A leakage-proof compression ring for a reducer sealing end cover

Abstract

The utility model discloses a kind of sealing end cover anti-leakage compression rings of speed reducer, including ring body and elastic ring.There is beneficial effect: the present application is installed between end cover flange and speed reducer shell, when end cover flange and speed reducer shell are fixed by bolt, bolt is extruded ring body in the process of tightening, the present application two sides surface is respectively with end cover flange and speed reducer shell and is pressed tightly, play the role of preliminary anti-leakage, simultaneously, first inner inflatable ring and second inner inflatable ring swell when leaking, first time adsorb oil material, volume increases, to further extrude end cover flange and speed reducer shell, block the gap of oil leakage place, avoid the further leakage of oil material, when first inner inflatable ring and second inner inflatable ring fail, second outer inflatable ring and first outer inflatable ring further swell, carry out further anti-leakage work, improve anti-seep efficiency significantly through multilayer anti-leakage measure, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of anti-leakage technology for gearbox end caps, specifically to an anti-leakage clamping ring for a gearbox sealing end cap. Background Technology

[0002] The lubrication of gears and bearings in a speed reducer directly affects its service life. Lubricating oil after bearing lubrication usually leaks through the output shaft cover. Even if multiple seals or oil seals are added, long-term transmission output can easily lead to seal damage and leakage of lubricating oil.

[0003] A search revealed application number CN201520319113.8, entitled "A Double-Layer Leak-Proof End Cap." The application describes a flange end cap with a sealing cylinder at the lower end that passes through the output or input shaft. The inner wall of the sealing cylinder features a labyrinthine multi-channel sealing groove. A sealing ring is positioned and installed corresponding to the bearing seat hole in the gearbox. After bearing lubrication, the lubricating oil is sealed by the labyrinthine multi-channel sealing groove. A small amount of lubricating oil leaks into the oil collection groove, which then returns to the cavity formed by the bearing, sealing ring, and outer wall of the sealing cylinder via the return oil channel, reducing leakage along the transmission path. The amount of lubricating oil leaking outward from the output or input shaft; the oil seal of the sealing step at the upper end of the flange end cover is pressed by the sealing plate, which can further improve the sealing performance between the output or input shaft and the end cover as a whole, and prevent leakage from the output or input shaft through the end cover, thus improving the sealing performance. However, this application is fixedly connected to the reducer housing through the flange, and there is a lack of anti-leakage measures between the flange and the reducer housing. Once the internal anti-leakage structure fails, the oil will leak along the gap between the flange and the reducer housing, affecting the anti-leakage effect. Further improvements can be made.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a leak-proof clamping ring for a speed reducer sealing end cover, which has the advantage of high leak-proof efficiency, thereby solving the problems mentioned in the background technology.

[0006] To achieve the aforementioned advantages of high leakage prevention efficiency, the specific technical solution adopted by this utility model is as follows: A leak-proof clamping ring for a speed reducer sealing end cap includes a ring body and an elastic ring. The ring body has a central hole in the middle, and a first inner expansion ring and a second inner expansion ring are respectively embedded on the outer side of the central hole on both sides of the ring body. A first outer expansion ring and a second outer expansion ring are respectively embedded on the outer side of the first inner expansion ring and the outer side of the second inner expansion ring on both sides of the ring body. An elastic ring is embedded inside the ring body outside the central hole.

[0007] Furthermore, the elastic ring includes an outer straight section, an inner straight section, and an inclined section, and the inclined section, the outer straight section, and the inner straight section are an integral structure, and the elastic ring as a whole is a bowl-shaped structure.

[0008] Furthermore, bolt holes are provided on the surface of the ring body, and the bolt holes are located between the first inner expansion ring and the first outer expansion ring.

[0009] Furthermore, a through hole is provided on the surface of the inclined section corresponding to the bolt hole position, and the diameter of the through hole is larger than the diameter of the bolt hole.

[0010] Furthermore, the bolt holes correspond to the bolt mounting holes of the end cover flange, and multiple sets of bolt holes are distributed at equal angles along the central axis of the ring.

[0011] Furthermore, the ring body, elastic ring, first inner expansion ring, second inner expansion ring, first outer expansion ring, and second outer expansion ring are arranged coaxially.

[0012] Furthermore, the first inner expansion ring and the first outer expansion ring protrude from one side of the ring body surface.

[0013] Furthermore, the second inner expansion ring and the second outer expansion ring protrude from the other side surface of the ring body.

[0014] Compared with the prior art, this utility model provides a leak-proof clamping ring for the sealing end cover of a speed reducer, which has the following beneficial effects: (1) This utility model adopts a first inner expansion ring, a second inner expansion ring, a first outer expansion ring, and a second outer expansion ring. This application is installed between the end cover flange and the reducer housing. When the end cover flange and the reducer housing are fixed by bolts, the bolts squeeze the ring body during the tightening process. At the same time, the first inner expansion ring, the second inner expansion ring, the first outer expansion ring, and the second outer expansion ring are squeezed, so that the two sides of this application are respectively pressed against the end cover flange and the reducer housing, which plays a preliminary role in preventing leakage. At the same time, when leakage occurs, the first inner expansion ring and the second inner expansion ring absorb oil and expand immediately, increasing their volume, thereby further squeezing the end cover flange and the reducer housing, sealing the gap at the oil leak point, and preventing further oil leakage. When the first inner expansion ring and the second inner expansion ring fail, the second outer expansion ring and the first outer expansion ring further absorb oil and expand, performing further anti-leakage work. Through multi-layer anti-leakage measures, the anti-leakage efficiency is significantly improved, and the work efficiency is improved.

[0015] (2) This utility model adopts an elastic ring. The elastic ring is a metal ring that is embedded in the ring body. When the end cover flange is installed, the bolts are gradually tightened. The inclined section of the elastic ring is compressed and deformed, generating elastic force, which in turn generates a thrust on the end cover flange. The thrust acts on the bolt, thereby increasing the friction between the bolt threads and the bolt hole, avoiding the problem of bolt loosening, improving the stability of installation, avoiding leakage accidents caused by loosening, and further improving work efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view of a leak-proof clamping ring for a gearbox sealing end cover proposed in this utility model; Figure 2 This is a schematic diagram of the back elevation of a leak-proof clamping ring for a speed reducer sealing end cover, as proposed in this utility model. Figure 3 This is a cross-sectional view (AA) of a leak-proof clamping ring for a gearbox sealing end cover proposed in this utility model. Figure 4 This is the front view of the elastic ring proposed in this utility model.

[0018] In the picture: 1. Ring body; 2. Central hole; 3. Elastic ring; 31. Inclined section; 32. Outer straight section; 33. Inner straight section; 34. Through hole; 4. First inner expansion ring; 5. First outer expansion ring; 6. Second inner expansion ring; 7. Second outer expansion ring; 8. Bolt hole. Detailed Implementation

[0019] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0020] According to an embodiment of the present invention, a leak-proof clamping ring for a speed reducer sealing end cover is provided.

[0021] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4As shown, a leak-proof clamping ring for a speed reducer sealing end cover according to an embodiment of this utility model includes a ring body 1 and an elastic ring 3. The ring body 1 is made of rubber, a common material. A central hole 2 is provided in the middle of the ring body 1 to facilitate the passage of the speed reducer's main shaft. A first inner expansion ring 4 and a second inner expansion ring 6 are respectively embedded on the outer sides of the central hole 2 on both sides of the ring body 1. The first inner expansion ring 4 and the second inner expansion ring 6 are arranged correspondingly. A first outer expansion ring 5 and a second outer expansion ring 7 are respectively embedded on the outer sides of the first inner expansion ring 4 and the second inner expansion ring 6 on both sides of the ring body 1. The first outer expansion ring 5 and the second outer expansion ring 7 are arranged correspondingly. The first inner expansion ring 4, the second inner expansion ring 6, the first outer expansion ring 5, and the second outer expansion ring 7 are all made of oil-swellable rubber. An elastic ring 3 is embedded inside the ring body 1 outside the central hole 2. The elastic ring 3 is integrally stamped from a thin metal sheet. This application is installed between the end cover flange and the reducer housing. When the end cover flange and the reducer housing are fixed with bolts, the bolts compress the ring 1 during tightening, and simultaneously compress the first inner expansion ring 4, the second inner expansion ring 6, the first outer expansion ring 5, and the second outer expansion ring 7, so that the two sides of this application are respectively pressed against the end cover flange and the reducer housing, playing a preliminary role in preventing leakage. At the same time, when leakage occurs, the first inner expansion ring 4 and the second inner expansion ring 6 absorb oil and expand, increasing their volume, thereby further compressing the end cover flange and the reducer housing, sealing the gap at the oil leak point, and preventing further oil leakage. When the first inner expansion ring 4 and the second inner expansion ring 6 fail, the second outer expansion ring 7 and the first outer expansion ring 5 further absorb oil and expand, performing further leakage prevention work. Through multiple leakage prevention measures, the leakage prevention efficiency is significantly improved, and the work efficiency is increased.

[0022] In one embodiment, the elastic ring 3 includes an outer straight section 32, an inner straight section 33, and an inclined section 31. The inclined section 31, the outer straight section 32, and the inner straight section 33 are an integral structure. The outer straight section 32 and the inner straight section 33 play a role in stabilizing the structure and improving the stability of the elastic ring 3 when embedded. At the same time, they prevent the ends of the inclined section 31 from piercing the material of the ring body 1. The elastic ring 3 has a bowl-shaped structure. When compressed, the inclined section 31 plays a major role in deformation and generates a rebound force. When the end cover flange is installed, the bolts are gradually tightened. The inclined section 31 of the elastic ring 3 is compressed and deformed, generating a spring force, which in turn generates a thrust on the end cover flange. The thrust acts on the bolts, thereby increasing the friction between the bolt threads and the bolt holes 8, avoiding bolt loosening, improving installation stability, preventing leakage accidents caused by loosening, and further improving work efficiency.

[0023] In one embodiment, bolt holes 8 are provided on the surface of the ring body 1, and the bolt holes 8 are located between the first inner expansion ring 4 and the first outer expansion ring 5, which is a common installation structure. The bolt holes 8 correspond to the bolt mounting holes of the end cover flange. The outer diameter of the ring body 1 is the same as the outer diameter of the end cover flange, and the inner diameter of the central hole 2 of the ring body 1 is the same as the inner diameter of the end cover flange. The bolt holes 8 are distributed in multiple sets at equal angles along the central axis of the ring body 1, which improves the stability of bolt fixing.

[0024] In one embodiment, a through hole 34 is provided on the surface of the inclined section 31 corresponding to the position of the bolt hole 8, and the diameter of the through hole 34 is larger than the diameter of the bolt hole 8. The through hole 34 adopts an hourglass-shaped structure and is inclined. The hourglass-shaped through hole 34 facilitates the bolt to pass through and be fixedly installed.

[0025] In one embodiment, the ring 1, elastic ring 3, first inner expansion ring 4, second inner expansion ring 6, first outer expansion ring 5, and second outer expansion ring 7 are arranged coaxially to improve the stability of the structure and reduce eccentric instability.

[0026] In one embodiment, the first inner expansion ring 4 and the first outer expansion ring 5 protrude from one side of the ring body 1, with a protrusion height of no more than 1 mm, to ensure the contact efficiency of the first inner expansion ring 4 and the second inner expansion ring 6.

[0027] In one embodiment, the second inner expansion ring 6 and the second outer expansion ring 7 protrude from the other side surface of the ring body 1, with a protrusion height of no more than 1 mm, to ensure the contact efficiency of the first outer expansion ring 5 and the second outer expansion ring 7.

[0028] Working principle: This application is installed between the end cover flange and the reducer housing. When the end cover flange and the reducer housing are fixed with bolts, during the tightening process, the bolts compress the ring 1, and simultaneously compress the first inner expansion ring 4, the second inner expansion ring 6, the first outer expansion ring 5, and the second outer expansion ring 7, so that the two sides of this application are respectively pressed against the end cover flange and the reducer housing, playing a preliminary role in preventing leakage. At the same time, when leakage occurs, the first inner expansion ring 4 and the second inner expansion ring 6 absorb oil and expand, increasing their volume, thereby further compressing the end cover flange and the reducer housing, sealing the gap at the oil leak point, and preventing further oil leakage. When the first inner expansion ring 4 and the second inner expansion ring 6 leak, they immediately absorb oil and expand, increasing their volume, thereby further compressing the end cover flange and the reducer housing, sealing the gap at the oil leak point, and preventing further oil leakage. After the second inner expansion ring 6 fails, the second outer expansion ring 7 and the first outer expansion ring 5 further absorb oil and expand, performing further anti-leakage work. Through multi-layer anti-leakage measures, the anti-leakage efficiency is significantly improved, and the work efficiency is increased. At the same time, the elastic ring 3 is a metal ring embedded in the ring body 1. When the end cover flange is installed, the bolts are gradually tightened. The inclined section 31 of the elastic ring 3 is compressed and deformed, generating elastic force, which in turn generates a thrust on the end cover flange. The thrust acts on the bolt, thereby increasing the friction between the bolt threads and the bolt hole 8, avoiding the problem of bolt loosening, improving the stability of the installation, avoiding leakage accidents caused by loosening, and further improving the work efficiency.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A leak-proof clamping ring for a speed reducer sealing end cover, characterized in that, The ring includes a ring body (1) and an elastic ring (3). The ring body (1) has a central hole (2) in the middle position. A first inner expansion ring (4) and a second inner expansion ring (6) are respectively embedded on the outer side of the central hole (2) on both sides of the ring body (1). A first outer expansion ring (5) and a second outer expansion ring (7) are respectively embedded on the outer side of the first inner expansion ring (4) and the outer side of the second inner expansion ring (6) on both sides of the ring body (1). An elastic ring (3) is embedded inside the ring body (1) outside the central hole (2).

2. The leak-proof clamping ring for a speed reducer sealing end cover according to claim 1, characterized in that, The elastic ring (3) includes an outer straight section (32), an inner straight section (33) and an inclined section (31), and the inclined section (31), the outer straight section (32) and the inner straight section (33) are an integral structure, and the elastic ring (3) as a whole is a bowl-shaped structure.

3. The leak-proof clamping ring for a speed reducer sealing end cover according to claim 1, characterized in that, The surface of the ring body (1) is provided with bolt holes (8), and the bolt holes (8) are located between the first inner expansion ring (4) and the first outer expansion ring (5).

4. The leak-proof clamping ring for a speed reducer sealing end cover according to claim 2, characterized in that, The inclined section (31) has a through hole (34) at the position corresponding to the bolt hole (8), and the diameter of the through hole (34) is larger than the diameter of the bolt hole (8).

5. A leak-proof clamping ring for a speed reducer sealing end cover according to claim 3, characterized in that, The bolt holes (8) correspond to the bolt mounting holes of the end cover flange, and there are multiple sets of bolt holes (8) distributed at equal angles along the central axis of the ring body (1).

6. The leak-proof clamping ring for a speed reducer sealing end cover according to claim 1, characterized in that, The ring body (1), elastic ring (3), first inner expansion ring (4), second inner expansion ring (6), first outer expansion ring (5) and second outer expansion ring (7) are arranged coaxially.

7. A leak-proof clamping ring for a speed reducer sealing end cover according to claim 1, characterized in that, The first inner expansion ring (4) and the first outer expansion ring (5) protrude from one side of the ring body (1).

8. The leak-proof clamping ring for a speed reducer sealing end cover according to claim 1, characterized in that, The second inner expansion ring (6) and the second outer expansion ring (7) protrude from the other side surface of the ring body (1).

Images