CN103072109B - Anti-overloading torque spanner - Google Patents
Anti-overloading torque spanner Download PDFInfo
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- CN103072109B CN103072109B CN201310019010.5A CN201310019010A CN103072109B CN 103072109 B CN103072109 B CN 103072109B CN 201310019010 A CN201310019010 A CN 201310019010A CN 103072109 B CN103072109 B CN 103072109B
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- spanner
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- extension spring
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Abstract
The invention relates to a bolt fastening tool, in particular to an anti-overloading torque spanner which solves the high cost and other problems of an existing torque spanner. The anti-overloading torque spanner comprises a spanner sleeve (2) and a spanner head (1) with the tail being inserted into the spanner sleeve (2), and the spanner sleeve (2) fixes the spanner head (1) through a positioning pin (7); a tension spring (3) and a hollow handle (5) are also arranged; the tail of the spanner sleeve (2) is inserted into one end of the tension spring (3), and the tail of the spanner sleeve (2) and one end of the tension spring (3) are assembled by interference fit; and the other end of the tension spring (3) is inserted into one end of the handle (5), and the other end of the tension spring (3) and one end of the handle (5) are assembled by interference fit. According to the anti-overloading torque spanner, the design is reasonable, the structure is simple, the condition that the torque reaches a set value is very significantly indicated through the deformation of the spring due to the spring structure, the spanner is enabled not to be damaged after the torque is applied continuously, and the torque is not applied to a bolt continuously.
Description
Technical field
The present invention relates to bolted instrument, be specially a kind of antioverloading torque spanner.
Background technology
Being threaded is connected mode the most general between engineering goods, and the overwhelming majority must tighten, and before bolt being connected to bear service load, is subject in advance the effect of power.Common wrench can not reflect whether pre-fastening moment reaches intuitively, just must use can reflect the torque spanner that moment (moment of torsion) is big or small for meeting need of production.Torque spanner is used for fastening bolt, and high-strength bolt can be divided into two kinds of torque-shear type and large hexangle types, and GB torque-shear type high-strength bolt is tetra-kinds of M16, M20, M22, M24, also has two kinds of M27, the M30 of non-GB now; GB high-strength bolts is that M16, M20, M22, M24, M27, M30 etc. are several.General all wants first just tightly tight eventually again for the fastening of high-strength bolt, and every step all needs there is strict torque demand.The first tight and whole constant torque wrench that tightly all must use of high-strength bolts.
But the expensive cost of current high-precision torque spanner is high, improper use is easy to cause damage, and, reach while setting torque value, " clickly " alarm sound under noisy working environment, cannot significantly point out pre-fastening moment up to standard, user may continue firmly, occurs that moment twisted and caused torque spanner to damage or bolt is crossed the phenomenon of moment.
Therefore, being necessary to invent one can control moment, and cost is low, and can allow very intuitively user feel torque spanner up to standard of moment.
Summary of the invention
The problems referred to above that the present invention exists in order to solve existing torque spanner, provide a kind of antioverloading torque spanner.
The present invention adopts following technical scheme to realize:
A kind of antioverloading torque spanner, comprises that wrench socket and afterbody insert the driving end of described wrench socket (for twisting the head that the part of bolt is driving end), and described wrench socket is by alignment pin back-up wrench head; Also comprise the handle of extension spring and inner hollow, the afterbody of described wrench socket (head that the part of inserting driving end is wrench socket) inserts in one end of extension spring and both adopt interference fit together, the other end of described extension spring be inserted in one end of handle and the two employing interference fit together.
Extension spring (being also tension spring) is the helical spring that bears axial tension, and extension spring is generally all used the manufacture of circular section material, in the time not bearing load, is all and tightly very close to each other between the circle of extension spring and circle.
Moment is that the power of instigating object to rotate is multiplied by the distance of rotating shaft.After extension spring is made, the power of extension spring bending is namely known, and so above-mentioned torque spanner is after making, and the setting moment scope of spanner has also just been determined.
When work, driving end is enclosed within the setting moment (moment of torsion) of carrying out coarse adjustment spanner on bolt by the length in adjusting driving end insertion wrench socket.In the time using torque spanner to tight a bolt, extension spring is because needs transmitting torque also can produce flexural deformation, and in the time that moment values reaches setting moment, it is maximum that extension spring deflection reaches, and makes user cannot continue to apply moment of torsion.Such spring structure utilizes the deflection of spring to indicate very significantly moment of torsion to have reached setting value after moment of torsion reaches, and can ensure that now continuing to apply moment of torsion neither can damage spanner, also can not continue to apply moment of torsion to bolt.And the rigidity of extension spring self also can ensure not reach when setting value at moment of torsion, can continue to apply moment of torsion until reach the torque value of setting, effectively prevent the overload of spanner.
In order to improve the overall precision of spanner, increase again inner regulating spring.
Preferably, also comprise and be placed in regulating spring in extension spring, that can compress or stretch, one end of described regulating spring is fixedly connected with the afterbody of wrench socket, the other end of regulating spring be threaded with the adjusting nut that is placed in the handle other end (being to be threaded with adjusting nut after the other end of regulating spring stretches).
Finely tune the setting torque value of torque spanner by adjusting the length of regulating spring.Turn adjusting nut stretching regulating spring can increase the setting torque value of torque spanner, and principle is that stretching regulating spring is equivalent to compress extension spring, has also just increased the required power of bend tension spring, has increased the setting torque value of torque spanner; Turn adjusting nut compression adjustment spring can reduce the setting torque value of torque spanner, and principle is that compression adjustment spring is equivalent to the extension spring that stretches, and has also just reduced the required power of bend tension spring, has reduced the setting torque value of torque spanner.So reach the object of the setting torque value of fine setting torque spanner.
In addition, torque spanner is after using for a long time, extension spring can produce certain plastic deformation, now also can compensate by adjusting the length (stretching or compression) of regulating spring the amount of plastic deformation of extension spring, extend the service life of torque spanner, improve the service precision of torque spanner.
The present invention is reasonable in design, simple in structure, has solved the problems such as cost that existing torque spanner exists is high, fragile.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
In figure, 1-driving end, 2-wrench socket, 3-extension spring, 4-regulating spring, 5-handle, 6-adjusting nut, 7-alignment pin.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated.
As shown in Figure 1, a kind of antioverloading torque spanner, comprises that wrench socket 2 and afterbody insert the driving end 1 of described wrench socket 2, and described wrench socket 2 is by alignment pin 7 back-up wrench heads 1; Also comprise the handle 5 of extension spring 3 and inner hollow, the afterbody of described wrench socket 2 inserts in one end of extension spring 3 and both adopt interference fit together, the other end of described extension spring 3 be inserted in one end of handle 5 and the two employing interference fit together.
Preferably, also comprise and be placed in regulating spring 4 in extension spring 3, that can compress or stretch, one end of described regulating spring 4 is fixedly connected with the afterbody of wrench socket 2, and the other end of regulating spring 4 is threaded with the adjusting nut (6) that is placed in handle 5 other ends.
When concrete enforcement, one end of regulating spring 4 is a lot of with the mode that the afterbody of wrench socket 2 is fixedly connected with, for example, the rear afterbody that is directly inserted into wrench socket 2 is stretched in one end of regulating spring 4, or the afterbody of wrench socket 2 form one control, one end of regulating spring 4 by interference fit in the afterbody cavity of gloves cylinder 2.
Claims (1)
1. an antioverloading torque spanner, comprises that wrench socket (2) and afterbody insert the driving end (1) of described wrench socket (2), and described wrench socket (2) is by alignment pin (7) back-up wrench head (1); It is characterized in that: the handle (5) that also comprises extension spring (3) and inner hollow, the afterbody of described wrench socket (2) inserts in one end of extension spring (3) and both adopt interference fit together, the other end of described extension spring (3) be inserted in one end of handle (5) and the two employing interference fit together;
Also comprise and be placed in regulating spring (4) in extension spring (3), that can compress or stretch, one end of described regulating spring (4) is fixedly connected with the afterbody of wrench socket (2), and the other end of regulating spring (4) is threaded with the adjusting nut (6) that is placed in handle (5) other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310019010.5A CN103072109B (en) | 2013-01-19 | 2013-01-19 | Anti-overloading torque spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310019010.5A CN103072109B (en) | 2013-01-19 | 2013-01-19 | Anti-overloading torque spanner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103072109A CN103072109A (en) | 2013-05-01 |
| CN103072109B true CN103072109B (en) | 2014-11-05 |
Family
ID=48148909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310019010.5A Active CN103072109B (en) | 2013-01-19 | 2013-01-19 | Anti-overloading torque spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103072109B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201507820A (en) * | 2013-08-30 | 2015-03-01 | Kabo Tool Co | Dual driving ends torque wrench |
| CN112476306A (en) * | 2020-11-20 | 2021-03-12 | 中国电子科技集团公司第二十九研究所 | Be applied to moment spanner of multichannel radio frequency coaxial connector dismouting |
| CN115625664B (en) * | 2022-12-19 | 2023-09-01 | 天津航天机电设备研究所 | Moment spanner for space environment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4897198A (en) * | 1972-03-23 | 1973-12-11 | ||
| FR2584644B1 (en) * | 1985-07-11 | 1987-11-27 | Facom | TORQUE SCREWDRIVER |
| JP3983027B2 (en) * | 2001-10-29 | 2007-09-26 | 株式会社空研 | Torque Wrench |
| FR2860570B1 (en) * | 2003-10-03 | 2006-02-10 | Clesse Ind | DEVICE FOR CONTROLLING A TAP |
| TW201036767A (en) * | 2009-04-06 | 2010-10-16 | Xuan-Ren Chen | Torque adjustment and locking mechanism of torque tool |
| CN203031531U (en) * | 2013-01-19 | 2013-07-03 | 山西大运汽车制造有限公司 | Anti-overloading torque spanner |
-
2013
- 2013-01-19 CN CN201310019010.5A patent/CN103072109B/en active Active
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| Publication number | Publication date |
|---|---|
| CN103072109A (en) | 2013-05-01 |
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| ASS | Succession or assignment of patent right |
Owner name: CHENGDU DAYUN AUTOMOTIVE GROUP COMPANY LIMITED Free format text: FORMER OWNER: SHANXI DAYUN AUTOMOBILE MANUFACTURING CO., LTD. Effective date: 20140923 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Hao Zewei Inventor after: Chen Gaoli Inventor after: Liu Baoqian Inventor after: Li Huaxin Inventor before: Yang Leigang Inventor before: Wang Wanying Inventor before: Liu Wei Inventor before: Hao Zewei |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: YANG LEIGANG WANG WANYING LIU WEI HAO ZEWEI TO: HAO ZEWEI CHEN HAOLI LIU BAOQIAN LI HUAXIN Free format text: CORRECT: ADDRESS; FROM: 044000 YUNCHENG, SHAANXI PROVINCE TO: 610105 CHENGDU, SICHUAN PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20140923 Address after: 8 No. 610105 Sichuan city in Chengdu province city of Chengdu economic and Technological Development Zone Avenue Applicant after: Chengdu Co., Ltd of great Yun automobile group Address before: 044000 Shanxi province Yuncheng City Airport Tongda Road No. 8 Applicant before: Shanxi Dayun Automobile Manufacture Company |
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| C14 | Grant of patent or utility model | ||
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Leigang Inventor after: Wang Wanying Inventor after: Liu Wei Inventor after: Hao Zewei Inventor after: Chen Gaoli Inventor after: Liu Baoqian Inventor after: Li Huaxin Inventor before: Hao Zewei Inventor before: Chen Gaoli Inventor before: Liu Baoqian Inventor before: Li Huaxin |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: HAO ZEWEI CHEN HAOLI LIU BAOQIAN LI HUAXIN TO: YANG LEIGANG WANG WANYING LIU WEI HAO ZEWEI CHEN HAOLI LIU BAOQIAN LI HUAXIN |