EP3378822B1 - Dispositif de levage - Google Patents

Dispositif de levage Download PDF

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Publication number
EP3378822B1
EP3378822B1 EP18162325.7A EP18162325A EP3378822B1 EP 3378822 B1 EP3378822 B1 EP 3378822B1 EP 18162325 A EP18162325 A EP 18162325A EP 3378822 B1 EP3378822 B1 EP 3378822B1
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EP
European Patent Office
Prior art keywords
lifting device
lifting
control part
engagement
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18162325.7A
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German (de)
English (en)
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EP3378822A1 (fr
Inventor
Torsten Soonberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Stahl GmbH
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Carl Stahl GmbH
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Publication date
Application filed by Carl Stahl GmbH filed Critical Carl Stahl GmbH
Publication of EP3378822A1 publication Critical patent/EP3378822A1/fr
Application granted granted Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/34—Crane hooks
    • B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads

Definitions

  • the invention relates to a lifting device for lifting, transporting and depositing loads having the features in the preamble of claim 1.
  • a lifting device is for example off DE 20 2006 019 490 U1 known.
  • the known lifting device is a load hanger for lifting a load, with at least one, hinged at a free end of the load hanger pawl as a locking part, which is in the closed state for lifting a load in the region of a load-receiving zone of the load yoke and is pivotable such that a load-receiving means is detachable from the load bar.
  • the pawl includes two on one leg or a lifting arm of the load strap successively hinged slats, which extend in the closed state largely parallel to each other and across the opening of the load yoke and allow a load handling device, such as a rope or a chain, passed over this is to pick up a load.
  • the catch part forming the pawl is supported in this case in its locked position, each with an abutment, formed by the free ends of the lifting arms of the load hanger, from these.
  • the US 3,964,777 A. discloses a generic lifting device for lifting, transporting and depositing loads with a housing having two lifting arms defining therebetween a at least one side open load receiving space and each having an abutment against which a locking member in its latched position with the respective abutment is supported, which is guided in its dissolved position by means of an actuating device about a pivot axis rotatably movable, wherein the locking part is provided with a control part, the same in its actuated or unactuated state, the locking member in a translational movement transverse to the pivot axis of the same or brings into latching system with the respective abutment.
  • the invention has as its object to increase the reliability of a lifting device for lifting, transporting and depositing loads to the effect that accidental opening of the locking member from the latched or locked position is effectively avoided.
  • a lifting device is characterized in that the locking part has at its free end a detent which engages in the locked state in the wedge-shaped abutment on a lifting arm, and that at the free end opposite the end of the locking part, a further locking lug is formed, the in the locked state in abutment with the abutment on the other lifting arm, which is cylindrical or wedge-shaped.
  • the locking part is provided with a control part, which in its actuated or unactuated state, the locking member in a translational movement transversely to the pivot axis of the same out of or in latching contact with the respective abutment.
  • the control part By the control part, the reliability of the lifting device is increased to the effect that the latching of the locking member takes place in a different from the rotational opening or closing movement, translational movement.
  • the associated technical design of the lifting device prevents an opening movement of the latched locking part, since this must first be transferred from the latched position in translational motion in the released position to be opened from this position in a rotational movement.
  • the control part is a locking mechanism for the locking of the locking part, which connects the two lifting arms bridge-like manner in contact with the abutments and thus closes the open side of the load receiving space.
  • the force for the translational movement of the locking part is applied via the control part and in particular via a load acting on the locking part.
  • the locking part and the control part are connected to each other via a web portion such that at least in the latched position of the locking part a receiving space for a load-receiving means is formed as a subspace of the load receiving space.
  • locking and web part and control and web part are each at a right angle to each other, so that the composite of locking, control and web part forms a U-shape.
  • the component comprising locking, control and web part in such a way Swung in load receiving space, that at least the locking part, preferably locking and control part, abuts the lifting arm opposite the web part.
  • the locking part, the web part, the control part and the at least one lifting arm form the sides of the receiving space.
  • the position of the composite of locking, control and web part is fixed and the position of a recorded in the receiving space lifting device, such as a rope, a chain or a permanently attached to the load eyelet, set.
  • the locking part, the control part and the web part perpendicular to each other forms a component with the receiving space.
  • the load-receiving space delimited by the lifting arms has a substantially rectangular cross-sectional shape.
  • the transverse thereto arranged locking part is translationally movable.
  • a recess or a guide slot is preferably formed on at least one lifting arm on the receiving space associated inner surface, in which engage the free end of the locking part and can be moved in the direction of the abutment.
  • the locking part in a lifting arm associated with a housing portion is pivotable and moved out of the load receiving space.
  • the preferably bar or web-like locking part in the region of the free end of the respective lifting arm at the same time in abutment with the respective abutment can be brought.
  • a bar-shaped or ridge-like locking part provides a particular for the use of the lifting device suitable planar contact surface for a load-receiving means, such as a rope or a chain.
  • the abutments are arranged in each case one, preferably in a common, aligned perpendicular to the translational movement of the locking part level and formed in its shape corresponding to the locking part. This results in the advantage that the abutment unhindered in a translational movement of the locking member come into contact with this and form a support for the latched locking part.
  • the example cylindrical or wedge-shaped abutment are expediently designed counterpart to the locking part, wherein the latching part is provided a corresponding locking lug or recess.
  • a preferably acting on the control part restoring device preferably with a spring element, such as a compression spring provided, which causes a translational return movement of the locking part from the latched position to the released position. Due to the automatic, caused by the return device provision of the locking part a user-friendly, easy handling of the lifting device is ensured.
  • the restoring device is arranged in a housing part adjoining the control part, particularly preferably in the region of the pivot axis for latching and control part.
  • the lifting device in a further preferred embodiment of the lifting device according to the invention is in the region of the housing side, from the open side opposite end of the load receiving space provided the pivot axis for the rotational movement, and in particular the control part is arranged on the pivot axis and movable via the actuating device.
  • the control part is typically designed bar or web-like, wherein the pivot axis is particularly preferably arranged centrally.
  • the actuating device usually engages in an end region of the control part, particularly preferably in the connecting region of the web and control part, on the control part.
  • the restoring device is arranged in the region of the pivot axis arranged preferably centrally on the control part such that the restoring direction changes in accordance with the pivot position of the control part and a translational return of the locking part is effected only when positionally correct positioning of the control part. This is achieved in particular by the fact that the restoring device is not fixed to the housing but is fixedly arranged on the pivotable control part.
  • an operating element for a manual actuation and / or a motor preferably a battery-operated electric motor, for an automatic actuation.
  • designed as a control lever operating element results in a simple, reliable handling of the lifting device, which is opened as needed to bring in or take out a lifting device and closed again for the load operation or storage of the lifting device.
  • the two-point support of the locking part on the abutments in connection with the applied via the load-carrying means on the locking part force is essential.
  • a preferably acting on the control part further restoring device, preferably provided with a resilient element, which causes a rotational return movement of the locking part from the access to the load receiving space releasing position back into the load receiving space occluding position.
  • the locking part connected to the control part via the web part releases and closes the receiving space for the load receiving part in a corresponding manner.
  • the further restoring device is arranged stationarily on the housing of the lifting device and, with particular preference, engages in the region of the control part on which the actuating device also engages.
  • the further restoring device is particularly preferably arranged outside the region of the pivot axis, which is preferably arranged centrally on the control part, such that a rotational return of the locking part is effected independently of the pivoting position of the control part. In this way, the force required for provision force is applied particularly easily to the control and locking part.
  • an actuating part having the actuating device and the control part and further a carrier part adjoins a load-receiving part of the housing having the lifting arms, and in particular the carrier part comprises a receiving device for the lifting device.
  • the load-receiving part of the housing typically a lifting arm is widened or connects to a corresponding housing part, in which the locking part, in particular in conjunction with the web part and control part, is pivotable into.
  • the central control part for the movable components and the actuation and return mechanisms acting on the latter are arranged in the actuating part of the housing, which typically represents a central part of the housing.
  • the carrier part which particularly preferably adjoins the actuating part has, in particular, the function of enabling a reception of the lifting device, for example via a retaining ring.
  • the housing is composed of carrier part, operating part and fork-like load receiving part.
  • the lifting device with the housing and the components arranged therein as well as the receiving device has a flat shape.
  • the motor for the actuating device is arranged on the carrier part of the housing, preferably attached to the outside. In this way, no space for the motor is required in the load-receiving and operating part of the housing.
  • the motor is connected via a cable with the pivotally mounted control part.
  • the arrangement on the outside of the housing or of the carrier part has the advantage that the motor is accessible in a simple manner for maintenance or repair purposes and can not be arranged in the housing of the lifting device for reasons of space size.
  • Lifting device 10 shown in side view has a housing 12 with two lifting arms 14a and 14b.
  • the lifting arms 14a, 14b are directed downwards and opposite thereto a receiving device 16 is arranged at the top of the housing 12. This corresponds to the extent of the use position of the lifting device 10 when lifting, transporting and depositing loads.
  • the receiving device 16 is aligned as vertically parallel to the housing 12 Retaining ring formed and is penetrated for example by a crane hook.
  • the lifting arms 14a, 14b define a load receiving space 18 with the housing 12 connecting them.
  • the load receiving space 18 has a substantially rectangular cross-sectional shape and is open to one side, down here. Via this opening, a load-receiving means, such as a rope, a chain or a fixedly attached to the load eyelet, are introduced into the load receiving space 18.
  • a component 20 can be inserted, which has a locking part 24 for closing the open side of the load receiving space 18.
  • the locking part 24 is formed like a bar and connected to a control part 26 via a likewise beam-like web portion 28.
  • the locking part 24, the control part 26 and the web part 28 form the movable member 20 of the lifting device 10.
  • the component 20 is sometimes referred to as a "pawl".
  • the component 20, which is movable about a pivot axis S, is pivoted into the load receiving space 18 and delimits, with the lifting arm 14a shown on the right, a receiving space 22 for the load-carrying means not shown in the figures.
  • the receiving space 22 is a partial space of the load receiving space 18 and also has a substantially rectangular cross-sectional shape. According to a translational movement T1, in the representation of Fig. 1a from top to bottom, the locking part 24 has been brought into the locked position shown and there in abutment with abutments 30a, 30b.
  • the abutments 30a, 30b are each arranged in the end region of the lifting arms 14a, 14b assigned to the open side of the load receiving space 18 and are designed as a cylindrical web (abutment 30b) or as a wedge-shaped receptacle (abutment 30a).
  • a translational return movement T2 in the representation of Fig. 1b from bottom to top, the locking member 24 is in the released position and out of engagement with the abutments 30a, 30b brought.
  • Fig. 1b are the counter to the abutments 30a, 30b formed locking lugs 32a, 32b of the locking member 24 clearly visible.
  • the one latching nose 32 a is at the in the Fig. 1a to 1d shown on the right, free end of the locking part 24 is formed and engages in the wedge-shaped abutment 30a on the lifting arm 14a.
  • the locking lug 32b is formed to rest against and on the cylindrical abutment 30b on the lifting arm 14b.
  • Fig. 1b shown released position engages the locking member 24 with a locking lug 32a in a formed on web-like lifting arm 14a recess 34 (see. Fig. 1c and 1d ) one.
  • the component 20 can be pivoted about the pivot axis S in the block-like widened lifting arm 14b such that the other latching nose 32b of the latching part 24 protrudes from the housing 12 on the side of the lifting arm 14b opposite the load receiving space 18.
  • the pivot axis S is arranged centrally on the control part 26. In the region of the pivot axis S, a restoring device 36 for the translational return movement T2 of the latching part 24 is arranged.
  • Fig. 2 shows the return device 36 in detail.
  • a slot 38 is formed, in which a fastening bolt 40 is inserted along the pivot axis S and fixed to the housing 12 for pivotally mounting the control part 26.
  • a screw 24 is supported on this, which is acted upon by a compression spring 44.
  • the compression spring 44 causes a movement of the control member 26 in the vertical direction of the screw 42, corresponding to the translational return movement T2 in the vertical direction.
  • the screw 42 with the compression spring 44 as a central element of the return device 36 is arranged in an extension 46 of the web-like control part 26.
  • an operating element 48 which is arranged in the connecting region of web part 28 and control part 26, the control part 26 and with it the movable component 20 in a rotational movement R1 from the load receiving space 18 in the housing 12 is pivotable, as in Fig. 1c and 1d shown.
  • An opposing rotational return movement R2 is effected by the further restoring device 50, which is arranged in an actuating part of the housing 12 adjoining the pivoting region of the component 20.
  • the further restoring device 50 is a spring-elastic element fixed to the attachment point 54c.
  • the housing 12 and the components arranged in or on it are via fastening means, of which in the Fig. 1a to 1d only two are designated 54b and 54c, firmly connected.
  • the lifting device 10 is characterized in that the locking part 24 from the in the Fig. 1a locked position not shown in the Fig. 1c and 1d shown, the access to the load receiving space 18 releasing position can be moved.
  • the translational return movement T2 in the in the Fig. 1b shown dissolved position is imperative and thus constitutes a securing mechanism.
  • the control part 26 is connected to an insertion funnel 53 of an electric motor, not shown.
  • the resilient element comparable to a metal strip formed further restoring device 50 is located on the other lifting arm 14b associated part of the top of the control part 26 on this and exerts a spring force on this.
  • the rotational return R2 of the component 20 causes.
  • the elastic return device 50 rests against the end of the control part 26 assigned to the web part 28, the fastening means 54c representing the axis of rotation for the restoring force acting in the radial direction.
  • the cable 53 is guided through a slot 55 formed in the further restoring device 50 and open towards the free end.
  • the cable 52 engages the control part 26, wherein the force acting on the cable 52 electric motor rotational movement R1 to open the load receiving space 18 and the further restoring device 50 a rotational movement R2 for closing of the load receiving space 18 causes.
  • another cable can be provided on the free end of the control part 26 associated with the one lifting arm 14a and connected to the insertion funnel 53. About this further cable a restoring force on the control part 26 as part of the component 20 can be applied.
  • the electric motor is accommodated in a motor housing 58, which is arranged on the rear side of the housing 12, adjacent to the receiving device 16.
  • the actuator 48, the cable 52 and the two restoring devices 36, 50 all act on the control part 26, whereby a compact structure and a central control of the lifting device 10 are ensured.
  • Fig. 3 shows a side view of the lifting device 10 comparable to the Fig. 1d , wherein the housing 12 is shown completely closed. At the edge of the housing 12 fastening means 54a to 54j are arranged at a total of ten points. Next, the housing 12 at the in Fig. 3 shown Side an arcuate guide slot 56 for the control element 48. About the control element 48 is the control part 26, which in the illustration of Fig. 3 with its free end into the load receiving space 18 protrudes, operable and the locking part, which in the representation of the Fig. 3 with the detent 32b protrudes from the housing 12, movable.
  • the on the lifting arm 14 a, 14 b opposite side of the housing 12 formed receiving device 16 is in the side views of Fig. 4a, 4b and 4d good as well as in the side view of the Fig. 4c visible only with the over the housing 12 laterally projecting part.
  • the side views of Fig. 4a to 4d can be removed that only the fastening means 54a, 54j for fastening the web-like, cylindrical abutment 30b and the screw 42 (see. Fig. 2 ) project along the pivot axis S over the respective side surface of the housing 12.
  • the motor housing 58 of the electric motor is fastened to a rear side of the housing 12 by means of five fastening means 54d to 54h in a carrier part of the housing 12 assigned to the receiving device 16.
  • the electric motor as actuator of the control part 26 also on the in Fig. 3 shown front side of the housing 12 may be arranged.
  • the operating element 48 projects in the form of a gripping button on the front side of the housing 12.
  • Fig. 4a and 4d show that the housing 12 of the lifting device 10 at the top and the one lifting arm 14a associated side is formed closed.
  • the side of the housing 12 formed open at least in the arranged between the fastening means 54a, 54j load receiving part. Via an associated opening 60 on the side of the housing 12, the other latching lug 32 b of the latching part 24 can be brought out of the housing 12.
  • the housing 12 of the lifting device 10 is at least partially open at the bottom trained and thus provides access to the load receiving space 18 (see. Fig. 3 ).
  • FIGS. 5 and 6 Perspective oblique views of FIGS. 5 and 6 the back and the front of the lifting device 10, in particular the formation of the two abutments 30a, 30b and the other lifting arm 14b as a pivoting space for the locking part 24 can be removed.
  • An abutment 30a on a lifting arm 14a is wedge-shaped and adjoins the recess 34.
  • the other abutment 30b is formed as a cylindrical web between the fastening means 54a on the other lifting arm 14b.
  • the fastening means 54b comprises a likewise cylindrical web between both sides of the housing 12 on the other lifting arm 14b.
  • the components of the lifting device 10 are typically formed of a metal material, such as steel.
  • the battery-operated electric motor may be accommodated in a motor housing 58, preferably made of metal.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Invalid Beds And Related Equipment (AREA)

Claims (14)

  1. Dispositif de levage pour lever, transporter et abaisser des charges, comprenant une enveloppe (12), qui a deux bras (14a, 14b) de levage, qui délimitent entre eux un espace (18) de réception de charge ouvert au moins d'un côté et qui ont chacun une butée (30a, 30b), sur laquelle s'appuie une partie (24) d'encliquetage dans sa position encliquetée avec la butée (30a, 30b) respective, tandis que, dans sa position désencliquetée, elle est guidée avec possibilité de se déplacer (R1, R2) en rotation autour d'un axe (S) de pivotement, au moyen d'un dispositif (48) d'actionnement, la partie (24) d'encliquetage étant pourvue d'une partie (26) de commande, qui, dans son état actionné ou non actionné, donne à la partie (24) d'encliquetage un déplacement (T1, T2) en translation transversalement à l'axe (S) de pivotement, en étant hors d'encliquetage ou en encliquetage avec la butée (30a, 30b) respective, caractérisé en ce que la partie (24) d'encliquetage a, à son extrémité libre, un bec (32) d'encliquetage, qui, dans l'état encliqueté dans la butée (30a) cunéiforme, pénètre dans un bras (14a) de levage et en ce qu'à l'extrémité, opposée à l'extrémité libre, de la partie (24) d'encliquetage, est constitué un autre bec (32b) d'encliquetage, qui, à l'état encliqueté, est en contact avec la butée (30b) de l'autre bras (14b) de levage, laquelle est cylindrique ou cunéiforme.
  2. Dispositif de levage suivant la revendication 1, caractérisé en ce que la partie (24) d'encliquetage et la partie (26) de commande sont reliées entre elles par une partie (28) d'entretoise, de manière à ce qu'au moins dans la position encliquetée de la partie (24) d'encliquetage un espace (22) de réception d'un moyen de réception de charge soit formé sous la forme d'un espace partiel de l'espace (18) de réception de charge.
  3. Dispositif de levage suivant la revendication 2, caractérisé en ce que la partie (24) d'encliquetage, la partie (26) de commande et la partie (28) d'entretoise les unes sur les autres verticalement constituent une pièce (20) avec l'espace (22) de réception.
  4. Dispositif de levage suivant l'une des revendications précédentes, caractérisé en ce que l'espace (18) de réception de charge délimité par les bras (14a, 14b) de levage a une forme de section transversale sensiblement rectangulaire.
  5. Dispositif de levage suivant l'une des revendications précédentes, caractérisé en ce que la partie (24) d'encliquetage, constituée de préférence de type en poutrelle ou en barrette, peut, dans la partie de l'extrémité libre du bras (14a, 14b) de levage respectif, être mise en même temps en contact avec la butée (30a, 30b) respective.
  6. Dispositif de levage suivant l'une des revendications précédentes, caractérisé en ce que les butées (30a, 30b) sont disposées dans un plan commun orienté de préférence perpendiculairement au déplacement (T1, T2) en translation de la partie (24) d'encliquetage et sont constituées de manière à correspondre dans leur forme à la partie (24) d'encliquetage.
  7. Dispositif de levage suivant l'une des revendications précédentes, caractérisé en ce qu'il est prévu un dispositif (36) de rappel, attaquant de préférence la partie (26) de commande, ayant de préférence un élément à ressort comme un ressort (44) de compression, dispositif qui, par un mouvement (T2) de rappel en translation de la partie (24) d'encliquetage, la fait passer de la position encliquetée à la position désencliquetée.
  8. Dispositif de levage suivant l'une des revendications précédentes, caractérisé en ce que, dans la partie de l'extrémité, du côté de l'enveloppe et loin du côté ouvert, de l'espace (18) de réception de charge, est prévu l'axe (S) de pivotement pour le mouvement (R1, R2) de rotation et en ce que, notamment, la partie (26) de commande est montée sur l'axe (S) de pivotement et peut être mise en mouvement par le dispositif (48) d'actionnement.
  9. Dispositif de levage suivant l'une des revendications précédentes, caractérisé en ce que le dispositif (36) de rappel est disposé dans la partie de l'axe (S) de pivotement montée de préférence au milieu sur la partie (26) de commande, de manière à ce que le sens de rappel soit modifié en fonction de la position de pivotement de la partie (26) de commande et qu'un rappel (72) en translation de la partie (24) d'encliquetage ne soit provoqué que si la partie (26) de commande est mise en position correcte.
  10. Dispositif de levage suivant l'une des revendications précédentes, caractérisé en ce que le dispositif d'actionnement attaquant de préférence la partie (26) de commande de la partie (26) d'encliquetage comprend un élément (48) de manoeuvre pour un actionnement manuel et/ou un moteur, de préférence un moteur électrique fonctionnant sur batterie, afin d'avoir un actionnement automatique.
  11. Dispositif de levage suivant l'une des revendications précédentes, caractérisé en ce qu'il est prévu un autre dispositif (50) de rappel attaquant de préférence la partie (26) de commande, comprenant de préférence un élément à l'élasticité de ressort, dispositif (50) de rappel qui provoque un mouvement (R2) de rappel en rotation de la partie (24) d'encliquetage, la ramenant d'une position dégageant l'accès à l'espace (18) de réception de charge à une position fermant l'espace (18) de réception de charge.
  12. Dispositif de levage suivant la revendication 11, caractérisé en ce que l'autre dispositif (50) de rappel est disposé à l'extérieur de la partie de l'axe (S) de pivotement montée de préférence au milieu sur la partie (26) de commande, de manière à provoquer une position (R2) de rappel en rotation de la partie (24) d'encliquetage indépendamment de la position de pivotement de la partie (26) de commande.
  13. Dispositif de levage suivant l'une des revendications précédentes, caractérisé en ce qu'à une partie de réception de charge ayant les bras (14a, 14b) de levage, de l'enveloppe (12) se raccorde une partie d'actionnement, ayant le dispositif (48) d'actionnement et la partie (26) de commande, et une partie de support et en ce que, notamment, la partie de support comprend un dispositif (16) de réception du dispositif (10) de levage.
  14. Dispositif de levage suivant l'une des revendications précédentes, caractérisé en ce que le moteur du dispositif d'actionnement est monté sur la partie de support de l'enveloppe (12), en étant de préférence fixé à sa face extérieure.
EP18162325.7A 2017-03-21 2018-03-16 Dispositif de levage Active EP3378822B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017002812.5A DE102017002812A1 (de) 2017-03-21 2017-03-21 Hebevorrichtung

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EP3378822A1 EP3378822A1 (fr) 2018-09-26
EP3378822B1 true EP3378822B1 (fr) 2019-10-09

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DE (1) DE102017002812A1 (fr)

Cited By (1)

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RU2756450C1 (ru) * 2020-12-28 2021-09-30 федеральное государственное бюджетное образовательное учреждение высшего образования "Тольяттинский государственный университет" Устройство для автоматического захвата и транспортировки длинномерных осесимметричных деталей

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US3428355A (en) * 1967-12-26 1969-02-18 Alexander Hamilton Safety hoisting hook
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