CN103163311B - Detection clamp and detection method special for action acceleration of overload switch - Google Patents
Detection clamp and detection method special for action acceleration of overload switch Download PDFInfo
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- CN103163311B CN103163311B CN201110404898.5A CN201110404898A CN103163311B CN 103163311 B CN103163311 B CN 103163311B CN 201110404898 A CN201110404898 A CN 201110404898A CN 103163311 B CN103163311 B CN 103163311B
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Abstract
The invention provides a detection clamp special for an overload switch action acceleration and a detection method. The special detection clamp comprises a base, a push rod, a top rod, a spring, a fixing cover and a hand shank. The base is provided with a positioning step on which the acceleration overload switch is installed, a threaded installation hole is formed on one side of the base, and the spring is placed on the top rod in a sleeved mode. After abutted, the fixing cover and the hand shank extend into a threaded hole on one side of the base and are fixed with the side wall, and one end of the push rod is fixedly connected to a corresponding position of a spring tensile and compression testing machine, perpendicular to the acceleration overload switch on the base, and coaxial with an overload sensitive mechanism of the acceleration overload switch. The detection method comprises the steps: through the above special detection clamp, detecting a resistance value to the overload switch sensitive mechanism at the locking moment, converting as a thrust F generated by external overload to the overload sensitive mechanism, and calculating an action acceleration value corresponding to the overload switch according to a formula a=F/m=F<resistance>/m. The detection method of the invention replaces a tradition detection method that the acceleration value is measured by a shock testing machine. The detection clamp and the detection method of the invention has simple and fast characteristics, and realize high-efficient and practical detection effects.
Description
Technical field
The present invention relates to a kind of acceleration overload switch motion acceleration detection dedicated test fixture and detection method, belong to switch control element field, the action acceleration being applicable to having large impact acceleration overload switch detects.
Background technology
Along with the fast development of modern model system, acceleration overload switch shock resistance acceleration index is proposed to requirements at the higher level, make traditional action acceleration detection method be difficult to meet detection and batch product schedule requirement of new model.The action acceleration detection method of exploring highly effective replaces traditional detection method to become a kind of inevitable development trend.Tradition acceleration detection method generally adopts dropping shock testing table to carry out, and detects brief acceleration overload sensitive direction and impact direction and coaxially installs.After shock testing machine promotes and falls, detect overload switch operating state by pilot lamp, and adopt sensor to gather the action accekeration of overload switch single-impact sensitivity.The deficiency of this detection method is: in the time that overload switch action acceleration range is very little, traditional detection method can meet testing requirement, but in the time that action accekeration scope reaches hundreds of to thousands of g, adopt traditional dropping shock formula testing table to detect and just seem at a loss what to do.Although adopt airbag boost air formula shock testing machine can meet testing requirement, cost is too high, and detection efficiency is low, cannot meet modern model batch production requirements.
Summary of the invention
The object of the invention is the limitation existing for above-mentioned overload switch action acceleration detection method, a kind of overload switch acceleration detection unit clamp is provided, the detection method of using this detection fixture is provided simultaneously.
Described acceleration overload switch motion acceleration dedicated test fixture, by base, push rod, push rod, spring, fixed cap and handle composition, described base is provided with the positioning step that acceleration overload switch is installed, one side is provided with threaded mounting hole, described top stem casing upper spring, fixed cap and dock with handle after, stretch in the threaded mounting hole of described base one side and fix with sidewall, described push rod one end is fixedly attached to spring tension and compression testing machine relevant position, perpendicular to the acceleration overload switch on described base, and coaxial with the overload sensitive mechanism of acceleration overload switch.
[0005]described acceleration overload switch motion acceleration detection method, to use above-mentioned dedicated test fixture to detect, the steps include: after installation and measuring fixture, first pull the handle that detects fixture, make push rod Compress Spring, again overload switch to be detected is placed on the positioning step of base, then release handle, make spring reset, push rod compresses overload switch, push rod one end is installed on the spring tension and compression testing machine on base top, perpendicular to overload switch, and coaxial with the overload sensitive mechanism of overload switch, power value digital display device and spring tension and compression testing machine electrical connection, depress the push rod that detects fixture, in the time that push rod starts to contact with overload sensitive mechanism, by power value digital display device compression travel and the zeroing of force of compression value, then push rod continues compressive overload sensitive mechanism, when detecting the latch mechanism of fixture and snap in the locking draw-in groove moment of overload sensitive mechanism, the thrust F that the outside overload of overload sensitive mechanism impression produces and the resistance F that makes a concerted effort
resistancebalance, i.e. F=F
resistance,the namely pressure reading value on power value digital display device now, records this pressure reading value, and push rod is resetted, and pulls handle to make push rod Compress Spring, and push rod leaves overload switch, takes off tested overload switch, utilizes formula a=F/m=F
resistance/ m calculates the action accekeration that overload switch is corresponding, completes test process.
[0006]the present invention detects fixture by design specialized, adopt detection overload sensitive mechanism action locking moment suffered resistance power value to be scaled action accekeration and replace traditional detection method, reach reduction testing cost, raise the efficiency, solve the object of large impact acceleration overload switch acceleration detection means.The overloading acceleration value that alternative employing shock table is measured, simple and fast, with low cost, realize the detection effect of highly effective.
Brief description of the drawings
Fig. 1 is overload switch acceleration detection method overload sensitive mechanism force analysis figure of the present invention.
Fig. 2 is that overload switch acceleration detection method of the present invention detects principle assumption diagram.
Fig. 3 is acceleration overload switch acceleration detection method dedicated test clamp structure schematic diagram of the present invention.
Fig. 4 is overload switch acceleration detection detection method schematic diagram of the present invention.
In figure: 1-base, 2-push rod, 3-push rod, 4-spring, 5-fixed cap, 6-screw, 7-handle, 9-overload sensitive mechanism, 10-latch mechanism.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
As shown in Figure 3, overload switch acceleration detection dedicated test fixture of the present invention, is to utilize spring tension and compression testing machine to realize the locking of overload switch overload sensitive mechanism overload.This dedicated test fixture comprises: base 1, push rod 2, push rod 3, spring 4, fixed cap 5, screw 6 and handle 7, base 1 is processed positioning step, provide positioning supports for overload switch is installed, and at its opposite side, threaded hole is set, support for fixed cap 5 provides location and installation.Push rod 2 is flanged dish axis structure, and top machining shaft screw thread is convenient to install with spring tension and compression testing machine, fixed cap 5 provides installing space for push rod 3, and support for spring provides radial location, machining shaft screw thread on fixed cap 5 steps, realizes the connection with base 1.Push rod 3 head ends arrange spring positioning step and realize spring 4 and locate, and tail end arranges threaded hole, and spring 4 provides pre-pressing function for overload switch.When assembling, first spring 4 is installed on fixed cap 5 and push rod 3, then push rod 3, handle 7 are fastenedly connected with screw 6, be then installed on base 1 by fixed cap 5.
Fig. 4 is acceleration overload switch acceleration detection method process schematic diagram of the present invention.The method is to use aforementioned dedicated test fixture, the steps include: to install after dedicated test fixture, first pull the handle 7 that detects fixture, make push rod 3 Compress Springs 4, again overload switch to be detected is placed on the positioning step of base 1, then release handle, spring 4 is resetted, push rod 3 compresses overload switch, push rod 2 is installed on the spring tension and compression testing machine on base top, perpendicular to overload switch, coaxial with overload sensitive mechanism 9, depress push rod 2, in the time that push rod 2 starts to contact with overload sensitive mechanism 9, first by power value digital display device compression travel and the zeroing of force of compression value, then push rod 2 continues compressive overload sensitive mechanism 9, when latch mechanism 10 snaps in locking draw-in groove moment of overload sensitive mechanism 9, record the pressure reading on power value digital display device, this reading be thrust F that the outside overload of overload sensitive mechanism impression produces and with the resistance F that makes a concerted effort
resistancebalance, resets push rod 2, pulls handle 7 to make push rod 3 Compress Springs 4, and push rod 3 leaves overload switch, takes off tested overload switch, utilizes formula a=F/m=F
resistance/ m calculates the action accekeration that overload switch is corresponding, and day completes test process.
Fig. 1, Fig. 2 are the explanations of and principle stressed to detection method of the present invention, and wherein Fig. 1 is overload sensitive mechanism force analysis figure in acceleration overload switch in the present invention.Shown in figure, when overload switch action, the thrust that the outside overload of overload sensitive mechanism impression produces is F=ma, and the resistance being subject to has spring counter-force P, throw-over gear counter-force fj, latch mechanism friction force fs, balancing weight and orienting sleeve Contact Pair friction force fd, and above-mentioned four kinds of resistances are made a concerted effort for F
resistance,when snapping in overload sensitive mechanism 9, latch mechanism locks draw-in groove moment, the thrust F that the outside overload of overload sensitive mechanism impression produces and the resistance F that makes a concerted effort
resistancebalance, i.e. F=F
resistance,the namely pressure reading value on power value digital display device now.
Fig. 2 is that acceleration overload switch acceleration detection method of the present invention detects principle assumption diagram.Shown in figure, push rod 2 is rigidly fixed on spring tension and compression testing machine, power value digital display device and spring tension and compression testing machine are by electrical connection, the function of spring tension and compression testing machine is to promote push rod 2 move along compression direction to overload sensitive mechanism 9 and collection signal is transferred to power value digital display device, and the function of power value digital display device is that testing result is shown.
Claims (3)
1. an acceleration overload switch motion acceleration dedicated test fixture, it is characterized in that: this detection fixture is by base (1), push rod (2), push rod (3), spring (4), fixed cap (5) and handle (7) composition, described base (1) is provided with the positioning step that acceleration overload switch is installed, be provided with threaded mounting hole in one side, described push rod (3) cover upper spring (4), fixed cap (5) and dock with handle (7) after, stretch in the threaded mounting hole of described base (1) one side and fix with sidewall, described push rod (2) one end is fixedly attached to spring tension and compression testing machine relevant position, perpendicular to the acceleration overload switch on described base, and coaxial with the overload sensitive mechanism (9) of acceleration overload switch.
2. acceleration overload switch motion acceleration dedicated test fixture as claimed in claim 1, is characterized in that: described push rod (2) is flanged dish axis structure, and the one end being connected with spring tension and compression testing machine is provided with male thread.
3. an acceleration overload switch motion acceleration detection method, it is characterized in that: dedicated test fixture described in the requirement 1 of the method right to use, the steps include: after installation and measuring fixture, first pull the handle (7) that detects fixture, make push rod (3) Compress Spring (4), again overload switch to be detected is placed on the positioning step of base (1), then release handle, spring (4) is resetted, push rod (3) compresses overload switch, push rod (2) one end is installed on the spring tension and compression testing machine on base top, perpendicular to overload switch, and coaxial with the overload sensitive mechanism (9) of overload switch, power value digital display device and spring tension and compression testing machine electrical connection, depress the push rod (2) that detects fixture, in the time that push rod (2) starts to contact with overload sensitive mechanism (9), by power value digital display device compression travel and the zeroing of force of compression value, then push rod (2) continues compressive overload sensitive mechanism (9), when detecting the latch mechanism (10) of fixture and snap in the locking draw-in groove moment of overload sensitive mechanism (9), the thrust F that the outside overload of overload sensitive mechanism impression produces and the resistance F that makes a concerted effort
resistancebalance, i.e. F=F
resistance,the namely pressure reading value on power value digital display device now, records this pressure reading value, and push rod (2) is resetted, pull handle (7) to make push rod (3) Compress Spring (4), push rod (3) leaves overload switch, takes off tested overload switch, utilizes formula a=F/m=F
resistance/ m calculates the action accekeration that overload switch is corresponding, completes test process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110404898.5A CN103163311B (en) | 2011-12-08 | 2011-12-08 | Detection clamp and detection method special for action acceleration of overload switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110404898.5A CN103163311B (en) | 2011-12-08 | 2011-12-08 | Detection clamp and detection method special for action acceleration of overload switch |
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| Publication Number | Publication Date |
|---|---|
| CN103163311A CN103163311A (en) | 2013-06-19 |
| CN103163311B true CN103163311B (en) | 2014-12-10 |
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| CN201110404898.5A Active CN103163311B (en) | 2011-12-08 | 2011-12-08 | Detection clamp and detection method special for action acceleration of overload switch |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505050A (en) * | 2009-03-16 | 2009-08-12 | 桂林航天电子有限公司 | Electronic acceleration overload relay and using method therefor |
| CN101604582A (en) * | 2008-06-13 | 2009-12-16 | 施耐德电器工业公司 | The device that is used for controlling and applying contact pressure that is used for the electric switch unit |
| CN101667507A (en) * | 2008-09-04 | 2010-03-10 | 贵州航天电器股份有限公司 | Acceleration overload switch with high and low pass two-way acceleration signal output |
-
2011
- 2011-12-08 CN CN201110404898.5A patent/CN103163311B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101604582A (en) * | 2008-06-13 | 2009-12-16 | 施耐德电器工业公司 | The device that is used for controlling and applying contact pressure that is used for the electric switch unit |
| CN101667507A (en) * | 2008-09-04 | 2010-03-10 | 贵州航天电器股份有限公司 | Acceleration overload switch with high and low pass two-way acceleration signal output |
| CN101505050A (en) * | 2009-03-16 | 2009-08-12 | 桂林航天电子有限公司 | Electronic acceleration overload relay and using method therefor |
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| Publication number | Publication date |
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| CN103163311A (en) | 2013-06-19 |
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