Improved seal for high speed shaft of a horizontal rolling reduction gear

Abstract

The utility model discloses a kind of flat rolling speed reducer high-speed shaft sealing improvement structure, including speed reducer main body, the one side of speed reducer main body is fixedly connected with connecting seat, connecting seat one side is fixedly connected with fixed sleeve, fixed sleeve outer surface is fixedly connected with sealing mechanism, sleeve inner wall is inserted with sleeve, sleeve inner wall is rotatably connected with main shaft, connecting seat bottom is fixedly connected with oil collecting mechanism, and extrusion groove is set in sleeve inner wall, sealing ring is fixedly connected in fixed sleeve inner wall, support is fixedly connected in fixed sleeve outer surface, cam is rotatably connected in support inner wall both sides, wrench is fixedly connected in cam both sides, and oil-throwing disc sleeve is connected in main shaft outer wall, oil guide groove is set in connecting seat inner wall, and hole is set in oil guide groove close to bottom. The utility model can be quickly disassembled to facilitate later maintenance, while being connected with sealing mechanism to improve work efficiency, part of oil can be filtered and collected.

Description

Technical Field

[0001] This utility model relates to the field of adsorption treatment technology, and in particular to an improved structure for the high-speed shaft seal of a flat rolling mill reducer. Background Technology

[0002] In existing technology, the flat-roll reducer is a mechanical device used to reduce input speed and increase output torque, and it is widely used in various transmission systems. It can effectively amplify torque, change the direction of motion, and improve operating efficiency in specific applications.

[0003] A search revealed a utility model patent with Chinese patent publication number CN219221069U, which discloses a large bearing bush support for a high-speed shaft bearing housing seal. The seal includes a reducer, a gearbox, and a top cover sealed to the top of the gearbox. A high-speed shaft mounting hole is formed at the connection between the gearbox and the top cover. A high-speed shaft is rotatably connected to the inner wall of the mounting hole. An oil seal bearing is rotatably connected between the outer wall of the high-speed shaft and the mounting hole. A sealing assembly, including an oil baffle ring, is fixedly installed on the outer wall of the high-speed shaft. This utility model, by setting an oil baffle ring on the outer wall of the high-speed shaft, allows the oil baffle ring to experience centrifugal force during rotation. This centrifugal force causes lubricating oil splashed onto the surface of the oil baffle ring to be quickly thrown away, thus improving the oil leakage prevention effect. Although the large bearing bush support high-speed shaft bearing box seal in the above-mentioned utility model achieves sealing through the cooperation of structures such as oil baffle ring and piston ring, it involves the sequential installation and positioning of multiple components, such as piston ring, oil baffle ring, and limit retaining ring. The operation is too complicated. If internal impurities are to be cleaned, more components need to be disassembled, making maintenance difficult. At the same time, the centrifugal force of the oil baffle ring is used to throw the lubricating oil back to the gearbox. As the reducer runs, the components will gradually wear down, producing impurities such as metal shavings. These impurities will mix into the oil and then be thrown back to the gearbox. The impurity particles will aggravate the wear between the components. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an improved structure for the high-speed shaft seal of a flat rolling mill reducer.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An improved high-speed shaft seal structure for a flat rolling mill reducer includes a reducer body, a connecting seat fixedly connected to one side of the reducer body, a fixing sleeve fixedly connected to one side of the connecting seat, a sealing mechanism fixedly connected to the outer surface of the fixing sleeve, and an oil collecting mechanism fixedly connected to the bottom of the connecting seat.

[0007] As a further improvement of this utility model: a sleeve is inserted into the inner wall of the fixed sleeve, and a main shaft is rotatably connected to the inner wall of the sleeve.

[0008] As a further embodiment of this utility model: the sealing mechanism includes an extrusion groove, a sealing ring, a wrench, a cam, and a bracket, and the extrusion groove is formed on the inner wall of the sleeve.

[0009] As a further embodiment of this utility model: the sealing ring is fixedly connected to the inner wall of the fixed sleeve, and the bracket is fixedly connected to the outer surface of the fixed sleeve.

[0010] As a further embodiment of this utility model: the cam is rotatably connected to both sides of the inner wall of the bracket, and the wrench is fixedly connected to both sides of the cam.

[0011] As a further embodiment of this utility model: the oil collection mechanism includes an oil slinger, an oil guide groove, a filter plate, and an oil collection box, and the oil slinger is sleeved on the outer wall of the main shaft.

[0012] As a further embodiment of this utility model: the oil guide groove is opened on the inner wall of the connecting seat, and the oil guide groove has a hole near the bottom, the oil collection box is fixedly connected to the inner wall of the hole, and the filter plate is fixedly connected to the inner wall of the oil collection box.

[0013] Compared with the prior art, this utility model provides an improved structure for the high-speed shaft seal of a flat rolling mill reducer, which has the following beneficial effects:

[0014] 1. This improved high-speed shaft seal structure for a flat rolling mill reducer involves first inserting the sleeve and the rotating main shaft into the fixed sleeve when the reducer body is in use. Then, the sleeve and fixed sleeve are fixed and sealed using a sealing mechanism. Next, the drive source is connected to the main shaft, which then rotates within the sleeve. During rotation, the lubricating oil inside the reducer body comes into contact with the main shaft. The lubricating oil is then collected and ejected by an oil collection mechanism. This effectively prevents lubricating oil leakage from the reducer body, avoiding problems such as insufficient lubrication, increased equipment wear, and environmental pollution caused by oil leakage. It improves the reliability and stability of the reducer, and the oil collection mechanism extends the service life of the lubricating oil, reduces oil waste and replenishment frequency, thereby lowering operating costs.

[0015] 2. This improved high-speed shaft seal structure for a flat rolling mill reducer involves aligning the extrusion groove with the cam when connecting the main shaft. The sleeve is then inserted into the inner wall of the fixed sleeve until it contacts the sealing ring. The sleeve is then rotated, and a wrench is applied to rotate the cam on both sides of the inner wall of the bracket, extruding the outer edge of the extrusion groove. This further strengthens the contact tightness between the sleeve and the sealing ring, achieving a reliable seal. This effectively prevents lubricating oil leakage, ensures the normal and stable operation of the reducer, reduces maintenance costs and environmental pollution caused by oil leakage, and is simple to operate, enabling quick installation and disassembly of the main shaft and sealing mechanism.

[0016] 3. This improved high-speed shaft seal structure for a flat rolling mill reducer, when the main shaft rotates, drives the oil slinger plate sleeved on its outer wall to rotate synchronously. The lubricating oil in the reducer body will splash onto the oil slinger plate due to the agitation of gears and other components. Under the action of centrifugal force, the oil on the oil slinger plate is thrown out tangentially. The thrown-out oil falls into the oil guide groove opened in the inner wall of the connecting seat. The oil flows downward along the oil guide groove and enters the oil collection box through the holes. During this process, the oil will pass through the filter plate fixed on the inner wall of the oil collection box. The filter plate filters the oil and intercepts impurities, so that the filtered oil is collected in the oil collection box. Thus, the oil is filtered and collected, improving the cleanliness of the oil and preventing impurities in the oil from aggravating the wear of components.

[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0018] Figure 1 This is a front view of an improved high-speed shaft seal structure for a flat rolling mill reducer proposed in this utility model;

[0019] Figure 2 This is an exploded view of the sealing mechanism in the improved high-speed shaft seal structure of a flat rolling mill reducer proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the sealing mechanism in the improved high-speed shaft seal structure of a flat rolling mill reducer proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the oil collection mechanism in the improved high-speed shaft seal structure of a flat rolling mill reducer proposed in this utility model;

[0022] Figure 5 This is an exploded view of the oil collection mechanism in the improved high-speed shaft seal structure of a flat-rolling reducer proposed in this utility model.

[0023] In the diagram: 1. Main shaft; 2. Sleeve; 3. Reducer body; 4. Connecting seat; 5. Sealing mechanism; 6. Fixing sleeve; 7. Oil collection mechanism; 501. Extrusion groove; 502. Sealing ring; 503. Wrench; 504. Cam; 505. Bracket; 701. Oil slinger; 702. Oil guide groove; 703. Filter plate; 704. Oil collection box. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] An improved structure for the high-speed shaft seal of a flat rolling mill reducer, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the device includes a reducer body 3, a connecting seat 4 fixedly connected to one side of the reducer body 3, a fixing sleeve 6 fixedly connected to one side of the connecting seat 4, a sealing mechanism 5 fixedly connected to the outer surface of the fixing sleeve 6, a sleeve 2 inserted into the inner wall of the fixing sleeve 6, a main shaft 1 rotatably connected to the inner wall of the sleeve 2, and an oil collecting mechanism 7 fixedly connected to the bottom of the connecting seat 4.

[0028] When the reducer body 3 is needed, first insert the sleeve 2 and the main shaft 1 rotatably connected to the sleeve 2 into the fixed sleeve 6, and then fix the sleeve 2 and the fixed sleeve 6 through the sealing mechanism 5 to form a seal.

[0029] The drive source is then connected to the main shaft 1. The drive source then drives the main shaft 1 to rotate inside the sleeve 2. When the main shaft 1 rotates, the lubricating oil in the reducer body 3 comes into contact with the main shaft 1. Then, the lubricating oil is thrown out and collected by the oil collection mechanism 7. This effectively prevents the lubricating oil from leaking into the reducer body 3, avoiding problems such as insufficient lubrication, accelerated equipment wear, and environmental pollution caused by oil leakage. This improves the reliability and stability of the reducer. At the same time, the oil collection mechanism 7 can extend the service life of the lubricating oil, reduce oil waste and replenishment frequency, and thus reduce operating costs.

[0030] To prevent lubricating oil leakage, such as Figure 2 and Figure 3 As shown, the sealing mechanism 5 includes a compression groove 501, a sealing ring 502, a wrench 503, a cam 504, and a bracket 505. The compression groove 501 is formed on the inner wall of the sleeve 2, the sealing ring 502 is fixedly connected to the inner wall of the fixed sleeve 6, the bracket 505 is fixedly connected to the outer surface of the fixed sleeve 6, the cam 504 is rotatably connected to both sides of the inner wall of the bracket 505, and the wrench 503 is fixedly connected to both sides of the cam 504.

[0031] When it is necessary to connect the main shaft 1, align the extrusion groove 501 with the cam 504, then insert the sleeve 2 into the inner wall of the fixing sleeve 6 until the sleeve 2 contacts the sealing ring 502. Then rotate the sleeve 2 and turn the wrench 503 to make the cam 504 rotate on both sides of the inner wall of the bracket 505 and squeeze the outer extension of the extrusion groove 501, further strengthening the contact tightness between the sleeve 2 and the sealing ring 502, and achieving a reliable seal. This can effectively prevent lubricating oil leakage, ensure the normal and stable operation of the reducer, reduce maintenance costs and environmental pollution caused by oil leakage, and the operation is simple, enabling quick installation and disassembly of the main shaft 1 and the sealing mechanism 5.

[0032] To reduce oil waste, such as Figure 4 and Figure 5 As shown, the oil collection mechanism 7 includes an oil slinger 701, an oil guide groove 702, a filter plate 703, and an oil collection box 704. The oil slinger 701 is sleeved on the outer wall of the main shaft 1, the oil guide groove 702 is opened on the inner wall of the connecting seat 4, and the oil guide groove 702 has a hole near the bottom. The oil collection box 704 is fixedly connected to the inner wall of the hole, and the filter plate 703 is fixedly connected to the inner wall of the oil collection box 704.

[0033] When the main shaft 1 rotates, it drives the oil slinger 701 sleeved on its outer wall to rotate synchronously. The lubricating oil in the reducer body 3 will splash onto the oil slinger 701 due to the agitation of gears and other components. Under the action of centrifugal force, the oil on the oil slinger 701 is thrown out in the tangential direction.

[0034] The splashed oil falls into the oil guide groove 702 opened in the inner wall of the connecting seat 4. The oil flows downward along the oil guide groove 702 and enters the oil collection box 704 through the holes. During this process, the oil passes through the filter plate 703 fixed in the inner wall of the oil collection box 704. The filter plate 703 filters the oil and intercepts the impurities, so that the filtered oil is collected in the oil collection box 704. Thus, the oil is filtered and collected, improving the cleanliness of the oil and preventing impurities in the oil from aggravating the wear of the parts.

[0035] Working principle: When the reducer body 3 is needed, first insert the sleeve 2 and the main shaft 1 rotatably connected to the sleeve 2 into the fixed sleeve 6, and then fix the sleeve 2 and the fixed sleeve 6 through the sealing mechanism 5 to form a seal.

[0036] The drive source is then connected to the main shaft 1. The drive source then drives the main shaft 1 to rotate on the inner wall of the sleeve 2. When the main shaft 1 rotates, the lubricating oil in the reducer body 3 will come into contact with the main shaft 1. Then, the lubricating oil is thrown out and collected by the oil collection mechanism 7.

[0037] When it is necessary to connect the main shaft 1, align the extrusion groove 501 with the cam 504, then insert the sleeve 2 into the inner wall of the fixed sleeve 6 until the sleeve 2 contacts the sealing ring 502. Then rotate the sleeve 2 and turn the wrench 503 to make the cam 504 rotate on both sides of the inner wall of the bracket 505 and squeeze the outer extension of the extrusion groove 501, further strengthening the contact tightness between the sleeve 2 and the sealing ring 502, and achieving a reliable seal.

[0038] When the main shaft 1 rotates, it drives the oil slinger 701 sleeved on its outer wall to rotate synchronously. The lubricating oil in the reducer body 3 will splash onto the oil slinger 701 due to the agitation of gears and other components. Under the action of centrifugal force, the oil on the oil slinger 701 is thrown out in the tangential direction.

[0039] The splashed oil falls into the oil guide groove 702 opened in the inner wall of the connecting seat 4. The oil flows downward along the oil guide groove 702 and enters the oil collection box 704 through the hole. During this process, the oil will pass through the filter plate 703 fixed in the inner wall of the oil collection box 704. The filter plate 703 filters the oil and intercepts the impurities, so that the filtered oil is collected in the oil collection box 704.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An improved structure for the high-speed shaft seal of a flat rolling mill reducer, comprising a reducer body (3), characterized in that, A connecting seat (4) is fixedly connected to one side of the main body (3) of the reducer, a fixing sleeve (6) is fixedly connected to one side of the connecting seat (4), a sealing mechanism (5) is fixedly connected to the outer surface of the fixing sleeve (6), and an oil collecting mechanism (7) is fixedly connected to the bottom of the connecting seat (4). The sealing mechanism (5) includes a compression groove (501), a sealing ring (502), a wrench (503), a cam (504), and a bracket (505). The compression groove (501) is opened on the inner wall of the sleeve (2), the sealing ring (502) is fixedly connected to the inner wall of the fixed sleeve (6), the bracket (505) is fixedly connected to the outer surface of the fixed sleeve (6), the cam (504) is rotatably connected to both sides of the inner wall of the bracket (505), and the wrench (503) is fixedly connected to both sides of the cam (504).

2. The improved structure for high-speed shaft sealing of a flat rolling mill reducer according to claim 1, characterized in that, A sleeve (2) is inserted into the inner wall of the fixed sleeve (6), and a main shaft (1) is rotatably connected to the inner wall of the sleeve (2).

3. The improved high-speed shaft seal structure for a flat rolling mill reducer according to claim 1, characterized in that, The oil collection mechanism (7) includes an oil slinger (701), an oil guide groove (702), a filter plate (703) and an oil collection box (704), and the oil slinger (701) is sleeved on the outer wall of the main shaft (1).

4. The improved high-speed shaft seal structure for a flat rolling mill reducer according to claim 3, characterized in that, The oil guide groove (702) is opened on the inner wall of the connecting seat (4), and the oil guide groove (702) has a hole near the bottom. The oil collection box (704) is fixedly connected to the inner wall of the hole, and the filter plate (703) is fixedly connected to the inner wall of the oil collection box (704).

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