CN219688454U - Pull switch with audible and visual alarm function - Google Patents

Abstract

A pull switch with audible and visual alarm function belongs to the technical field of belt conveyor intelligent protection, and overcomes the defects that the prior art does not have audible and visual alarm function, the failed pull switch cannot be accurately positioned, the processing time is too long, the production efficiency is affected, and the problems that the audible and visual alarm function is weaker are solved.

Description

Pull switch with audible and visual alarm function

Technical Field

The utility model belongs to the technical field of intelligent protection of belt conveyors, and particularly relates to a pull rope switch with an audible and visual alarm function, which enables the belt conveyor to stop an emergency through rope actions and give an alarm.

Background

The pull-cord switch is mainly used for emergency stop of the belt conveyor. When the belt conveyor is in an abnormal state on the operation site, the operation of the belt conveyor can be stopped rapidly by using the pull switch, so that faults can be removed conveniently and timely, the expansion of accidents can be avoided, and the safety of personnel or equipment can be protected.

The present inventors have disclosed "a pull switch with a manual self-locking action mechanism" in the utility model of application number CN201410015151.4 (grant notice number CN 103745865B). The utility model is characterized in that a manual self-locking action mechanism is arranged on a shell, a right trapezoid groove, an L-shaped positioning groove, a first positioning pin hole, an annular sealing groove, a rectangular plane and a thin shaft section with threads are processed on a main shaft of the manual self-locking action mechanism, a main shaft sealing gasket sleeve and a supporting arm are arranged on the main shaft, the large end of the supporting arm is fixedly connected with the shell, a sliding block fixedly connected with the main shaft is arranged in the supporting arm, a torsion spring is arranged on the main shaft, a positioning cylindrical pin for axially moving and positioning the L-shaped positioning groove and radially rotating and positioning is arranged on the shell, a transparent window is arranged on a front cover, and a cable joint is arranged on the bottom surface of the shell. However, the pull-cord switch is operated by searching the fault pull-cord switch through the position code on the display screen of the comprehensive protection instrument, the pull-cord switch does not have an audible and visual alarm function, and the problem is that the fault pull-cord switch cannot be directly displayed, the fault pull-cord switch is required to be searched through the position code on the display screen of the comprehensive protection instrument, the searching time is influenced, and the fault pull-cord switch is not easy to perceive after the pull-cord switch is operated or when the inside of the pull-cord switch is in fault, for example, in the production process, when the belt is stopped due to automatic disconnection of the pull-cord switch caused by ageing, vibration and other reasons, the inside of the pull-cord switch cannot be known, the fault of the pull-cord switch needs to be checked one by one, the fault pull-cord switch is recovered one by one, the processing time is too long, and the on-site production efficiency is influenced. Because staff can not in time get rid of the stay cord switch that has the trouble, just so there is the hidden danger that threatens the safety in production.

The utility model discloses a conveyer belt pull switch with a flashing indicator lamp, which relates to a conveyer belt protection device and solves the technical problems that after an emergency stop is carried out on the existing conveyer belt pull switch, searching for an action switch is time-consuming and labor-consuming and faults cannot be handled in time. The utility model of application number CN201922374490.2 discloses a belt conveyor pull-switch alarm circuit and a protection system and device, comprising a rectifier, a contactor coil and a pull-switch alarm module; the input end of the rectifier is connected with alternating current, a contactor coil is connected between the rectifier and the live wire, and alarm modules at two ends of the pull switch are respectively connected with the input end and the output end of the rectifier; the pull-cord switch alarm module comprises a pull-cord switch and an audible and visual alarm which are connected in parallel. When the pull-cord switch is broken, automatic bypass of current and automatic audible and visual alarm can be realized, the problem that the pull-cord switch is difficult to find after acting is solved, the maintenance efficiency of the pull-cord switch is improved, and the reliability and safety of belt operation are improved. However, the 2 utility models are all that a hole is formed in the shell, a diode flashing indicator lamp or an audible and visual alarm with the model of LTE-1101J is arranged at the hole, and the alarm device only has the functions of simultaneously emitting simple alarm sound and flashing and lighting of the alarm lamp and has weaker alarm function.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, improves the utility model with the application number of CN201410015151.4, provides the pull-cord switch with the audible and visual alarm function, and sends out audible and visual alarm and programmable voice prompt when the pull-cord switch fails in use, so that the pull-cord switch with the failure is positioned accurately, the time for overhauling the pull-cord switch is saved, and the working efficiency is improved.

The technical scheme includes that the LED lamp comprises a shell, a front cover, a main shaft, an indication board, a pull ring, a supporting arm and a circuit board, wherein a transparent window is arranged on the front cover, a lamp wire threading opening and a lamp cover connecting screw mounting hole are formed below the transparent window, a warning lamp component is arranged on the outer wall of the front cover corresponding to the lamp wire threading opening and the lamp cover connecting screw mounting hole, the warning lamp component comprises a lamp cover, an LED control board and an LED lamp, a sheet-shaped loudspeaker is arranged in the shell and clung to the rear wall of the shell, and a loudspeaker sounding hole penetrating through the wall thickness of the shell is formed in the bottom wall of the shell corresponding to the playing position of the sheet-shaped loudspeaker.

The pull switch control circuit installed on the circuit board comprises a microprocessor, an address dial switch, a CAN bus communication module, a power module and a wiring terminal, wherein the input end of the microprocessor is respectively connected with the address dial switch, a first travel switch, a second travel switch, a stop return line and a stop input line, the first travel switch is also connected with the stop input line at the same time, the serial port of the microprocessor is connected with the communication interface of the CAN bus communication module, the input end of the CAN bus communication module is connected with the communication interface of the CAN bus communication module at the upper stage through the CAN bus communication line, the input end of the power module is connected with the power interface at the upper stage through the power line, the CAN bus communication line, the stop return line and the stop input line are respectively connected with the wiring terminal, the wiring terminal is also used for being connected with an incoming line cable, the output end of the microprocessor is also respectively connected with the voice recognition module and the LED control board, the LED control board is connected with the LED lamp, and the voice recognition module is connected with the sheet loudspeaker.

The LED control panel is provided with a lamp shade connecting screw through hole, a threaded hole is formed in the lamp shade, the lamp shade connecting screw penetrates through a lamp shade connecting screw mounting hole in the front cover and a threaded hole in the lamp shade connecting screw through hole to be in threaded connection with the threaded hole in the lamp shade, the LED control panel is provided with an LED lamp, and a lead wire of the LED control panel is LED into the shell through a lamp wire threading hole to be connected with a microprocessor on the circuit board.

The loudspeaker is pressed by the loudspeaker pressing plate and is locked and fixed by the loudspeaker connecting screw.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The utility model integrates voice alarm and audible and visual alarm, can be directly connected into a 24V power supply for work, when the pull-cord switch fails, the pull-cord switch is stopped emergently and sends out alarm reminding, the failed pull-cord switch can be positioned accurately, the failed pull-cord switch is displayed directly, the fault is removed conveniently and effectively in time, the expansion of the accident is avoided, the delay of the production progress is avoided effectively, the maintenance efficiency of the pull-cord switch is improved, and the reliability and the safety of the belt conveyor are improved.

(2) The utility model has the advantages that the lamp wire threading port and the lamp shade connecting screw mounting hole are processed below the transparent window of the front cover, so that the warning lamp assembly can be mounted on the front cover, and the loudspeaker sound emitting hole penetrating through the wall thickness of the shell is processed on the bottom wall of the shell, so that the utility model can mount the sheet loudspeaker in the shell, thereby having simple and compact structure and realizing miniaturization and light weight.

Drawings

Figure 1 is a front view of the present utility model,

figure 2 is a bottom view of figure 1,

figure 3 is a cross-sectional view A-A of figure 1,

figure 4 is a cross-sectional view of B-B of figure 1,

figure 5 is a cross-sectional view of figure 1 at C-C,

fig. 6 is a block diagram of the circuit configuration of the present utility model.

In the figure:

1. pull ring, nut, washer, indicator plate,

5. a main shaft, a supporting arm and a transparent window,

8. a warning light assembly, a warning,

8-1, a lampshade, 8-2, an LED control board, 8-3, an LED lamp, 8-4, a lampshade connecting screw,

9. the front cover is connected with a screw,

10. a front cover is arranged on the front side of the front cover,

10-1, a lamp wire threading port, a lamp shade 10-2 is connected with a screw mounting hole,

11. a waterproof joint is arranged on the inner wall of the water-proof joint,

12. the shell body is provided with a plurality of grooves,

12-1, a loudspeaker sound outlet hole, 12-2, a travel switch support, 12-3, a circuit board support,

13. a circuit board, 14. A flat speaker,

15. a speaker press plate, 16, a speaker attachment screw,

101. a microprocessor, a 102.CAN bus communication module,

103. a power module, 104. An address dial switch,

105. a first travel switch, 106, a second travel switch,

107. the power cord, 108, the power interface,

a communication interface of a CAN bus communication line, a 110 CAN bus communication module,

111. a shutdown input line, 112, a shutdown return line,

113. speech recognition module 114. Terminal.

Description of the embodiments

As shown in fig. 1 to 5, the utility model comprises a shell 12, 4 waterproof joints 11 are arranged on the bottom surface of the shell 12, main shaft holes are symmetrically processed on the shell walls on the left side and the right side of the shell 12, an indicating plate 4 and a pull ring 1 are respectively arranged on a main shaft 5 penetrating through the main shaft holes on the left side and the right side, and the indicating plate 4 and the pull ring 1 are fastened with the main shaft 5 by nuts 2 and washers 3; the main shaft 5 is provided with a supporting arm 6, the supporting arm 6 is fixedly connected with the shell 12 through screws, a travel switch support 12-2 for installing a travel switch and a circuit board support 12-3 for installing a circuit board are further arranged in the shell 12, the circuit board support 12-3 is fixedly connected with a circuit board 13 with a digital display screen through a short screw 25, the shell 12 is provided with a front cover 10, the front cover 10 is provided with a rectangular opening and is provided with a transparent window 7 for observing the display state of the digital display screen in the shell 12, a sealing gasket is arranged between the front cover 10 and the shell 12 and is tightly pressed and fixed through a front cover connecting screw 9, a rectangular lamp wire threading opening 10-1 and a lamp cover connecting screw mounting hole 10-2 are formed below the transparent window 7, a warning lamp assembly 8 is arranged on the outer wall of the front cover 10 corresponding to the lamp wire threading opening 10-1 and the lamp cover connecting screw mounting hole 10-2, the warning lamp assembly 8 comprises a lamp cover 8-1, an LED control panel 8-2 and an LED lamp 8-3, wherein the LED lamp cover 8-2 is provided with a transparent window 7 for observing the display state of the digital display screen in the shell 12, the lamp cover is connected with the lamp cover through the lamp threading opening 10-1 and the LED lamp cover 8-2 through the lead wire connecting screw mounting hole 10-1-2, the LED lamp assembly is connected with the LED lamp assembly through the threaded hole 2-1-2 and the lead wire through the threaded hole 2-1-3, and the LED lamp assembly is connected with the front cover through the threaded hole 10-1-2-through the threaded hole and the threaded hole on the front cover mounting screw-control panel and the threaded hole 2-control panel-2; 2 sheet-like speakers 14 are mounted in the housing 12 closely to the rear wall of the housing, and are pressed by speaker pressing plates 15, and are locked and fixed by speaker connecting screws 16, and speaker sound outlet holes 12-1 penetrating the wall thickness of the housing are formed in the bottom wall of the housing 12 corresponding to the sound reproduction positions of the 2 sheet-like speakers 14.

As shown in fig. 6, the pull-cord switch control circuit installed on the circuit board 13 includes a microprocessor 101 with a type PIC18F25K80, an address dial switch 104, a CAN bus communication module 102, a power module 103, and a connection terminal 114, where the input end of the microprocessor 101 is connected to the address dial switch 104, the first travel switch 105, the second travel switch 106, the stop return line 112, and the stop input line 111, the first travel switch 105 is also connected to the stop input line 111, the serial port of the microprocessor 101 is connected to the communication interface of the CAN bus communication module 102, the input end of the CAN bus communication module 102 is connected to the communication interface 110 of the upper stage CAN bus communication module through the CAN bus communication line 109, the input end of the power module 103 is connected to the upper stage power interface 108 through the power line 107, the CAN bus communication line 112, and the stop input line 111 are connected to the connection terminal 114, and the connection terminal 114 are also used to be connected to the cable incoming lines, on the basis of the above, the output end of the microprocessor 101 is also connected to the voice recognition module 113 and the LED 8-2, the LED 8-2-3 and the LED 14-2 are connected to the LED 14-3.

When the intelligent control system is used, the intelligent control system is fixed on two sides of a rubber belt conveyor, steel wire ropes are fixed on pull rings 1 on the left side and the right side, the integrated protection instrument with CAN bus communication is connected through a cable installed on a waterproof connector 11, the operation process of the pull switch control circuit is that a microprocessor 101 reads codes of an address dial switch 104 as unique addresses of the local pull switches, and detects working states of a first travel switch 105, a second travel switch 106, a shutdown return line 112 and a shutdown input line 111, when an upper computer (PLC or PC) inquires about the local addresses of the pull switches through a standard communication protocol ModbusRTU protocol, the microprocessor 101 sends the states of the local pull switches to the upper computer through an interface of a CAN bus communication module 102; the power module 103 converts the input 24V direct current voltage into 5V direct current voltage for a power supply of a pull switch control circuit, when the belt conveyor has abnormal conditions in the operation process, a steel wire rope connected to the pull plate 4 can be pulled at any position along the belt conveyor, the pull plate 4 drives the main shaft 5 to rotate, so that the first travel switch 105 and the second travel switch 106 arranged on the main shaft 5 act, the normally open or normally closed contact conversion is realized, namely the emergency stop or start-up is realized, and meanwhile, an address coding signal is output; on the basis, after the pull-cord switch acts or when faults occur in the pull-cord switch, fault information is output through the CAN bus and is transmitted to the comprehensive protection instrument of the adhesive tape machine with CAN bus communication of the upper computer, and when the pull-cord switch is stopped, the sheet-shaped loudspeaker 14 sends out voice alarm of the action, reset and fault positions of the pull-cord switch through the loudspeaker sound outlet 11 penetrating through the wall thickness of the shell, and the LED lamp blinks to give out light to warn workers to pay attention to safety, and meanwhile, the fault pull-cord switch is accurately positioned, so that maintenance time is saved, and working efficiency is improved.

Claims (4)

1. The utility model provides a pull-cord switch with audible and visual alarm function, includes casing (12), protecgulum (10), main shaft (5), instruction board (4), pull ring (1), support arm (6) and circuit board (13) install transparent window (7) on protecgulum (10), its characterized in that the below processing of transparent window (7) has lamp line through wires mouth (10-1) and lamp shade connecting screw mounting hole (10-2), and warning light subassembly (8) are installed to the outer wall of protecgulum (10) of corresponding lamp line through wires mouth (10-1) and lamp shade connecting screw mounting hole (10-2) department, warning light subassembly (8) include lamp shade (8-1), LED control panel (8-2) and LED lamp (8-3), hug closely casing back wall in casing (12) and install sheet speaker (14), are processed on the casing (12) diapire that corresponds the playback position have speaker sound hole (12-1) of wall thickness through the casing.

2. The pull-cord switch with audible and visual alarm function according to claim 1, wherein the pull-cord switch control circuit installed on the circuit board (13) comprises a microprocessor (101) and an address dial switch (104), a CAN bus communication module (102), a power module (103) and a connection terminal (114), wherein the input end of the microprocessor (101) is respectively connected with the address dial switch (104), a first travel switch (105), a second travel switch (106), a stop return line (112) and a stop input line (111), the first travel switch (105) is also connected with the stop input line (111), the serial port of the microprocessor (101) is connected with the communication interface of the CAN bus communication module (102), the input end of the CAN bus communication module (102) is connected with the communication interface (110) of the CAN bus communication module of the previous stage through the CAN bus communication line (109), the input end of the power module (103) is connected with the power interface (108) of the previous stage through the power line (107), the CAN bus communication line (109) and the stop return line (111) and the stop input terminal (114) are respectively connected with the connection terminal (114), the output end of the microprocessor (101) is also connected with a voice recognition module (113) and an LED control board (8-2) respectively, the LED control board (8-2) is connected with an LED lamp (8-3), and the voice recognition module (113) is connected with a sheet loudspeaker (14).

3. The pull-cord switch with the audible and visual alarm function according to claim 2, wherein a lamp cover connecting screw through hole is formed in the LED control board (8-2), a threaded hole is formed in the lamp cover (8-1), the lamp cover connecting screw (8-4) penetrates through the lamp cover connecting screw mounting hole (10-2) in the front cover (10) and the lamp cover connecting screw through hole to be in threaded connection with the threaded hole formed in the lamp cover (8-1), an LED lamp (8-3) is mounted on the LED control board (8-2), and a lead wire of the LED control board (8-2) is LED into the shell (12) through a lamp wire threading hole (10-1) to be connected with the microprocessor (101) on the circuit board (13).

4. Pull-cord switch with audible and visual alarm function according to claim 1 or 2, characterized in that the loudspeaker (14) is pressed by a loudspeaker pressing plate (15) and locked and fixed by a loudspeaker connecting screw (16).