CN115853919A - Gapless connecting structure of circumferential transmission part and assembling method - Google Patents
Gapless connecting structure of circumferential transmission part and assembling method Download PDFInfo
- Publication number
- CN115853919A CN115853919A CN202211518703.4A CN202211518703A CN115853919A CN 115853919 A CN115853919 A CN 115853919A CN 202211518703 A CN202211518703 A CN 202211518703A CN 115853919 A CN115853919 A CN 115853919A
- Authority
- CN
- China
- Prior art keywords
- transmission
- key
- key groove
- connection
- gapless
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- General Details Of Gearings (AREA)
Abstract
The invention discloses a gapless connecting structure of a circumferential transmission part, which comprises a transmission part I, a transmission part II, a flat key and a gapless connecting key, wherein the transmission part I is provided with a first connecting hole; a flat key and a gapless connecting key are respectively arranged on the two sides of the first transmission part and the second transmission part. The gapless connection structure of the circumferential transmission part can completely eliminate the transmission gap matched with the key groove, thereby eliminating transmission errors, realizing gapless high-precision transmission, and having the characteristics of simple structure, lower cost, convenient disassembly and maintenance, reusability and the like.
Description
Technical Field
The invention relates to a gapless connection structure of a circumferential transmission part, and belongs to the technical field of high-precision transmission.
Background
The main types of bonds commonly used are: flat key connection, semicircular key connection, wedge key connection and tangential key connection.
The primary failure mode of a flat key coupling is face collapse, and shearing of the key generally does not occur unless there is a severe overload. Therefore, it is usually necessary to perform intensity check calculation according to the extrusion stress on the working surface. The primary failure mode of guided flat key couplings is excessive wear and, therefore, conditional strength check calculations are typically required in accordance with the pressure on the work surface.
Semicircular key connection's advantage: the manufacturability is good, convenient assembling, especially suitable for the connection of the conical shaft end and hub, but its disadvantage is very obvious too: the key groove is deep, the weakening of the strength of the shaft is large, and the key groove is generally used for light-load static connection.
The main disadvantages of the wedge key connection: after the wedge key is wedged tightly, the shaft and the wheel teach are matched to generate eccentricity and deflection, so the wedge key connection is generally used for occasions with low requirement on centering precision and low rotating speed.
The main disadvantages of tangential key connections: when a pair of tangential keys is used, only one-way torque transmission is possible, and when two-way torque transmission is required, two pairs of tangential keys which are distributed at 120 degrees to each other are used. Tangential keys are often used on shafts having a diameter greater than 100mm because of their greater weakening of the shaft strength.
Therefore, the existing key connection mode can not meet the requirement on the high-precision transmission of the annular transmission piece and the circular shaft transmission piece. The high-precision axial key connection of the annular transmission part and the circular shaft transmission part is a difficult point in various key connections.
Therefore, a new gapless connection structure of the circumferential transmission member is required to solve the above problems.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the technical problems existing in the existing key connection mode, the invention provides a gapless connection structure of a circumferential transmission piece, and high-precision transmission of the circumferential transmission piece is realized.
The technical scheme is as follows: in order to achieve the purpose, the invention provides a gapless connecting structure of a circumferential transmission part, which comprises a first transmission part, a second transmission part, a flat key and a gapless connecting key;
the first transmission part is a circular ring, the second transmission part is a circular shaft, and the first transmission part is sleeved on the outer side of the second transmission part;
a first key groove is formed in one side of the transmission piece II, and a second key groove is formed in the other side of the transmission piece II; a third key groove is formed in one side, corresponding to the first key groove, of the first transmission piece, and a fourth key groove is formed in one side, corresponding to the second key groove, of the first transmission piece;
two ends of the flat key are respectively arranged in the first key groove and the third key groove;
the gapless connecting key comprises a first part, a second part and a compression screw;
one end of the first part is arranged in the second key groove, the other end of the first part is arranged in the fourth key groove, and the second part is arranged in the fourth key groove;
one side of the second part is provided with an inclined wedge surface, one side of the first part, which is close to the second part, is provided with a sliding surface, and the sliding surface and the inclined wedge surface form inclined wedge matching;
one end of the second part is provided with a fixing structure, a through hole is formed in the fixing structure, a threaded inner hole is formed in one side, close to the fixing structure, of the first part, and the through hole and the threaded inner hole are arranged correspondingly;
the compression screw penetrates through the through hole and is in threaded connection with the threaded inner hole.
Preferably, the inclined wedge surface is at an angle α to the compression screw.
Preferably, the other side of the first part is a first plane, and an angle of alpha is formed between the first plane and the sliding surface.
Preferably, the outer side of the second part is a second plane, and an angle alpha is formed between the second plane and the wedge surface.
Preferably, α < 10 °. The friction self-locking between the inclined wedge block and the sliding surface can be realized. Therefore, in the transmission process, even if no compression screw is arranged, no matter how much circumferential transmission pressure is applied, relative sliding cannot occur between the inclined wedge block and the first part, and high-precision backlash-free transmission is always ensured.
Preferably, one side of the fixing structure far away from the second part is a third plane.
Preferably, the corresponding surfaces of the second part and the fixing structure are a fourth plane and a fifth plane respectively, and the fifth plane is arranged in parallel with the third plane.
Preferably, the third plane is disposed perpendicular to the first plane.
Preferably, a step is arranged on one end side surface of the first part arranged in the fourth key groove, and the width of the step is not less than the transmission clearance between the flat key and the first key groove and the third key groove. The technical characteristic can ensure that the second part and the first part are tensioned between the second key groove and the fourth key groove.
Has the advantages that: the gapless connection structure of the circumferential transmission part realizes gapless precise circumferential transmission of the annular transmission part and the circular shaft transmission part through the matching of the flat key and the gapless connecting piece, has simple structure, lower cost, convenient disassembly and maintenance and repeated utilization, and can completely eliminate the transmission gap of key connection.
The invention also discloses a gapless connection assembly method of the circumferential transmission part, which adopts the gapless connection structure of the circumferential transmission part and comprises the following steps:
1. flat keys are arranged in the first key groove and the third key groove, and the first transmission piece is rotated;
2. and two ends of the first part are arranged in the second key groove and the fourth key groove respectively, the second part is arranged in the fourth key groove and is positioned on the other side of the first part in the relative rotation direction, and the compression screw is screwed down.
Has the advantages that: the gapless connection assembly method of the circumferential transmission piece is reasonable in arrangement and convenient to assemble, and can effectively eliminate the rotating backlash of the annular transmission piece and the circular shaft transmission piece in the clockwise direction and the anticlockwise direction.
Drawings
FIG. 1 is a schematic view of a gapless connection of circumferential transmission elements;
FIG. 2 is a partial schematic view of the gapless connection of the circumferential transmission;
fig. 3 is a schematic structural view of the gapless connection key.
Detailed Description
The following description of the preferred embodiments of the present invention with reference to the accompanying drawings will more clearly and completely illustrate the technical solutions of the present invention.
Example 1:
referring to fig. 1, the gapless connection structure of the circumferential transmission member of the present invention includes a first transmission member 4, a second transmission member 5, a flat key 6 and a gapless connection key; the first transmission piece 4 is a circular ring, the second transmission piece 5 is a circular shaft, and the first transmission piece 4 is sleeved on the outer side of the second transmission piece 5; a first key groove is formed in one side of the second transmission piece 5, and a second key groove is formed in the other side of the second transmission piece; one side of the first transmission member 4 corresponding to the first key groove is provided with a third key groove, and one side of the first transmission member 4 corresponding to the second key groove is provided with a fourth key groove. Both ends of the flat key 6 are respectively arranged in the first key groove and the third key groove.
Specifically, the gapless connecting key comprises a first part 1, a second part 2 and a compression screw 3, wherein one end of the first part 1 is arranged in the second key groove, the other end of the first part 1 is arranged in the fourth key groove, and the second part 2 is arranged in the fourth key groove; one side of the second part 2 is provided with an inclined wedge surface, one side of the first part 1, which is close to the second part 2, is provided with a sliding surface, and the sliding surface and the inclined wedge surface form inclined wedge matching; one end of the second part 2 is provided with a fixing structure, a through hole is formed in the fixing structure, a threaded inner hole is formed in one side, close to the fixing structure, of the first part 1, and the through hole and the threaded inner hole are arranged correspondingly; the compression screw 3 passes through the through hole and is in threaded connection with the threaded inner hole.
The invention discloses a gapless assembling method of a circumferential transmission part, which comprises the following steps:
s1: placing a flat key 6 into the third key groove of the first transmission part 4 and the first key groove of the second transmission part 5, and rotating the first transmission part 4 clockwise to enable one end of the flat key 6 to be tightly connected with the third key groove and the other end of the flat key 6 to be tightly connected with the first key groove, so that the rotating backlash of the two transmission parts in the clockwise direction is eliminated;
s2: a first part 1 is placed in a fourth key groove of a first transmission piece 4 and a second key groove of a second transmission piece 5, a second part 2 is placed on one side of the first part 1, and the second part 2 and the first part 1 are tightly tensioned in the fourth key groove by screwing a compression screw 3 between the second part 2 and the first part 1, so that the rotating backlash of the two transmission pieces in the counterclockwise direction can be eliminated, and the fact that no rotating backlash exists in the two directions is achieved.
As shown in fig. 2, a step is disposed on one side of the first part 1 in the fourth key slot, and the width x of the step is not less than the transmission gap between the flat key 6 and the first and third key slots, so as to ensure that the second part 2 and the first part 1 are tensioned in the fourth key slot.
As shown in FIG. 3, the inclined angle alpha of the wedge surface relative to the side wall of the key slot is less than 10 degrees, so that friction self-locking between the part two 2 and the part one 1 is realized. Therefore, in the transmission process, even if the compression screw 3 is not arranged, no matter how much circumferential transmission pressure is applied, relative sliding cannot occur between the part II 2 and the part I1, and high-precision backlash-free transmission is always ensured.
The above detailed description merely describes preferred embodiments of the present invention and does not limit the scope of the invention. Without departing from the spirit and scope of the present invention, it should be understood that various changes, substitutions and alterations can be made herein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (10)
1. A gapless connection structure of a circumferential transmission part is characterized by comprising a first transmission part (4), a second transmission part (5), a flat key (6) and a gapless connection key;
the first transmission part (4) is a circular ring, the second transmission part (5) is a circular shaft, and the first transmission part (4) is sleeved on the outer side of the second transmission part (5);
a first key groove is formed in one side of the second transmission piece (5), and a second key groove is formed in the other side of the second transmission piece; a third key groove is formed in one side, corresponding to the first key groove, of the transmission piece I (4), and a fourth key groove is formed in one side, corresponding to the second key groove, of the transmission piece I (4);
two ends of the flat key (6) are respectively arranged in the first key groove and the third key groove;
the gapless connecting key comprises a first part (1), a second part (2) and a compression screw (3);
one end of the first part (1) is arranged in the second key groove, the other end of the first part (1) is arranged in the fourth key groove, and the second part (2) is arranged in the fourth key groove;
one side of the second part (2) is provided with an inclined wedge surface, one side of the first part (1) close to the second part (2) is provided with a sliding surface, and the sliding surface and the inclined wedge surface form inclined wedge matching;
one end of the second part (2) is provided with a fixing structure, a through hole is formed in the fixing structure, a threaded inner hole is formed in one side, close to the fixing structure, of the first part (1), and the through hole and the threaded inner hole are arranged correspondingly;
the compression screw (3) penetrates through the through hole and is in threaded connection with the threaded inner hole.
2. A slackless connection of a circumferential transmission according to claim 1, wherein said slanted wedge surface is angled at an angle α to said compression screw (3).
3. A slackless connection of a circumferential transmission member according to claim 1, wherein said other side of said first member (1) is a first plane, said first plane and said sliding surface being at an angle α.
4. A slackless connection of a circumferential transmission according to claim 1, wherein said second part (2) is provided with a second flat surface on the outside, said second flat surface and said wedge surface forming an angle α therebetween.
5. A gapless connection of a circumferential transmission according to any of claims 2-4, wherein α < 10 °.
6. A slackless connection of a circumferential transmission member according to claim 1, wherein a side of said fastening means facing away from said second part (2) is a third plane.
7. A slackless connection of a circumferential transmission member according to claim 6, wherein corresponding surfaces of said second part (2) and said fastening structure are a fourth plane and a fifth plane, respectively, said fifth plane being arranged in parallel with said third plane.
8. The slackless connection of a circumferential drive member of claim 6, wherein said third plane is disposed perpendicular to said first plane.
9. A gapless connection of a circumferential transmission according to claim 1, wherein the end of the first part (1) arranged in the fourth key slot is flanked by a step, the width of the step being smaller than the transmission gap between the flat key (6) and the first and third key slots.
10. A method for assembling a gapless connection of an annular transmission element, wherein the gapless connection structure of a circumferential transmission element according to any one of claims 1 to 9 is adopted, comprising the steps of:
1. arranging a flat key (6) in the first key groove and the third key groove, and rotating the first transmission piece (4);
2. and two ends of the first part (1) are respectively arranged in the second key groove and the fourth key groove, the second part (2) is arranged in the fourth key groove, the second part (2) is positioned on the other side of the first part (1) in the relative rotation direction, and the compression screw (3) is screwed down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211518703.4A CN115853919A (en) | 2022-11-30 | 2022-11-30 | Gapless connecting structure of circumferential transmission part and assembling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211518703.4A CN115853919A (en) | 2022-11-30 | 2022-11-30 | Gapless connecting structure of circumferential transmission part and assembling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115853919A true CN115853919A (en) | 2023-03-28 |
Family
ID=85668202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211518703.4A Pending CN115853919A (en) | 2022-11-30 | 2022-11-30 | Gapless connecting structure of circumferential transmission part and assembling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115853919A (en) |
-
2022
- 2022-11-30 CN CN202211518703.4A patent/CN115853919A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2016333343B2 (en) | Gear with helical toothing, and segment for a gear | |
| CN205533840U (en) | Novel cross axle universal joint | |
| US6540617B2 (en) | Flange yoke for a universal joint and a universally jointed shaft | |
| CN115853919A (en) | Gapless connecting structure of circumferential transmission part and assembling method | |
| US5409324A (en) | High strength, quick connect/disconnect coupling | |
| CN103775520A (en) | Shaft coupling mechanism and universal coupler thereof | |
| CN109404490B (en) | Chain piece transmission structure | |
| CN215719744U (en) | Coupling assembly for pump body and motor | |
| CN208331019U (en) | A kind of anti-bias expansion connecting sleeve | |
| CN217653199U (en) | Speed reducer input shaft connecting structure | |
| CN2826060Y (en) | Improved rigid coupling for condensed water pump | |
| CN216618314U (en) | Coupling convenient to dismouting quick replacement | |
| CN107366688B (en) | Coupling structure | |
| US11603887B2 (en) | Coupling | |
| CN115653979A (en) | Bilateral gapless connecting key | |
| CN220452545U (en) | Anti-movement limiting elastic coupling | |
| CN106763264B (en) | Metal disc-folding flexible coupling | |
| CN212250816U (en) | High-speed rotor connection structure | |
| CN210164813U (en) | Shaft hub connecting assembly | |
| CN112833108B (en) | Laminated flexible coupling | |
| CN219888538U (en) | Key-inserting coupler | |
| CN114151378B (en) | Shafting assembly structure | |
| CN212775221U (en) | Torque transmission flange structure and part with same | |
| CN212985836U (en) | Drum-shaped tooth type safety coupling | |
| CN219712088U (en) | Radial installation shaft coupling suitable for high rotational speed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |