CN215789511U - Labor-saving nut tightening tool - Google Patents
Labor-saving nut tightening tool Download PDFInfo
- Publication number
- CN215789511U CN215789511U CN202120766582.XU CN202120766582U CN215789511U CN 215789511 U CN215789511 U CN 215789511U CN 202120766582 U CN202120766582 U CN 202120766582U CN 215789511 U CN215789511 U CN 215789511U
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- CN
- China
- Prior art keywords
- gear
- gear shaft
- locking nut
- nut
- assembly workpiece
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- 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.)
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Abstract
The nut tightening labor-saving tool at least comprises a locking nut, wherein an inner ring of the locking nut is in threaded connection with an outer ring of a stepped cylindrical assembly workpiece, a gear disc is horizontally and fixedly arranged at the top of the assembly workpiece, a gear of a gear shaft is meshed with the gear disc, the end face of the top end of the gear shaft is a polygonal hole, the bottom of the gear shaft is inserted into a pin hole of the locking nut, and the bottom of the gear shaft is in clearance fit with the pin hole of the locking nut. The gear shaft moves around the gear disc to drive the locking nut to move around the assembly workpiece, the locking nut presses the workpiece needing pre-tightening downwards, and pre-tightening force can be greatly reduced according to the gear ratio of the gear disc to the gear shaft.
Description
Technical Field
The utility model relates to a labor-saving tool for nut tightening, and belongs to the technical field of mechanical tools.
Background
The structure of the tapered roller bearing is pre-tightened by adopting the locking nut, the groove on the outer circumference of the nut is rotated by a tool in the traditional method, the operation space is limited, the operation is more laborious, the phenomenon of thread knocking deformation can occur in the process, and the installation of precision equipment is not facilitated.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provides a nut screwing labor-saving tool which can quickly and labor-saving screw nuts and does not deform threads.
The technical scheme adopted by the utility model for realizing the purpose is as follows: the locking nut is arranged on the inner ring of the locking nut, the inner ring of the locking nut is in threaded connection with the outer ring of the stepped cylindrical assembly workpiece, the gear disc is horizontally and fixedly installed at the top of the assembly workpiece, a gear of the gear shaft is meshed with the gear disc, the end face of the top end of the gear shaft is a polygonal hole, the bottom of the gear shaft is inserted into a pin hole of the locking nut, and the bottom of the gear shaft is in clearance fit with the pin hole of the locking nut.
According to the technical scheme, the middle part of the gear disc is provided with the bulge matched with the middle part of the assembly workpiece through the axial through hole, and the gear disc and the assembly workpiece are fixed together through the seam allowance and the spline.
In the technical scheme, the end face of the top end of the gear shaft is in a regular hexagon shape.
The technical scheme provided by the utility model has the beneficial effects that:
according to the technical scheme, the locking nut is sleeved on the assembly workpiece, the gear disc fixed to the top of the assembly workpiece is meshed with the gear shaft, the top of the gear shaft is provided with the polygonal hole, the gear shaft is driven to rotate through the pneumatic wrench to generate telemechanical motion around the circumference of the gear disc, and the locking nut presses down to lock an object to be pre-tightened and sleeved on the assembly workpiece in the process.
Drawings
Fig. 1 is a schematic structural view of the nut tightening labor-saving tool of the present invention.
In the figure: 1. a gear plate; 2. a gear shaft; 3. locking the nut; 4. a tapered roller bearing; 5. assembling a workpiece; 6. a cylinder.
Detailed Description
The utility model is further described with reference to the accompanying drawings and specific embodiments.
As shown in figure 1, the nut tightening labor-saving tool at least comprises a locking nut 3, wherein an inner ring of the locking nut 3 is in threaded connection with an outer ring of a stepped cylindrical assembly workpiece 5, the locking nut 3 can move downwards when rotating on the assembly workpiece 5, a gear disc 1 is horizontally and fixedly arranged at the top of the assembly workpiece 5, a bulge in the middle of the gear disc 1 is matched with an axial through hole formed in the middle of the assembly workpiece 5, the gear disc 1 and the assembly workpiece 5 are fixed together through a spigot and a spline, a gear of a gear shaft 2 is meshed with the gear disc 1, the gear shaft 2 is provided with a module of 5 and a gear number of 9, the gear disc 1 is provided with a module of 5 and a gear number of 72, the end face of the top end of the gear shaft 2 is provided with a regular hexagonal hole, the bottom of the gear shaft 2 is inserted into a pin hole of the locking nut 3, and the bottom of the gear shaft 2 is in clearance fit with a pin hole of the locking nut 3.
The working process is that after the device is assembled, the inner ring of the tapered roller bearing 4 is sleeved on the outer ring of the assembly workpiece 5 and is positioned at the lower part of the locking nut 3, a cylinder 6 is padded between the two tapered roller bearings 4 used in pairs, the inner ring of the cylinder 6 is sleeved on the outer ring of the assembly workpiece 5, the cylinder 6 is made of No. 45 steel, a pneumatic wrench is used for matching with a regular hexagonal hole at the top end of the gear shaft 2, the pneumatic wrench is started, the gear shaft 2 is driven to rotate by the pneumatic wrench, the gear of the gear shaft 2 is meshed with the gear disc 1 to generate circumferential motion around the gear disc 1, the gear shaft 2 is in clearance fit with the locking nut 3, the locking nut 3 generates circumferential motion around the assembly workpiece 5 when the gear shaft 2 rotates, the locking nut 3 moves downwards through threads between the locking nut 3 and the assembly workpiece 5, pre-tightening is realized when the tapered roller bearings 4 are pressed, the gear ratio of the gear disc 1 to the gear shaft 2 is 8:1, the force used is only one eighth, which is very labor-saving and does not hurt the device.
Claims (3)
1. The utility model provides a laborsaving instrument of nut tightening, includes lock nut at least, its characterized in that: the inner ring of the locking nut is connected with the outer ring of the stepped cylindrical assembly workpiece through threads, the gear disc is horizontally and fixedly installed at the top of the assembly workpiece, a gear of the gear shaft is meshed with the gear disc, the end face of the top end of the gear shaft is a polygonal hole, the bottom of the gear shaft is inserted into the pin hole of the locking nut, and the bottom of the gear shaft is in clearance fit with the pin hole of the locking nut.
2. The nut tightening labor-saving tool according to claim 1, characterized in that: the middle bulge of the gear disc is matched with the middle part of the assembly workpiece through an axial through hole, and the gear disc and the assembly workpiece are fixed together through a spigot and a spline.
3. The nut tightening labor-saving tool according to claim 1, characterized in that: the end face of the top end of the gear shaft is in a regular hexagon shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120766582.XU CN215789511U (en) | 2021-04-15 | 2021-04-15 | Labor-saving nut tightening tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120766582.XU CN215789511U (en) | 2021-04-15 | 2021-04-15 | Labor-saving nut tightening tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215789511U true CN215789511U (en) | 2022-02-11 |
Family
ID=80171214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120766582.XU Active CN215789511U (en) | 2021-04-15 | 2021-04-15 | Labor-saving nut tightening tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215789511U (en) |
-
2021
- 2021-04-15 CN CN202120766582.XU patent/CN215789511U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |