CN117023354A - Lifting point spacing adjustable unhooking lifting appliance and unhooking method thereof - Google Patents

Abstract

The invention discloses a unhooking lifting appliance with adjustable lifting point spacing and a unhooking method thereof, wherein the unhooking lifting appliance is used for lifting a slag ladle under the drive of a crane and comprises a lifting beam, two lifting hooks and a driving mechanism, the lifting beam comprises a supporting beam and two sliding blocks, the supporting beam is provided with a guide rail extending along the horizontal direction, the two sliding blocks are both in sliding connection with the guide rail, the lifting hooks comprise a first plate hook and a second plate hook which are opposite, the first plate hook and the second plate hook can rotate around a hinge shaft to open or close a hook cavity, the driving mechanism is arranged on the lifting beam, and the driving mechanism acts on the two lifting hooks and drives the two lifting hooks to move along the guide rail in opposite directions so as to separate the lifting hooks from lifting lugs of the crane. The lifting appliance is simple in structure, convenient to operate, high in universality and wide in application range, and automatic unhooking operation is fast and convenient, so that the lifting work efficiency is improved, and the safety risk is reduced.

Description

Lifting point spacing adjustable unhooking lifting appliance and unhooking method thereof

Technical Field

The invention relates to the technical field of lifting appliances, in particular to an unhooking lifting appliance with adjustable lifting point spacing and a unhooking method thereof.

Background

There are two kinds of hangers commonly used for lifting slag bags by a crane in the related art: a conventional fixed lifting appliance consists of a lifting hook hanging beam with fixed hanging point intervals and a conventional hook, wherein the hanging point intervals of the lifting appliance are not adjustable, and the automatic unhooking operation is inconvenient, so that the same lifting appliance has no universality for lifting slag bags of different types; the other is a lifting appliance with adjustable lifting point spacing, which consists of a lifting hook hanging beam with adjustable lifting point spacing and a conventional hook, wherein the lifting point spacing of the lifting appliance is adjustable, but the automatic unhooking operation is inconvenient, the success rate is low, and multiple adjustment operations or manual auxiliary operations are needed, so that the problems of low working efficiency, high labor intensity, high potential safety hazard and the like are caused.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the invention provides an unhooking hanger with adjustable hanging point spacing and a unhooking method thereof.

The lifting point interval adjustable unhooking lifting appliance provided by the embodiment of the invention is used for lifting a slag ladle under the drive of a crane, the slag ladle is provided with a lifting lug which is horizontally arranged, the lifting lug comprises a first lifting lug and a second lifting lug which are opposite in extending direction, and the unhooking lifting appliance comprises: the lifting beam comprises a supporting beam and two sliding blocks, a guide rail extending along the horizontal direction is arranged on the supporting beam, and the two sliding blocks are both in sliding connection with the guide rail; the two lifting hooks are respectively hinged with the two sliding blocks through hinge shafts and are respectively used for hanging the first lifting lug and the second lifting lug, the lifting hooks comprise a first plate hook and a second plate hook which are opposite, a hook cavity is formed between the first plate hook and the second plate hook, the first plate hook and the second plate hook can rotate around the hinge shafts to open or close the hook cavity, the bottom end surfaces of the first plate hook and the second plate hook are inclined surfaces, so that when the lifting hooks operate downwards, the inclined surfaces slide relative to the lifting lugs to open the hook cavity, and in a natural state, the hook cavity is closed, so that after the lifting lugs enter the hook cavity, the first plate hook and the second plate hook are retracted to close the hook cavity; the driving mechanism is arranged on the hanging beam, acts on two lifting hooks and drives the two lifting hooks to move along the guide rail in opposite directions so as to separate the lifting hooks from the hanging lifting lugs.

The unhooking lifting appliance provided by the embodiment of the invention has the function of adjustable distance between lifting points, is simple in structure, convenient to operate, strong in universality, wide in application range, and quick and convenient in automatic unhooking operation, improves the lifting work efficiency, and reduces the safety risk. The lifting hook is simple in structure and ingenious in design, the lifting hook is composed of two plate hooks, the two plate hooks can be freely opened and folded around the hinge shaft, automatic unhooking operation is fast and convenient, hooking and unhooking are not needed to be carried out manually, and manual workload is reduced.

In some embodiments, the hanging beam comprises a plurality of movable pulley assemblies, and the movable pulley assemblies are arranged at the top of the supporting beam at intervals and used for being connected with a crane.

In some embodiments, the width of the upper portion of the hook cavity is greater than the width of the lower portion thereof in a natural state, the width of the upper portion of the hook cavity is greater than the width of the lifting lug, and the width of the lower portion of the hook cavity is less than or equal to the width of the lifting lug.

In some embodiments, the first and second lifting lugs are provided on opposite outer sides of the ladle and extend outwardly respectively, and the drive mechanism is adapted to drive the two lifting hooks away from each other to disengage the lifting hooks from the suspended lifting lugs.

In some embodiments, the driving mechanism is further configured to drive the two hooks to move along the guide rail so that the distance between the two hooks is a preset distance.

In some embodiments, the driving mechanism is an electric push rod, and the electric push rod is arranged between the two lifting hooks and used for pushing or pulling the two lifting hooks in the horizontal direction.

In some embodiments, the electric push rod comprises a first electric push rod and a second electric push rod, one end of the first electric push rod is mutually fixed with the hanging beam, the other end of the first electric push rod is connected with one of the sliding blocks, one end of the second electric push rod is mutually fixed with the hanging beam, and the other end of the second electric push rod is connected with the other sliding block.

In some embodiments, a portion of the first and second power pushers are disposed inside the support beam.

In another aspect, the unhooking method of the unhooking hanger provided by the embodiment of the invention includes:

and a hooking step: the distance between the two lifting hooks is adjusted, the lifting crane moves the unhooking lifting appliance to the position above the slag ladle, the unhooking lifting appliance is operated to move downwards, the first lifting lug and the second lifting lug are utilized to open the hook cavities of the two lifting hooks and respectively enter the corresponding hook cavities, the lifting hook utilizes self gravity to automatically close the hook cavities, and the unhooking lifting appliance is operated to move to the position where the two lifting hooks are used to completely lock the first lifting lug and the second lifting lug, so that a hanging state is formed;

a lifting step; the crane utilizes the unhooking hanger to run the slag ladle to a specified placement position;

unhooking: and operating the unhooking hanger to downwards run, and driving the two lifting hooks to move along the guide rail in opposite directions by the driving mechanism so as to separate the two lifting hooks from the first lifting lug and the second lifting lug respectively.

In some embodiments, the unhooking method further comprises:

resetting: after the unhooking hanger is operated to be lifted to a safe height, the driving mechanism drives the two lifting hooks to return to the original positions, so that the distance between the two lifting hooks is a preset distance;

and carrying the unhooking lifting appliance by the crane to carry out next round of operation.

Drawings

Fig. 1 is a front view of an unhooking hanger with adjustable hanging point spacing according to an embodiment of the present invention.

Fig. 2 is a side view of an unhooking hanger with adjustable hanging point spacing according to an embodiment of the present invention.

Fig. 3 is a front view of a hanging beam provided by an embodiment of the present invention.

Fig. 4 is a side view of a hanging beam provided by an embodiment of the present invention.

Fig. 5 is a schematic diagram (first lifting lug side) of a hooking process of an unhooking hanger with an adjustable lifting point spacing according to an embodiment of the invention.

Fig. 6 is a schematic diagram (first lifting lug side) of an unhooking process of an unhooking hanger with an adjustable lifting point spacing according to an embodiment of the invention.

Reference numerals:

slag ladle 100, first lifting lug 110, second lifting lug 120, unhooking hanger 200, hanging beam 210, supporting beam 211, sliding block 212, guide rail 213, mounting seat 214, lifting hook 220, first plate hook 221, second plate hook 222, hook cavity 223, hinge shaft 230, movable pulley assembly 240, first electric push rod 250 and second electric push rod 260.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

The invention aims to provide a unhooking lifting appliance with adjustable lifting point spacing, which solves the problems of low working efficiency, high labor intensity, high potential safety hazard and the like caused by the fact that the lifting point spacing is not adjustable or inconvenient to adjust and the automatic unhooking operation is inconvenient when a lifting appliance is used for lifting slag bags in the prior art.

The following describes the unhooking hanger with adjustable hanging point spacing according to the embodiment of the invention according to fig. 1 to 6. The unhooking hanger is used for lifting the slag ladle 100 under the drive of the crane. The ladle 100 is provided with horizontally arranged lifting lugs, and each lifting lug comprises a first lifting lug 110 and a second lifting lug 120 which are opposite in extending direction. For example, as shown in fig. 6, a first lifting lug 110 extending outwardly in a first horizontal direction and a second lifting lug 120 extending outwardly in a second horizontal direction are provided on an outer side surface of the slag ladle 100, the first horizontal direction and the second horizontal direction being opposite. It will be appreciated that the end of the first shackle 110 remote from the slag ladle 100 is a free end and the end of the second shackle 120 remote from the slag ladle 100 is a free end.

The unhooking hanger acts on the first and second lifting lugs 110 and 120 to lift the ladle 100. As shown in fig. 1, the unhooking spreader 200 includes a hanging beam 210, two hooks 220, and a driving mechanism.

The hanging beam 210 comprises a supporting beam 211 and two sliding blocks 212, wherein a guide rail 213 extending along the horizontal direction is arranged on the supporting beam 211, and the two sliding blocks 212 are both in sliding connection with the guide rail 213.

The two hooks 220 are hinged with the two sliding blocks 212 through the hinge shaft 230 respectively, and the sliding blocks 212 slide along the guide rail 213 to drive the hooks 220 to move along the extending direction of the guide rail 213, so that the distance between the two hooks 220 is adjusted, namely the unhooking lifting appliance provided by the embodiment of the invention realizes adjustable lifting point distance. The two lifting hooks 220 are respectively used for hanging the first lifting lug 110 and the second lifting lug 120 on the slag ladle 110, and the distance between the two lifting hooks 220 can be adjusted according to the specification of the slag ladle 100, so that the two lifting hooks 220 can be better matched with the positions of the first lifting lug 110 and the second lifting lug 120 on the slag ladle 110, and then the slag ladle is lifted, and therefore the unhooked hanger provided by the embodiment of the invention has good suitability. The extending directions of the first and second lifting lugs 110 and 120 are reversed to make the two lifting hooks 220 more stable in the process of hanging the slag ladle 100.

As shown in fig. 2, the hook 220 includes opposite first and second plate hooks 221 and 222, each of the first and second plate hooks 221 and 222 having a hook portion, the hook portions of the first and second plate hooks 221 and 222 being opposite to each other to form a hook cavity 223 between the first and second plate hooks 221 and 222. The first plate hook 221 and the second plate hook 222 are both rotatable about the hinge shaft 230, that is, the first plate hook 221 and the second plate hook 222 are swingable, and the first plate hook 221 and the second plate hook 222 are swingable to open or close the hook chamber 223. Specifically, when the first plate hook 221 and the second plate hook 222 are rotated about the hinge shaft 230 to be away from each other, the hook cavity 223 is opened to allow the lifting lug to enter, and when the first plate hook 221 and the second plate hook 222 are rotated about the hinge shaft 230 to be close to each other, the hook cavity 223 is closed to lock the lifting lug located in the hook cavity 223.

As shown in fig. 2, the bottom end surfaces of the first plate hook 221 and the second plate hook 222 are inclined surfaces so that when the hook 220 is downwardly operated, the inclined surfaces slide with respect to the lifting lugs to open the hook cavities 223. As shown in fig. 5, during the course of the hook 220 abutting against the corresponding lifting lug and continuing to operate downward, the inclined bottom end surface of the first plate hook 221 and the inclined bottom end surface of the second plate hook 223 of the hook 220 are slid with respect to the lifting lug by the abutment of the lifting lug, the first plate hook 221 and the second plate hook 222 are rotated about the hinge shaft 230 to be away from each other, and the bottom of the hook cavity 223 is opened thereby to allow the lifting lug to enter the hook cavity 223.

As shown in fig. 5, the hook cavity 223 is closed in a natural state, that is, when the first plate hook 221 and the second plate hook 222 are not constrained by the lifting lug, the first plate hook 221 and the second plate hook 222 naturally droop and form the closed hook cavity 223, so that when the lifting lug enters the hook cavity 223 in the hanging process, the first plate hook 221 and the second plate hook 222 can be naturally folded under the action of self gravity to close the hook cavity 223, the lifting lug in the hook cavity 223 is locked, and the hanging process is completed.

The driving mechanism is provided on the hanging beam 210, and acts on the two hooks 220 and is used for driving the two hooks 220 to move in opposite directions along the guide rail 213 so as to separate the hooks 220 from the hanging lifting lugs, thereby completing the unhooking process. For example, as shown in fig. 6, after the slag ladle 110 is placed at a specified position, the hook 220 acting on the first lifting lug 110 is moved away from the first lifting lug 110 in the first horizontal direction until it is separated from the first lifting lug 110, and the hook 220 acting on the second lifting lug 120 is moved away from the second lifting lug 120 in the second horizontal direction until it is separated from the second lifting lug 120, under the drive of the drive mechanism.

The unhooking lifting appliance provided by the embodiment of the invention has the function of adjustable distance between lifting points, is simple in structure, convenient to operate, strong in universality, wide in application range, and quick and convenient in automatic unhooking operation, improves the lifting work efficiency, and reduces the safety risk. The lifting hook is simple in structure and ingenious in design, the lifting hook is composed of two plate hooks, the two plate hooks can be freely opened and folded around the hinge shaft, automatic unhooking operation is fast and convenient, hooking and unhooking are not needed to be carried out manually, and manual workload is reduced.

In some embodiments, the hanging beam 210 further includes a plurality of movable pulley assemblies 240, and a plurality of movable pulley assemblies 24 are spaced apart on top of the support beam 211 for connection to a crane hoisting mechanism. The lifting mechanism of the crane pulls the movable pulley assembly 240 through the wire rope to hoist the unhooking hanger 200.

In the embodiment shown in fig. 1-2, the support beam 211 is a cross beam extending in a horizontal direction, and the extending direction of the guide rail 213 is the same as the extending direction of the support beam 211. Two movable pulley assemblies 240 are arranged at intervals on the top of the supporting beam 211, so that the lifting process of the unhooking hanger 200 is more stable. The guide rail 213 and the slider 212 are both provided at the bottom of the support beam 211, and the top of the hook 220 is hinged to the bottom of the slider 212 through a hinge shaft 230. The hinge shaft 230 has the same axial direction as the extension direction of the support beam 211.

In some embodiments, in a natural state, the width of the upper portion of the hook cavity 223 of the hook 220 is larger than the width of the lower portion thereof, the width of the upper portion of the hook cavity 223 is larger than the width of the lifting lug, and the width of the lower portion of the hook cavity 223 is smaller than or equal to the width of the lifting lug, so as to ensure that the hook 220 can firmly lock the lifting lug in a hanging state, and the hook 220 can be smoothly separated from the slag ladle lifting lug when unhooking.

Specifically, as shown in fig. 5, in the hooking process, when the lifting lug completely enters the hook cavity 223 of the lifting hook 220 and the hook cavity 223 is closed, the lifting lug is located at the upper part of the hook cavity 223 (fig. 5D), the lifting hook 220 is operated to lift by the lifting appliance, the lifting lug slides downwards relative to the hook cavity 223 until the lifting lug 220 completely locks the lifting lug (fig. 5E), at this time, the lifting lug is located at the lower part of the hook cavity 223, and the width of the lower part of the hook cavity 223 is smaller than the width of the upper part of the hook cavity 223, so that the lifting hook 220 can be firmly locked in the hanging state, and the lifting lug is prevented from being separated from the hook cavity 223 in the lifting process.

As shown in fig. 6, in the unhooking process, the hanger is operated to move the hook 220 downward so that the lifting lug moves from the lower portion of the hook chamber 223 to the upper portion of the hook chamber 223 (fig. 6B), and thus the hook 220 can be smoothly separated from the lifting lug due to the large upper size of the hook chamber 223.

In some embodiments, as shown in fig. 5 and 6, the first and second lifting lugs 110 and 120 are provided on opposite outer sides of the ladle 100, respectively, and extend outwardly, respectively, and a drive mechanism is used to drive the two lifting hooks 220 away from each other to disengage the lifting hooks 220 from the hanging lifting lugs. For example, as shown in fig. 1, the first lifting lug 110 extends in a direction away from the slag ladle 100 along a first horizontal direction, the second lifting lug 120 extends in a direction away from the slag ladle 100 along a second horizontal direction, and during unhooking, the driving mechanism drives the two lifting hooks 220 to move so that the distance between the two lifting hooks becomes larger, and the two lifting hooks 220 are respectively separated from the first lifting lug 110 and the second lifting lug 120.

In some embodiments, the driving mechanism is further configured to drive the two hooks 220 to move along the guide rail 213 such that the distance between the two hooks 220 is a preset distance. That is, the distance between the two hooks 220 can be automatically adjusted by the driving mechanism. The drive mechanism may drive the two hooks 220 toward or away from each other to adjust the spacing between the two hooks 220.

In some embodiments, the drive mechanism is an electric push rod disposed between the two hooks 220 for pushing or pulling the two hooks 220 in a horizontal direction. The distance between the two hooks 220 is increased by extending the electric push rod to push the hooks 220 to move, and the distance between the two hooks 220 is decreased by shortening the electric push rod to pull the hooks 220 to move.

In the embodiment of fig. 1-4, the electric pushers include a first electric pusher 250 and a second electric pusher 260, each of the first electric pusher 250 and the second electric pusher 260 extends in a horizontal direction, and the extending direction is the same as the extending direction of the guide rail 213. One end of the first electric push rod 250 is fixed to the hanging beam 210, and the other end is connected to one of the sliders 212, and the first electric push rod 250 is extended and contracted to push and pull the slider 212 connected thereto to move along the guide rail 213, thereby moving the hanging hook 220 connected to the slider 212. The second electric push rod 260 has one end fixed to the hanger beam 210 and the other end connected to the other slider 212, and the second electric push rod 260 is extended and contracted to push and pull the slider 212 connected thereto to move along the guide rail 213, thereby moving the hanger 220 connected to the slider 212.

The distance between the hanging points is adjusted by adopting the two electric push rods, the relative positions of the two hanging hooks 220 can be adjusted by respectively controlling the expansion and contraction amounts of the first electric push rod 250 and the second electric push rod 260, and the positions of the hanging points can be randomly adjusted according to actual requirements, so that the unhooking hanger 200 can hang the conventional symmetrical parts and also can hang the asymmetrical parts, and has stronger universality and wider application range.

Further, as shown in fig. 1, the first electric push rod 250 and the second electric push rod 260 are respectively connected with the corresponding sliding blocks 212 through the mounting seats 214, and a part of the first electric push rod 250 and a part of the second electric push rod 260 are arranged inside the supporting beam 211, so that the influence of the external severe environment on the electric push rod can be well reduced.

The embodiment of the other aspect of the present invention further provides a unhooking method of the unhooking hanger 200, where the unhooking method includes:

and a hooking step: the distance between the two lifting hooks 220 is adjusted, the lifting crane operates the unhooking hanger 200 above the slag ladle 100, operates the unhooking hanger 200 to downwards operate, opens the hook cavities 223 of the two lifting hooks 220 by utilizing the first lifting lug 110 and the second lifting lug 120 and respectively enters the corresponding hook cavities 223, the lifting hooks 220 automatically draw in the closed hook cavities 223 by utilizing self gravity, and operates the unhooking hanger 200 to lift to the two lifting hooks 220 to completely lock the first lifting lug 110 and the second lifting lug 120 to form a hanging state;

a lifting step; the crane utilizes the unhooking hanger 200 to run the slag ladle 100 to a specified placement position;

unhooking: the unhooking hanger 200 is operated to move downward, and the driving mechanism drives the two hooks 220 to move in opposite directions along the guide rail 213, thereby disengaging the two hooks 220 from the first and second lifting lugs 210 and 220, respectively.

In some embodiments, the unhooking method of the unhooking hanger 200 further comprises:

resetting: after the unhooking hanger 200 is operated to be lifted to a safe height, the driving mechanism drives the two lifting hooks 220 to return to the original position, so that the distance between the two lifting hooks 220 is a preset distance;

the crane carries the unhooking spreader 200 for the next round of work.

The unhooking hanger 200 and the unhooking method of the unhooking hanger 200 in the embodiment of the present invention are described below with reference to fig. 1 to 6.

The unhooking sling 200 comprises a sling beam 210, two hooks 220, a first electric push rod 250 and a second electric push rod 260. The hanging beam 210 comprises a supporting beam 211, sliding blocks 212 and a guide rail 213, the guide rail 213 is arranged at the bottom of the supporting beam 211, the two sliding blocks 212 are slidably arranged on the guide rail 212, and the two hanging hooks 220 are hinged with the bottoms of the two sliding blocks 212 in a one-to-one correspondence manner through hinge shafts 230. The hook 220 includes a first plate hook 221 and a second plate hook 222.

As shown in fig. 1, the first plate hook 221 and the second plate hook 222 of the hook 220 are vertically disposed and overlap in the axial direction of the hinge shaft 230. As shown in fig. 2, the hook portion of the first plate hook 221 is located below the hinge shaft 230, the hook portion of the second plate hook 222 is located below the hinge shaft 230 and opposite to the hook portion of the first plate hook 221, and a hook cavity 223 is formed between the hook portion of the first plate hook 221 and the hook portion of the second plate hook 222, and it can be understood that the hook cavity 223 is opened at opposite sides in the axial direction of the hinge shaft 230.

As shown in fig. 2 and 5, the first plate hook 221 and the second plate hook 222 naturally droop in a natural state (i.e., without external force), and at this time, the hook portion of the first plate hook 221 and the hook portion of the second plate hook 222 have a partial overlap in the axial direction of the hinge shaft 230 so that the bottom of the hook cavity 223 is closed.

The bottom end surface of the hook portion of the first plate hook 221 is an inclined surface, and a side of the inclined surface away from the second plate hook 222 is lower than a side close to the second plate hook 222, that is, the inclined surface is lowered toward a position away from the second plate hook 222. The bottom end surface of the hook portion of the second plate hook 222 is an inclined surface, and the side of the inclined surface away from the first plate hook 221 is lower than the side close to the first plate hook 221, that is, the position of the inclined surface facing in the direction away from the first plate hook 221 is lowered. Preferably, the second plate hook 222 and the first plate hook 221 are symmetrical structures.

In the hooking process, as shown in fig. 5, the crane moves over the ladle 100 with the unhooking hanger 200 (fig. 5A), and the distance between the two hooks 220 is adjusted according to the inter-shackle distance. The unhooking hanger 200 is operated to run down against the corresponding lifting lug (fig. 5B), the unhooking hanger 200 is operated to continue to run down, the inclined bottom end surface of the first plate hook 221 and the inclined bottom end surface of the second plate hook 223 of the lifting hook 220 are both slid relative to the lifting lug under the abutment action of the lifting lug, and the first plate hook 221 and the second plate hook 222 are rotated about the hinge shaft 230 away from each other, so that the bottom of the hook cavity 223 is opened (fig. 5C) to allow the lifting lug to gradually enter the hook cavity 223. After the lifting lug completely enters the hook cavity 223, the first plate hook 221 and the second plate hook 222 can be naturally folded under the action of self gravity to close the hook cavity 223 (fig. 5D). The unhooking hanger 200 is operated to be lifted until the lifting hook 220 fully locks the lifting lug in the hook cavity 223 to form a hanging state (fig. 5E), and the hooking process is completed. After the hooking is completed, the crane continues to rise to a safe height, and the crane carries the slag ladle 100 to a specified placement position.

The bottom end surfaces of the first plate hook 221 and the second plate hook 222 are designed to be inclined surfaces, and the hook 220 is made to close the hook cavity 223 in a natural state, so that the hook 220 can complete a hooking process using a lifting lug and its own weight without manual operation.

The first electric push rod 250 and the second electric push rod 260 are located between the two sliders 212, and extend in the same direction as the guide rail 213. The first and second electric pushers 250 and 260 may push the connected slider 212 and drive the hooks 220 to slide along the guide rail 213 so as to adjust the distance between the hanging points.

In the unhooking process, as shown in fig. 6, when the slag ladle 100 reaches the ground or the platform surface state (fig. 6A), the crane operates the lifting appliance to move downwards (fig. 6B), the first electric push rod 250 and the second electric push rod 260 are used to extend to enlarge the distance between the two lifting hooks 220 until the two lifting hooks 220 are completely separated from the first lifting lug 110 and the second lifting lug 120 respectively (fig. 6C), and after the lifting appliance is lifted to the safe height, the first electric push rod 250 and the second electric push rod 260 are retracted to the original set positions (fig. 6D). The crane carries the lifting appliance to carry out the next round of operation.

The lifting hook of the unhooking lifting appliance provided by the embodiment of the invention has a simple structure and is ingenious in design. The lifting hook is composed of a front plate hook and a rear plate hook, and the two plate hooks can be freely opened and closed around the shaft. When the lifting appliance lifts the slag ladle, the lifting lug of the slag ladle can be firmly locked by the ingenious structural design of the hanging hook and the self weight of the hanging hook; when unhooking, the lifting hook and the slag ladle lifting lug can be completely separated by utilizing ingenious structural design of the hook and the extension of the electric push rod, and the automatic unhooking operation is fast and convenient, so that the production efficiency is improved, and the safety risk is reduced. The upper end of the hook cavity of the lifting hook is large and the lower end is small, so that the slag ladle lifting lug can be firmly locked in a hanging state, and the lifting hook and the slag ladle lifting lug can be completely separated in a unhooking state. The distance between the hanging points is adjusted by two electric push rods, the adjustment quantity of each electric push rod can be controlled, and besides the conventional symmetrical parts, the asymmetrical parts can be hoisted, so that the adaptability is high.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (10)

1. The utility model provides a lifting point interval adjustable unhooks hoist, its characterized in that for hoist the cinder ladle under the drive of hoist, be equipped with the lug that the level set up on the cinder ladle, the lug includes the opposite first lug of extending direction and second lug, unhooking hoist includes:

the lifting beam comprises a supporting beam and two sliding blocks, a guide rail extending along the horizontal direction is arranged on the supporting beam, and the two sliding blocks are both in sliding connection with the guide rail;

the two lifting hooks are respectively hinged with the two sliding blocks through hinge shafts and are respectively used for hanging the first lifting lug and the second lifting lug, the lifting hooks comprise a first plate hook and a second plate hook which are opposite, a hook cavity is formed between the first plate hook and the second plate hook, the first plate hook and the second plate hook can rotate around the hinge shafts to open or close the hook cavity, the bottom end surfaces of the first plate hook and the second plate hook are inclined surfaces, so that when the lifting hooks operate downwards, the inclined surfaces slide relative to the lifting lugs to open the hook cavity, and in a natural state, the hook cavity is closed, so that after the lifting lugs enter the hook cavity, the first plate hook and the second plate hook are retracted to close the hook cavity;

the driving mechanism is arranged on the hanging beam, acts on two lifting hooks and drives the two lifting hooks to move along the guide rail in opposite directions so as to separate the lifting hooks from the hanging lifting lugs.

2. The unhooking hanger with adjustable hanging point spacing according to claim 1, wherein the hanging beam comprises a plurality of movable pulley assemblies, and the plurality of movable pulley assemblies are arranged at the top of the supporting beam at intervals for being connected with a crane.

3. The unhooking hanger with adjustable hanging point spacing according to claim 1, wherein the width of the upper portion of the hook cavity is greater than the width of the lower portion thereof in a natural state, the width of the upper portion of the hook cavity is greater than the width of the lifting lug, and the width of the lower portion of the hook cavity is less than or equal to the width of the lifting lug.

4. The adjustable drop point spacing unhooking hanger of claim 1, wherein the first and second lifting eyes are respectively disposed on opposite outer sides of the ladle and extend outwardly therefrom, and the drive mechanism is adapted to drive the two lifting hooks away from each other to disengage the lifting hooks from the hanging lifting eyes.

5. The adjustable drop point spacing unhooking spreader of any one of claims 1-4, wherein the drive mechanism is further configured to drive two hooks along the rail such that the spacing between the hooks is a predetermined spacing.

6. The adjustable lifting point spacing unhooking hanger of claim 5, wherein the drive mechanism is an electric push rod disposed between two of the hooks for pushing or pulling the two hooks in a horizontal direction.

7. The unhooking hanger with adjustable hanging point spacing according to claim 6, wherein the electric push rod comprises a first electric push rod and a second electric push rod, one end of the first electric push rod is mutually fixed with a hanging beam, the other end of the first electric push rod is connected with one of the sliding blocks, one end of the second electric push rod is mutually fixed with the hanging beam, and the other end of the second electric push rod is connected with the other sliding block.

8. The adjustable hanger of claim 7, wherein a portion of the first and second electric push rods are disposed inside the support beam.

9. A unhooking method of a unhooking spreader according to any one of claims 1-8, the unhooking method comprising:

and a hooking step: the distance between the two lifting hooks is adjusted, the lifting crane moves the unhooking lifting appliance to the position above the slag ladle, the unhooking lifting appliance is operated to move downwards, the first lifting lug and the second lifting lug are utilized to open the hook cavities of the two lifting hooks and respectively enter the corresponding hook cavities, the lifting hook utilizes self gravity to automatically close the hook cavities, and the unhooking lifting appliance is operated to move to the position where the two lifting hooks are used to completely lock the first lifting lug and the second lifting lug, so that a hanging state is formed;

a lifting step; the crane utilizes the unhooking hanger to run the slag ladle to a specified placement position;

unhooking: and operating the unhooking hanger to downwards run, and driving the two lifting hooks to move along the guide rail in opposite directions by the driving mechanism so as to separate the two lifting hooks from the first lifting lug and the second lifting lug respectively.

10. The unhooking method of a unhooking sling according to claim 9, further comprising:

resetting: after the unhooking hanger is operated to be lifted to a safe height, the driving mechanism drives the two lifting hooks to return to the original positions, so that the distance between the two lifting hooks is a preset distance;

and carrying the unhooking lifting appliance by the crane to carry out next round of operation.