CN212953882U - Lifting appliance - Google Patents

Abstract

The utility model relates to a lifting appliance in the technical field of lifting devices, which comprises a universal lifting lug and a clamping cover, interior tong arm, outer tong arm and open and close the ware, open and close the ware and connect the bottom at universal lug, universal lug both sides articulate respectively has two connecting rod A and two connecting rod B, interior tong arm upper portion inboard is equipped with the joint piece matched with draw-in groove with opening and close the ware, two connecting rod A's bottom is articulated mutually with the top of interior tong arm, two connecting rod B's bottom is articulated mutually with the top of outer tong arm, the card cover includes square hopper form guide housing, both sides are connected with a hanger plate respectively around the square hopper form guide housing top, one side of two hanger plates is articulated mutually with the triangle bellying at outer tong arm middle part, the opposite side is articulated mutually with the triangle bellying at inner tong arm middle part, the inboard of two hanger plates that plays is connected with the limiting plate, outer tong arm bottom is connected with tong A through pivot A, interior tong arm bottom is connected with tong B through pivot B. The device can realize automatic release, and has high operation efficiency and safety and low auxiliary operation intensity.

Description

Lifting appliance

Technical Field

The utility model belongs to the technical field of hoist device, specifically, relate to a hoist.

Background

The lifting appliance is a device for lifting a heavy object in a lifting machine. The most common lifting devices for lifting finished articles are lifting hooks, lifting straps, lifting rings, lifting suction cups, clamps, forks and the like. Is widely applied to the hoisting industry. For example, need clear up the aluminium oxide anode scrap when electrolytic aluminum workshop production, need use the hoist to carry out rapid draing and place among the clearance process, current hoist needs artifical auxiliary operation to connect aluminium oxide anode scrap davit portion, and operational safety is poor, and can't realize the quick centre gripping of aluminium oxide anode scrap or place, influences the operating efficiency.

Therefore, there is a need for a new lifting tool to automatically release a lifted object, thereby improving the lifting efficiency, reducing the intensity of auxiliary work of an operator, and improving the safety of field work.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a lifting appliance, which comprises a universal lifting lug, a clamping cover, an inner tong arm, an outer tong arm and a start-stop device, wherein the start-stop device is connected with the bottom of the universal lifting lug, a pin shaft A is arranged on the universal lifting lug in a penetrating way, a double-connecting rod A and a double-connecting rod B are hinged on the pin shaft A, the double-connecting rod A and the double-connecting rod B are respectively arranged at two sides of the universal lifting lug, the inner tong arm comprises an inner tong arm A and an inner tong arm B which are arranged in parallel, a clamping groove matched with a clamping block of the start-stop device is arranged between the upper parts of the inner tong arm A and the inner tong arm B, the outer tong arm comprises an outer tong arm A and an outer tong arm B which are arranged in parallel, triangular protrusions are correspondingly arranged at the middle parts of the inner tong arm A, the inner tong arm B, the outer tong arm A and the outer tong arm B, the bottom of the double-connecting rod A is hinged with the, the bottom of the double-connecting rod B is hinged with the top ends of the outer tong arm A and the outer tong arm B through a pin shaft C, the clamping cover comprises guide plates, lifting plates and a square-bucket-shaped guide cover, the left side and the right side of the top of the square-bucket-shaped guide cover are respectively connected with one guide plate, the front side and the rear side of the top of the square-bucket-shaped guide cover are respectively connected with one lifting plate, one side of each lifting plate is hinged with a triangular bulge on the outer tong arm A and the outer tong arm B through a pin shaft D, the other side of each lifting plate is hinged with a triangular bulge on the inner tong arm A and the inner tong arm B through a pin shaft E, the inner sides of the two lifting plates are horizontally connected with limiting plates, the bottoms of the outer tong arm A and the outer tong arm B are connected with a tong arm A through a rotating shaft A, the bottoms of the inner tong arm A and the inner tong arm B are connected with a tong arm B through a rotating shaft B, guide grooves matched with the guide, and two sides of the middle part of the lifting plate are respectively provided with a yielding groove matched with the jaw A and the jaw B.

Preferably, the on-off device includes shell, pin and rotor, the rotor upper end is equipped with the groove of turning round that can lead to the rotor and make 90 degrees rotations in the shell along circumference, the shell bilateral symmetry is equipped with the pin, the pin passes the shell and turns round groove sliding connection, the rotor passes through the boss and supports in the shell, and the bottom of rotor passes the shell and is connected with the joint piece, joint piece and draw-in groove phase-match make when opening and close the ware and break away from with the draw-in groove mutually, joint piece and draw-in groove looks joint when opening and close the ware. After the clamping block of the opening and closing device falls once and contacts with the bottom plate of the clamping groove, the 90-degree steering can be completed once under the guiding action of the pin and the torsion groove, so that the automatic releasing operation of the inner tong arm and the outer tong arm to a lifted object is realized, the lifting operation efficiency is improved, the auxiliary operation intensity of operators is reduced, and the safety of field operation is improved.

Preferably, the universal lifting lug comprises a lifting seat, a universal lower lug seat and a universal upper lug seat, the universal lower lug seat is connected below the universal upper lug seat through a cross shaft frame, and the lifting seat is rotatably connected below the universal lower lug seat. Therefore, the universal adjustment of the lifting appliance is realized, and the flexible application on the site is facilitated.

Preferably, the lower opening of the square bucket-shaped guide cover is large, the upper opening of the square bucket-shaped guide cover is small, and the shape and the size of the inner cavity of the square bucket-shaped guide cover are matched with the shape and the size of a lifting object suspender, so that the lifting object suspender is basically aligned with the lifting appliance concentrically under the action of the square bucket-shaped guide cover, and the clamping stability of the lifting object is ensured.

Preferably, the shape and the size of the jaw A and the jaw B are matched with those of the lifting object suspender, so that the clamping stability of the lifting object suspender is ensured.

The utility model discloses still including other devices or the subassembly that can make this hoist normal use, be the conventional technical means in this field, in addition, the utility model discloses in add the device or the subassembly that restrict and all adopt the conventional technical means in this field.

The utility model discloses a theory of operation: when the lifting appliance is used, the lifting appliance is connected with a lifting hook of a crane through a universal lifting lug, the lifting appliance is controlled to ascend and descend through a crane control handle, when the lifting appliance is sleeved on a hanging rod of a lifted object through a square bucket-shaped guide cover and the top of the hanging rod is propped against a limiting plate, an inner clamp arm and an outer clamp arm are opened towards two sides under the action of gravity, a clamp block of an opening and closing device descends under the action of gravity, the clamp block extends into a clamp groove and rotates when being supported by a bottom plate of the clamp groove, the clamp block of the opening and closing device is clamped with the clamp groove, then the crane is started to enable the lifting appliance to slowly ascend, the inner clamp arm and the outer clamp arm are driven to clamp in the process that the clamp groove is lifted upwards by the opening and closing device, the clamp arms A and the clamp arms are clamped inwards along the guide plate, rotating shafts on the clamp jaw A and the clamp arm B are hooked into hook grooves of the guide plate, and a yielding groove on the lifting board gives, thereby realize the chucking to the thing jib of lifting by crane, when putting down the thing of lifting by crane, the operation crane makes the hoist slowly put down, when the hoist was supported by the thing of lifting by crane, keep silent A and keep silent B open to both sides, the joint piece of opening and close the ware realizes once more in the draw-in groove internal rotation breaking away from with the draw-in groove, avoids keeping silent A and keep silent B tight once more to realize the hoist and lift by crane breaking away from of thing.

The utility model has the advantages that: the device realizes automatic releasing operation of the inner tong arm and the outer tong arm on a lifted object through the opening and closing device, is favorable for improving the lifting operation efficiency, reduces the auxiliary operation intensity of operators, and improves the safety of field operation.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of a partial structure of the present invention.

Fig. 3 is a schematic view of the card cover structure of the present invention.

Fig. 4 is a schematic structural view of the opening and closing device of the present invention.

Fig. 5 is a schematic view of the rotor structure of the hoist of the present invention.

Detailed Description

The present invention will be described more clearly with reference to the accompanying drawings and specific embodiments in the embodiments of the present invention, and the description herein is only for explaining the present invention, but not for limiting the present invention. Based on the embodiments of the present invention, any modifications, equivalent replacements, improvements, etc. made by other embodiments obtained by those skilled in the art without creative efforts should be included in the protection scope of the present invention.

Example 1

As shown in fig. 1 to 5, the utility model provides a lifting appliance, which comprises a universal lifting lug 1, a clamping cover 2, an inner tong arm 3, an outer tong arm 4 and an opening and closing device 5, wherein the opening and closing device 5 is connected to the bottom of the universal lifting lug 1, a pin shaft a is arranged on the universal lifting lug 1 in a penetrating way, a double connecting rod A6 and a double connecting rod B7 are hinged on the pin shaft a, a double connecting rod A6 and a double connecting rod B7 are respectively arranged on both sides of the universal lifting lug 1, the inner tong arm 3 comprises an inner tong arm A3-1 and an inner tong arm B3-2 which are arranged in parallel, a clamping groove 3-3 matched with a clamping block 5-1 of the opening and closing device 5 is arranged between the upper parts of the inner tong arm A3-1 and the inner tong arm B3-2, the outer tong arm 4 comprises an outer tong arm A4-1 and an outer tong arm B4-2 which are arranged in parallel, the middle parts of the inner tong arm A3-1, the inner tong arm B3-2, the outer tong arm B4-1 and the triangular arms 4 are all provided with, the bottom of the double connecting rod A6 is hinged with the top ends of an inner tong arm A3-1 and an inner tong arm B3-2 through a pin shaft B, the bottom of the double connecting rod B7 is hinged with the top ends of an outer tong arm A4-1 and an outer tong arm B4-2 through a pin shaft C, the card cover 2 comprises a guide plate 2-1, a hoisting plate 2-2 and a square bucket-shaped guide cover 2-3, the left side and the right side of the top of the square bucket-shaped guide cover 2-3 are respectively connected with one guide plate 2-1, the front side and the rear side are respectively connected with one hoisting plate 2-2, one side of each hoisting plate 2-2 is hinged with a triangular bulge on the outer tong arm A4-1 and the outer tong arm B4-2 through a pin shaft D, the other side is hinged with triangular bulges on the inner tong arm A3-1 and the inner tong arm B3-2 through a pin shaft E, and the inner side of each hoisting plate 2-2 is horizontally connected with a limit plate 2, the bottom of the outer forceps arm A4-1 and the bottom of the outer forceps arm B4-2 are connected with a jaw A through a rotating shaft A, the bottom of the inner forceps arm A3-1 and the bottom of the inner forceps arm B3-2 are connected with a jaw B8 through a rotating shaft B9, guide grooves 8-1 matched with the guide plates 2-1 are formed in the middle of the jaw A and the jaw B8, hook grooves 2-5 matched with the rotating shaft B9 are formed in the middle of the guide plates 2-1, and yielding grooves 2-6 matched with the jaw A and the jaw B8 are formed in two sides of the middle of the lifting plate 2-2 respectively.

The open-close device 5 comprises a shell 5-2, a pin 5-3 and a rotor 5-4, the upper end of the rotor 5-4 is provided with a twisting groove 5-5 which can guide the rotor 5-4 to rotate 90 degrees in the shell 5-2 along the circumferential direction, pins 5-3 are symmetrically arranged on two sides of the outer shell 5-2, the pins 5-3 penetrate through the outer shell 5-2 and are in sliding connection with the torsion grooves 5-5, the rotor 5-4 is supported in the housing 5-2 by bosses 5-6, and the bottom of the rotor 5-4 passes through the shell 5-2 to be connected with the clamping block 5-1, the clamping block 5-1 is matched with the clamping groove 3-3, so that the clamping block 5-1 is separated from the clamping groove 3-3 when the opener 5 is opened, and the clamping block 5-1 is clamped with the clamping groove 3-3 when the opener is closed. After the clamping block 5-1 of the opening and closing device 5 falls once and contacts with the bottom plate of the clamping groove 3-3, the 90-degree steering can be completed once through the guiding action of the pin 5-3 and the twisting groove 5-5, so that the automatic releasing operation of the inner clamp arm 3 and the outer clamp arm 4 on a lifted object is realized, the lifting operation efficiency is improved, the auxiliary operation intensity of operators is reduced, and the safety of field operation is improved. The universal lifting lug 1 comprises a lifting seat 1-1, a universal lower lug seat 1-2 and a universal upper lug seat 1-3, the universal lower lug seat 1-2 is connected below the universal upper lug seat 1-3 through a cross shaft frame 1-4, and the lifting seat 1-1 is rotatably connected below the universal lower lug seat 1-2. Therefore, the universal adjustment of the lifting appliance is realized, and the flexible application on the site is facilitated. The lower opening of the square bucket-shaped guide cover 2-3 is large, the upper opening of the square bucket-shaped guide cover 2-3 is small, and the shape and the size of the inner cavity of the square bucket-shaped guide cover 2-3 are matched with the shape and the size of a suspender of a lifted object, so that the suspender of the lifted object is basically aligned with the lifting appliance concentrically under the action of the square bucket-shaped guide cover 2-3, and the stability of clamping the suspender is ensured. The shape and the size of the jaw A and the jaw B8 are matched with those of the lifting object suspender, so that the clamping stability of the lifting object suspender is ensured.

The utility model discloses a theory of operation: when the lifting appliance is used, the lifting appliance is connected with a lifting hook of a crane through the universal lifting lug 1, the lifting appliance is controlled to ascend and descend through a crane control handle, when the lifting appliance is sleeved on a suspension rod of a lifted object through the square bucket-shaped guide cover 2-3 and the top of the suspension rod is propped against the limiting plate 2-4, the jaw A and the jaw B8 are opened towards two sides by the inner jaw 3 and the outer jaw 4 under the action of gravity, the clamping block 5-1 of the opener 5 descends under the action of gravity, when the clamping block 5-1 penetrates into the clamping groove 3-3 and is supported by a bottom plate of the clamping groove 3-3, the clamping block 5-1 of the opener 5 is clamped with the clamping groove 3-3, then the crane is started to slowly ascend, the inner jaw 3 and the outer jaw 4 are driven to clamp, the jaw A and the jaw B8 clamp inwards along the guide plate 2-1, the rotating shafts B9 on the jaw A and the jaw B8 are hooked into hook grooves 2-5 of the guide plate 2-1, the yielding grooves 2-6 on the lifting plate 2-2 give clamping spaces for the jaw A and the jaw B8, so that a lifting object hanger rod is clamped, when a lifting object is put down, a crane is operated to slowly put down a lifting appliance, when the lifting appliance is supported by the lifting object, the jaw A and the jaw B8 are opened towards two sides, the clamping block 5-1 of the opening and closing device 5 rotates in the clamping groove 3-3 again to realize separation from the clamping groove 3-3, the jaw A and the jaw B8 are prevented from clamping again, and therefore separation of the lifting appliance and the lifting object is realized.

The foregoing description of the embodiments of the invention has been presented for purposes of illustration and not limitation, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the illustrated embodiments.

Claims (5)

1. A lifting appliance is characterized in that: the clamp comprises a universal lifting lug, a clamp cover, an inner clamp arm, an outer clamp arm and an opening and closing device, wherein the opening and closing device is connected to the bottom of the universal lifting lug, a pin shaft A is arranged on the universal lifting lug in a penetrating mode, a double connecting rod A and a double connecting rod B are hinged to the pin shaft A, the double connecting rod A and the double connecting rod B are respectively arranged on two sides of the universal lifting lug, the inner clamp arm comprises an inner clamp arm A and an inner clamp arm B which are arranged in parallel, a clamping groove matched with a clamping block of the opening and closing device is arranged between the upper portions of the inner clamp arm A and the inner clamp arm B, the outer clamp arm comprises an outer clamp arm A and an outer clamp arm B which are arranged in parallel, triangular protrusions are correspondingly arranged in the middle portions of the inner clamp arm A, the inner clamp arm B, the bottom of the double connecting rod A is hinged to the top ends of the inner clamp arm A and the inner clamp arm B through the pin shaft B, and the bottom of the double connecting rod B is hinged to the top ends of the outer clamp arm A, the clamping cover comprises guide plates, lifting plates and a square bucket-shaped guide cover, the left side and the right side of the top of the square bucket-shaped guide cover are respectively connected with one guide plate, the front side and the rear side of the top of the square bucket-shaped guide cover are respectively connected with one lifting plate, one side of each lifting plate is hinged with the triangular bulges on the outer tong arm A and the outer tong arm B through a pin shaft D, the other side of each lifting plate is hinged with the triangular bulges on the inner tong arm A and the inner tong arm B through a pin shaft E, and the inner sides of the two lifting plates are horizontally connected with a limiting plate, the bottoms of the outer tong arm A and the outer tong arm B are connected with a jaw A through a rotating shaft A, the bottoms of the inner forceps arm A and the inner forceps arm B are connected with a jaw B through a rotating shaft B, the middle parts of the jaw A and the jaw B are respectively provided with a guide groove matched with the guide plate, the middle part of deflector is equipped with and rotates shaft assorted hook groove, the both sides at lifting plate middle part are equipped with respectively and keep away the groove with keeping silent A and keeping silent B assorted.

2. The spreader of claim 1, wherein: open and close the ware and include shell, pin and rotor, the rotor upper end is equipped with the guidable groove of turning round that 90 degrees rotations were made in the shell to the rotor along circumference, the shell bilateral symmetry is equipped with the pin, the pin passes the shell and turns round groove sliding connection, the rotor passes through the boss and supports in the shell, and the bottom of rotor passes the shell and is connected with the joint piece, joint piece and draw-in groove phase-match make when opening and close the ware and open joint piece and draw-in groove phase-breaking away from mutually, when opening and close the ware closed joint piece and draw-in groove phase joint.

3. The spreader of claim 1, wherein: the universal lifting lug comprises a lifting seat, a universal lower lug seat and a universal upper lug seat, the universal lower lug seat is connected below the universal upper lug seat through a cross shaft frame, and the lifting seat is rotatably connected below the universal lower lug seat.

4. The spreader according to any one of claims 1 to 3, wherein: the square bucket-shaped guide cover is large at the lower opening and small at the upper opening, and the shape and the size of the inner cavity of the square bucket-shaped guide cover are matched with the shape and the size of the hoisting rod of the hoisted object.

5. The spreader of claim 4, wherein: the shape and the size of the jaw A and the jaw B are matched with those of the lifting object suspender.

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