Universal speed reducer ventilation labyrinth structure
By designing a multi-layered labyrinth structure, the problems of complex ventilation labyrinth structure and insufficient anti-interference ability of the reducer were solved, and ventilation capacity and air pressure balance were achieved in complex environments.
Patent Information
- Application Number
- CN202423300399.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The existing reducer has a complex ventilation labyrinth structure design and insufficient anti-interference ability, making it difficult to achieve a simple and reliable ventilation effect.
Design a ventilated maze with a multi-layered maze structure. By combining different tapered and curved surfaces, a symmetrical four-layer maze cavity is formed. A connecting groove is opened at the lowest horizontal point of each cavity to enhance the flow path and adapt to different inclination angles and slopes.
It achieves a multi-cavity ventilation labyrinth structure with good backflow capability, can maintain ventilation capability in steep slopes and complex environments, reduces lubricant loss, and maintains dynamic balance of air pressure inside and outside the gearbox.
Smart Images
Figure CN223459852U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of gearbox reducer, especially relates to a general reducer ventilation labyrinth structure. BACKGROUND
[0002] The ventilation structure of the automobile reducer is a key component for ensuring the normal operation of the reducer, and generally, adding a labyrinth structure in the reducer box is a common implementation mode.
[0003] However, the selection of the labyrinth structure position is greatly affected by the lubrication state and other components, and the ventilation capacity is closely related to the internal structure of the labyrinth, therefore, there is currently a lack of a simple, reliable and strong anti-interference reducer ventilation labyrinth structure. SUMMARY
[0004] In view of the deficiencies in the prior art, the utility model provides a general reducer ventilation labyrinth structure to solve the technical problem of lacking a simple, reliable and strong anti-interference reducer ventilation labyrinth structure in the related art.
[0005] The utility model provides a general reducer ventilation labyrinth structure, which comprises a box body, a labyrinth structure is arranged in the box body, and a ventilation valve is arranged on the outer part of the box body, and the ventilation valve and the labyrinth structure are communicated through a ventilation groove formed on the box body.
[0006] The labyrinth structure comprises a first shell, a second shell, a third shell and a fourth shell, the first shell is connected to the box body, the peripheral side of the first shell is in the shape of a circular arc, the bottom of the first shell is in the shape of a cone and is provided with a first communication groove, the second shell is in the shape of an inverted cone and is connected to the inner peripheral side of the first shell at both ends, the second shell is provided with a second communication groove, and the second shell divides the first shell into a first cavity and a second cavity, the third shell is in the shape of an inverted cone and is connected to the box body at both ends and arranged in the second cavity to form a third cavity, the bottom of the third shell is in the shape of a circular arc and is provided with a third communication groove, and the fourth shell is in the shape of an inverted cone, both ends of the fourth shell are arranged on both sides of the ventilation groove and in the third cavity to form a fourth cavity, and the fourth shell is provided with a fourth communication groove.
[0007] Optionally, the first communication groove, the second communication groove, the third communication groove and the fourth communication groove are respectively formed at the lowest points of the first shell, the second shell, the third shell and the fourth shell.
[0008] Optionally, the taper angle of the third shell is represented as θ1, the taper angle of the first shell is represented as θ2, the taper angle of the fourth shell is represented as θ3, the taper angle of the second shell is represented as θ4, the taper angle of the bottom of the first shell is represented as θ5, and θ1< θ2< θ3< θ4< θ5< 180° is satisfied, and the inclination angle of the labyrinth structure satisfies 90°-1 / 2* θ4.
[0009] Optionally, the taper angle θ4 of the second shell is set to 90°< θ4< 110°.
[0010] Compared with the prior art, the utility model has the following beneficial effects:
[0011] Based on the cooperation of different taper surfaces and arc surfaces, the symmetrical 4-layer labyrinth cavities are formed, the communication grooves are selected at the lowest points of each cavity, and the communication grooves of adjacent two cavities are arranged on different shells to further increase the flow path, so that the ventilation labyrinth structure with certain universality, multi-layer cavities and good reflux capacity of each layer, matching positive and negative large slopes and strong anti-interference is formed. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is an overall structure schematic view of the utility model;
[0013] Figure 2 It is a cross-sectional structure schematic view of the utility model;
[0014] Figure 3 It is a cross-sectional structure schematic view of the utility model containing the first communication groove and the third communication groove;
[0015] Figure 4 It is a cross-sectional structure schematic view of the utility model containing the second communication groove and the fourth communication groove;
[0016] Figure 5 It is a labyrinth structure inclination angle range schematic view of the utility model.
[0017] DESCRIPTION OF DRAWINGS:
[0018] 1, box; 2, ventilation valve; 3, labyrinth structure; 401, first shell; 402, second shell; 403, third shell; 404, fourth shell; 501, first cavity; 502, second cavity; 503, third cavity; 504, fourth cavity; 601, first communication groove; 602, second communication groove; 603, third communication groove; 604, fourth communication groove.
[0019] The implementation, functional characteristics and advantages of the utility model will be further described with reference to the drawings. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical scheme and beneficial effects of the utility model clearer, the technical scheme of the utility model is further explained below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the utility model.
[0021] Referring to Figure 1 , Figure 2 and Figure 3 , the utility model provides a general speed reducer ventilation labyrinth structure 3, including box 1, its inside is equipped with labyrinth structure 3, its outside is equipped with air exchange valve 2, and air exchange valve 2 and labyrinth structure 3 are communicated through the ventilation groove on the box 1,
[0022] Labyrinth structure 3 includes first shell 401, second shell 402, third shell 403 and fourth shell 404, first shell 401 is connected to be equipped in the box 1, and the periphery side is arranged as circular arc, the bottom of first shell 401 is arranged as cone and is equipped with first communication groove 601, second shell 402 is arranged as inverted cone and both ends are connected to the inner periphery side of first shell 401, and it is equipped with second communication groove 602, and second shell 402 divides first shell 401 into first cavity 501 and second cavity 502, third shell 403 is arranged as inverted cone and both ends are connected to the box 1 and are equipped in second cavity 502, and form third cavity 503, the bottom of third shell 403 is arranged as circular arc and is equipped with third communication groove 603, fourth shell 404 is arranged as inverted cone, and both ends are arranged on the both sides of ventilation groove respectively and are equipped in third cavity 503, form fourth cavity 504, and fourth shell 404 is equipped with fourth communication groove 604.
[0023] In the embodiment, referring to Figure 2 , Figure 3 and Figure 4The inside of the box 1 is provided with a lubricating oil and air mixture. In operation, the lubricating oil and air mixture enters the first cavity 501 through the first communication groove 601 on the first shell 401. Under the action of the R-arc surface and the inverted taper surface on the periphery of the first shell 401, most of the lubricating oil is intercepted and flows back to the box 1 through the communication groove, and only a small amount of lubricating oil enters the second cavity 502 through the second communication groove 602, while the flow of air is not affected. The lubricating oil entering the second cavity 502 is turned back under the action of the cavity arc surface and flows back to the first cavity 501 from the second communication groove 602, while the air can still flow smoothly without being affected. The mixture that can subsequently enter the third cavity 503 and the fourth cavity 504 contains a large proportion of air and a small amount of oil gas. Under the action of heat exchange, a small amount of oil gas in the mixture may condense and change into liquid again. However, the oil liquid generated by the change has almost no initial speed and will flow downward under the action of gravity after condensing into large oil droplets on the cavity wall. Under the action of the inverted taper surface and the inner communication hole, the oil liquid flows back to the second cavity 502 and finally returns to the box 1, while the air flows through the third cavity 503 to the fourth cavity 504 and finally reaches a pressure dynamic balance state with the external environment (flows in or out) in the air exchange valve 2, thereby achieving the purpose of blocking the oil flow and maintaining the dynamic balance of the air pressure in and outside the reduction box.
[0024] In another embodiment, referring to Figure 2 , Figure 3 and Figure 4 , the first communication groove 601, the second communication groove 602, the third communication groove 603 and the fourth communication groove 604 are respectively arranged at the lowest points of the first shell 401, the second shell 402, the third shell 403 and the fourth shell 404, and are used to cooperate with the lubricating oil droplets to return to the inside of the cavity.
[0025] In another embodiment, referring to Figure 3 and Figure 4 , the taper angle of the third shell 403 is represented as θ1, the taper angle of the first shell 401 is represented as θ2, the taper angle of the fourth shell 404 is represented as θ3, the taper angle of the second shell 402 is represented as θ4, and the taper angle of the bottom of the first shell 401 is represented as θ5, and θ1< θ2< θ3< θ4< θ5< 180° is satisfied, and the inclination angle of the labyrinth structure 3 satisfies 90°-1 / 2* θ4, so as to realize the air exchange function inside the labyrinth structure 3 and no oil accumulation exists.
[0026] In another embodiment, referring to Figure 5 , the range of the taper angle θ4 of the second shell 402 is preferably 90°< θ4< 110°, which can satisfy the maximum inclination range of 35° to 45°.
[0027] The utility model discloses according to certain angle law selects different taper surface and arc surface cooperation, forms symmetrical 4 layer labyrinth structure, selects the horizontal lowest point of every cavity and opens the communicating groove, and the communicating groove of adjacent two cavities is arranged on different shell to further grow the flow path, on this basis, the corresponding taper angle can be adjusted and constructs the ventilation labyrinth structure that can adapt to big inclination angle, through this mode, the purpose of the general design of semi-parameterization can be reached. A certain versatility, multilayer cavity and every layer all have good reflux capacity, can match positive and negative big slope, strong anti-interference ventilation labyrinth structure are successfully constructed.
[0028] Finally, it is explained that the above examples are only used to illustrate the technical solutions of the utility model and are not limited. Although the utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the utility model, and they should be covered in the scope of the claims of the utility model.
Claims
1. A general-purpose speed reducer venting labyrinth structure, characterized by, The box is internally provided with a labyrinth structure, and externally provided with a ventilation valve, and the ventilation valve and the labyrinth structure are communicated through a ventilation groove opened on the box; The labyrinth structure comprises a first shell, a second shell, a third shell and a fourth shell, the first shell is connected inside the box, the peripheral side of the first shell is in the shape of a circular arc, the bottom of the first shell is in the shape of a cone and is provided with a first communication groove; the second shell is in the shape of an inverted cone and both ends of the second shell are connected to the inner peripheral side of the first shell, the second shell is provided with a second communication groove, and the second shell divides the first shell into a first cavity and a second cavity; the third shell is in the shape of an inverted cone and both ends of the third shell are connected to the box and arranged in the second cavity to form a third cavity, the bottom of the third shell is in the shape of a circular arc and is provided with a third communication groove; the fourth shell is in the shape of an inverted cone, both ends of the fourth shell are arranged on both sides of the ventilation groove and in the third cavity to form a fourth cavity, and the fourth shell is provided with a fourth communication groove.
2. The universal reducer venting labyrinth structure of claim 1, wherein, The first communication groove, the second communication groove, the third communication groove and the fourth communication groove are respectively arranged at the lowest points of the first shell, the second shell, the third shell and the fourth shell.
3. The universal reducer venting labyrinth structure of claim 1, wherein, The taper angle of the third shell is represented as θ1, the taper angle of the first shell is represented as θ2, the taper angle of the fourth shell is represented as θ3, the taper angle of the second shell is represented as θ4, the taper angle of the bottom of the first shell is represented as θ5, and θ1< θ2< θ3< θ4< θ5< 180° is satisfied, and the inclination angle of the labyrinth structure satisfies 90°-1 / 2* θ4.
4. The universal reducer venting labyrinth structure of claim 3, wherein, The taper angle θ4 of the second shell is in the range of 90°< θ4< 110°.