Lifting appliance with adjustable lifting point for crane

Abstract

The utility model discloses a lifting appliance with an adjustable lifting point for a crane, which relates to the technical field of hoisting machinery and comprises a rotary driving part, a rotary support frame, an upper frame, a middle frame, a transverse driving part, a longitudinal guide rail, a transverse guide rail, a suspended beam, a movable lock and a longitudinal driving part, the rotary driving piece is in driving connection with the rotary supporting frame, the upper frame is connected with the middle frame through the rotary supporting frame, and a movable pulley block is assembled on the upper frame; the transverse guide rail is transversely installed on the middle frame and is in driving connection with the transverse driving piece, the hanging beam is assembled on the transverse guide rail, the longitudinal guide rail is longitudinally installed on the hanging beam and is in driving connection with the longitudinal driving piece, the movable lock is assembled on the longitudinal guide rail, and the hanging head is assembled at the bottom end of the movable lock; the transverse driving piece drives the hanging beam to transversely move on the transverse guide rail to drive the hanging head to transversely move, the longitudinal driving piece drives the movable lock to longitudinally move on the longitudinal guide rail to drive the hanging head to longitudinally move, and in other words, the hanging point of the hanging head can be transversely and longitudinally adjusted to facilitate hoisting.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting machinery, and more specifically to a crane spreader with adjustable lifting points. Background Art

[0002] A crane is a multi-action machine that vertically lifts and horizontally transports goods within a certain range. It is widely used in fields such as engineering construction and steel transportation, providing great convenience for the handling of goods. A spreader is an important tool for the hoisting of crane equipment. The crane spreader is in direct contact with the goods. The crane grabs the goods through the spreader and transports them to the predetermined position.

[0003] In the prior art, the spreader is limited to lifting fixed-position lifting heads (such as container spreaders). With the intelligent development of the assembly manufacturing industry, the spreader needs to adapt to equipment with different sizes, different lifting points, and different postures.

[0004] In the prior art, the patent with the publication number CN214780185U discloses a rotatable spreader and a crane, which relates to the technical field of lifting equipment. The rotatable spreader of the present utility model includes a suspension frame, a slewing mechanism, an external gear type slewing bearing, and a rotating boom. A flange is provided at the bottom of the suspension frame, and the flange is fixedly connected to the inner ring of the slewing support frame through bolts. The outer ring of the slewing support frame is bolted to the flange on the rotating boom. The slewing mechanism is installed on the suspension frame, and the power output end of the slewing mechanism meshes with the teeth on the outer ring of the slewing support frame. The rotating boom of the spreader of the present utility model can rotate 360° around the lifting point center, thereby driving the rotation of the lifted member and realizing the attitude adjustment of the lifted member at any position and angle in the air. The hoisting mechanism of the rotatable spreader is a single lifting point, which reduces the layout size of the spreader, can adapt to the hoisting in narrow spaces, and improves the adaptability and versatility of hoisting.

[0005] For the rotatable spreader disclosed in the above patent, its lifting point is located on the rotating boom, and the lifting point cannot be adjusted horizontally and longitudinally on the rotating boom, which is not very applicable in some working conditions. Summary of the Utility Model

[0006] In order to overcome the defects existing in the above prior art, the purpose of the present utility model is to provide a crane spreader with adjustable lifting points, so that its lifting points can be adjusted horizontally and longitudinally to adapt to equipment with different sizes, different lifting points, and different postures.

[0007] In order to achieve the above purpose, the technical solution adopted by the present utility model is:

[0008] A crane spreader with adjustable lifting points includes a slewing drive member, a slewing support frame, an upper frame, a middle frame, a horizontal drive member, a longitudinal guide rail, a horizontal guide rail, a hanging beam, a moving lock, and a longitudinal drive member;

[0009] The slewing drive is drivingly connected to the slewing support frame, and the upper frame is connected to the middle frame through the slewing support frame. A movable pulley block is assembled on the upper frame;

[0010] The transverse guide rail is horizontally installed on the middle frame and is drivingly connected to the transverse drive. The hanging beam is assembled on the transverse guide rail. The longitudinal guide rail is longitudinally installed on the hanging beam and is drivingly connected to the longitudinal drive. The movable locking device is assembled on the longitudinal guide rail, and a hanging head is assembled at the bottom of the movable locking device. The transverse drive drives the hanging beam to move horizontally on the transverse guide rail to drive the hanging head to move horizontally, and the longitudinal drive drives the movable locking device to move longitudinally on the longitudinal guide rail to drive the hanging head to move longitudinally.

[0011] Preferably, the movable pulley block includes four movable pulleys. The four movable pulleys are respectively connected to a drum drive mechanism through steel wire ropes. The drum drive mechanism drives two movable pulleys to lift through the steel wire ropes to drive the hanging head to move in the pitch angle direction, and drives two movable pulleys to lift to drive the hanging head to move in the roll angle direction.

[0012] Preferably, the slewing drive drives the slewing support frame to rotate, driving the hanging head to rotate in the yaw angle direction.

[0013] Preferably, the spreader is assembled on the trolley traveling mechanism of the crane equipment for X-direction degree of freedom adjustment.

[0014] Preferably, the spreader is assembled on the crab traveling mechanism of the crane equipment for Y-direction degree of freedom adjustment.

[0015] Preferably, the spreader is assembled on the hoisting mechanism of the crane equipment for Z-direction degree of freedom adjustment.

[0016] Preferably, two transverse guide rails are arranged in parallel. Two parallel hanging beams are assembled between the two transverse guide rails, and two movable locking devices are installed on each hanging beam.

[0017] Preferably, the lower end of the movable pulley block is connected to the upper frame through a spherical plain bearing.

[0018] Advantages of the present utility model:

[0019] The crane spreader with adjustable lifting points provided by the present utility model. The transverse drive drives the hanging beam to move horizontally on the transverse guide rail to drive the hanging head to move horizontally, and the longitudinal drive drives the movable locking device to move longitudinally on the longitudinal guide rail to drive the hanging head to move longitudinally, that is, the lifting point of the hanging head can be adjusted horizontally and longitudinally, thus facilitating the lifting of goods.

[0020] The adjustable sling for crane lifting points provided by the present utility model has six degrees of freedom. By driving two movable pulleys to lift and lower, the lifting head can be adjusted in two degrees of freedom directions, namely the pitch angle (Rx) direction and the roll angle (Ry) direction. By driving the rotary support frame to rotate with a rotary driving member, the lifting head can be adjusted in the yaw angle (Rz) degree of freedom direction. By means of the trolley traveling mechanism, the crab traveling mechanism, and the hoisting mechanism of the crane equipment, the degrees of freedom in the X, Y, and Z directions are adjusted, enabling the adjustable sling for crane lifting points to have different postures, thereby facilitating the lifting of goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the adjustable sling for crane lifting points of the present utility model;

[0022] Figure 2 For the present utility model Figure 1 View A - A;

[0023] Figure 3 For the present utility model Figure 1 View B - B;

[0024] Reference numerals:

[0025] 1, rotary driving member; 2, rotary support frame; 3, upper frame; 4, middle frame; 5, transverse driving member; 6, longitudinal guide rail; 7, transverse guide rail; 8, hanging beam; 9, movable locking device; 10, longitudinal driving member; 11, lifting head; 12, movable pulley block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the concept, specific structure, and technical effects generated by the present utility model in combination with the embodiments and the drawings, so as to fully understand the purpose, features, and effects of the present utility model.

[0027] Embodiment 1

[0028] An adjustable sling for crane lifting points, as Figures 1 - 3 shown, includes a rotary driving member 1, a rotary support frame 2, an upper frame 3, a middle frame 4, a transverse driving member 5, a longitudinal guide rail 6, a transverse guide rail 7, a hanging beam 8, a movable locking device 9, and a longitudinal driving member 10;

[0029] The rotary driving member 1 is drivingly connected to the rotary support frame 2. The upper frame 3 is connected to the middle frame 4 through the rotary support frame 2, and a movable pulley block 12 is assembled on the upper frame 3;

[0030] The transverse guide rail 7 is horizontally installed on the middle frame 4 and is drivingly connected to the transverse driving member 5. The hanging beam 8 is assembled on the transverse guide rail 7. The longitudinal guide rail 6 is longitudinally installed on the hanging beam 8 and is drivingly connected to the longitudinal driving member 10. The moving lock 9 is assembled on the longitudinal guide rail 6, and a hanging head 11 is assembled at the bottom of the moving lock 9. The transverse driving member 5 drives the hanging beam 8 to move horizontally on the transverse guide rail 7, driving the hanging head 11 to move horizontally. The longitudinal driving member 10 drives the moving lock 9 to move longitudinally on the longitudinal guide rail 6, driving the hanging head 11 to move longitudinally.

[0031] In this embodiment, the transmission modes of the transverse driving member 5, the transverse guide rail 7, and the hanging beam 8, as well as the transmission modes of the longitudinal driving member 10, the longitudinal guide rail 6, and the moving lock 9, can all be the conventional motor + lead screw nut transmission mode in the prior art. The motor drives the lead screw to rotate, and then drives the nut to move linearly on the lead screw. The transverse driving member 5 drives the hanging beam 8 to move horizontally on the transverse guide rail 7, driving the hanging head 11 to move horizontally. The longitudinal driving member 10 drives the moving lock 9 to move longitudinally on the longitudinal guide rail 6, driving the hanging head 11 to move longitudinally. That is, the hanging point of the hanging head 11 can be adjusted horizontally and longitudinally, thus facilitating hoisting. The moving lock 9 is used to lock the equipment to be lifted.

[0032] Embodiment 2

[0033] This embodiment is further elaborated on the basis of Embodiment 1. As Figure 2 and Figure 3 shown, the movable pulley block 12 includes four movable pulleys. The four movable pulleys are respectively connected to a drum driving mechanism through steel wire ropes. The drum driving mechanism drives two of the movable pulleys to lift and lower through the steel wire ropes, driving the hanging head 11 to move in the pitch angle direction, and drives two of the movable pulleys to lift and lower through the steel wire ropes, driving the hanging head 11 to move in the roll angle direction.

[0034] In this embodiment, the arrangement mode of the four movable pulleys can be arranged at the four corners of a rectangle. The four corners of the rectangle are successively points A, B, C, and D, corresponding to the four movable pulleys respectively. AB and CD are parallel to the X-axis, and BC and AD are parallel to the Y-axis.

[0035] The drum driving mechanism drives two of the movable pulleys AB or CD to lift and lower through the steel wire ropes, driving the hanging head 11 to move in the pitch angle direction, realizing the adjustment of the hanging head 11 in the pitch angle Rx degree of freedom direction; the drum driving mechanism drives two of the movable pulleys BC or AD to lift and lower through the steel wire ropes, driving the hanging head 11 to move in the roll angle direction, realizing the adjustment of the hanging head 11 in the roll angle Ry degree of freedom direction. That is, by raising or lowering 2 movable pulleys on one side, the movement of the lifting tool in the pitch angle (Rx) and roll angle (Ry) directions is realized.

[0036] In addition, the slewing drive member 1 drives the slewing support frame 2 to rotate, driving the lifting head 11 to rotate in the yaw angle direction, that is, driving the lifting head to adjust in the yaw angle Rz degree of freedom direction.

[0037] Therefore, the lifting head 11 of this embodiment can utilize the slewing drive member 1, the slewing support frame 2 and the movable pulley block 12 to achieve adjustment in three degrees of freedom directions of pitch angle Rx, roll angle Ry and yaw angle Rz.

[0038] In addition, the connection mode between the movable pulley block 12 and the drum drive mechanism in this embodiment can adopt the form of the patent with the publication number CN214780185U in the background art, and this embodiment will not be elaborated here.

[0039] Embodiment 3

[0040] This embodiment is further elaborated on the basis of Embodiment 2. As Figure 2 and Figure 3 shown, the spreader is assembled on the trolley traveling mechanism of the crane equipment for X-direction degree of freedom adjustment. The spreader is assembled on the crab traveling mechanism of the crane equipment for Y-direction degree of freedom adjustment. The spreader is assembled on the hoisting mechanism of the crane equipment for Z-direction degree of freedom adjustment.

[0041] That is, in this embodiment, through the trolley traveling mechanism, crab traveling mechanism, and hoisting mechanism of the crane equipment, three degrees of freedom adjustments of the spreader in the X-direction, Y-direction, and Z-direction can be performed. The structures and arrangement methods of the trolley traveling mechanism, crab traveling mechanism, and hoisting mechanism of the crane equipment can be conventional structures and arrangement methods in the prior art. For example, for the structures of the trolley traveling mechanism, crab traveling mechanism, and hoisting mechanism, they can be conventional linear modules in the prior art. For the arrangement method, the hoisting mechanism is installed at the output end of the trolley traveling mechanism, the crab traveling mechanism is installed at the output end of the hoisting mechanism, the spreader is installed at the output end of the crab traveling mechanism, and the trolley traveling mechanism drives the spreader to travel in the X-direction, the hoisting mechanism drives the spreader to travel in the Z-direction, and the crab traveling mechanism drives the spreader to travel in the Y-direction.

[0042] Embodiment 4

[0043] This embodiment is further elaborated on the basis of Embodiment 3. As Figure 1 shown, two transverse guide rails 7 are arranged in parallel, and two parallel hanging beams 8 are assembled between the two transverse guide rails 7. Two movable locks 9 are installed on each hanging beam 8. That is, this embodiment is provided with four lifting head 11 suspension points, which can realize the horizontal and vertical movement of the four lifting head 11 suspension points. By moving, forms of 2 connection points, 3 connection points, and 4 connection points can be formed to adapt to the hoisting of goods of different sizes.

[0044] In this embodiment, the lower end of the movable pulley block 12 is connected to the upper frame 3 through a spherical plain bearing.

[0045] For a better understanding of the present utility model, a complete description of the working principle of the present utility model is given below:

[0046] During use, the transverse driving member 5 can be used to drive the hanging beam 8 to move transversely on the transverse guide rail 7, driving the hanging head 11 to move transversely, so as to adjust the transverse position of the hanging point of the hanging head 11. The longitudinal driving member 10 can be used to drive the moving locking device 9 to move longitudinally on the longitudinal guide rail 6, driving the hanging head 11 to move longitudinally, so as to adjust the longitudinal position of the hanging point of the hanging head 11.

[0047] During use, the drum driving mechanism drives the two movable pulleys AB or CD to lift and lower through the steel wire rope, driving the hanging head 11 to move in the pitch angle direction, so as to realize the adjustment of the hanging head 11 in the pitch angle Rx degree of freedom direction; the drum driving mechanism drives the two movable pulleys BC or AD to lift and lower through the steel wire rope, driving the hanging head 11 to move in the roll angle direction, so as to realize the adjustment of the hanging head 11 in the roll angle Ry degree of freedom direction. The slewing driving member 1 drives the slewing support frame 2 to rotate, driving the hanging head 11 to rotate in the yaw angle direction, that is, driving the hanging head to adjust in the yaw angle Rz degree of freedom direction. The three degrees of freedom adjustment of the X, Y, and Z directions of the lifting appliance can be carried out through the trolley traveling mechanism, the hoisting mechanism of the crane equipment.

[0048] The above has specifically described the embodiments of the present utility model, but the present utility model is not limited to the described embodiments. Those skilled in the art can also make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalents or substitutions are all included within the scope defined by the claims of the present utility model.

Claims

1. A crane sling with adjustable lifting points, characterized in that: It comprises a rotary drive member (1), a rotary support frame (2), an upper frame (3), a middle frame (4), a transverse drive member (5), a longitudinal guide rail (6), a transverse guide rail (7), a hanging beam (8), a movable lock (9) and a longitudinal drive member (10); The rotary drive member (1) is drivingly connected to the rotary support frame (2); the upper frame (3) is connected to the middle frame (4) via the rotary support frame (2); and a movable pulley block (12) is mounted on the upper frame (3); The transverse guide rail (7) is transversely mounted on the middle frame (4) and is drivingly connected to the transverse driving member (5); the hanging beam (8) is mounted on the transverse guide rail (7); the longitudinal guide rail (6) is longitudinally mounted on the hanging beam (8) and is drivingly connected to the longitudinal driving member (10); the movable lock (9) is mounted on the longitudinal guide rail (6); a hanging head (11) is mounted on the bottom end of the movable lock (9); the transverse driving member (5) drives the hanging beam (8) to move transversely on the transverse guide rail (7) to drive the hanging head (11) to move transversely; the longitudinal driving member (10) drives the movable lock (9) to move longitudinally on the longitudinal guide rail (6) to drive the hanging head (11) to move longitudinally.

2. The crane lifting point adjustable sling according to claim 1, characterized in that: The movable pulley group (12) comprises four movable pulleys, and the four movable pulleys are respectively connected to a drum driving mechanism via steel wires. The drum driving mechanism drives the two movable pulleys to move up and down via the steel wires, thereby driving the crane head (11) to move in the pitch angle direction, and drives the two movable pulleys to move up and down, thereby driving the crane head (11) to move in the roll angle direction.

3. The crane lifting point adjustable sling according to claim 1, characterized in that: The rotary drive component (1) drives the rotary support frame (2) to rotate, thereby driving the crane head (11) to rotate in the direction of the yaw angle.

4. The crane lifting point adjustable sling according to claim 1, characterized in that: The sling is assembled on the trolley travel mechanism of the crane equipment to adjust the X-direction freedom.

5. The crane lifting point adjustable sling according to claim 1, characterized in that: The sling is assembled on the trolley travel mechanism of the crane equipment to adjust the Y-direction freedom.

6. The crane lifting point adjustable sling according to claim 1, characterized in that: The sling is mounted on a lifting mechanism of a crane device to adjust the freedom in the Z direction.

7. The crane lifting point adjustable sling according to claim 1, characterized in that: Two transverse guide rails (7) are arranged in parallel, two parallel hanging beams (8) are arranged between the two transverse guide rails (7), and two movable locks (9) are installed on each hanging beam (8).

8. The crane lifting point adjustable sling according to claim 1, characterized in that: The lower end of the movable pulley block (12) is connected to the upper frame (3) via a spherical bearing.

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