Oil seal structure for vertically installing gear shaft
By setting up an oil storage chamber and oil-swinging components in the vertical oil-sealing structure of the gear shaft, combined with the inflation channel and barrier structure, the problem of lubricating oil penetration in the vertical gear box is solved, and dynamic sealing and effective lubrication and cooling of lubricating oil are achieved.
Patent Information
- Application Number
- CN202422237218.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-12
AI Technical Summary
Lubricating oil in the vertical gear box can easily penetrate the box from the gap between the gear shaft and the bearing seat, and traditional static sealing methods cannot be effectively prevented.
A vertically installed oil seal structure of gear shaft is designed, including an oil storage chamber, an oil swing member and a dynamic sealing method. The oil swing member is used to throw the lubricant oil into the oil storage chamber when the gear shaft rotates and discharge it into the box through the oil drain hole, combining the inflation channel and the barrier structure to prevent the lubricant from seeping out.
Effectively prevent lubricating oil from leaking out of the gear box, lubrication and cooling of gears and bearings, and reduce leakage of lubricating oil through dynamic sealing.
Smart Images
Figure CN223120573U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gearboxes, and particularly relates to an oil sealing structure with a vertically installed gear shaft. Background Technique
[0002] A vertical gearbox is a type of gearbox. The most significant difference is that the gear shaft is arranged vertically. During the actual operation of the gearbox, it is necessary to spray oil for lubrication and cooling of the gear bearings in the box. However, due to the vertical arrangement of the gear shaft, the lubricating oil is extremely likely to seep out of the box along the gear shaft under the action of gravity. The traditional static sealing method (such as sealing rings) is applicable to seal gearboxes with horizontally arranged gear shafts, but it cannot effectively prevent the lubricating oil in the vertical gearbox from seeping out of the box through the gap between the gear shaft and the bearing seat. Therefore, it is necessary to design a special oil sealing structure to solve this technical problem. Content of the Utility Model
[0003] The purpose of the utility model is to provide an oil sealing structure with a vertically installed gear shaft, so as to solve the technical problem that the lubricating oil in the current vertical gearbox on the market is likely to seep out of the box through the gap between the gear shaft and the bearing seat as mentioned in the above background technique.
[0004] To achieve the above purpose, the utility model provides the following technical solution: An oil sealing structure with a vertically installed gear shaft, comprising:
[0005] A box body and a bearing seat connected to the box body, wherein a bearing for cooperating with the gear shaft is arranged in the bearing seat;
[0006] A high-speed through cover provided with a through hole, the high-speed through cover is arranged in the bearing seat and at the end far from the bearing, and the bearing seat, the bearing and the high-speed through cover jointly form an oil storage chamber for accommodating lubricating oil, and the bearing seat is provided with an oil discharge hole for communicating the oil storage chamber with the inside of the box body;
[0007] An oil throwing component arranged in the oil storage chamber, the oil throwing component is used to rotate synchronously under the drive of the gear shaft, so as to throw the lubricating oil sliding down along the gear shaft into the oil storage chamber and discharge it into the inside of the box body through the oil discharge hole.
[0008] As a preferred technical solution of the utility model, the oil throwing component is an oil throwing ring connected to the gear shaft.
[0009] As a preferred technical solution of the utility model, a barrier structure for preventing lubricating oil from entering the gap between the oil throwing ring and the high-speed through cover is arranged between the oil throwing ring and the high-speed through cover.
[0010] As a preferred technical solution of the utility model, the barrier structure includes:
[0011] A first annular groove opened at the bottom end of the oil throwing ring;
[0012] A second annular groove is opened at the upper end of the high-speed through cover, and the second annular groove is staggered from the first annular groove to form a wrinkled space that prevents lubricating oil from entering the gap between the oil slinger and the high-speed through cover.
[0013] As a preferred technical solution of the present invention, the oil sealing structure further includes an air inflation channel with one end communicating with the wrinkled space. By continuously inflating gas into the air inflation channel, the lubricating oil that penetrates into the wrinkled space is blown out of the wrinkled space and sent into the oil storage chamber.
[0014] As a preferred technical solution of the present invention, the air inflation channel includes:
[0015] A first air inlet hole opened in the bearing seat;
[0016] A second air inlet hole opened in the high-speed through cover, one end of the second air inlet hole is communicated with the first air inlet hole, and the other end of the second air inlet hole points to the wrinkled space.
[0017] As a preferred technical solution of the present invention, a sealing member is provided at the side wall of the high-speed through cover, and the sealing member is used to seal the gap between the high-speed through cover and the inside of the bearing seat.
[0018] As a preferred technical solution of the present invention, the sealing member includes an O-ring, which is arranged in an outer surface annular groove opened in the side wall of the high-speed through cover.
[0019] As a preferred technical solution of the present invention, the box body includes a left box body and a right box body, and the left box body and the right box body are assembled together to form a complete box body.
[0020] As a preferred technical solution of the present invention, the bearing seat includes:
[0021] A first bearing seat connected to the right box body;
[0022] A second bearing seat connected to the left box body, and the first bearing seat and the second bearing seat are spliced together to form a complete bearing seat.
[0023] Compared with the prior art, the beneficial effects of the present invention are:
[0024] In the present utility model, an oil slinging component is provided in the oil storage chamber. When the gear shaft rotates, it will synchronously drive the connected oil slinging component to rotate. The high-speed rotating oil slinging component contacts the lubricating oil, imparting a certain centrifugal force to the lubricating oil, thereby slinging the lubricating oil that has penetrated into the oil storage chamber onto the inner wall of the oil storage chamber. Since the inner wall of the oil storage chamber is provided with oil discharge holes, the lubricating oil flows into the interior of the box body through the oil discharge holes, and the lubricating oil is prevented from leaking out of the box body through a dynamic sealing method. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 is a front three-dimensional structural schematic diagram of the present utility model;
[0026] Figure 2 is a rear three-dimensional structural schematic diagram of the present utility model;
[0027] Figure 3 is a side-sectional structural schematic diagram of the present utility model.
[0028] In the figure: 1, box body; 2, gear shaft; 3, first bearing seat; 31, first air inlet hole; 32, oil discharge hole; 33, oil storage chamber; 4, second bearing seat; 5, bearing; 6, oil slinging ring; 61, first annular groove; 7, high-speed through cover; 71, second air inlet hole; 72, annular groove end face; 73, outer surface annular groove; 74, second annular groove; 8, O-ring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.
[0030] Please refer to Figures 1-3 , the present utility model provides a technical solution: an oil seal structure with a vertically installed gear shaft, including a box body 1 and a bearing seat connected to the box body 1. A bearing 5 for cooperating with the gear shaft 2 is provided in the bearing seat; a high-speed through cover 7 with a through hole, the high-speed through cover 7 is arranged in the bearing seat at the end far from the bearing 5. The bearing seat, the bearing 5 and the high-speed through cover 7 together form an oil storage chamber 33 for accommodating lubricating oil. The bearing seat is provided with an oil discharge hole 32 for communicating the oil storage chamber 33 with the interior of the box body 1; an oil slinging component arranged in the oil storage chamber 33, the oil slinging component is used to rotate synchronously under the drive of the gear shaft 2, so as to sling the lubricating oil sliding down along the gear shaft 2 into the oil storage chamber 33 and discharge it into the interior of the box body 1 through the oil discharge hole 32;
[0031] Adopting the above technical solution can send the lubricating oil infiltrating into the oil storage chamber 33 into the box body 1, preventing the lubricating oil from leaking out of the box body 1 from the bearing seat. When the gearbox is in use, the lubricating oil for lubricating and cooling the gears and bearings 5 will flow downward along the vertical gear shaft 2 under the action of gravity. The lubricating oil flows into the oil storage chamber 33. Since there is an oil slinging component in the oil storage chamber 33, when the gear shaft 2 rotates, it will synchronously drive the connected oil slinging component to rotate. The high-speed rotating oil slinging component contacts the lubricating oil and imparts a certain centrifugal force to the lubricating oil, thereby slinging the lubricating oil onto the inner wall of the oil storage chamber 33. Since the inner wall of the oil storage chamber 33 is provided with oil discharge holes 32, the lubricating oil flows into the interior of the box body 1 through the oil discharge holes 32, preventing the lubricating oil from leaking out of the box body 1 through a dynamic sealing method.
[0032] As Figure 3 shown, in this embodiment, the oil slinging component is an oil slinging ring 6 connected to the gear shaft 2, and there are three oil discharge holes 32;
[0033] Adopting the above technical solution can achieve slinging the lubricating oil in the oil storage chamber 33 onto the inner wall of the oil storage chamber 33. When the gear shaft 2 rotates, it will drive the connected oil slinging ring 6 to rotate synchronously, so that the lubricating oil is imparted with centrifugal force after contacting the oil slinging ring 6, and the lubricating oil splashes onto the inner wall of the oil storage chamber 33 under the action of centrifugal force.
[0034] As Figure 3 shown, in this embodiment, both the oil slinging ring 6 and the high-speed through cover 7 are of circular ring structure, and a barrier structure for preventing the lubricating oil from entering the gap between the two is provided between the oil slinging ring 6 and the high-speed through cover 7; specifically, the barrier structure includes: a first annular groove 61 opened at the bottom end of the oil slinging ring 6; a second annular groove 74 opened at the upper end of the high-speed through cover 7, and the second annular groove 74 and the first annular groove 61 are staggered from each other to form a folded space for preventing the lubricating oil from entering the gap between the oil slinging ring 6 and the high-speed through cover 7;
[0035] Adopting the above technical solution can prevent the lubricating oil in the oil storage chamber 33 from penetrating into the gap between the oil slinging ring 6 and the high-speed through cover 7. When the lubricating oil enters the gap between the oil slinging ring 6 and the high-speed through cover 7, due to the existence of the folded space, the forward route of the lubricating oil is blocked, resulting in poor oil flow, thereby effectively reducing the lubricating oil penetrating into the gap. In order to improve the blocking effect on the lubricating oil, multiple first annular grooves 61 and second annular grooves 74 can be provided to form a more complex folded space.
[0036] As Figure 1 and Figure 3As shown, in this embodiment, the oil seal structure further includes an inflation channel with one end communicating with the corrugated space. By continuously injecting gas into the inflation channel, the lubricating oil that has penetrated into the corrugated space is blown out of the corrugated space and sent into the oil storage chamber 33. Specifically, the inflation channel includes a first air inlet hole 31 opened in the bearing housing; a second air inlet hole 71 opened in the high-speed through cover 7. The second air inlet hole 71 includes two holes respectively opened in the end face 72 of the upper annular groove of the high-speed through cover 7 and the outer surface annular groove 73 in the middle of the ring of the high-speed through cover 7. These two holes communicate with each other to form an L-shaped air inlet hole. One end of the second air inlet hole 71 is communicated with the first air inlet hole 31, and the other end of the second air inlet hole 71 points to the corrugated space.
[0037] Adopting the above technical solution can flush the lubricating oil remaining in the corrugated space out of the corrugated space and enable the lubricating oil to enter the oil storage chamber 33 to participate in centrifugation. During use, by connecting the hose of an external device's air pump to the first air inlet hole 31, the air pump continuously injects high-pressure air into the first air inlet hole 31. The high-pressure gas enters the space between the first annular groove 61 of the oil slinger 6 and the second annular groove 74 of the high-speed through cover 7 through the second air inlet hole 71 of the high-speed through cover 7. Under the action of the high-pressure gas and the rotational centrifugal force, the lubricating oil between the first annular groove 61 and the second annular groove 74 is forced to be thrown onto the inner wall of the oil storage chamber 33. The lubricating oil is discharged into the housing 1 through the oil discharge holes 32 opened on the inner wall of the oil storage chamber 33, forming a dynamic seal for the lubricating oil.
[0038] As Figure 3 shown, in this embodiment, a sealing component is provided at the side wall of the high-speed through cover 7. The sealing component is used to seal the gap between the high-speed through cover 7 and the inside of the bearing housing. Specifically, the sealing component includes an O-ring 8, which is arranged in the outer surface annular groove 73 opened on the side wall of the high-speed through cover 7.
[0039] Adopting the above technical solution can prevent the lubricating oil from infiltrating into the gap between the high-speed through cover 7 and the inside of the bearing housing by setting the O-ring 8. There are three outer surface annular grooves 73 on the outer surface of the ring of the high-speed through cover 7. The upper and lower outer surface annular grooves 73 are used to install the O-ring 8, and the middle outer surface annular groove 73 is used to cooperate with the first air inlet hole 31 for air intake.
[0040] As Figure 1 and Figure 2 shown, in this embodiment, the housing 1 includes a left housing and a right housing; the bearing housing includes a first bearing housing 3 connected to the right housing; a second bearing housing 4 connected to the left housing.
[0041] Adopting the above technical solution can facilitate installation and disassembly. The left box body and the right box body can be assembled with each other into a complete box body 1 by means of bolt connection. Since the first bearing seat 3 is integral with the right box body and the second bearing seat 4 is integral with the left box body, when the left box body and the right box body are combined, the first bearing seat 3 and the second bearing seat 4 are also combined into a complete bearing seat.
[0042] As Figure 3 shown, in this embodiment, a hole retaining ring is arranged inside the bearing seat, and the hole retaining ring is attached to the bottom end of the high-speed through cover 7;
[0043] Adopting the above technical solution can fix the high-speed through cover 7. The hole retaining ring is used to cooperate with the bearing seat to form a fixing effect on the upper and lower sides of the high-speed through cover 7 to prevent the high-speed through cover 7 from moving.
[0044] Working principle: When the gearbox is in use, the lubricating oil for lubricating and cooling the gears and bearings 5 will flow downward along the vertical gear shaft 2 under the action of gravity. The lubricating oil flows into the oil storage chamber 33. Since an oil slinger 6 is arranged in the oil storage chamber 33, when the gear shaft 2 rotates, it will synchronously drive the connected oil slinger 6 to rotate. The high-speed rotating oil slinger 6 contacts the lubricating oil and imparts a certain centrifugal force to the lubricating oil, thereby slinging the lubricating oil onto the inner wall of the oil storage chamber 33. Since drain holes 32 are provided on the inner wall of the oil storage chamber 33, the lubricating oil flows into the interior of the box body 1 through the drain holes 32, preventing the lubricating oil from leaking out of the box body 1 through a dynamic sealing method. During this process, a small amount of lubricating oil will seep into the gap between the bottom end of the oil slinger 6 and the upper end of the high-speed through cover 7. Since the second annular groove 74 and the first annular groove 61 are staggered from each other to form a wrinkled space that prevents the lubricating oil from entering the gap between the oil slinger 6 and the high-speed through cover 7, the forward route of the lubricating oil is blocked, resulting in poor oil flow, thereby effectively reducing the lubricating oil that penetrates into the gap. By connecting the hose of an external air pump to the first air inlet hole 31, the air pump continuously injects high-pressure air into the first air inlet hole 31. The high-pressure gas enters the space between the first annular groove 61 of the oil slinger 6 and the second annular groove 74 of the high-speed through cover 7 through the second air inlet hole 71 of the high-speed through cover 7. Under the action of the high-pressure gas and the rotational centrifugal force, the lubricating oil between the first annular groove 61 and the second annular groove 74 is forced to be slung onto the inner wall of the oil storage chamber 33, and the lubricating oil is discharged into the box body 1 through the drain holes 32 provided on the inner wall of the oil storage chamber 33, forming a dynamic seal for the lubricating oil and eliminating the possibility of the lubricating oil leaking out of the box body 1.
[0045] Thus, a series of operations are completed. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.
[0046] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.
Claims
1. A vertically installed oil seal structure for a gear shaft, comprising: a housing (1) and a bearing seat connected to the housing (1), wherein a bearing (5) for mating with the gear shaft (2) is provided in the bearing seat; characterized in that the oil seal structure further comprises: a high-speed through cover (7) having a through hole, the high-speed through cover (7) being disposed in the bearing seat at an end away from the bearing (5), and the bearing seat, the bearing (5) and the high-speed through cover (7) jointly form an oil storage chamber (33) for containing lubricating oil, and the bearing seat is provided with an oil drain hole (32) for communicating the oil storage chamber (33) with the interior of the housing (1); an oil throwing member disposed in the oil storage chamber (33), the oil throwing member being used for synchronously rotating under the drive of the gear shaft (2), so as to throw the lubricating oil sliding down along the gear shaft (2) into the oil storage chamber (33) and drain it into the interior of the housing (1) through the oil drain hole (32).
2. The vertical installation oil seal structure of the gear shaft according to claim 1, characterized in that The oil throwing member is an oil throwing ring (6) connected to the gear shaft (2).
3. The vertical installation oil seal structure of the gear shaft according to claim 2, characterized in that, A barrier structure for preventing lubricating oil from entering the gap between the oil throwing ring (6) and the high-speed through cover (7) is provided between the oil throwing ring (6) and the high-speed through cover (7).
4. The vertical installation oil seal structure of the gear shaft according to claim 3, characterized in that, The barrier structure comprises: a first annular groove (61) opened at the bottom end of the oil throwing ring (6); a second annular groove (74) opened at the upper end of the high-speed through cover (7), and the second annular groove (74) and the first annular groove (61) are staggered from each other to form a folded space for preventing lubricating oil from entering the gap between the oil throwing ring (6) and the high-speed through cover (7).
5. The oil seal structure with a vertically installed gear shaft according to claim 4, characterized in that, The oil seal structure further comprises an air inflation channel having one end communicating with the folded space, and by continuously inflating gas into the air inflation channel, the lubricating oil penetrating into the folded space is blown out of the folded space and sent into the oil storage chamber (33).
6. The vertical installation oil seal structure of a gear shaft according to claim 5, wherein The air inflation channel comprises: a first air inlet hole (31) opened in the bearing seat; a second air inlet hole (71) opened in the high-speed through cover (7), one end of the second air inlet hole (71) is communicated with the first air inlet hole (31), and the other end of the second air inlet hole (71) points to the folded space.
7. The vertical installation oil seal structure of the gear shaft according to claim 1, characterized in that, A sealing member is provided at the side wall of the high-speed through cover (7), and the sealing member is used for sealing the gap between the high-speed through cover (7) and the interior of the bearing seat.
8. The vertically-mounted oil seal structure for a gear shaft according to claim 7, characterized in that, The sealing member comprises an O-ring (8), which is disposed in an outer surface annular groove (73) opened on the side wall of the high-speed through cover (7).
9. The vertical installation oil seal structure of a gear shaft according to claim 8, characterized in that, The housing (1) comprises a left housing and a right housing, and the left housing and the right housing are assembled together to form a complete housing (1).
10. The vertical installation oil seal structure of a gear shaft according to claim 9, characterized in that, The bearing seat comprises: a first bearing seat (3) connected to the right housing; a second bearing seat (4) connected to the left housing, and the first bearing seat (3) and the second bearing seat (4) are spliced together to form a complete bearing seat.