CN211422899U - Special-shaped key for connecting driving gear of viscose metering pump - Google Patents
Special-shaped key for connecting driving gear of viscose metering pump Download PDFInfo
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- CN211422899U CN211422899U CN201922028915.4U CN201922028915U CN211422899U CN 211422899 U CN211422899 U CN 211422899U CN 201922028915 U CN201922028915 U CN 201922028915U CN 211422899 U CN211422899 U CN 211422899U
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- connecting block
- driving gear
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Abstract
The utility model relates to a special-shaped key for driving gear connection of viscose measuring pump, including key body (1), its appearance is "protruding" word shape, and its front and back both sides face is parallel, and it is the bilateral symmetry body, and it is provided with down long connecting block (11) and last short connecting block (12), and its junction is the circular arc transition, and the shape of lower long connecting block (11) and last short connecting block (12) is half circular shape, and front and back both sides face edge is equipped with the chamfer, the utility model discloses simple structure is novel, and the function is practical, is applicable to the connection of the slim driving gear of viscose measuring pump, and firm in connection, the transmission is steady.
Description
Technical Field
The utility model relates to a viscose measuring pump, concretely relates to a special-shaped key for viscose measuring pump driving gear connection.
Background
The viscose measuring pump is chemical fibre textile machinery's core part, viscose measuring pump compact structure, occupation space is little, the viscose measuring pump mainly comprises the pump body, the apron, the driving shaft, the driving gear, the driven shaft, driven gear and sealing member, the driving gear thickness size of viscose measuring pump is little, generally about 2mm ~ 4mm, the driving gear of current viscose measuring pump mainly adopts two kinds of modes with being connected of driving shaft, one kind is the cylindric lock connection, another kind is the flat key connection, these two kinds of connected modes all have following weak point: when the cylindrical pin is used for connection, pin holes need to be drilled in the longitudinal direction of the driving gear, and the diameter of each pin hole needs to be smaller than the thickness of the driving gear, so that the cylindrical pin is very small, the contact area between the cylindrical pin and the driving gear is small, and the connection and transmission of the driving gear are not firm and stable enough; when adopting the parallel key to connect, the parallel key is small-size non-standard parallel key, because viscose measuring pump compact structure, on axial direction, the parallel key can not surpass the driving gear, otherwise can influence the installation of other parts, consequently, the length of parallel key must be less than driving gear thickness, causes the keyway on the driving shaft very little, and very difficult processing, small-size non-standard parallel key processing degree of difficulty is great, difficult installation, and the transmission is not too steady.
Disclosure of Invention
The utility model aims to solve the not enough of prior art existence, provide a special-shaped key for viscose measuring pump driving gear connection, simple structure is novel, and the function is practical, is applicable to the connection of the slim driving gear of viscose measuring pump, firm in connection, and the transmission is steady.
The utility model adopts the technical proposal that: the utility model provides a special-shaped key for viscose measuring pump driving gear connection, including key body 1, its appearance is "protruding" word shape, its front and back both sides face is parallel, it is for controlling the symmetric body, it is provided with down long connecting block 11 and last short connecting block 12, its junction is the circular arc transition, the shape of lower long connecting block 11 and last short connecting block 12 is the semicircle form, be equipped with the chamfer on the both sides face edge of front and back, when the user state, lower long connecting block 11 inserts in the axle keyway, it inserts in the hole keyway to go up short connecting block 12.
In a further improvement, the lower long connecting block 11 and the upper short connecting block 12 are rectangular.
Compared with the prior art, the utility model following beneficial effect has: simple structure is novel, and the function is practical, is applicable to the connection of the slim driving gear of viscose measuring pump, firm in connection, and the transmission is steady.
Drawings
Figure 1 is a schematic structural diagram of the present invention,
figure 2 is a left side view of figure 1,
fig. 3 is a schematic view of the installation structure of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.
As shown in fig. 1 and 2, a special-shaped key for driving gear connection of a viscose metering pump, which comprises a key body 1, wherein the appearance of the key body is in a shape like a Chinese character 'tu', the front side surface and the rear side surface of the key body are parallel, the key body is symmetrical left and right, the key body is provided with a lower long connecting block 11 and an upper short connecting block 12, the joint of the lower long connecting block 11 and the upper short connecting block 12 is in circular arc transition, the lower long connecting block 11 and the upper short connecting block 12 are in a semicircular shape, chamfers are arranged on the front side surface and the rear side surface, when the key is in use, the lower long connecting.
In order to expand the application range and improve the universality, the shape of the lower long connecting block 11 and the upper short connecting block 12 is rectangular.
As shown in figure 3, when the special-shaped key is used, the lower long connecting block 11 is inserted into the shaft key groove of the driving shaft, the upper short connecting block 12 is inserted into the hole key groove of the driving gear, and the structural design of the special-shaped key with the lower long part and the upper short part not only increases the connecting contact area of the key and the driving shaft, but also enables the shaft key groove of the driving shaft to be easily processed, meets the requirement that the key cannot exceed the installation structure of the driving gear, can improve the connection reliability of the driving gear and the driving shaft, and can ensure the driving gear transmission stability; the lower long connecting block 11 and the upper short connecting block 12 are in a semicircular shape, the connecting part of the lower long connecting block and the upper short connecting block is in arc transition, and chamfers are arranged on the front side face and the rear side face, so that the connecting strength and the installation convenience of the special-shaped key can be improved.
Without being limited thereto, any changes or substitutions which are not thought of through creative efforts should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (2)
1. The utility model provides a special-shaped key for viscose measuring pump driving gear connection, a serial communication port, including key body (1), its appearance is "protruding" word shape, its front and back both sides face is parallel, it is the symmetry body about, it is provided with down long connecting block (11) and last short connecting block (12), its junction is the circular arc transition, the shape of lower long connecting block (11) and last short connecting block (12) is the semicircle shape, be equipped with the chamfer on the front and back both sides face edge, when user state, lower long connecting block (11) insert in the axle keyway, it inserts in the hole keyway to go up short connecting block (12).
2. The special key for the driving gear connection of the adhesive metering pump according to claim 1, wherein the lower long connecting block (11) and the upper short connecting block (12) are rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922028915.4U CN211422899U (en) | 2019-11-15 | 2019-11-15 | Special-shaped key for connecting driving gear of viscose metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922028915.4U CN211422899U (en) | 2019-11-15 | 2019-11-15 | Special-shaped key for connecting driving gear of viscose metering pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211422899U true CN211422899U (en) | 2020-09-04 |
Family
ID=72254255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922028915.4U Active CN211422899U (en) | 2019-11-15 | 2019-11-15 | Special-shaped key for connecting driving gear of viscose metering pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211422899U (en) |
-
2019
- 2019-11-15 CN CN201922028915.4U patent/CN211422899U/en active Active
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