CN108320925A - A kind of special limit switch device of farm - Google Patents
A kind of special limit switch device of farm Download PDFInfo
- Publication number
- CN108320925A CN108320925A CN201810204754.7A CN201810204754A CN108320925A CN 108320925 A CN108320925 A CN 108320925A CN 201810204754 A CN201810204754 A CN 201810204754A CN 108320925 A CN108320925 A CN 108320925A
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- China
- Prior art keywords
- limit switch
- normally
- common electrical
- pole plate
- electrical pole
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
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- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The present invention relates to a kind of special limit switch devices of farm, it is characterised in that：Including mechanical trigger mechanism and electric signal output structure, mechanical trigger mechanism includes closed striker and rotary type trigger element, and closed striker is fixed on rotary type trigger element, constitutes triggering driving structure；Electric signal trigger architecture includes big valued resistor, normally opened contact, normally-closed contact, common electrical pole plate, electrode flat spring, one end of big valued resistor connects common electrical pole plate by two connection normally opened contacts, the other end of conducting wire by one of conducting wire, normally opened contact connects positive pole by one of resistance, forms A/D analog-to-digital conversions port, normally-closed contact passes through two connection positive poles, the formation logic input terminal mouth of resistance, public electrode plate earthing GND；One end of electrode flat spring is connected in fixed plate, the other end and common electrical pole plate, forms the driving structure that normally-closed contact is detached with common electrical pole plate.Have the characteristics that judge limit in time, prevents circuit and mechanical breakdown, ensures that production is normally carried out.
Description
Technical field
The present invention relates to a kind of machine driving limit switch, more particularly, to a kind of special limit switch device of farm,
There can be jitter phenomenon in equipment such as farms, often have in machine driving limit control in the environment that various animals walk about and use,
Limit especially suitable for the various sports equipments in pig, Ji Deng livestock and poultry animals farm controls.Belong to automated machine control
Technical field.
Background technology
Currently, with the development of human society, people’s lives are become better and better, and the demand to livestock and poultry meat is also increasingly
Greatly；Meanwhile with industry, the development of business and the inevitable excrement of cultivation itself, dirty smelly factor, being ready to be engaged in raising
The personnel of industry manual labor are fewer and fewer；On the one hand it is the increase of demand, is on the other hand the reduction of staff, promotes to pass
The artificial feeding of system changes to centralization, intelligentized modernization method for breeding, it is therefore desirable to which the automatic breeding of mechanization is set
It is standby, it to realize that mechanization cultivates, need to match machine driving limit switch.
The machine driving limit switch of the prior art, since its structure does not meet the requirement that farm uses, in other words its
Unreasonable structure, there are fault of construction, the problems such as be easy to causeing mechanical breakdown.Such as：Chinese patent discloses entitled " row
Journey limit switch device ", application No. is the inventions of " 2016109384608 ", including deceleration mechanism, and the deceleration mechanism is including passing
The prime transmission mechanism and final drive mechanism of dynamic connection；Further include at least one set of switching group, each group of switching group includes：Final stage
Switch trigger, final stage switch, prime switch trigger and prime switch；The final stage switch trigger is with final drive mechanism
In final drive mechanism, the prime switch trigger is arranged with moving with prime transmission mechanism to be driven the setting of movement ground in prime
In mechanism；When prime switch is triggered simultaneously with final stage switch, corresponding switching group switch operating state.The invention is not due to
With safeguard structure and complicated, therefore there are circuits to be easy by animal accidental destruction, circuit and mechanical breakdown easily occurs
The problems such as.Because the irregular of farm animal walks about to form unique production environment so that the gear unit of mechanical equipment holds
The unstable phenomenon for easily bounce occur, waving, is susceptible to the problem of failing to judge using the limit switch of the prior art, causes machinery
Failure.In addition, because the particular surroundings of farm, the various toys such as muroid are more, the circuit of limit switch is easy by animal
Accidental destruction also be easy to cause the failure of machinery, influences the production of farm.
Invention content
The purpose of the present invention is to be easy by animal accidental destruction, easily to occur there are circuit to solve existing limit switch
The problems such as circuit and mechanical breakdown, provides a kind of special limit switch device of farm.With timely judgement limit, prevent circuit
And mechanical breakdown, ensure that production such as is normally carried out at substantive distinguishing features outstanding and the significant technological progress.
The purpose of the present invention can be by taking following technical scheme to reach：
A kind of special limit switch device of farm, design feature are：It is defeated including mechanical trigger mechanism and electric signal
Go out structure, mechanical trigger mechanism includes closed striker and rotary type trigger element, and closed striker is fixed on rotary type triggering
Unit constitutes triggering driving structure；Electric signal trigger architecture includes big valued resistor, normally opened contact, normally-closed contact, public electrode
One end of plate, electrode flat spring, big valued resistor is connected by two connection normally opened contacts, the other end of conducting wire by one of conducting wire
Common electrical pole plate, normally opened contact connect positive pole by one of resistance, form A/D analog-to-digital conversions port, and normally-closed contact passes through
Two connection positive poles of resistance form logic input terminal mouth, public electrode plate earthing GND；One end of electrode flat spring connects
In fixed plate, the other end and common electrical pole plate, the driving structure that normally-closed contact is detached with common electrical pole plate is formed；Pass through detection
The voltage of normally-closed contact, normally opened contact, judges whether the state of special limit switch device and circuit are damaged.
The purpose of the present invention can also be by taking following technical scheme to reach：
Further, rotary type trigger element includes transmission arm, shaft and resetting spring, and the rear portion of transmission arm passes through shaft
It is connect with fixed plate, the front end of transmission arm is in arc-shaped and withstands the thixotroping common electrical pole plate of electric signal output structure, is formed and is turned
Dynamic formula trigger architecture.
Further, big valued resistor is equipped in signal trigger architecture, one end of big valued resistor connects by the two of conducting wire
Normally opened contact, the other end are connect by one of conducting wire connection common electrical pole plate, real-time detection structure is formed, passes through the real-time detection
Structure detects resistance between each signal wire of limit switch or current potential to judge whether the circuit of limit switch is damaged in real time.
Further, one end of electrode flat spring is fixedly connected by electrode plate spring strut with fixed plate.
Further, one end of resetting spring is fixedly connected by resetting spring pillar with fixed plate.
Further, the closed striker is made of the steel wire for curving annular.
Further, the big valued resistor is made of the resistor in the Europe 100K.
Further, the resetting spring and electrode flat spring are made of spring.
The present invention has following advantageous effect outstanding：
1, the present invention include mechanical trigger mechanism and electric signal output structure, mechanical trigger mechanism include closed striker and
Rotary type trigger element, closed striker are fixed on rotary type trigger element, constitute triggering driving structure；Electric signal trigger architecture
Including big valued resistor, normally opened contact, normally-closed contact, common electrical pole plate, electrode flat spring, one end of big valued resistor is by leading
Two connection normally opened contacts, the other end of line connect common electrical pole plate by one of conducting wire, and normally opened contact is connected by one of resistance
Positive pole forms A/D analog-to-digital conversions port, two connection positive poles, the formation logic input terminal that normally-closed contact passes through resistance
Mouthful, public electrode plate earthing GND；One end of electrode flat spring is connected in fixed plate, the other end and common electrical pole plate, formation are normal
The driving structure that closed contact is detached with common electrical pole plate；By detecting the voltage of normally-closed contact, normally opened contact, special limit is judged
Whether the state and circuit of switching device are damaged；Therefore existing limit switch can be solved to be easy surprisingly to be broken by animal there are circuit
The problems such as bad, easy generation circuit and mechanical breakdown, has and judges to limit in time, prevent circuit and mechanical breakdown, ensureing production just
Often carry out etc. substantive distinguishing features outstanding and significant technological progress.
2, of the invention to be equivalent to closed striker circle since closed striker has been socketed gear unit and live gear unit, because
No matter gear unit is beated to any direction, is waved for this, can be collided closed striker and be caused rotary type trigger element dynamic
Make, to trigger electric signal output structure output electric signal, can solve to hit less than striker due to gear unit is beated, waved
And the problem of failing to judge.
3, for the present invention due to possessing big valued resistor, device controller can detect each signal wire of limit switch in real time
Between resistance or current potential judge whether the circuit of limit switch is damaged, and then make corresponding control, avoid equipment impaired, in this way
It just solves the problems, such as surprisingly to be damaged by limit switch circuit and bring loss.
Description of the drawings
Fig. 1 is the structural schematic diagram of the specific embodiment of the invention 1.
Fig. 2 is the assembling schematic diagram with prosecution object during the specific embodiment of the invention 1 is applied.
Fig. 3 is the electrical connection of limit switch and device controller during the specific embodiment of the invention 1 is applied.
Wherein, 1- rotation axis；2- transmission arms；3- is driven contact；4- electrode plate spring struts；5- electrode flat springs；
6- common electrical pole plates；7- normally opened contact equalization points；8- normally opened contacts；The big valued resistors of 9-；One of 10- conducting wires；11- is multiple
Position spring strut；12- resetting springs；The closed strikers of 13-；14- gear units；15- limiters；16- fixed plates；
The two of 17- conducting wires.
Specific implementation mode
The present invention is described in further detail with reference to the accompanying drawings and embodiments：
Specific embodiment 1：
Referring to Fig.1, the present embodiment includes mechanical trigger mechanism and electric signal output structure, and mechanical trigger mechanism includes closing
Formula striker 13 and rotary type trigger element, closed striker 13 are fixedly connected with rotary type trigger element, constitute triggering driving knot
Structure；Electric signal trigger architecture includes big valued resistor 9, normally opened contact 8, normally-closed contact 3, common electrical pole plate 6, electrode flat spring 5,
One end of big valued resistor 9 connects public electrode by 2 17 connection normally opened contacts 8, the other end of conducting wire by one of conducting wire 10
Plate 6, normally opened contact 8 connect positive pole by one of resistance, form A/D analog-to-digital conversions ports, normally-closed contact 3 by resistance it
Two connection positive poles form logic input terminal mouth, and common electrical pole plate 6 is grounded GND；One end of electrode flat spring 5 is connected to solid
In fixed board 16, the other end and common electrical pole plate 6, form the driving structure that normally-closed contact 3 is detached with common electrical pole plate 6；Pass through inspection
The voltage for surveying normally-closed contact 3, normally opened contact 8, judges whether the state of special limit switch device and circuit are damaged.
In the present embodiment：
Rotary type trigger element includes transmission arm 2, shaft 1 and resetting spring 12, the rear portion of transmission arm 2 by shaft 1 with
Fixed plate 16 connects, and the front end of transmission arm 2 is in arc-shaped and withstands the thixotroping common electrical pole plate 6 of electric signal output structure, is formed
Rotary type trigger architecture.
Big valued resistor 9 is equipped in signal trigger architecture, one end of big valued resistor 9 is normally opened by 2 17 connections of conducting wire
Contact, the other end connect common electrical pole plate 6 by one of conducting wire 10, form real-time detection structure, are tied by the real-time detection
Structure detects resistance between each signal wire of limit switch or current potential to judge whether the circuit of limit switch is damaged in real time.
One end of electrode flat spring 5 is fixedly connected by electrode plate spring strut 4 with fixed plate 16.
One end of resetting spring 12 is fixedly connected by resetting spring pillar 12 with fixed plate 16.
The closed striker 13 is made of the steel wire for curving annular.
The big valued resistor 9 is made of the resistor in the Europe 100K.
The resetting spring 12 and electrode flat spring 5 are made of spring.
The operation principle of the present embodiment 1 is as follows：
As shown in Fig. 2, the present embodiment is in practical applications, mechanical trigger mechanism coordinates with gear unit 14 and limiter 15
It uses, wherein one end connection limiter 15 of gear unit 14, another end are that free end is closed the socket of formula striker 13, closed to hit
The both ends of needle 13 connect rotary type trigger element.
The limiter 15 for detecting object is fixed on gear unit 14, gear unit 14 is then inserted in closed striker
In 13.The limiter 15 is circular snap-gauge, and radius is more than the annular radius of closed striker 13；The gear unit 14
It is steel wire rope.
As shown in Fig. 2, in the initial state, common electrical pole plate 6 is in close contact the normally-closed contact 3, (connection of external controller
Appreciate closed contact 3 and normally opened contact 8) collected 3 level of normally-closed contact is 0 (low level), the voltage value of normally opened contact 8 is
(100K/(R2+100K))*VCC。
When gear unit 14 moves down, drives limiter 15 to move down close to closed striker 13, work as limiter
15 touch closed striker 13 after force closed striker 13 to be rotated clockwise around rotation axis 1 together with transmission arm 2, it is public
Common-battery pole plate 6 leaves normally-closed contact 3 under the elastic force effect of electrode flat spring 5 and shifts to normally opened contact 8 until being in close contact, at this time
Outside setting collected 3 level of normally-closed contact of controller is 1 (high level), and the voltage value of normally opened contact 8 is 0V, is so far completed
Primary limit triggering electric signal conversion；When gear unit 14 moves up, limiter 15 is driven to move upwardly off closed
Striker 13, closed striker 13 is done under the elastic force effect of resetting spring 12 around rotation axis 1 together with transmission arm 2 counterclockwise to be revolved
Turn, transmission arm 2 forces contact public electrode 6 to leave normally opened contact 8 and shifts to normally-closed contact 3 until returning to original state, at this time outside
It is 0 (low level) that collected 3 level of normally-closed contact of controller, which is arranged, in portion, and the voltage value of normally opened contact 8 is (100K/ (R2+
100K)) * VCC, to the primary limit release current potential number conversion of this completion.
Referring to figs. 1 to Fig. 3, in the present embodiment 1, because there is the presence of big valued resistor 9, as limit switch (present invention)
The level value for the voltage value and normally-closed contact 3 that outside setting controller can acquire normally opened contact 8 in real time when being in the normal state comes
Judge whether limit switch circuit has damage and its deterioration extent, specific decision logic as follows：
When limit switch (present invention) is under normal normality, the level of normally-closed contact 3 is 0 (low level), normally opened to touch
The voltage value of point 8 is (100K/ (R2+100K)) * VCC.When the damage of the circuit of common electrical pole plate 6, the level of normally-closed contact 3 is 1
The voltage value of (high level), normally opened contact 8 is VCC；When the damage of the circuit of normally opened contact 8, the level of normally-closed contact 3 is 0, often
The voltage value for opening contact 8 is VCC；When the damage of the circuit of normally-closed contact 3, the level of normally-closed contact 3 is 1, the electricity of normally opened contact 8
Pressure value is (100K/ (R2+100K)) * VCC；When arbitrary two lines road and three-line damage, the level of normally-closed contact 3 is
The voltage value of 1 (high level), normally opened contact 8 is VCC.
Referring to figs. 1 to Fig. 3, in the practical application of the present embodiment 1, when gear unit 14 moves down, because using
Closed striker 13, no matter driving wire rope is beated to which direction, is waved, because the radius of limiter 15 is more than closed striker
13 annular radius can all touch closed striker 13, and then trigger the position that limit switch (present invention) sends out limiter 15
Confidence number.
The present invention can correctly judge to limit, in limit switch in time in the case where gear unit bounce occurs, waves
Circuit is reacted in time when accidental damage gives automated machine device controller, provides a kind of closed big valued resistor of striker band
The limit switch of normally opened contact and normally-closed contact has and is not afraid of gear unit bounce, waves and can be controlled in time to equipment
Device provides the characteristics of circuit damage information.
Claims (8)
1. a kind of special limit switch device of farm, it is characterised in that：Including mechanical trigger mechanism and electric signal output structure,
Mechanical trigger mechanism includes closed striker (13) and rotary type trigger element, and closed striker (13) is fixed on rotary type triggering
Unit constitutes triggering driving structure；Electric signal trigger architecture includes big valued resistor (9), normally opened contact (8), normally-closed contact
(3), one end of common electrical pole plate (6), electrode flat spring (5), big valued resistor (9) connects normally opened touch by two (17) of conducting wire
Point (8), the other end connect common electrical pole plate (6) by one of conducting wire (10), and normally opened contact (8) connects power supply by one of resistance
Anode forms A/D analog-to-digital conversions port, two connection positive poles, the formation logic input terminal that normally-closed contact (3) passes through resistance
Mouthful, common electrical pole plate (6) is grounded GND；One end of electrode flat spring (5) is connected in fixed plate (16), the other end and common electrical
Pole plate (6) forms the driving structure that normally-closed contact (3) is detached with common electrical pole plate (6)；By detecting normally-closed contact (3), normally opened
The voltage of contact (8), judges whether the state of special limit switch device and circuit are damaged.
2. the special limit switch device of a kind of farm according to claim 1, it is characterised in that：Rotary type trigger element
Including transmission arm (2), shaft (1) and resetting spring (12), the rear portion of transmission arm (2) is connected by shaft (1) and fixed plate (16)
It connects, the front end of transmission arm (2) is in arc-shaped and withstands the thixotroping common electrical pole plate (6) of electric signal output structure, forms rotary type
Trigger architecture.
3. the special limit switch device of a kind of farm according to claim 1 or 2, it is characterised in that：Signal triggering knot
Big valued resistor (9) is equipped in structure, one end of big valued resistor (9) connects normally opened contact, the other end by two (17) of conducting wire
Common electrical pole plate (6) is connected by one of conducting wire (10), forms real-time detection structure, it is real-time by the real-time detection structure
Resistance or current potential between each signal wire of limit switch are detected to judge whether the circuit of limit switch is damaged.
4. the special limit switch device of a kind of farm according to claim 3, it is characterised in that：Electrode flat spring (5)
One end be fixedly connected with fixed plate (16) by electrode plate spring strut (4).
5. the special limit switch device of a kind of farm according to claim 4, it is characterised in that：Resetting spring (12)
One end is fixedly connected by resetting spring pillar (12) with fixed plate (16).
6. the special limit switch device of a kind of farm according to claim 5, it is characterised in that：The closed striker
(13) it is made of the steel wire for curving annular.
7. the special limit switch device of a kind of farm according to claim 6, it is characterised in that：The big valued resistor
9 are made of the resistor in the Europe 100K.
8. the special limit switch device of a kind of farm according to claim 7, it is characterised in that：The resetting spring
(12) it is made of spring with electrode flat spring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810204754.7A CN108320925B (en) | 2018-03-13 | 2018-03-13 | Special limit switch device in plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810204754.7A CN108320925B (en) | 2018-03-13 | 2018-03-13 | Special limit switch device in plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108320925A true CN108320925A (en) | 2018-07-24 |
| CN108320925B CN108320925B (en) | 2023-02-03 |
Family
ID=62902442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810204754.7A Active CN108320925B (en) | 2018-03-13 | 2018-03-13 | Special limit switch device in plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108320925B (en) |
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| CN102936926A (en) * | 2012-10-29 | 2013-02-20 | 广东电网公司电力科学研究院 | Multi-dimensional collision energy consumption mass pendulum damper |
| CN103151219A (en) * | 2011-12-07 | 2013-06-12 | 大连理工大学 | Three-stable-state bi-directional crash sensor with threshold values adjustable |
| CN204096550U (en) * | 2014-09-19 | 2015-01-14 | 兰建新 | Pull switch system |
| WO2016169433A1 (en) * | 2015-04-21 | 2016-10-27 | 石立公 | Multi-level powder-type insulated high-speed miniature collision switch |
| CN208173438U (en) * | 2018-03-13 | 2018-11-30 | 李乔 | A kind of dedicated limit switch device of farm |
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2018
- 2018-03-13 CN CN201810204754.7A patent/CN108320925B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201240272Y (en) * | 2008-04-18 | 2009-05-20 | 谭志强 | Instant power circuit breaker for vehicle collision or overturning |
| CN101404110A (en) * | 2008-10-12 | 2009-04-08 | 朱祚睿 | Portable aftershock alarm apparatus for earthquake salvation scene |
| CN201917986U (en) * | 2010-12-07 | 2011-08-03 | 方向阳 | Burglar alarm |
| CN202042415U (en) * | 2011-04-14 | 2011-11-16 | 赵剑 | Permanent magnet type universal crash sensor adopting single elastic bar |
| CN103151219A (en) * | 2011-12-07 | 2013-06-12 | 大连理工大学 | Three-stable-state bi-directional crash sensor with threshold values adjustable |
| CN102936926A (en) * | 2012-10-29 | 2013-02-20 | 广东电网公司电力科学研究院 | Multi-dimensional collision energy consumption mass pendulum damper |
| CN204096550U (en) * | 2014-09-19 | 2015-01-14 | 兰建新 | Pull switch system |
| WO2016169433A1 (en) * | 2015-04-21 | 2016-10-27 | 石立公 | Multi-level powder-type insulated high-speed miniature collision switch |
| CN208173438U (en) * | 2018-03-13 | 2018-11-30 | 李乔 | A kind of dedicated limit switch device of farm |
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| Publication number | Publication date |
|---|---|
| CN108320925B (en) | 2023-02-03 |
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