CN102963815A - Four-claw double-lever plate blank clamp - Google Patents

Abstract

The invention discloses a four-claw double-lever plate blank clamp, which comprises clamp teeth, two groups of levers, inner clamp arms, outer clamp arms, balance rods, inner bent rods, outer bent rods, inner pull rods, outer pull rods, a pulley group and an inverted type shutter, wherein the inverted type shutter and a guide plate are arranged between an upper beam and a lower beam; four sets of clamp body assemblies are provided; the pulley group is arranged on a rotary upper beam; and the clamp body assemblies consist of the inner clamp arms, the outer clamp arms, the balance rods, the inner bent rods, the outer bent rods, the inner pull rods and the outer pull rods. The four-claw double-lever plate blank clamp also comprises the inverted type shutter and an electric clamping claw selection mechanism; the pull rods, the bent rods and the clamp arms form two stages of combined levers; the inverted type shutter is arranged between the upper beam and the lower beam; and the electric clamping claw selection mechanism comprises a three-in-one speed reduction brake motor, an open type gear group, a screw rod, a screw nut, a hanging shaft, a guide seat and a guide arm. The four-claw double-lever plate blank clamp can supply 8 time of clamping force and perform reliable clamping; the yield is improved; long plate blanks and short plate blanks are not deformed; the production rate is improved; and the clamp is not required to be replaced.

Description

A kind of four paws double lever slab clamp

Technical field

The present invention relates to plate slab slings, relate in particular to a kind of four paws double lever slab clamp.

Background technology

The slab clamp that present steel mill generally uses is shown in Fig. 1-2, and its composition comprises: entablatrance 30, cross sill 31, pincers tooth 32, interior tong arm 33, outer tong arm 34, trammel beam 35, draw-in bar 36, outside link 37, hanger 38, switch circuit controller 39; In the middle of entablatrance 30 and the cross sill 31 switch circuit controller 39 and guide are housed, the caliper assembling is equipped with at two ends, and hanger 38 is equipped with at entablatrance 30 two ends, and crane hook hangs over herein.Guide is used for guaranteeing switch circuit controller 10 alignings.The caliper assembling is comprised of interior tong arm 33, outer tong arm 34, trammel beam 35, draw-in bar 36, outside link 37, and trammel beam 36 is exactly to illustrate the dotted line brace, and is balanced in order to guarantee the motion of two tong arms.Pull bar and tong arm form combined lever, with conducting oneself with dignity through amplification on the pincers tooth of tong arm lower end, form gripping power.The present domestic normal operation Q345B of the used material of clamp, its safety factor is 3 times.

The action principle of slab clamp is:

Slab clamp whenever presses down and lifts once, and the switch circuit controller mandrel rotates 90 °.The end of switch circuit controller mandrel is rectangular configuration, and in the rectangular channel of inserted base, floor installation is fixed on the cross sill, and when slab clamp pressed down continuously or lifts, switch circuit controller mandrel end and base will constantly throw off or tangle.When switch circuit controller mandrel end tangled base on the cross sill, tong arm was opened maximum opening, waited for gripping; When the base on the switch circuit controller mandrel end disengagement cross sill, tong arm is closed, until clamp slab, so far finishes the action of clamping slab.

The working process of slab clamp: the driver controls clamp and makes it horizontal in the slab central upper, and switching mechanism comprises a body skin and a dead bolt that is used for colluding tight lock, to finish the switching process.Shown in Fig. 3 a, it is that the T-shaped contact is locked lock that switch circuit controller cuts out, and jaw is in open mode and is suspended on the crane hook; Shown in Fig. 3 b, when dropping on the steel billet under the clamp, press down by deadweight again, switch circuit controller rotates 45 degree, promotes clamp, and switch circuit controller continues to turn 45 degree in the same way; Shown in Fig. 3 c, after the T-shaped contact was thrown off lock, jaw closed tightly, and the failure-free gripping power is provided, until put down slab.

Problem and shortcoming that this slab clamp exists are:

1, clamping the material material is limited in scope: can only the gripping carbon steel, and unreliable for the gripping of the materials such as corrosion-resistant steel, often fall base, smash equipment, even threaten personal safety;

2, limited to material length and range of temperatures adaptive capacity: to normal temperature, slab that rigidity is strong, 2 pawl clamp grippings are feasible; To the high temperature slab, when length is larger, the gripping midway location, two ends Yin Gaowen downwarp forms plastic deformation, becomes arc during cooling.

Summary of the invention

The present invention has overcome shortcoming of the prior art, and a kind of electronic spacing trapezoidal plate hack clamp is provided.

In order to solve the technical matters of above-mentioned existence, the present invention is achieved by the following technical solutions:

A kind of four paws double lever slab clamp, its composition comprises: pincers tooth, 2 groups on lever, interior tong arm, outer tong arm, trammel beam, interior knee, outer knee, draw-in bar, outside link, assembly pulley, trans switch circuit controller, trans switch circuit controller and guide plate are housed in the middle of entablatrance and the cross sill, 4 cover caliper assemblings also are housed, rotation is put the beams in place assembly pulley is housed, the caliper assembling is comprised of interior tong arm, outer tong arm, trammel beam, interior knee, outer knee, draw-in bar, outside link, also comprises trans switch circuit controller and electronic jaw selection mechanism; Pull bar and knee, tong arm form the two-stage combined lever; Described trans switch circuit controller is installed between entablatrance and the cross sill;

Described electronic jaw selection mechanism is installed in below the entablatrance in two cavitys, electronic jaw selection mechanism comprises three-in-one brake snub motor, the exposed gear group, leading screw, screw, hanging axis, guide holder, guide arm, three-in-one brake snub motor cabinet is contained on the entablatrance, its output shaft is connected with the exposed gear group, the exposed gear group is connected with screw, nut sleeve is on leading screw, the hanging axis of leading screw lower end is connected on the guide holder, guide holder is installed in two slide rails that cavity is interior under the entablatrance, guide holder can slide up and down at slide rail, and the guide holder lower end is connected on the caliper pull bar by axle.

Three-in-one brake snub motor output shaft in this mechanism is connected with beginning gear cluster key, and the opening degree that rotation screw elevating screw can be controlled two pairs of inboard clamps dwindles and amplifies, thereby determines with inboard clamp gripping slab outside still.

Action principle of the present invention is:

1, double lever reinforcement: lever boosting mechanism amplifies the suspension centre pulling force under the suspension centre, pass to second lever and amplify again, change simultaneously larger horizontal gripping power into, form friction force at the contact surface of inside and outside jaw and slab, this friction force is conducted oneself with dignity greater than slab, picks up slab.Because the second lever reinforcement increases than individual layer lever and to be twice.Can the very hard corrosion-resistant steel steel billet of failure-free clamping surface.

2, utilizing lifting mechanism lifting caliper to cause clamping the tooth opening degree changes: the four paws clamp, if simultaneously gripping has statically indeterminate problem.When the design uses in reality, can select according to slab length the caliper body of middle or both sides, obsolete caliper body is under the adjusting of electronic jaw selection mechanism, and the enlarged opening degree breaks away from the gripping scope.Realize that a bench clamp can the long and short base of gripping.

Working process of the present invention is as follows:

The driver aims at slab with clamp, falls on the slab.Continue to descend, tangle hook until the switch circuit controller axle rotates, discharge clamp, continue to promote, the pincers tooth is closed until clamp slab.Hoist.When the short base of gripping, with middle two pairs of calipers, when the long base of gripping, the driver is by change-over swith, the pincers teeth directional of middle two pairs of calipers is moved outward until opening degree greater than the opening degree of both sides caliper.Can use two outside calipers to carry out the gripping operation.

Because adopt technique scheme, a kind of four paws double lever slab clamp provided by the invention compared with prior art, the invention has the beneficial effects as follows:

1, stainless steel smelting factory uses the present invention to prove at home: the present invention can provide permanent 8 times of gripping powers, and clamping is reliable;

2, improve yield rate: the length slab is all indeformable;

3, boost productivity: need not change clamp.

Description of drawings

Fig. 1 is existing slab clamp front view;

Fig. 2 is existing slab clamp lateral plan;

Among the figure: 30 entablatrances, 31 cross sills, 32 pincers teeth, 33 interior tong arms, 34 outer tong arms, 35 trammel beams, 36 draw-in bars, 37 outside links, 38 hangers, 39 switch circuit controllers;

Fig. 3 is existing slab clamp gripping process scheme drawing;

Fig. 4 is the front view of a kind of four paws double lever of the present invention slab clamp;

Fig. 5 is the lateral plan of a kind of four paws double lever of the present invention slab clamp;

Fig. 6 is the different slab scheme drawings that clamp of pincers tooth opening degree.

The specific embodiment

Face is described in further detail the present invention with the specific embodiment by reference to the accompanying drawings:

A kind of 40 tons of four paws double lever slab clamps, as shown in Figure 3-4, its composition comprises: pincers tooth 1,2 groups on lever, interior tong arm 2, outer tong arm 3, trammel beam 4, interior knee 5, outer knee 6, draw-in bar 7, outside link 8, assembly pulley 9, trans switch circuit controller 10, trans switch circuit controller 10 and guide plate are housed in the middle of entablatrance and the cross sill, 4 cover caliper assemblings also are housed, rotation is put the beams in place assembly pulley 9 is housed, the caliper assembling is by interior tong arm 2, outer tong arm 3, trammel beam 4, interior knee 5, outer knee 6, draw-in bar 7, outside link 8 forms, and also comprises trans switch circuit controller 10 and electronic jaw selection mechanism; Pull bar and knee, tong arm form the two-stage combined lever; With conducting oneself with dignity through amplification on the pincers tooth of tong arm lower end, form gripping power;

As shown in Figure 4, described electronic jaw selection mechanism is installed in below the entablatrance in two cavitys, electronic jaw selection mechanism comprises three-in-one brake snub motor 11, exposed gear group 12, leading screw 13, screw 14, hanging axis 15, guide holder 16, guide arm 17,11 in three-in-one brake snub motor is contained on the entablatrance, its output shaft is connected with exposed gear group 12, exposed gear group 12 is connected with screw 14, screw 14 is enclosed within on the leading screw 13, the hanging axis 15 of leading screw 13 lower ends is connected on the guide holder 16, guide holder 16 is installed in two slide rails that cavity is interior under the entablatrance, guide holder 16 can slide up and down at slide rail, and guide holder 16 lower ends are connected on the caliper pull bar by axle.Thereby with the pull bar up-and-down movement in the moving caliper, cause opening degree to change, thereby also determine with clamp gripping the slab inboard or outside.

Caliper material of the present invention adopts the Q500D material, makes its safety factor reach 4.2 times.

Claims (2)

1. four paws double lever slab clamp, its composition comprises: pincers tooth, 2 groups on lever, interior tong arm, outer tong arm, trammel beam, interior knee, outer knee, draw-in bar, outside link, assembly pulley, trans switch circuit controller, trans switch circuit controller and guide plate are housed in the middle of entablatrance and the cross sill, 4 cover caliper assemblings also are housed, rotation is put the beams in place assembly pulley is housed, and the caliper assembling is comprised of interior tong arm, outer tong arm, trammel beam, interior knee, outer knee, draw-in bar, outside link; It is characterized in that:

Also comprise trans switch circuit controller and electronic jaw selection mechanism; Pull bar and knee, tong arm form the two-stage combined lever; Described trans switch circuit controller is installed between entablatrance and the cross sill;

Described electronic jaw selection mechanism is installed in below the entablatrance in two cavitys, electronic jaw selection mechanism comprises three-in-one brake snub motor, the exposed gear group, leading screw, screw, hanging axis, guide holder, guide arm, three-in-one brake snub motor cabinet is contained on the entablatrance, its output shaft is connected with the exposed gear group, the exposed gear group is connected with screw, nut sleeve is on leading screw, the hanging axis of leading screw lower end is connected on the guide holder, guide holder is installed in two slide rails that cavity is interior under the entablatrance, guide holder can slide up and down at slide rail, and the guide holder lower end is connected on the caliper pull bar by axle.

2. a kind of four paws double lever slab clamp according to claim 1, its composition comprises: the caliper material adopts the Q500D material.

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