Spiral bevel gear speed reducer with tensioning disc on output
Through the connection form of the lock sleeve and bevel gear and the design of the tightening plate, the problem of wear and clearance of the gear reducer under large torque is solved, and high-precision and high-strength transmission is achieved.
Patent Information
- Application Number
- CN202422906085.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Under the use of large torque, the flat key connection between shafts, gears and other components is prone to wear, resulting in clearance and squirming, affecting the transmission accuracy.
The connection form of the locking sleeve and the bevel gear is adopted, combined with the tightening plate structure, replaces the traditional flat key connection, eliminates the gap through the axial adjustment of the locking sleeve, and ensures the close coordination between the bevel gear and the output shaft through the tightening plate.
It improves transmission accuracy and connection strength, reduces transmission errors, and ensures the stability and accuracy of transmission under large torques.
Smart Images
Figure CN223294155U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of reducers and relates to a spiral bevel gear reducer with an output tensioning disc. Background Art
[0002] A reducer is an independent component consisting of a gear transmission, a worm transmission, and a gear-worm transmission enclosed in a rigid housing. It is often used as a reduction transmission device between the prime mover and the working machine. When existing common gear reducers are used in scenarios with high torque requirements, the flat key connection method between the shaft, gears and other components is prone to wear under long-term high torque, resulting in gaps in the fit of parts, which in turn causes movement and jitter during operation, affecting transmission accuracy. Utility Model Content
[0003] In order to overcome the deficiencies of the prior art, the utility model provides a spiral bevel gear reducer with an output tensioning disc.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A spiral bevel gear reducer with an output tensioning plate comprises a housing and an input shaft and an output shaft arranged in the housing, the input shaft and the output shaft being arranged vertically, the input shaft and the output shaft being respectively connected with an input bevel gear and an output bevel gear, the input bevel gear and the output bevel gear being meshed; and further comprising a locking sleeve, the locking sleeve being threadedly connected to the housing along the axial direction of the output shaft, the locking sleeve being against the output bevel gear.
[0006] Furthermore, a tapered roller bearing is sleeved on the output shaft, one axial end of the tapered roller bearing abuts against the output bevel gear, and the other end abuts against the locking sleeve.
[0007] Furthermore, one or both ends of the output shaft form output ends on one or both sides of the box body.
[0008] Furthermore, the output end is provided with a tensioning disk, the output shaft is axially through-set, the shaft end of the output shaft is slotted along the axial direction, and the tensioning disk is sleeved on the outer circumference of the output shaft to form a radially inward clamping force.
[0009] Furthermore, the tensioning plate includes a first ring and a second ring arranged in a stacked manner, screws are axially penetrated by the first ring and the second ring, the inner periphery of the first ring and the inner periphery of the second ring are both set to conical surfaces, and the expansion directions are set relative to each other, and tensioning rings are set inside the first ring and the second ring, and a notch is set on the circumference of the tensioning ring.
[0010] Furthermore, one end of the input shaft forms the input end of the box body, and the input end further includes an input flange fixedly connected to the box body.
[0011] In summary, the benefits of the present invention are:
[0012] In the reducer structure of the present invention, a connection form in which a locking sleeve and a bevel gear are abutted is adopted to replace the flat key connection between the bevel gear and the output shaft. The axial position of the locking sleeve is adjustable for locking, thereby eliminating the axial clearance, ensuring a close fit between the bevel gear and the output shaft, and ensuring transmission accuracy. In addition, the flat key connection at the shaft end of the output shaft is further replaced by a tensioning disk, thereby ensuring connection strength while further reducing transmission errors. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic structural diagram of the reducer of the present utility model.
[0014] Figure 2 for Figure 1 Schematic diagram of the structure of the medium-rise tight plate.
[0015] Figure 3 for Figure 2 Schematic diagram of the cross-section structure in.
[0016] Markings in the figure: 1. Input end housing; 11. Input shaft; 12. Input flange; 13. Input bevel gear; 2. Output end housing; 21. Output shaft; 211. Slot; 22. Tapered roller bearing; 23. Output bevel gear; 24. Locking sleeve; 3. Tensioning plate; 31. First ring; 32. Second ring; 33. Tensioning ring; 331. Notch. DETAILED DESCRIPTION
[0017] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features within these embodiments may be combined with one another, unless they conflict.
[0018] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. Therefore, the drawings only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed arbitrarily, and the component layout type may also be more complicated.
[0019] All directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, horizontal, vertical...) are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0020] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of the present invention may actually be an approximately parallel relationship, and the perpendicular relationship may actually be an approximately perpendicular relationship.
[0021] This embodiment provides a spiral bevel gear reducer with an output tensioning disc, comprising a housing, an input end, and an output end.
[0022] Reference Figure 1 As shown, the box includes an input end shell 1 and an output end shell 2, which are used to set the input shaft 11 and the output shaft 21 respectively. The input end shell 1 and the output end shell 2 are connected to make the internal cavities communicate with each other.
[0023] The input shaft 11 is inserted into the input end housing 1, and the outer periphery of the input shaft 11 is fitted with the inner wall of the input end housing 1 through a bearing. One end of the input shaft 11 is formed as an input end for external torque input on one side of the input end housing 1, and is provided with a locking ring for connection to an external motor shaft, etc. The other end of the input shaft 11 extends into the output end housing 2, and the input end is also provided with an input flange 12, which is fixedly connected to the input end housing 1 for fixed installation with an external input device.
[0024] The output shaft 21 is passed through the output end housing 2, and one or both ends of the output shaft 21 in the axial direction form one or two output ends on the output end housing 2 for outputting torque to an external device. In this embodiment, preferably, in order to optimize the volume for a compact structure and reduce the overall volume occupied by the box, the input shaft 11 and the output shaft 21 form a right-angle structure, the shaft end of the input shaft 11 is keyed to the input bevel gear 13, the outer periphery of the output shaft 21 is sleeved with the output bevel gear 23, and the circumference of the output shaft 21 is also provided with a protruding flange to abut against one side of the output bevel gear 23 to achieve positioning, and the input bevel gear 13 is meshed with the output bevel gear 23 to achieve torque transmission from the input shaft 11 to the output shaft 21.
[0025] In this embodiment, the preferred output shaft 21 is formed with two output ends, and tapered roller bearings 22 are respectively provided on both sides of the output shaft 21. The outer periphery of the tapered roller bearing 22 cooperates with the inner wall of the output end housing 2 to form a positioning support and stable rotation for the output shaft 21. The tapered roller bearing 22 provides a certain axial load, thereby improving the axial impact strength of the output shaft 21.
[0026] Furthermore, a locking sleeve 24 is provided on one or both output ends, and a thread is provided on the outer circumference of the locking sleeve 24, so that the locking sleeve 24 is threadedly connected to the output end housing 2. By rotating the locking sleeve 24, its depth into the output end housing 2 can be adjusted. One of the tapered roller bearings 22 is axially pressed against the output bevel gear 23, and the locking sleeve 24 is axially pressed against the tapered roller bearing 22. By rotating and screwing in the locking sleeve 24, a set axial force is applied to the tapered roller bearing 22 and the output bevel gear 23, so that the output bevel gear 23 is pressed against the flange, thereby eliminating the axial clearance between the output bevel gear 23 and the output shaft 21, thereby improving the transmission accuracy.
[0027] The connection between the output end of a traditional reducer and an external device mostly adopts a flat key form, which is easy to wear in the use scenario of large output torque and affects the transmission accuracy. Therefore, further, the output shaft 21 described in this embodiment is an axial through structure, which is used for the connecting shaft of the external device to pass through and connect. The shaft end of the output shaft 21 is grooved 211 along the axial direction, and a tensioning disk 3 is provided on the outer periphery of the shaft end of the output shaft 21 to make the shaft end of the output shaft 21 deform inward and tightly embrace the connecting shaft.
[0028] Specifically, refer to Figure 2 and Figure 3 The tensioning disk 3 includes a first ring 31 and a second ring 32 arranged in a stacked manner. The first ring 31 and the second ring 32 are connected by an axially penetrated screw, and the axial spacing between the two rings can be adjusted by screwing in and out the screw. The inner periphery of the first ring 31 and the inner periphery of the second ring 32 are both set to conical surfaces of set angles, and the expansion directions of the two conical surfaces are set relative to each other, so that in the axial cross-sectional structure of the tensioning disk 3, the inner peripheries of the two rings form a set obtuse angle.
[0029] The first and second rings 31 and 32 are both sleeved with a tensioning ring 33, which is a thin ring-shaped structure. One end of the tensioning ring 33 in the circumferential direction is set as a disconnected notch 331. The outer periphery of the tensioning ring 33 is against the inner periphery of the first ring 31 and the inner periphery of the second ring 32. When the axial end of the output shaft 21 is passed through the tensioning ring 33, the distance between the two rings is reduced by screwing in the screw, and the two conical surfaces on the two rings are close to each other, thereby forming a radial inward extrusion on the tensioning ring 33. The margin set at the notch 331 reduces the inner diameter of the tensioning ring 33, thereby squeezing the axial end of the output shaft 21, causing it to deform inward and tightly embrace the connecting shaft.
[0030] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.
Claims
1. A spiral bevel gear reducer with an output tensioner, characterized in that: The invention comprises a housing, an input shaft (11) and an output shaft (21) arranged in the housing, wherein the input shaft (11) and the output shaft (21) are arranged vertically, and the input shaft (11) and the output shaft (21) are respectively connected with an input bevel gear (13) and an output bevel gear (23), wherein the input bevel gear (13) and the output bevel gear (23) are meshed; and further comprises a locking sleeve (24), wherein the locking sleeve (24) is threadedly connected to the housing along the axial direction of the output shaft (21), and the locking sleeve (24) abuts against the output bevel gear (23).
2. The spiral bevel gear reducer with output tensioning disc according to claim 1, characterized in that: A tapered roller bearing (22) is sleeved on the output shaft (21), one axial end of the tapered roller bearing (22) abuts against the output bevel gear (23), and the other end abuts against the locking sleeve (24).
3. The spiral bevel gear reducer with output tensioning disc according to claim 1, characterized in that: One or both ends of the output shaft (21) form output ends on one or both sides of the box body.
4. The spiral bevel gear reducer with output tensioning disc according to claim 3, characterized in that: The output end is further provided with a tensioning disc (3), the output shaft (21) is axially through-set, the shaft end of the output shaft (21) is axially provided with a slot (211), and the tensioning disc (3) is sleeved on the outer periphery of the output shaft (21) to form a radially inward clamping force.
5. The spiral bevel gear reducer with output tensioning disc according to claim 4, characterized in that: The tensioning disk (3) comprises a first ring (31) and a second ring (32) which are stacked, wherein screws are axially penetrated by the first ring (31) and the second ring (32), the inner periphery of the first ring (31) and the inner periphery of the second ring (32) are both configured as conical surfaces, and the expansion directions are arranged relative to each other, and a tensioning ring (33) is arranged inside the first ring (31) and the second ring (32), and a notch (331) is arranged on the circumference of the tensioning ring (33).
6. The spiral bevel gear reducer with output tensioning disc according to claim 1, characterized in that: One end of the input shaft (11) forms the input end of the housing, and the input end further comprises an input flange (12) fixedly connected to the housing.