RU2007362C1 - Hoisting device - Google Patents

Abstract

FIELD: hoist equipment. SUBSTANCE: in working position magnets operate as a single piece, that is, with simultaneous use of their total power. The magnets are disengaged with the article in series one after another due to usage of perforated band with a pusher. This allows a small power reversible motor sufficient for disengagement of one magnet with the article to be used. EFFECT: improved lifting power. 5 dwg

Description

 The hoisting device is the working body of the hoisting crane and can be used in any sector of the national economy to move steel and cast iron billets, products from these materials.

 Known lifting device containing fixed and movable permanent magnets.

 The disadvantage of this device is the limited carrying capacity of up to 1500 kg, incompletely blocked working magnetic flux, design complexity, manual switching on and off of magnets.

 The aim of the development of the proposed device is to increase its load capacity to the necessary and ensure full and remote on and off permanent magnets.

 This is achieved by the fact that the device uses only movable magnets and a perforated tape made of diamagnetic material with a window, moved by gear coils driven by a reversible electric motor. At the same time, all magnets are involved in the work at the same time, and they are switched off sequentially one after another.

 The device is shown in FIG. 1 (in operating position) and FIG. 2 and comprises a housing 1 with a base of diamagnetic material with two inserts of ferromagnetic material (Fig. 5) 2, permanent magnets 3, spacers between them and rigidly fixed with them from diamagnetic material 4 and installed in the housing of diamagnetic material 5, a reversible motor with a reducer 6, two gear coils 7 mounted on shafts 8, a perforated tape 9 made of diamagnetic material with a window and a pusher 10 (additionally FIG. 4), limit switches 11, a latch 12, an earring 13. In FIG. 1 shows part 14.

 The device operates as follows.

 The housing 1 is suspended on a crane hook, a cable (in Fig. 1 and 2 not shown) is connected to the wiring in the crane cabin. After that, the device lowers to the transported load 14, the electric motor 6 is turned on and the perforated tape 9 moves to the right until its window is under the magnets 3 and the lock 12 disconnects the end 11. Magnets 3 are lowered one after the other through the window of the tape 9 onto the inserts of the base 1 . In this case, the magnetic flux of all magnets through the liners is closed to the part 14.

 To release the load 14 after its movement, the electric motor 6 is turned on, the perforated tape 9, moving to the left, pusher 10 successively lifts the magnets 3, which are lowered onto the tape, the latch 12 disables the end 11 and the magnetic flux is blocked by the tape 9.

 The load capacity of the device depends on the number and total power of the permanent magnets used, and the load capacity can be performed both by 1 t and 100 t using the most powerful magnets, for example, the KhK-15 brand connected at the Metallurgy Institute Baykova.

 Since to detach the magnets, an electric motor is required to ensure the detachment of one magnet, a small power engine powered by a working crane can be used in the device, which ensures autonomy in operation.

 Thus, the proposed device in comparison with existing ones creates a certain positive effect by increasing the load capacity to the necessary, remote control of the process from the crane cabin. (56) Copyright certificate of the USSR N 821379, cl. B 66 C 1/04, 1975.

Claims (1)

 LIFTING DEVICE, comprising a housing, permanent magnets located therein with a possibility of movement, a moving mechanism including shafts with gear elements, characterized in that it is provided with an additional housing of diamagnetic material, a perforated tape of diamagnetic material with a clamp pusher, limit switches , the movement mechanism is equipped with a reversible motor with a gearbox, the bottom of the body is made of diamagnetic material with inserts of ferromagnetic material, as e gear elements, gear coils are used, said gear coils are mounted on shafts, a reversible motor with a gear is mounted on one of the shafts, said perforated tape is made with a window and is located on gear coils with the ability to move along the longitudinal axis of the housing, limit switches are placed inside the housing with the possibility interactions with the perforated tape clamp, the additional housing is made with grooves, these permanent magnets are equipped with diamagnetic spacers and wife in grooves additional housing for vertical movement, the pusher is mounted on a perforated belt to sequentially interact with the permanent magnets.

Images