CN202789889U - Manual unlocking device used for piston rod locking device - Google Patents
Manual unlocking device used for piston rod locking device Download PDFInfo
- Publication number
- CN202789889U CN202789889U CN 201220381680 CN201220381680U CN202789889U CN 202789889 U CN202789889 U CN 202789889U CN 201220381680 CN201220381680 CN 201220381680 CN 201220381680 U CN201220381680 U CN 201220381680U CN 202789889 U CN202789889 U CN 202789889U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- rod locking
- locking device
- manual unlocking
- conversion adapter
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a manual unlocking device used for a piston rod locking device and aims at providing the manual unlocking device used for unlocking the piston rod locking device, wherein a joint of the piston rod locking device is provided with taper threads. The manual unlocking device used for the piston rod locking device comprises a rotary joint. The taper threads are arranged on the outer wall of the rotary joint, straight threads are arranged on the inner wall of the rotary joint, a screw which is in threaded connection with the rotary joint is arranged in the rotary joint, and a screw rod portion of the screw is located at a small end of the rotary joint. The manual unlocking device used for the piston rod locking device has the advantages that under the condition that the joint is provided with the taper threads, manual unlocking is achieved, and the manual unlocking device used for the piston rod locking device is suitable to be popularized and applied.
Description
Technical field
The utility model relates to a kind of tripper, relates in particular to a kind of manual unlocking device for piston rod locking device.
Background technique
Piston rod locking device as shown in Figure 1, this structure struts two chuck b by spring a, makes chuck b endoporus hole along locking because of unbalance loading with piston rod c surface.Under normal circumstances, in the ventilation of interface d place, thereby press down piston e, finish as shown in Figure 2 release.Under some occasion, need to carry out manual unlocking to this structure, as shown in Figure 3, interface d only in the situation of straight thread, just can make screw f continue to be screwed into, and interface d is in the situation of tapered thread, then can't directly use screw f release, have significant limitation.
The model utility content
It is the manual unlocking device of tapered thread for separating lock interface that the purpose of this utility model is to provide a kind of, is in the situation of tapered thread to solve the interface that exists in the background technique, can't directly use the problem of screw release.
To achieve these goals, the technical solution of the utility model is: a kind of manual unlocking device for piston rod locking device, comprise conversion adapter, the outer wall of conversion adapter is provided with tapered thread, the inwall of conversion adapter is provided with straight thread, be provided with the screw that is threaded with it in the described conversion adapter, the bar section of described screw be positioned at conversion adapter than small end.The mentality of designing of this technological scheme is: design one has the conversion adapter of tapered thread, is installed on the interface of piston rod locking device, and the internal thread of conversion adapter then is designed to straight thread, thereby so just can continue to be screwed into screw release piston rod locking device.
As preferably, the inwall of the larger end of described conversion adapter is provided with hexagon ring.This hexagon ring is that conversion adapter is installed on the interface of piston rod locking device.
The beneficial effect that the utility model is used for the manual unlocking device of piston rod locking device is: be in the situation of tapered thread at interface, realized manual unlocking.
Description of drawings
Fig. 1 is the locking state of piston rod locking device;
Fig. 2 is the released state of piston rod locking device;
Fig. 3 is that interface is the release schematic representation of straight thread;
Fig. 4 is a kind of structural representation of the utility model manual unlocking device of being used for piston rod locking device;
Fig. 5 is the structural representation of conversion adapter;
Fig. 6 is the use view that the utility model is used for piston rod locking device.
Number in the figure is respectively: 1. conversion adapter 2. screws.
Embodiment
Also by reference to the accompanying drawings the technical solution of the utility model is further described specifically below by embodiment.
Embodiment:
A kind of manual unlocking device for piston rod locking device, shown in Fig. 4 to 5, comprise conversion adapter 1, the outer wall of conversion adapter 1 is provided with tapered thread, the inwall of conversion adapter 1 is provided with straight thread, the inwall of the larger end of described conversion adapter 1 is provided with hexagon ring, is provided with the screw 2 that is threaded with it in the described conversion adapter 1, the bar section of described screw 2 be positioned at conversion adapter 1 than small end.
During use, as shown in Figure 6, conversion adapter 1 usefulness inner hexagon spanner is installed on the interface of piston rod locking device, the internal thread of conversion adapter then is designed to straight thread, thereby so just can continue to be screwed into screw 2 release piston rod locking devices.
Above-mentioned described specific embodiment only is that the preferable examples explanation is done in design of the present utility model.All any modifications of making within spirit of the present utility model and principle or replenish or be equal to alternatively all should be included within the protection domain of the utility model claim.
Claims (2)
1. manual unlocking device that is used for piston rod locking device, it is characterized in that: comprise conversion adapter (1), the outer wall of conversion adapter (1) is provided with tapered thread, the inwall of conversion adapter (1) is provided with straight thread, be provided with the screw (2) that is threaded with it in the described conversion adapter (1), the bar section of described screw (2) be positioned at conversion adapter (1) than small end.
2. the manual unlocking device for piston rod locking device according to claim 1, it is characterized in that: the inwall of the larger end of described conversion adapter (1) is provided with hexagon ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220381680 CN202789889U (en) | 2012-08-03 | 2012-08-03 | Manual unlocking device used for piston rod locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220381680 CN202789889U (en) | 2012-08-03 | 2012-08-03 | Manual unlocking device used for piston rod locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789889U true CN202789889U (en) | 2013-03-13 |
Family
ID=47817155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220381680 Expired - Lifetime CN202789889U (en) | 2012-08-03 | 2012-08-03 | Manual unlocking device used for piston rod locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789889U (en) |
-
2012
- 2012-08-03 CN CN 201220381680 patent/CN202789889U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |