Constant-speed retraction pipe coiling device with touch prompt function

Abstract

The invention relates to a constant-speed retraction pipe coiling device with a touch prompt function, which is additionally provided with the touch prompt function to meet the requirements of the market on safety and convenience, and a touch prompt circuit additionally arranged on the constant-speed retraction pipe coiling device with the touch prompt function consists of a monostable trigger circuit and a voice circuit; when a magnetic pipe blocking ball (72) arranged on a pipeline (GX) touches or touches a touch electrode plate A arranged at an outlet of the pipeline of the pipe coiling device by a hand, a magnetic induction signal or a human body induction signal enables a time-base integrated circuit IC1 to be triggered, and a loudspeaker BL gives out a voice prompt tone; when the touch electrode plate A is touched or touched once, the time base integrated circuit IC1 turns over for several seconds, and the voice circuit gives out voice prompt sound twice, so that the pipeline of the pipe coiling device works safely and conveniently.

Description

Technical Field

[0001] The present invention relates to a method for controlling irrigation water flow for environmental protection and gardening, a high-performance anti-fouling swing sprinkler and a water-saving method, an electromagnetic flowmeter and a circuit of an energy-saving new impeller suspension shaftless bracket for energy-saving agriculture and forestry irrigation, and a water-saving method, and also relates to a flow-adjustable dripper, a 360-degree nozzle, a joint with fine-adjustable thread ring size and pitch, and a combination with an energy-saving sprinkler timer and a water distributor provided with a multi-purpose interface, with the focus on an improved new quick connector with a water-stop structure and a tightening connector with a flexible worm groove safety belt, so as to overcome the long-standing problem that the existing non-locking quick connector cannot be used as a water suction pipe and the tightening connector with a flexible worm groove safety belt; the present invention relates to the technical field of pipeline retractor retraction devices, and in particular to a water-gas-electricity compatible multifunctional garden hose reel with a position locking mechanism that can be used for multiple damping of hoses or cables, with the focus on a touch-prompted uniform retraction hose reel. Background Art

[0002] The desire to pursue environmental protection and landscaping is endless; although the hose reel has the characteristics of strong structure, strong weather resistance, good cost performance and wide application, it is not very reliable to use due to its original structure and other problems. It often suffers from the long-standing problems of instability, rapid retraction and occasional jamming, and there are potential risks of long-term wear resistance and stability. In addition, due to structural problems, higher requirements are imposed on the precision of manufacturing tolerance matching, and Euler instability occasionally occurs during long-term use, and it is easy to rust and adhere over time, which hinders the movement; there is also a problem of sealing and leakage over time. In addition, the lateral deflection moment causes the rotating disk to tilt, which affects the effect. In summary, this type of product can be further improved. Considering that the inventor has been involved in the manufacture of certain devices as a senior engineer in foreign countries such as Switzerland and Israel, the improved and specially blended ones, supplemented by the invention, can make the product a higher level. But even if the reel and sprinkler are easy to use, it will not work if the interface is not good. In practice, some are pipe interfaces, while others are faucets without threads. The method of adding multiple interfaces has been used. It works for faucets and some interfaces, but not for many interfaces. The reason is that many interfaces in a garden have been worn or rusted, and the threads of many interfaces have been loose, and they cannot be connected or connected tightly. If they are connected, there will be leakage. The threads of many interfaces are similar but different threads are mixed together. It is not easy to replace a large number of interfaces. Even if they are replaced, many threads on the original water pipes have loose threads, and the replaced interfaces will also be worn or rusted. In addition, the new interfaces also have many problems such as upper or lower tolerances and over-tolerances, and cannot be connected or connected tightly, and loose threads. The market also hopes to further improve the filtering and epidemic prevention measures. Human exploration and innovation are endless. The market also needs a uniform retraction hose reel with half the spring to cooperate with the spray sprayer to promote new water-saving methods. In order to solve the long-standing problem of overflow regulation failure and unreliability, it is necessary to improve and innovate existing products. The present invention relates to the technical field of pipeline reel retraction devices, and in particular to a water-gas-electricity compatible multifunctional garden hose reel with a position lock mechanism that can be used to perform various damping on hoses or cables, and the focus is on a uniform speed retraction hose reel with touch prompts.The existing automatic hose reel for storing hoses or cables has a quarter-circle arc-shaped rack on the rotating lower plate, and a small gear meshing with the rack on the lower shell, and a toggle lever with a partial gear next to the small gear, which can only be toggled to work when the turntable is in a certain position. In addition, there are too many springs and springs and they are too rigid. When retracting the hose or cable, the spring retraction speed is sometimes too fast and too violent, causing the hose or cable to swing like a cosine wave and a Fourier curve during the retraction process, which sometimes causes personal injury and damage to the hose or cable and the joint. In addition, the existing automatic hose reel also has the long-standing problem that the operation of locking the hose or cable is difficult to control during use and is easy to get stuck due to insufficient reliability and stability. The introduction of a three-gear planetary carrier and an electronically controlled multi-wheel touch prompt uniform speed retraction hose reel is another better solution. Summary of the invention

[0003] In order to gradually improve the quality and automation of hose reel-type hose reeling machines, and solve the long-standing problem of the difficulty in controlling the locking operation of hoses or cables during use and the lack of reliable stability and easy jamming, the introduction and innovation of the three-gear planetary frame and the electronically controlled multi-wheel disc using planetary lithium battery recycling hose reeling machine is another better solution. The existing automatic hose reel for collecting hoses or cables has too many springs and springs and is too rigid. When retracting the hose or cable, the spring spring retracts too fast and too violently, causing the hose or cable to swing like a cosine wave and Fourier curve during the retraction process, which sometimes causes personal injury and damage to the hose or cable and the connector; in addition, the existing automatic hose reel also has the problem of difficulty in controlling the locking operation of the hose or cable during use and the lack of reliable stability. It has always been a long-standing problem in the industry to improve the spring spring to be light and not jammed. The main innovation of the uniform retracting hose reel with half the series spring is to reduce the rigidity of the spring and increase the flexibility, and to innovate the handle ball pile into a uniform retracting hose reel with a handle multi-ball sleeve multi-ball shaft end series spring with half the series spring to solve the problem of not getting stuck. The key innovation is that the rubber band half-coil spring spring is composed of a rubber band and a coil spring spring that is half thinner than the original coil spring spring in series, so as to reduce the thickness, reduce the rigidity and make it safer. The weaker series force is suitable for the uniform retracting hose reel with small hose specifications, so that when the first half circle is pulled less, the rubber band mainly plays a role in making it easy to pull and retract, and when the second half circle is pulled more, the rubber band saturated spring mainly plays a role in making the return force sufficient to ensure retraction, which is suitable for light and portable hose retractors. The three-gear planetary frame is now used to improve the practicality, stability and automation of the uniform retracting hose reel with multi-wheel discs driven by lithium batteries to reduce the speed of the motor and the electronic control, so as to meet the various needs of water supply and air supply in the morning and evening in production workshops, repair workshops, breeding rooms and greenhouses.

[0004] The technical problem of the present invention is achieved through the following technical solutions:

[0005] A touch prompt uniform speed retracting hose reel, characterized in that it is hung on a wall through a hanger (19) by a plurality of hose reels respectively equipped with pipelines (GX), hose blocking balls (72), and water discharge heads (71) and driven by motors (M) respectively controlled by automatic circuits. The motors (M) respectively controlled by automatic circuits driven by lithium batteries on each hose reel are decelerated through a three-gear planetary frame including a driving gear (73), a driven gear (74), a planetary frame (77), three planetary gears (76), an internal gear (77), and a sun gear (75) to make the pipeline wheel reel rotate forward and reverse to release and retract the pipe; the main control element of the automatic circuit driven by a DC motor (M) driven by a 9V lithium battery and capable of controlling a working voltage of nine volts The device comprises a first operational amplifier ICa and a second operational amplifier ICb of a dual integrated operational amplifier, a photoresistor RG, a first potentiometer RP1, and a second potentiometer RP2; in the early morning, the ambient light is strong, and the photoresistor RG is in a low resistance state, so that the voltage of pin 2 of ICa (the inverting input terminal of the amplifier ICa) is higher than the voltage of pin 3 (the non-inverting input terminal of the amplifier ICa), the voltage of pin 5 of ICb (the non-inverting input terminal of the amplifier ICb) is higher than the voltage of pin 6 (the inverting input terminal of the amplifier ICb), the pin 1 of the dual integrated operational amplifier is low level, and the pin 7 outputs a low level, so that the first NPN transistor V1, the second PNP transistor V2, and the third NPN transistor V3 are all turned on, and the fourth NPN Transistor V4, the fifth PNP transistor V5, and the sixth NPN transistor V6 are turned off, and the motor (M) rotates forward, driving the pipeline wheel to rotate forward to release the line; when the pipeline is pulled into place, the first contact switch S1 is triggered and turned on, so that the base of the first NPN transistor V1 becomes low level, the first NPN transistor V1, the second PNP transistor V2, and the third NPN transistor V3 are all turned off, and the motor (M) stops rotating; when night falls, the ambient light is weak, the resistance of the photoresistor RG increases, so that the voltage of pin 3 of ICa is higher than that of pin 2, and pin 1 of the dual integrated operational amplifier outputs a high level, so that the fourth NPN transistor V4, the fifth PNP transistor V5, and the sixth NPN transistor V6 are all turned on, and the motor ( M) reverses to drive the pipeline wheel to recover; when the pipeline is pulled into place, the second contact switch S2 is touched by the magnetic pipe stop ball (72) on the pipeline (GX) and is turned on, so that the base of the fourth NPN transistor V4 becomes low level, so that the fourth NPN transistor V4, the fifth PNP transistor V5, and the sixth NPN transistor V6 are all cut off, and the motor (M) stops rotating; the resistance values ​​of the first potentiometer RP1 and the second potentiometer RP2 are adjusted to change the voltage of the 2nd and 5th pins of the dual integrated operational amplifier, so that in the early morning, the 7th pin of the dual integrated operational amplifier outputs a high level and the 1st pin outputs a low level; and in the evening, the 1st pin of the dual integrated operational amplifier outputs a high level and the 7th pin outputs a low level; the contact switch can be manual;The uniform speed retracting hose reel with touch prompt is provided with touch prompt to meet the market demand for safety and convenience, and is characterized in that the touch prompt circuit provided with the uniform speed retracting hose reel with touch prompt is composed of a monostable trigger circuit and a voice circuit; the monostable trigger circuit is composed of a time base integrated circuit IC1, a touch electrode A, capacitors C1-C3 and a resistor R1, etc.; the voice circuit is composed of a voice integrated circuit IC2, a voltage regulator diode A, a resistor R2, a resistor R3, an audio amplifier transistor V and a speaker BL, etc.; the transformer T2 and the bridge rectifier D14 supply power to the touch prompt circuit. After the power supply S is turned on, the monostable trigger circuit enters a steady state, and the pin 3 of the time base integrated circuit IC1 outputs a low level, so that the pins 3 and 4 of the voice integrated circuit IC2 are All are low level, the audio amplifier transistor V is turned off, and the speaker BL does not make a sound; when the magnetic pipe stopper ball (72) installed in the pipeline (GX) touches or touches the touch electrode sheet A installed at the outlet of the pipe reel, the magnetic induction signal or the human body induction signal is added to the 2nd pin of the time base integrated circuit IC1 through the capacitor C1, with a value of 0.01μf, so that the time base integrated circuit IC1 is triggered and changes from a steady state to a transient state, and its 3rd pin outputs a high level, so that the 3rd and 4th pins of the voice integrated circuit IC2 are both changed to a high level, the audio amplifier transistor V is turned on, and the speaker BL emits a voice prompt sound; each time the touch electrode sheet A is touched or touched once, the time base integrated circuit IC1 flips for several seconds, and the voice circuit emits two voice prompt sounds, making the pipe reel pipeline work safe and convenient. ;

[0006] Benefits:

[0007] Improve the quality and automation level of tube reels, solve the long-standing problem of hose or cable locking being difficult to control and easy to get stuck due to insufficient reliability and stability, introduce and innovate three-gear planetary carrier and electronically controlled multi-wheel planetary lithium battery recycling tube reel, improve the practicality, stability and automation of lithium battery driven motor deceleration and electronically controlled multi-wheel planetary lithium battery recycling tube reel, to meet various needs. The uniform speed retracting hose reel with touch prompt is provided with touch prompt to meet the market demand for safety and convenience, and is characterized in that the touch prompt circuit provided with the uniform speed retracting hose reel with touch prompt is composed of a monostable trigger circuit and a voice circuit; the monostable trigger circuit is composed of a time base integrated circuit IC1, a touch electrode A, capacitors C1-C3 and a resistor R1, etc.; the voice circuit is composed of a voice integrated circuit IC2, a voltage regulator diode A, a resistor R2, a resistor R3, an audio amplifier transistor V and a speaker BL, etc.; the transformer T2 and the bridge rectifier D1-4 supply power to the touch prompt circuit. After the power supply S is turned on, the monostable trigger circuit enters a steady state, and the pin 3 of the time base integrated circuit IC1 outputs a low level, so that the pins 3 and 4 of the voice integrated circuit IC2 are The audio amplifier transistor V is turned off and the speaker BL does not make any sound. When the magnetic pipe stopper ball (72) arranged on the pipeline (GX) touches or the touch electrode sheet A arranged at the outlet of the pipe reel is touched by hand, the magnetic induction signal or the human body induction signal is added to the 2nd pin of the time base integrated circuit IC1 through the capacitor C1, with a value of 0.01μf, so that the time base integrated circuit IC1 is triggered to change from a steady state to a transient state, and its 3rd pin outputs a high level, so that the 3rd and 4th pins of the voice integrated circuit IC2 are both changed to a high level, the audio amplifier transistor V is turned on, and the speaker BL emits a voice prompt sound. Each time the touch electrode sheet A is touched or touched once, the time base integrated circuit IC1 flips for several seconds, and the voice circuit emits two voice prompt sounds, so that the pipe reel pipeline work is safe and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0009] Figure 1 , is a schematic diagram of a multi-wheel wall mounted uniform speed retraction hose reel with touch prompt.

[0010] Figure 2 , is a front view schematic diagram of a three-gear planet of a touch-sensitive uniform retraction hose reel.

[0011] Figure 3 , is a schematic diagram of a three-gear planetary uniform retraction hose reel with touch prompt.

[0012] Figure 4 , is a schematic diagram of a three-gear planetary carrier of a touch-sensitive uniform speed retraction hose reel.

[0013] Figure 5 , is a schematic diagram of a pipeline (GX), a pipe stopper ball (72), and a water discharge head (71).

[0014] Figure 6 , is a schematic diagram of the control motor circuit of the hose reel.

[0015] Figure 7 , is a schematic diagram of a touch prompt circuit of a uniform speed retracting hose reel with touch prompt.

[0016] As shown in the figure, in the figure:

[0017] IC1. Time base integrated circuit IC1,

[0018] A. Touch electrode A,

[0019] C1-C3. Capacitor C1-C3,

[0020] Resistor R1,

[0021] IC2. Voice integrated circuit IC2,

[0022] A. Zener diode A,

[0023] Resistor R2,

[0024] R3. Resistor R3,

[0025] V. Audio amplifier transistor V,

[0026] BL. Speaker BL,

[0027] T2. Transformer T2,

[0028] D1-4. Bridge rectifier D1-4,

[0029] S. Power supply S,

[0030] GX.Pipeline (GX),

[0031] 72.Ball blocking (72)

[0032] 71. Water discharge head (71),

[0033] M. Motor (M),

[0034] 19. Hanging rack (19),

[0035] 73. Driving gear (73),

[0036] 74. Driven gear (74),

[0037] 77. Planet carrier (77),

[0038] 76. Planetary gear (76),

[0039] 77. Internal gear (77),

[0040] 75. Sun gear (75),

[0041] ICa. The first operational amplifier ICa,

[0042] ICb. The second operational amplifier ICb,

[0043] RG. Photoresistor RG,

[0044] RP1. The first potentiometer PP1,

[0045] RP2. The second potentiometer RP2;

[0046] V1. The first NPN transistor V1,

[0047] V2. The second PNP transistor V2,

[0048] V3. The third NPN transistor V3,

[0049] V4. The fourth NPN transistor V4,

[0050] V5. The fifth PNP transistor V5,

[0051] V6. The sixth NPN transistor V6 is turned off,

[0052] S2. The second contact switch S2,

[0053] RP1. Adjust the first potentiometer RP1,

[0054] RP2. The second potentiometer RP2,

[0055] S1. First contact switch S1. DETAILED DESCRIPTION

[0056] The tube collecting machine can be operated by fixing it through a plurality of hangers (19) and connecting it to a water and gas pipeline and a water discharge head or a working head.

[0057] There is no end to improvement. The present invention hopes to adopt a three-gear planetary carrier to improve the practicality, stability and automation of the multi-wheel uniform retraction reel called touch prompt, which uses a lithium battery to drive the electric motor for deceleration and electronic control, so as to meet the various needs of production workshops, repair workshops, breeding rooms and greenhouses for morning and evening water and air supply and pursue high-end products.

[0058] The touch prompt uniform speed retracting hose reel has the following highlights: it is composed of a plurality of hose reels respectively equipped with pipelines (GX), pipe blocking balls (72), and water discharge heads (71) and driven by motors (M) respectively controlled by automatic circuits, which are hung on the wall through a hanger (19); the motors (M) respectively controlled by automatic circuits driven by lithium batteries on each hose reel are decelerated through a three-gear planetary frame including a driving gear (73), a driven gear (74), a planetary frame (77), three planetary gears (76), an internal gear (77), and a sun gear (75) to make the pipeline wheel reel rotate forward and reverse to release the line and retract the pipe; the main control element of the automatic circuit driven by the DC motor (M) driven by a 9V lithium battery and capable of controlling the working voltage to be nine volts The device comprises a first operational amplifier ICa and a second operational amplifier ICb of a dual integrated operational amplifier, a photoresistor RG, a first potentiometer RPI, and a second potentiometer RP2; in the early morning, the ambient light is strong, and the photoresistor RG is in a low resistance state, so that the voltage of pin 2 of ICa (the inverting input terminal of the amplifier ICa) is higher than the voltage of pin 3 (the non-inverting input terminal of the amplifier ICa), the voltage of pin 5 of ICb (the non-inverting input terminal of the amplifier ICb) is higher than the voltage of pin 6 (the inverting input terminal of the amplifier ICb), the pin 1 of the dual integrated operational amplifier is low level, and the pin 7 outputs a low level, so that the first NPN transistor V1, the second PNP transistor V2, and the third NPN transistor V3 are all turned on, and the fourth NPN Transistor V4, the fifth PNP transistor V5, and the sixth NPN transistor V6 are turned off, and the motor (M) rotates forward, driving the pipeline wheel to rotate forward to release the line; when the pipeline is pulled into place, the first contact switch S1 is triggered and turned on, so that the base of the first NPN transistor V1 becomes low level, the first NPN transistor V1, the second PNP transistor V2, and the third NPN transistor V3 are all turned off, and the motor (M) stops rotating; when night falls, the ambient light is weak, the resistance of the photoresistor RG increases, so that the voltage of pin 3 of ICa is higher than that of pin 2, and pin 1 of the dual integrated operational amplifier outputs a high level, so that the fourth NPN transistor V4, the fifth PNP transistor V5, and the sixth NPN transistor V6 are all turned on, and the motor ( M) reverses to drive the pipeline wheel to recover; when the pipeline is pulled into place, the second contact switch S2 is touched by the magnetic pipe stop ball (72) on the pipeline (GX) and is turned on, so that the base of the fourth NPN transistor V4 becomes low level, so that the fourth NPN transistor V4, the fifth PNP transistor V5, and the sixth NPN transistor V6 are all cut off, and the motor (M) stops rotating; the resistance values ​​of the first potentiometer RP1 and the second potentiometer RP2 are adjusted to change the voltage of the 2nd and 5th pins of the dual integrated operational amplifier, so that in the early morning, the 7th pin of the dual integrated operational amplifier outputs a high level and the 1st pin outputs a low level; and in the evening, the 1st pin of the dual integrated operational amplifier outputs a high level and the 7th pin outputs a low level; the contact switch can be manual.

[0059] In order to improve the quality and automation of tube reels and tube winding machines, and to solve the long-standing problem of the difficulty in controlling the locking operation of hoses or cables during use and the easy jamming due to insufficient reliability and stability, we have introduced and innovated tube reelers with three-gear planetary carriers and electronically controlled multi-wheel discs that use planetary lithium batteries for recycling, which improves the practicality, stability and automation of tube reelers with lithium battery-driven motor deceleration and electronically controlled multi-wheel discs to meet various needs. The uniform speed retracting hose reel with touch prompt is provided with touch prompt to meet the market demand for safety and convenience. The characteristic lies in that the touch prompt circuit provided with the uniform speed retracting hose reel with touch prompt is composed of a monostable trigger circuit and a voice circuit; the monostable trigger circuit is composed of a time base integrated circuit IC1, a touch electrode A, capacitors C1-C3 and a resistor R1, etc.; the voice circuit is composed of a voice integrated circuit IC2, a voltage regulator diode A, a resistor R2, a resistor R3, an audio amplifier transistor V and a speaker BL, etc.; the transformer T2 and the bridge rectifier D1-4 supply power to the touch prompt circuit. After the power supply S is turned on, the monostable trigger circuit enters a steady state, and the 3rd pin of the time base integrated circuit IC1 outputs a low level, so that the 3rd pin and 4th pin of the voice integrated circuit IC2 are The pins are both low level, the audio amplifier transistor V is turned off, and the speaker BL does not make any sound; when the magnetic pipe stopper ball (72) arranged on the pipeline (GX) touches or the hand touches the touch electrode sheet A arranged at the outlet of the pipe reel, the magnetic induction signal or the human body induction signal is added to the 2nd pin of the time base integrated circuit IC1 through the capacitor C1, with a value of 0.01μf, so that the time base integrated circuit IC1 is triggered and changes from a steady state to a transient state, and its 3rd pin outputs a high level, so that the 3rd and 4th pins of the voice integrated circuit IC2 are both changed to a high level, the audio amplifier transistor V is turned on, and the speaker BL emits a voice prompt sound; each time the touch electrode sheet A is touched or touched once, the time base integrated circuit IC1 flips for several seconds, and the voice circuit emits two voice prompt sounds, making the pipe reel pipeline work safe and convenient.

[0060] Key points:

[0061] The uniform speed retracting hose reel with touch prompt is provided with touch prompt in order to meet the market demand for safety and convenience. The touch prompt circuit provided with the uniform speed retracting hose reel with touch prompt is composed of a monostable trigger circuit and a voice circuit. When a magnetic pipe stopper ball (72) arranged on a pipeline (GX) touches or a hand touches a touch electrode sheet A arranged at the outlet of the hose reel pipeline, a magnetic induction signal or a human body induction signal triggers a time base integrated circuit IC1 and a speaker BL emits a voice prompt sound. Each time the touch electrode sheet A is touched or touched once, the time base integrated circuit IC1 flips for several seconds and the voice circuit emits two voice prompt sounds, so that the hose reel pipeline operation is safe and convenient.

Claims

1. The uniform speed retracting hose reel with touch prompt is equipped with touch prompt to meet the market demand for safety and convenience. It is characterized by: The touch prompt circuit added to the touch prompt uniform speed retracting hose reel is composed of a monostable trigger circuit and a voice circuit; the monostable trigger circuit is composed of a time base integrated circuit IC1, a touch electrode A, capacitors C1-C3 and a resistor R1; the voice circuit is composed of a voice integrated circuit IC2, a voltage regulator diode A, a resistor R2, a resistor R3, an audio amplifier transistor V and a speaker BL; the transformer T2 and the bridge rectifier D1-4 supply power to the touch prompt circuit. After the power supply S is turned on, the monostable trigger circuit enters a steady state, and the 3rd pin of the time base integrated circuit IC1 outputs a low level, so that the 3rd and 4th pins of the voice integrated circuit IC2 are both low levels, the audio amplifier transistor V is cut off, and the speaker B L does not make a sound; when the magnetic pipe stopper ball (72) arranged on the pipeline (GX) touches or the hand touches the touch electrode sheet A arranged at the outlet of the pipe reel, the magnetic induction signal or the human body induction signal is added to the 2nd pin of the time base integrated circuit IC1 through the capacitor C1, with a value of 0.01μf, so that the time base integrated circuit IC1 is triggered and changes from a steady state to a transient state, and its 3rd pin outputs a high level, so that the 3rd and 4th pins of the voice integrated circuit IC2 are both changed to a high level, the audio amplifier transistor V is turned on, and the speaker BL emits a voice prompt sound; each time the touch electrode sheet A is touched or touched once, the time base integrated circuit IC1 flips for several seconds, and the voice circuit emits two voice prompt sounds, so that the pipe reel pipeline work is safe and convenient.

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