DE3525218A1 - Tong-like grips for the transport of steel-strip coils - Google Patents

Abstract

The tong-like grips for material to be transported in the form of perpendicular circular cylinders with a central eye, e.g. steel-strip coils, have gripping arms which on the one hand are connected to a stirrup (which can be hung on a crane hook) via a toggle-lever linkage formed from links connected scissor-like to one another and on the other hand are connected directly to one another in an articulated manner via a strut and have shoes. The gripping arms can be moved towards and away from one another below and parallel to the strut, in which arrangement the gripping arms are guided in a support box in such a way as to be able to move to and fro in its longitudinal direction, which support box is arranged below and parallel to the strut and can be set down on the material to be transported, and the outer gripping arm is positioned on the circumference and the inner gripping arm is positioned in the eye of the material to be transported and comes to bear against its inside, and the two gripping arms are mounted on pins which are guided in elongated holes provided in side walls of the support box and form the articulations at the arranged bottom links of the toggle-lever linkage. Here, the elongated hole for the pin of the inner gripping arm is made shorter than the other hole.

Description

PLIERS GRIPPER FOR THE TRANSPORTATION OF

STEEL TAPE ROLLS (COILS) The invention relates to a pincer gripper according to the preamble of the main claim.

Such a pincer gripper is known (DE-GM 19 07 158) and has proven in practice. It has two elongated holes in the to guide the gripper arms Carrier box, which are the same size. This can depend on how the gripper is attached on the cargo lead to the fact that when lifting for the purpose of transporting the carrier box is moved on the top of the coil until both gripper arms or their Shoes on the inside resp.

Outside of the transported goods have come to the system.

This is particularly undesirable for steel belt rolls, because the sides of the wound steel strip can be damaged.

The invention is based on the object of a generic pincer gripper according to the preamble of the main claim so that when grasping The top of the transported goods is no longer damaged by moving the carrier box can be.

This task is carried out with a pincer gripper according to the preamble of Main claim solved according to the invention by its characterizing features. By the shorter elongated hole for the inner gripper arm becomes even if it is placed in an unfavorable manner the pincer gripper on the transported goods in the manner of a sequence control ensured, that first the inner gripping arm on the eye of the goods on the inside comes to rest and then remains in this position until the outer gripper arm at further lifting of the toggle linkage on the outside, the jacket, the transported goods comes to the plant.

Moving the carrier box along the top of the goods to be transported no longer takes place.

Appropriate refinements and developments of the invention are characterized in the subclaims.

A preferred embodiment of the invention is given below Explained in more detail with reference to the drawing.

It shows: FIG. 1 a pincer gripper according to the invention in a side view, in the locked spread position; Figure 2 the pincer gripper according to Figure 1, but in the gripping position for the transported goods, figures side view the gripping arms 3 and 4 Figure 5 shows a section V-V according to Figure 1.

As can be seen from Figure 2, the upper links 21 and 22, the connected to the lower links 24 and 23 like scissors to form a toggle linkage are hinged to a bracket 20 in a known manner. A horizontal strut 13 connects the lower links 23 and 24 in an articulated manner with one another and their free ends are hinged to the gripping arms 3.4 by means of bolts 8.9. These point to their lower, free ends also articulated when grasping the transported goods in the form of the steel strip roll 25 shoes 1,2 pressing against the outside and inside thereof.

The bolts 8.9 are each in an elongated hole 6.7 in its longitudinal direction guided back and forth movable. The elongated holes 6,7 are in one below the horizontal one Strut 13 attached parallel to this support box 5 arranged. For improvement the guide, the bolts 8,9 are carried by wear-resistant sliding blocks 10,11, the height of which corresponds to the width of the elongated holes 6.7 and which can be displaced in the longitudinal direction are led. Here, as Figure 5 shows, the remote ends of the bolts 8,9 with the sliding blocks 10,11 attached to them for reasons of stability with additional, their inner surfaces on the outer surfaces of the carrier box 5 pressing reinforcement means 12 may be provided.

As can be seen in particular from Figures 3 and 4, the gripping arms 3.4 designed as angle profiles.

The gripping arm 3 is mounted on bolts 8 at the apex of its angled profile. Its one thigh, intended for the exercise of grasping, extends from this bolt 8 through a longitudinal gap located in the bottom of the carrier box 5 down through it, its other leg extends inside the carrier box in its longitudinal direction. The other gripper arm, however, is at the end of itself within of the support box 5 extending legs mounted on the bolt 9 while his other leg, performing the gripping function, in the area between the two Bolt 8.9 through a longitudinal gap in the bottom of the carrier box 5 downwards extends. A pincer gripper of this type can also handle cylindrical goods grasp such that he with his gripper arm 3 on the outside, with the other Gripping arm 4 engages on the inside, in the eye of the transported goods.

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Claims (4)

TONGUE GRIPPERS FOR THE TRANSPORTATION OF STEEL TAPE ROLLS (COILS) 1. Pincer gripper for goods to be transported in the form of vertical circular cylinders with a central eye, e.g. B. Steel tape rolls (coils), the one hand on a scissor-like Interconnected handlebars formed toggle linkage with one on one Crane hook attachable bracket, on the other hand via a strut indirectly among each other articulated gripping arms having shoes below and parallel to the Strut against and apart are movable, with the gripping arms in one below the strut arranged parallel to this, can be placed on the transport goods carrier box are guided back and forth movable in the longitudinal direction and the outer gripping arm on the jacket, the inner gripper arm is placed in the eye of the transported goods and comes to rest on the inside and the two gripping arms are mounted on bolts are guided in the side walls of the carrier box provided elongated holes and form the articulations on the arranged lower links of the toggle linkage, characterized in that the elongated hole (7) for the bolt (9) of the inner gripping arm (4) is made shorter than the other hole (6). 2. Pincer gripper according to claim 1, d a d u r c h g e -k e n n z e i c h n e t that the displacement of the bolt (9) in the elongated hole (7) for the inner Gripper arm (4) at least the maximum play of the inner gripper arm with the attached Shoe corresponds to the eye of the transported goods. 3. Pincer gripper according to claim 1 - 2, d a d u r c h g e -k e n n z e i c h n e t that the gripping arms (3, 4) in a manner known per se as an angle profile are executed. 4. pincer gripper according to one of claims 1 to 3, d a -d u r c h it is noted that the one gripping arm (3) in the apex of its angular profile is mounted on the bolt (8), of which one executes the gripping function Legs down through a longitudinal gap in the bottom of the carrier box (5) and its other leg within the support box (5) in the longitudinal direction thereof extends, while the inner gripping arm (4) at the end of its inside the carrier box (5) is mounted on the bolt (9) extending in the longitudinal direction of the leg and with his other leg performing the gripping function in the area between the two bolts (8,9) through a longitudinal gap in the bottom of the carrier box (5) extends downwards.