EP2607290B1 - Rocker for hangers with display assembly - Google Patents

Description

The invention relates to a rocker for a hanger, with a maximum allowable relative tilt angle and with a rocker body having a central stop opening and two symmetrically arranged lateral suspension openings and with a display arrangement, which can be seen from outside the rocker a lying above the maximum allowable relative tilt angle skew indicates the rocker, wherein the display arrangement has at least two indicator edges, which are formed as indicator edges.

Rockers for hangers, such as rope, belt or chain hangers, are known and are used, for example, for lifting loads, which often weigh several tons. In order to lift particularly heavy loads, a hanger with multiple strands and, for example, a 4-strand hanger is usually used. The load thus depends, for example, on four chain strands which are intended to absorb the load evenly and to guide it to a central stop means. If joints for the chain strands are distributed inaccurately at the load or the individual chain strands have length tolerances, however, an uneven loading of the individual chain strands can occur. Instead of chain strands straps or ropes can be used. This can lead to only two of the four chain strands directing the load to the sling, resulting in overloading of the sling and, in extreme cases, failure of at least one of the chain strands. To compensate for such assembly or length tolerances, the rocker mentioned above is used.

However, the known rockers can compensate for the assembly or length tolerances only to a certain extent. In order to ensure a favorable load distribution within the rocker, the rocker should not be inclined beyond the maximum permitted relative tilt angle under load. The maximum allowable relative tilt angle is set with respect to a direction of the load acting on the stopper means. If the rocker is tilted due to the tolerances over the maximum allowable relative tilt angle with respect to the ideal stop direction, then a safe lifting of the load can no longer be guaranteed. The strands are loaded unevenly

In the US 2003/132183 A1 a device for adjusting the length of a sling is described. The device has an elongated, transverse to the stop direction opening and two laterally mounted hooks. In use, two strands of the sling are angled through the central opening and once each around one of the hooks. On the hook markings are attached indicating the maximum allowable angle at which the strands of the sling may be passed around the hooks. A disadvantage of this device is that this can not be used as a rocker for a hanger. In addition, no information about whether the device has reached a maximum allowable relative tilt angle on the markers. In the FR 2 647 767 A1 a device is described which has a single central opening for a hanger and at least two shackles for suspending loads. The shackles are rotatably mounted, so that the lifting device can be used for different sizes of the lifting. A body of the lifting device has numerical markings indicating the maximum allowable payload in response to the spread of the shackles. The device is not suitable for specifying an inclination above a maximum permissible relative inclination angle.

It is therefore the object of the invention to provide a rocker for a hanger, with which a load can be safely raised.

This object is achieved for the rocker mentioned above in that the indicator edges are formed by straight outer edges of a bottom of the rocker body.

Based on the display arrangement, a fitter installing the hanger can quickly and reliably detect whether the inclination or inclination of the rocker is above the maximum allowable relative inclination angle and may occur during installation tolerances balance out. This simple and quick control ensures safe lifting of the load.

The solution according to the invention can be further improved by various configurations which are advantageous in each case and can be combined with one another as desired. These embodiments and the advantages associated with them are discussed below.

In a first advantageous embodiment, the display arrangement may comprise at least one visually perceptible indicator element. The indicator element differs for better visibility, for example, color of the rocker body. Such an indicator element can indicate the inclination of the rocker and possibly read without the use of other tools. So that the indicator element at any time represents the inclination of the rocker, it can move with the rocker body. For example, the indicator element can be connected to the rocker body in a manner that is resistant to movement or can be part of the rocker body. In order to be able to quickly and easily check whether the rocker is inclined or inclined beyond the maximum permissible relative inclination angle, the indicator element can represent the maximum permissible relative inclination angle.

According to a particularly advantageous, because structurally simple embodiment, the indicator element may be formed as an indicator edge. The indicator edge can be straight, so that it is easy to see in which direction the indicator edge extends. In particular, the indicator edge can be aligned so that it is arranged on reaching the maximum allowable relative tilt angle along a predetermined angle relative to the stop direction in which the stop load acts on the stop opening or the stop means. For example, the indicator edge can be aligned perpendicular or parallel to the stop direction when the inclination of the rocker reaches the maximum permissible relative tilt angle. Such an orientation of the indicator edge is visually perceptible even without aids, so that reaching the maximum allowable inclination of the rocker can be easily determined. So that the indicator edge can be seen more quickly, this color can be offset from the rocker body.

Due to the often harsh conditions and the large forces acting on the rocker, there is a risk that the indicator element will be damaged. In order to make the indicator element sufficiently robust for the intended use, the indicator element can be formed by an outer edge of the rocker body. Even if the outer edge has, for example, smaller damages caused by impacts, it extends at one otherwise intact and ready to rocker but still substantially along their original direction and thus can safely indicate the inclination of the rocker.

In particular, an underside of the rocker body pointing away from the stop opening may be formed with the indicator edge, since in use it is best visible to the installer. The molded on the bottom indicator edge is arranged on reaching the maximum allowable relative tilt angle in an optically easily detectable angle, for example, vertically or horizontally to the ideal stop direction.

If the indicator edge runs parallel to the stop direction in an inclination state of the rocker which is still admissible, it indicates that the maximum permissible relative inclination angle has been reached in an easily perceptible manner. Consequently, in addition to or as an alternative to the outer edge, such an indicator edge may be provided. This indicator edge may be formed as one side of an indicator tongue and run parallel to the stop direction upon reaching the maximum allowable relative tilt angle. Also, the side of the indicator tongue and possibly the entire indicator tongue can be colored to visually settle from the rest of the rocker. In order to avoid damage to the indicator tongue, for example by bending, it may be embedded in the rocker body. For example, the indicator tongue projecting into a central opening of the rocker body. In order that the indicator edge provided on the indicator tongue can move with the rocker body, the indicator tongue can be connected to the rocker body in a manner that is resistant to movement. For example, the indicator tongue is attached to the rocker body or formed integrally therewith.

Comparing the orientation of the indicator edge with the touch direction by eye can be prone to error. Consequently, in a further advantageous embodiment, the display arrangement of the rocker can have a pointer which is movable relative to the indicator element and indicates the inclination of the rocker during operation. If the inclination of the rocker reaches the maximum permissible relative inclination angle, the pointer can point, for example, to the indicator element. The indicator element is designed, for example, as the indicator edge of the indicator tongue. Alternatively, the indicator element may be formed as an indicator mark, for example an arrowhead, a dot, a dash or any other visually perceptible structure.

The pointer may have a fastening portion, via which the pointer is connectable to the rocker body. In an advantageous embodiment, which is easy to handle, the pointer can be designed to be connectable to it via its fastening section and the stop means for striking the rocker. The pointer can over the stop means in particular be captive connected to the rocker. The stop means is for example a shackle with an insertable into the stop opening retaining bolt. For connection to the stop means of the attachment portion of the pointer may have a hole whose inner diameter is greater than the outer diameter of the retaining bolt.

The pointer can be freely swinging connected to the stop means so that it points as a perpendicular in the direction of gravity. However, the freely oscillating pointer only correctly indicates the inclination of the rocker when the stop direction corresponds to the direction of gravity. In addition, free swinging of the pointer may be hampered by other factors. To ensure that the pointer indicates the inclination of the rocker body relative to the stop direction, this may have an alignment device in which the stop means is receivable in a predetermined mounting position. To ensure that the pointer is properly aligned, the stop means can be received by the alignment device, in particular in only a single mounting position. In the mounting position, the pointer can point parallel to the ideal stop direction and in particular counter to the direction of the stop force acting on the stop means.

Thus, the pointer remains aligned even with a twisted rocker body parallel to the direction of attack, the pointer can be rotationally rigidly connected to the stop means by the alignment assurance. For example, the pointer may have two securing tabs between which the stop means, for example a leg of the shackle, can be mounted and substantially positively received at least in sections.

The pointer may be formed as a stamped, forged, cast and / or lasered part, the securing tabs are bent after punching. For better visibility of the pointer this can stand out in color from the rocker body. The rocker does not have to be designed as a stamped part. It can also be produced by prototyping, for example forging or casting, or by another separation method, for example laser cutting. The rocker can also be forged, cast, stamped or lasered.

In a further advantageous embodiment, the display arrangement may have a spirit level fixed to the rocker body with a display bubble and at least one scale line. The dragonfly can detect and display inclinations very accurately, the display bubble representing as a pointer a current relative inclination angle of the rocker and the at least one scale line as an indicator element the maximum permissible relative inclination angle. As already described above, the display arrangement can also in this embodiment have several indicator elements, so scale marks. The dragonfly may be oriented perpendicular to an ideal orientation of the rocker with respect to the stop direction, so that the display bubble is centered between two scale lines with a balanced load on the rocker.

In order to forward as large loads as possible, the rocker body may be formed with a truss structure. The truss structure allows the construction of a particularly stable rocker, the weight of the rocker body is not unnecessarily increased.

The truss structure may in particular have a triangular compartment, at the corners of the stop and suspension openings may be arranged. The sides of the triangular compartment running between the suspension openings and the stop opening are preferably as tension rods and a side of the triangular compartment extending between the suspension openings is preferably designed as a compression rod. The push rod may be curved toward the stop opening to or away from it to evenly distribute pressure forces caused by the load.

At least one of the suspension openings may be provided with an insertion opening to connect one of the chain strands with the rocker. The insertion opening may have a clear width which is smaller than the inner diameter of the suspension opening. For example, the suspension opening may be limited by a hook claw, wherein the load from the chain strand in the hook claw can be introduced. The insertion opening may be flanked by a hook tip of the hook claw and a boundary web. The boundary web can project from one side of the rocker body between the suspension opening and the stop opening. In order to avoid that the chain hooks on the boundary web, a free end of the boundary web can pass into a Abweissteg which extends from the Einhängeöffnung to the nearest side of the rocker body.

The truss structure may surround a central opening of the rocker body. As a result, the weight of the rocker body can be reduced, without affecting its mechanical stability. The central opening may connect to the stop opening or be connected by a connecting channel with this. A clear width of the connecting channel can allow an elastic deformation of the pressure ridge in the direction of the stop opening to or from it. Further, the indicator tab may protrude into the central opening and be protected from damage by the sides of the compartment. The indicator tongue is preferably based on the pressure rod and is arranged centrally on this.

The display arrangement has hitherto been described with only one indicator element. However, since the rocker can be inclined in at least two directions relative to the stop direction, the rocker per direction has a maximum allowable relative tilt angle. Thus, the display assembly may include at least two indicator elements that limit a range of allowable relative tilt angles. As an example, the rocker may have two indicator edges or two indicator marks. In addition, the display device may also be provided with more than two indicator tenors, the z. B. a scale forming a more accurate determination of the tilt of the rocker allow.

A secure attachment of the hanger with Aufhängegliedem on the rocker can be achieved according to an advantageous development when the suspension openings open via a preferably slot-shaped insertion opening to the outside and the insertion opening has a smaller inside diameter than the associated Einhängeöffnung. The insertion opening may in particular extend in a straight line from an outer edge of the rocker to the insertion opening. In this embodiment of the suspension openings, a pressed-off suspension member can be captively suspended in the suspension opening. In order to remove the hangers with suspension in operation quickly from the rocker and, for example, to use without rocker, insertion and / or hanging opening can be without closure means, so remain open during operation.

The invention is explained below by way of example with reference to exemplary embodiments with reference to the drawings. The different features of the embodiments can be combined independently of each other, as has already been explained in the individual advantageous embodiments.

Fig. 1

eine schematische Darstellung eines ersten Ausführungsbeispiels einer erfindungsgemäßen Wippe;

Fig. 2

eine schematische Darstellung eines zweiten Ausführungsbeispiels der erfindungsgemäßen Wippe;

Fig. 3

eine schematische Darstellung eines dritten, nicht zur Erfindung gehörenden Ausführungsbeispiels der erfindungsgemäßen Wippe;

Fig. 4

eine schematische Darstellung des nicht zur Erfindung gehörenden Ausführungsbeispiels der Fig. 3, wobei die Wippe schräg gestellt ist;

Fig. 5

eine vergrößerte Ansicht eines Ausführungsbeispiels eines Zeigers der Wippe der Figuren 3 and 4.

Fig. 6

eine schematische Darstellung eines vierten, nicht zur Erfindung gehörenden Ausführungsbeispiels der erfindungsgemäßen Wippe.

Show it:

Fig. 1

a schematic representation of a first embodiment of a rocker according to the invention;

Fig. 2

a schematic representation of a second embodiment of the rocker according to the invention;

Fig. 3

a schematic representation of a third, not belonging to the invention embodiment of the rocker according to the invention;

Fig. 4

a schematic representation of not belonging to the invention embodiment of Fig. 3 , wherein the rocker is tilted;

Fig. 5

an enlarged view of an embodiment of a pointer of the rocker of FIGS. 3 and 4 ,

Fig. 6

a schematic representation of a fourth, not belonging to the invention embodiment of the rocker according to the invention.

First, construction and / or function of a rocker according to the invention with respect to the embodiment of Fig. 1 described.

Fig. 1 shows the rocker 1 schematically in a front view. The rocker 1 is formed with a rocker body 2, which may comprise a truss structure. The truss structure of the rocker body 2 may comprise a compartment 3, substantially triangular and may be formed in particular as an isosceles triangle. Legs 4, 5 of the rocker body 2 surround a tip of the equilateral triangle, in which a stop opening 6 is provided for attaching the rocker 1 to a stop means. The tip of the substantially triangular rocker body 2 is shown here flattened only by way of example. One of the stop opening 6 opposite base 7 of the rocker body 2 extends between Einhängeöffnungen 8, 9 for connecting the rocker 1 with a load to be lifted chain strands. The suspension openings 8, 9 can be provided in particular in the region of corners or base angles at which the legs 4, 5 meet the base 7.

The legs 4, 5 of the substantially triangular-shaped compartment 3 can be designed as tension rods and the base 7 as a pressure rod. In the region of the tip of the triangular compartment 3, the legs 4, 5 can be connected to each other in a force-transmitting manner via a first node 10. The legs 4, 5 can each be connected in a force-transmitting manner to the base 7 via a second or a third node 11, 12.

The suspension openings 8, 9 may be formed by suspension claws or hook claws 13, 14, which are to be opened substantially in the direction of the Anschlagöffung 6 and respectively at the second and at the third node 11, 12 are fixed. Hook tips 15, 16 can each point to a boundary web 17, 18. Between the limiting webs 17, 18 and the hook tips 15, 16 can each insertion opening 8, 9 a particular slot-shaped insertion opening 19, 20 extend over the example, a suspension member (not shown) of a chain strand or a belt or rope assembly in the insertion opening 8, 9 is suspended.

The suspension member may have a printed location at which its diameter is reduced and which may be slid through the insertion opening 19, 20. Will the suspension link then rotated in the respective suspension opening 8, 9, the suspension member is captively hooked into the rocker, if the not oppressed material diameter is greater than the inside diameter of the insertion opening.

In order that the suspension links and the lifting strands attached thereto can be removed quickly from the rocker, the insertion openings preferably remain open during operation. Neither the insertion, nor the insertion so advantageously have closure means with which they can be closed.

In order to avoid that the suspension member hangs on the boundary web 17, 18 and not in the hook claw 13, 14, a Abweissteg 21, 22 may be provided. The Abweissteg 21, 22 may extend from a free end of the boundary web 17, 18 to the respective nearest leg 4, 5 of the rocker body 2.

At least the shank 4, 5 and the base 7 comprehensive compartment 3 can be made of a piece of metal and in particular burned, forged or cast. The hook claws 13, 14 and / or the boundary webs 17, 18 and the Abweisstege 21, 22 may integrally formed with the tray 3 form the rocker body 2. As an alternative to the illustrated framework structure, the compartment 3 can also be designed as a plate provided with the stop opening 6 and the suspension openings 8, 9 and otherwise continuous.

In the proper use of the rocker 1, a chain strand is ever suspended in one of the suspension openings 8, 9 and transmits a weight load of a material to be lifted on the rocker 1. The rocker 1 transmits the weight load to a at least partially extending through the stop opening 6 stop means. The stop means is, for example, a shackle with a retaining bolt, wherein the retaining bolt extends in the use of the rocker 1 through the Anschlagöffnüng 6 and the rocker 1 hangs on the retaining bolt.

If the suspension openings 8, 9 are equally loaded, a holding force holding the rocker 1 and applied by the abutment means extends relative to the rocker body 2 in an ideal abutment direction A. The ideal abutment direction A is, for example, essentially parallel to an angle between the legs 4 5 bisecting bisector H aligned. If the suspension openings 8, 9 are loaded with different weights or in different directions, then the rocker 1 can be tilted substantially around the stop opening 6 by a current relative tilt angle w, so that an actual stop direction a is also tilted in comparison to the ideal stop direction A. , In the embodiment of Fig. 1 Furthermore, a stop direction A 'that is just still permissible is shown, which tilts about a maximum permissible relative inclination angle W to the ideal stop direction A. is. The maximum permissible relative inclination angle W can be, for example, 10 °. In the embodiment of Fig. 1 is the stop direction A 'with respect to the ideal stop direction A in the clockwise direction by the maximum allowable relative tilt angle W tilted. Alternatively or additionally, the rocker 1 and thus also the current stop direction a can also be tilted counterclockwise during operation up to a maximum permissible relative tilt angle W '. In the Fig. 1 However, the rocker 1 is shown ideally aligned.

In order to be able to recognize whether the rocker 1 is tilted by a permissible relative inclination angle W, the rocker 1 can have a display arrangement 23. The indicator assembly 23 may include at least indicator member 24 that is visually perceptible and that represents the maximum allowable relative tilt angle W. If the rocker 1 is allowed to be tilted in operation in two directions until the maximum permissible relative inclination angle W, W 'is reached, the display arrangement 23 can also have a plurality of, and in particular two indicator elements 24, 24'.

According to the embodiment of the Fig. 1 is the rocker 1 with two indicator elements 24 24 'is formed. The indicator elements 24, 24 'may be formed by indicator edges 25, 25', which extend along a predetermined direction when the maximum allowable relative inclination angle W, W 'is reached. For example, one of the indicator edges 25, 25 'can be aligned parallel to a constant line L, wherein the constant line L runs perpendicular to the ideal stop direction A.

The indicator edges 25, 25 ', with a balanced distribution of the load on the Einhängöffnungen 8, 9 relative to the constant line L to the maximum allowable relative inclination angle W, W' in the respective orientation to be tilted clockwise or counterclockwise. As a result, the base 7 can be convex at least on one side or concave as shown. The uniform load line L may be, for example, a horizontal line if the ideal stop direction A is parallel to gravity. The orientation of the indicator edge 25 to the constant line L can be controlled in this case, for example, purely visually or with the aid of a spirit level.

Due to the truss structure, the rocker body 2 can have a central opening 26 surrounded by the legs 4, 5 and the base 7, which is helpful in reducing the weight of the rocker 1. The limiting webs 17, 18 can each with the Abweisstegen 21, 22 and the legs 4, 5 lateral openings 27, 28 enclose and thereby further reduce the weight of the rocker 1.

The indicator edges 25, 25 'are preferably formed by a side facing away from the stop opening 6 bottom U of the rocker body 2. In particular, the indicator edges 25, 25 'can be formed by outer edges R of the underside U.

Fig. 2 shows the rocker 1 schematically in a further embodiment. For elements that function and / or structure the elements of the embodiment of Fig. 1 correspond, the same reference numerals are used. For brevity, only the differences from the embodiment of Fig. 1 received.

In the Fig. 2 is the maximum allowable relative tilt angle W with respect to the ideal stop direction A clockwise aligned. Alternatively or additionally, the maximum permissible relative inclination angle W 'can be oriented counterclockwise.

The pressure rod formed by the base 7 is not as in the Fig. 1 concave or convex, but formed with a constant thickness. If the reception and distribution of loads makes a concave or convex shape of the pressure rod of the base 7 appear advantageous, the pressure rod can also be concave or convex in this embodiment as well as in the following embodiments.

To indicate the inclination of the rocker 1, an indicator tongue 29 may be provided. The indicator tongue 29 may be based on the base 7 and projecting in the direction of the stop opening 6 in the central opening 26. In this case, the indicator tongue 29 is preferably arranged centrally between the suspension openings 8, 9 and in the ideal stop direction A in front of the stop opening 6. In the ideal stop direction A, the indicator tongue 29 can taper so that at least one side 30, 31 of the indicator tongue 29 extends below the maximum permissible relative tilt angle W or W 'to the ideal stop direction A. If the maximum permissible relative inclination angles W, W 'are the same, the sides 30, 31 of the indicator tongue 29 can be aligned with one another at an angle 2W which can correspond to the sum of the amounts of the maximum permissible relative inclination angles W, W'.

The stopper opening 6 and the central opening 26 may be connected to each other by a connecting channel 32. Transverse to the ideal stop direction A, the connecting channel 32 may have a width or clear width B which is smaller than the diameter of the stop opening 6.

The 3 and 4 show an embodiment of the rocker 1 not belonging to the invention, wherein the rocker body 2 of the Fig. 4 by a relative to the maximum allowable relative tilt angle W relative inclination angle w with respect to the rocker 1 of Fig. 3 Slanted is shown for

Elements that correspond in function and / or construction to the elements of the embodiments of the previous figures, the same reference numerals are used. For brevity, only the differences from the previous embodiments will be discussed.

The 3 and 4 show the display assembly 23 of the rocker 1 with a pointer 33 and the indicator tongue 29. The pointer 33 has a mounting portion 34, via which the pointer 33 relative to the indicator element 24, 24 'is movably connected to the rocker body 2. For example, the fastening portion 34 is formed with a stop opening 6 'whose diameter corresponds at least to the diameter of the stop opening 6 of the rocker body 2. If the rocker 1 attached to the stop means, so for example, the retaining bolt through the stop openings 6, 6 extend 'and connect the pointer 33 with the rocker body 2.

The pointer 33 may further comprise an indicator portion 35 which adjoins the mounting portion 34 against the ideal stop direction A. The stop opening 6 'may be arranged so that the mass of the pointer 33 is arranged in majority in the indicator section 35. If the pointer 33 is freely swinging connected to the rocker body 2, the pointer 33 can always point in the direction of gravity as a solder. If the ideal stop direction A is not aligned parallel to the direction of gravity or if the pointer 33 should always point parallel to the current stop direction a, the pointer 33 can also be connected in a rotationally fixed manner to the stop means.

The indicator section 35 may be provided with a tip pointing in the opposite direction of the stop direction A or an arrow-shaped indicator structure 36, for example.

The indicator tongue 29 is shown here formed with indicator edges 25, 25 ', which in the embodiment of Fig. 3 are aligned parallel to each other and the ideal stop direction A. Since the pointer 33 now indicates the inclination S of the rocker body 2, a comparison of the orientation of the indicator edges 25, 25 'with a predetermined direction is no longer necessary. Rather, the distance of the indicator edges 25, 25 'may be selected so that the pointer 33 and in particular its indicator structure 36 to one of the indicator edges 25, 25' to, if the inclination S of the rocker 1 reaches the maximum allowable relative tilt angle W, W ' , The indicator edges 25, 25 'of the indicator tongue 29 need not, as in Fig. 3 parallel to each other, but may also be at an angle to each other. For example, the embodiment of the Fig. 2 be used with a pointer 33, so that upon reaching the maximum allowable relative tilt angle W, W 'of the pointer 33 on the indicator edges 25, 25 'and in the direction of the indicator edges 25, 25' points or is aligned with the indicator edges.

In a further, not shown here embodiment, the Indikatoörabschnitt 35 of the pointer 33 may be longer than shown and in particular formed so long that it extends at least to near the base 7 of the rocker body 2. In this case, the indicator tongue 29 can be dispensed with and the indicator elements 24, 24 'can be provided, for example, as indicator markers provided on the basis 7. However, indicator brands have the disadvantage that they are no longer easily recognizable after prolonged use of the rocker due to wear, contamination or damage to the surface.

In the Fig. 4 is the rocker body 2 tilted by the maximum allowable relative tilt angle W clockwise. The pointer 33 is further aligned parallel to the ideal stop direction A. In this just still permissible inclination of the rocker body 2, the indicator structure 36 points to the indicator element 24 and to the indicator element 24 representing the indicator edge 25 of the indicator tongue 29. If the Indikatorreige 29 as in the embodiment of Fig. 2 In the illustrated embodiment, the indicator structure 36 in particular on one end of the indicator edge 25. As soon as the indicator structure 36 points to an area outside of the indicator tongue 29, the Rocker body 2 inclined beyond the maximum allowable relative tilt angle W.

Fig. 5 shows the pointer 33 of the embodiment of 3 and 4 schematically in an enlarged perspective view. The attachment portion 34 is not only shown with the stopper opening 6 'but also with a securing tabs 37, 38 having alignment assurance K. The securing tabs 37, 38 may be, for example, bent side parts of the pointer 33 and arranged so that the stop means and in particular a leg of the shackle between the securing tabs 37, 38 can be arranged. On the one hand, the securing tabs 37, 38 indicate a mounting position of the pointer 33 in relation to the mounting means. On the other hand, the securing tabs 37, 38 may be arranged so that the pointer 33 is rigidly connected to the stop means and thereby always points in the current stop direction a. As a result, the display of the skew S is independent of gravity. The securing tabs 37, 38 are preferably designed as limiting or retaining tabs that limit rotation of the pointer 33 with respect to the stop means or the pointer 33 can hold against rotation on the stop means.

Fig. 6 shows a further not belonging to the invention embodiment of the rocker 1 in a schematic side view. The display assembly 23 may according to the illustrated embodiment, a bubble level 39 having attached to the base 7 and in particular may be embedded in this. The dragonfly 39 may be provided on the rocker body 2 so that it is visible perpendicular to or in the ideal stop direction A. As a pointer 33, the display device 23, a display bubble 40 has. Indicator elements 24, 24 'are designed according to the embodiment shown as scale marks 41, 41' of the level 39. The scale marks 41,41 'can be arranged so that the display bubble 40 in the presence of the ideal stop direction A substantially centrally between the scale lines 41, 41' and when reaching the maximum allowable relative tilt angle W, W 'on one of the scale lines 41, 41st 'is arranged adjacent. When using the dragonfly 39, the inclined stiction S of the rocker body 2 can be determined very accurately. However, the actual relative inclination angle w can only be compared to the direction of gravity with the maximum permissible relative inclination angle W, W '.

The rockers described above can be used equally for chain, rope or belt hangers.

Claims (14)

1. Balancer (1) for a hoist, with a maximum permissible relative angle of inclination (W, W') and with a balancer body (2) that has a central attachment opening (6) and two lateral suspension openings (8, 9) arranged symmetrically to it, and with an indicator arrangement (23) that indicates, such that it is visible from outside the balancer (1), an inclined position (S) of the balancer (1) that goes beyond the maximum permissible relative angle of inclination (W, W'), wherein the indicator arrangement (23) comprises at least two indicator elements (24, 24') which are formed as indicator edges (25, 25'), characterised in that the indicator edges (25, 25') are formed by straight outer edges (R) of an underside (U) of the balancer body (2) that faces away from the attachment opening (6).
2. Balancer (1) according to Claim 1, characterised in that at least one further indicator edge (25, 25') is formed by a side (30, 31) of an indicator tongue (29) of the balancer (1).
3. Balancer (1) according to Claim 1 or 2, characterised in that the indicator arrangement (23) has a pointer (33) that is movable relative to the indicator element (24, 24') and that indicates the inclined position (S) of the balancer (1) during operation.
4. Balancer (1) according to Claim 3, characterised in that the pointer (33) has an attachment segment (34) that is developed such that it can be connected in a manner such that it cannot be detached to a slinging mean for attaching the balancer (1).
5. Balancer (1) according to Claim 3 or 4, characterised in that the pointer (33) has an alignment securing device (K) in which a slinging mean for attaching the balancer (1) can be accommodated in a predetermined assembly position.
6. Balancer (1) according to Claim 5, characterised in that the pointer (33) can be connected by means of the alignment securing device (K) to a slinging mean for attaching the balancer (1) such that it does not rotate with respect to the slinging mean.
7. Balancer (1) according to one of the Claims 1 to 6, characterised in that the indicator arrangement (23) has, affixed to the balancer body (2), a spirit level (39) with an indicator bubble (40) and at least one tick mark (41, 41'), wherein the position of the indicator bubble (40) represents a current relative angle of inclination (w) and the tick mark (41, 41') represents the maximum permissible relative angle of inclination (W, W').
8. Balancer (1) according to one of the Claims 1 to 7, characterised in that the balancer body (2) is developed with a framework structure.
9. Balancer (1) according to Claim 8, characterised in that the framework structure has an essentially triangular framework section (3) on the corners of which the attachment opening (6) and suspension openings (8, 9) are arranged.
10. Balancer (1) according to Claim 8 or 9, characterised in that the framework structure encloses a central opening (26) that is connected to the attachment opening (6).
11. Balancer (1) according to Claim 8 or 9, characterised in that the indicator tongue (29) projects into a central opening (26) of the framework structure.
12. Balancer (1) according to one of the Claims 1 to 11, characterised in that at least one of the suspension openings (8, 9) is provided with an insertion opening (19, 20) that runs along a limiting tab (17, 18), wherein the limiting tab (17, 18) projects from a side (4, 5) of the balancer body (2) running between the suspension openings (8, 9) and the attachment opening (6).
13. Balancer (1) according to one of the Claims 1 to 12, characterised in that the suspension openings open outwards via an insertion opening (19, 20) and the insertion opening has an inner width that is less than that of the suspension opening (8, 9).
14. Balancer (1) according to one of the Claims 1 to 13, characterised in that the insertion and / or suspension openings (19, 20; 8, 9) are free of closing elements.

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