Oil leakage prevention assembly with high sealing performance

Abstract

The utility model discloses an oil leakage prevention assembly with high sealing performance, which relates to the technical field of gear speed reducers and comprises a speed reducer and an oil leakage prevention sealing device. The rear side of the speed reducer is fixedly connected with a sealing sleeve, and a transmission shaft is installed in the sealing sleeve. The oil leakage prevention sealing device comprises a sealing ring, an annular pressing block, four guide rods, four sleeve springs and four limiting chucks, the sealing ring is slidably installed in the sealing sleeve, the sealing ring is slidably connected to the surface of the transmission shaft in a sleeving mode, an annular pressing groove is formed in the surface of the sealing ring, and the annular pressing block is slidably installed in the sealing sleeve; the surface of the annular pressing block makes contact with the inner wall of the annular pressing groove, the four guide rods are circularly connected into the annular pressing block at equal intervals in a sliding mode, the four sleeve springs of the annular pressing block can push the annular pressing block to slide backwards to be extruded on the inner wall of the annular pressing groove, and then the sealing ring can be extruded on the surface of the transmission shaft all the time to eliminate gaps. And the lubricating oil cannot flow out from the gap to cause leakage.

Description

Technical Field

[0001] The utility model relates to the technical field of gear reducers, in particular to an anti-oil leakage component with strong sealing performance. Background Art

[0002] A reducer is a power transmission mechanism that uses a gear speed converter to reduce the number of revolutions of a motor to the required number of revolutions and obtain a larger torque. Among the mechanisms currently used to transmit power and motion, reducers are widely used in metallurgy, mining, lifting, transportation, cement, construction, chemical industry, textile, printing and dyeing, pharmaceuticals and other fields. Existing gear reducers need to be lubricated when in use, but the parts that need to be lubricated in the transmission mechanism are in contact with the output shaft, which often causes lubricating oil leakage.

[0003] The currently published patent: CN214999259U, discloses a lightweight gear reducer. By putting a collar on the shaft sleeve, further passing the clamping block and the connecting rod into the vertical groove, after the clamping block reaches the inner wall of the vertical groove, the collar is rotated clockwise to make the connecting rod slide along the inner surface of the curved groove, and at the same time the clamping block slides along the inner surface of the slide groove. When the connecting rod rotates to abut against the inner wall of the curved groove, the collar can be clamped. By setting up the anti-oil leakage mechanism, the leakage of lubricating oil between the shaft sleeve and the reducer body is avoided, thereby further improving the working efficiency of the reducer and extending the service life of the reducer.

[0004] Based on the above search, it was found that the above patent has the following problems when used: the thin and light gear reducer achieves the effect of preventing oil leakage through the sealing effect of the shaft sleeve, collar and sealing ring, but the shaft is constantly rotating, and the rotation of the shaft will cause the shaft sleeve, collar and sealing ring to wear. Due to gaps caused by long-term wear, lubricating oil can easily flow out of the gaps and cause leakage, affecting the oil leakage prevention effect of the reducer. Utility Model Content

[0005] The purpose of the present utility model is to solve at least one of the technical problems existing in the prior art and to provide an anti-leakage oil component with strong sealing performance, which can solve the problem that the rotation of the shaft will cause the shaft sleeve, the collar and the sealing ring to wear, and the gaps will be generated after long-term wear, and the lubricating oil is likely to flow out from the gaps and cause leakage, thereby affecting the anti-leakage oil effect of the reducer.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-oil leakage component with strong sealing performance, comprising a reducer and an anti-oil leakage sealing device; a sealing sleeve is fixedly connected to the rear side of the reducer, and a transmission shaft is installed inside the sealing sleeve; the anti-oil leakage sealing device comprises a sealing ring, an annular pressure block, four guide rods, four sleeve springs and four limit chucks, the sealing ring is slidably installed inside the sealing sleeve, the sealing ring is slidably sleeved on the surface of the transmission shaft, the surface of the sealing ring is provided with an annular pressure groove, the annular pressure block is slidably installed inside the sealing sleeve, the surface of the annular pressure block contacts the inner wall of the annular pressure groove, the four guide rods are circularly and equidistantly slidably connected to the inside of the annular pressure block, the front ends of the four guide rods are fixedly connected to the inner wall of the sealing sleeve, the four sleeve springs are respectively slidably sleeved on the surfaces of the four guide rods, the front end of the sleeve spring is fixedly connected to the inner wall of the sealing sleeve, the rear end of the sleeve spring is fixedly connected to the surface of the annular pressure block, and the inside of the annular pressure block is circularly and equidistantly provided with four circular slide grooves.

[0007] Preferably, the four limiting chucks are respectively slidably connected to the inside of the four circular sliding grooves, and the four limiting chucks are respectively fixedly connected to the rear ends of the four guide rods.

[0008] Preferably, a mounting ring is slidably mounted inside the sealing sleeve, and the mounting ring is slidably sleeved on the surface of the transmission shaft.

[0009] Preferably, the surface of the sealing sleeve is circular and is equidistantly mounted with four bolts, and the four bolts are all threadedly connected to the inside of the mounting ring.

[0010] Preferably, an annular groove is provided on the surface of the mounting ring, and a rubber sealing ring is installed inside the annular groove.

[0011] Preferably, an annular groove is provided on the inner wall of the sealing sleeve, and the surface of the rubber sealing ring contacts the inner wall of the annular groove.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. This oil leakage prevention component with strong sealing performance has a sealing ring that is squeezed and deformed by the annular pressure block and squeezed on the surface of the transmission shaft, thereby sealing the surface of the transmission shaft to prevent the lubricating oil from flowing out along the surface of the transmission shaft. Even if the transmission shaft rotates and produces friction with the surface of the sealing ring to produce a gap, the four sleeve springs of the annular pressure block can still push the annular pressure block to slide backward and be squeezed on the inner wall of the annular pressure groove, so that the sealing ring can always be squeezed on the surface of the transmission shaft to eliminate the gap. At this time, the lubricating oil cannot flow out from the gap to cause leakage, thereby improving the oil leakage prevention effect of the reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic diagram of the overall structure of an oil leakage prevention component with strong sealing performance in the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the sealing sleeve of the utility model;

[0017] Figure 3 This is a schematic diagram of the surface structure of the sealing ring of the utility model;

[0018] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure of A in the middle.

[0019] Figure numerals: 1, reducer; 2, sealing sleeve; 3, transmission shaft; 4, sealing ring; 5, annular pressure groove; 6, annular pressure block; 7, guide rod; 8, sleeve spring; 9, circular slide groove; 10, limit chuck; 11, mounting ring; 12, bolt; 13, annular groove; 14, rubber sealing ring; 15, annular groove. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0022] In the description of this utility model, terms such as "greater than," "less than," and "exceed" are understood to exclude the number indicated, while terms such as "above," "below," and "within" are understood to include the number indicated. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] See also Figure 1-4The utility model provides a technical solution: an anti-leakage oil component with strong sealing performance, including a reducer 1 and an anti-leakage oil sealing device, the rear side of the reducer 1 is fixedly connected with a sealing sleeve 2, a transmission shaft 3 is installed inside the sealing sleeve 2, and the anti-leakage oil sealing device includes a sealing ring 4, an annular pressure block 6, four guide rods 7, four sleeve springs 8 and four limit chucks 10, the sealing ring 4 is slidably installed inside the sealing sleeve 2, the sealing ring 4 is slidably sleeved on the surface of the transmission shaft 3, the surface of the sealing ring 4 is provided with an annular pressure groove 5, the annular pressure block 6 is slidably installed inside the sealing sleeve 2, and the surface of the annular pressure block 6 is connected to the ring pressure groove 5. The inner walls of the annular pressure groove 5 are in contact with each other, and the four guide rods 7 are slidably connected to the inside of the annular pressure block 6 in a circular shape and at equal intervals. The front ends of the four guide rods 7 are fixedly connected to the inner wall of the sealing sleeve 2, and the four sleeve springs 8 are respectively slidably sleeved on the surfaces of the four guide rods 7. The front end of the sleeve spring 8 is fixedly connected to the inner wall of the sealing sleeve 2, and the rear end of the sleeve spring 8 is fixedly connected to the surface of the annular pressure block 6. The inside of the annular pressure block 6 is provided with four circular chute 9 in a circular shape and at equal intervals. The four limit chucks 10 are respectively slidably connected to the inside of the four circular chute 9, and the four limit chucks 10 are respectively fixedly connected to the rear ends of the four guide rods 7.

[0025] When the oil leakage prevention component with strong sealing performance is in use, the transmission shaft 3 rotates inside the sealing sleeve 2. At the same time, the four sleeve springs 8 are in a compressed state. The four sleeve springs 8 release their elastic force and drag the annular pressure block 6 to slide backward. The annular pressure block 6 slides on the surface of the four guide rods 7. The four guide rods 7 can ensure that the annular pressure block 6 slides horizontally to the rear side, and the four limiting chucks 10 limit the annular pressure block 6 to prevent the annular pressure block 6 from moving out of the interior of the sealing sleeve 2. The annular pressure block 6 slides backward and squeezes the inner wall of the annular pressure groove 5. At this time, the sealing ring 4 is The extrusion effect of the annular pressure block 6 causes the annular pressure block 6 to deform and squeeze the surface of the transmission shaft 3, thereby sealing the surface of the transmission shaft 3 to prevent the lubricating oil from flowing out along the surface of the transmission shaft 3. Even if the transmission shaft 3 rotates and produces friction with the surface of the sealing ring 4 to produce a gap, the four sleeve springs 8 of the annular pressure block 6 can still push the annular pressure block 6 to slide backward and be squeezed on the inner wall of the annular pressure groove 5, so that the sealing ring 4 can always be squeezed on the surface of the transmission shaft 3 to eliminate the gap. At this time, the lubricating oil cannot flow out from the gap to cause leakage, thereby improving the oil leakage prevention effect of the reducer.

[0026] A mounting ring 11 is slidably installed inside the sealing sleeve 2, and the mounting ring 11 is slidably sleeved on the surface of the transmission shaft 3. The surface of the sealing sleeve 2 is circular and equidistantly installed with four bolts 12. The four bolts 12 are all threadedly connected to the inside of the mounting ring 11. An annular groove 13 is provided on the surface of the mounting ring 11, and a rubber sealing ring 14 is installed inside the annular groove 13. An annular groove 15 is provided on the inner wall of the sealing sleeve 2, and the surface of the rubber sealing ring 14 is in contact with the inner wall of the annular groove 15.

[0027] After the staff puts the sealing ring 4 into the sealing sleeve 2, they slide the installation ring 11 into the sealing sleeve 2 again and fix the installation ring 11 by rotating the four bolts 12 with a wrench. During the process of sliding the installation ring 11 into the sealing sleeve 2, the rubber sealing ring 14 is driven to slide into the annular groove 15, and then the connection position between the installation ring 11 and the sealing sleeve 2 is sealed by the extrusion effect between the rubber sealing ring 14 and the annular groove 15, thereby achieving a secondary sealing effect and improving the sealing performance of the oil leakage prevention component.

[0028] Working principle: This oil leakage prevention component has strong sealing performance. The transmission shaft 3 rotates inside the sealing sleeve 2. At the same time, the four sleeve springs 8 release the elastic force and drag the annular pressure block 6 to slide backward. The annular pressure block 6 slides on the rear side of the surface of the four guide rods 7. The four guide rods 7 can ensure that the annular pressure block 6 slides horizontally to the rear side, and the annular pressure block 6 is limited by four limiting chucks 10. The annular pressure block 6 slides to the rear side and squeezes the inner wall of the annular pressure groove 5. At this time, the sealing ring 4 is squeezed and deformed by the squeezing effect of the annular pressure block 6 and squeezed on the surface of the transmission shaft 3 to seal, preventing the lubricating oil from flowing out along the surface of the transmission shaft 3. Even if the transmission shaft 3 rotates, it will produce friction with the surface of the sealing ring 4 to produce a gap. When the annular pressure block 6 is in the process of sliding, the four sleeve springs 8 of the annular pressure block 6 can still push the annular pressure block 6 to slide backward and squeeze on the inner wall of the annular pressure groove 5, so that the sealing ring 4 can always be squeezed on the surface of the transmission shaft 3 to eliminate the gap. At this time, the lubricating oil cannot flow out from the gap to cause leakage. The staff installs the circular ring 11 and slides it into the interior of the sealing sleeve 2, and fixes the installation circular ring 11 by rotating the four bolts 12 with a wrench. During the process of sliding the installation circular ring 11 into the interior of the sealing sleeve 2, the rubber sealing ring 14 is driven to slide and be stuck in the interior of the annular groove 15, and then the connection position of the installation circular ring 11 and the sealing sleeve 2 is sealed by the extrusion between the rubber sealing ring 14 and the annular groove 15.

[0029] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An oil leakage prevention component with strong sealing performance, characterized in that: include: A reducer (1) and an oil leakage-proof sealing device; A sealing sleeve (2) is fixedly connected to the rear side of the reducer (1), and a transmission shaft (3) is installed inside the sealing sleeve (2); The oil leakage prevention sealing device comprises a sealing ring (4), an annular pressure block (6), four guide rods (7), four sleeve springs (8) and four limit chucks (10). The sealing ring (4) is slidably mounted inside the sealing sleeve (2), the sealing ring (4) is slidably sleeved on the surface of the transmission shaft (3), an annular pressure groove (5) is provided on the surface of the sealing ring (4), the annular pressure block (6) is slidably mounted inside the sealing sleeve (2), the surface of the annular pressure block (6) contacts the inner wall of the annular pressure groove (5), the four guide rods (7) are equidistantly slidably connected inside the annular pressure block (6), the front ends of the four guide rods (7) are fixedly connected to the inner wall of the sealing sleeve (2), the four sleeve springs (8) are respectively slidably sleeved on the surfaces of the four guide rods (7), the front ends of the sleeve springs (8) are fixedly connected to the inner wall of the sealing sleeve (2), the rear ends of the sleeve springs (8) are fixedly connected to the surface of the annular pressure block (6), and the interior of the annular pressure block (6) is equidistantly provided with four circular sliding grooves (9).

2. The oil leakage prevention component with strong sealing performance according to claim 1, characterized in that: The four limiting chucks (10) are respectively slidably connected to the inside of the four circular slide grooves (9), and the four limiting chucks (10) are respectively fixedly connected to the rear ends of the four guide rods (7).

3. The oil leakage prevention component with strong sealing performance according to claim 1, characterized in that: A mounting ring (11) is slidably mounted inside the sealing sleeve (2), and the mounting ring (11) is slidably sleeved on the surface of the transmission shaft (3).

4. The oil leakage prevention component with strong sealing performance according to claim 3, characterized in that: The surface of the sealing sleeve (2) is circular and equidistantly mounted with four bolts (12), and the four bolts (12) are all threadedly connected to the inside of the mounting ring (11).

5. The oil leakage prevention component with strong sealing performance according to claim 3, characterized in that: An annular groove (13) is provided on the surface of the mounting ring (11), and a rubber sealing ring (14) is installed inside the annular groove (13).

6. The oil leakage prevention component with strong sealing performance according to claim 5, characterized in that: An annular groove (15) is provided on the inner wall of the sealing sleeve (2), and the surface of the rubber sealing ring (14) contacts the inner wall of the annular groove (15).

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