Right-angle speed reducer with split type shell
By setting multiple pairs of sealing structures and oil return channels between the output end cover and the output shaft of the right-angle reducer, the lubricant leakage problem caused by machine vibration is solved, and a tighter sealing effect and lower leakage risk is achieved.
Patent Information
- Application Number
- CN202420850046.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-23
AI Technical Summary
During operation, existing right-angle reducers may have a gap between the output shaft and the output end cover during operation, resulting in lubricating oil leakage.
A right-angle reducer with a split housing is designed, by providing multiple pairs of sealing structures between the output end cap and the output shaft, including a pressing seal, a sealing strip and an oil return passage, combined with a guide rod and an oil seal , minimize gaps and prevent oil leakage.
It effectively reduces oil leakage problems caused by machine vibration, ensures a close fit between the output end cap and the output shaft, improves the sealing effect, and reduces lubricant leakage through the oil return channel.
Smart Images
Figure CN222185685U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reducers, in particular to a right-angle reducer with a split housing. Background Art
[0002] At present, most of the right-angle reducer output end covers on the market use split output end covers, and a sealing ring is set on the output end cover to prevent the leakage of the lubricating oil used in the right-angle reducer shaft. However, during actual operation, due to machine vibration, a gap may be generated between the output shaft and the output end cover, resulting in oil leakage. Utility Model Content
[0003] The purpose of the utility model is to provide a right-angle reducer with a split housing to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a right-angle reducer with a split housing, comprising an output shaft and an output end cover sleeved on the outside of the output shaft, the output end cover comprising a connecting seat, a sealing cover embedded in the connecting seat, and multiple pairs of sealing structures arranged between the connecting seat and the sealing cover, the connecting seat and the sealing cover are both provided with through holes matching the output shaft in the middle, the sealing structure comprises a through groove provided in the sealing cover and a clamping seal installed in the through groove, one end of the clamping seal abuts against the output shaft, and the other end passes through the through groove and is fixed to the connecting seat.
[0005] Through the coordinated setting between the connecting seat, the sealing cover and the sealing structure, the output end cover and the output shaft are more closely fitted, the fixed and dynamic clearance is minimized, and the gap between the output shaft and the output end cover caused by machine vibration during operation is avoided to cause oil leakage.
[0006] The following improvements are made in the present application: the compression seal includes a spring and a top seat, the connecting seat is provided with a groove corresponding to the through groove, one end of the spring is connected to the inner wall of the groove, and the other end is connected to the top seat, and a sealing strip is embedded in the end of the top seat away from the spring, and the outer end surface of the sealing strip is in abutment with the output shaft.
[0007] In the initial state, the spring is resisted and in a compressed state. When a gap is generated between the output shaft and the sealing cover due to vibration, the spring loses its resistance and starts to push in the opposite direction. The top seat moves toward the output shaft under the elastic force of the spring, so that the sealing strip always keeps a close fit with the output shaft.
[0008] The following improvement is made in the present application: a guide rod is provided inside the spring, one end of the guide rod is connected to the inner wall of the groove, and the other end is against the top seat. The guide rod is provided to regulate the movement route of the spring and effectively improve the connection stability between the spring and the top seat.
[0009] The following improvements are made in the present application: the sealing structure also includes an oil seal gasket sleeved on the output shaft and an oil return channel opened on the connecting seat and the sealing cover, and the oil return channel is located below the oil seal gasket. The oil return channel is provided to facilitate the return of lubricating oil to the housing and reduce leakage.
[0010] The following improvement is made in the solution of the present application: a pair of bearings are sleeved in parallel on the output shaft, and a clearance groove cooperating with the bearings is provided on the connecting seat.
[0011] The following improvements are made in the present application: the right-angle reducer also includes a first housing, a second housing, and an intermediate structure for connecting the first housing and the second housing, and the connecting seat is fixedly connected to the first housing. The intermediate structure is used to transition between the first housing and the second housing. On the premise that other components remain unchanged, different models of first housings are connected through the intermediate structure, and flexible selection is made to meet different needs, thereby improving the versatility of the second housing. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:
[0013] Figure 1 It is a schematic diagram of the structure of the utility model;
[0014] Figure 2 It is a cross-sectional view of the sealing structure in the utility model.
[0015] In the figure: 1. output shaft; 11. bearing; 2. connecting seat; 21. groove; 22. clearance groove; 3. sealing cover; 31. through groove; 4. spring; 41. top seat; 42. sealing strip; 43. guide rod; 5. oil seal; 51. oil return channel; 6. first shell; 7. second shell; 8. intermediate structure. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0018] Example
[0019] like Figure 1 As shown, a right-angle reducer with a split housing is mainly composed of an output shaft 1, an output end cover, a first housing 6, a second housing 7 and an intermediate structure 8, wherein the output end cover is sleeved on the outer side of the output shaft 1, and includes a connecting seat 2 and a sealing cover 3 embedded in the connecting seat 2, and the middle of the connecting seat 2 and the sealing cover 3 are provided with through holes matching the output shaft 1, and the upper end surface edge of the connecting seat 2 is provided with a plurality of open grooves, and bolts are installed in the open grooves, and the connecting seat 2 is connected and fixed to the first housing 6 by bolts; a pair of bearings 11 are sleeved in parallel on the output shaft 1, and a yield groove 22 matching the bearings 11 is provided on the connecting seat 2; the intermediate structure 8 is used to connect the first housing 6 and the second housing 7, and the intermediate structure 8 is used to transition between the first housing 6 and the second housing 7. On the premise that other components remain unchanged, different models of first housings 6 are connected through the intermediate structure 8, and flexible selection can be made to meet different needs, thereby improving the versatility of the second housing 7.
[0020] There are multiple pairs of sealing structures between the connecting seat 2 and the sealing cover 3, such as Figure 2 As shown, the sealing structure includes a through groove 31 provided in the sealing cover 3 and a compression seal installed in the through groove 31, and a groove 21 corresponding to the through groove 31 is provided on the connecting seat 2; the compression seal includes a spring 4 and a top seat 41, one end of the spring 4 is connected to the inner wall of the groove 21, and the other end is connected to the top seat 41, and a sealing strip 42 is embedded in the end of the top seat 41 away from the spring 4, and the outer end surface of the sealing strip 42 is matched with the output shaft 1 and surrounds the output shaft 1; a guide rod 43 is provided in the spring 4, one end of the guide rod 43 is connected to the inner wall of the groove 21, and the other end is against the top seat 41. In the initial state, the spring 4 is in contact and in a compressed state. When a gap is generated between the output shaft 1 and the sealing cover 3 due to vibration, the spring 4 loses contact and starts to push in the opposite direction, and the top seat 41 moves toward the output shaft 1 under the elastic force of the spring 4, so that the sealing strip 42 always keeps a close fit with the output shaft 1.
[0021] In order to further ensure the sealing effect and prevent oil leakage, a circle of mounting grooves is opened on the inner side of the sealing cover 3 below the through groove 31. An oil seal 5 is arranged in the mounting groove. The output shaft 1 is multiple-sealed by the oil seal 5. At the same time, an oil return channel 51 is opened on the connecting seat 2 and the sealing cover 3. The oil return channel 51 is located below the oil seal 5 and extends downward to the inside of the first housing 6. The oil return channel 51 can release the internal pressure of the housing, which is beneficial for the lubricating oil to flow back to the housing through the oil return channel 51, thereby reducing leakage.
Claims
1. A right-angle reducer with a split housing, comprising an output shaft (1) and an output end cover sleeved on the outside of the output shaft (1), characterized in that: The output end cover comprises a connection seat (2), a sealing cover (3) embedded in the connection seat (2), and a plurality of pairs of sealing structures arranged between the connection seat (2) and the sealing cover (3); the connection seat (2) and the sealing cover (3) are both provided with through holes in the middle thereof to match the output shaft (1); the sealing structure comprises a through groove (31) provided in the sealing cover (3) and a compression seal installed in the through groove (31); one end of the compression seal abuts against the output shaft (1), and the other end passes through the through groove (31) to be fixed to the connection seat (2).
2. A right-angle reducer with a split housing according to claim 1, characterized in that: The compression seal comprises a spring (4) and a top seat (41); a groove (21) corresponding to the through groove (31) is provided on the connection seat (2); one end of the spring (4) is connected to the inner wall of the groove (21), and the other end is connected to the top seat (41); a sealing strip (42) is embedded in the end of the top seat (41) away from the spring (4); the outer end surface of the sealing strip (42) is in contact with the output shaft (1).
3. A right-angle reducer with a split housing according to claim 2, characterized in that: A guide rod (43) is provided inside the spring (4), one end of the guide rod (43) is connected to the inner wall of the groove (21), and the other end of the guide rod (43) is against the top seat (41).
4. A right-angle reducer with a split housing according to claim 1, characterized in that: The sealing structure further comprises an oil seal (5) sleeved on the output shaft (1) and an oil return channel (51) opened on the connecting seat (2) and the sealing cover (3); the oil return channel (51) is located below the oil seal (5).
5. The right-angle reducer with a split housing according to claim 1, characterized in that: A pair of bearings (11) are sleeved in parallel on the output shaft (1), and a clearance groove (22) matching with the bearings (11) is provided on the connecting seat (2).
6. A right-angle reducer with a split housing according to claim 1, characterized in that: The right-angle reducer further comprises a first housing (6), a second housing (7) and an intermediate structure (8) for connecting the first housing (6) and the second housing (7); the connecting seat (2) is fixedly connected to the first housing (6) by bolts.