CN1298836A - Anti-overrun unit with digital indication for lifting cage of elevator - Google Patents

Abstract

The present invention relates to a device capable of preventing moving over-range (striking top or exceeding bottom) of lifting cage of an elevator and a device capable of showing the storey number of the moving lifting cage in the operation. It can avoid unsafe accident, improve operating efficiency, save time and electric energy, etc.

Description

But cage of elevator is prevented the surpassed distance digital display device

The present invention relates to a kind of cage of elevator that can prevent and move the device of surpassed distance and the read out instrument of number of floor levels (or height or distance) up and down, belong to mechanical safety in production, improve the effect up-to-date technology.

Nearly three during the last ten years, operation superelevation inhibiting device on the cage of elevator, the superelevation breaker device of the indoor elevator of employing that has, facts have proved, this device often brings out new more major accident, and unsuitable camp site clearly offers a negation in the JGJ59-99 of the Ministry of Construction construction safety standard.Over past ten years, some more strong construction enterprises adopt time or stroke relay, and solve the lifting cage and moved the surpassed distance problem up and down, but because the camp site environment is abominable, dust, rainwater replaces, and electric elements are often malfunctioning, simultaneously, be contained in the contact that promotes on the cage top and be contained in electrical equipment knob on the floor not at one accurately on the vertical line, bad to moderate, relay is relay not often, performs practically no function.Number of floor levels Presentation Function as for elevator, from over more than 60 year of its appearance, be blank always, bring great inconvenience to operating personal, one architecture construction of building more than 8 layers, or narrow scene, promote the every work of cage once accurately floor stop, all need repeatedly several times lifting action could be target-seeking time-consuming, take.Simultaneously, show, often cause the lifting cage to move surpassed distance up and down owing to lack number of floor levels.

The objective of the invention is (being the improvement of my 972462503 patents, is dividing an application of 001191101 patent) provides a kind of because of operating out of control or malfunctioning switch elevator function is cut off the power supply automatically, promotes cage and does not understand surpassed distance up and down; And synchronous demonstration number of floor levels is arranged, make to promote the device that cage can be done accurate stop.

The object of the present invention is achieved like this: be provided with the drving sprial pair parallel with it above the winch rope roll, by sprocket wheel, chain barrel and drving sprial pair are moved simultaneously, driving nut both ends of the surface clamping plate, clamping plate tops and about respectively stretch out contact, the secondary top of drving sprial is provided with the switch support beam, an end is equipped with bell switch and circuit breaker below the beam, the other end is equipped with bell switch, the secondary side of drving sprial is equipped with the number of floor levels telltale, and join by circuit and operator's station number of floor levels display lamp, opposite side is equipped with Location guide.These members are formed anti-surpassed distance of lifting cage and number of floor levels display system.

The concrete structure of invention is provided by following embodiment and accompanying drawing thereof:

Fig. 1 is structure of the present invention, constructional drawing.

Fig. 2 is a complementary views of the present invention, and the A that also is Fig. 1 is to view.

Fig. 3 is an operator's station allomeric function of the present invention, structural representation.

Among Fig. 1,1; chain wheel cover 2; sprocket wheel 23; bearing and seat 4; fastening; regulate bolt 5; switch support beam support 6; bell switch 7; fastening; setting nut and bolt 8; worm drive auxiliary box body 9; switch support beam 10; drive screw 11; driving nut clamping plate 12; driving nut 13; driving nut clamping plate 14; floor indicator 15; fastening; regulate bolt 16; fastening; setting nut 17; bell switch 18; the circuit breaker knob is followed protector 19; fastening; regulate bolt 20; fastening; setting nut 21; circuit breaker 22; switch support beam support 23; bearing and seat 24; transmission case body hinge 25; tension wheel and mechanism's group 26 thereof; winch drop-gear box 27; drving sprial secondary transmission case back plate 28; winch coupler 29; winch chassis 30; number of floor levels telltale piano type break-make sheet 31; charged 32 of number of floor levels telltale; driving nut avris contact and magnet steel 33; winch rope roll 34; driving nut avris contact and guide rod 35; barrel supporting base 36; drving sprial secondary transmission case back plate 37; bearing and seat 38; sprocket wheel 139; chain

In Fig. 1, winch drop-gear box (26) action, winch rope roll (33) rotates, drive sprocket wheel 1 (38) chain (39) and drive sprocket wheel 2 (2) again, the winch rope roll turns around, drive screw (10) turns over 1 tooth or X tooth, driving nut (12) follows driving nut avris contact and guide rod (34) moving linearly, when the running of winch rope roll, when promoting cage rising (or decline), driving nut avris contact and magnet steel (32) attract strong formula break-make sheet (30) of number of floor levels telltale qin and number of floor levels telltale charged (31) to connect one by one, demonstrate number of floor levels on the operator's station one by one, make the operator can be timely, accurately will promote cage and be accommodated to the work floor.Malfunctioning or operate out of control when the operator's station button; driving nut continues straight ahead; driving nut clamping plate (13) touch bell switch (17); remind the operator to press stop button; if out of control once more, these clamping plate hit the circuit breaker knob and follow protector (18), and circuit breaker (21) closes winch and electrical motor decommissions; promote cage and stop to rise, reach crashproof top purpose.Vice versa, promotes cage and descend when getting over the limit, and driving nut clamping plate (11) touch and close bell switch (6) knob, remind the operator by stopping knob, if out of control once more, can rupturing operation platform independent power source switch, electrical motor decommissions, and reaches to prevent to promote the cage decline purpose of the limit more.About two bell switch with open circuit electrical equipment can be according to construction building object height degree in switch support beam adjusted spacing, when if switch knob and the collision of driving nut clamping plate upper contact head highly are not suitable for, can regulate fastening, regulate bolt (4) or fastening, setting nut and bolt (7) or fastening, regulate bolt (15) or fastening, setting nut (16) or fastening, regulate bolt (19) or regulate fastening, when setting nut (20) is revised every building building story height difference is arranged, or winch barrel diameter, cable diameter has difference to cause linear velocity not simultaneously, can adjust the spacing of telltale piano type break-make sheet at the construction field (site) revises,, can change the sprocket wheel speed ratio and satisfy it when not enough the spiral number of drive screw.The worm drive auxiliary box body needs repairing, refuels, regulates in (8), can open by three hinges (24) bonded assembly case lid, and the chain between sprocket wheel keeps moderate by tension wheel (25), and by the anti-sealing pouring of chain wheel cover (1), dust invasion and attack.

Among Fig. 2,1, dial beam hanger 2, wire hole 3, wire hole and hide water eaves 4, winch drg 5, electrical motor 6, entrance hole 7, entrance hole and hide water eaves 8, dial beam hanger

In Fig. 2, when the worm drive subtask, dialling beam hanger (1) (8) upwards dials machine oil at the bottom of the case respectively, lubricating screw transmission and two end axles bearing bearing, each power lead is received on bell switch, circuit breaker and the number of floor levels telltale from entrance hole (6), receive on variable-frequency governor or the electrical motor from wire hole (2) again, hide water eaves (3) (7) and prevent that rainwater from drenching in the transmission case body.

Among Fig. 3,1; operator's station cover lock button 2; operator's station loam cake 3; number of floor levels display lamp 4; promote cage rising signals lamp 5; promote cage dropping signal lamp 6; operator's station folding pipe link 7; hinge 8; earth leakage protective device 9; relay 10; operator's station body 11; low-tension transformer 12; variable-frequency governor 13; vent window line outlet 14; connection box 15; rising knob 16; shut down knob 17; decline knob 18; move display lamp 19 fast; number of floor levels display lamp 20; convertible frequency control knob 21; middling speed operation display lamp 22; inferior slow running display lamp 23; slow running knob 24; slow running display lamp 25; inlet wire breather port 26; independent power source switch 27; the overweight signal head of refusing to take passengers.

In circle 3; operator's station (10) is received zero load or underloading or heavy duty or super-heavy load signal; or behind rising or the dropping signal; promote cage rising display lamp (4) or promote cage decline display lamp (5) or fast display lamp (18) or middling speed display lamp (21) or inferior display lamp at a slow speed (22) or at a slow speed display lamp (24) can make demonstration respectively; the operator is according to these shows signal; rotate a certain speed display lamp of convertible frequency control knob (20) arrow alignment earlier; again according to number of floor levels display lamp (3) and lifting cage rising signals (4) or lifting cage dropping signal (5); again by rising knob (15) or decline knob (17); when number of floor levels display lamp (19) demonstrates the floor that promotes cage operation process one by one; the operator will be before the lifting cage will arrive the point of destination of this operation; press knob (23) the most at a slow speed immediately; when the steady stop of lifting cage is arrived at a station; press and shut down knob (16); if show the signal (27) of refusing to take passengers on the operator's station, the operator refuses start; make it unload and subtract material.Various signal power sources enter connection box (14) output after all passing through low-tension transformer (11) voltage stabilizing on the operator's station; earth leakage protective device (8) and independent power source switch (26) and variable-frequency governor (12) are according to the electric operation specification handles; per tour work finishes; operator's station loam cake (2) is the center with hinge (7); follow operator's station loam cake folding pipe link (6) lid and hold together, by operator's station snap close (1) locking.

Claims (2)

1, anti-surpassed distance of a kind of cage of elevator and number of floor levels read out instrument; It is characterized in that: above winch fly tube, be provided with the drving sprial pair parallel with it, by sprocket wheel, chain barrel and drving sprial pair are moved simultaneously, driving nut both ends of the surface clamping plate, clamping plate top and about respectively stretch out contact, the secondary top of drving sprial is provided with the switch support beam, beam down and an end is equipped with bell switch and circuit breaker, the other end is equipped with bell switch, the secondary side of drving sprial is equipped with floor indicator, and join by circuit and operator's station number of floor levels display lamp, opposite side is equipped with Location guide.

2, anti-surpassed distance of cage of elevator according to claim 1 and number of floor levels showing device, it is characterized in that: be provided with operator's station, operator's station is provided with variable-frequency governor and convertible frequency control knob thereof, rise, descend, stop and the low speed knob speed display lamp, number of floor levels display lamp, lifting instruction display lamp, overload refusal signal head, independent power source switch, low-tension transformer, relay, connection box.

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