CN214465668U - Variable-shaft large-aperture locking device - Google Patents
Variable-shaft large-aperture locking device Download PDFInfo
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- CN214465668U CN214465668U CN202022303946.9U CN202022303946U CN214465668U CN 214465668 U CN214465668 U CN 214465668U CN 202022303946 U CN202022303946 U CN 202022303946U CN 214465668 U CN214465668 U CN 214465668U
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Abstract
The utility model discloses a variable shaft large-aperture locking device, which comprises a lower pressure support ring, a locking shaft inner ring, an upper pressure support ring, a hub tensioning ring and a counter-pulling locking device; the lower pressure support ring and the upper pressure support ring are symmetrically arranged, the lower pressure support ring is sleeved on the outer ring at the front end of the inner ring of the locking shaft, and the upper pressure support ring is sleeved on the outer ring at the rear end of the inner ring of the locking shaft; the lower pressure support ring penetrates through the inner ring at the front end of the hub tensioning ring, and the upper pressure support ring penetrates through the inner ring at the rear end of the hub tensioning ring; the opposite-pulling locking device is used for enabling the lower pressure support ring and the upper pressure support ring to be opposite-pulled mutually, and locking the relative positions of the lower pressure support ring and the upper pressure support ring after opposite pulling; when the lower pressure support ring and the upper pressure support ring are pulled oppositely, the inner ring of the extrusion locking shaft contracts inwards, and the extrusion hub tensioning ring expands outwards. The utility model discloses axial displacement's unstable factor can once only be solved, automatic heart is realized.
Description
Technical Field
The utility model belongs to the technical field of general mechanical equipment's transmission connection part, especially, relate to a variable axle large aperture locking device.
Background
The structure principle of the current standard expansion sleeve of the locking device is shown in figures 1 and 2, wherein the locking torque is mainly formed by utilizing the pressure of a conical inclined plane, the conical surfaces of an inner pressing ring and an outer pressing ring are matched, and the shaft and the hub are locked by the polymerization force formed after a locking bolt is screwed down.
The structure of the existing locking device and the like has the same defects, which are summarized as three defects:
1. after the bolt is screwed down on one side, the bolt can generate different axial displacements in both axial and radial directions, the situation that the precision cannot be centered is generated on the locking occasion of precision transmission, the deviation of concentricity can be caused because the pulling-in point of the conical inclined surface is not at the middle point, namely, the concentricity can not be automatically centered, and the pitch circle jump is generated on the hub of the equipment.
2. In addition, the standard corresponding shaft diameter can not meet the locking occasion of mounting the large hub by the small shaft, for example, the standard motor shaft is 30mm, the corresponding standard hub diameter is required to be 55mm, the hub diameter selection of the universal design is limited in the same mounting occasion, the holes exceeding 55mm are difficult to match, and the selection calculation requirements of all universal equipment can not be met.
3. The end face of a precise locking occasion is not adjustable, the locking end face of the existing similar product cannot adjust a jumping value, for example, a gap of a gear and a clearance fit of a bevel gear cannot adjust a gap of 0.01-0.3 mm after a bolt is screwed down. The swing angle is unstable, the operation is complex, and the requirement on an installer is very high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough among the above-mentioned prior art, provide a variable axle large aperture locking device, can solve above-mentioned problem.
In order to solve the technical problem, the utility model discloses a technical scheme is: a variable-shaft large-aperture locking device comprises a lower pressure support ring, a locking shaft inner ring, an upper pressure support ring, a hub tensioning ring and a counter-pull locking device;
the lower pressure support ring and the upper pressure support ring are symmetrically arranged, the lower pressure support ring is sleeved on the outer ring at the front end of the inner ring of the locking shaft, and the upper pressure support ring is sleeved on the outer ring at the rear end of the inner ring of the locking shaft;
the lower pressure support ring penetrates through the inner ring at the front end of the hub tensioning ring, and the upper pressure support ring penetrates through the inner ring at the rear end of the hub tensioning ring;
the opposite-pulling locking device is used for enabling the lower pressure support ring and the upper pressure support ring to be opposite-pulled mutually, and locking the relative positions of the lower pressure support ring and the upper pressure support ring after opposite pulling;
when the lower pressure support ring and the upper pressure support ring are pulled oppositely, the inner ring of the extrusion locking shaft contracts inwards, and the extrusion hub tensioning ring expands outwards.
In the shaft-variable large-aperture locking device, the outer ring of the inner ring of the locking shaft is provided with the first convex ring, the cross section of the first convex ring is an isosceles trapezoid surface, the bottom edge of the isosceles trapezoid surface of the first convex ring is positioned on the inner ring of the locking shaft, the inner ring surface of the pressing support ring is pressed on one waist surface of the first convex ring, and the inclination gradient of the inner ring surface of the pressing support ring is the same as that of the pressed waist surface; the inner ring surface of the upper pressure support ring is pressed on the other waist surface of the first bulge ring, and the inclination gradient of the inner ring surface of the upper pressure support ring is the same as that of the pressed waist surface; the lower pressure support ring and the upper pressure support ring are symmetrically arranged, and a gap is formed between the lower pressure support ring and the upper pressure support ring.
In the variable-shaft large-aperture locking device, the hub tensioning ring is coaxially arranged on the outer ring of the inner ring of the locking shaft, the inner ring of the hub tensioning ring is provided with a second protrusion ring, the cross section of the second protrusion ring is an isosceles trapezoid, the bottom edge of the isosceles trapezoid of the second protrusion ring is arranged on the hub tensioning ring, the outer ring surface of the pressing support ring is pressed on one waist surface of the second protrusion ring, and the inclination gradient of the outer ring surface of the pressing support ring is the same as that of the pressed waist surface; the outer ring surface of the upper pressure support ring is pressed on the other waist surface of the second bulge ring, and the inclination of the outer ring surface of the upper pressure support ring is the same as the inclination of the pressed waist surface.
In the variable-shaft large-aperture locking device, the counter-pulling locking device is a locking bolt; a plurality of bolt mounting holes with internal threads are uniformly formed in the lower pressure support ring along the circumferential direction of the inner ring of the lower pressure support ring, and a plurality of bolt mounting holes with internal threads are also uniformly formed in the lower pressure support ring along the circumferential direction of the outer ring of the lower pressure support ring; bolt mounting holes are also formed in the positions, corresponding to the lower pressure support rings, of the upper pressure support rings, and the bolt mounting hole in one lower pressure support ring is connected with the bolt mounting hole in one upper pressure support ring through one locking bolt.
Compared with the prior art, the utility model has the following advantage: the utility model discloses a support ring and the upward pressure support ring of pushing down are to drawing, along circumference homogeneous extrusion locking axle inner ring and wheel hub tight ring that rises, axial displacement's unstable factor can once only be solved, realize automatic centering nature, more the free type on the selection of the size of variable axle and wheel hub size, for example 30 mm's diameter of axle, can the maximum selection be 500 on installation wheel hub's internal diameter selection, exceed current all locking device of the same kind's external diameter scope, can reach 0.01 ~ 0.03 in to the adjustable precision of terminal surface runout value, to installation and debugging personnel's operation simplifier more.
1. The utility model is suitable for a butt joint locking between staff and the large aperture.
2. The utility model is suitable for a traditional among the transmission system of modern general equipment is connected.
3. The utility model discloses the convenient installation of instrument (spanner) of available standard is with dismantling, and is suitable for more to the high and uneven occasion of transmission of installation accuracy.
4. The utility model discloses connect safety, need not counter shaft and hub and do heating or cooling, do not destroy the original machining tolerance of axle and hub, can not lead to the fact destruction because of the influence counter shaft and the hub of shearing force to original keyway, round pin etc..
5. The utility model discloses can be used repeatedly, no slip, no axial displacement is fit for high-speed drive.
6. Use the utility model discloses skid when equipment transships and turns round excessively, can protect mechanical parts such as motor!
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of a standard expansion sleeve of a locking device in the prior art.
Fig. 2 is a schematic structural diagram of a standard expansion sleeve of a locking device in the prior art.
Fig. 3 is a schematic view of the exploded structure of the present invention.
Fig. 4 is a schematic view of the assembly structure of the present invention.
Fig. 5 is a sectional view a-a of fig. 4.
Fig. 6 is an enlarged view of fig. 5 at a.
Fig. 7 is an enlarged view of fig. 5 at B.
Description of reference numerals:
1-pressing the support ring; 2, locking the inner ring of the shaft; 3, a hub tensioning ring;
4, pressing the support ring upwards; and 5, locking the bolt.
Detailed Description
As shown in fig. 3-7, the utility model comprises a downward pressing support ring 1, a locking shaft inner ring 2, an upward pressing support ring 4, a hub tensioning ring 3 and a locking bolt 5.
The outer ring of the locking shaft inner ring 2 is provided with a first convex ring, the cross section of the first convex ring is an isosceles trapezoid surface, the bottom edge of the isosceles trapezoid surface of the first convex ring is positioned on the locking shaft inner ring 2, the inner ring surface of the pressing support ring 1 is pressed on one waist surface of the first convex ring, and the inclined gradient of the inner ring surface of the pressing support ring 1 is the same as that of the pressed waist surface; the inner ring surface of the upper pressure support ring 4 is pressed on the other waist surface of the first bulge ring, and the inclination gradient of the inner ring surface of the upper pressure support ring 4 is the same as that of the pressed waist surface; the lower pressure support ring 1 and the upper pressure support ring 4 are symmetrically arranged, and a gap is reserved between the lower pressure support ring 1 and the upper pressure support ring 4.
The hub tensioning ring 3 is coaxially arranged on the outer ring of the locking shaft inner ring 2, the inner ring of the hub tensioning ring 3 is provided with a second convex ring, the cross section of the second convex ring is an isosceles trapezoid surface, the bottom edge of the isosceles trapezoid surface of the second convex ring is arranged on the hub tensioning ring 3, the outer ring surface of the pressing support ring 1 is pressed on one waist surface of the second convex ring, and the inclination gradient of the outer ring surface of the pressing support ring 1 is the same as that of the pressed waist surface; the outer ring surface of the upper pressure support ring 4 is pressed on the other waist surface of the second bulge ring, and the inclination of the outer ring surface of the upper pressure support ring 4 is the same as the inclination of the pressed waist surface.
A plurality of bolt mounting holes with internal threads are uniformly formed in the lower pressure support ring 1 along the circumferential direction of the inner ring of the lower pressure support ring 1, and a plurality of bolt mounting holes with internal threads are also uniformly formed in the lower pressure support ring 1 along the circumferential direction of the outer ring of the lower pressure support ring 1; bolt mounting holes are also formed in the positions, corresponding to the lower pressure support rings 1, of the upper pressure support rings 4, and one bolt mounting hole in each lower pressure support ring 1 is connected with one bolt mounting hole in each upper pressure support ring through one locking bolt 5.
When the utility model is used, the locking shaft inner ring 2 is sleeved on the rotating shaft, the downward pressing support ring 1 is sleeved on the locking shaft inner ring 2, the hub tension ring 3 is sleeved on the downward pressing support ring 1, and finally the upward pressing support ring 4 is embedded between the hub tension ring 3 and the locking shaft inner ring 2, and the downward pressing support ring 1 and the upward pressing support ring 4 are preliminarily connected by using the locking bolt 5, but are not locked; and sleeving a hub on a hub tensioning ring 3, then tightening each locking bolt 5, wherein in the tightening process, the distance between the lower pressure support ring 1 and the upper pressure support ring 4 is reduced, so that the locking shaft inner ring 2 is forced to contract inwards and is locked on the rotating shaft, the hub tensioning ring 3 is forced to expand outwards, and the hub tensioning ring is tensioned on the hub inner ring, and thus the installation of the rotating shaft and the hub is realized.
The locking shaft inner ring 2 and the hub tensioning ring 3 are both non-closed rings, and a transverse disconnection gap is formed in the ring body of the locking shaft inner ring and the hub tensioning ring.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (4)
1. A variable axle large aperture locking device which characterized in that: the device comprises a lower pressure support ring, a locking shaft inner ring, an upper pressure support ring, a hub tension ring and a counter-pull locking device;
the lower pressure support ring and the upper pressure support ring are symmetrically arranged, the lower pressure support ring is sleeved on the outer ring at the front end of the inner ring of the locking shaft, and the upper pressure support ring is sleeved on the outer ring at the rear end of the inner ring of the locking shaft;
the lower pressure support ring penetrates through the inner ring at the front end of the hub tensioning ring, and the upper pressure support ring penetrates through the inner ring at the rear end of the hub tensioning ring;
the opposite-pulling locking device is used for enabling the lower pressure support ring and the upper pressure support ring to be opposite-pulled mutually, and locking the relative positions of the lower pressure support ring and the upper pressure support ring after opposite pulling;
when the lower pressure support ring and the upper pressure support ring are pulled oppositely, the inner ring of the extrusion locking shaft contracts inwards, and the extrusion hub tensioning ring expands outwards.
2. A variable axis large bore locking device as defined in claim 1 wherein: the outer ring of the inner ring of the locking shaft is provided with a first convex ring, the cross section of the first convex ring is an isosceles trapezoid surface, the bottom edge of the isosceles trapezoid surface of the first convex ring is arranged on the inner ring of the locking shaft, the inner ring surface of the pressing support ring is pressed on one waist surface of the first convex ring, and the inclined gradient of the inner ring surface of the pressing support ring is the same as that of the pressed waist surface; the inner ring surface of the upper pressure support ring is pressed on the other waist surface of the first bulge ring, and the inclination gradient of the inner ring surface of the upper pressure support ring is the same as that of the pressed waist surface; the lower pressure support ring and the upper pressure support ring are symmetrically arranged, and a gap is formed between the lower pressure support ring and the upper pressure support ring.
3. A variable axis large bore locking device according to claim 1 or 2 wherein: the hub tensioning ring is coaxially arranged on the outer ring of the inner ring of the locking shaft, the inner ring of the hub tensioning ring is provided with a second convex ring, the cross section of the second convex ring is an isosceles trapezoid surface, the bottom edge of the isosceles trapezoid surface of the second convex ring is arranged on the hub tensioning ring, the outer ring surface of the downward pressing support ring is pressed on one waist surface of the second convex ring, and the inclination gradient of the outer ring surface of the downward pressing support ring is the same as that of the pressed waist surface; the outer ring surface of the upper pressure support ring is pressed on the other waist surface of the second bulge ring, and the inclination of the outer ring surface of the upper pressure support ring is the same as the inclination of the pressed waist surface.
4. A variable axis large bore locking device as defined in claim 1 wherein: the counter-pulling locking device is a locking bolt; a plurality of bolt mounting holes with internal threads are uniformly formed in the lower pressure support ring along the circumferential direction of the inner ring of the lower pressure support ring, and a plurality of bolt mounting holes with internal threads are also uniformly formed in the lower pressure support ring along the circumferential direction of the outer ring of the lower pressure support ring; bolt mounting holes are also formed in the positions, corresponding to the lower pressure support rings, of the upper pressure support rings, and the bolt mounting hole in one lower pressure support ring is connected with the bolt mounting hole in one upper pressure support ring through one locking bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022303946.9U CN214465668U (en) | 2020-10-16 | 2020-10-16 | Variable-shaft large-aperture locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022303946.9U CN214465668U (en) | 2020-10-16 | 2020-10-16 | Variable-shaft large-aperture locking device |
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| CN214465668U true CN214465668U (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022303946.9U Active CN214465668U (en) | 2020-10-16 | 2020-10-16 | Variable-shaft large-aperture locking device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508585A (en) * | 2022-01-25 | 2022-05-17 | 中国船舶重工集团公司第七0三研究所 | Coaxial structure of ultrahigh-speed planetary gear |
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2020
- 2020-10-16 CN CN202022303946.9U patent/CN214465668U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508585A (en) * | 2022-01-25 | 2022-05-17 | 中国船舶重工集团公司第七0三研究所 | Coaxial structure of ultrahigh-speed planetary gear |
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