CN201343362Y

CN201343362Y - Electric translational slab tongs with sliding compensation mechanism

Info

Publication number: CN201343362Y
Application number: CNU2008202317406U
Authority: CN
Inventors: 李维越; 张仁; 孙丹
Original assignee: Dalian Huarui Co Ltd
Current assignee: Dalian Huarui Heavy Industry Group Co Ltd
Priority date: 2008-12-15
Filing date: 2008-12-15
Publication date: 2009-11-11
Anticipated expiration: 2018-12-15

Abstract

The utility model discloses an electric translational slab tongs with a sliding compensation mechanism. The sliding compensation mechanism comprises a hydraulic cylinder, and return springs which are integrated in the hydraulic cylinder, and thereby, the sliding compensation mechanism not only reserves the original return function but also has the function of actively pushing a guide sliding block to slide in place. The difficult problem that the prior electric translational slab tongs are affected by temperature, lubrication and the like, the guide sliding block in an inclined slide way can not slide in place, so that the prior electric translational slab tongs can not achieve sufficient clamping force, thus causing that the tong teeth slip relatively to a slab or even that the slab is dropped is solved.

Description

The electric translational type slab clamp of band slide compensation mechanism

Technical field

The utility model relates to crane hanger, relates in particular to electric translational type slab clamp.

Background technology

Present electric translational type slab clamp comprises switching mechanism, tong arm assembling, entablatrance, cross sill, drop in beam frame.Connect by the drop in beam frame between the upper and lower crossbeam, be and be arranged vertically; Switching mechanism places cross sill top and inside; The gliding movement targeting structure of tong arm assembling places cross sill inside.The working process of clamp comprises four-stage: 1, the jaws close stage: switching mechanism drives inwardly operation in opposite directions of tong arm assembling, up to clamping tooth pressure tight slab two sides and producing certain initial gripping power, this initial gripping power has produced initial frictional, the conducting oneself with dignity less than slab with joint efforts of the friction force that bear slab two sides; 2, guide runner glides the stage relatively: crane rope drives clamp and rises, under the initial frictional effect, guide runner overcomes inclined ramp the friction drag of its generation is glided relatively along the tong arm frame in the tong arm, the pincers tooth is increased gradually to the gripping power of slab, stop relative downslide up to it; 3, clamp and slab hoist and the handling stage synchronously: the making a concerted effort of the friction force that this moment, gripping power produced equal the slab deadweight, clamp and slab hoist synchronously, and the handling slab is to the destination; 4, unload base and guide runner reseting stage: switching mechanism is opened the tong arm assembling, unloads slab, and retracing spring retracts initial position with guide runner in the tong arm, prepares to enter next working cycle.

The operation practice of clamp shows, in the use of clamp, because of temperature, labile factor influence such as lubricated, cause the interior guide runner downslide of inclined ramp situation not in place to happen occasionally, and slide compensation mechanism is not set in the present clamp, can not produce enough big Clamping force, and cause clamping the accident that the relative slab of tooth skids even base occurs falling.

The utility model content

The purpose of this utility model is, by being installed in the slide compensation mechanism in the tong arm assembling, initiatively promote guide runner when needed and glide and to put in place, solve in the inclined ramp guide runner glide not in place and produce Clamping force not enough, cause clamping the difficult problem that the relative slab of tooth skids even base occurs falling.

Technical solution of the present utility model is achieved in that

A kind of electric translational type slab clamp with slide compensation mechanism, comprise entablatrance, drop in beam frame, switching mechanism, cross sill, tong arm assembling and tong holder, connect by the drop in beam frame between the wherein said upper and lower crossbeam, upper and lower crossbeam is and is arranged vertically, and drop in beam frame and entablatrance are hinged, allow the rotation among a small circle of cross sill do; Switching mechanism places the top and the inside of cross sill, drive the drive screw of cross sill by three-in-one reducing motor, and move horizontally by its nut that drives in tong arm assembling, it is characterized in that: also comprise the slide compensation mechanism that places in the tong holder, this slide mechanism and guide runner are hinged by hitch; Described slide compensation mechanism is made up of the integrated retracing spring especially hydraulic ram of dish spring, can apply Active Compensation power to the guide runner in the inclined ramp by input hydraulic pressure oil in hydraulic ram, and guarantees that the downslide of guide runner puts in place.

Described slide compensation mechanism is made up of connecting device, gland, piston rod, little cover, cylinder body, spring, spacer, piston and cylinder bottom, and wherein connecting device connects described hydraulic pressure combined oil cylinder by hinged with guide runner; Have deflation hole on the gland and can pass through to change the length that its precession length changes spring; Piston rod and spacer weld together are processed with deflation hole on the spacer wherein; Having outrigger shaft on the described piston communicates by oil duct with oil inlet.

Compared with prior art, the utility model has the advantages that conspicuously, mainly show: (1) has improved the safe reliability of clamp gripping slab; (2) improved the gripping efficient of clamp.

Description of drawings

Fig. 1 is the electric translational type slab clamp front view;

Fig. 2 is the lateral plan of Fig. 1;

Fig. 3 is an electric translational type slab clamp tong arm assembly drowing;

Fig. 4 is hydraulic pressure combination cylinder structure scheme drawing.

Among the figure: 1, entablatrance, 2, the drop in beam frame, 3, switching mechanism, 4, cross sill, 5, tong arm assembling, 6, tong holder, 7, slide compensation mechanism, 8, hitch, 9, guide runner, 10, the pincers tooth, 11, sliding support hinge, 12, connecting device, 13, gland, 14, piston rod, 15, little cover, 16, cylinder body, 17, spring, 18, spacer, 19, piston, 20, cylinder bottom.

The specific embodiment

Electric translational type slab clamp as the band slide compensation mechanism of Fig. 1 ~ shown in Figure 4 comprises switching mechanism 3, tong arm assembling 5, entablatrance 1, cross sill 4, drop in beam frame 2, and switching mechanism 3 comprises three-in-one drive motor, sprocket wheel, chain, nut and screw rod; Comprise inclined ramp, tong holder, guide runner 9, pincers tooth 10, sliding bearing hinge 11, slide compensation mechanism 7 in the tong arm assembling 5.

Slide compensation mechanism 7 is made up of the hydraulic pressure combined oil cylinder of integrated retracing spring especially dish spring, and it comprises connecting device 12, gland 13, piston rod 14, little cover 15, cylinder body 16, spring 17, spacer 18, piston 19, cylinder bottom 20; Wherein, 12 is connecting device, and it passes through articulated lifting arm with hydraulic pressure combined oil cylinder and guide runner 9; 13 is gland, changes dish spring length as need and can change its screw-in length, is processed with the deflation hole that reduces damping; 14 is piston rod and spacer 18 weld togethers, and spacer 18 is processed with deflation hole; 17 for having applied the dish spring of certain precompressed compression; 19 is piston, and an end is processed with outrigger shaft; The P place is an oil inlet port.

Hydraulic pressure combined oil cylinder working process is as follows:

When hydraulic efficiency pressure system is in off working state,, make guide runner remain on initial position because dish spring 17 has been applied in certain precompressed compression;

When hydraulic efficiency pressure system is in running order, after the electric translational plate blank clamp applies initial gripping power to slab, crane rises and rises to the slab built on stilts, and in this process, hydraulic oil enters cavity from oil inlet port P, piston 19 enters and moves with hydraulic oil, drive piston rod 14 and spacer 18 motions, the motion of spacer 18 makes the dish spring produce compression displacement, and piston rod 14 drives guide runner along skateboarding by connecting device 12, its downslide is put in place, avoid clamp to skid and fall base to increase gripping power.

By controlled hydraulic system each guide runner thrust of clamp is equated, guarantee that each bite gripping power equates.

In the handling process can to the hydraulic efficiency pressure system pressurize to the slab handling to assigned address; Hydraulic efficiency pressure system release afterwards, the interior dish spring 17 of hydraulic actuating cylinder promotes spacer 18 under the effect that is compressed displacement and piston rod 14 is returned to original position, drives guide runner and finishes homing action smoothly.

Claims

1, a kind of electric translational type slab clamp with slide compensation mechanism, comprise entablatrance (1), drop in beam frame (2), switching mechanism (3), cross sill (4), tong arm assembling (5) and tong holder (6), connect by the drop in beam frame between the wherein said upper and lower crossbeam, upper and lower crossbeam is and is arranged vertically, and drop in beam frame and entablatrance are hinged, allow the rotation among a small circle of cross sill do; Switching mechanism places the top and the inside of cross sill, drive the drive screw of cross sill by three-in-one reducing motor, and move horizontally by its nut that drives in tong arm assembling, it is characterized in that: also comprise the slide compensation mechanism (7) that places in the tong holder, this slide mechanism and guide runner (9) are hinged by hitch (8); Described slide compensation mechanism (7) is made up of the hydraulic ram of integrated retracing spring (17), can apply Active Compensation power to the guide runner in the inclined ramp (9) by input hydraulic pressure oil in hydraulic ram, and guarantees that the downslide of guide runner (9) puts in place.

2, the electric translational type slab clamp of band slide compensation mechanism according to claim 1, it is characterized in that: described slide compensation mechanism (7) is made up of connecting device (12), gland (13), piston rod (14), little cover (15), cylinder body (16), spring (17), spacer (18), piston (19) and cylinder bottom (20), and wherein connecting device (12) connects described hydraulic pressure combined oil cylinder by hinged with guide runner; Have deflation hole on the gland (13) and can pass through to change the length that its precession length changes spring; Piston rod (14) and spacer (18) weld together are processed with deflation hole on the spacer wherein; Having outrigger shaft on the described piston (19) communicates by oil duct with oil inlet P.

3, the electric translational type slab clamp of band slide compensation mechanism according to claim 2 is characterized in that: the spring in the described hydraulic ram is preferentially selected the dish spring for use.