CN2052842U - Contact-pull double safety brake system - Google Patents
Contact-pull double safety brake system Download PDFInfo
- Publication number
- CN2052842U CN2052842U CN 89213892 CN89213892U CN2052842U CN 2052842 U CN2052842 U CN 2052842U CN 89213892 CN89213892 CN 89213892 CN 89213892 U CN89213892 U CN 89213892U CN 2052842 U CN2052842 U CN 2052842U
- Authority
- CN
- China
- Prior art keywords
- electronic switch
- braking
- bar
- safe
- position limit
- 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.)
- Withdrawn
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- Push-Button Switches (AREA)
Abstract
The utility model relates to a safe protective device used for the roller-milling equipment in industries, such as the rubber industry, the plastic industry, the printing and dyeing industry, the paper-making industry, etc., namely, a contacting-pulling safe braking device with double safety. The device uses a contacting electronic switch and a safe bar is used as a sensing element, and therefore, an operator grasps the safe bar by hand to conveniently achieve the goal of quickly braking, and the device reserves the braking mode of the original pulling bar. The two modes are mutually independent and play the effect of double safety. Compared with the original pulling bar, the braking speed of the utility model is increased to two to three times and one safe bar has two kinds of braking functions so that the device has the advantage of obvious high reliability and can effectively prevent an accident of a machine injuring a human body from happening.
Description
A kind of safety protection device that industries such as rubber, plastics, printing and dyeing, papermaking are rolled over roller apparatus, specifically a kind of contact-pull dual fail-safe safety catch of being used for.
More the mode of braking of rolling roller apparatus such as the rubber mixing machine in China's rubber, the plastic industry, mangler adopts pull bar to press position limit switch or presses stop botton at present, and some equipment of import in recent years also adopt this mode.Find that its disadvantage is that retro-speed is slow in long-term the use, a cover is braked control, reliability is lower.What for example adopt on the rubber mixing machine is the pull bar braking, needs the time more than 0.3 second from pull bar to braking, because rubber mixing machine rolling roller rotating speed is very fast, operator run into the dangerous situation pull bar, the just very possible serious accident that the people takes place to be weighed wounded in 0.3 second before braking.Therefore be necessary the braking device of rolling over roller apparatus is transformed, innovated.
The purpose of this utility model is exactly to combine with pull bar and a kind of contact-pull dual fail-safe safety catch of proposing at the problems referred to above, the rapidity of utilizing electronic switching element, make roll over the roller braking rapidly, sensitive, reliable.
The purpose of this utility model is achieved in that
By safety bar, touch electronic switch, a merely hit relay etc. of two position limit switches and is formed contact-pull dual fail-safe safety catch.This device possesses two and overlaps independently brake switch, and one touches the electronic switch action for operator's grasping safety bar makes, and it two pushes down two position limit switches or any one for the drop-down safety bar of operator.This shows, outstanding feature of the present utility model is exactly with touching electronic switch, making its sensor by safety bar, reach the effect of fast braking, and kept the mode of braking of pulling safety bar, a safety bar possesses two kinds of modes of braking, two kinds of modes are separate, play the effect of dual fail-safe.Concrete scheme is as follows:
Safety bar (10) is the metal surface mutually insulated of both sides vertically, that is to say that the metal layer on safety bar shaft surface vertically is divided into two parts of mutually insulated, sees Fig. 1, and its insulation resistance is greater than 1.5 megaohms.One side links to each other with the induction end that touches electronic switch, and opposite side links to each other with the inductively end that touches electronic switch, becomes the sensor that touches electronic switch.Operator use the grasped safety bar, promptly in the induction end that touches electronic switch with inductively hold and add a human body resistance less than 1.5 megaohms, move, drive the auxiliary reclay action rapidly so touch electronic switch, ground connection is rolled over the auxiliary reclay normally opened contact J in roller apparatus motor braking loop
2Closure is connected on the auxiliary reclay normally-closed contact J that rolles over the roller apparatus motor control loop
3Continue out, reach the purpose of brake application stoping, see Fig. 2.
The safety bar two ends fixedly are inserted in the bracket box by spring, and are corresponding with the position limit switch position in the box.The normally opened contact of two position limit switches and above-mentioned J
2Contact and connecting device motor braking loop b-c end, the normally-closed contact of two position limit switches and above-mentioned J
3Contact series connection equipment motor control loop e-f end is seen Fig. 2.Therefore, spur downwards safety bar push down two position limit switches or wherein arbitrary can reach the brake application stoping effect equally, and do not touched the control of electronic switch.
The touch electronic switch is a known technology, and its working principle is seen Fig. 3, utilizes human body resistance (being the grasping safety bar) to improve triode BG
1The base stage status, make triode BG
2Saturation conduction.The conducting that is triggered of single-transistor BTJ conducting, controllable silicon SCR, the miniature relay Jx adhesive of switching on.In case the controllable silicon conducting, it controls effect extremely out of hand, so even if loose one's grip behind operator's grasping safety bar, equipment still is in the brake application stoping state.Therefore be necessary to connect a reset button on the electric power incoming line of touch electronic switch, when needing restart facility, click reset button, make to touch the electronic switch short supply interruption, controllable silicon SCR is recovered blocking state again.
The utility model is compared with former pull bar braking device, touch electronic switch owing to adopt, retro-speed obviously improves, the actuation time that touches electronic switch was less than 0.1 second, run into dangerous situation, almost in moment of operator's grasping safety bar, the rapid stall of roller is carried out, is rolled in braking immediately, its retro-speed improves 2-3 than former pull bar braking and has doubly avoided mechanical wounding effectively, this device possesses two and overlaps independently brake switch, and no matter which cover is malfunctioning, another set of still proper functioning, play the dual fail-safe effect, reliability obviously improves.This apparatus structure is simple, easy to operate, is easy to penetration and promotion.
Below in conjunction with accompanying drawing, embodiment the utility model is specifically described, but the utility model is not limited by described embodiment.
Fig. 1 is the structural representation of safety bar;
Fig. 2 is the control principle figure of this device;
Fig. 3 is for touching the fundamental diagram of electronic switch;
Fig. 4 is this Unit Installation schematic representation.
Wherein, the 1-insulating pole, the 2-induction end, 3-inductively holds, the 4-reset button, 5-touches electronic switch, 6-warning light, 7-auxiliary reclay, 8-position limit switch, 9-bracket box, the 10-safety bar, 11-spring, 12-Direct box, 13-bracket, 14-board.
Form safety bar (10) through identical steel pipe through processing with an internal diameter and insulation tube are outer by a plastic insulating tube (1), see Fig. 1, that is: steel pipe vertical being cutd open is two, and its section is processed, and is fixed on insulation tube (1) outside then.Both sides steel pipe after fixing remains a gap along insulation tube pipe shaft direction, that is to say that the both sides steel pipe relies on insulation tube pipe shaft mutually insulated up and down, the upside steel pipe with touch electronic switch A end and link to each other and become its induction end (2), the downside steel pipe with touch electronic switch B and hold to link to each other and become it and inductively hold (3).
Plastic tube length is 2.6 meters, and external diameter is 20mm, and steel pipe length is 2.6 meters, and internal diameter is 20mm, and the gap is 3-4mm.
The control principle of this device is seen Fig. 2, connects a reset button (4) on the electric power incoming line, touches the normally opened contact Jx-1 of electronic switch (5) and the coil series connection control power supply of auxiliary reclay (7); The normally opened contact J of auxiliary reclay (7)
1With warning light (6) series connection control power supply; Another pair normally opened contact J of auxiliary reclay (7)
2With normally opened contact XC1-1, XC2-1 and the connecting device motor braking loop c-d end of two position limit switches (8), the normally-closed contact J of auxiliary reclay (7)
3With the normally-closed contact of two position limit switches, XC1-2, XC2-2 series connection equipment motor control loop e-f end.
Auxiliary reclay-JZ7-44, reset button-LA19, warning light-XD8, position limit switch-X-2N.
Two position limit switches are installed in bracket box (9) lining respectively, and safety bar (10) two ends fixedly are inserted in bracket box (9) lining by spring (11), and are corresponding with the position limit switch position in the box; Touch electronic switch, auxiliary reclay are installed in the Direct box (12), and reset button (4) and warning light (6) are housed on its panel; Direct box (12) can be combined with a bracket box (9); By two tee T supports (13) two bracket boxes (9) are fixed on the board (14), see Fig. 4.
Touch the electronic switch working principle and see Fig. 3.Element is selected:
BG
1、BG
2－3DK4，BTJ－BT33D，SCR－3DT3K
D
1～D
5－IN4001，DW－2CW5，
R
1、R
5、R
8－820Ω，R
2－51K，R
3－1K，
R
4－3K，R
6－51Ω，R
7－6.5K，R
9－910K，
C
1、C
5－100μ／50V，C
2、C
3、C
4－0.022μ，
Jx－JTX－3。
Claims (1)
1, a kind of contact-pull dual fail-safe safety catch that is used for industries rolling roller apparatus such as rubber, plastics, printing and dyeing, papermaking is made up of safety bar, position limit switch, auxiliary reclay, touch electronic switch, it is characterized by:
The metal surface mutually insulated of a, the vertical both sides of safety bar, its insulation resistance is greater than 1.5 megaohms, one side links to each other with the induction end that touches electronic switch, and opposite side links to each other with the inductively end that touches electronic switch, promptly by the sensor of safety bar as the touch electronic switch;
B, by the break-make that touches electronic switch control auxiliary reclay, the normally opened contact of auxiliary reclay and the normally opened contact of position limit switch also connect the brake circuit of rolling roller apparatus motor; The control circuit of roller apparatus motor is rolled in the normally-closed contact series connection of the normally-closed contact of auxiliary reclay and position limit switch;
C, position limit switch are installed in the bracket box, the safety bar two ends by spring fixedly be inserted in the bracket box, corresponding with the position limit switch position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89213892 CN2052842U (en) | 1989-07-08 | 1989-07-08 | Contact-pull double safety brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89213892 CN2052842U (en) | 1989-07-08 | 1989-07-08 | Contact-pull double safety brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2052842U true CN2052842U (en) | 1990-02-14 |
Family
ID=4869768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89213892 Withdrawn CN2052842U (en) | 1989-07-08 | 1989-07-08 | Contact-pull double safety brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2052842U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106470031A (en) * | 2015-08-20 | 2017-03-01 | 发那科株式会社 | Employ double soft-touch controls of inductive proximity sensor |
-
1989
- 1989-07-08 CN CN 89213892 patent/CN2052842U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106470031A (en) * | 2015-08-20 | 2017-03-01 | 发那科株式会社 | Employ double soft-touch controls of inductive proximity sensor |
| US10439609B2 (en) | 2015-08-20 | 2019-10-08 | Fanuc Corporation | Redundant touch switch using induction proximity sensors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |