CN2934183Y - Electric hoister inclined-pulling preventing SCM circuit control box - Google Patents

Abstract

This utility model discloses a electric hoist anti-slanting-pull single-piece machine circuit control box, which includes an electric block, a roller inner winding wire rope, a descent AC contactor 11, a left-running AC contactor 12, a right-running AC contactor 13, a power-off position limiter 14, a line bank 15, a sensor module 16 controlling slanting-pull power-off, a single-piece machine box circuit 17, a position limiter 18, a control button 19, and an up/down motor 20. Wherein the wire rope on the fixed end of the wire-rope winding drum housing of the electric hoist penetrates into a curved-surface body fitted with an anti-slanting-pull sensor 2. a sensor output lead 3 connects with a single-piece machine 4. The leading-out wires of the single-piece machine 4 are separately connected with a slide switch 5, another conducting wire and a small-size relay 6 by conducting wires, together with a normally closed contact input 9 and a normally closed contact output 10 of an ascent AC contactor 8, constitute a normal hoisting loop. The adopting of the single-piece machine for controlling the wire rope to prevent a slanting pull has the advantages of that the device can effectively, reliably receive, and correctly process pulse signals coming from the sensor.

Description

Electric hoist inclined-pulling preventing SCM circuit control box

Technical field:

The utility model relates to a kind of electric block when promoting weight, operates against regulations and the anti-a kind of power-off control circuit case that tiltedly draws.

Background technology:

Existing electric block is when promoting weight, because out of plumb promotes or operative employee's error in judgement, operate and cause the damage of electric block rope guide against regulations, even the overlapping row of steel rope is around deviating from from reel, hold the reel axis body, make electric block self outer cover draw bad, scrap, even cause motor to damage.

Summary of the invention:

Task of the present utility model is to propose a kind of circuit control box and anti-oblique pull sensor assembly used, limiting device cooperates with electric block, can cut off the power supply reliably and prevent the electric block SCM circuit control box that sound and light alarm accurately is provided when tiltedly drawing violating the regulations, task of the present utility model is finished like this, electric hoist inclined-pulling preventing SCM circuit control box, it comprises electric block, lay winding wire ropes in the reel, decline AC contactor (11), left lateral AC contactor (12), right lateral AC contactor (13), outage limiting device (14), line bank (15), it is characterized in that: control inclination-proof circuit breaking electricity is sensor module (16), Single-chip Controlling case circuit (17), limiting device (18), control button (19), on/following motor (20) composition, steel rope on the electric block cable drum outer cover fixed end penetrates in the curved body that anti-oblique pull sensor (2) is housed, sensor output lead (3) is connected with micro controller system (4), micro controller system (4) is drawn lead and is connected with toggle switch (5) respectively, can divide the third gear time preset, another root lead and miniature relay (6) are exported lifting motor in (10) connection by the normally closed contact input (9) and the normally closed contact of lead and rising AC contactor (8), constitute current supply circuit, when the steel rope that twines in the reel tilts to surpass presetting angle, sensor (2) output closure signal, send micro controller system (4) to by lead, promptly judge impulse singla according to preset time, through judging that effectively connecting miniature relay (6) through lead makes it seal in rising AC contactor (8) and normally closed contact input (9) and normally closed contact output (10) bonded assembly loop disconnection, last lifting motor outage, another root lead on the micro controller system (4) is connected high-decibel combined aural and visual alarm (7) prompting and is tiltedly drawn warning simultaneously.The utlity model has following effect: adopt the Single-chip Controlling steel rope anti-tiltedly draw advantage to be can be effectively, the failure-free reception, the correct impulse singla of handling from sensor, and, cut off the rising motor power immediately through its judgement, examination, computing, output drive signal.

Description of drawings:

Fig. 1 is the circuit connection diagram of prior art electric block;

Fig. 2 is a circuit connection diagram of the present utility model;

Fig. 3 is a block scheme of the present utility model.

Drawing explanation: 1, steel rope, 2, sensor, 3, lead, 4, micro controller system, 5, toggle switch, 6, miniature relay, 7, combined aural and visual alarm, 8, the rising AC contactor, 9, normally closed contact input, 10, normally closed contact output, 11, the decline AC contactor, 12, the left lateral AC contactor, 13, right lateral AC contactor, 14, circuit fire stop, 15, line bank, 16 anti-oblique pull sensor assemblies, 17, Single-chip Controlling case circuit, 18, limiting device, 19, the control eletric button, 20, upper and lower motor.

The specific embodiment:

Describe embodiment in detail in conjunction with above accompanying drawing, decline AC contactor 11 as shown in Figure 1, left lateral AC contactor 12, right lateral AC contactor 13, circuit fire stop 14, line bank 15 is prior aries, do not remake bonded assembly description on the circuit, steel rope 1 on the electric block cable drum outer cover fixed end penetrates in the curved body that sensor 2 is housed, connect micro controller system 4 respectively from sensor 2 output leads 3, connect toggle switch 5 from micro controller system 4 output leads, can divide three retaining preset times, preset 16 periods, 600 milliseconds every section, micro controller system 4 is drawn output lead connection small relay 6 again, and rising motor formation current supply circuit is connected in the normally closed contact input 9 and the normally closed contact output 10 that seal in rising AC contactor 8 by lead, finishes normal lifting.When the normal lifting of electric block; because sensor 2 Triggerless; micro controller system detects less than impulse singla; the single-chip processor i/o mouth is output signal not; circuit is failure to actuate; the normal lifting of last lifting motor; when the electric block operation against rules takes place tiltedly to draw, when surpassing presetting angle 3-20 °, sensor 2 output closure signal; send micro controller system 4 to by lead; micro controller system 4 is promptly judged impulse singla, amplitude, time according to preset time; as calculated; relatively; when confirming that its impulse singla is effective; connect miniature relay 6 by output lead its normally closed contact that seals in rising AC contactor 8 input 9 and normally closed contact output 10 are disconnected, last lifting motor outage, micro controller system 4 is by another root output line conducting combined aural and visual alarm 7 anti-sound and light alarms that tiltedly draw simultaneously; thereby protected electric block effectively, prolonged normal service life.

Claims (1)

1, electric hoist inclined-pulling preventing SCM circuit control box, it comprises electric block, lay winding wire ropes in the reel, decline AC contactor (11), left lateral AC contactor (12), right lateral AC contactor (13), outage limiting device (14), line bank (15), it is characterized in that: control inclination-proof circuit breaking electricity is sensor module (16), Single-chip Controlling case circuit (17), limiting device (18), control button (19), on/following motor (20) composition, steel rope on the electric block cable drum outer cover fixed end penetrates in the curved body that anti-oblique pull sensor (2) is housed, sensor output lead (3) is connected with micro controller system (4), micro controller system (4) is drawn lead and is connected with toggle switch (5) respectively, can divide the third gear time preset, another root lead and miniature relay (6) are exported lifting motor in (10) connection by the normally closed contact input (9) and the normally closed contact of lead and rising AC contactor (8), constitute current supply circuit, when the steel rope that twines in the reel tilts to surpass presetting angle, sensor (2) output closure signal, send micro controller system (4) to by lead, promptly judge impulse singla according to preset time, through judging that effectively connecting miniature relay (6) through lead makes it seal in rising AC contactor (8) and normally closed contact input (9) and normally closed contact output (10) bonded assembly loop disconnection, last lifting motor outage, another root lead on the micro controller system (4) is connected high-decibel combined aural and visual alarm (7) prompting and is tiltedly drawn warning simultaneously.

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