CN2558633Y - Lifting cage falling preventing device for lifter - Google Patents

Abstract

The utility model relates to an anti-dropping device used for a lifter, which is installed on top of an elevating cage. A grooved straight tie bar is arranged at middle of an upper beam of an elevating cage; one end of pulley lifting shaft reaches the grooves and is drawn to the bottom of the straight tie bar by springs; right and left sides of the lifting pulley are articulated with upper end of a oblique tie bar; a long groove arranged on lower part of the lifting pulley is connected in no-key with two flat ends of a support seat of a rotating shaft arranged on two ends of the upper beam; a ram bar is positioned at the middle of the rotating shaft; the ram bar is connected with a tapered-wedge suspender of a security pincers positioned on lower part of the support seat external, so as to form an anti-dropping device. If steel wire is broken, two continuous motions are produced; one is that the tapered wedge is lifted by the security pincers to a guiding rail of the lifter frame, leading the lifting cage to be stopped at once; the other motion is that the oblique bar is extent from right and left for the beam of the lifting frame to lay on; the operation of the utility model is swift, reliable and accurate.

Description

Anti-drop device for lifting cage of elevator

It is disrumpent feelings and device that can not fall belongs to mechanical safety production technique that the utility model relates to a kind of cage of elevator invar rope that is in operation.

At present, known and become commercial construction hoist falling-proof dropping control device to have 2 kinds, a kind of is eccentric safety tongs, comes into the market only 2 years, because misoperation is many, is just refused by unit in charge of construction.Second kind is the wedge-type safety tongs that came out the year before last, disrumpent feelings when steel cable, and when promoting cage generation acceleration/accel whereabouts, wedge just vises guide rail, promote cage and fall about 150 millimeter of distance, seismaesthesia is big, and misoperation is arranged, during misoperation, it is unsettled inactive to promote cage, must go up people's hammer and open.Regulation according to GB10055-1996 building hoist safety rule: the regulation of " ... any safety all can not influence the normal operation of elevator ", obviously, and current commercially available falling proof device, all undesirable.

The applicant once mentioned the hoist falling-proof dropping control device in 96240537 patents; also once there was the building site of handing in kind to use in 98 years; running is more than 2 years; prove that it is functional; disconnected rope back can make and promote cage and stop and do not fall zero second; fall only 35 millimeters of strokes; yet; no matter simulate rope breaking test; or real breaking rope protecting, all be that fine day carries out, take place this year; the applicant specially did repeatedly check in different operating modes, found that 96240537 or 0024682.2 still has the imperfection part: promptly be wedge inwall anodontia line.Run into rainwater,, also can skid even wedge has vised guide rail.Though it is not very big to fall stroke, seismaesthesia is big after vising.

The purpose of this utility model provides a kind of improved construction hoist falling-proof dropping control device, which kind of working condition no matter, which kind of climatic conditions, it can both make cage of elevator break behind the steel rope in zero second, its safety tongs can vise guide rail, promotes cage and stops, landing stroke≤35 millimeter; Two oblique arms strut simultaneously, leave on the crane cross bar, play protective effect for the second time.Because anti-fall action is fast, and 2 actions are arranged, there is not the seismaesthesia that negative acceleration produces so promote cage, safety factor height, steel rope constantly, do not have misoperation.Satisfy the requirement of GB 10055-1996 " building hoist safety rule ".

The purpose of this utility model is achieved in that the gin wheel that promotes the cage top is connected with lifting cage entablatrance by the lineal bar of the lifting of fluting, shock mount between gin wheel and the entablatrance, gin wheel is connected by the oblique tie-rod of slotting with the supporting base at entablatrance two ends, rotating shaft is housed in the supporting base, rotating shaft two flat end Extension support seat axis holes are made no key with the oblique tie-rod elongated slot of fluting and are connected, the bar of encorbelmenting is housed in the middle of the rotating shaft, the outer downside of supporting base respectively is equipped with safety tongs, wedge top, left and right sides suspension rod is connected with the bar of encorbelmenting in the safety block, have the wedge mouth of tooth line to stretch into and surround the crane guide rail outside, the wedge rear side has the tommy of groove parallel with the inclined-plane and safety block correspondence position to move to join.The safety block outside face is equipped with protective case.The building hoist of forming a snap promotes cage falling proof device train of mechanism.

The concrete structure of utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is that the utility model is at the site plan that promotes on the cage.

Fig. 2 is structure of the present utility model and fundamental diagram.

Fig. 3 be the utility model safety tongs just, left view, promptly the A of Fig. 2 is to view.

Among Fig. 11, oblique tie-rod 4, the spring 5 of the lineal bar 2 of lifting of fluting, gin wheel 3, fluting, promote cage entablatrance 6, supporting base 7, safety tongs 8, guide rail 9, promote cage.

In Fig. 1, the lineal bar (1) of the lifting of fluting, gin wheel (2), the oblique tie-rod (3) of fluting, spring (4), supporting base (6) are installed in respectively with safety tongs (7) and promote cage entablatrance (5) top and two ends, the left and right sides, promote cage (9) and move up and down along guide rail (8).

Among Fig. 21, steel cable 2, bolt 3, the lineal bar 4 of the lifting of fluting, jack shaft 5, spring 6, pulley 7, pulley clamping plate 8, bolt 9, sheave shaft 10, hinge bolt 11, the oblique tie-rod 12 of fluting, bolt 13, supporting base 14, rotating shaft 15, the bar 16 of encorbelmenting, wedge suspension rod 17, elevator guide rails 18, safety tongs 19, bolt 20, bolt 21, promote cage entablatrance 22, the oblique tie-rod 23 of the fluting of full state, the gin wheel 24 of full state, position block 25, bolt 26, the spring fixer.

In Fig. 2, pulley (6), front and back 2 pulley clamping plate (7), bolt (8), connect to form gin wheel with jack shaft (4), 2 are clipped in the middle gin wheel before and after the lineal bar of the lifting of fluting, the oblique tie-rod (11) of fluting up and down 2 sections connect by bolt (12), its upper end is connected with the pulley clamping plate by hinge bolt (10), its underpart elongated slot is made no key with rotating shaft (14) two flat ends of Extension support seat (13) axis hole and is connected, supporting base is connected with lifting cage entablatrance (21) by bolt (20), safety tongs (18) is connected with lifting cage entablatrance two ends by bolt (19), wedge suspension rod (16) is connected with the bar of encorbelmenting (15) in the safety tongs, the bar other end of encorbelmenting is connected with the rotating shaft stage casing, and spring 5. upper end is enclosed within the jack shaft termination, the lower end is enclosed within spring fixer (26) termination, and position block (24) is contained on the pulley clamping plate, prop up the lineal bar avris of lifting of fluting, make gin wheel when work, keep normally not rocking.When steel rope (1) work done, mention the oblique tie-rod of gin wheel and fluting, back-moving spring.Steel rope is in a single day disrumpent feelings, spring work, in zero second time, quickly the leave behind oblique tie-rod upper end of gin wheel and fluting, its lower end elongated slot is the center with the supporting base rotating shaft, and makes it rotation, so just produce 2 actions continuously: 1. after the supporting base rotating shaft rotation, originally favoured the bar perk of encorbelmenting of supporting base vertical center line, and mention wedge in the safety tongs, vise crane guide rail (17), the lifting cage that order loses rope traction stops falling immediately; 2. the oblique tie-rod upper end of fluting falls back (23) with gin wheel, become square edge (22) by a hypotenuse, the part that it is longer is gone to overhanging along supporting base rotating shaft two flat ends through elongated slot, and rest on the cross bar of crane, play fall arrest effect for the second time.

Among Fig. 31, wedge suspension rod 2, inwall have wedge (being called for short wedge down) 3, safety block 4, the bar 5 of encorbelmenting, crane guide rail 6, wedge loose slot 7, bolt 8, the protective case of tooth line.

In Fig. 3, wedge (2) is contained in the interior left and right sides of safety block (3), and the bar of encorbelmenting (4) is connected with wedge suspension rod (1).When the bar of encorbelmenting was mentioned into horizontality, wedge was also and then mentioned, and rose along wedge loose slot and the inboard skew wall of safety tongs, so vise the crane guide rail (5) by its center, protective case (8) covers safety gear block and wedge, and the restriction wedge is offside.

Claims (2)

1, a kind of building hoist promotes the cage falling proof device, it is characterized in that: the gin wheel that promotes the cage top is connected with lifting cage entablatrance by the lineal bar of the lifting of fluting, shock mount between gin wheel and the entablatrance, gin wheel is connected by the oblique tie-rod of slotting with the supporting base at entablatrance two ends, rotating shaft is housed in the supporting base, rotating shaft two flat end Extension support seat axis holes are made no key with the oblique tie-rod elongated slot of fluting and are connected, the bar of encorbelmenting is housed in the middle of the rotating shaft, have the wedge of tooth line to be contained in left and right sides in the safety block, the wedge rear side has the locating dowel pin of groove parallel with the inclined-plane and safety block correspondence position to move to join.

2, anti-drop device for lifting cage of elevator according to claim 1 is characterized in that: the safety gear block external surface is equipped with protective case.