CN111891904A - Lifting appliance for steel cable crane - Google Patents

Abstract

The invention provides a lifting appliance for a steel cable crane, which comprises a first lifting seat and a second lifting seat, wherein the first lifting seat is positioned right above the second lifting seat, a movable shaft is movably arranged in the middle between the first lifting seat and the second lifting seat, a first lifting arm is movably arranged at the edge of the first lifting seat, a first rotating shaft is movably arranged between the first lifting arm and the first lifting seat, a second lifting arm is movably arranged at the lower end of the first lifting arm, a third rotating shaft is movably arranged between the second lifting arm and the first lifting arm, the lifting appliance for the steel cable crane can clamp and lift a lifted object from the outer surface of the lifted object, and simultaneously can internally lift smooth objects on the outer surface of a barrel, the lifting mode is diversified, the lifting of most objects is realized, after the steel cable is connected with a lifting ring, the steel cable is fixed, the separation of the steel cable and the lifting ring in the lifting process is avoided, the lifting ring is driven by a bearing to relatively rotate with the lifting seat, the steel cable is prevented from being broken due to torsion.

Description

Lifting appliance for steel cable crane

Technical Field

The invention relates to the technical field of hoisting, in particular to a lifting appliance for a steel cable crane.

Background

The steel cable crane is a hoisting and carrying machine widely used in ports, workshops, electric power, construction sites and other places, the name of the crane is a uniform title of the hoisting machine, the steel cable crane mainly comprises a hoisting mechanism, an operating mechanism, a luffing mechanism, a slewing mechanism, a lifting appliance and the like, but the existing lifting appliance has certain defects: 1. the existing lifting appliance can only clamp the outer surface of the lifting appliance, the lifting appliance is very inconvenient for a barrel body with a smooth outer surface, 2, the lifting appliance is connected with steel of a crane through a lifting ring, in the lifting process, a steel cable hook has the risk of falling off from the lifting ring, 3, the lifting object can drive the steel cable to rotate due to shaking in the lifting process, the steel cable is twisted, and the twisted part is easy to break in the past.

Disclosure of Invention

The invention aims to provide a lifting appliance for a steel cable crane, which can clamp and lift an object to be lifted from the outer surface of the object to be lifted, can lift the smooth object on the outer surface of a barrel internally, has diversified lifting modes, realizes the lifting of most objects, fixes the steel cable after the steel cable is connected with a lifting ring, avoids the separation of the steel cable from the lifting ring in the lifting process, utilizes a bearing to drive the lifting ring to rotate relative to a lifting seat, and avoids the fracture of the steel cable due to torsion.

The invention provides a lifting appliance for a steel cable crane, which comprises a first lifting seat and a second lifting seat, wherein the first lifting seat is positioned right above the second lifting seat, a movable shaft is movably arranged at the middle position between the first lifting seat and the second lifting seat, a first lifting arm is movably arranged at the edge of the first lifting seat, a first rotating shaft is movably arranged between the first lifting arm and the first lifting seat, a second lifting arm is movably arranged at the lower end of the first lifting arm, a third rotating shaft is movably arranged between the second lifting arm and the first lifting seat, the lower end of the second lifting arm is rotatably connected with the second lifting seat, a third lifting arm is movably arranged between the second lifting arm and the second lifting seat, a second rotating shaft is movably arranged among the second lifting arm, the second lifting seat and the third lifting arm, a fixed seat is fixedly arranged at the lower end of the third lifting arm, and a first lifting plate is movably arranged at one side of the fixed seat far away from the second lifting seat, the fixing base is close to one side movable mounting of second hanging seat and has the second hanger plate, the equal movable mounting in upper end surface both sides of first hanging seat has first rings, and the upper end surface intermediate position movable mounting of first hanging seat has second rings, the equal fixed mounting of lower extreme surface of first rings and second rings has the hanging ring seat, and the hanging ring seat inlays in the inside of first hanging seat, centre fixed connection between the lower extreme surface of hanging ring seat and the loose axle.

Preferably, the middle position of the upper end outer surface of the lifting ring seat is movably provided with a positioning shaft, the upper end outer surface of the positioning shaft is provided with a positioning groove, the lower end position of the front end outer surface of the positioning shaft is provided with a fixing hole, the position of the inner part of the lifting ring seat corresponding to the positioning shaft is provided with a groove, the lower end outer surface of the positioning shaft is fixedly provided with a limiting block, and a spring is movably arranged between the limiting block and the groove.

When the cable wire is connected with first rings or second rings, press the location axle earlier, make location axle shrink to inside the recess, spring shrinkage is out of shape this moment, then go into the inside of first rings or second rings with the lifting hook card on the cable wire, loosen the location axle after that, spring reset pops out the location axle from the recess is inside, the stopper can prevent location axle and recess and break away from, later utilize the epaxial constant head tank in location to block the lifting hook, and penetrate the epaxial fixed orifices of location inside with fixing bolt, thereby fix the location axle, fix between lifting hook and first rings or second rings through the location axle, avoid lifting hook and first rings or second rings taking place to break away from at the in-process that lifts by crane, the potential safety hazard has been reduced.

Preferably, the positioning shaft penetrates through the inside of the groove, and the diameter of the limiting block is larger than the diameter of the positioning shaft penetrating into the inner through hole of the lifting ring seat.

Press the location axle earlier for inside the location axle shrink to the recess, spring shrink deformation this moment, then with the inside of first rings or second rings of lifting hook card on the cable wire, loosen the location axle after that, spring return pops out the location axle from the recess is inside, and the stopper can prevent that location axle and recess from breaking away from.

Preferably, the loose axle runs through in the inside of second hanger seat, and all movable mounting have the bearing body between the surface lower extreme of loose axle and the second hanger seat and between the surface of suspension loop seat and the first hanger seat, the contact surface movable mounting of bearing body and suspension loop seat and loose axle has the ball.

In the hoisting process, the hoisting object can slide in the air, so that the hoisting tool drives the steel cable to rotate, the steel cable is stressed on the first hoisting ring or the second hoisting ring when rotating, the first hoisting ring or the second hoisting ring is rotated, and the bearing body is arranged between the hoisting ring seat and the first hoisting seat, so that the steel cable does not rotate along with the hoisting tool when the hoisting tool rotates, the torque force of the steel cable is reduced, and the steel cable is prevented from being broken due to long-term torsion.

Preferably, the outer surfaces of the first lifting plate and the second lifting plate are wrapped with rubber layers, and the outer surfaces of the rubber layers are corrugated.

The rubber layer protects the lifting object, the first lifting plate and the second lifting plate are prevented from scratching the lifting object, the surface of the rubber layer is provided with ripples, friction force between the lifting object, the first lifting plate and the second lifting plate is increased, and lifting is more stable.

Preferably, the first hanging seat can move up and down along the movable shaft.

And connecting a steel cable of the crane with a second hoisting ring, hoisting, pulling the second hoisting seat to move upwards by the second hoisting ring under the action of an upward traction force through a movable shaft to close the first hoisting seat, and rotating, folding and closing the first hoisting arm and the second hoisting arm through a first rotating shaft and a third rotating shaft respectively.

Advantageous effects

1. When an object with a bulge on the outer surface is hoisted, a steel cable of a crane is connected with a second hoisting ring and then hoisted, the second hoisting ring is subjected to upward traction force, a second hoisting seat is pulled to move upwards through a movable shaft to be closed with a first hoisting seat, at the moment, a first hoisting arm and a second hoisting arm respectively rotate through a first rotating shaft and a third rotating shaft to be folded and closed, a third hoisting arm rotates in a direction close to the second hoisting seat through a second rotating shaft, the object is clamped by a second hoisting plate and then hoisted, during the hoisting process, because the first hoisting arm and the second hoisting arm which are folded together are arranged right above the third hoisting arm, the first hoisting arm and the second hoisting arm form a shield on the lower hoisting object, the hoisting object is prevented from generating inclined deviation, when the object with the smooth outer surface similar to the whole body is hoisted, a hoisting tool stretches into the whole body to connect the steel cable of the crane with the first hoisting ring, then hoisting is carried out, the first hoisting ring is subjected to upward traction force, the first hoisting ring is connected with the first hoisting seat to drive the first hoisting seat to move upwards to be separated from the second hoisting seat, the first hoisting arm rotates towards the direction close to the first hoisting seat through the first rotating shaft due to the relative displacement of the first hoisting seat and the second hoisting seat, meanwhile, the first hoisting arm drives the second hoisting arm to rotate towards the direction close to the first hoisting seat through the second rotating shaft, the second hoisting arm drives the third hoisting arm to rotate towards the direction far away from the first hoisting seat through the second rotating shaft, so that the third hoisting arm is unfolded, and the third hoisting arm supports the inner surface of the barrel body through the first hoisting plate, thereby fixedly hoisting the barrel body;

2. when the steel cable is connected with the first hanging ring or the second hanging ring, the positioning shaft is pressed firstly, so that the positioning shaft is contracted into the groove, the spring is contracted and deformed at the moment, then the lifting hook on the steel cable is clamped into the first hanging ring or the second hanging ring, then the positioning shaft is loosened, the positioning shaft is popped out from the groove by spring resetting, the limiting block can prevent the positioning shaft from being separated from the groove, then the lifting hook is clamped by the positioning groove on the positioning shaft, the fixing bolt penetrates into the fixing hole on the positioning shaft, so that the positioning shaft is fixed, the lifting hook is fixed with the first hanging ring or the second hanging ring through the positioning shaft, the lifting hook is prevented from being separated from the first hanging ring or the second hanging ring in the lifting process, and the potential safety hazard is reduced;

3. in the hoisting process, the hoisting object can slide in the air, so that the hoisting tool drives the steel cable to rotate, the steel cable is stressed on the first hoisting ring or the second hoisting ring when rotating, the first hoisting ring or the second hoisting ring is rotated, and the bearing body is arranged between the hoisting ring seat and the first hoisting seat, so that the steel cable does not rotate along with the hoisting tool when the hoisting tool rotates, the torque force of the steel cable is reduced, and the steel cable is prevented from being broken due to long-term torsion.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

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

FIG. 2 is an associated view of the first eye of the present invention with a shackle seat;

FIG. 3 is a view of the present invention showing the hanger bracket in combination with a positioning shaft;

fig. 4 is a combined view of the first hanger bracket, the second hanger bracket and the hanger ring bracket of the present invention.

Description of reference numerals:

1. a first hanger base; 2. a second hanger bracket; 3. a movable shaft; 4. a first boom; 5. a first rotating shaft; 6. a second boom; 7. a second rotating shaft; 8. a third rotating shaft; 9. a third boom; 10. a fixed seat; 11. a first lifting plate; 12. a second lifting plate; 13. a first hanging ring; 14. a second hoisting ring; 15. a suspension ring seat; 16. positioning the shaft; 17. positioning a groove; 18. a fixing hole; 19. a limiting block; 20. a groove; 21. a spring; 22. a bearing body; 23. and a ball.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to 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", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 4, the present invention provides a technical solution:

a lifting appliance for a steel cable crane comprises a first lifting seat 1 and a second lifting seat 2, wherein the first lifting seat 1 is positioned right above the second lifting seat 2, a movable shaft 3 is movably arranged at the middle position between the first lifting seat 1 and the second lifting seat 2, a first lifting arm 4 is movably arranged at the edge of the first lifting seat 1, a first rotating shaft 5 is movably arranged between the first lifting arm 4 and the first lifting seat 1, a second lifting arm 6 is movably arranged at the lower end of the first lifting arm 4, a third rotating shaft 8 is movably arranged between the second lifting arm 6 and the first lifting arm 4, the lower end of the second lifting arm 6 is rotatably connected with the second lifting seat 2, a third lifting arm 9 is movably arranged between the second lifting arm 6 and the second lifting seat 2, a second rotating shaft 7 is movably arranged between the second lifting arm 6, the second lifting seat 2 and the third lifting arm 9, and a fixed seat 10 is fixedly arranged at the lower end of the third lifting arm 9, a first lifting plate 11 is movably mounted on one side, away from the second lifting seat 2, of the fixed seat 10, a second lifting plate 12 is movably mounted on one side, close to the second lifting seat 2, of the fixed seat 10, first lifting rings 13 are movably mounted on two sides of the outer surface of the upper end of the first lifting seat 1, a second lifting ring 14 is movably mounted in the middle of the outer surface of the upper end of the first lifting seat 1, lifting ring seats 15 are fixedly mounted on the outer surfaces of the lower ends of the first lifting rings 13 and the second lifting rings 14, the lifting ring seats 15 are embedded in the first lifting seat 1, and the outer surface of the lower end of the middle lifting ring seat 15 is fixedly connected with the movable shaft 3;

by adopting the technical scheme, when an object with a convex outer surface is hoisted, a steel cable of a crane is connected with the second hoisting ring 14, then hoisting is carried out, the second hoisting ring 14 is subjected to upward traction force, the second hoisting seat 2 is pulled to move upwards through the movable shaft 3 to be closed with the first hoisting seat 1, at the moment, the first hoisting arm 4 and the second hoisting arm 6 respectively rotate and are folded through the first rotating shaft 5 and the third rotating shaft 8, the third hoisting arm 9 rotates towards the direction close to the second hoisting seat 2 through the second rotating shaft 7, the object is clamped by the second hoisting plate 12, then hoisting is carried out, during the hoisting process, because the first hoisting arm 4 and the second hoisting arm 6 which are folded together are arranged right above the third hoisting arm 9, the first hoisting arm 4 and the second hoisting arm 6 shield the hoisting object below through the first hoisting arm 4 and the second hoisting arm 6, the hoisting object is prevented from being inclined and deviated, when an object with a smooth outer surface similar to a whole body is hoisted, the lifting appliance extends into the whole body, a steel cable of a crane is connected with the first lifting ring 13 and then lifted, the first lifting ring 13 is subjected to upward traction force, the first lifting ring 13 is connected with the first lifting seat 1 to drive the first lifting seat 1 to move upwards and separate from the second lifting seat 2, due to the fact that the first lifting seat 1 and the second lifting seat 2 are displaced relatively, the first lifting arm 4 rotates towards the direction close to the first lifting seat 1 through the first rotating shaft 5, meanwhile, the first lifting arm 4 drives the second lifting arm 6 to rotate towards the direction close to the first lifting seat 1 through the second rotating shaft 7, the second lifting arm 6 drives the third lifting arm 9 to rotate towards the direction far away from the first lifting seat 1 through the second rotating shaft 7, the third lifting arm 9 is unfolded, and the third lifting arm 9 supports the inner surface of the barrel body through the first lifting plate 11, and therefore the barrel body is fixedly lifted.

As an embodiment of the present invention, as shown in fig. 2 and 3, a positioning shaft 16 is movably installed at a middle position of an outer surface of an upper end of the suspension ring seat 15, a positioning groove 17 is formed on an outer surface of an upper end of the positioning shaft 16, a fixing hole 18 is formed at a lower end position of an outer surface of a front end of the positioning shaft 16, a groove 20 is formed in the suspension ring seat 15 corresponding to the positioning shaft 16, a limiting block 19 is fixedly installed on an outer surface of a lower end of the positioning shaft 16, a spring 21 is movably installed between the limiting block 19 and the groove 20, the positioning shaft 16 penetrates through the groove 20, a diameter of the limiting block 19 is larger than a diameter of the positioning shaft 16 penetrating through the inner hole of the suspension ring seat 15, when the steel cable is connected with the first suspension ring 13 or the second suspension ring 14, the positioning shaft 16 is pressed first to contract the positioning shaft into the groove 20, the spring 21 contracts and deforms, and then the hook on the steel cable is clamped, then loosen positioning shaft 16, spring 21 resets and pops out positioning shaft 16 from recess 20 is inside, stopper 19 can prevent that positioning shaft 16 and recess 20 break away from, later utilize the constant head tank 17 on positioning shaft 16 to block the lifting hook, and penetrate fixing bolt inside the fixed orifices 18 on positioning shaft 16, thereby fix positioning shaft 16, fix between lifting hook and first rings 13 or second rings 14 through positioning shaft 16, avoid lifting hook and first rings 13 or second rings 14 to take place to break away from in the lifting process, reduced the potential safety hazard.

As an embodiment of the present invention, as shown in fig. 4, the movable shaft 3 penetrates through the second hanging seat 2, and bearing bodies 22 are movably installed between the lower end of the outer surface of the movable shaft 3 and the second hanging seat 2 and between the outer surface of the hanging ring seat 15 and the first hanging seat 1, and balls 23 are movably installed on contact surfaces of the bearing bodies 22, the hanging ring seat 15 and the movable shaft 3, so that the hanging tool drives the steel cable to rotate during the hanging process, the steel cable is stressed on the first hanging ring 13 or the second hanging ring 14 during the rotation of the steel cable, so that the first hanging ring 13 or the second hanging ring 14 rotates, and the bearing bodies 22 are installed between the hanging ring seat 15 and the first hanging seat 1, so that the steel cable does not rotate along with the hanging tool during the rotation of the hanging tool, thereby reducing the torque force of the steel cable and avoiding the breakage of the steel cable due to long-term torsion.

The working principle is as follows: when an object with a protrusion on the outer surface is lifted, a steel cable of a crane is connected with the second hanging ring 14, then the crane is lifted, when the steel cable is connected with the first hanging ring 13 or the second hanging ring 14, the positioning shaft 16 is firstly pressed to enable the positioning shaft 16 to shrink into the groove 20, at the moment, the spring 21 shrinks and deforms, then the hook on the steel cable is clamped into the first hanging ring 13 or the second hanging ring 14, then the positioning shaft 16 is loosened, the spring 21 resets to enable the positioning shaft 16 to be ejected out of the groove 20, the limiting block 19 can prevent the positioning shaft 16 from being separated from the groove 20, then the positioning groove 17 on the positioning shaft 16 is used for clamping the hook, and a fixing bolt is inserted into the fixing hole 18 on the positioning shaft 16, so that the positioning shaft 16 is fixed, the hook and the first hanging ring 13 or the second hanging ring 14 are fixed through the positioning shaft 16, and the hook is prevented from being separated from the first hanging ring 13 or the second, the potential safety hazard is reduced, the second hoisting ring 14 is upwards pulled by the movable shaft 3 to move upwards to be closed with the first hoisting seat 1, at the moment, the first hoisting arm 4 and the second hoisting arm 6 respectively rotate, fold and close through the first rotating shaft 5 and the third rotating shaft 8, the third hoisting arm 9 rotates through the second rotating shaft 7 to a direction close to the second hoisting seat 2, and the object is clamped by the second hoisting plate 12, then hoisting is carried out, during the hoisting process, because the first hoisting arm 4 and the second hoisting arm 6 which are folded together are arranged right above the third hoisting arm 9, the first hoisting arm 4 and the second hoisting arm 6 form a shield on the hoisting object below through the first hoisting arm 4 and the second hoisting arm 6, the hoisting object is prevented from being inclined and deviated, when the object similar to the smooth outer surface of the whole body is hoisted, the hoisting tool stretches into the inside of the whole body, the steel cable of the crane is connected with the first hoisting ring 13, then the first hoisting ring 13 is upwards pulled by the first hoisting force, the first hanging ring 13 is connected with the first hanging seat 1 to drive the first hanging seat 1 to move upwards and separate from the second hanging seat 2, because the first hanging seat 1 and the second hanging seat 2 generate relative displacement, the first suspension arm 4 rotates towards the direction close to the first hanging seat 1 through the first rotating shaft 5, simultaneously the first suspension arm 4 drives the second suspension arm 6 to rotate towards the direction close to the first hanging seat 1 through the second rotating shaft 7, the second suspension arm 6 drives the third suspension arm 9 to rotate towards the direction far away from the first hanging seat 1 through the second rotating shaft 7, so that the third suspension arm 9 is unfolded, the third suspension arm 9 supports the inner surface of the barrel body through the first lifting plate 11 to fixedly lift the barrel body, in the lifting process, because a lifting object can slide in the air, the lifting appliance drives the steel cable to rotate, when the steel cable rotates, the first hanging ring 13 or the second hanging ring 14 is stressed, so that the first hanging ring 13 or the second hanging ring 14 rotates, because the bearing body 22 is arranged between the lifting ring seat 15 and the first lifting seat 1, when the lifting appliance rotates, the steel cable does not rotate along with the lifting appliance, so that the torque force of the steel cable is reduced, and the steel cable is prevented from being broken due to long-term torsion.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (6)

1. A lifting appliance for a steel cable crane comprises a first lifting seat (1) and a second lifting seat (2), and is characterized in that the first lifting seat (1) is positioned right above the second lifting seat (2), a movable shaft (3) is movably arranged at the middle position between the first lifting seat (1) and the second lifting seat (2), a first lifting arm (4) is movably arranged at the edge of the first lifting seat (1), a first rotating shaft (5) is movably arranged between the first lifting arm (4) and the first lifting seat (1), a second lifting arm (6) is movably arranged at the lower end of the first lifting arm (4), a third rotating shaft (8) is movably arranged between the second lifting arm (6) and the first lifting arm (4), the lower end of the second lifting arm (6) is rotatably connected with the second lifting seat (2), a third lifting arm (9) is movably arranged between the second lifting arm (6) and the second lifting seat (2), a second rotating shaft (7) is movably arranged among the second suspension arm (6), the second suspension seat (2) and the third suspension arm (9), a fixed seat (10) is fixedly arranged at the lower end of the third suspension arm (9), and one side of the fixed seat (10) far away from the second hanging seat (2) is movably provided with a first lifting plate (11), a second lifting plate (12) is movably arranged on one side of the fixed seat (10) close to the second lifting seat (2), two sides of the outer surface of the upper end of the first hanging seat (1) are movably provided with first hanging rings (13), a second hanging ring (14) is movably arranged in the middle of the outer surface of the upper end of the first hanging seat (1), the outer surfaces of the lower ends of the first hanging ring (13) and the second hanging ring (14) are fixedly provided with hanging ring seats (15), and the lifting ring seat (15) is embedded in the first lifting seat (1), and the outer surface of the lower end of the lifting ring seat (15) is fixedly connected with the movable shaft (3).

2. The lifting appliance for the steel cable crane according to claim 1, wherein a positioning shaft (16) is movably mounted in the middle of the outer surface of the upper end of the lifting ring seat (15), a positioning groove (17) is formed in the outer surface of the upper end of the positioning shaft (16), a fixing hole (18) is formed in the lower end of the outer surface of the front end of the positioning shaft (16), a groove (20) is formed in the position, corresponding to the positioning shaft (16), of the inner portion of the lifting ring seat (15), a limiting block (19) is fixedly mounted on the outer surface of the lower end of the positioning shaft (16), and a spring (21) is movably mounted between the limiting block (19) and the groove (20).

3. A spreader as claimed in claim 2, wherein the locating shaft (16) extends through the recess (20), and the diameter of the stop (19) is greater than the diameter of the locating shaft (16) passing through the bore in the seat (15).

4. The lifting appliance for the steel cable crane according to claim 1, wherein the movable shaft (3) penetrates through the second lifting seat (2), bearing bodies (22) are movably mounted between the lower end of the outer surface of the movable shaft (3) and the second lifting seat (2) and between the outer surface of the lifting ring seat (15) and the first lifting seat (1), and balls (23) are movably mounted on contact surfaces of the bearing bodies (22) with the lifting ring seat (15) and the movable shaft (3).

5. A spreader as claimed in claim 1, wherein the outer surfaces of the first and second lifting plates (11, 12) are coated with a rubber layer, the outer surface of the rubber layer being corrugated.

6. A spreader according to claim 1, wherein the first spreader base (1) is movable up and down along the movable axis (3).

Images