CN203728434U - Crane movable pulley device provided with broken rope protection and falling prevention mechanism - Google Patents
Crane movable pulley device provided with broken rope protection and falling prevention mechanism Download PDFInfo
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- CN203728434U CN203728434U CN201420068295.1U CN201420068295U CN203728434U CN 203728434 U CN203728434 U CN 203728434U CN 201420068295 U CN201420068295 U CN 201420068295U CN 203728434 U CN203728434 U CN 203728434U
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- pulley
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Abstract
The utility model discloses a crane movable pulley device provided with a broken rope protection and falling prevention mechanism. The crane movable pulley device comprises a pulley seat, a pulley and a broken rope protection mechanism, wherein the pulley seat comprises two parallel pulley seat clamp plates; a pulley shaft of the pulley is mounted between the two pulley seat clamp plates; the broken rope protection mechanism is mounted in the pulley seat; a slide way is formed in the middle of each pulley seat clamp plate along the longitudinal axis, and two ends of the pulley shaft are mounted in the slide ways in a longitudinal sliding manner; the broken rope protection mechanism adopts a rope clamping assembly and comprises two rope clamping mechanisms and a transmission assembly, each rope clamping mechanism corresponds to one steel wire rope inlet and outlet end of the pulley seat, and the transmission assembly is arranged in the pulley seat and connected with the pulley shaft and the two rope clamping mechanisms respectively. According to the crane movable pulley device, when a lifting steel wire rope loosens and breaks accidentally, the lifting steel wire rope can be stopped in the pulley seat on the non-breaking rope side, the probability of weight falling accidents caused by breaking of the steel wire rope is greatly reduced, and the safety protection effect can be well realized.
Description
Technical field
The utility model relates to a kind of elevator machinery movable pulley device, is specifically related to a kind of crane pulley device with breaking rope protecting anti-falling mechanism.
Background technology
The load-engaging device of elevator machinery is generally made up of pulley or assembly pulley and suspension hook, cage, magnetic chuck, vacuum cup, grab bucket Deng Qu thing mechanism, hoist rope connects the driver train that hoists of elevator machinery by pulley gear, load-engaging device is sling or transferred weight.Pulley axial line and the pulley base of tradition movable pulley are fixed, and vertical direction does not have displacement.When meeting accident, a side hoisting cable gets loose or when disconnected rope, this side steel rope can not bearing load.Therefore, weight just falls with the speed of free-falling body with movable pulley-suspension hook, thereby causes casualties, the accident such as device damage.This falling accident because of the disconnected rope initiation of hoisting cable is of common occurrence, is modal in elevator machinery accident.
Chinese patent 2012203825958 discloses the mechanical type anti-fall dropping control device in the work of a kind of steel rope movable pulley; it drives folder rope assembly by transmission component; make in the time that pine, disconnected accident occur steel rope; can be by locked steel rope in pulley; thereby prevent that the weight on suspension hook from falling, and plays the effect of safety guard-safeguard.
Utility model content
The purpose of this utility model is to provide that a kind of structure is comparatively simple, reliable, the crane pulley device with breaking rope protecting anti-falling mechanism easily resets; it gets loose or when disconnected rope when a side hoist rope meets accident; the moment that weight falls can be by steel rope together with the weight stop of falling the opposite side at crane pulley, prevent the generation of weight falling accident.
For achieving the above object, first technical scheme that the utility model adopts is as follows:
With a crane pulley device for breaking rope protecting anti-falling mechanism, comprising: pulley base, comprises the two pulley base clamping plate that relatively be arranged in parallel; One pulley, its sheave shaft is installed between two pulley base clamping plate; Breaking rope protecting mechanism, it is installed in pulley base; The middle part of each pulley base clamping plate longitudinally axis has a slideway, and the two ends of described sheave shaft are can longitudinal sliding motion mode being arranged in slideway; And described breaking rope protecting mechanism is a folder rope assembly, it comprises: two rope grip mechanisms, and a steel rope in-out end of the corresponding pulley base of each rope grip mechanism arranges; With a transmission component, be arranged in pulley base and be connected with described sheave shaft and two rope grip mechanisms respectively.
As preferably, each rope grip mechanism is mainly made up of a regular jaw and a moving jaw, and a steel rope in-out end of the corresponding pulley base of described regular jaw is fixed between two pulley base clamping plate; The corresponding described regular jaw of described moving jaw is hinged between two pulley base clamping plate; Described transmission component, is arranged in pulley base and is connected with described sheave shaft and two moving jaws respectively.
As preferably, described transmission component comprises: an adapter shaft, and its two ends are respectively through pulley base clamping plate and can slide up and down along pulley base clamping plate longitudinal axis; Two connecting rods, one end of each connecting rod and a moving jaw are hinged, and the other end and adapter shaft are hinged; With two sheave shaft adapter plates, one end of each sheave shaft adapter plate is fixedly connected on the sheave shaft in pulley base clamping plate outside, and the other end is fixedly connected with the adapter shaft through pulley base clamping plate.
Preferred as another, each rope grip mechanism mainly comprises: a voussoir seat, and a steel rope in-out end of corresponding pulley base is fixed between two pulley base clamping plate; One movable voussoir, is arranged in the slideway of described voussoir seat; With a voussoir linkage chuck plate, be arranged on the upper end of movable voussoir; Described transmission component comprises: two sheave shaft adapter plates, and each sheave shaft adapter plate is fixedly connected with the sheave shaft axle head that is positioned at pulley base clamping plate outside by sheave shaft clamp; Two push rods, the upper end of each push rod is connected with the lower end of a movable voussoir; With two connecting rods, the shank portion of each connecting rod is by a pitman shaft and wherein pulley base clamping plate are hinged, and two ends are respectively equipped with a waist shaped hole; One end of each connecting rod is connected with a sheave shaft adapter plate through pulley base clamping plate by a connecting rod pin being arranged in waist shaped hole, and the other end is connected with the bottom of a push rod by a connecting rod pin being arranged in waist shaped hole.
For achieving the above object, second technical scheme that the utility model adopts is as follows:
With a crane pulley device for breaking rope protecting anti-falling mechanism, comprising: pulley base, comprises the two pulley base clamping plate that relatively be arranged in parallel; Two pulleys, a steel rope in-out end of the corresponding pulley base of sheave shaft of each pulley is installed between two pulley base clamping plate; Breaking rope protecting mechanism, it is installed in pulley base; The corresponding sheave shaft of each pulley base clamping plate longitudinally has a slideway, and the two ends of each sheave shaft are can longitudinal sliding motion mode being arranged in slideway; And described breaking rope protecting mechanism is two groups of folder rope assemblies, every group of folder rope assembly comprises: a rope grip mechanism, and a steel rope in-out end of the corresponding pulley base of described rope grip mechanism arranges; With a transmission component, be arranged in pulley base and be connected with described sheave shaft and two rope grip mechanisms respectively.
As preferably, described rope grip mechanism is mainly by a regular jaw with form with moving jaw, and a steel rope in-out end of the corresponding pulley base of described regular jaw is fixed between two pulley base clamping plate; The corresponding described regular jaw of described moving jaw is hinged between two pulley base clamping plate; Described transmission component is arranged in pulley base and is connected with described sheave shaft and described moving jaw respectively.
As preferably, described transmission component comprises: adapter shaft, and hinged with described moving jaw, and two sheave shaft adapter plates, one end of each sheave shaft adapter plate is fixedly connected on the sheave shaft in pulley base clamping plate outside, and the other end is fixedly connected with the adapter shaft through pulley base clamping plate.
Preferred as another kind, described rope grip mechanism mainly comprises: a voussoir seat, and a steel rope in-out end of corresponding pulley base is fixed between two pulley base clamping plate; One movable voussoir, is arranged in the slideway of described voussoir seat; With a voussoir linkage chuck plate, be arranged on the upper end of movable voussoir; Described transmission component comprises: two sheave shaft adapter plates, and each sheave shaft adapter plate is fixedly connected with the sheave shaft axle head that is positioned at pulley base clamping plate outside by sheave shaft clamp; One push rod, the upper end of described push rod is connected with the lower end of a movable voussoir; With a connecting rod, the shank portion of described connecting rod is by a pitman shaft and wherein pulley base clamping plate are hinged, and two ends are respectively equipped with a waist shaped hole; One end of described connecting rod is connected by the waist shaped hole on it and sheave shaft, and the other end is connected with the bottom of described push rod by the connecting rod pin in a waist shaped hole disposed thereon.
For achieving the above object, the 3rd technical scheme of the present utility model is as follows:
With a crane pulley device for breaking rope protecting anti-falling mechanism, comprising: pulley base, comprises the two pulley base clamping plate that relatively be arranged in parallel; One sheave shaft, its two ends are installed between two pulley base clamping plate; Two pulleys, each pulley is located on described sheave shaft and a corresponding steel rope in-out end is installed between two pulley base clamping plate; Breaking rope protecting mechanism, it is installed in pulley base; The corresponding described sheave shaft of each pulley base clamping plate longitudinally has a slideway, and the two ends of described sheave shaft are can longitudinal sliding motion mode being arranged in slideway; And described breaking rope protecting mechanism is a folder rope assembly, it comprises: two rope grip mechanisms, and a steel rope in-out end of the corresponding pulley base of each rope grip mechanism arranges; With a transmission component, be arranged in pulley base and be connected with described sheave shaft and two rope grip mechanisms respectively.
As preferably, each rope grip mechanism is mainly made up of a regular jaw and a moving jaw, and a steel rope in-out end of the corresponding pulley base of described regular jaw is fixed between two pulley base clamping plate; The corresponding described regular jaw of described moving jaw is hinged between two pulley base clamping plate; Described transmission component, is arranged in pulley base and is connected with described sheave shaft and two moving jaws respectively.
As preferably, described transmission component comprises: an adapter shaft, and its two ends are respectively through pulley base clamping plate and can slide up and down along pulley base clamping plate longitudinal axis; Two connecting rods, one end of each connecting rod and a moving jaw are hinged, and the other end and adapter shaft are hinged; With two sheave shaft adapter plates, one end of each sheave shaft adapter plate is fixedly connected on the sheave shaft in pulley base clamping plate outside, and the other end is fixedly connected with the adapter shaft through pulley base clamping plate.
Preferred as another kind, each rope grip mechanism mainly comprises: a voussoir seat, and a steel rope in-out end of corresponding pulley base is fixed between two pulley base clamping plate; One movable voussoir, is arranged in the slideway of described voussoir seat; With a voussoir linkage chuck plate, be arranged on the upper end of movable voussoir; Described transmission component comprises: two sheave shaft adapter plates, and each sheave shaft adapter plate is fixedly connected with the sheave shaft axle head that is positioned at pulley base clamping plate outside by sheave shaft clamp; Two push rods, the upper end of each push rod is connected with the lower end of a movable voussoir; With two connecting rods, the shank portion of each connecting rod is by a pitman shaft and wherein pulley base clamping plate are hinged, and two ends are respectively equipped with a waist shaped hole; One end of each connecting rod is connected with a sheave shaft adapter plate through pulley base clamping plate by a connecting rod pin being arranged in waist shaped hole, and the other end is connected with the bottom of a push rod by a connecting rod pin being arranged in waist shaped hole.
As preferably, in above-mentioned three technical schemes, also comprise an extension spring, one end of described extension spring is connected with pulley base clamping plate, and the other end is connected with described transmission component.
As preferably, the moving jaw in above-mentioned three technical schemes is fan-shaped, and Eccentric-hinge is connected between two pulley base clamping plate.
As preferably, the brake surface of the moving jaw in above-mentioned three technical schemes is provided with tooth engaged or wedge surface.
Further, the bottom of the pulley base in above-mentioned three technical schemes is connected with a Qu Wu mechanism, and described Qu Wu mechanism comprises the Qu Wu mechanism that suspension hook, cage, magnetic chuck, vacuum cup and grab bucket etc. are conventional.
The utility model, in the time that pine, disconnected accident occur hoisting cable, can, by hoisting cable stop in the pulley base of non-disconnected rope side, greatly reduce the probability of the weight falling accident causing because of wire rope breaking, has played good safety guard-safeguard effect.
Brief description of the drawings
Fig. 1 is the structural representation that movable pulley device and blackwall hitch are combined into load-engaging device described in the utility model embodiment 1.
Fig. 2 is the side-looking structural representation of Fig. 1.
Fig. 3 is the structural representation that tower crane movable pulley device and blackwall hitch are combined into load-engaging device described in the utility model embodiment 2.
Fig. 4 is the structural representation that movable pulley device and blackwall hitch are combined into load-engaging device described in the utility model embodiment 3.
Fig. 5 is the structural representation of pulley base clamping plate described in the utility model embodiment 3.
Fig. 6 is the structural representation that tower crane movable pulley device and blackwall hitch are combined into load-engaging device described in the utility model embodiment 4.
In figure:
1-pulley base; 11-pulley base clamping plate; 111-kidney-shaped slideway; 112-perforation; 2-pulley; 21-sheave shaft; 22-sheave shaft clamp; 3-suspension hook; 41-regular jaw; 42-moving jaw; 421-tooth engaged; 422-turning cylinder; 43-adapter shaft; 44-connecting rod; 441-pitman pin; 442-waist shaped hole; 443-connecting rod pin; 444-pitman shaft; 45-sheave shaft adapter plate; 46-extension spring; 471-voussoir seat; 4711-slideway; 472-movable voussoir; 473-voussoir linkage chuck plate; 474-push rod; 5-steel rope.
Now in conjunction with the accompanying drawings and embodiments the utility model is described in further detail.
Detailed description of the invention
Embodiment 1
As depicted in figs. 1 and 2, crane pulley device and blackwall hitch described in the present embodiment are combined into load-engaging device, and mainly by pulley base 1, pulley 2, suspension hook 3, folder rope assembly and extension spring 46 form.
Described pulley base 1 comprises two opposing parallel settings and by the fixing pulley base clamping plate 11 of tie bolt.The middle part of every pulley base clamping plate 11 longitudinally axis has a kidney-shaped slideway 111.
Described pulley 2 is installed between two pulley base clamping plate 11, and the two ends of its sheave shaft 21 are respectively can longitudinal sliding motion mode being arranged in a kidney-shaped slideway 111.
Described suspension hook 3 is arranged between two pulley base clamping plate 11 of pulley base 1 bottom by a rotating shaft.
Described folder rope assembly is mainly made up of two regular jaws 41, two moving jaws 42 and a transmission component.Steel rope 5 in-out ends of the corresponding pulley base 1 of each regular jaw 41 are fixed between two pulley base clamping plate 11 by tie bolt.Each moving jaw 42 is fan-shaped, relative with a regular jaw 41, and is connected between two pulley base clamping plate 11 by turning cylinder 422 Eccentric-hinges, and in addition, it can be also wedge surface that the brake surface of each moving jaw 42 is provided with tooth engaged 421().Transmission component is mainly made up of an adapter shaft 43, two connecting rods 44, two sheave shaft adapter plates 45.The two ends of adapter shaft 43 are respectively sliding up and down mode the is greater than adapter shaft diameter of axle through an aperture that is arranged on this mounting hole of perforation 112(of pulley base clamping plate along pulley base clamping plate longitudinal axis).One end of each connecting rod 44 is hinged by pitman pin 441 and a moving jaw 42, and its other end is hinged with adapter shaft 43.One end of each sheave shaft adapter plate 45 is fixedly connected with sheave shaft 21 axle heads that are positioned at pulley base clamping plate 11 outsides by sheave shaft clamp 22, and the other end is fixedly connected with adapter shaft 43 axle heads of homonymy.
One end of extension spring 46 is connected with pulley base clamping plate 11, and the other end is connected with adapter shaft 43.
Described in the present embodiment, the working process of load-engaging device is as follows:
In the time of a side accidental release of hoisting cable 5 or disconnected rope, load-engaging device lose upwards pulling force, load-engaging device and the weight on it will fall as free-falling body under Action of Gravity Field.In this process, extension spring 46 makes sheave shaft adapter plate move downward in the slideway of two pulley base clamping plate in company with pulley and sheave shaft, between the axial line of pulley and pulley base, has produced relative displacement.And the pitman shaft being fixed on sheave shaft adapter plate also produces displacement downwards with sheave shaft adapter plate, because the two ends of connecting rod are hinged on respectively on pitman shaft and moving jaw, so connecting rod will drive moving jaw upward movement around the shaft, gap between brake surface and the regular jaw of moving jaw is reduced, in non-disconnected rope one side, the steel rope of motion is clamped between regular jaw and moving jaw contact surface, under Action of Gravity Field, non-disconnected rope one side is pressed from both sides tighter and tighter, steel rope is remained and being connected of pulley base, thereby avoid the generation of load-engaging device and the weight falling accident on it.Owing between pitman shaft and pulley base clamping plate, extension spring being housed, this extension spring remains certain pulling force, ensure that sheave shaft adapter plate, together with pulley and sheave shaft when the pulling force losing upwards (when slack rope), can do the motion of relative displacement in the slideway of pulley base clamping plate.Due to the restriction of folder rope unit construction, even generation misoperation, under the state of two steel rope stress balances, movable pulley device relies on self gravitation to overcome the pulling force of spring together with other assembly, make sheave shaft adapter plate be returned to the highest point of slideway together with pulley and sheave shaft, the promotion of pitman shaft moves downward moving jaw, and the steel rope of clamping during by misoperation discharges, and moving jaw returns to normal virgin state.
In addition, on the basis of the present embodiment, the assembly pulley being made up of two pulleys at least also can be installed on described sheave shaft, and having two pulleys is that a corresponding steel rope in-out end is installed between two pulley base clamping plate respectively, and described folder rope assembly does suitable position adjustment according to the layout of those pulleys, its implementation result is that essence is identical with embodiment 1.
Embodiment 2
As shown in Figure 3, the tower crane described in the present embodiment is combined into load-engaging device with movable pulley device and blackwall hitch, mainly comprises that 1, two pulley 2 of pulley base, suspension hook 3, two groups of folder rope assemblies and extension spring 46 form.
Described pulley base 1 comprises two opposing parallel settings and by the fixing pulley base clamping plate 11 of tie bolt.The installation site of every pulley base clamping plate 11 corresponding each pulleys longitudinally axis has a kidney-shaped slideway 111.
Two steel rope 5 in-out ends of described two pulley 2 corresponding pulley bases are arranged between two pulley base clamping plate 11, and the two ends of the sheave shaft of each pulley are slidably arranged in a slideway 111.
Described suspension hook 3 is arranged between two pulley base clamping plate 11 of pulley base 1 bottom by a rotating shaft.
Every group of folder rope assembly is mainly made up of a regular jaw 41, a moving jaw 42 and a transmission component.Steel rope 5 in-out ends of the corresponding pulley base 1 of regular jaw 41 are fixed between two pulley base clamping plate 11 by tie bolt.Moving jaw 42 is fan-shaped, relative with regular jaw 41, and is connected between two pulley base clamping plate 11 by turning cylinder 422 Eccentric-hinges, and in addition, it can be also wedge surface that the brake surface of each moving jaw 42 is provided with tooth engaged 421().Transmission component is mainly made up of an adapter shaft 43, two sheave shaft adapter plates 45.Adapter shaft 43 is hinged with moving jaw 42.One end of each sheave shaft adapter plate 45 is fixedly connected with sheave shaft 21 axle heads that are positioned at pulley base clamping plate 11 outsides by sheave shaft clamp, and the other end is fixedly connected with adapter shaft 43 axle heads of homonymy.
One end of extension spring 46 is connected with pulley base clamping plate 11, and the other end is connected with adapter shaft 43.
Described in the present embodiment, the working process of load-engaging device is as follows:
Get loose or when disconnected rope when hoisting cable meets accident, load-engaging device lose upwards pulling force, load-engaging device and the weight on it fall as free-falling body under Action of Gravity Field.In this process, extension spring 46 makes sheave shaft adapter plate move downward in the slideway of two pulley base clamping plate in company with pulley and sheave shaft, between pulley axial line and pulley base, has produced displacement.And the pitman shaft being fixed on sheave shaft adapter plate also produces displacement downwards with sheave shaft adapter plate, pull with eccentric moving jaw brake surface by moving jaw rotating shaft upward movement, reduce the gap between moving jaw and regular jaw, under Action of Gravity Field, non-disconnected rope one side is pressed from both sides tighter and tighter, steel rope is remained and being connected of pulley suspension hook, thereby avoided the generation of load-engaging device and the weight falling accident on it.Owing between pitman shaft and pulley base clamping plate, extension spring being housed, remain certain pulling force, ensure that sheave shaft adapter plate, together with pulley and sheave shaft when the pulling force losing upwards (when slack rope), can do the motion of relative displacement in the slideway of pulley base clamping plate.Due to the restriction of folder rope unit construction, even generation misoperation, under the state of two steel rope stress balances, tower crane movable pulley device relies on self gravitation to overcome the pulling force of spring together with other assembly, make sheave shaft adapter plate be returned to the highest point of slideway together with pulley and sheave shaft, the promotion of pitman shaft moves downward moving jaw, and the steel rope of clamping during by misoperation discharges, and moving jaw returns to normal virgin state.
Embodiment 3
As shown in Figure 4 and Figure 5, crane pulley device and blackwall hitch described in the present embodiment are combined into load-engaging device, and mainly by pulley base 1, pulley 2, suspension hook 3, folder rope assembly and extension spring 46 form.
Described pulley base 1 comprises two opposing parallel settings and by the fixing pulley base clamping plate 11 of tie bolt.The middle part of every pulley base clamping plate 11 longitudinally axis has a kidney-shaped slideway 111.
Described pulley 2 is installed between two pulley base clamping plate 11, and the two ends of its sheave shaft 21 are respectively can longitudinal sliding motion mode being arranged in a kidney-shaped slideway 111.
Described suspension hook 3 is arranged between two pulley base clamping plate 11 of pulley base 1 bottom by a rotating shaft.
Described folder rope assembly is mainly made up of two rope grip mechanisms and a transmission component.Each rope grip mechanism is mainly made up of a voussoir seat 471, a movable voussoir 472 and a voussoir linkage chuck plate 473.Steel rope 5 in-out ends of the corresponding pulley base 1 of voussoir seat 471 are fixed between two pulley base clamping plate 11.Movable voussoir 472 is arranged on by the voussoir linkage chuck plate 473 of end disposed thereon in the slideway 4711 of voussoir seat, and this voussoir linkage chuck plate 473 is positioned at slideway all the time for restraint voussoir.Described transmission component is mainly made up of two sheave shaft adapter plates 45, two push rods 474 and two connecting rods 44.Each sheave shaft adapter plate is fixedly connected with the sheave shaft axle head that is positioned at pulley base clamping plate outside by sheave shaft clamp 22.The upper end of every push rod is connected with the lower end of a movable voussoir 472.The shank portion of every connecting rod 44 is hinged by a pitman shaft 444 and one of them pulley base clamping plate 11; Every connecting rod 44 two ends are respectively equipped with a waist shaped hole 442: one end of connecting rod is waist shaped hole by a connecting rod pin 443 being arranged in waist shaped hole through this perforation of perforation 112(arranging on pulley base clamping plate) and be connected with a sheave shaft adapter plate, the other end is connected with the bottom of a push rod 474 by a connecting rod pin 443 being arranged in waist shaped hole equally.
One end of extension spring 46 is connected with pulley base clamping plate 11, and the other end is connected with a sheave shaft adapter plate.
Described in the present embodiment, the working process of load-engaging device is as follows:
In the time of a side accidental release of hoisting cable 5 or disconnected rope, load-engaging device lose upwards pulling force, load-engaging device and the weight on it will fall as free-falling body under Action of Gravity Field.In this process, extension spring 46 makes sheave shaft adapter plate move downward in the slideway of two pulley base clamping plate in company with pulley and sheave shaft, between the axial line of pulley and pulley base, has produced relative displacement.The drivening rod that moves downward of sheave shaft adapter plate rotates and promotes push rod upward movement by lever principle around pitman shaft; The upward movement of push rod make movable voussoir by voussoir linkage chuck plate at slideway (slideway has certain angle) inter-sync upward movement, touch the steel rope of non-disconnected rope side and produce after certain friction force at movable voussoir, steel rope drive activity voussoir upward movement under Action of Gravity Field, steel rope is pressed from both sides tighter and tighter under the effect of movable voussoir, steel rope is remained and being connected of pulley base, thereby avoided the generation of load-engaging device and the weight falling accident on it.Owing between sheave shaft adapter plate and pulley base clamping plate, extension spring being housed, this extension spring remains certain pulling force, ensure that sheave shaft adapter plate, together with pulley and sheave shaft when the pulling force losing upwards (when slack rope), can do the motion of relative displacement in the slideway of pulley base clamping plate.Due to the restriction of folder rope unit construction, even generation misoperation, under the state of two steel rope stress balances, movable pulley device relies on self gravitation to overcome the pulling force of spring together with other assembly, make sheave shaft adapter plate be returned to the highest point of slideway together with pulley and sheave shaft, the promotion of pitman shaft makes push rod move downward together with movable voussoir, and the steel rope of clamping during by misoperation discharges, and movable voussoir returns to normal virgin state.
In addition, on the basis of the present embodiment, the assembly pulley being made up of two pulleys at least also can be installed on described sheave shaft, and having two pulleys is that a corresponding steel rope in-out end is installed between two pulley base clamping plate respectively, and described folder rope assembly does suitable position adjustment according to the layout of those pulleys, its implementation result is that essence is identical with embodiment 3.
Embodiment 4
As shown in Figure 6, the tower crane described in the present embodiment is combined into load-engaging device with movable pulley device and blackwall hitch, mainly comprises that 1, two pulley 2 of pulley base, suspension hook 3, two groups of folder rope assemblies and extension spring 46 form.
Described pulley base 1 comprises two opposing parallel settings and by the fixing pulley base clamping plate 11 of tie bolt.The installation site of every pulley base clamping plate 11 corresponding each pulleys longitudinally axis has a kidney-shaped slideway 111.
Two steel rope 5 in-out ends of described two pulley 2 corresponding pulley bases are arranged between two pulley base clamping plate 11, and the two ends of the sheave shaft of each pulley are slidably arranged in a slideway 111.
Described suspension hook 3 is arranged between two pulley base clamping plate 11 of pulley base 1 bottom by a rotating shaft.
Every group of folder rope assembly is mainly made up of a rope grip mechanism and a transmission component.Rope grip mechanism is mainly made up of a voussoir seat 471, a movable voussoir 472 and a voussoir linkage chuck plate 473.Steel rope 5 in-out ends of the corresponding pulley base 1 of voussoir seat 471 are fixed between two pulley base clamping plate 11.Movable voussoir 472 is arranged on by the voussoir linkage chuck plate 473 of end disposed thereon in the slideway 4711 of voussoir seat, and this voussoir linkage chuck plate 473 is positioned at slideway all the time for restraint voussoir.Described transmission component is mainly made up of two sheave shaft adapter plates 45, a push rod 474 and a connecting rod 44.Every sheave shaft adapter plate is fixedly connected with the sheave shaft axle head that is positioned at pulley base clamping plate outside by sheave shaft clamp 22.The upper end of push rod is connected with the lower end of a movable voussoir 472.The shank portion of every connecting rod 44 is hinged by a pitman shaft 444 and one of them pulley base clamping plate 11; Every connecting rod 44 two ends are respectively equipped with a waist shaped hole 442: link on sheave shaft and with it by a waist shaped hole (one end of this waist shaped hole is bayonet socket) holding in one end of connecting rod, the other end is connected with the bottom of a push rod 474 by a connecting rod pin 443 being arranged in waist shaped hole.
One end of extension spring 46 is connected with pulley base clamping plate 11, and the other end is connected with connecting rod (can be also sheave shaft adapter plate).
Described in the present embodiment, the working process of load-engaging device is as follows:
In the time of a side accidental release of hoisting cable 5 or disconnected rope, load-engaging device lose upwards pulling force, load-engaging device and the weight on it will fall as free-falling body under Action of Gravity Field.In this process, extension spring 46 makes sheave shaft adapter plate move downward in the slideway of two pulley base clamping plate in company with pulley and sheave shaft, between the axial line of pulley and pulley base, has produced relative displacement.The drivening rod that moves downward of sheave shaft rotates and promotes push rod upward movement by lever principle around pitman shaft; The upward movement of push rod make movable voussoir by voussoir linkage chuck plate at slideway (slideway has certain angle) inter-sync upward movement, touch the steel rope of non-disconnected rope side and produce after certain friction force at movable voussoir, steel rope drive activity voussoir upward movement under Action of Gravity Field, steel rope is pressed from both sides tighter and tighter under the effect of movable voussoir, steel rope is remained and being connected of pulley base, thereby make the load-engaging device that fallen and the weight stop on it aloft.Owing between connecting rod (can be also sheave shaft adapter plate) and pulley base clamping plate, extension spring being housed, this extension spring remains certain pulling force, ensure that sheave shaft adapter plate, together with pulley and sheave shaft when the pulling force losing upwards (when slack rope), can do the motion of relative displacement in the slideway of pulley base clamping plate.Due to the restriction of folder rope unit construction, even generation misoperation, under the state of two steel rope stress balances, movable pulley device relies on self gravitation to overcome the pulling force of spring together with other assembly, make sheave shaft adapter plate be returned to the highest point of slideway together with pulley and sheave shaft, the promotion of pitman shaft makes push rod move downward together with movable voussoir, and the steel rope of clamping during by misoperation discharges, and movable voussoir returns to normal virgin state.
It should be noted that, in embodiment 3, the connection mode of connecting rod and sheave shaft adapter plate can adopt the connection mode of the connecting rod that adopts as embodiment 4 and sheave shaft interlock to replace.Same, in embodiment 4, the connection mode of connecting rod and sheave shaft also can adopt the connection mode of passing through connecting rod pin adopting as embodiment 3 to replace.
Crane pulley device described in the utility model, except being combined into load-engaging device with blackwall hitch, Qu Wu mechanism that can also be conventional with existing cage, magnetic chuck, vacuum cup, grab bucket etc. is combined and forms load-engaging device, can obtain above-mentioned implementation result equally.
Claims (16)
1. the crane pulley device with breaking rope protecting anti-falling mechanism, comprising:
Pulley base, comprises the two pulley base clamping plate that relatively be arranged in parallel;
One pulley, its sheave shaft is installed between two pulley base clamping plate;
Breaking rope protecting mechanism, it is installed in pulley base; It is characterized in that,
The middle part of each pulley base clamping plate longitudinally axis has a slideway, and the two ends of described sheave shaft are can longitudinal sliding motion mode being arranged in slideway; And described breaking rope protecting mechanism is a folder rope assembly, it comprises:
Two rope grip mechanisms, a steel rope in-out end of the corresponding pulley base of each rope grip mechanism arranges; With
One transmission component, is arranged in pulley base and is connected with described sheave shaft and two rope grip mechanisms respectively.
2. a kind of crane pulley device with breaking rope protecting anti-falling mechanism according to claim 1, it is characterized in that, each rope grip mechanism is mainly made up of a regular jaw and a moving jaw, and a steel rope in-out end of the corresponding pulley base of described regular jaw is fixed between two pulley base clamping plate; The corresponding described regular jaw of described moving jaw is hinged between two pulley base clamping plate;
Described transmission component, is arranged in pulley base and is connected with described sheave shaft and two moving jaws respectively.
3. a kind of crane pulley device with breaking rope protecting anti-falling mechanism according to claim 2, is characterized in that, described transmission component comprises:
One adapter shaft, its two ends also can slide up and down along pulley base clamping plate longitudinal axis through pulley base clamping plate respectively;
Two connecting rods, one end of each connecting rod and a moving jaw are hinged, and the other end and adapter shaft are hinged; With
Two sheave shaft adapter plates, one end of each sheave shaft adapter plate is fixedly connected on the sheave shaft in pulley base clamping plate outside, and the other end is fixedly connected with the adapter shaft through pulley base clamping plate.
4. a kind of crane pulley device with breaking rope protecting anti-falling mechanism according to claim 1, is characterized in that, each rope grip mechanism mainly comprises:
One voussoir seat, a steel rope in-out end of corresponding pulley base is fixed between two pulley base clamping plate;
One movable voussoir, is arranged in the slideway of described voussoir seat; With
One voussoir linkage chuck plate, is arranged on the upper end of movable voussoir;
Described transmission component comprises:
Two sheave shaft adapter plates, each sheave shaft adapter plate is fixedly connected with the sheave shaft axle head that is positioned at pulley base clamping plate outside by sheave shaft clamp;
Two push rods, the upper end of each push rod is connected with the lower end of a movable voussoir; With
Two connecting rods, the shank portion of each connecting rod is by a pitman shaft and wherein pulley base clamping plate are hinged, and two ends are respectively equipped with a waist shaped hole; One end of each connecting rod is connected with a sheave shaft adapter plate through pulley base clamping plate by a connecting rod pin being arranged in waist shaped hole, and the other end is connected with the bottom of a push rod by a connecting rod pin being arranged in waist shaped hole.
5. the crane pulley device with breaking rope protecting anti-falling mechanism, comprising:
Pulley base, comprises the two pulley base clamping plate that relatively be arranged in parallel;
Two pulleys, a steel rope in-out end of the corresponding pulley base of sheave shaft of each pulley is installed between two pulley base clamping plate;
Breaking rope protecting mechanism, it is installed in pulley base; It is characterized in that,
The corresponding sheave shaft of each pulley base clamping plate longitudinally has a slideway, and the two ends of each sheave shaft are can longitudinal sliding motion mode being arranged in slideway; And described breaking rope protecting mechanism is two groups of folder rope assemblies, every group of folder rope assembly comprises:
One rope grip mechanism, a steel rope in-out end of the corresponding pulley base of described rope grip mechanism arranges; With
One transmission component, is arranged in pulley base and is connected with described sheave shaft and two rope grip mechanisms respectively.
6. a kind of crane pulley device with breaking rope protecting anti-falling mechanism according to claim 5, it is characterized in that, described rope grip mechanism is mainly made up of a regular jaw and a moving jaw, and a steel rope in-out end of the corresponding pulley base of described regular jaw is fixed between two pulley base clamping plate; The corresponding described regular jaw of described moving jaw is hinged between two pulley base clamping plate;
Described transmission component is arranged in pulley base and is connected with described sheave shaft and described moving jaw respectively.
7. a kind of crane pulley device with breaking rope protecting anti-falling mechanism according to claim 6, is characterized in that, described transmission component comprises:
Adapter shaft, hinged with described moving jaw, and
Two sheave shaft adapter plates, one end of each sheave shaft adapter plate is fixedly connected on the sheave shaft in pulley base clamping plate outside, and the other end is fixedly connected with the adapter shaft through pulley base clamping plate.
8. a kind of crane pulley device with breaking rope protecting anti-falling mechanism according to claim 5, is characterized in that, described rope grip mechanism mainly comprises:
One voussoir seat, a steel rope in-out end of corresponding pulley base is fixed between two pulley base clamping plate;
One movable voussoir, is arranged in the slideway of described voussoir seat; With
One voussoir linkage chuck plate, is arranged on the upper end of movable voussoir;
Described transmission component comprises:
Two sheave shaft adapter plates, each sheave shaft adapter plate is fixedly connected with the sheave shaft axle head that is positioned at pulley base clamping plate outside by sheave shaft clamp;
One push rod, the upper end of described push rod is connected with the lower end of a movable voussoir; With
One connecting rod, the shank portion of described connecting rod is by a pitman shaft and wherein pulley base clamping plate are hinged, and two ends are respectively equipped with a waist shaped hole; One end of described connecting rod is connected by the waist shaped hole on it and sheave shaft, and the other end is connected with the bottom of described push rod by the connecting rod pin in a waist shaped hole disposed thereon.
9. the crane pulley device with breaking rope protecting anti-falling mechanism, comprising:
Pulley base, comprises the two pulley base clamping plate that relatively be arranged in parallel;
One sheave shaft, its two ends are installed between two pulley base clamping plate;
Two pulleys, each pulley is located on described sheave shaft and a corresponding steel rope in-out end is installed between two pulley base clamping plate;
Breaking rope protecting mechanism, it is installed in pulley base; It is characterized in that,
The corresponding described sheave shaft of each pulley base clamping plate longitudinally has a slideway, and the two ends of described sheave shaft are can longitudinal sliding motion mode being arranged in slideway; And described breaking rope protecting mechanism is a folder rope assembly, it comprises:
Two rope grip mechanisms, a steel rope in-out end of the corresponding pulley base of each rope grip mechanism arranges; With
One transmission component, is arranged in pulley base and is connected with described sheave shaft and two rope grip mechanisms respectively.
10. a kind of crane pulley device with breaking rope protecting anti-falling mechanism according to claim 9, it is characterized in that, each rope grip mechanism is mainly made up of a regular jaw and a moving jaw, and a steel rope in-out end of the corresponding pulley base of described regular jaw is fixed between two pulley base clamping plate; The corresponding described regular jaw of described moving jaw is hinged between two pulley base clamping plate;
Described transmission component, is arranged in pulley base and is connected with described sheave shaft and two moving jaws respectively.
11. a kind of crane pulley devices with breaking rope protecting anti-falling mechanism according to claim 10, is characterized in that, described transmission component comprises:
One adapter shaft, its two ends also can slide up and down along pulley base clamping plate longitudinal axis through pulley base clamping plate respectively;
Two connecting rods, one end of each connecting rod and a moving jaw are hinged, and the other end and adapter shaft are hinged; With
Two sheave shaft adapter plates, one end of each sheave shaft adapter plate is fixedly connected on the sheave shaft in pulley base clamping plate outside, and the other end is fixedly connected with the adapter shaft through pulley base clamping plate.
12. a kind of crane pulley devices with breaking rope protecting anti-falling mechanism according to claim 9, is characterized in that, each rope grip mechanism mainly comprises:
One voussoir seat, a steel rope in-out end of corresponding pulley base is fixed between two pulley base clamping plate;
One movable voussoir, is arranged in the slideway of described voussoir seat; With
One voussoir linkage chuck plate, is arranged on the upper end of movable voussoir;
Described transmission component comprises:
Two sheave shaft adapter plates, each sheave shaft adapter plate is fixedly connected with the sheave shaft axle head that is positioned at pulley base clamping plate outside by sheave shaft clamp;
Two push rods, the upper end of each push rod is connected with the lower end of a movable voussoir; With
Two connecting rods, the shank portion of each connecting rod is by a pitman shaft and wherein pulley base clamping plate are hinged, and two ends are respectively equipped with a waist shaped hole; One end of each connecting rod is connected with a sheave shaft adapter plate through pulley base clamping plate by a connecting rod pin being arranged in waist shaped hole, and the other end is connected with the bottom of a push rod by a connecting rod pin being arranged in waist shaped hole.
13. according to a kind of crane pulley device with breaking rope protecting anti-falling mechanism described in claim 1 or 5 or 9, it is characterized in that, also comprise an extension spring, one end of described extension spring is connected with pulley base clamping plate, and the other end is connected with described transmission component.
14. according to a kind of crane pulley device with breaking rope protecting anti-falling mechanism described in claim 2 or 6 or 10, it is characterized in that, described moving jaw is fan-shaped, and Eccentric-hinge is connected between two pulley base clamping plate.
15. according to a kind of crane pulley device with breaking rope protecting anti-falling mechanism described in claim 2 or 6 or 10, it is characterized in that, the brake surface of described moving jaw is provided with tooth engaged or wedge surface.
16. according to a kind of crane pulley device with breaking rope protecting anti-falling mechanism described in claim 1 or 5 or 9; it is characterized in that; the bottom of described pulley base is connected with a Qu Wu mechanism, and described Qu Wu mechanism comprises suspension hook, cage, magnetic chuck, vacuum cup and grab bucket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068295.1U CN203728434U (en) | 2014-02-17 | 2014-02-17 | Crane movable pulley device provided with broken rope protection and falling prevention mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068295.1U CN203728434U (en) | 2014-02-17 | 2014-02-17 | Crane movable pulley device provided with broken rope protection and falling prevention mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203728434U true CN203728434U (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420068295.1U Withdrawn - After Issue CN203728434U (en) | 2014-02-17 | 2014-02-17 | Crane movable pulley device provided with broken rope protection and falling prevention mechanism |
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| Country | Link |
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| CN (1) | CN203728434U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104843587A (en) * | 2014-02-17 | 2015-08-19 | 刘德民 | Crane movable pulley apparatus with rope breaking protection and anti-falling mechanism |
| CN107986156A (en) * | 2017-10-20 | 2018-05-04 | 德马科起重机械有限公司 | A kind of crane hook wire rope breaking anti-falling mechanism |
-
2014
- 2014-02-17 CN CN201420068295.1U patent/CN203728434U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104843587A (en) * | 2014-02-17 | 2015-08-19 | 刘德民 | Crane movable pulley apparatus with rope breaking protection and anti-falling mechanism |
| CN107986156A (en) * | 2017-10-20 | 2018-05-04 | 德马科起重机械有限公司 | A kind of crane hook wire rope breaking anti-falling mechanism |
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