DE7318855U - Overload control device for load lifting devices - Google Patents

Description

DIPL-INQ. DIETER JANDER

β MÖNCHEN 80 (BOGENHAUSEN) KOLBERGSR STRASSE 21 Γ · Ιβ! οη: 08 11/98 27 Ο · «

PATENT LAWYERS DR.-INQ. MANFRED BUNINCJ

reply to

1 BERLIN 33 (DAHLEM /
HOTTENWFG 15
Phone: 0311/83240 * 6
Telegrams: Conslderetloi erlln

280 / 15.035 DE May 16, 1973

Utility model registration
of the company

RUD chain factory
Rieger & Dietz

7084 Unterkochen / V / ürtt. "Overload control device for load handling equipment"

The innovation concerns an overload control device for load handling devices, especially chain sling, with at least one zv.'ischen two chain locks arranged depending on each other from the load to be absorbed deforming by a chain link formed overload control element.

03

Postal check account Berlin West 1743 84 Berliner Bank AG., Deposltenkasse 1

DIPL-INQ. DIETER JANDER DR..INQ. MANFRED BÖNINQ PATENT LAWYERS

Known also overload control devices of the above type, in which only one overload control element is arranged between the chain locks. Such a LOs ¹ OiIg is not able to fully satisfy when loads occur which involve the risk of the overload control element failing prematurely. The increase in price is based on the task of creating an overload control device in which the load-bearing means has an additional safety device in the area of the overload control element. According to the invention, this object is achieved in that the chain locks are additionally connected to one another via a _{piece of safety cord, which consists of three chain links whose pitch t & is} slightly greater than a third of the pitch ty of the overload control element and whose strength is at least equal to the strength of the load-bearing device is, and that that

"Tjerload control learner on his security + -" piece remote side in a manner known per se with web-like approaches serving to indicate its degree of deformation is provided.

The overload control device according to the invention offers the advantage that the load in the event of accidental destruction of the overload control element can be transmitted through the safety line piece. By the proposed arrangement and design of the safety line piece and the overload control element is a guarantee that the safety line piece immediately after a failure of the overload control element the forces to be transmitted and the middle of the three chain links can enter the interior of the overload control element unhindered.

It proves to be particularly advantageous if the web-like extensions of the overload control element are at their ends

DIPL-INC /. DIETER JANDER DRMNQ. MANFRED BONINQ PATENT LAWYERS

have staggered cutting edges, the overlap of which is a measure of the degree of deformation of the overload control element represents.

The overload control device according to the invention is explained in more detail below with reference to the accompanying drawing. Show it:

Fig. 1 is a side view of an overload control device

Fig. 2 is a plan view of an overload control element for the device according to FIG. 1

3 shows a plan view of a modified overload control element Type and

FIG. 4 shows a section along the line IV-IV in FIG. 3.

In Fig. 1, 11 and 12 are the connecting links of two chain strands 13 and 14 to be connected to one another These connecting links two chain locks 15 and 16 are arranged. These chain locks protrude on the one hand an overload control element 17 and on the other hand over one Safety cord piece 18 connected to one another, the latter consisting of three chain links 19. The division t ~ of the chain links 19 is slightly larger than a third the pitch ty of the overload control element 17.

The overload control element 17 is on one side with two serving to indicate its degree of deformation made of flat material existing web-like lugs 20 and 21 provided, the ends of the lugs 20 and 21 delimit a gap 22, whose size S provides a measure of the degree of deformation of the overload control element. By having the approaches 20 and 21 on one side of the overload control element 17

DIPL-INC-DIETERJANDER DR ₁ -INCMANFRED BONINC PATENT LAWYERS

are arranged, the middle of the links 19 of the Safety strand stack 18 with increasing deformation, i.e. leaching of the overload control element 17 »unhindered with one of its longitudinal legs, namely viewed in Fig. 1, to the left, into the interior of the overload control element hike.

Have the overload control element 23 according to FIGS the web-like lugs 24 and 25 at their ends cutting 26 and 27, which are depending on the degree of deformation of the ÜlDerlastkontrolleleinentes 23 can overlap to a greater or lesser extent. 28 is a brand on the Cutting edge 26 that does not reach from the edge of the cutting edge 27 should be.

Claims (2)

11 ItII * ■ t I I t · · DIPL-INO. DIETER JANDER »R.-INC. MANFRED BONINC / PATENTANWÄLTE Protection claims: 1. Overload control device for load handling devices, in particular chain slings, with at least one overload control element formed by a chain link and deforming depending on the load to be picked up, arranged between two chain locks, characterized in that the chain locks (15, 16) are additionally connected to one another via a safety cord piece (18) are, which consists of three chain links (19) whose pitch t _{G is} slightly larger than al? a third of the pitch t «of the overload control element (17, 23) and the strength of which is at least equal to the strength of the load-bearing emitter, and that the overload control element on its side facing away from the safety line piece in a manner known per se with web-like projections 20, 21 which serve to indicate its degree of deformation ; 24.25) "can be seen. 2. Overload control element according to claim 1, characterized in that the web-like approaches (24,25) have blades (26,27) arranged offset from one another at their ends, the overlap of which is a measure for represents the degree of deformation of the overload control element, MB: BD