CN215796647U - Protective device of adhesive tape machine - Google Patents
Protective device of adhesive tape machine Download PDFInfo
- Publication number
- CN215796647U CN215796647U CN202122363722.1U CN202122363722U CN215796647U CN 215796647 U CN215796647 U CN 215796647U CN 202122363722 U CN202122363722 U CN 202122363722U CN 215796647 U CN215796647 U CN 215796647U
- Authority
- CN
- China
- Prior art keywords
- contact
- contacts
- power supply
- supply device
- opening
- 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.)
- Active
Links
Images
Landscapes
- Emergency Alarm Devices (AREA)
Abstract
The utility model discloses a protective device of a tape machine, comprising: limit switch, relay, power supply unit, first pilot lamp and second pilot lamp. The limit switch comprises a first switching contact and a second switching contact, and each set of switching contacts comprises two contacts. The relay has a third open contact and a fourth closed contact. One of the first opening and closing contacts is connected with the positive pole of the power supply device, and the other contact, the electromagnet coil of the relay and the negative pole of the power supply device are sequentially connected. Two contacts in the second opening and closing contacts are connected with a circuit board in the limit switch. And the common contact and the normally open contact in the third open-close contact are connected with the circuit board in the limit switch. The fourth switch contact, the first indicator light or the second indicator light and the power supply device form a loop. The protection device can quickly position and indicate the position of the fault point, so that a worker can quickly determine the fault point, the worker fault determination time is obviously shortened, and the production efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of adhesive tape machines, in particular to a protective device of an adhesive tape machine.
Background
The information disclosed in this background of the utility model is only for enhancement of understanding of the general background of the utility model and is not necessarily to be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
The application of the adhesive tape in various fields is very common, and the protection device of the prior adhesive tape machine has the following defects in the use process:
on the one hand, because the tape machine is longer along the distance, tape machine quantity is more, and five protection switch quantity that use are also more, and in the sticky tape operation process, the phenomenon of malfunction (for example spill material mistake touch switch) can appear, lead to tape machine stall, and whether this switch is in the action state can't audio-visual observation to original five protection switch, cause inconvenience for patrolling and examining workman, maintenance workman, influence production efficiency simultaneously.
On the other hand, after the five protection switches are operated manually, when the five protection switches are recovered after the site is evacuated, the five protection switches are possibly not recovered in place due to weather (cold) and other reasons, but the five protection switches cannot be directly seen in appearance (small deformation), and the number report of the communication system is inaccurate.
In order to solve the problems, the existing method is to search fault points one by one manually or search the fault points by an elimination method, which brings great inconvenience to the search work of maintenance workers and seriously affects the production efficiency.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides the protection device of the adhesive tape machine, which can quickly position and indicate the position of the fault point, so that a worker can quickly determine the fault point, the work fault determination time is obviously shortened, and the production efficiency is improved. In order to achieve the above object, the present invention provides the following technical solutions.
First, a protection device for a first tape machine is disclosed, including: limit switch, relay, power supply unit, first pilot lamp and second pilot lamp. Wherein: the limit switch comprises a first switching contact and a second switching contact, and each set of switching contacts comprises two contacts. The relay has a third open contact and a fourth closed contact. One of the first opening and closing contacts is connected with the positive pole of the power supply device, the other contact is connected with an electromagnet coil in the relay, and the electromagnet coil is connected with the negative pole of the power supply device. And the public contact and the normally open contact in the third open-close contact are connected with the circuit board in the limit switch. A common contact in the fourth closed contact is connected with the positive electrode of the power supply device, a normally closed contact is sequentially connected with the first indicator light and the negative electrode of the power supply device, and a normally open contact is sequentially connected with the second indicator light and the negative electrode of the power supply device; and the indicating colors of the first indicating lamp and the second indicating lamp are different.
Secondly, a protection device of a second adhesive tape machine is disclosed, which is different from the first protection device in that a voice prompter is used for replacing the first indicator light and the second indicator light, the positive pole and the negative pole of the voice prompter are respectively connected with the positive pole and the negative pole of a power supply device, the public end of the voice prompter is connected with the public contact in the fourth closed contact, and two voice trigger wires of the voice prompter are respectively connected with the normally open contact and the normally closed contact in the fourth closed contact; therefore, the fault point is indicated and prompted by a voice prompt instead of an indicator lamp.
Thirdly, a protection device of a third adhesive tape machine is disclosed, which is different from the first protection device in that an audible and visual alarm is used for replacing the first indicator light and the second indicator light, the positive and negative electrodes of the audible and visual alarm are respectively connected with the positive and negative electrodes of the power supply device, the common end of the audible and visual alarm is connected with the common contact in the fourth closed contact, and two voice trigger wires of the audible and visual alarm are respectively connected with the normally open contact and the normally closed contact in the fourth closed contact; therefore, the fault point is indicated and prompted in a sound and light prompting mode.
Secondly, a fourth protection device of the adhesive tape machine is disclosed, which is different from the first protection device in that the fourth protection device further comprises a voice prompter or an audible and visual alarm, the relay is also provided with a fifth opening and closing contact, the positive electrode and the negative electrode of the voice prompter or the audible and visual alarm are respectively connected with the positive electrode and the negative electrode of the power supply device, the common end of the voice prompter or the audible and visual alarm is connected with the common contact in the fifth opening and closing contact, and two voice trigger lines of the voice prompter or the audible and visual alarm are respectively connected with the normally open contact and the normally closed contact in the fifth opening and closing contact; so that the indication and the prompt of the fault point can be simultaneously carried out by voice/sound prompt and light lamp.
Furthermore, two contacts in the second opening and closing contacts are connected with a circuit board in the limit switch.
Furthermore, the power supply device is a storage battery and is mainly used for supplying power to electrical appliances such as a limit switch, an indicator light and a voice prompter.
Further, the power supply device is provided with a charging interface, such as a Micro usb charging interface, a Type-C charging interface and the like, so that the power supply device can be charged conveniently.
Further, the indication color of the first indicator light or the second indicator light includes any one of red, yellow, green, and the like.
Further, the protective device also comprises a tape machine comprehensive protection instrument connected with the circuit board in the limit switch.
The controller is connected with the comprehensive protection instrument of the adhesive tape machine and is mainly used for starting and stopping the adhesive tape machine according to information transmitted by the circuit board through the comprehensive protection instrument of the adhesive tape machine.
Compared with the prior art, the utility model has the following beneficial effects: the protection device of the belt conveyor disclosed by the utility model realizes the accurate positioning and indication of the fault point by utilizing the control of the limit switch and utilizing the control of the relay on different indicating devices connected with the limit switch, so that a worker can quickly determine the fault point, the worker fault determination time is obviously reduced, and the production efficiency is improved. Meanwhile, the problem that whether the switch acts is not well observed under the condition that light is not good at night is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.
Fig. 1 is a schematic structural diagram of a protection device of a first adhesive tape machine of the present invention.
Fig. 2 is a schematic structural diagram of a protection device of a second adhesive tape machine of the utility model.
Fig. 3 is a schematic structural diagram of a protection device of a third adhesive tape machine according to the present invention.
Fig. 4 is a schematic structural diagram of a protection device of a fourth adhesive tape machine according to the present invention.
The scores in the figure represent: the device comprises a 1-limit switch, a 1.1-first opening and closing contact, a 1.2-second opening and closing contact, a 1.3-circuit board, a 2-relay, a 2.1-third opening and closing contact, a 2.2-fourth opening and closing contact, a 2.3-electromagnet coil, a 2.4-fifth opening and closing contact, a 3-power supply device, a 4-first indicator lamp, a 5-second indicator lamp, a 6-voice prompter, a 7-acousto-optic alarm, an 8-adhesive tape machine comprehensive protection instrument, a 9-controller and a 10-pull rod.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
For convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate that the directions of movement are consistent with those of the drawings, and do not limit the structure, but merely facilitate the description of the utility model and simplify the description, rather than indicate or imply that the referenced device or element needs to have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.
Term interpretation section: the terms "mounted," "connected," "fixed," and the like in the present invention are to be understood in a broad sense, and for example, the terms "mounted," "connected," and "fixed" may be fixed, detachable, or integrated; the connecting lines may be mechanical, direct or indirect through an intermediate, and those skilled in the art will understand the specific meaning of the above terms in the present invention according to specific situations. The protection device of the adhesive tape machine of the utility model will be further described with reference to the drawings and the specific embodiments of the specification.
Referring to fig. 1, a protection device of a first tape machine is illustrated, including: limit switch 1, relay 2, power supply unit 3, first pilot lamp 4 and second pilot lamp 5, wherein:
the limit switch 1 is of a pull rod type and comprises a first opening and closing contact 1.1 and a second opening and closing contact 1.2, and each set of the opening and closing contacts comprises two contacts. The relay 2 is provided with a third opening and closing contact 2.1 and a fourth opening and closing contact 2.2, and the third opening and closing contact 2.1 and the fourth opening and closing contact 2.2 respectively comprise a common contact, a normally open contact, a normally closed contact and three contacts in total. It should be noted that, in general, the existing relay includes four sets of contacts/terminals, and each set of contacts/terminals includes the above three types of contacts. In this embodiment, an existing relay may be directly adopted, and only two sets of contacts may be used as needed, and the contacts of the other sets may be left vacant, and fig. 1 also illustrates two sets of contacts in the relay 2, that is, the third open contact 2.1 and the fourth open contact 2.2.
The power supply device 3 is a 24V storage battery and is mainly used for supplying power to electrical appliances such as the limit switch 1, the first indicator lamp 4 and the second indicator lamp 5. The power supply device 3 is provided with a charging interface so as to charge the power supply device 3. Further, the charging interface is selected from a Micro usb charging interface or a Type-C charging interface.
One of the first opening and closing contacts 1.1 is connected with the positive pole of the power supply device 3, the other contact is connected with the electromagnet coil 2.3 in the relay 2, and the electromagnet coil 2.3 is connected with the negative pole of the power supply device 3. Two contacts in the second opening and closing contacts 1.2 are connected with a circuit board 1.3 in the limit switch 1 through shutdown lines.
And the public contact and the normally open contact in the third open and close contact 2.1 are connected with the circuit board 1.3 through communication lines. When the state of the limit switch 1 is changed due to mistaken collision, the communication line is switched from disconnection to connection, so that a signal of action of the limit switch 1 is transmitted to a display screen of the adhesive tape machine comprehensive protection instrument, and a monitoring worker can remind a field worker of a fault and needs to check the fault.
A common contact in the fourth closed contact 2.2 is connected with a positive electrode of the power supply device 3, a normally closed contact is sequentially connected with a first indicator lamp 4 and a negative electrode of the power supply device 3, and a normally open contact is sequentially connected with a second indicator lamp 5 and a negative electrode of the power supply device 3; and the indication colors of the first indicator light 4 and the second indicator light 5 are green and red, respectively. It should be noted that the first indicator light 4 and the second indicator light 5 may have different indication colors to represent different states, for example, a green light indicates a normal state, and a red light indicates a fault. Therefore, the indication color of the first indicator light 4 or the second indicator light 5 can be selected from any one of red, yellow, green, etc., as long as the two indicator lights are different in color.
When the protective device of the adhesive tape machine is installed and used, a plurality of protective devices of the adhesive tape machine in the above embodiments are connected in series on an adhesive tape machine production line, the protective devices are connected in series through the circuit board 1.3, and as long as a limit switch of one protective device is touched by mistake, a stop signal can be generated to stop the production line. The circuit board 1.3 in the limit switch 1 of the last protective device on the adhesive tape machine production line is connected with the adhesive tape machine comprehensive protective instrument 8 through a signal line, and the adhesive tape machine comprehensive protective instrument 8 is connected with the controller 9 through the signal line, so that the circuit board 1.3 can start and stop the adhesive tape machine according to the information transmitted by the adhesive tape machine comprehensive protective instrument 7.
In this embodiment, the circuit board 1.3, the tape machine comprehensive protection instrument 7, and the controller 9 are all products in the prior art, for example, the circuit board 1.3 may be a circuit board for five protection switches in the prior art, the tape machine comprehensive protection instrument 7 may be a JJZB series tape machine comprehensive protection instrument, and the controller 9 may be a controller provided for the tape machine, and may be a PLC controller.
The principle of the protection device of the adhesive tape machine in the embodiment is as follows: when the pull rod 10 in the limit switch 1 is touched by mistake to change the original state (for example, the pull rod is pulled out), two contacts in the first opening and closing contact 1.1 are communicated, two contacts in the second opening and closing contact 1.2 are disconnected, at the moment, a disconnection signal is transmitted to the circuit board 1.3, the circuit board 1.3 transmits the disconnection signal to the adhesive tape machine comprehensive protection instrument 8 and the controller 9 in sequence through a signal line, and then the adhesive tape machine is controlled to stop, at the moment, the production line stop caused by the mistaken touch is generated. When the machine is shut down, because two contacts in the first opening and closing contact 1.1 are communicated, the electromagnet coil 2.3 is electrified, the armature iron enables the normally closed contact in the fourth opening and closing contact 2.2 to be disconnected with the common contact under the magnetic attraction effect of the electromagnet coil 2.3, the normally open contact is conducted with the common contact (the working principle of an electromagnetic relay can be specifically referred to), so that the first indicator lamp 4 is turned off, the second indicator lamp 5 is turned on, namely, the color of the indicator lamp is changed from green to red, the adhesive tape machine at the moment is in a shutdown state, a worker can quickly determine a fault point by checking the condition of the indicator lamp in numerous protection devices in the adhesive tape machine production line, the work failure determination time is remarkably reduced, and the production efficiency is improved. Meanwhile, the problem that whether the switch acts is not well observed under the condition that light is not good at night is solved. When the fault is removed, the pull rod 10 in the limit switch 1 is reset again, the adhesive tape machine is restarted, the electromagnet coil 2.3 is electrified, the magnetic attraction effect disappears, the normally closed contact in the fourth closed contact 2.2 is automatically connected with the common contact, the normally open contact is disconnected with the common contact, the first indicator lamp 4 is turned on, the second indicator lamp 5 is turned off, namely, the color of the indicator lamp is changed from red to green, and the adhesive tape machine is in a normal working state.
In another embodiment, referring to fig. 2, a protection device of a second adhesive tape machine is illustrated, which is different from the first protection device illustrated in fig. 1: replace with voice prompt 6 first pilot lamp 4 and second pilot lamp 5, voice prompt 6's positive negative pole is connected with power supply unit 3's positive negative pole respectively, and voice prompt 6's public end is connected with the public contact among the fourth closed contact 2.2, and two pronunciation trigger lines of voice prompt 6 are connected with normally open contact, the normally closed contact among the fourth closed contact 2.2 respectively. Therefore, the indication and the prompt of the fault point are carried out by replacing the indicator lamp in a voice prompt mode, at the moment, when the stop switch 1 is stopped due to the mistaken collision, the normally open contact in the four-way closed contact 2.2 is conducted, the voice prompt 6 plays the voice prompt with the fault, the voice prompt is set in advance, the content of the voice prompt can be set as required, as an optimal embodiment, the content of the voice prompt comprises the serial number of the protection device of the corresponding adhesive tape machine, the serial number is printed or marked on the shell of the protection device of the adhesive tape machine, and the corresponding protection device of the adhesive tape machine can be found quickly as long as the serial number is prompted according to the voice. Therefore, as a further preferred embodiment, the protection devices of a plurality of adhesive tape machines distributed in series on the adhesive tape machine production line are numbered in sequence, so that the corresponding protection devices of the adhesive tape machines can be found quickly according to the prompted serial numbers. The voice prompter 6 is a product in the prior art and can be purchased from the market.
In another embodiment, referring to fig. 3, a protection device of a third tape machine is illustrated, which is different from the first protection device illustrated in fig. 1: replace with audible-visual annunciator 7 first pilot lamp 4 and second pilot lamp 5, audible-visual annunciator 7's positive negative pole is connected with power supply unit 3's positive negative pole respectively, and audible-visual annunciator 7's common port and the public contact in the fourth closed contact 2.2 are connected, and two pronunciation trigger lines of audible-visual annunciator 7 are connected with normally open contact, the normally closed contact in the fourth closed contact 2.2 respectively. Therefore, the fault point is indicated and prompted in a sound and light prompting mode, and the sound and light and voice prompting is more suitable for quick positioning of the fault point under the condition of poor light at night.
In another embodiment, referring to fig. 3, a protection device of a fourth tape machine is illustrated, which is different from the first protection device illustrated in fig. 1: still include voice prompt 6, and relay 2 still has fifth switching contact 2.4, voice prompt 6's positive negative pole is connected with power supply unit 3's positive negative pole respectively, voice prompt 6's public end is connected with the public contact in the fifth switching contact 2.4, two pronunciation trigger lines of voice prompt 6 respectively with the normally open contact in the fifth switching contact 2.4, normally closed contact is connected, thereby carry out the instruction and the suggestion of fault point simultaneously with voice prompt and pilot lamp, the dual mode of reminding of voice prompt and pilot lamp is adopted to this kind of condition, can satisfy daytime, the requirement of equal quick location fault point night, and the suitability is better.
Finally, it should be understood that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. The utility model provides a protection device of sealing-tape machine which characterized in that includes:
the limiting switch comprises a first switching contact and a second switching contact, and each set of switching contacts comprises two contacts;
a relay having a third open contact and a fourth closed contact;
one contact in the first opening and closing contacts is connected with the positive electrode of the power supply device, the other contact is connected with an electromagnet coil in the relay, and the electromagnet coil is connected with the negative electrode of the power supply device;
two contacts in the second opening and closing contacts are connected with a circuit board in the limit switch;
a common contact and a normally open contact in the third open and close contacts are connected with the circuit board;
first pilot lamp, second pilot lamp, the instruction colour of first pilot lamp and second pilot lamp is different, just public contact in the fourth closed contact is connected with power supply unit's positive pole, and normally closed contact wherein connects gradually with first pilot lamp, power supply unit's negative pole, and normally open contact wherein connects gradually with second pilot lamp, power supply unit's negative pole.
2. The utility model provides a protection device of sealing-tape machine which characterized in that includes:
the limiting switch comprises a first switching contact and a second switching contact, and each set of switching contacts comprises two contacts;
a relay having a third open contact and a fourth closed contact;
one contact in the first opening and closing contacts is connected with the positive electrode of the power supply device, the other contact is connected with an electromagnet coil in the relay, and the electromagnet coil is connected with the negative electrode of the power supply device;
two contacts in the second opening and closing contacts are connected with a circuit board in the limit switch;
a common contact and a normally open contact in the third open and close contacts are connected with the circuit board;
and the positive and negative electrodes of the voice prompter are respectively connected with the positive and negative electrodes of the power supply device, the public end of the voice prompter is connected with the public contact in the fourth closed contact, and two voice trigger lines of the voice prompter are respectively connected with the normally open contact and the normally closed contact in the fourth closed contact.
3. The utility model provides a protection device of sealing-tape machine which characterized in that includes:
the limiting switch comprises a first switching contact and a second switching contact, and each set of switching contacts comprises two contacts;
a relay having a third open contact and a fourth closed contact;
one contact in the first opening and closing contacts is connected with the positive electrode of the power supply device, the other contact is connected with an electromagnet coil in the relay, and the electromagnet coil is connected with the negative electrode of the power supply device;
two contacts in the second opening and closing contacts are connected with a circuit board in the limit switch;
a common contact and a normally open contact in the third open and close contacts are connected with the circuit board;
and the positive and negative electrodes of the audible and visual alarm are respectively connected with the positive and negative electrodes of the power supply device, the public end of the audible and visual alarm is connected with the public contact in the fourth closed contact, and two voice trigger lines of the audible and visual alarm are respectively connected with the normally open contact and the normally closed contact in the fourth closed contact.
4. The utility model provides a protection device of sealing-tape machine which characterized in that includes:
the limiting switch comprises a first switching contact and a second switching contact, and each set of switching contacts comprises two contacts;
the relay is provided with a third opening and closing contact, a fourth opening and closing contact and a fifth opening and closing contact;
one contact in the first opening and closing contacts is connected with the positive electrode of the power supply device, the other contact is connected with an electromagnet coil in the relay, and the electromagnet coil is connected with the negative electrode of the power supply device;
two contacts in the second opening and closing contacts are connected with a circuit board in the limit switch;
a common contact and a normally open contact in the third open and close contacts are connected with the circuit board;
the first indicator light and the second indicator light are different in indication color, a common contact in the fourth closed contact is connected with a positive electrode of the power supply device, a normally closed contact is sequentially connected with negative electrodes of the first indicator light and the power supply device, and a normally open contact is sequentially connected with negative electrodes of the second indicator light and the power supply device;
and the positive and negative electrodes of the voice prompter or the audible and visual alarm are respectively connected with the positive and negative electrodes of the power supply device, the public end of the voice prompter or the audible and visual alarm is connected with the public contact in the fifth opening and closing contact, and two voice trigger lines of the voice prompter or the audible and visual alarm are respectively connected with the normally open contact and the normally closed contact in the fifth opening and closing contact.
5. The protection device of adhesive tape machine as claimed in claim 1 or 4, wherein the indication color of the first indicator light or the second indicator light includes any one of red, yellow and green.
6. The protection device of any one of claims 1 to 4, wherein said power supply device is an accumulator.
7. The protection device for adhesive tape machine of claim 5, wherein said power supply device has a charging interface.
8. The protection device for the adhesive tape machine of any one of claims 1 to 4, wherein both of the second opening and closing contacts are connected to the circuit board of the limit switch.
9. The protection device for the adhesive tape machine of any one of claims 1 to 4, further comprising an integrated protective instrument for the adhesive tape machine connected to the circuit board of the limit switch.
10. The protective device of the tape machine of claim 9, further comprising a controller connected to the integrated protective device of the tape machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122363722.1U CN215796647U (en) | 2021-09-28 | 2021-09-28 | Protective device of adhesive tape machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122363722.1U CN215796647U (en) | 2021-09-28 | 2021-09-28 | Protective device of adhesive tape machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215796647U true CN215796647U (en) | 2022-02-11 |
Family
ID=80167517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122363722.1U Active CN215796647U (en) | 2021-09-28 | 2021-09-28 | Protective device of adhesive tape machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215796647U (en) |
-
2021
- 2021-09-28 CN CN202122363722.1U patent/CN215796647U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107102232B (en) | Portable analog circuit breaker | |
| CN205051440U (en) | Breaker closing control circuit monitoring system that breaks | |
| CN105158684A (en) | Intelligent circuit breaker fault display method, intelligent circuit breaker and fault recognition terminal | |
| CN215796647U (en) | Protective device of adhesive tape machine | |
| CN207424194U (en) | A kind of test equipment for simulating Distribution Network Load Data switch | |
| CN203350305U (en) | Analog circuit breaker | |
| CN218787859U (en) | Liquid level alarm device for water resistance cabinet | |
| CN208955743U (en) | A kind of automatic transfer switch controller and its functional module | |
| CN204925351U (en) | Permanent magnetism switch function testing arrangement | |
| CN202103279U (en) | Multifunctional power line apparatus | |
| CN215481360U (en) | Current control device of rectifier | |
| CN211856644U (en) | Analog switch circuit based on distribution automation terminal test | |
| CN202676340U (en) | Relay contact pressure detection mechanism | |
| CN209248300U (en) | Collision impact testing stand robot control system(RCS) | |
| CN203759489U (en) | Lamp belt type numerical control system state display device | |
| CN205832453U (en) | Fire-fighting self-inspection cabinet | |
| CN212083966U (en) | Energy management and control center integrated energy-saving device | |
| CN104833892A (en) | 35kV power substation inlet wire live-line state alarm monitor | |
| CN210297345U (en) | UPS power automatic switching circuit | |
| CN211015788U (en) | Visual single-machine circuit of secondary screen cabinet alarm signal of transformer substation | |
| CN211425846U (en) | Life tester of gas well intelligent switching well device | |
| CN208796107U (en) | A kind of diagnostic device of low pressure controller | |
| CN203312074U (en) | Safety switch with on-off indication lamp and protective cover detection system | |
| CN213517932U (en) | Working mode switching device of valve control equipment of direct-current transmission converter valve | |
| CN218450625U (en) | Tunnel emergency lighting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |