CN217292182U - Internal thread locating pin pretension hammering type pin puller - Google Patents
Internal thread locating pin pretension hammering type pin puller Download PDFInfo
- Publication number
- CN217292182U CN217292182U CN202220415448.XU CN202220415448U CN217292182U CN 217292182 U CN217292182 U CN 217292182U CN 202220415448 U CN202220415448 U CN 202220415448U CN 217292182 U CN217292182 U CN 217292182U
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- CN
- China
- Prior art keywords
- pin
- connecting screw
- pin pulling
- screw rod
- rod
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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.)
- Expired - Fee Related
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- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
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Abstract
The utility model discloses an internal thread locating pin pretension hammering type pin puller, which comprises a pin pulling rod, a base fixedly connected with the upper end of the pin pulling rod, and a connecting screw rod connected with the lower end of the pin pulling rod, wherein the lower end of the connecting screw rod is provided with a pin pulling thread; the connecting screw is sleeved with a bearing cushion block, and a stepped hole with a small upper part and a large lower part is arranged in the bearing cushion block; and an impact hammer is sleeved outside the pin pulling rod below the base. The utility model discloses can overcome serious bite, extract the locating pin smoothly, and convenient operation, laborsaving can improve the work efficiency.
Description
Technical Field
The utility model relates to a pin puller, especially a pretension hammering formula pin puller for internal thread locating pin.
Background
The positioning pin is used for ensuring accurate positioning between the two machine parts; as shown in fig. 1, when the two components are mounted in place, the positioning pin 9 is first installed, and the positioning pin 9 is mounted in cooperation with the twisted positioning hole. The general positioning pin has small tightening force and can be pulled out easily by adopting a bolt; however, the positioning pin 9 is poor in working environment and serious in corrosion, or the two machine parts are seriously staggered and are severely jammed, so that the positioning pin needs large force for taking out, and the existing tool is difficult to realize.
Disclosure of Invention
The utility model aims at the above-mentioned not enough that prior art exists, provide an internal thread locating pin pretension formula hammering formula pin puller, it can overcome serious bite, extract the locating pin smoothly, and convenient operation, laborsaving, can improve the work efficiency.
In order to achieve the purpose, the hammer pin puller with the pretension force for the internal thread positioning pin comprises a pin pulling rod, a base fixedly connected to the upper end of the pin pulling rod, and a connecting screw rod connected with the lower end of the pin pulling rod, wherein the lower end of the connecting screw rod is provided with a pin pulling thread; the connecting screw rod is connected with a pre-tensioning nut through a pin pulling thread, a bearing cushion block is sleeved outside the connecting screw rod below the pre-tensioning nut, and a stepped hole with a small upper part and a large lower part is arranged in the bearing cushion block; an impact hammer is sleeved outside the pin pulling rod below the base;
when the positioning pin pulling device is used, the pin pulling threads are screwed into the positioning pin firstly, then the pre-tensioning nut is rotated downwards, the pre-tensioning nut applies pre-tensioning force to the positioning pin through the bearing cushion block, and if the pre-tensioning force of the positioning pin is smaller, the positioning pin can be pulled out through the pre-tensioning nut; if the locating pin is seriously jammed and has large tightening force, the base can be hammered upwards by adopting an impact hammer, the locating pin can be smoothly pulled out by matching the pretensioning force of the nut with the hammering impact force, the operation is convenient and labor-saving, and the work efficiency can be improved;
as a further improvement of the utility model, the connecting screw rod is connected with the lower end of the pin pulling rod through a connecting thread at the upper end; the connecting screw rod can be replaced to be suitable for positioning pins with different apertures, so that the universality is improved;
to sum up, the utility model discloses can overcome serious bite, extract the locating pin smoothly, and convenient operation, laborsaving can improve the work efficiency.
Drawings
Fig. 1 is a view showing a state of use of a conventional dowel.
Fig. 2 is a front view of the embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 2, the hammering type pin puller with the pretension force for the internal thread positioning pin of the embodiment comprises a pin pulling rod 1, a base 2 fixedly connected to the upper end of the pin pulling rod, and a connecting screw rod 3 connected with the lower end of the pin pulling rod 1 through a connecting thread 4 at the upper end thereof, wherein a pin pulling thread 5 is arranged at the lower end of the connecting screw rod 3; the connecting screw rod 3 is connected with a pre-tensioning nut 6 through a pin pulling thread 5, a bearing cushion block 7 is sleeved outside the connecting screw rod 3 below the pre-tensioning nut 6, and a stepped hole with a small upper part and a large lower part is arranged in the bearing cushion block 7; an impact hammer 8 is sleeved outside the pin pulling rod 1 below the base 2;
when in use, the inner diameter below the stepped hole of the bearing cushion block 7 is larger than the outer diameter of the positioning pin 9; the pin pulling thread 5 is firstly screwed into the positioning pin 9, then the pre-pulling nut 6 is rotated downwards, the pre-pulling nut 6 applies pre-pulling force to the positioning pin 9 through the bearing cushion block 7, and if the pre-pulling force of the positioning pin is smaller, the positioning pin 9 can be pulled out through the pre-pulling nut 6; if the positioning pin is seriously stuck and the tightening force is large, the impact hammer 8 can be adopted to hammer the base 2 upwards, the positioning pin 9 can be pulled out smoothly by matching the pretensioning force of the nut with the hammering impact force, the operation is convenient, the labor is saved, and the work efficiency can be improved; the replaceable connecting screw rod 3 can be suitable for positioning pins 9 with different apertures, and the universality is improved.
Claims (2)
1. A pre-tension hammering type pin puller for an internal thread positioning pin comprises a pin pulling rod, a base fixedly connected to the upper end of the pin pulling rod, and a connecting screw rod connected with the lower end of the pin pulling rod, wherein a pin pulling thread is arranged at the lower end of the connecting screw rod; the connecting screw rod is connected with a pre-tensioning nut through a pin pulling thread, a bearing cushion block is sleeved outside the connecting screw rod below the pre-tensioning nut, and a stepped hole with a small upper part and a large lower part is arranged in the bearing cushion block; and an impact hammer is sleeved outside the pin pulling rod below the base.
2. The internal threaded dowel pre-tension hammering pin puller of claim 1, wherein the connecting screw is coupled to the lower end of the pin puller via the connecting thread at the upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220415448.XU CN217292182U (en) | 2022-02-28 | 2022-02-28 | Internal thread locating pin pretension hammering type pin puller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220415448.XU CN217292182U (en) | 2022-02-28 | 2022-02-28 | Internal thread locating pin pretension hammering type pin puller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217292182U true CN217292182U (en) | 2022-08-26 |
Family
ID=82933556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220415448.XU Expired - Fee Related CN217292182U (en) | 2022-02-28 | 2022-02-28 | Internal thread locating pin pretension hammering type pin puller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217292182U (en) |
-
2022
- 2022-02-28 CN CN202220415448.XU patent/CN217292182U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220826 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |