the second sealing ring 10 and ensures the high sealing property of the connection between the output shaft 3 and the gearbox body 1, and the setting of the anti-drop assembly can prevent the second sealing ring 10 from being deformed under the action of centrifugal force when the output shaft 3 rotates at high speed, thereby ensuring the sealing function of the second sealing ring 10 to the connection between the output shaft 3 and the gearbox body 1.
[0025] As Figure 4As shown, the anti-detachment component includes a tension ring 11 fixedly connected to the inner wall of the fixing ring 7. The end of the tension ring 11 is arc-shaped, and an annular spring 12 is wound around the outer wall of the tension ring 11. The annular spring 12 is a metal spring commonly used in the prior art. The tension ring 11, which is inclined, can compress the end of the second sealing ring 10, so that the outer wall of the second sealing ring 10 is close to the outer wall of the output shaft 3, thereby preventing the output shaft 3 from deforming under the action of centrifugal force when rotating at high speed. The tension ring 11 and the annular spring 12 can compensate for the deformation of the second sealing ring 10, and prevent the second sealing ring 10 from detaching from the outer wall of the output shaft 3 after deformation.
[0026] like Figure 3 As shown, multiple fixing bolts 9 are movably installed on the movable ring 8. The ends of the fixing bolts 9 are threadedly connected to the corresponding positions on the fixed ring 7, and the movable ring 8 is movably connected to the fixed ring 7 through the fixing bolts 9. The movable connection between the movable ring 8 and the fixed ring 7 through the fixing bolts 9 makes it easy for the user to disassemble and replace the second sealing ring 10 after long-term use, simplifying the replacement process of the second sealing ring 10.
[0027] like Figure 4 As shown, a docking ring 6 is also fixedly installed on the fixing ring 7. The docking ring 6 is internally threaded with an installation ring 5. A first sealing ring 2 is fixedly connected to the inner wall of the installation ring 5. The installation ring 5 can be removed from the inside of the docking ring 6 by rotation. The first sealing ring 2 fixedly installed on the installation ring 5 can provide a secondary seal for the output shaft 3, thereby enhancing the sealing performance of the output shaft 3 during use.
[0028] like Figure 4 As shown, the cross-section of the first sealing ring 2 is arc-shaped, and the convex surface of the first sealing ring 2 faces the inside of the gearbox body 1; the arc shape of the first sealing ring 2 means that the width of the first sealing ring 2 is greater than the width of the gap between the inner wall of the mounting ring 5 and the outer wall of the output shaft 3, which facilitates the end of the first sealing ring 2 to squeeze the outer wall of the output shaft 3 tightly, thereby enhancing the sealing performance of the output shaft 3 during use.
[0029] like Figure 4 As shown, the cross-section of the second sealing ring 10 is a "C" shaped structure, and the opening of the second sealing ring 10 faces the internal area of the gearbox body 1; when the end of the second sealing ring 10 is inside the gap between the tension ring 11 and the output shaft 3, the tension ring 11 is located inside the "C" shaped structure.
[0030] The working principle of this utility model is as follows: In use, the fixed ring 7 and the tension ring 11 are located inside the mounting groove 4 opened on the gearbox body 1. The outer wall of the end of the tension ring 11 is wound with a ring spring 12, which limits the end of the tension ring 11. The output end of the output shaft 3 extends through the center of the tension ring 11 to the outside of the gearbox body 1. The user can fix the movable ring 8 on the fixed ring 7 using multiple fixing bolts 9. The end of the second sealing ring 10, which is fixedly connected to the movable ring 8, is pressed into the gap between the outer wall of the tension ring 11 and the outer wall of the output shaft 3, and the end of the second sealing ring 10 is in surface contact with the outer wall of the output shaft 3. At this time, the inclined tension ring 11 can press the end of the second sealing ring 10, so that the second sealing ring 10... The outer wall of the second sealing ring 10 is tightly attached to the outer wall of the output shaft 3, thereby preventing the output shaft 3 from deforming under the action of centrifugal force when rotating at high speed. The tension ring 11 and the ring spring 12 can compensate for the deformation of the second sealing ring 10, preventing the second sealing ring 10 from separating from the outer wall of the output shaft 3 after deformation. The inner wall of the mating ring 6 is also threaded with a detachable mounting ring 5. The end of the first sealing ring 2 fixedly installed on the inner wall of the mounting ring 5 is also tightly attached to the outer wall of the output shaft 3, which can play a secondary sealing role at the connection between the output shaft 3 and the gearbox body 1. The first sealing ring 2 is arc-shaped, that is, the width of the first sealing ring 2 is greater than the width of the gap between the inner wall of the mounting ring 5 and the outer wall of the output shaft 3, which makes it easier for the end of the first sealing ring 2 to squeeze the outer wall of the output shaft 3 tightly, thereby enhancing the sealing performance of the output shaft 3 during use.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A gearbox shaft rubber seal, comprising a gearbox body (1), characterized in that: The gearbox body (1) is rotatably mounted with a first sealing ring (2). A mounting groove (4) is provided on the gearbox body (1) at a position corresponding to the end of the first sealing ring (2). The end of the first sealing ring (2) extends through the inside of the mounting groove (4) to the outside of the gearbox body (1). A fixing ring (7) is fixedly mounted inside the mounting groove (4). A movable ring (8) is movably mounted on the fixing ring (7). A second sealing ring (10) is fixedly mounted on the inner wall of the movable ring (8). The end of the second sealing ring (10) contacts the outer wall of the output shaft (3). The second sealing ring (10) is elastically set. An anti-detachment component is fixedly mounted on the inner wall of the fixing ring (7).
2. The gearbox shaft rubber seal according to claim 1, characterized in that: The anti-detachment component includes a tension ring (11) fixedly connected to the inner wall of the fixing ring (7). The end of the tension ring (11) is arc-shaped, and a ring spring (12) is wound around the outer wall of the tension ring (11).
3. A gearbox shaft rubber seal according to claim 2, characterized in that: Multiple fixing bolts (9) are movably installed on the movable ring (8). The ends of the fixing bolts (9) are threadedly connected to the corresponding positions on the fixed ring (7), and the movable ring (8) is movably connected to the fixed ring (7) through the fixing bolts (9).
4. A gearbox shaft rubber seal according to claim 3, characterized in that: A docking ring (6) is also fixedly installed on the fixing ring (7). The internal thread of the docking ring (6) is connected to the mounting ring (5), and the inner wall of the mounting ring (5) is fixedly connected to the first sealing ring (2).
5. A gearbox shaft rubber seal according to claim 4, characterized in that: The first sealing ring (2) has an arc-shaped cross section, and the convex surface of the first sealing ring (2) faces the interior of the gearbox body (1).
6. A gearbox shaft rubber seal according to claim 5, characterized in that: The second sealing ring (10) has a "C" shaped cross-section, and the opening of the second sealing ring (10) faces the internal area of the gearbox body (1).