CN208474306U - A kind of washer arrangement detecting bolt looseness - Google Patents
A kind of washer arrangement detecting bolt looseness Download PDFInfo
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- CN208474306U CN208474306U CN201820915680.3U CN201820915680U CN208474306U CN 208474306 U CN208474306 U CN 208474306U CN 201820915680 U CN201820915680 U CN 201820915680U CN 208474306 U CN208474306 U CN 208474306U
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- washer
- sensing element
- detection
- bolt looseness
- fixed shell
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Abstract
A kind of washer arrangement being able to detect bolt looseness is made of components such as saucer washer, fixed shell, detection contact, sensing element, adjusting screw, lead and detection modules.Saucer washer has two panels, opposite to be stacked together, and connect in outer edge with fixed shell；What saucer washer stacked relatively is formed with groove on one side；Detection contact is placed in the groove of saucer washer, the other end for detecting contact is extend into fixed shell to be contacted with sensing element；The back of sensing element is equipped with adjusting screw, and sensing element generates signal and is connected in detection module by lead.
Description
Technical field
The present invention relates to a kind of devices for being able to detect bolt tight condition, can especially identify the pad of bolt looseness state
Circle.
Background technique
Bolt looseness is the common phenomenon of engineering field, current detection method mainly angled monitoring method, screw-down torque
The methods of detection method, the monitoring of bolt axial force sensor and the monitoring of pressure disc sensor, wherein related to the present invention is pressure
Power washer sensor method.Existing pressure disc sensor can be divided into two classes: one kind is gasket type load cell, generally
It is made of components such as annular elastomeric, shell, strain gauge, pigtail splices, strain gauge usually constitutes Huygens's electric bridge, has four to draw
The characteristics of line, the detection device of rear end are strain gauge dynamometer, this kind of pressure disc sensor be large carrying capacity, precision it is high,
Can continuous monitoring bolt prefastening load situation of change, but due to size is big, thickness is thick, the influence to bolt fastening structure compared with
Greatly, along with use cost is high, it is difficult to which large-scale application is usually applicable only to small-scale or provisional testing inspection field.
Another kind of is diaphragm pressure washer, is generally printed by film substrate and conductive coating, its main feature is that thickness is thin, cost
It is low, but bearing capacity is also small simultaneously, and stability, repeatability and environmental suitability etc. are poor, are usually applicable only to robot
The fields such as sense of touch detection, consumer electronics.
Summary of the invention
In order to overcome existing pressure disc sensor bearing capacity and thickness, detection accuracy and use cost it
Between contradiction, the present invention provides a kind of washer arrangement for being able to detect bolt looseness, and not only bearing capacity is very big for the washer, but also
Thinner thickness, compact dimensions can substitute common plain washer and use.In addition, common plain washer is compared, pad of the present invention
Coil apparatus, which not only has, actively loosens detectability, also has certain passive anti-loose ability, due to being based on switching value, makes
With at low cost, stability, repeatability and good environmental adaptability are very suitable to large-scale application.
The technical solution adopted by the present invention to solve the technical problems is: a kind of washer arrangement detecting bolt looseness, by
The components compositions such as saucer washer, fixed shell, detection contact, sensing element, adjusting screw, lead and detection module.Dish
Washer has two panels, opposite to be stacked together, and connect in outer edge with fixed shell；What saucer washer stacked relatively is formed on one side
Groove；Detection contact is placed in the groove of saucer washer, the other end for detecting contact is extend into fixed shell and sensitivity member
Part contact；The back of sensing element is equipped with adjusting screw.Adjusting screw is used to adjust the sensitivity of sensing element, can be to difference
Bolt tightness respond.When bolt is tightened, the gap of saucer washer inner ring becomes smaller, detection trigger contact, transmitting
To after sensing element, signal is tightened in sensing element generation；Conversely, the gap of saucer washer inner ring becomes larger when bolt looseness, release
Contact is detected, after being transmitted to sensing element, sensing element, which generates, loosens signal, and the sensing element generates signal and connects by lead
It is connected in detection module.
The invention has the advantages that easy for installation, large carrying capacity, compact-sized, size is small using beadlike form,
Bolt arrangement is not destroyed, in addition to can be with the elastic state of active detecting bolt, used saucer washer also has preferable passive
Anti-loosing effect.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is structural schematic diagram of the invention.
Fig. 2, Fig. 3 are the schematic diagrames of one embodiment of the invention.
Fig. 4, Fig. 5 are the schematic diagrames of second embodiment of the invention.
1, saucer washer in figure, 2, fixed shell, 3, detection contact, 4, sensing element, 5, adjustment stud, 6, lead, 7,
Detection module.
Specific embodiment
In the preferred embodiment shown in Fig. 2, Fig. 3, fixed shell (2) be it is ring-like, two saucer washers (1) pass through nesting
It is placed in fixed shell (2), one end of detection contact (3) is placed in the groove between two saucer washers (1), detection touching
The other end of piece (3) reaches in fixed shell (2), contacts with sensing element (4), and adjustment stud (5) is located at sensing element (4)
Back.In this example, sensing element (4) selects touch-switch, and after bolt is tightened, touch-switch is connected, after bolt looseness, gently
Touching switch disconnects, and touch-switch is connected to detection module (7) by lead (6).
In the preferred embodiment shown in Fig. 4, Fig. 5, fixed shell (2) are square, two saucer washers (1) and set casing
By being welded together, one end of detection contact (3) is placed in the groove between two saucer washers (1) body (2), is examined
The other end for surveying contact (3) reaches in fixed shell (2), contacts with sensing element (4), and adjustment stud (5) is located at sensing element
(4) back.In this example, sensing element (4) selects touch-switch, and after bolt is tightened, touch-switch is connected, and works as bolt looseness
Afterwards, touch-switch disconnects, and touch-switch is connected to detection module (7) by lead (6).
Claims (4)
1. a kind of washer arrangement for detecting bolt looseness, by saucer washer, fixed shell, detection contact, sensing element, adjustment spiral shell
The components such as nail, lead and detection module composition, it is characterized in that: saucer washer has two panels, it is opposite to be stacked together, in outer edge
Place is connect with fixed shell.
2. the washer arrangement of detection bolt looseness according to claim 1, it is characterized in that: opposite one stacked of saucer washer
Wheat flour is fluted.
3. the washer arrangement of detection bolt looseness according to claim 2, it is characterized in that: being placed in the groove of saucer washer
There is detection contact, the other end for detecting contact is extend into fixed shell to be contacted with sensing element.
4. the washer arrangement of detection bolt looseness according to claim 3, it is characterized in that: the back of sensing element is equipped with
Adjusting screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820915680.3U CN208474306U (en) | 2018-06-15 | 2018-06-15 | A kind of washer arrangement detecting bolt looseness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820915680.3U CN208474306U (en) | 2018-06-15 | 2018-06-15 | A kind of washer arrangement detecting bolt looseness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208474306U true CN208474306U (en) | 2019-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820915680.3U Active CN208474306U (en) | 2018-06-15 | 2018-06-15 | A kind of washer arrangement detecting bolt looseness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208474306U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612732A (en) * | 2018-06-15 | 2018-10-02 | 王健志 | A kind of washer arrangement of detection bolt looseness |
-
2018
- 2018-06-15 CN CN201820915680.3U patent/CN208474306U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612732A (en) * | 2018-06-15 | 2018-10-02 | 王健志 | A kind of washer arrangement of detection bolt looseness |
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