CN215334052U - Dovetail groove type coupling - Google Patents
Dovetail groove type coupling Download PDFInfo
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- CN215334052U CN215334052U CN202121166442.5U CN202121166442U CN215334052U CN 215334052 U CN215334052 U CN 215334052U CN 202121166442 U CN202121166442 U CN 202121166442U CN 215334052 U CN215334052 U CN 215334052U
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Abstract
The utility model belongs to the technical field of couplings, and particularly relates to a dovetail groove type coupling which comprises a first connecting piece and a second connecting piece which are connected through an intermediate piece; the mandrel sequentially penetrates through the first connecting piece, the middle piece and the second connecting piece; dovetail grooves are respectively arranged on two end faces of the intermediate piece, and the dovetail grooves on the two end faces form an angle of 90 degrees with each other; one end of the first connecting piece and one end of the second connecting piece are respectively provided with a dovetail tenon matched with the dovetail grooves on the two end faces of the middle piece, and the other end of the first connecting piece and the second connecting piece are respectively provided with a flat key groove along the length direction. The connecting piece is connected with the intermediate piece through the dovetail tenon and the dovetail groove, the contact surface is large, abrasion between the spindle and the traction shaft and the coupler caused by long-time operation is avoided, and the service life of the coupler is prolonged.
Description
Technical Field
The utility model belongs to the technical field of couplings, and particularly relates to a dovetail groove type coupling.
Background
In the operation process of mechanical equipment, the main shaft and the traction shaft are often required to rotate synchronously, in order to ensure that the main shaft and the traction shaft rotate synchronously, a coupler is required to connect the two shafts, the currently used coupler structure is shown in figure 1, a connecting block 02 is arranged at the joint of the two connecting pieces 01, then the connecting block 02 is connected with the connecting piece 01 of the coupler through a pin shaft 03, along with the long-time operation of the main shaft and the traction shaft, the pin shaft 03 and the connecting block 02 of the coupler are worn and loosened, and the main shaft and the traction shaft are asynchronous, so that the normal use of the equipment is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides the dovetail groove type coupling, the two connecting pieces of the coupling are connected with the intermediate piece in a dovetail tenon and dovetail groove mode, the contact surface is large, abrasion between the main shaft and the traction shaft which operate for a long time and the coupling is avoided, the service life of the coupling is prolonged, and normal operation of equipment is ensured.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a dovetail coupling, comprising:
the first connecting piece and the second connecting piece are connected through the intermediate piece;
the mandrel sequentially penetrates through the first connecting piece, the middle piece and the second connecting piece;
dovetail grooves are respectively arranged on two end faces of the intermediate piece, and the dovetail grooves on the two end faces form an angle of 90 degrees with each other;
one end of the first connecting piece and one end of the second connecting piece are respectively provided with a dovetail tenon matched with the dovetail grooves on the two end faces of the middle piece, and the other end of the first connecting piece and the second connecting piece are respectively provided with a flat key groove along the length direction.
In order to realize the installation of the mandrel, through holes are respectively formed in the centers of the first connecting piece, the middle piece and the second connecting piece, and the mandrel sequentially penetrates through the through holes of the first connecting piece, the middle piece and the second connecting piece.
Preferably, the aperture of the through hole matches the diameter of the mandrel.
As a preferable structure of the present invention, the first connecting member and the second connecting member respectively include a middle connecting structure and a shaft connecting structure which are fixedly connected.
Further preferably, a dovetail tenon is arranged on the end face of the middle connecting structure, and a flat key groove along the length direction is formed in the shaft connecting structure.
Still further preferably, the intermediate connecting structure and the shaft connecting structure are of an integrally formed structure.
As another preferable structure of the present invention, the structure of the first connecting member is the same as the structure of the second connecting member.
As a preferred structure of the utility model, two end faces of the intermediate piece are respectively provided with a first dovetail groove and a second dovetail groove which are 90 degrees to each other, one end of the first connecting piece is provided with a first dovetail tenon which is matched and connected with the first dovetail groove, and a first flat key groove along the length direction is arranged in the other end of the first connecting piece;
and a second dovetail tenon matched and connected with the second dovetail groove is arranged on one end face of the second connecting piece, and a second flat key groove along the length direction is formed in the other end of the second connecting piece.
Further preferably, the first connecting piece comprises a first middle connecting structure and a first shaft connecting structure which are fixedly connected, a first dovetail tenon is arranged on the end face of the first middle connecting structure, and a first flat key groove along the length direction is formed in the first shaft connecting structure;
the second connecting piece comprises a second middle connecting structure and a second shaft connecting structure which are fixedly connected, a second dovetail tenon is arranged on the end face of the second middle connecting structure, and a second flat key groove along the length direction is formed in the second shaft connecting structure
Compared with the prior art, the utility model has the beneficial effects that:
when the two connecting pieces are connected with the intermediate piece, the dovetail tenon on the connecting pieces is matched with the dovetail groove on the intermediate piece, so that the contact surface is large, and the influence on the normal use of equipment caused by abrasion can be avoided in the long-time running process; the mandrel arranged between the two connecting pieces and the intermediate piece ensures that all parts of the coupling cannot be separated from each other in the radial direction. The dovetail groove design of 90 degrees on the intermediate piece can also meet the requirement of radial movement when the main shaft and the traction shaft are slightly eccentric, so that the transmission is smoother. The design of the utility model prolongs the service life of the coupler and ensures the stable and accurate operation of the equipment.
Drawings
FIG. 1 is a schematic view of a prior art coupling construction;
fig. 2 and 3 are schematic overall structures of the utility model;
FIG. 4 is a side view of the overall construction of the coupling of the present invention;
FIG. 5 is an exploded view of the present invention;
FIG. 6 is a cross-sectional view of the present invention;
FIG. 7 is a schematic structural view of an intermediate member according to the present invention;
fig. 8 and 9 are schematic views of the first connecting member of the present invention from different angles.
In the figure, 01, a connecting piece, 02, a connecting block, 03 and a pin shaft;
1. the connecting structure comprises a first connecting piece, a second connecting piece, a middle piece, a first connecting piece, a second connecting piece, a mandrel, a first middle connecting structure, a first shaft connecting structure, a first dovetail groove, a first dovetail tenon, a first flat key groove, a second middle connecting structure, a second shaft connecting structure, a second dovetail groove, a second dovetail tenon, a second flat key groove, a second connecting structure, a first connecting structure, a second connecting structure, a middle connecting structure, a second connecting structure, a middle piece, a second connecting piece, a mandrel, a first connecting structure, a second dovetail groove, a second connecting structure, a second dovetail joint, a second connecting structure, 14, a second flat key groove, 15 and a through hole.
Detailed Description
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
As shown in fig. 2 to 6, the dovetail coupling of the present invention comprises a first coupling member 1 and a second coupling member 3 connected by an intermediate member 2, and a spindle 4 passing through the first coupling member 1, the intermediate member 2, and the second coupling member 3. The upper surface and the lower surface of the middle part 2 are processed into 90-degree dovetail grooves, the first connecting part 1 and the second connecting part 3 respectively comprise an intermediate connecting structure connected with the middle part 2 and a shaft connecting structure connected with a main shaft or a traction shaft, the intermediate connecting structure and the shaft connecting structure are fixedly connected, preferably in an integrated forming mode, dovetail joints are processed on the surfaces of the intermediate connecting structure, and a flat key groove along the length direction is formed in the shaft connecting structure. In order to realize the installation of the mandrel 4, through holes 15 matched with the diameter of the mandrel 4 are respectively formed in the centers of the first connecting piece 1, the intermediate piece 2 and the second connecting piece 3, and then the mandrel 4 is inserted into the through holes 15 on the first connecting piece 1, the intermediate piece 2 and the second connecting piece 3. And the installation of the coupler is realized.
The structure of the present invention is described in further detail below.
As shown in fig. 7, the intermediate member 2 is a cylindrical structure, a first dovetail groove 7 and a second dovetail groove 12 are respectively processed on two surfaces of the intermediate member 2, and the first dovetail groove 7 and the second dovetail groove 12 are vertically arranged at an angle of 90 degrees; and a through hole 15 is processed at the center of the intermediate member 2 for connection with the mandrel 4. The through hole 15 passes through the centers of the first dovetail groove 7 and the second dovetail groove 12.
As shown in fig. 8 and 9, the first connecting member 1 includes a first intermediate connecting structure 5 and a first shaft connecting structure 6, which are fixedly connected, a first dovetail joint 8 installed in cooperation with a first dovetail groove 7 is processed on the first intermediate connecting structure 5, and a first flat key groove 9 is processed inside the first shaft connecting structure 6 along the length direction of the shaft for connecting with the traction shaft.
The second connecting piece 3 comprises a second middle connecting structure 10 and a second shaft connecting structure 11 which are fixedly connected, a second dovetail tenon 13 which is installed in a matched mode with a second dovetail groove 12 is machined on the second middle connecting structure 10, and a second flat key groove 14 is machined in the second shaft connecting structure 11 along the length direction of the shaft and is used for being connected with the main shaft. Reference may be made to the structure of the first connecting member 1 (fig. 8, 9), or to the exploded view of the coupling (fig. 5).
Through holes 15 are respectively processed in the centers of the first connecting piece 1 and the second connecting piece 3, and the aperture of each through hole 15 is the same as that of the through hole 15 on the intermediate piece 2 and is matched with the diameter of the mandrel 4. The method specifically comprises the following steps: the through-hole 15 of the first connecting member 1 penetrates both the first intermediate connecting structure 5 and the first shaft connecting structure 6. The through hole 15 of the second connecting member 3 extends through both the second intermediate connecting structure 10 and the second shaft connecting structure 11.
During installation, the mandrel 4 passes through the through hole 15 in the center of the first connecting piece 1, the middle piece 2 and the second connecting piece 3 in sequence, and therefore the mandrel is ensured not to be separated from the radial direction.
In the utility model, in order to simplify the processing process and save time and cost, under the condition that the diameters of the main shaft and the traction shaft are the same, the first connecting piece 1 and the second connecting piece 3 can be set to be in the same structure, and the effect of the utility model can be realized.
When the coupler is used, the first connecting piece 1, the middle piece 2 and the second connecting piece 3 are matched with the dovetail groove through the dovetail tenon, and the mandrel 4 penetrates through the through holes 15 on the first connecting piece 1, the middle piece 3 and the second connecting piece 3 to form the coupler. Then connect the main shaft on second connecting piece 3, pull the axle and connect on first connecting piece 1, rotatory power passes through second connecting piece 3, intermediate member 2, first connecting piece 1 from the main shaft and progressively transmits to and pulls the axle, because the contact surface of dovetail is big, has avoided producing wearing and tearing after long-time operation and has influenced equipment normal use.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A dovetail coupling, comprising:
the first connecting piece and the second connecting piece are connected through the intermediate piece;
a mandrel passing through the first connecting piece, the middle piece and the second connecting piece;
dovetail grooves are respectively arranged on two end faces of the intermediate piece, and the dovetail grooves on the two end faces form an angle of 90 degrees with each other;
one end of the first connecting piece and one end of the second connecting piece are respectively provided with a dovetail tenon matched with the dovetail grooves on the two end faces of the middle piece, and the other end of the first connecting piece and the second connecting piece are respectively provided with a flat key groove along the length direction.
2. The coupling of claim 1, wherein: the center of the first connecting piece, the center of the middle piece and the center of the second connecting piece are respectively provided with a through hole, and the mandrel sequentially penetrates through the through hole of the first connecting piece, the through hole of the middle piece and the through hole of the second connecting piece.
3. The coupling of claim 2, wherein: the aperture of the through hole is matched with the diameter of the mandrel.
4. The coupling of claim 1, wherein: the first connecting piece and the second connecting piece respectively comprise a middle connecting structure and a shaft connecting structure which are fixedly connected.
5. The coupling of claim 4, wherein: the end face of the middle connecting structure is provided with a dovetail tenon, and a flat key groove along the length direction is formed in the shaft connecting structure.
6. A coupling according to claim 4 or 5, wherein: the middle connecting structure and the shaft connecting structure are of an integrally formed structure.
7. The coupling according to claim 1 or 2, wherein: the structure of the first connecting piece is the same as that of the second connecting piece.
8. The coupling according to any one of claims 1 to 5, wherein: a first dovetail groove and a second dovetail groove which are 90 degrees to each other are respectively arranged on two end faces of the intermediate piece, a first dovetail tenon matched and connected with the first dovetail groove is arranged at one end of the first connecting piece, and a first flat key groove along the length direction is arranged in the other end of the first connecting piece;
and a second dovetail tenon matched and connected with the second dovetail groove is arranged on one end face of the second connecting piece, and a second flat key groove along the length direction is formed in the other end of the second connecting piece.
9. The coupling of claim 8, wherein: the first connecting piece comprises a first middle connecting structure and a first shaft connecting structure which are fixedly connected, a first dovetail tenon is arranged on the end face of the first middle connecting structure, and a first flat key groove along the length direction is formed in the first shaft connecting structure;
the second connecting piece comprises a second middle connecting structure and a second shaft connecting structure which are fixedly connected, a second dovetail tenon is arranged on the end face of the second middle connecting structure, and a second flat key groove along the length direction is formed in the second shaft connecting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121166442.5U CN215334052U (en) | 2021-05-28 | 2021-05-28 | Dovetail groove type coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121166442.5U CN215334052U (en) | 2021-05-28 | 2021-05-28 | Dovetail groove type coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215334052U true CN215334052U (en) | 2021-12-28 |
Family
ID=79548755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121166442.5U Active CN215334052U (en) | 2021-05-28 | 2021-05-28 | Dovetail groove type coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215334052U (en) |
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2021
- 2021-05-28 CN CN202121166442.5U patent/CN215334052U/en active Active
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