Shaft positioner with flange and sealing cavity
By designing a shaft positioner with a flange and a sealing cavity, and using the cooperation of tightening screws and wire rings, the failure problem caused by the simple structure of the shaft positioner in the existing technology is solved, and high-precision axial positioning of the bearing is achieved. .
Patent Information
- Application Number
- CN202423062015.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-12-12
AI Technical Summary
The structure of the shaft positioner in the prior art is too simple and prone to failure, which is difficult to meet the high positioning requirements of the bearing inner ring.
A shaft positioner with a flange and a sealed cavity is designed, including a shaft body, a wire ring, a first positioning ring and a second positioning ring. Through the cooperation of the tightening screw and the steel wire ring, axial limiting and lifting are achieved. Tight positioning.
Through the cooperation of the first position ring and the second positioning ring, the effective positioning of the round shaft parts is achieved. The tight screw can adjust the position of the first position ring, and the steel wire ring prevents the axial movement of the second positioning ring. axial tight positioning.
Smart Images
Figure CN222351452U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of axial positioning devices for mechanical equipment, in particular to a shaft positioner with a flange and a sealing cavity. Background Art
[0002] In mechanical equipment, the application of shaft positioners is very common. In addition to the positioning steps of the shaft itself, various nuts, shaft retaining rings, pins, sleeves and other parts can be used as shaft positioners. The function of the shaft positioner is to prevent the positioned parts from moving axially. The positioned parts are generally gears and bearings, and the requirements for the inner ring of the bearing to be pressed and positioned are very high. The shaft positioners in the prior art are too simple in structure, and often fail during use, causing a lot of trouble to the users. Utility Model Content
[0003] The utility model aims to provide a shaft positioner with a flange and a sealing cavity to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.
[0004] The technical solutions adopted to solve the above technical problems are:
[0005] A shaft positioner with a flange and a sealing cavity, comprising: a shaft body, a wire ring, a first positioning ring and a second positioning ring;
[0006] The shaft body is in a cylindrical shape, the first positioning ring and the second positioning ring are both in a circular ring shape, the first positioning ring and the second positioning ring are both coaxially sleeved on the shaft body, the shaft body is provided with an inner groove, the inner side of the second positioning ring is provided with an outer groove, the inner groove and the outer groove are aligned with each other in the radial direction, and the wire ring is embedded in the inner groove and the outer groove;
[0007] The first positioning ring and the second positioning ring are axially sleeved with each other, and the second positioning ring is axially threaded with a tightening screw, and the tightening screw is axially abutted against the first positioning ring.
[0008] The shaft positioner with flange and sealing cavity provided by the utility model has at least the following beneficial effects: the components on the round shaft are positioned by the first positioning ring and the second positioning ring. The tightening screw can tighten the first positioning ring in the axial direction, so that the first positioning ring can be adjusted in the axial direction relative to the second positioning ring, thereby achieving the function of providing axial limit. After the wire ring is inserted into the inner and outer grooves, the inner and outer grooves can be kept aligned, preventing the second positioning ring from moving to one side in the axial direction relative to the shaft body, so that the second positioning ring is axially opposite to the shaft body and provides support for the first positioning ring to achieve axial tightening and positioning.
[0009] As a further improvement of the above technical solution, the second positioning ring is coaxially provided with an annular inner cavity, and the first positioning ring is sealingly embedded in the inner cavity.
[0010] As a further improvement of the above technical solution, one end of the first positioning ring is sealed to the inner cavity, and the other end is provided with a tightening end surface perpendicular to the axial direction.
[0011] As a further improvement of the above technical solution, a flange extending circumferentially is provided on the radial outer side of the second positioning ring.
[0012] As a further improvement of the above technical solution, the tightening screw is axially threaded through the second positioning ring, and a tightening end is provided at one end of the tightening screw facing the first positioning ring.
[0013] As a further improvement of the above technical solution, the tightening end is in a conical shape, and the first positioning ring is provided with a conical hole corresponding to the tightening end.
[0014] As a further improvement of the above technical solution, the plurality of tightening screws are evenly distributed around the circumference.
[0015] As a further improvement of the above technical solution, the wire ring is in a circular ring shape and has an opening.
[0016] As a further improvement of the above technical solution, the cross-section of the wire ring is circular or rectangular, and the cross-sectional shapes of the inner and outer grooves are set according to the cross-sectional shape of the wire ring. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments;
[0018] Figure 1 This is a three-dimensional schematic diagram of an embodiment of a shaft positioner with a flange and a sealing cavity provided by the utility model;
[0019] Figure 2 The utility model provides a shaft positioner with a flange and a sealing cavity, and a three-dimensional exploded diagram of an embodiment thereof Figure 1 ;
[0020] Figure 3 The utility model provides a shaft positioner with a flange and a sealing cavity, and a three-dimensional exploded diagram of an embodiment thereof Figure 2 ;
[0021] Figure 4 The utility model provides a shaft positioner with a flange and a sealing cavity, and a side sectional view of one embodiment thereof.
[0022] In the figure: 100-first positioning ring, 110-conical hole, 200-second positioning ring, 210-inner cavity, 220-screw hole, 230-flange, 300-tightening screw, 310-tightening end, 400-wire ring, 410-opening. DETAILED DESCRIPTION
[0023] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.
[0024] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0025] In the description of the present utility model, if there are words such as "several", it means one or more, "more" means more than two, greater than, less than, exceed, etc. are understood to exclude the number, and above, below, within, etc. are understood to include the number.
[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0027] Reference Figures 1 to 4 The shaft positioner with flange and sealing cavity of the utility model is made into the following embodiments:
[0028] A shaft positioner with a flange and a sealing cavity comprises a shaft body, a wire ring 400 , a first positioning ring 100 and a second positioning ring 200 .
[0029] The first positioning ring 100 and the second positioning ring 200 are both in the shape of a ring. The shaft body is in the shape of a cylinder and extends axially in the front-back direction. The first positioning ring 100 and the second positioning ring 200 are both coaxially sleeved on the shaft body.
[0030] The shaft body is provided with an inner groove, and the inner side of the second positioning ring 200 is provided with an outer groove. The inner groove is in a circular ring shape and is provided on the outer peripheral surface of the shaft body. The inner groove and the outer groove are aligned with each other in the radial direction. The wire ring 400 is embedded in the inner groove and the outer groove.
[0031] The first positioning ring 100 and the second positioning ring 200 are mutually sleeved in the axial direction. A tightening screw 300 is threadedly passed through the second positioning ring 200 in the axial direction, and the tightening screw 300 abuts against the first positioning ring 100 in the axial direction.
[0032] In actual use, the components on the circular shaft are positioned by the first positioning ring 100 and the second positioning ring 200. The tightening screw 300 can tighten the first positioning ring 100 in the axial direction, so that the first positioning ring 100 can be adjusted in the axial direction relative to the second positioning ring 200, thereby achieving the function of providing axial limit. After the wire ring 400 is inserted into the inner and outer grooves, the second positioning ring 200 and the shaft body can be fixed to each other in the axial direction, preventing the second positioning ring 200 from moving axially relative to the shaft body, thereby providing support for the first positioning ring 100 and achieving axial tightening positioning.
[0033] Taking the axial direction of the shaft body as the front-to-back direction, in this embodiment, the first positioning ring 100 and the second positioning ring 200 are arranged front-to-back, and the first positioning ring 100 is arranged at the front side of the second positioning ring 200. The outer groove is arranged at the rear end of the inner circumference of the second positioning ring 200.
[0034] The front part of the second positioning ring 200 is coaxially provided with a circular ring-shaped inner cavity 210. The rear end of the first positioning ring 100 is sealed and embedded in the inner cavity 210, and the front end of the first positioning ring 100 is provided with a tightening end face perpendicular to its axial direction. The outer peripheral surface of the first positioning ring 100 is axially slidingly and sealingly connected with the circumferential inner wall of the inner cavity 210. When the first positioning ring 100 and the second positioning ring 200 are sleeved on the shaft body, the rear end face of the first positioning ring 100 and the inner cavity 210 can form a sealed cavity with the shaft body, so that the grease filled therein is not easy to leak out, and the axial adjustment of the first positioning ring 100 and the second positioning ring 200 can be guaranteed for a long time and avoid the influence of rust.
[0035] In this embodiment, there are multiple jacking screws 300. The multiple jacking screws 300 are evenly distributed around the circumference of the first positioning ring 100 and the second positioning ring 200. Referring to the drawings, the number of the jacking screws 300 in this embodiment is eight.
[0036] Specifically, the second positioning ring 200 has a plurality of screw holes 220 evenly distributed around the circumference. The axial direction of the tightening screws 300 is parallel to the axial directions of the first positioning ring 100 and the second positioning ring 200. The tightening screws 300 are threadedly disposed in the screw holes 220 in a one-to-one correspondence.
[0037] The tightening screw 300 is provided with a tightening end 310 at one end facing the first positioning ring 100. When the tightening screw 300 is rotated, the tightening screw 300 moves relative to the second positioning ring 200 along the axial direction under the action of thread transmission, so that the tightening end 310 is pressed against the rear end surface of the first positioning ring 100 to achieve the function of providing axial limiting.
[0038] In a further embodiment, the tightening end 310 is in a conical shape, and the first positioning ring 100 is provided with a tapered hole 110 corresponding to the tightening end 310. The tightening end 310 can be embedded in the corresponding tapered hole 110 to position the tightening end 310, thereby preventing the first positioning ring 100 and the second positioning ring 200 from relative rotational deviation. Furthermore, the taper angle of the tapered hole 110 is greater than the taper angle of the tightening end 310, so that the contact between the tightening end 310 and the tapered hole 110 is a line contact in the shape of a circular ring, which has a better anti-loosening ability.
[0039] In the axial projection, the tightening screw 300 is within the range of the inner cavity 210, and the tightening end 310 passes through the screw hole 220 and is arranged in the inner cavity 210, so as to prevent the tightening screw 300 from generating resistance to the high-speed rotation of the shaft positioner with flange and sealing cavity, and the operation is smoother.
[0040] The jacking screw 300 is a cylindrical machine screw. The length of the jacking screw 300 is set according to the distance between the rear end of the second positioning ring 200 and the inner cavity 210. The rear end of the jacking screw 300 is embedded in the screw hole 220 to avoid being exposed and affecting the rear end surface of the second positioning ring 200 or hindering the rotation. The rear end of the jacking screw 300 has a hexagonal groove to facilitate the screwing of the jacking screw 300.
[0041] In actual use, the shaft body is rotated by the bearing. When the shaft positioner of the utility model is used to realize the axial positioning of the bearing on the shaft body: the shaft body is coaxially passed through the bearing, the shaft body is provided with a shaft shoulder, the shaft shoulder is arranged on the front side of the bearing, and the first positioning ring 100 and the second positioning ring 200 are arranged on the rear side of the bearing. The second positioning ring 200 realizes axial positioning with the shaft body through the wire ring 400, preventing the second positioning ring 200 from moving backward relative to the shaft body. At this time, by rotating the tightening screw 300 to tighten forward, the distance between the first positioning ring 100 and the second positioning ring 200 is increased, so that the tightening end face of the front end of the first positioning ring 100 is pressed against the rear side of the bearing, and the inner ring of the bearing is clamped between the shaft shoulder and the tightening end face, so as to realize the axial positioning of the bearing.
[0042] In this embodiment, a flange 230 extending circumferentially is provided on the radial outer side of the second positioning ring 200. The flange 230 is provided at the outer front end of the second positioning ring 200. The front end surface of the flange 230 is flush with the front end surface of the second positioning ring 200. In actual use, the stator and rotor of the encoder or motor are provided on one axial side of the shaft positioner, and the bearing of the rotating shaft is provided on the other axial side of the shaft positioner. The flange 230 can form a barrier on both axial sides at the outer periphery of the second positioning ring 200, thereby blocking the grease of the bearing on one side of the bearing and preventing the grease from overflowing to one side of the stator and rotor of the encoder or motor.
[0043] Furthermore, when the shaft positioner with flange and sealed cavity of the utility model is applied to a hole-type servo motor, the cold air introduced through the front flange of the motor can cool the space where the shaft body is located. The motor is arranged on one axial side of the shaft positioner and is transmission-connected to the shaft body, and the bearing on the shaft body is arranged on the other axial side of the shaft positioner. The flange 230 can guide and divert the cold air. The cold air flow is distributed through the flange 230 so that the diverted cold air cools the bearing and the motor stator and rotor respectively to avoid local heat accumulation.
[0044] In this embodiment, the wire ring 400, the inner slot and the outer slot all extend in a circular ring shape. The outer slot is arranged at the inner rear end of the second positioning ring 200, and the rear part of the outer slot is open to the rear. During the installation process, the second positioning ring 200 is first moved forward so that the outer slot and the inner slot are staggered front and back. Then the wire ring 400 is inserted into the inner slot. Then the second positioning ring 200 is pushed back tightly so that the outer slot is stuck on the outer periphery of the wire ring 400.
[0045] For easy installation, the wire ring 400 has an opening. The wire ring 400 with an opening is more likely to deform under the action of external force, so that it can be conveniently inserted into the shaft body and clamped in the inner clamping groove.
[0046] In this embodiment, the cross section of the wire ring 400 is circular. The inner slot is in a semicircular shape, and the front of the outer slot is in an arc shape. In other embodiments, the cross section of the wire ring 400 is rectangular or other non-circular, and the cross-sectional shapes of the inner slot and the outer slot are set according to the cross-sectional shape of the wire ring 400.
[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0048] Although the embodiments of the present invention have been shown and described, those skilled in the art may make various changes, modifications, substitutions and variations to these embodiments without departing from the principles and purpose of the present invention. These changes, modifications, equivalent variations or substitutions are all included in the scope defined by the claims of this application. The scope of the present invention is defined by the claims and their equivalents.
Claims
1. A shaft positioner with a flange and a sealed cavity, characterized in that: include: A shaft body, a wire ring, a first positioning ring and a second positioning ring; The shaft body is in a cylindrical shape, the first positioning ring and the second positioning ring are both in a circular ring shape, the first positioning ring and the second positioning ring are both coaxially sleeved on the shaft body, the shaft body is provided with an inner groove, the inner side of the second positioning ring is provided with an outer groove, the inner groove and the outer groove are aligned with each other in the radial direction, and the wire ring is embedded in the inner groove and the outer groove; The first positioning ring and the second positioning ring are axially sleeved with each other, and the second positioning ring is axially threaded with a tightening screw, and the tightening screw is axially abutted against the first positioning ring.
2. The shaft positioner with flange and sealing chamber according to claim 1, characterized in that: The second positioning ring is coaxially provided with an annular inner cavity, and the first positioning ring is sealingly embedded in the inner cavity.
3. The shaft positioner with flange and sealing chamber according to claim 2, characterized in that: One end of the first positioning ring is sealed and connected to the inner cavity, and the other end is provided with a tightening end surface perpendicular to the axial direction.
4. The shaft positioner with flange and sealing chamber according to claim 1, characterized in that: A flange extending circumferentially is provided on the radial outer side of the second positioning ring.
5. The shaft positioner with flange and sealing chamber according to claim 1, characterized in that: The tightening screw is threadedly inserted into the second positioning ring along an axial direction, and a tightening end is provided at one end of the tightening screw facing the first positioning ring.
6. The shaft positioner with flange and sealing chamber according to claim 5, characterized in that: The tightening end is in a conical shape, and the first positioning ring is provided with a conical hole corresponding to the tightening end.
7. The shaft positioner with flange and sealing chamber according to claim 5, characterized in that: The plurality of tightening screws are evenly distributed around the circumference.
8. The shaft positioner with flange and sealing chamber according to claim 1, characterized in that: The wire ring is in a circular ring shape and has an opening.
9. The shaft positioner with flange and sealing chamber according to claim 1, characterized in that: The cross section of the wire ring is circular or rectangular, and the cross-sectional shapes of the inner and outer grooves are set according to the cross-sectional shape of the wire ring.